A safety protection structure for a lifting stacker

Abstract

This application relates to the technical field of pull cord switches, and discloses a safety protection structure for a lifting stacker, including a shelf for storing goods, and a lane is formed between two horizontal shelves. A pull cord switch is provided at the bottom layer of the lane on the side of the shelf. The stacker is located outside the side of the shelf close to the pull cord switch, and the stacker is driven by a motor to move in the lane between the two shelves from the side close to the pull cord switch to the other side away from the pull cord switch. Through the arrangement of the safety cord and the driving cord, the safety cord and the driving cord are directly buckled on the outside of the safety belt worn by the personnel through elastic buckles, so that the personnel can directly pull the safety cord, the safety cord pulls the blocking block, the blocking block slides to release the hook ring, and the hook ring slides in the strip groove on the inner wall of the sliding box to approach the pull cord body, and the hook ring directly hooks on the outside of the pull cord body.

Description

Technical Field

[0001] This application relates to the technical field of pull cord switches, and particularly to a safety protection structure for a lifting stacker. Background Art

[0002] Stackers are usually installed in automated warehouses, which reduces the difficulty of storing and handling goods and improves the efficiency of warehousing. In an automated warehouse, safety-related supporting facilities are usually provided, and safety pull cord switches are usually installed on the shelves on both sides of the stacker aisle. Steel wires are used to connect the switches along both sides of the aisle. When personnel are working in the aisle and the stacker suddenly starts, pulling the steel wire at any point along the line on the site will cause the driving arm of the emergency stop switch to rotate. The torque spring is driven by the transmission shaft to displace the precision cam, which drives the emergency stop switch to cut off the control circuit, causing the stacker to stop running.

[0003] When personnel are working inside the stacker aisle or under the shelves, they will be in a squatting or standing state. When personnel find that the stacker suddenly starts to run, they need to first find the location of the pull switch, then manually grab the pull switch and pull it to one side to drive the emergency stop switch to cut off the control circuit. This action takes a long time and requires multiple operations. Moreover, as the stacker gets closer, it will affect the reaction speed of personnel and reduce the effectiveness of the actual application of the pull cord switch; when personnel have their backs to the stacker, they cannot detect the start of the stacker in time, resulting in no pull cord action being taken, causing more serious consequences. Summary of the Invention

[0004] This application proposes a safety protection structure for a lifting stacker, which has the advantages of simpler operation and higher safety, and is used to solve the problems of multiple driving actions of the pull cord switch and only being driven by manpower as mentioned in the above background art.

[0005] To achieve the above object, the present application adopts the following technical solution: A safety protection structure for a lifting stacker, including a shelf for storing goods, and a lane is formed between two horizontal shelves. A pull cord switch is provided at the bottom layer of the lane on the side of the shelf. The stacker is located outside the side of the shelf close to the pull cord switch. The stacker is driven by a motor to move in the lane between the two shelves from the side close to the pull cord switch to the side far from the pull cord switch. The driving arm of the pull cord switch is connected to a pull cord body, and the pull cord body is horizontally arranged on the side of the shelf. A sliding box is slidably connected to the side of the shelf on one side of the pull cord body. The sliding box is hollow and partially open towards the pull cord body. A strip-shaped groove is opened on the side of the sliding box far from the shelf, and the strip-shaped groove is open towards the direction of the pull cord body. The sliding box is slidably connected with a hook ring through the strip-shaped groove opened on the side, and the hook ring will approach the outside of the pull cord body after sliding in the strip-shaped groove. The bottom end of the hook ring is connected with a weight. A blocking block is arranged below the hook ring and is slidably connected to the inner side of the sliding box. One side of the blocking block close to the pull cord switch is connected to the end of a safety rope. When the stacker starts suddenly, manually pull the safety rope to make the blocking block slide horizontally towards the direction close to the pull cord switch and release the hook ring, so that the hook ring and the weight slide along the strip-shaped groove opened on the side of the sliding box to approach the outside of the pull cord body, and make the hook ring hang on the outside of the pull cord body, so that the weight pulls the pull cord body to move downward, and the pull cord body pulls and stretches the driving arm to cut off the control circuit of the pull cord switch.

