Aisle stacking device for conveying paper stacks

Abstract

The invention relates to a roadway stacking device, in particular to a roadway stacking device for conveying paper stacks, which comprises two fixed rails and a movable table serving as a bearing main body, a roadway stacking lifting body is mounted at the top of the movable table, and first fixed frames symmetrically distributed along the movable table are fixedly connected to the bottom of the movable table; a motor is fixedly connected to the middle of the first fixing frame, and first moving frames symmetrically distributed along the first fixing frame are slidably connected to the first fixing frame. By arranging a double-roller redundant structure (the main wheel and the standby wheel) and integrating the transverse sliding mechanism on the first moving frame, when the performance of the main wheel of the rollers is degraded due to long-term abrasion, the main wheel can be automatically switched to the standby wheel to continue to carry out load-bearing operation without shutdown; the problem of production line interruption caused by abrasion faults of a traditional single-wheel structure is fundamentally solved, and the continuous operation capacity and the device usability of a warehousing system are greatly improved.

Description

Technical Field

[0001] This invention relates to a stacking device for aisle, and more particularly to a stacking device for conveying paper stacks in anisle. Background Technology

[0002] In automated storage and retrieval systems (AS / RS), stacker cranes, as core material handling equipment, are widely used in high-density storage scenarios in industries such as paper, logistics, and food. Especially in the storage environment of paper stacks (such as rolls of paper and corrugated board), stacker cranes need to operate continuously under harsh conditions of high load, high frequency, and high dust levels. The reliability of their traveling mechanism directly affects the operational efficiency and safety of the entire warehousing system. As key load-bearing components in contact with the tracks, the traveling wheels endure heavy friction and impact over long periods, making them highly susceptible to surface wear, flange deformation, and even structural cracking.

[0003] Currently, most mainstream stacker cranes in aisle systems use a single set of traveling wheels, meaning only one set of rollers on each side contacts the track for load-bearing. If these rollers experience severe wear due to prolonged use, the wheel diameter will decrease, the equipment's operating height will drop, and this can lead to a chain reaction of problems such as machine tilting, positioning deviations, and track jamming. In severe cases, this can cause stacks of paper to tip over, equipment derailment, or even safety accidents. Existing technologies primarily rely on periodic manual inspections or reactive maintenance after a malfunction, lacking effective real-time monitoring and proactive response mechanisms. This not only increases maintenance costs but also causes prolonged production line interruptions in the event of sudden failures, making it difficult to meet the high availability and high continuity requirements of modern intelligent warehousing.

[0004] While some stacker cranes have attempted to introduce wheel pressure sensors or vibration monitoring devices for condition warnings, their functionality remains at the "sensing" level, unable to automatically execute mechanical intervention after detecting anomalies. Once the performance of the traveling wheels deteriorates beyond the safety threshold, manual intervention and machine shutdown for replacement are still required, with the average repair time typically lasting several hours. In industrial settings such as the paper industry, which emphasize continuous production, the economic losses caused by such unplanned downtime are particularly significant.

[0005] Therefore, there is an urgent need for a stacking device for paper stacking in aisles that can solve the problem of downtime caused by roller wear. Summary of the Invention

[0006] To overcome the drawback of downtime caused by roller wear, the present invention provides a stacking device for paper stacking in aisle conveying.

[0007] A stacking device for conveying paper stacks includes two fixed rails and a movable platform as the main support. A stacking lifting body is installed on the top of the movable platform. A first fixed frame symmetrically distributed along the bottom of the movable platform is fixedly connected to the bottom of the movable platform. A motor is fixedly connected to the middle of the first fixed frame. A first movable frame symmetrically distributed along the first fixed frame is slidably connected to the first fixed frame. A rotating sleeve symmetrically distributed along the first fixed frame is rotatably connected to the first fixed frame. The rotating sleeve is fixedly connected to the output shaft of the motor on the same side. The rotating sleeve is splinedly connected to a rotating shaft. Two rollers are installed on the side of the first movable frame near the fixed rails, and the two rollers are coaxially fixedly connected. One of the rollers contacts the fixed rails and rolls on them. Two meshing gears are rotatably connected to the side of the first movable frame near the rollers. The shaft of the roller is fixedly connected to the adjacent gear.

