Single upright light weight stacker

Abstract

The utility model relates to the technical field of stacking machine, disclose a single stand column light -duty stacking machine, including two parallelly arranged ground rails, stand column, load platform, hoisting mechanism and running gear, and the ground rail bottom is fixedly connected with the locating post, and the top slidingly connected with the support plate, and the stand column is installed at the support plate top, and the stand column front end slidingly connected with the mounting seat, and the load platform is installed at the mounting seat front end, and the mounting seat is equipped with the anti -fall mechanism between the stand column front end, and this mechanism includes the locating block fixed at the stand column groove both ends and the fixed box installed at the mounting seat rear end, and the rotation of locating rod is controlled through the drive assembly in the fixed box. The utility model normal operation, and the locating rod is separated from the locating block, when the load platform falls, drive component acts quickly, makes locating rod rotate and clamps into below the locating block, thereby emergency brake, effectively prevent the load platform from falling, and the safety is high, and the compact structure is reliable.

Description

Technical Field

[0001] This utility model relates to the field of stacker crane technology, specifically a single-column lightweight stacker crane. Background Technology

[0002] Stacker cranes are core equipment in modern warehousing systems, used for the automated storage and retrieval of goods between racks and aisles. Single-column stacker cranes are widely used in light-duty warehousing applications due to their compact structure and lower cost. However, traditional single-column stacker cranes rely on wire ropes or chains for lifting their loading platforms. If the lifting mechanism malfunctions (e.g., a broken wire rope or a runaway motor), the loading platform may fall at high speed due to loss of traction, causing damage to goods and posing a serious threat to equipment and personnel safety.

[0003] While existing technologies offer various fall protection devices, such as friction-type safety clamps or ratchet and pawl mechanisms, most are complex in structure, occupy a large space, or suffer from excessive impact force or unstable braking upon triggering. These limitations make them unsuitable for lightweight stacker cranes that require a compact design and high operating speeds. Therefore, there is an urgent need for a compact, responsive, and reliable fall protection mechanism for use on single-column lightweight stacker cranes. Utility Model Content

[0004] The technical problem this invention aims to solve is that existing lightweight stacker crane anti-fall devices have complex structures and low reliability. This invention effectively improves the safety of equipment operation by integrating a novel mechanical anti-fall mechanism.

[0005] To solve the above problems, the technical solution of this utility model is: a single-column lightweight stacker crane, including two ground rails, a column set on the ground rails, a loading platform that can be raised and lowered on the column, a lifting mechanism for driving the loading platform to rise and fall, and a traveling mechanism for driving the column to travel along the ground rails.

[0006] The two ground rails are arranged in parallel, and a positioning column is fixed to their bottom and a support plate is slidably connected to their top. The column is installed on the top of the support plate.

[0007] The column is slidably connected to a mounting base at its front end. The cargo platform is mounted on the front end of the mounting base. A groove is provided at the front end of the column. An anti-fall mechanism is provided between the mounting base and the groove. The anti-fall mechanism includes several positioning blocks fixedly installed on both sides of the groove and a fixed box installed at the rear end of the mounting base. Through slots are provided on both sides of the fixed box. A positioning rod and a drive assembly for driving the positioning rod to rotate are installed inside the fixed box. The positioning rod is rotatably installed inside the fixed box through a positioning shaft, and one end of the rod passes through the through slot and cooperates with the positioning block.

[0008] Furthermore, the bottom of the support plate is fixedly connected to a sliding seat that is slidably connected to the ground rail, and a control cabinet is installed on the top of the support plate on one side of the column.

[0009] Furthermore, the walking mechanism includes a reduction motor mounted on a support plate, a gear mounted on the output shaft of the reduction motor, and a rack meshing with the gear mounted on the side of one of the positioning columns.

[0010] Furthermore, slide rails are symmetrically installed on both sides of the column, and sliders that are slidably connected to the slide rails are installed on the inner sides of both ends of the mounting base.

[0011] Furthermore, the lifting mechanism includes an electric winch installed at the lower rear end of the column, and multiple pulleys are installed on the top of the column. The wire rope on the electric winch passes around the multiple pulleys and is connected to the mounting base.