[0006] Further, the top end of the sliding box is connected with a rotating wheel through a telescopic rod. An abutting plate is arranged above the rotating wheel on the inner side of the sliding box. An elastic cord is connected below the abutting plate, and the end of the elastic cord far from the abutting plate is connected to the end of the safety rope. A driving cord is connected to the side of the sliding box far from the pull cord switch, and elastic buckles are connected to the ends of the safety rope and the driving cord far from the sliding box. The safety rope and the driving cord are connected to a safety belt on the surface of a person through the elastic buckles. Manually pull the driving cord to drive the sliding box to slide horizontally.

[0007] Further, the cross-sectional shape of the sliding box is an arc-shaped guiding towards the pull cord body, and the hook ring slides close to the outside of the pull cord body after being released by the blocking block. The whole sliding box is made of a material that is not attracted by magnetism.

[0008] Further, the hook ring is in the shape of a circular ring with an opening on the side close to the pull cord body, and a magnetic block is arranged on the inner side of the arc of the hook ring. A material attracted by the hook ring magnetically is connected to the middle area in the axial direction of the pull cord body.

[0009] Further, the gravity of the weight is greater than the pulling force for driving the pull cord switch.

[0010] Further, the driving rope is a green belt, the safety rope is a red belt, and the elastic rope is made of elastic material. When the safety rope is in a horizontally taut state, the driving rope is still in a relaxed state. After the safety rope is pulled, the safety rope will drive the blocking block and the pressing plate to move, causing the blocking block to slide horizontally to release the hook ring, and the pressing plate to move downward to squeeze the rotating wheel.

[0011] Further, snap rings are movably sleeved on the outer side of the pulling rope body at equal intervals. The inner side of the snap ring is connected with a horizontally arranged rotating rod. The outer side of the rotating rod is connected with a roller located below the pulling rope body. A passive rope I is wound around the outer side of the rotating rod far from the shelf, and a passive rope II is wound around the side of the rotating rod close to the shelf. A disc spring is connected to the outer side of the end of the rotating rod close to the shelf, and the disc spring elastically drives the rotating rod to be in a static state.

[0012] Further, the circumferential contour of the roller coincides with the outer contour of the pulling rope body.

[0013] Further, the passive rope I and the passive rope II are arranged in sequence between adjacent snap rings, and the winding directions of the two sides of the passive rope I and the passive rope II on the outer sides of the two rotating rods are different. When the middle regions of the passive rope I and the passive rope II are pulled, the sides of the passive rope I and the passive rope II close to the pulling rope switch will be pulled away from the pulling rope switch, causing the passive rope I and the passive rope II to drive the rotating rod and the roller to rotate, and the rotation of the roller drives the pulling rope body to move away from the pulling rope switch. When the middle regions of the passive rope I and the passive rope II are pulled, the sides of the passive rope I and the passive rope II close to the pulling rope switch will be pulled towards the pulling rope switch, causing the passive rope I and the passive rope II to drive the rotating rod and the roller to rotate, and the rotation of the roller drives the pulling rope body to move away from the pulling rope switch.

[0014] The beneficial effect of the present invention is that through the arrangement of the safety rope and the driving rope, the safety rope and the driving rope are directly buckled on the outer side of the safety belt worn by the personnel through the elastic buckle, enabling the personnel to directly pull the safety rope, causing the safety rope to pull the blocking block, making the blocking block slide to release the hook ring, allowing the hook ring to slide in the strip groove on the inner wall of the sliding box and approach the pulling rope body, and directly hooking the hook ring on the outer side of the pulling rope body, enabling the gravity of the weight block to pull the pulling rope body through the hook ring, driving the pulling rope body to drive the pulling rope switch, cutting off the circuit by the pulling rope switch, and stopping the operation of the stacker. Furthermore, within the range of the outer body distance of the worker, the safety rope is directly driven, reducing the operation process required for the personnel to drive the pulling rope switch, improving the safety of the personnel working inside the roadway. And when the worker does not notice the start of the stacker, the worker will be pushed by the stacker inside the roadway. Even if the worker directly pulls the safety rope through his own movement, the stacker can still be driven to stop, further improving the safety of the worker's work.