[0008] As a further preferred option, the roller is detachable from the first movable frame, and multiple fixing covers are bolted between the roller shaft and the first movable frame to facilitate the installation of the roller.

[0009] As a further preferred embodiment, the bottom of the moving platform is fixed with slide rails symmetrically distributed along the moving platform. A second fixed frame is fixed to each of the two slide rails on one side, and a cylinder is fixed to the second fixed frame. A sliding plate is slidably connected between each slide rail. The sliding plate is fixed to the telescopic end of the cylinder. A first guide groove is opened on the sliding plate, which is symmetrically distributed along the sliding plate. The first guide groove is used to push and pull the first moving frame back and forth to realize the switching of the rollers.

[0010] As a further preferred option, a piezoelectric vibration sensor is fixedly mounted on the moving platform, and the piezoelectric vibration sensor is electrically connected to the cylinder through the control module.

[0011] As a further preferred embodiment, a cam frame rotatably connects to the side of the moving platform, and a support frame slidably connects to the moving platform, with the convex surface of the cam frame rotating to contact the support frame. The support frame contacts the fixed rail downwards. Telescopic rods symmetrically distributed along the support frame are fixedly connected between the support frame and the moving platform. A fixed guide rail symmetrically distributed along the moving platform is fixedly connected to the bottom of the moving platform. A second moving frame is slidably connected to the fixed guide rail. A second guide groove symmetrically distributed along the sliding plate is opened on the sliding plate. One end of the second moving frame is slidably connected to the adjacent second guide groove, and the other end of the second moving frame is movably connected to the adjacent cam frame. The second guide groove is used to push and pull the second moving frame back and forth.

[0012] As a further preferred embodiment, the first guide groove is composed of two straight grooves and an inclined groove connecting the two straight grooves, and the second guide groove is composed of two inclined grooves and a straight groove connecting the two inclined grooves.

[0013] As a further preferred embodiment, a sleeve plate is fixedly connected to the moving platform and symmetrically distributed along the moving platform. A lifting plate is slidably connected inside the sleeve plate, and a wedge block for lifting the lifting plate is fixedly connected to the first moving frame.

[0014] As a further preferred option, a protruding post is provided on the side of the lifting plate near the wedge block, and the wedge block moves to contact the protruding post.

[0015] As a further preferred option, a limiting plate is fixedly attached to the moving platform and symmetrically distributed along the moving platform, and multiple guide wheels are rotatably connected to the limiting plate.

[0016] Compared with the prior art, the present invention has the following significant advantages: This invention, by setting up a dual-roller redundant structure (main roller and spare roller) and integrating a transverse sliding mechanism on the first moving frame, allows the machine to automatically switch to the spare roller to continue bearing loads without stopping when the performance of the main roller deteriorates due to long-term wear. This fundamentally solves the production line interruption problem caused by wear failure in traditional single-roller structures and greatly improves the continuous operation capability and equipment availability of the warehousing system.

[0017] This invention introduces an intelligent sensing system composed of a piezoelectric vibration sensor and a control module, which can monitor the running status of the roller in real time. When the vibration amplitude exceeds a preset threshold (indicating severe roller wear), it automatically triggers a switching process, realizing the transformation from "passive maintenance" to "active intervention", effectively avoiding sudden mechanical failures and reducing the risk of unplanned downtime.

[0018] This invention innovatively designs a synchronous lifting mechanism, employing a differentiated guide groove structure (the first guide groove is "straight-inclined-straight", and the second guide groove is "inclined-straight-inclined"). This allows a single cylinder to drive and coordinate the timing control of multiple actions such as lifting, switching, and resetting. Before the rollers switch, the entire moving platform is briefly lifted off the fixed rail to eliminate the positive pressure between the rollers and the fixed rail, significantly reducing switching resistance and ensuring smooth and reliable switching action. This avoids switching failure or mechanism damage due to friction jamming.

