Safety protection structure of lifting access type container

Abstract

The application relates to the technical field of lifting goods cabinets, and discloses a safety protection structure of a lifting and accessing type goods cabinet, which comprises an elevator main body and a guide rail, the side surface of the elevator main body is provided with a guide wheel in sliding connection with the guide rail, a plurality of limiting slot holes are formed in the side surface of the guide rail, a friction block is arranged on one side of the guide rail, mounting holes are formed in the side surface of the guide rail close to one side of the guide rail, and a limiting pin is movably inserted into the mounting holes. The driving mechanism is arranged, the driving mechanism drives the friction block and the limiting pin to move when the elevator main body falls, the elevator main body is first slowed down, then the limiting pin is inserted into the limiting slot hole to make the falling elevator hover, the elevator is prevented from falling and being damaged, the safety is improved, the risk of the limiting pin being bent and damaged is reduced, the service life of the limiting pin is prolonged, in addition, the driving mechanism also drives the clamping claw to rotate, which is beneficial to clamping the tray on the elevator main body in the falling process and providing protection for the goods in the tray.

Description

Technical Field

[0001] This invention relates to the field of lifting cabinet technology, specifically a safety protection structure for a lifting and retrieval type cabinet. Background Technology

[0002] A vertical lift container consists of three parts: a central lift for transporting pallets to the loading port, and storage areas on the front and back sides where pallets are stored. Because it makes full use of vertical space, it offers greater storage capacity than traditional racking systems, making it an ideal automated solution for storing goods of various shapes, sizes, and weights. Currently, existing vertical lift containers primarily use belts or chains for the lifting transmission. However, belts or chains are prone to breakage after prolonged use. If a belt or chain breaks, the lift will plummet to the bottom without protection, causing damage to the machinery and the goods inside.

[0003] Chinese patent CN210261019U discloses a fall protection device for a vertical lifting container elevator. When the elevator body's base plate tilts or falls, the fall protection pin on the edge of the elevator body extends and gets stuck in the pre-reserved hole of the fall protection rod, preventing the elevator from falling further. However, this technical solution still has the following drawbacks: First, because the elevator falls at a high speed, the fall protection pin may not be able to insert into the pre-reserved hole in time during the short period of time that corresponds to the position of the pre-reserved hole during the elevator's descent. Second, when the fall protection pin is inserted into the pre-reserved hole, the impact force of the elevator's high-speed descent acts on the fall protection pin, making it prone to breakage and deformation, which is not safe enough. In addition, if the elevator surface happens to be loaded with a pallet when it falls, the pallet on the elevator lacks protective measures when the falling elevator stops due to the action of the fall protection pin, and the pallet is prone to bumping and vibration, which may lead to damage or falling of goods.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a safety protection structure for a lift-up storage container, which has the advantages of effectively preventing falls, ensuring safety and stability, and protecting pallets and goods. It solves the problems of safety risks in the anti-fall structure of existing lift-up containers and the inability to protect pallets and goods when the lift falls.

[0006] To solve the above technical problems, the present invention provides the following technical solution: a safety protection structure for a lifting and retrieval storage cabinet, comprising a lifting body and a guide rail, wherein the lifting body is provided with a guide wheel slidably connected to the guide rail on its side, the guide rail is provided with a plurality of limiting slots on its side, a friction block is provided on one side of the guide rail, and an installation hole is provided on the side of the friction block near the guide rail, a limiting pin is movably inserted into the installation hole, a push spring is fixedly connected between the limiting pin and the inner wall of the installation hole, and the end of the limiting pin away from the push spring extends to the outside of the installation hole;

[0007] The top edges on both sides corresponding to the position of the elevator body are provided with clamping claws, and the clamping claws are hinged to the elevator body;

[0008] The side of the elevator body is also provided with a drive mechanism, which includes a fall trigger component, a friction block drive component, a limit component, and a gripper drive component.

[0009] The friction block drive assembly is used to provide the friction block with the driving force to move the guide rail sidewall. The limiting assembly is installed on the side of the elevator body and limits and locks the friction block drive assembly. The fall trigger assembly is driven between the guide rail and the limiting assembly. The clamping claw drive assembly is driven between the friction block drive assembly and the clamping claw.

[0010] When the main body of the elevator falls unexpectedly, it will cause the fall trigger component to fall. When the fall trigger component falls, it drives the limit component to move under the transmission of the guide rail, causing the limit component to release the limit on the friction block drive component. After the friction block drive component is released from the limit, it drives the friction block to move, forcing the friction block and the limit pin to contact the guide rail together. At the same time, the friction block drive component also drives the clamping claw to rotate through the clamping claw drive component, so that the clamping claw clamps the tray on the top of the elevator body.

[0011] When the limit pin moves down with the elevator body to the position corresponding to the limit slot, the push spring drives the limit pin to insert into the limit slot.