[0015] By setting the hook ring, the hook ring is hooked on the outside of the pull rope body and the outside of the passive rope I or the passive rope II, so that the pull rope body and the passive rope I are pulled at the same time to move to the middle area. When the passive rope I moves to the middle area, both ends of the passive rope I are pulled to move to the middle area, and both ends of the passive rope I are wrapped around the outside of the rotating rod, so that the end of the passive rope I close to the pull rope switch releases the passive rope I, and the rotating rod drives the roller to rotate, so that the roller drives the pull rope body in contact with the upper side to move to the middle area of the passive rope I, and the passive rope When the passive rope I is released at the end of I away from the pull-rope switch, the rotating rod drives the roller to rotate, so that the roller drives the pull-rope body in contact with the upper part to move toward the middle area away from the passive rope I, thereby making the end of the passive rope I away from the pull-rope switch resist the tendency of the pull-rope body to move toward the middle area of the passive rope I when being pulled by the hook ring, so that only the side of the pulled part of the pull-rope body close to the pull-rope switch is pulled the most, reducing the pulling amount of the pulled part of the pull-rope body away from the pull-rope switch, thereby increasing the action speed of the pull-rope body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0017] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0018] Figure 1 It is a three-dimensional schematic diagram of the shelf structure of the present invention;

[0019] Figure 2 It is a partial connection diagram of the shelf structure, the pull rope switch structure and the sliding box structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the inner side of the clamping ring structure and the sliding box structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the inner side of the slide box structure of the present invention.

[0022] In the figure: 1. shelf; 2. pull rope switch; 3. pull rope body; 4. clamp ring; 5. slide box; 6. hook ring; 7. weight block; 8. drive rope; 9. block; 10. safety rope; 11. rotating rod; 12. roller; 13. passive rope I; 14. passive rope II; 15. telescopic rod; 16. rotating wheel; 17. elastic rope; 18. stop plate. DETAILED DESCRIPTION

[0023] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application. Embodiment 1

[0024] Please refer to Figure 1 , a safety protection structure for a lifting stacker, including a shelf 1 for storing goods, and a lane is formed between two horizontal shelves 1. A pull cord switch 2 is provided at the bottommost layer of the lane on the side of the shelf 1. The stacker is located outside the side of the shelf 1 close to the pull cord switch 2. The stacker is driven by a motor to move in the lane between the two shelves 1 from the side close to the pull cord switch 2 to the side away from the pull cord switch 2. A pull cord body 3 is connected to the driving arm of the pull cord switch 2. The pull cord body 3 is horizontally arranged on the side of the shelf 1, and the pull cord body 3 can be directly pulled by manpower to drive the pull cord switch 2 and stop the operation of the stacker.

[0025] Please refer to Figure 3 and Figure 4 , a sliding box 5 is slidably connected to the side of the shelf 1 on one side of the pull cord body 3. The sliding box 5 is hollow and partially open towards the pull cord body 3. A strip-shaped groove is opened on the side of the sliding box 5 away from the shelf 1, and the strip-shaped groove is open towards the direction of the pull cord body 3. The sliding box 5 is slidably connected with a hook ring 6 through the strip-shaped groove opened on the side, and the hook ring 6 will be close to the outside of the pull cord body 3 after sliding in the strip-shaped groove. A weight block 7 is connected to the bottom end of the hook ring 6. A blocking block 9 is provided below the hook ring 6 and is slidably connected to the inner side of the sliding box 5. That is, a sliding groove for facilitating the sliding of the blocking block 9 is opened on the inner wall of the sliding box 5. While the sliding groove enables the blocking block 9 to slide closely along the inner wall of the sliding box 5, it can slide to release the hook ring 6. One side of the blocking block 9 close to the pull cord switch 2 is connected to the end of a safety cord 10. When the stacker starts suddenly, manually pull the safety cord 10 to make the blocking block 9 slide horizontally towards the direction close to the pull cord switch 2 and release the hook ring 6, so that the hook ring 6 and the weight block 7 slide along the strip-shaped groove opened on the side of the sliding box 5 to be close to the outside of the pull cord body 3, and make the hook ring 6 hang on the outside of the pull cord body 3, so that the weight block 7 pulls the pull cord body 3 to move downward, and the pull cord body 3 pulls and stretches the driving arm to make the pull cord switch 2 cut off the control circuit. That is, by directly pulling the safety cord 10, the action difficulty of the worker pulling the drive is reduced, and the gravity of the weight block 7 pulls the hook ring 6 to act on the pull cord body 3, and the pull cord body 3 is directly pulled to drive the pull cord switch 2, which can control the pulling force and reduce the situation of damaging the pull cord switch 2 due to excessive force caused by the worker's panic, and improve the service life and use effectiveness of the pull cord switch 2. Embodiment 2