[0019] This invention adds a prompting mechanism consisting of a wedge block and a lifting plate. When the roller switching occurs, the lifting plate automatically pops up, providing maintenance personnel with intuitive status feedback, facilitating timely scheduling of roller replacement plans, preventing excessive use of spare wheels, and extending the overall lifespan of the walking mechanism.

[0020] This invention effectively suppresses the lateral sway of the mobile platform during high-speed operation by setting a limiting plate and guide wheels, thereby improving the walking accuracy and stability. It is especially suitable for paper stack storage and retrieval operations in high-bay warehouses where high positioning accuracy is required. Attached Figure Description

[0021] Figure 1This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a bottom view of the three-dimensional structure of the present invention.

[0023] Figure 3 This is a three-dimensional structural diagram of the first fixed frame, motor, and first movable frame of the present invention.

[0024] Figure 4 This is a three-dimensional structural diagram of the rotating shaft, rollers, and fixed cover of the present invention.

[0025] Figure 5 This is a three-dimensional structural diagram of the roller, fixed cover, gear, and other components of the present invention.

[0026] Figure 6 This is a three-dimensional structural diagram of the second fixing frame, cylinder, and sliding plate of the present invention.

[0027] Figure 7 This is a three-dimensional structural diagram of the components of the present invention, including the support frame, fixed guide rail, and second movable frame.

[0028] Figure 8 This is a three-dimensional structural diagram of the cam frame, support frame, and telescopic rod components of the present invention.

[0029] Figure 9 A three-dimensional structural diagram of the cam frame and support frame components of this invention.

[0030] Figure 10 A three-dimensional structural diagram of the invention components such as the sleeve plate, lifting plate, and limiting plate.

[0031] Figure 11 A three-dimensional structural diagram of the components of this invention, including the sleeve plate, the lifting plate, and the wedge block.

[0032] Figure 12 This is a three-dimensional structural diagram of the limiting plate and guide wheel of the present invention.

[0033] Wherein: 101: Fixed rail, 102: Moving platform, 103: Lane stacking lifting body, 104: First fixed frame, 105: Motor, 106: First moving frame, 107: Rotating sleeve, 108: Rotating shaft, 109: Roller, 110: Fixed cover, 111: Gear, 201: Second fixed frame, 202: Cylinder, 203: Sliding plate, 204: First guide groove, 205: Slide rail, 206: Piezoelectric vibration sensor, 301: Cam frame, 302: Bearing frame, 303: Telescopic rod, 304: Fixed guide rail, 305: Second moving frame, 306: Second guide groove, 401: Sleeve plate, 402: Lifting plate, 403: Wedge block, 501: Limiting plate, 502: Guide wheel. Detailed Implementation

[0034] 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.

[0035] Example 1: This invention provides a stacking device for paper stacking in an aisle, particularly suitable for high-frequency, high-reliability handling of heavy paper stacks such as rolls and cardboard in automated warehouses. By integrating redundant wheel sets, an automatic switching mechanism, and an intelligent sensing system, this device automatically activates the spare wheel without stopping the machine when the main wheel wears to a critical state, significantly improving the continuity of equipment operation and the overall availability of the warehousing system.

[0036] like Figures 1 to 5 As shown, the aisle stacking device includes two parallel fixed rails 101, serving as the basic track structure for the entire stacker to move along the aisle direction. It also includes a moving platform 102, which acts as the main support structure. An aisle stacking lift 103 is mounted on top of the moving platform 102 for vertical lifting, lowering, and horizontal storage / retrieval of the paper stacks. A first fixed frame 104, symmetrically distributed along its bottom, is fixedly connected to the bottom of the moving platform 102. The first fixed frame 104 is a rigid support structure used to install the drive and travel components. A motor 105 is fixedly connected to the middle position of the first fixed frame 104, serving as the travel drive source and providing rotational power to the rollers 109.