[0012] Preferably, the fall triggering component includes a mounting rod and a rack. The rack is vertically arranged and fixedly connected to the guide rail. The mounting rod is fixedly connected to the side of the elevator body. A cam and a gear are rotatably connected to the mounting rod. The gear meshes with the rack. A receiving groove is provided on the side of the cam near the gear. A fixed ratchet is provided on the inner wall of the receiving groove. A ratchet transmission component is provided on the side of the gear near the cam. The ratchet transmission component is located in the receiving groove.

[0013] Preferably, the ratchet transmission component includes a movable ratchet and a fixed block. One end of the movable ratchet is movably connected to a gear via a rotating shaft, and the other end of the movable ratchet has a straight slot. The fixed block is fixedly connected to the gear, and a stop pin is movably inserted into the fixed block. One end of the stop pin is movably inserted into the straight slot, and a positioning rod is fixed to one end of the stop pin located in the straight slot. The positioning rod is movably inserted into the straight slot.

[0014] Preferably, a stop spring is fixedly connected to the end of the stop pin away from the straight slot hole, the stop spring is sleeved outside the stop pin, and one end of the stop spring is fixedly connected to the fixing block.

[0015] Preferably, the friction block drive assembly includes a movable rod, which is laterally slidably connected to the side of the elevator body. A fixing block is fixedly connected to the top surface of the movable rod. The friction block is fixedly connected to the movable rod. A base block is provided at one end of the movable rod. The base block is fixedly connected to the elevator body. A drive spring is fixedly connected between the base block and the end of the movable rod.

[0016] Preferably, the limiting component includes a sleeve, which is fixedly connected to the main body of the elevator. A connecting rod is movably inserted into the sleeve, and a movable locking block is fixed at the bottom end of the connecting rod. The movable locking block engages with a fixed locking block. An extension block is fixedly connected to the top end of the connecting rod, and one end of the extension block extends to the edge of the cam. A return spring is sleeved on the connecting rod, and both ends of the return spring are fixedly connected to the top of the movable locking block and the bottom of the sleeve, respectively.

[0017] Preferably, the clamping claw includes a clamping plate, a bracket is fixedly connected to the bottom of the clamping plate, the bracket is hinged to the main body of the elevator, a through hole is opened on the surface of the bracket, a guide hole is opened on the side wall of the through hole, and both the through hole and the guide hole are set to be straight.

[0018] Preferably, the gripper drive assembly includes a vertical rod that is vertically slidably connected to the side of the elevator. A push rod is provided at the bottom of the vertical rod, and the push rod is inclined. The top end of the push rod is movably connected to the bottom end of the vertical rod through a rotating shaft. The bottom end of the push rod is hinged to a movable rod, and the top end of the vertical rod is movably connected to the gripper.

[0019] Preferably, the top end of the vertical rod extends into the through hole, and a guide rod is fixedly connected to the top end of the vertical rod, the guide rod being movably inserted into the guide hole.

[0020] Preferably, the movable rod is provided with a nut sleeve at the end away from the base block, the nut sleeve is fixedly connected to the main body of the elevator, and the nut sleeve is internally threaded with a bolt.

[0021] Compared with the prior art, the present invention provides a safety protection structure for a lift-up storage container, which has the following beneficial effects:

[0022] 1. The safety protection structure of this type of lifting and retrieval container triggers the drive mechanism when the lifting body falls. The drive mechanism drives the friction block and the limit pin to contact the guide rail, which slows down the lifting body. Then, the limit pin inserts into the limit slot to limit the lifting, making the falling lifting body hover and avoiding safety accidents caused by the lifting body falling. This improves safety. After slowing down, the limit pin is more easily inserted into the limit slot on the guide rail under the elastic force of the push spring, which improves the fault tolerance. At the same time, the impact force of the lifting body on the limit pin after slowing down is smaller, which reduces the risk of bending and damage to the limit pin and improves the service life of the limit pin.

[0023] 2. The safety protection structure of this type of lifting and retrieval container, when the drive mechanism drives the friction block to move, also drives the clamping claw to rotate, which is conducive to clamping and fixing the pallet. During the process of the lifting body falling and when it stops falling, the stability of the pallet is improved, avoiding the phenomenon of damage to the goods in the pallet due to the bumps and vibrations of the pallet, and effectively protecting the safety of the goods when the lifting body falls.

[0024] 3. The safety protection structure of this type of lifting and retrieval container is achieved by setting bolts. Rotating the bolts can drive the bolts to screw in, thereby pushing the movable rod to move and compressing the drive spring. When the fixed block on the movable rod re-engages with the movable block, it reaches the reset state. After the movable rod is reset, the bolts are rotated in the opposite direction to reset the bolts. The bolts are used to reset the movable rod so that the drive mechanism can be reused. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a safety protection structure for a lifting and retrieval container according to the present invention.