[0012] Furthermore, the drive assembly includes a crossbar installed inside the fixed box, two movable blocks symmetrically slidably connected to the outside of the crossbar, a movable seat installed on the top of the movable block, a spring connected between the side and the inner wall of the fixed box, the end of the positioning rod slidably connected to the movable seat, an electromagnet installed inside the fixed box between the two movable seats, an iron block embedded in the end of the movable seat near the electromagnet, and a battery, controller and speed sensor installed at the bottom of the fixed box.

[0013] Furthermore, the movable seat has a cavity for accommodating the end of the positioning rod, and the cavity has sliding grooves on both sides. The sliding grooves include a horizontal part and an inclined part, and the horizontal part is located at the upper end of the cavity. The end of the positioning rod is fixedly connected to a limiting post, and the two ends of the limiting post extend into the two sliding grooves.

[0014] Furthermore, two protrusions are symmetrically fixed to the surface of the crossbar, and the movable block is provided with a slot that matches the protrusions.

[0015] Furthermore, a second spring is connected between one end of the positioning rod inside the fixed box and the top surface inside the fixed box; when the platform is running normally, the electromagnet is energized, the two movable seats are in contact with the electromagnet, the first and second springs are in a stretched state, the positioning rod is in an inclined state, and the limiting post is located in the inclined part of the slide groove; when the platform falls, the electromagnet is de-energized, the movable seats move under the action of the first and second springs, the positioning rod rotates to a horizontal state, and the limiting post slides to the horizontal part of the slide groove.

[0016] The advantages of this invention compared to existing technologies are as follows:

[0017] 1. It adopts mechanical triggering and braking, which has a fast response speed and high reliability. It can effectively brake the cargo platform at the moment of stall, preventing falling accidents.

[0018] 2. The anti-fall mechanism is integrated into the groove at the front end of the column and the fixing box at the rear of the mounting base, without taking up extra space, making it very suitable for lightweight single-column stacker cranes.

[0019] 3. Through spring drive and ingenious slide design, the linear motion of the movable seat is transformed into the smooth rotation of the positioning rod, resulting in less impact and avoiding equipment damage caused by rigid impact. Attached Figure Description

[0020] Figure 1 This is a three-dimensional representation of the present invention. Figure 1 .

[0021] Figure 2 This is a three-dimensional representation of the present invention. Figure 2 .

[0022] Figure 3 This is a schematic diagram of the connection structure of the fixing box of this utility model.

[0023] Figure 4 This is a schematic diagram of the internal structure of the fixing box of this utility model.

[0024] Figure 5 This is a cross-sectional view of the movable seat of this utility model.

[0025] Figure 6 This is a structural diagram of the positioning rod of this utility model.

[0026] As shown in the figure: 1. Ground rail; 2. Column; 3. Cargo platform; 4. Positioning column; 5. Support plate; 6. Mounting base; 7. Positioning block; 8. Fixing box; 9. Positioning rod; 10. Slide seat; 11. Control cabinet; 12. Gear motor; 13. Gear; 14. Rack; 15. Slide rail; 16. Slider; 17. Electric winch; 18. Pulley; 19. Crossbar; 20. Movable block; 21. Movable seat; 22. Spring 1; 23. Electromagnet; 24. Iron block; 25. Battery; 26. Controller; 27. Speed ​​sensor; 28. Limiting column; 29. ​​Spring 2. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1 and Figure 2As shown, the present invention provides a single-column lightweight stacker crane, the main structure of which includes two parallel ground rails 1 laid on the ground, the bottom of each rail 1 being fixedly mounted on a positioning column 4. A support plate 5 is slidably connected to the ground rails 1 via a sliding seat 10 fixed at its bottom. A column 2 is fixedly mounted to the top surface of the support plate 5 by welding. On the top surface of the support plate 5 and on one side of the column 2, a control cabinet 11 integrating an electrical control system is installed.

[0029] The stacker crane's walking function is achieved by a walking mechanism. This walking mechanism includes a reduction motor 12 fixedly mounted on the support plate 5. The output shaft of the reduction motor 12 is vertically downward and is equipped with a gear 13. Correspondingly, a rack 14 is installed on the side of one of the positioning columns 4, which meshes with the gear 13. When the reduction motor 12 is working, it drives the gear 13 to rotate. The gear 13 meshes with the stationary rack 14, thereby driving the entire support plate 5 and its columns 2 and other components to move in a straight line along the ground track 1.