[0026] Embodiment 2 relies on Embodiment 1. Please refer to Figure 3, the top end of the sliding box 5 is connected with a rotating wheel 16 through a telescopic rod 15. The sliding box 5 is slidably connected to a part of the shelf 1 above the pulling rope body 3 through the rotating wheel 16. Inside the sliding box 5, there is a pressing plate 18 located above the rotating wheel 16. The pressing plate 18 and the rotating wheel 16 are located in the inner groove track of the upper shelf 1. When the rotating wheel 16 rotates, the sliding box 5 slides relative to the shelf 1. Below the pressing plate 18, an elastic rope 17 is connected, and the end of the elastic rope 17 away from the pressing plate 18 is connected to the end of the safety rope 10. On the side of the sliding box 5 away from the pulling rope switch 2, a driving rope 8 is connected, and elastic buckles are connected to the ends of the driving rope 8 and the safety rope 10 away from the sliding box 5. The safety rope 10 and the driving rope 8 are connected to the safety belt on the surface of the person through the elastic buckles. Manually pulling the driving rope 8 drives the sliding box 5 to slide horizontally, so that the sliding box 5 is pulled by the person pulling the driving rope 8 and slides horizontally, making the sliding box 5 follow around the person. And after the sliding box 5 stops at the middle area position between the two snap rings 4, the person then proceeds with the work process in the roadway, enabling the sliding box 5 to effectively act on the release hook 6.

[0027] Please refer to Figure 2 and Figure 3 , the cross-sectional shape of the sliding box 5 is an arc-shaped guiding towards the pulling rope body 3, and after the hook 6 is released by the blocking block 9, it slides close to the outside of the pulling rope body 3. The sliding box 5 as a whole is made of a material not attracted by magnetism. Through the setting of the sliding box 5, the sliding box 5 will slide relative to the shelf 1 in the axial direction of the pulling rope body 3, and the person pulls the sliding box 5 by pulling the driving rope 8. When the safety rope 10 is pulled, the safety rope 10 will pull the blocking block 9 and the elastic rope 17, so that the elastic rope 17 pulls the pressing plate 18, making the pressing plate 18 squeeze the outside of the rotating wheel 16 to stop the movement of the sliding box 5. At the same time, the blocking block 9 is pulled to slide and release the hook 6, so that the hook 6 will move to the outside of the pulling rope body 3 after sliding in the strip-shaped groove, and the hook 6 will hook the outside of the pulling rope body 3, enabling the weight 7 to directly pull the pulling rope body 3 through the hook 6, so that the pulling rope body 3 will be pulled to drive the pulling rope switch 2 to act, stopping the stacker and improving the safety of workers entering the roadway for work.

[0028] Please refer to Figure 3 , the hook 6 is in the shape of a circular ring with an opening on the side close to the pulling rope body 3, and a magnetic block is provided on the inner arc of the hook 6. In the middle area of the axial direction of the pulling rope body 3, a material attracted by the magnetism of the hook 6 is connected. And due to the gravity pull of the weight 7, the hook 6 can stably hook on the outside of the pulling rope body 3. Through the action of the magnetic block, the hook 6 that has just moved to the outside of the pulling rope body 3 can be instantaneously stabilized, making the pulling of the pulling rope body 3 by the hook 6 stable and effective.

[0029] Please refer to Figure 1 and Figure 2, the gravity of the heavy block 7 is greater than the pulling force of the driving pull - rope switch 2. The pulling force of the gravity of the heavy block 7 acting on the pull - rope body 3 can directly and stably pull the pull - rope body 3 to drive the pull - rope switch 2. Moreover, through the gravity of the heavy block 7, the magnitude of the pulling force received by the pull - rope body 3 can be stabilized, so that the pull - rope switch 2 is effectively driven. And when the worker fails to notice the sudden start of the stacker, the worker inside the roadway will be directly pushed by the moving stacker in the direction away from the pull - rope switch 2. Then the worker directly pulls the safety rope 10 through the elastic buckle connected to himself, so that the safety rope 10 will pull the blocking block 9, causing the blocking block 9 to release the hook 6. The hook 6 moves closer to the pull - rope body 3 and hooks the outside of the pull - rope body 3. The gravity of the heavy block 7 pulls the pull - rope body 3 through the hook 6 to drive the pull - rope switch 2, stopping the stacker in time, enabling the worker to passively stop the operation of the stacker in time, and making the work safer.