[0037] A first movable frame 106, symmetrically distributed along itself, is slidably connected to the first fixed frame 104. The first movable frame 106 can slide on the first fixed frame 104 in a direction perpendicular to the fixed rail 101, used to switch the position of the rollers 109. Simultaneously, a rotating sleeve 107, symmetrically distributed along itself, is rotatably connected to the first fixed frame 104. The rotating sleeve 107 is fixedly connected to the output shaft of the motor 105 on the same side, allowing the rotational motion output by the motor 105 to be directly transmitted to the rotating sleeve 107. The rotating sleeve 107 uses a spline structure to connect with the rotating shaft 108, ensuring reliable torque transmission during axial relative displacement. Two rollers 109 are installed on the side of the first movable frame 106 closest to the fixed rail 101. The two rollers 109 are coaxially fixed, forming a double-wheel load-bearing structure. The outer roller 109 serves as the primary roller, contacting and rolling with the fixed rail 101, while the inner roller 109 serves as a spare roller, in a non-contact standby state. The first movable frame 106 is also rotatably connected to two meshing gears 111 on the side near the roller 109. One gear 111 is fixed to the shaft of the roller 109, and the other gear 111 is connected to the end of the rotating shaft 108, so that the rotation of the rotating shaft 108 is transmitted to the roller 109 through the gear pair, driving it to roll along the fixed rail 101.

[0038] To further improve maintenance convenience, the roller 109 and the first movable frame 106 are detachably connected. Specifically, two fixing covers 110 are bolted between the shaft of the roller 109 and the first movable frame 106. The fixing covers 110 are arranged circumferentially around the shaft of the roller 109, which not only limit the movement but also facilitates quick disassembly when the roller 109 needs to be replaced, avoiding the need to disassemble the entire machine.

[0039] like Figures 6 to 7 As shown, to achieve the automatic switching function of the rollers 109, the bottom of the moving platform 102 is also fixedly connected to slide rails 205 symmetrically distributed along them. A second fixed frame 201 is fixedly connected to each of the two slide rails 205 on one side, and a cylinder 202 is mounted on the second fixed frame 201. A sliding plate 203 is slidably connected between each slide rail 205. The sliding plate 203 is fixedly connected to the telescopic end of the cylinder 202, and is driven by the cylinder 202 to move back and forth along the slide rail 205. A first guide groove 204 is provided on the sliding plate 203, symmetrically distributed along it. The first guide groove 204 is used to cooperate with the first moving frame 106. During the movement of the sliding plate 203, the first moving frame 106 is pushed and pulled to slide laterally along the first fixed frame 104, thereby realizing the interchange of the positions of the main wheel and the spare wheel of the rollers 109.

[0040] Considering that the wear of the roller 109 after long-term operation will lead to increased equipment vibration, a piezoelectric vibration sensor 206 is fixedly connected to the moving platform 102. This sensor monitors the vibration intensity in real time during the movement process. When the wear of the roller 109 reaches a preset threshold, the vibration amplitude increases significantly. The piezoelectric vibration sensor 206 will generate a corresponding electrical signal, which, after being processed by the control module, will trigger the cylinder 202 to automatically start the roller 109 switching process. The control module and the cylinder 202 are electrically connected to form a closed-loop control system, realizing an automated response of "sensing-judgment-execution".

[0041] like Figure 1 , Figure 7 , Figure 8 and Figure 9 As shown, due to the significant positive pressure between the roller 109 and the fixed rail 101 under load, direct lateral movement switching encounters extremely high resistance and may even cause jamming. Therefore, this device incorporates a synchronous lifting mechanism: a cam frame 301 rotatably connects to the side of the moving platform 102, and a support frame 302 slidably connects to the moving platform 102, also symmetrically. The convex surface of the cam frame 301 contacts the support frame 302 during rotation, and the lower end of the support frame 302 can abut against the fixed rail 101, forming a temporary support point. Telescopic rods 303, symmetrically distributed along the support frame 302, are fixedly connected between the support frame 302 and the moving platform 102 for buffering, guiding, and resetting. Furthermore, a fixed guide rail 304 symmetrically distributed along the bottom of the moving platform 102 is fixedly connected, and a second moving frame 305 is slidably connected to the fixed guide rail 304. The sliding plate 203 is also provided with second guide grooves 306 symmetrically distributed along it. One end of the second moving frame 305 is slidably connected to the adjacent second guide groove 306, and the other end is movably connected to the adjacent cam frame 301 through a connecting rod or push rod. When the sliding plate 203 moves forward, the second guide groove 306 can push the second moving frame 305 to slide outward along the fixed guide rail 304, thereby driving the cam frame 301 to rotate. When the cam frame 301 initially rotates, its convex surface presses down on the support frame 302 to make it close to the fixed rail 101; as it continues to rotate, since the support frame 302 can no longer move downward, the reaction force pushes the cam frame 301 upward, thereby driving the entire moving table 102 and its upper structure to be briefly lifted through the cam frame 301, causing the roller 109 to disengage from the fixed rail 101, greatly reducing the switching resistance.