[0026] Figure 2 For the present invention Figure 1 Enlarged view of the A-section structure;

[0027] Figure 3 For the present invention Figure 1 Enlarged view of the structure of section B;

[0028] Figure 4 This is an exploded view of the mounting structure of the limiting pin of the present invention;

[0029] Figure 5 This is a three-dimensional structural diagram of the main body of the elevator of the present invention;

[0030] Figure 6 The explosion of the cam and gear connection structure of the present invention Figure 1 ;

[0031] Figure 7 The explosion of the cam and gear connection structure of the present invention Figure 2;

[0032] Figure 8 This is a three-dimensional structural diagram of the limiting component of the present invention;

[0033] Figure 9 This is a schematic diagram of the working process of a safety protection structure for a lift-up storage and retrieval container according to the present invention.

[0034] In the diagram: 1. Lift body; 2. Guide rail; 3. Guide wheel; 4. Limiting slot; 5. Friction block; 6. Fall trigger assembly; 61. Mounting rod; 62. Rack; 63. Cam; 64. Gear; 65. Receiving groove; 66. Fixed ratchet; 67. Racket transmission component; 671. Movable ratchet; 672. Fixed block; 673. Straight slot; 674. Stop pin; 675. Positioning rod; 676. Stop spring; 7. Friction block drive assembly; 71. Movable rod; 72. 73. Fixed locking block; 74. Base block; 8. Drive spring; 9. Limiting assembly; 10. Sleeve; 11. Connecting rod; 12. Movable locking block; 13. Extension block; 14. Return spring; 15. Clamping claw drive assembly; 16. Vertical rod; 17. Push rod; 18. Guide rod; 19. Mounting hole; 10. Limiting pin; 10. Push spring; 11. Clamping claw; 12. Clamping plate; 13. Bracket; 14. Through hole; 15. Guide hole; 16. Nut sleeve; 17. Bolt. Detailed Implementation

[0035] 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.

[0036] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a safety protection structure for a lift-up storage container.

[0037] Please see Figures 1-5 A safety protection structure for a lifting and retrieval container includes a lifting body 1 and a guide rail 2. The lifting body 1 has a guide wheel 3 slidably connected to the guide rail 2 on its side. The guide rail 2 has multiple limiting slots 4 on its side. A friction block 5 is provided on one side of the guide rail 2. The friction block 5 has an installation hole 10 on its side near the guide rail 2. A limiting pin 11 is movably inserted into the installation hole 10. A push spring 12 is fixedly connected between the limiting pin 11 and the inner wall of the installation hole 10. The end of the limiting pin 11 away from the push spring 12 extends to the outside of the installation hole 10.

[0038] The top edges on both sides corresponding to the position of the elevator body 1 are provided with clamping claws 13, and the clamping claws 13 are hinged to the elevator body 1;

[0039] The side of the elevator body 1 is also provided with a drive mechanism, which includes a fall trigger component 6, a friction block drive component 7, a limit component 8, and a clamping claw drive component 9.

[0040] The friction block drive assembly 7 is used to provide the friction block 5 with the driving force to move the side wall of the guide rail 2. The limiting assembly 8 is installed on the side of the elevator body 1 and limits and locks the friction block drive assembly 7. The fall trigger assembly 6 is driven between the guide rail 2 and the limiting assembly 8. The clamping claw drive assembly 9 is driven between the friction block drive assembly 7 and the clamping claw 13.

[0041] When the main body 1 of the elevator falls unexpectedly, it will cause the fall trigger component 6 to fall. When the fall trigger component 6 falls, it will drive the limiting component 8 to move under the transmission of the guide rail 2, causing the limiting component 8 to release the limiting of the friction block drive component 7. After the friction block drive component 7 releases the limiting, it will drive the friction block 5 to move, forcing the friction block 5 and the limiting pin 11 to contact the guide rail 2 together. At the same time, the friction block drive component 7 will also drive the clamping claw 13 to rotate through the clamping claw drive component 9, so that the clamping claw 13 clamps the tray on the top of the main body 1 of the elevator.

[0042] When the limiting pin 11 moves down with the elevator body 1 to the position corresponding to the limiting slot 4, the push spring 12 drives the limiting pin 11 to insert into the limiting slot 4.

[0043] The installation method of guide wheel 3 and guide rail 2 is the same as that of existing technology, and will not be described in detail. Guide wheel 3 and guide rail 2 are used to guide the elevator and ensure that the elevator moves vertically up and down. Friction block 5 near guide rail 2 and limit pin 11 near guide rail 2 are preferably made of rubber to increase friction resistance to guide rail 2. In the initial state, push spring 12 is at its natural length, and there is a gap between limit pin 11 and mounting hole 10 at this time.