[0030] Please refer to Figure 2 and Figure 3 , the driving rope 8 is a green belt, the safety rope 10 is a red belt, the elastic rope 17 is made of elastic material, and the length of the elastic rope 17 is shorter than the length of the blocking block 9 sliding to release the hook 6. That is, when the safety rope 10 pulls the blocking block 9 to act and release the hook 6, the elastic rope 17 will first be taut and then stretched, making the force of the elastic rope 17 pulling the backing plate 18 gradually increase, that is, enhancing the effect of stopping the extrusion of the rotating wheel 16. When the safety rope 10 is in a horizontally taut state, the driving rope 8 is still in a slack state. After the safety rope 10 is pulled, the safety rope 10 will drive the blocking block 9 and the backing plate 18 to move, causing the blocking block 9 to slide horizontally to release the hook 6, and the backing plate 18 to move downward to squeeze the rotating wheel 16. Through the color distinction between the driving rope 8 and the safety rope 10, it can help the worker pull the driving rope 8 to move during daily use, and in case of an emergency, the worker can pull the red safety rope 10 in time to stop the stacker. Embodiment Three

[0031] Embodiment Three relies on Embodiment Two. Please refer to Figure 2 and Figure 3, equally spaced movable sleeves are sleeved on the outer side of the draw rope body 3. A transverse rotating rod 11 is connected to the inner side of the snap ring 4. A roller 12 located below the draw rope body 3 is connected to the outer side of the rotating rod 11. A passive rope I 13 is wound around the outer side of the rotating rod 11 away from the shelf 1. A passive rope II 14 is wound around the side of the rotating rod 11 close to the shelf 1. And the passive rope I 13 and the passive rope II 14 are arranged at positions close to the draw rope body 3. When the hook ring 6 is released by the blocking block 9 and moves towards the draw rope body 3, the opening of the hook ring 6 can also hook the passive rope I 13 and the passive rope II 14, so that the passive rope I 13 and the passive rope II 14 will also be pulled by the hook ring 6 to act. A disc spring is connected to the outer side of the end of the rotating rod 11 close to the shelf 1. The disc spring elastically drives the rotating rod 11 to be in a static state, that is, through the disc spring, it is controlled that the passive rope I 13 and the passive rope II 14 wound around the outer sides of both ends of the rotating rod 11 can be in a stable winding state, and the roller 12 is in a static state below the draw rope body 3, which is convenient for the subsequent effect of both ends of the passive rope I 13 after being pulled.

[0032] Please refer to Figure 3 , the circumferential profile of the roller 12 coincides with the outer profile of the draw rope body 3. The shape setting of the roller 12 increases the contact surface between the roller 12 and the outer side of the draw rope body 3. Furthermore, it increases the force for the roller 12 to drive the draw rope body 3 through the contact surface, helping the draw rope body 3 to move when it is in the pulled section. On the side of this section of the draw rope body 3 close to the draw rope switch 2, it is pulled and moved, while on the side away from the draw rope switch 2, it is fixed. The effect is that all the lengths of the draw rope body 3 deformed by being pulled are more pulled from the side close to the draw rope switch 2, which is convenient for the draw rope body 3 to be pulled and then drive the draw rope switch 2 due to the pulling of the draw rope body 3, so that the stacker can stop quickly.