[0042] The guide groove structure is further optimized: the first guide groove 204 consists of two straight grooves and an inclined groove connecting the two straight grooves, forming a three-segment path of "straight-inclined-straight"; the second guide groove 306 consists of two inclined grooves and a straight groove connecting the two inclined grooves, presenting an "inclined-straight-inclined" layout. This differentiated guide groove design allows the sliding plate 203 to complete the coordinated linkage of the three actions of "lifting-switching-resetting" in a single stroke, ensuring a smooth and orderly switching process. Specifically: During the process of cylinder 202 extending and driving sliding plate 203 to move forward, the first inclined groove of the second guide groove 306 first pushes the second moving frame 305 to slide outward along the fixed guide rail 304 to achieve the lifting action. At this time, the first straight groove of the first guide groove 204 first slides relative to the first moving frame 106. The inclined groove of the first guide groove 204 then pushes the first moving frame 106 to slide along the first fixed frame 104 to achieve the switching action. At this time, the straight groove of the second guide groove 306 slides relative to the second moving frame 305. Finally, the second inclined groove of the second guide groove 306 pulls the second moving frame 305 to slide inward along the fixed guide rail 304 to achieve the lowering and resetting action. The second straight groove of the first guide groove 204 slides relative to the first moving frame 106.

[0043] like Figures 10 to 11 As shown, to enhance the maintenance prompt function, a sleeve plate 401 symmetrically distributed along the mobile platform 102 is fixedly connected to it, and a lifting plate 402 is slidably connected inside the sleeve plate 401. A wedge block 403 for lifting the lifting plate 402 is fixedly connected to the first mobile frame 106, and a protruding post is provided on the side of the lifting plate 402 near the wedge block 403. When the first mobile frame 106 moves outward to switch the roller 109, the wedge block 403 on it moves accordingly and contacts the protruding post on the lifting plate 402, pushing the lifting plate 402 to slide upward out of the sleeve plate 401 to a certain height. This protruding structure can be visually identified by inspection personnel or sensed by a photoelectric switch, serving as a clear signal that "roller 109 switching has occurred," reminding maintenance personnel to promptly arrange for the replacement of worn rollers 109, and preventing spare wheels from also entering the wear stage and becoming unusable.

[0044] like Figures 11 to 12 As shown, in addition, a limiting plate 501 symmetrically distributed along the moving platform 102 is fixedly connected to the moving platform 102, and multiple guide wheels 502 are rotatably connected to the limiting plate 501. The guide wheels 502 contact the side of the fixed rail 101 to limit the lateral sway of the moving platform 102 during operation, improve the stability of travel, and effectively prevent the risk of derailment, especially under high-speed start-stop or load eccentricity conditions.

[0045] In summary, this embodiment fully realizes four core functions: real-time wear monitoring of roller 109, automatic lifting under load, near-seamless switching between main and backup rollers of roller 109, and visual prompts for switching status. It forms a highly reliable, downtime-free, and easy-to-maintain aisle stacking and walking system, which is particularly suitable for industrial scenarios such as the paper industry that have stringent requirements for continuous operation.

[0046] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. All equivalent substitutions made within the principles of the present invention should be included within the scope of protection of the present invention. Contents not described in detail in this invention are existing technologies known to those skilled in the art.