[0044] In use, if the drive belt or chain on the main body 1 of the elevator breaks, the main body 1 of the elevator loses tension. Under the action of the guide wheel 3 and the guide rail 2, the main body 1 of the elevator can be ensured to fall vertically downwards. When the elevator falls vertically downwards, it drives the fall trigger component 6. After the fall trigger component 6 operates, it drives the limit component 8. After the limit component 8 operates, it releases the limit effect on the friction block drive component 7. After the friction block drive component 7 is released from the limit, it moves laterally and drives the friction block 5 to move to one side of the guide rail 2. Since the friction block 5 has a mounting hole 10 on the side near the guide rail 2, a push spring 12 is fixedly connected between the limit pin 11 and the inner wall of the mounting hole 10. When the friction block 5 moves to one side of the guide rail 2, it also drives the push spring 12 and the limit pin 11 to move to the guide rail 2. Since the end of the limit pin 11 away from the push spring 12 extends to the outside of the mounting hole 10, the end of the limit pin 11 cannot continue to move after contacting the side of the guide rail 2. At this time, the friction block 5 that continues to move compresses the push spring 12, and finally the friction block 5 also contacts the guide rail. 2. At this time, the friction block 5 and the limiting pin 11, while maintaining contact with the guide rail 2, fall with the elevator body 1. The friction between the friction block 5 and the limiting pin 11 and the guide rail 2 slows down the falling elevator body 1. At the same time, the friction block drive assembly 7 also drives the clamping claw drive assembly 9. After the clamping claw drive assembly 9 operates, it drives the clamping claws 13 on both sides of the elevator body 1 to rotate. After the clamping claws rotate, they just clamp the outer wall of the tray on the top surface of the elevator body 1, and use the clamping force to fix the tray. When the speed of the elevator body 1, friction block 5 and limit pin 11 slows down, and the limit pin 11 moves down to correspond to the position of the limit slot 4 on the guide rail 2, the elastic force of the compressed push spring 12 can push the limit pin 11 to move and insert into the limit slot 4. The limit pin 11 is inserted into the limit slot 4 to achieve engagement. At this time, one end of the limit pin 11 is inserted into the slot, and the other end is still located in the mounting hole 10, so as to stop the friction block 5 from falling. The stopping of the friction block 5 further stops the elevator body 1 from falling.

[0045] By setting up a drive mechanism, when the elevator body 1 falls, the drive mechanism is triggered, which drives the friction block 5 and the limit pin 11 to first contact the guide rail 2. This friction reduces the speed of the elevator body 1, the friction block 5, and the limit pin 11. Then, the limit pin 11 inserts into the limit slot 4 on the guide rail 2, thereby limiting the elevator body 1 and suspending it after deceleration, preventing the elevator body 1 from falling and improving safety performance. After deceleration, the limit pin 11 is more easily inserted into the guide rail 2 under the elastic force of the push spring 12. The limiting slot 4 improves the fault tolerance rate, and the impact force of the lifting body 1 on the limiting pin 11 is smaller after the speed is reduced, which reduces the risk of bending and damage to the limiting pin 11, ensuring high safety and improving the service life of the limiting pin 11. When the drive mechanism drives the friction block 5 to move, it also drives the clamping claw 13 to rotate, which is conducive to clamping and fixing the pallet. During the falling process and when the lifting body 1 stops falling, the stability of the pallet is improved, avoiding the phenomenon of damage to the goods in the pallet due to the bumps and vibrations of the pallet, and effectively protecting the safety of the goods when the lifting body 1 falls.

[0046] Further, refer to the appendix Figure 2 as well as Figures 5-8The fall triggering component 6 includes a mounting rod 61 and a rack 62. The rack 62 is vertically arranged and fixedly connected to the guide rail 2. The mounting rod 61 is fixedly connected to the side of the elevator body 1. A cam 63 and a gear 64 are rotatably connected to the mounting rod 61. The gear 64 meshes with the rack 62. The cam 63 has a receiving groove 65 on the side near the gear 64. The inner wall of the receiving groove 65 is provided with a fixing ratchet 66. A ratchet transmission component 67 is provided on the side of the gear 64 near the cam 63. The transmission component 67 is located within the receiving groove 65. The ratchet transmission component 67 includes a movable ratchet 671 and a fixed block 672. One end of the movable ratchet 671 is movably connected to the gear 64 via a rotating shaft, and the other end of the movable ratchet 671 has a straight slot 673. The fixed block 672 is fixedly connected to the gear 64, and a stop pin 674 is movably inserted into the fixed block 672. One end of the stop pin 674 is movably inserted into the straight slot 673, and one end of the stop pin 674 located in the straight slot 673 is fixed. Positioning rod 675, which is movably inserted into straight slot hole 673; friction block drive assembly 7 includes movable rod 71, which is laterally slidably connected to the side of elevator body 1, a fixing block 72 is fixedly connected to the top surface of movable rod 71, friction block 5 is fixedly connected to movable rod 71, a base block 73 is provided at one end of movable rod 71, the base block 73 is fixedly connected to elevator body 1, and a drive spring 74 is fixedly connected between the base block 73 and the end of movable rod 71; the limiting group Component 8 includes a sleeve 81, which is fixedly connected to the elevator body 1. A connecting rod 82 is movably inserted into the sleeve 81. A movable locking block 83 is fixed at the bottom end of the connecting rod 82. The movable locking block 83 engages with a fixed locking block 72. An extension block 84 is fixedly connected to the top end of the connecting rod 82. One end of the extension block 84 extends to the edge of the cam 63. A return spring 85 is sleeved on the connecting rod 82. Both ends of the return spring 85 are fixedly connected to the top of the movable locking block 83 and the bottom of the sleeve 81, respectively.