[0033] Please refer to Figure 3, the passive rope Ⅰ 13 and the passive rope Ⅱ 14 are arranged in sequence between adjacent snap rings 4, that is, the passive rope Ⅰ 13 and the passive rope Ⅱ 14 are not between the same two snap rings 4, and the winding directions of both sides of the passive rope Ⅰ 13 and the passive rope Ⅱ 14 outside the two side rotating rods 11 are different. When the middle regions of the passive rope Ⅰ 13 and the passive rope Ⅱ 14 are pulled, the sides of the passive rope Ⅰ 13 and the passive rope Ⅱ 14 close to the pull rope switch 2 will be pulled away from the pull rope switch 2, causing the passive rope Ⅰ 13 and the passive rope Ⅱ 14 to drive the rotating rod 11 and the roller 12 to rotate, and the rotation of the roller 12 drives the pull rope body 3 to move away from the pull rope switch 2. When the middle regions of the passive rope Ⅰ 13 and the passive rope Ⅱ 14 are pulled, the other sides of the passive rope Ⅰ 13 and the passive rope Ⅱ 14 close to the pull rope switch 2 will be pulled towards the pull rope switch 2, causing the passive rope Ⅰ 13 and the passive rope Ⅱ 14 to drive the rotating rod 11 and the roller 12 to rotate, and the rotation of the roller 12 drives the pull rope body 3 to move away from the pull rope switch 2. For one of the passive rope Ⅰ 13 or the passive rope Ⅱ 14 that is pulled, both ends of this passive rope Ⅰ 13 or the passive rope Ⅱ 14 pull the part wound outside the rotating rod 11, causing the rotating rod 11 to drive the roller 12 to rotate, and the end of the pulled passive rope Ⅰ 13 or the passive rope Ⅱ 14 close to the pull rope switch 2 makes the roller 12 drive the pull rope body 3 to move towards the pulled position, thereby helping the pull rope body 3 move towards the pulled position more quickly after being pulled by the hook ring 6. And for the end of the pulled passive rope Ⅰ 13 or the passive rope Ⅱ 14 away from the pull rope switch 2, the roller 12 drives the pull rope body 3 to move away from the pulled position. After the pull rope body 3 is pulled, the end of the pulled section of the pull rope body 3 away from the pull rope switch 2 resists the tendency of the pull rope body 3 to move towards the pulled place due to the roller 12 driving the pull rope body 3. Thus, most of the deformation amount of the pull rope body 3 after being pulled is from the end of the pulled section close to the pull rope switch 2, increasing the amount by which the pull rope switch 2 is pulled by the pull rope body 3, thereby increasing the reaction speed of the pull rope switch 2 and enhancing the safety of workers' operations.

[0034] The usage method (working principle) of the present invention is as follows:

[0035] When the stacker stops running and the stacker is located outside the pull rope switch 2 on the side of the shelf 1, let the personnel enter the inner side of the roadway, set the elastic snap fasteners of the safety rope 10 and the drive rope 8 on the safety belt worn outside the personnel. When the personnel walk inward, the horizontal movement of the sliding box 5 is carried out by directly pulling the drive rope 8, and stop at the position where work needs to be carried out to perform the manual work process.

[0036] When the worker discovers that the stacker starts suddenly, the worker can directly pull the safety rope 10 buckled on the surface of the safety belt. After the safety rope 10 is pulled, the end of the safety rope 10 inside the sliding box 5 will simultaneously pull the blocking block 9 and the elastic rope 17, so that the elastic rope 17 pulls the pressing plate 18 to squeeze the rotating wheel 16, causing the rotating wheel 16 to stop rolling under the squeezing force, and then stopping the movement of the sliding box 5. At the same time, after the safety rope 10 pulls the blocking block 9, the blocking block 9 slides horizontally inside the sliding box 5 to release the hook 6. The hook 6 will slide inside the strip-shaped groove opened on the surface of the sliding box 5 in the direction close to the pulling rope body 3. Then, after the hook 6 approaches the outside of the pulling rope body 3, it will directly hook on the outside of the pulling rope body 3, and then act on the pulling rope body 3 to pull the pull rope switch 2 connected to one side of the pulling rope body 3, so that the pull rope switch 2 is driven to cut off the control circuit, causing the stacker to stop running.

[0037] When the hook 6 moves towards the pulling rope body 3 and hooks on the outside of the pulling rope body 3, the hook 6 will simultaneously hook on the outside of the passive rope Ⅰ13 or the passive rope Ⅱ14, so that the gravity of the hook 6 and the weight 7 acts on the passive rope Ⅰ13 and the passive rope Ⅱ14, causing the passive rope Ⅰ13 or the passive rope Ⅱ14 to be pulled by the hook 6 and the weight 7. The section pulled by the hook 6 is the driving section, that is, both ends of the driving section passive rope Ⅰ13 or the passive rope Ⅱ14 will move towards the middle area.