Claims

1. A stacking device for conveying paper stacks in a tunnel, characterized in that: It includes two fixed rails (101) and a moving platform (102) as the main support. A roadway stacking elevator (103) is installed on the top of the moving platform (102). A first fixed frame (104) is fixedly connected to the bottom of the moving platform (102) and is symmetrically distributed along the moving platform (102). A motor (105) is fixedly connected to the middle of the first fixed frame (104). A first moving frame (106) is slidably connected to the first fixed frame (104) and is rotatably connected to the first fixed frame (104) and is symmetrically distributed along the first fixed frame (104). (107) The rotating sleeve (107) is fixedly connected to the output shaft of the motor (105) on the same side. The rotating sleeve (107) is splined to a rotating shaft (108). Two rollers (109) are installed on the side of the first moving frame (106) near the fixed rail (101), and the two rollers (109) are coaxially fixedly connected. One of the rollers (109) contacts the fixed rail (101) and rolls on it. Two meshing gears (111) are rotatably connected on the side of the first moving frame (106) near the roller (109). The shaft of the roller (109) is fixedly connected to the adjacent gear (111).

2. A stacking device for conveying paper stacks according to claim 1, characterized in that: The roller (109) is detachable from the first movable frame (106). Multiple fixing covers (110) are bolted between the shaft of the roller (109) and the first movable frame (106) to enable the installation of the roller (109).

3. A stacking device for conveying paper stacks according to claim 2, characterized in that: The bottom of the moving platform (102) is fixed with slide rails (205) symmetrically distributed along the moving platform (102). On one side, two slide rails (205) are fixed with a second fixed frame (201). A cylinder (202) is fixed on the second fixed frame (201). A sliding plate (203) is slidably connected between each slide rail (205). The sliding plate (203) is fixed to the telescopic end of the cylinder (202). A first guide groove (204) is opened on the sliding plate (203) symmetrically distributed along the sliding plate (203). The first guide groove (204) is used to push and pull the first moving frame (106) back and forth to realize the switching of the roller (109).

4. A stacking device for conveying paper stacks according to claim 3, characterized in that: A piezoelectric vibration sensor (206) is fixedly mounted on the mobile stage (102), and the piezoelectric vibration sensor (206) is electrically connected to the cylinder (202) through the control module.

5. A stacking device for conveying paper stacks according to claim 4, characterized in that: A cam frame (301) symmetrically distributed along the side of the movable platform (102) is rotatably connected to the side of the movable platform (102). A support frame (302) symmetrically distributed along the movable platform (102) is slidably connected to the movable platform (102). The convex surface of the cam frame (301) rotates and contacts the support frame (302). The support frame (302) contacts the fixed rail (101) downwards. Telescopic rods (303) symmetrically distributed along the support frame (302) are fixed between the support frame (302) and the movable platform (102). The bottom of the movable platform (102) A fixed guide rail (304) is fixedly connected to the movable platform (102) and symmetrically distributed along the movable platform (102). The fixed guide rail (304) is slidably connected to the second movable frame (305). A second guide groove (306) is opened on the sliding plate (203) and symmetrically distributed along the sliding plate (203). One end of the second movable frame (305) is slidably connected to the adjacent second guide groove (306), and the other end of the second movable frame (305) is movably connected to the adjacent cam frame (301). The second guide groove (306) is used to push and pull the second movable frame (305) to move back and forth.

6. A stacking device for conveying paper stacks according to claim 5, characterized in that: The first guide groove (204) consists of two straight grooves and an inclined groove connecting the two straight grooves, and the second guide groove (306) consists of two inclined grooves and a straight groove connecting the two inclined grooves.

7. A stacking device for conveying paper stacks according to claim 6, characterized in that: A sleeve plate (401) is fixedly connected to the moving platform (102) and symmetrically distributed along the moving platform (102). A lifting plate (402) is slidably connected inside the sleeve plate (401). A wedge block (403) for lifting the lifting plate (402) is fixedly connected to the first moving frame (106).

8. A stacking device for conveying paper stacks according to claim 7, characterized in that: The lifting plate (402) has a protruding post on the side near the wedge block (403), and the wedge block (403) moves to contact the protruding post.

9. A stacking device for paper stacking in a lane according to claim 8, characterized in that: A limiting plate (501) is fixedly connected to the moving platform (102) and symmetrically distributed along the moving platform (102). Multiple guide wheels (502) are rotatably connected to the limiting plate (501).

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