[0047] The number of fixed ratchet teeth 66 and ratchet transmission components 67 in the receiving groove 65 are preferably set to three. The three fixed ratchet teeth 66 and the three ratchet transmission components 67 are arranged in a circumferential array. The straight slot hole 673 is set as linear. A transverse sliding groove is provided on the side of the elevator body 1. A transverse slider is provided on the surface of the movable rod 71. The transverse slider is slidably connected to the transverse sliding groove, so as to realize the transverse sliding connection between the movable rod 71 and the elevator body 1. The friction block 5 is preferably fixedly connected to the movable rod 71 by screws, which facilitates the inspection and replacement of the friction block 5. In the initial state, the drive spring 74 and the return spring 85 are both compressed. In the normal operation state of the elevator body 1, since the gear 64 meshes with the rack 62 on the slide rail, and the gear 64 is rotatably connected to the mounting rod 61 on the elevator body 1, the up and down movement of the elevator will drive the gear 64 to rotate. At this time, since the moving speed of the elevator body 1 is slow during normal operation, the rotation speed of the gear 64 is also slow, and the centrifugal force of the gear 64 is small.

[0048] When the elevator body 1 falls unexpectedly, it accelerates downward under the influence of gravity. At this time, the rotational speed of gear 64 increases, leading to an increase in centrifugal force. This centrifugal force drives the movable ratchet 671 to rotate. Once the movable ratchet 671 rotates, it meshes with the fixed ratchet 66. The continuing rotation of gear 64 then drives the cam 63 to rotate via the movable and fixed ratchet 671 and 66. Since one end of the extension block 84 extends to the edge of the cam 63, the rotation of the cam 63 pushes the extension block 84 upward. When 84 moves upward, it drives the connecting rod 82 to move upward. When the connecting rod 82 moves upward, it drives the movable block 83 to move upward. When the movable block 83 moves upward, it compresses the reset spring 85 and disengages from the fixed block 72, thereby making the fixed block 72 no longer locked by the movable block 83. At this time, the movable block 83 no longer limits the movable rod 71. Then, the compressed drive spring 74 pushes the movable rod 71 to slide laterally through the elastic force. Since the friction block 5 is fixed to the movable rod 71, the lateral sliding of the movable rod 71 can drive the friction block 5 to move towards the slide rail, and finally make the friction block 5 and the limiting pin 11 on the friction block 5 contact the guide rail 2.

[0049] By setting up a fall trigger component 6, the speed difference between the accidental fall of the elevator body 1 and its normal operation is utilized. When the elevator body 1 falls unexpectedly, the fall trigger component 6 is accurately activated. The fall trigger component 6 sequentially drives the limit component 8 and the friction block drive component 7 to operate. Finally, the drive spring 74 pushes the friction block 5 and the limit pin 11 to move laterally to be close to the guide rail 2. This helps to pre-decelerate the elevator body 1 through the friction force of the friction block 5 and the limit pin 11. Reducing the falling speed of the elevator body 1 helps to improve the accuracy of the limit pin 11 entering the limit slot 4. At the same time, when the limit pin 11 is inserted into the limit slot 4, the impact force of the elevator body 1 on the limit pin 11 is reduced, effectively reducing the risk of bending and damage to the limit pin 11 and increasing the service life of the limit pin 11. In addition, the fall trigger component 6, the limit component 8 and the friction block drive component 7 can all be reset to achieve multiple uses.

[0050] Further, refer to the appendix Figure 7 The stop pin 674 is fixedly connected to a stop spring 676 at the end away from the straight slot hole 673. The stop spring 676 is sleeved on the outside of the stop pin 674, and one end of the stop spring 676 is fixedly connected to the fixing block 672.

[0051] In the initial state, the stop spring 676 is compressed. When the elevator body 1 is working normally, the centrifugal force generated by the rotation of the gear 64 is less than the tension of the stop spring 676 on the stop pin 674, which can prevent the stop pin 674 from moving arbitrarily, and further prevent the movable ratchet 671 from rotating arbitrarily. When the elevator body 1 falls unexpectedly, the centrifugal force generated by the rotation of the gear 64 is larger, which drives the movable ratchet 671 to rotate. When the movable ratchet 671 rotates, it pushes the positioning rod 675 to move through the straight slot hole 673. Since the positioning rod 675 is fixed to the end of the stop pin 674, when the positioning rod 675 moves, it drives the stop pin 674 to move. When the stop pin 674 moves, it further compresses the stop spring 676.

[0052] By setting a stop spring 676, the elastic force of the stop spring 676 is used to prevent the movable ratchet 671 from rotating arbitrarily when the elevator body 1 is working. This prevents the movable ratchet 671 from being triggered and causing the elevator body 1 to stop during normal operation, making it safer and more reliable.