[0038] The end of the driving section of the passive rope Ⅰ13 and the passive rope Ⅱ14 close to the pull rope switch 2 will gradually release the part wound around the outside of the rotating rod 11. When the passive rope Ⅰ13 or the passive rope Ⅱ14 is released, it will drive the rotating rod 11 to rotate. Then, the roller 12 will be driven by the rotating rod 11 to rotate, so that the roller 12 at the end of the driving section close to the pull rope switch 2 drives the pulling rope body 3 to move towards the middle area of the driving section due to rotation, thereby accelerating the movement of the pulling rope body 3 towards the driving section and quickly pulling and driving the pull rope switch 2.

[0039] The end of the driving section of the passive rope Ⅰ13 and the passive rope Ⅱ14 far from the pull rope switch 2 will gradually release the part wound around the outside of the rotating rod 11. When the passive rope Ⅰ13 or the passive rope Ⅱ14 is released, it will drive the rotating rod 11 to rotate. Then, the roller 12 will be driven by the rotating rod 11 to rotate, so that the roller 12 at the end of the driving section close to the pull rope switch 2 drives the pulling rope body 3 to move away from the middle area of the driving section due to rotation. Thus, the passive rope Ⅰ13 and the passive rope Ⅱ14 on the side of the driving section far from the pull rope switch 2 will drive the rotation of the roller 12 at the end far from the pull rope switch 2, and the rotation of the roller 12 drives the pulling rope body 3 to resist the amount of movement of the pulling rope body 3 on the side not connected to the pull rope switch 2 but pulled by the hook 6 and the weight 7 towards the middle area of the driving section, thereby accelerating the reaction speed of the end of the pulling rope body 3 close to the pull rope switch 2 after being pulled and improving the action effect.

[0040] When the worker fails to notice the sudden start of the stacker, if the worker is inside the roadway, the stacker will directly push the worker's body away from the pull cord switch 2. The safety cord 10 sleeved outside the worker's body will be pulled to move away from the pull cord switch 2, and then the safety cord 10 will be tightened to repeat the above process of releasing the driving hook 6, and the pull cord switch 2 will be driven to cut off the control circuit, causing the stacker to stop moving.

[0041] When the driving of the pull cord switch 2 is completed, the hook 6 is placed back inside the sliding box 5 again, and the elastic force of the disc spring restores the passive rope I 13 and the passive rope II 14 to their initial state of winding outside the rotating rod 11.

Claims

1. A safety protection structure for a lifting stacker, comprising a goods shelf (1) for storing goods, and a lane is formed between two lateral goods shelves (1). A pull cord switch (2) is provided at the bottommost layer of the lane on the side of the goods shelf (1). The stacker is located outside the side of the goods shelf (1) close to the pull cord switch (2), and the stacker is driven by a motor to move in the lane between the two goods shelves (1) from one side close to the pull cord switch (2) to the other side away from the pull cord switch (2), characterized in that, The driving arm of the pull rope switch (2) is connected with a pull rope body (3), and the pull rope body (3) is horizontally arranged on the side of the shelf (1); A sliding box (5) is slidably connected to the side of the shelf (1) and is located on one side of the pull rope body (3). The sliding box (5) is hollow and partially open towards the pull rope body (3). A strip-shaped groove is formed on the side of the sliding box (5) away from the shelf (1), and the strip-shaped groove opens towards the direction of the pull rope body (3). The sliding box (5) is slidably connected with a hook ring (6) through the strip-shaped groove formed on the side, and after the hook ring (6) slides in the strip-shaped groove, it will approach the outside of the pull rope body (3). A weight block (7) is connected to the bottom end of the hook ring (6). A blocking block (9) is arranged below the hook ring (6) and is slidably connected to the inner side of the sliding box (5). One side of the blocking block (9) close to the pull rope switch (2) is connected to the end of a safety rope (10); When the stacker suddenly starts, manually pull the safety rope (10) to make the blocking block (9) slide horizontally towards the direction close to the pull rope switch (2) and release the hook ring (6), so that the hook ring (6) and the weight block (7) slide along the strip-shaped groove formed on the side of the sliding box (5) and approach the outside of the pull rope body (3), make the hook ring (6) hang on the outside of the pull rope body (3), make the weight block (7) pull the pull rope body (3) to move downward, and the pull rope body (3) pulls and stretches the driving arm to make the pull rope switch (2) cut off the control circuit.