[0053] Further, refer to the appendix Figures 3-5The clamping claw 13 includes a clamping plate 131, with a bracket 132 fixedly connected to the bottom of the clamping plate 131. The bracket 132 is hinged to the main body 1 of the elevator. A through hole 133 is formed on the surface of the bracket 132, and a guide hole 134 is formed on the side wall of the through hole 133. Both the through hole 133 and the guide hole 134 are straight. The clamping claw drive assembly 9 includes a vertical rod 91, which is vertically slidably connected to the side of the elevator. A push rod 92 is provided at the bottom of the vertical rod 91. The push rod 92 is inclined, and its top end is movably connected to the bottom end of the vertical rod 91 through a rotating shaft. The bottom end of the push rod 92 is hinged to a movable rod 71, and the top end of the vertical rod 91 is movably connected to the clamping claw 13. The top end of the vertical rod 91 extends into the through hole 133, and a guide rod 93 is fixedly connected to the top end of the vertical rod 91. The guide rod 93 is movably inserted into the guide hole 134.

[0054] In practical applications, the clamping plate 131 is preferably set to be arc-shaped, and the side of the tray can be provided with an arc-shaped groove that matches the shape of the clamping plate 131. After the clamping plate 131 rotates, it can extend into the arc-shaped groove, thereby improving the clamping and fixing effect of the clamping plate 131. The number of clamping claws 13 and clamping claw drive components 9 on the same side of the elevator body 1 is the same, and at least two are provided. The side of the elevator is provided with a vertical slide groove, and a vertical slider is provided on the vertical rod 91. The vertical slider is slidably connected to the vertical slide groove, thereby realizing the vertical sliding connection between the vertical rod 91 and the side of the elevator.

[0055] When the main body 1 of the elevator accidentally falls, the fall trigger component 6, the limit component 8, and the friction block drive component 7 operate in sequence and drive the movable rod 71 to move laterally. When the movable rod 71 drives the friction block 5 to move, the push rod 92 is tilted and its top end is movably connected to the bottom end of the vertical rod 91 through a pivot. The bottom end of the push rod 92 is hinged to the movable rod 71. Therefore, when the movable rod 71 moves, it drives the bottom end of the push rod 92 to move laterally. When the bottom end of the push rod 92 moves laterally, the top end of the push rod 92 will push the vertical rod 91 to slide vertically upward. When the vertical rod 91 slides vertically upward, it drives the guide rod 93 at the top end of the vertical rod 91 to slide vertically upward. Since the guide rod 93 is movably inserted into the guide hole 134, when the guide rod 93 slides vertically upward, it will push the bracket 132 to rotate around the hinge point. When the bracket 132 rotates, it drives the clamping plate 131 at the top end of the bracket 132 to rotate.

[0056] By setting a rotatable clamping claw 13, the clamping claw 13 is driven by the drive mechanism to rotate during the descent of the elevator body 1, thereby clamping and fixing the pallet on the elevator body 1, improving the stability of the pallet, effectively preventing the pallet from bumping and vibrating when the elevator falls, avoiding damage to the goods in the pallet due to bumping and vibration, and making it safer.

[0057] Further, refer to the appendix Figure 9The movable rod 71 is provided with a nut sleeve 14 at the end away from the base block 73. The nut sleeve 14 is fixedly connected to the elevator body 1. The nut sleeve 14 is internally threaded with a bolt 15.

[0058] Among them, bolt 15 is horizontally set, the central axis of bolt 15 is collinear with the central axis of movable rod 71, and a insertion hole is opened at the end of bolt 15;

[0059] When in use, after the belt or chain on the main body 1 of the elevator is repaired, rotating the bolt 15 can drive the bolt 15 to screw in, thereby pushing the movable rod 71 to move and compressing the drive spring 74. When the fixed block 72 on the movable rod 71 re-engages with the movable block 83, it reaches the reset state. After the movable rod 71 is reset, the bolt 15 is rotated in the opposite direction to reset the bolt 15. The bolt 15 is used to reset the movable rod 71 so that the drive mechanism can be reused.

[0060] Working principle: When in use, under normal operating conditions of the elevator body 1, the gear 64 meshes with the rack 62 on the slide rail, and the gear 64 is rotatably connected to the mounting rod 61 on the elevator body 1. The up and down movement of the elevator will drive the gear 64 to rotate. At this time, because the elevator body 1 moves slowly under normal operating conditions, the gear 64 rotates slowly, and the centrifugal force on the gear 64 is small.