2. The safety protection structure of a lifting stacker according to claim 1, characterized in that, The top end of the sliding box (5) is connected with a rotating wheel (16) through a telescopic rod (15). An abutting plate (18) is arranged inside the sliding box (5) above the rotating wheel (16). An elastic rope (17) is connected below the abutting plate (18), and the end of the elastic rope (17) away from the abutting plate (18) is connected to the end of the safety rope (10). A driving rope (8) is connected to the side of the sliding box (5) away from the pull rope switch (2), and elastic buckles are connected to the ends of the driving rope (8) and the safety rope (10) away from the sliding box (5). The safety rope (10) and the driving rope (8) are connected to the safety belt on the surface of the person through the elastic buckles, and manually pulling the driving rope (8) drives the sliding box (5) to slide horizontally.

3. The safety protection structure of a lifting stacker according to claim 2, characterized in that, The cross-sectional shape of the sliding box (5) is an arc-shaped guiding towards the pull rope body (3), and after the hook ring (6) is released by the blocking block (9), it slides and approaches the outside of the pull rope body (3). The sliding box (5) as a whole is made of a material that is not attracted by magnetism.

4. The safety protection structure of a lifting stacker according to claim 3, characterized in that, The hook ring (6) is in a circular ring shape with an opening on the side close to the pull rope body (3), and a magnetic block is arranged on the inner side of the arc of the hook ring (6). A material attracted by the hook ring (6) magnetically is connected to the axial middle area of the pull rope body (3).

5. The safety protection structure of a lifting stacker according to claim 3, wherein, The gravity of the weight block (7) is greater than the pulling force for driving the pull rope switch (2).

6. The safety protection structure of a lifting stacker according to claim 2, characterized in that, The driving rope (8) is a green belt, the safety rope (10) is a red belt, and the elastic rope (17) is made of an elastic material. When the safety rope (10) is in a horizontally taut state, the driving rope (8) is still in a slack state. After the safety rope (10) is pulled, the safety rope (10) will drive the blocking block (9) and the abutting plate (18) to move, make the blocking block (9) slide horizontally to release the hook ring (6), and the abutting plate (18) moves downward to squeeze the rotating wheel (16).

7. The safety protection structure of a lifting stacker according to claim 2, characterized in that, The outer side of the pulling rope body (3) is movably sleeved with snap rings (4) at equal intervals. The inner side of the snap ring (4) is connected with a laterally arranged rotating rod (11). The outer side of the rotating rod (11) is connected with a roller (12) located below the pulling rope body (3). The outer side of the rotating rod (11) far from the shelf (1) is wound with a passive rope I (13). The side of the rotating rod (11) close to the shelf (1) is wound with a passive rope II (14). The outer side of the end of the rotating rod (11) close to the shelf (1) is connected with a disc spring, and the disc spring elastically drives the rotating rod (11) to be in a static state.

8. The safety protection structure of a lifting stacker according to claim 7, characterized in that, The circumferential contour of the roller (12) coincides with the outer contour of the pulling rope body (3).

9. The safety protection structure of a lifting stacker according to claim 7, characterized in that, The passive rope I (13) and the passive rope II (14) are arranged in sequence between adjacent snap rings (4), and the winding directions of both sides of the passive rope I (13) and the passive rope II (14) on the outer sides of the two rotating rods (11) are different. When the middle regions of the passive rope I (13) and the passive rope II (14) are pulled, the sides of the passive rope I (13) and the passive rope II (14) close to the pulling rope switch (2) will be pulled away from the pulling rope switch (2), causing the passive rope I (13) and the passive rope II (14) to pull the rotating rod (11) and the roller (12) to rotate, and the rotation of the roller (12) drives the pulling rope body (3) to move away from the pulling rope switch (2). When the middle regions of the passive rope I (13) and the passive rope II (14) are pulled, the other sides of the passive rope I (13) and the passive rope II (14) close to the pulling rope switch (2) will be pulled towards the pulling rope switch (2), causing the passive rope I (13) and the passive rope II (14) to pull the rotating rod (11) and the roller (12) to rotate, and the rotation of the roller (12) drives the pulling rope body (3) to move away from the pulling rope switch (2).

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