[0061] When the elevator body 1 falls unexpectedly, it accelerates downward under gravity. At this time, the rotational speed of gear 64 increases, leading to an increase in centrifugal force. This centrifugal force drives the movable ratchet 671 to rotate. Since the positioning rod 675 is movably inserted into the straight slot 673 on the movable ratchet 671, when the movable ratchet 671 rotates, it can push the positioning rod 675 to move through the straight slot 673. Because the positioning rod 675 is fixed to the end of the stop pin 674, when the positioning rod 675... When gear 75 moves, it drives the stop pin 674 to move, and the stop pin 674 compresses the stop spring 676 when it moves. When the movable ratchet 671 rotates, the movable ratchet 671 meshes with the fixed ratchet 66. At this time, the continuously rotating gear 64 can drive the cam 63 to rotate through the movable ratchet 671 and the fixed ratchet 66. Since one end of the extension block 84 extends to the edge of the cam 63, the rotation of the cam 63 will push the extension block 84 to move upward. When the extension block 84 moves upward, it drives the connecting rod 82 to move upward. When the connecting rod 82 moves upward, it drives the movable locking block 8 to move upward. 3. When the movable block 83 moves upward, it disengages from the fixed block 72 and compresses the return spring 85, thus freeing the fixed block 72 from being engaged by the movable block 83. At this point, the movable block 83 no longer limits the movable rod 71. Then, the compressed drive spring 74 pushes the movable rod 71 to slide laterally through its elastic force. Since the friction block 5 is fixed to the movable rod 71, and the limiting pin 11 is installed in the mounting hole 10 at the end of the friction block 5, the lateral sliding of the movable rod 71 can drive the friction block 71 to slide laterally. The friction block 5 and the limiting pin 11 move toward the slide rail. Since the end of the limiting pin 11 away from the push spring 12 extends to the outside of the mounting hole 10, the end of the limiting pin 11 cannot continue to move after contacting the side of the guide rail 2. At this time, the friction block 5, which continues to move, compresses the push spring 12. Finally, the friction block 5 also contacts the guide rail 2. At this time, the friction block 5 and the limiting pin 11 fall with the elevator body 1 while maintaining contact with the guide rail 2. The friction between the friction block 5 and the limiting pin 11 and the guide rail 2 slows down the descending elevator body 1.

[0062] Meanwhile, when the movable rod 71 moves the friction block 5, the push rod 92 is tilted and its top end is movably connected to the bottom end of the vertical rod 91 through a pivot. The bottom end of the push rod 92 is hinged to the movable rod 71. Therefore, when the movable rod 71 moves, it drives the bottom end of the push rod 92 to move laterally. When the bottom end of the push rod 92 moves laterally, the top end of the push rod 92 will push the vertical rod 91 to slide vertically upward. When the vertical rod 91 slides vertically upward, it drives the guide rod 93 at the top end of the vertical rod 91 to slide vertically upward. Since the guide rod 93 is movably inserted into the guide hole 134, when the guide rod 93 slides vertically upward, it will push the bracket 132 to rotate around the hinge point. When the bracket 132 rotates, it drives the clamping plate 131 at the top end of the bracket 132 to rotate. The rotating clamping plate clamps and fixes the pallet on the elevator body 1, which improves the stability of the pallet and effectively prevents the pallet from bumping and vibrating when the elevator falls, thus avoiding damage to the goods in the pallet due to bumping and vibration, making it safer.

[0063] When the speed of the elevator body 1, friction block 5, and limit pin 11 slows down, and the limit pin 11 moves down to correspond to the position of the limit slot 4 on the guide rail 2, the elastic force of the compressed push spring 12 can push the limit pin 11 to move and insert into the limit slot 4. The limit pin 11 is inserted into the limit slot 4 to achieve engagement. At this time, one end of the limit pin 11 is inserted into the slot, and the other end is still located in the mounting hole 10, thereby stopping the friction block 5 from falling. The stopping of the friction block 5 further stops the elevator body 1 from falling. The impact force of the elevator body 1 on the limit pin 11 after the speed is reduced is smaller, which reduces the risk of bending and damage to the limit pin 11, improves safety, and increases the service life of the limit pin 11.

[0064] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety protection structure for a lifting and retrieval storage container, comprising a lifting body (1) and a guide rail (2), wherein the lifting body (1) is provided with guide wheels (3) slidably connected to the guide rail (2) on its side, characterized in that: The guide rail (2) has multiple limiting slots (4) on its side. A friction block (5) is provided on one side of the guide rail (2). A mounting hole (10) is provided on the side of the friction block (5) near the guide rail (2). A limiting pin (11) is movably inserted into the mounting hole (10). A push spring (12) is fixedly connected between the limiting pin (11) and the inner wall of the mounting hole (10). The end of the limiting pin (11) away from the push spring (12) extends to the outside of the mounting hole (10). The top edges on both sides of the elevator body (1) are provided with clamping claws (13), and the clamping claws (13) are hinged to the elevator body (1); The elevator body (1) is also provided with a drive mechanism on its side, which includes a fall trigger component (6), a friction block drive component (7), a limit component (8), and a gripper drive component (9). The friction block drive assembly (7) is used to provide the friction block (5) with the driving force to move the guide rail (2) side wall. The limiting assembly (8) is installed on the side of the elevator body (1) and limits and locks the friction block drive assembly (7). The fall trigger assembly (6) is driven between the guide rail (2) and the limiting assembly (8). The clamping claw drive assembly (9) is driven between the friction block drive assembly (7) and the clamping claw (13). When the elevator body (1) falls unexpectedly, it will cause the fall trigger component (6) to fall. When the fall trigger component (6) falls, it will drive the limit component (8) to move under the transmission of the guide rail (2), causing the limit component (8) to release the limit on the friction block drive component (7). After the friction block drive component (7) releases the limit, it drives the friction block (5) to move, forcing the friction block (5) and the limit pin (11) to contact the guide rail (2). At the same time, the friction block drive component (7) also drives the clamping claw (13) to rotate through the clamping claw drive component (9), so that the clamping claw (13) clamps the tray on the top of the elevator body (1). When the limiting pin (11) moves down with the elevator body (1) to the position corresponding to the limiting slot (4), the push spring (12) drives the limiting pin (11) to insert into the limiting slot (4).

2. The safety protection structure of a lifting and retrieval storage container according to claim 1, characterized in that: The fall triggering component (6) includes a mounting rod (61) and a rack (62). The rack (62) is vertically arranged and fixedly connected to the guide rail (2). The mounting rod (61) is fixedly connected to the side of the elevator body (1). A cam (63) and a gear (64) are rotatably connected on the mounting rod (61). The gear (64) meshes with the rack (62). A receiving groove (65) is provided on the side of the cam (63) near the gear (64). A fixed ratchet (66) is provided on the inner wall of the receiving groove (65). A ratchet transmission component (67) is provided on the side of the gear (64) near the cam (63). The ratchet transmission component (67) is located in the receiving groove (65).

3. The safety protection structure of a lifting and retrieval storage container according to claim 2, characterized in that: The ratchet transmission component (67) includes a movable ratchet (671) and a fixed block (672). One end of the movable ratchet (671) is movably connected to the gear (64) via a rotating shaft. The other end of the movable ratchet (671) is provided with a straight slot hole (673). The fixed block (672) is fixedly connected to the gear (64). A stop pin (674) is movably inserted into the fixed block (672). One end of the stop pin (674) is movably inserted into the straight slot hole (673). A positioning rod (675) is fixed at one end of the stop pin (674) located in the straight slot hole (673). The positioning rod (675) is movably inserted into the straight slot hole (673).

4. The safety protection structure of a lifting and retrieval storage container according to claim 3, characterized in that: The stop pin (674) is fixedly connected to a stop spring (676) at the end away from the straight slot (673). The stop spring (676) is sleeved outside the stop pin (674), and one end of the stop spring (676) is fixedly connected to the fixing block (672).

5. The safety protection structure of a lifting and retrieval container according to claim 4, characterized in that: The friction block drive assembly (7) includes a movable rod (71), which is laterally slidably connected to the side of the elevator body (1). A fixed block (72) is fixedly connected to the top surface of the movable rod (71). The friction block (5) is fixedly connected to the movable rod (71). A base block (73) is provided at one end of the movable rod (71). The base block (73) is fixedly connected to the elevator body (1). A drive spring (74) is fixedly connected between the base block (73) and the end of the movable rod (71).

6. The safety protection structure of a lifting and retrieval container according to claim 5, characterized in that: The limiting component (8) includes a sleeve (81), which is fixedly connected to the elevator body (1). A connecting rod (82) is movably inserted into the sleeve (81). A movable locking block (83) is fixed at the bottom end of the connecting rod (82). The movable locking block (83) engages with the fixed locking block (72). An extension block (84) is fixedly connected to the top end of the connecting rod (82). One end of the extension block (84) extends to the edge of the cam (63). A return spring (85) is sleeved on the connecting rod (82). Both ends of the return spring (85) are fixedly connected to the top of the movable locking block (83) and the bottom of the sleeve (81), respectively.

7. The safety protection structure of a lifting and retrieval storage container according to claim 6, characterized in that: The clamping claw (13) includes a clamping plate (131), and a bracket (132) is fixedly connected to the bottom of the clamping plate (131). The bracket (132) is hinged to the elevator body (1). A through hole (133) is opened on the surface of the bracket (132), and a guide hole (134) is opened on the side wall of the through hole (133). Both the through hole (133) and the guide hole (134) are set to be straight.

8. The safety protection structure of a lifting and retrieval container according to claim 7, characterized in that: The gripper drive assembly (9) includes a vertical rod (91), which is vertically slidably connected to the side of the elevator. A push rod (92) is provided at the bottom of the vertical rod (91). The push rod (92) is inclined. The top end of the push rod (92) is movably connected to the bottom end of the vertical rod (91) through a rotating shaft. The bottom end of the push rod (92) is hinged to the movable rod (71). The top end of the vertical rod (91) is movably connected to the gripper (13).

9. The safety protection structure of a lifting and retrieval container according to claim 8, characterized in that: The top end of the vertical rod (91) extends into the through hole (133), and a guide rod (93) is fixedly connected to the top end of the vertical rod (91). The guide rod (93) is movably inserted into the guide hole (134).

10. The safety protection structure of a lifting and retrieval container according to claim 9, characterized in that: The movable rod (71) is provided with a nut sleeve (14) at the end away from the base block (73). The nut sleeve (14) is fixedly connected to the elevator body (1). The nut sleeve (14) is internally threaded with a bolt (15).

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