[0030] The column 2, as the core component supporting the lifting motion, has a vertical groove on its front end. Slide rails 15, serving as lifting guide elements, are symmetrically installed on both sides of the column 2. A mounting base 6 forms a sliding pair with the slide rails 15 through sliders 16 installed on the inner sides of its two ends, allowing the mounting base 6 to move smoothly up and down along the front end of the column 2. A loading platform 3 is fixedly installed at the front end of the mounting base 6 to directly support goods.

[0031] The lifting of the loading platform 3 is driven by a lifting mechanism, which includes an electric winch 17 installed at the lower rear end of the column 2. Multiple guide pulleys 18 are installed at the top of the column 2. The steel wire rope wound on the electric winch 17 extends upwards, passes sequentially around the pulleys 18 at the top of the column 2, and finally connects downwards and is fixed to the upper part of the mounting base 6. By controlling the forward and reverse rotation of the electric winch 17 to wind up and down the steel wire rope, the mounting base 6 and the loading platform 3 can be driven to rise or fall along the slide rail 15.

[0032] like Figure 1 and Figure 3 As shown, a fall arrestor is installed between the column 2 and the mounting base 6. This mechanism is used to quickly brake and lock the loading platform 3 in case the lifting mechanism fails (such as the wire rope breaks) and causes it to fall out of control, thus ensuring safety.

[0033] The fall arrestor mainly consists of a fixed part and a movable part. The fixed part includes positioning blocks 7 fixed to both sides of the inner part of the groove, with several positioning blocks 7 evenly spaced from top to bottom. The movable part includes a fixing box 8 fixedly installed at the rear end of the mounting base 6.

[0034] like Figures 4 to 6As shown, the interior of the fixing box 8 is a hollow structure with through slots on both side walls. Two positioning rods 9 are rotatably connected to the interior of the fixing box 8 via positioning shafts, allowing the positioning rods 9 to rotate with the positioning shafts as fulcrums. One end (outer end) of the positioning rod 9 extends out of the box through the through slots to engage with the positioning block 7; the other end (inner end) is connected to the inner top wall of the fixing box 8 via a spring 29.

[0035] The drive assembly of the fall arrestor is integrated inside the mounting box 8 and is used to control the state switching of the positioning rod 9. This drive assembly includes:

[0036] Crossbar 19: It is fixedly installed in the inner cavity of the fixed box 8, and its surface is symmetrically provided with two protruding strips;

[0037] Movable block 20: Two movable blocks 20 are symmetrically fitted on the crossbar 19 and can slide along the crossbar 19. The movable blocks 20 are provided with slots that are adapted to the protrusions.

[0038] Movable seat 21: A movable seat 21 is fixedly installed on the top of each movable block 20;

[0039] Spring 22: A spring 22 is connected between the side of each movable block 20 and the inner wall of the corresponding side of the fixed box 8;

[0040] Electromagnet 23: It is fixedly installed inside the fixed box 8 and located between the two movable seats 21;

[0041] Iron block 24: Embedded and installed at one end of each movable seat 21 near the electromagnet 23;

[0042] Triggering and control system: including battery 25, controller 26 and speed sensor 27 installed at the bottom of fixed box 8; speed sensor 27 is used to monitor the descent speed of loading platform 3 in real time.

[0043] The power transmission between the drive assembly and the positioning rod 9 is achieved through a unique linkage-slide mechanism. Specifically, a cavity is provided on each movable seat 21 to accommodate the inner end of the positioning rod 9. A special slide is provided on both sides of the cavity. This slide consists of a horizontal section and an inclined section connected to the horizontal section and inclined downward. A limiting post 28 is fixedly provided at the inner end of the positioning rod 9. The two ends of the limiting post 28 extend into the slides on both sides of the movable seat 21. Through the movement of the limiting post 28 in the slide, the horizontal linear movement of the movable seat 21 is converted into the rotation of the positioning rod 9.

[0044] The working process of this fall protection mechanism is as follows:

[0045] Normal operating state: After the system is powered on, the electromagnet 23 is energized by the controller 26, generating a strong magnetism that attracts the iron blocks 24 on the two movable seats 21. This causes the two movable seats 21 to overcome the tension of their respective side springs 22 and move towards the center until they are tightly against both sides of the electromagnet 23. During this process, the movable seats 21 apply a downward force to the inner end of the positioning rod 9 through the limiting post 28, while the second spring 29 is stretched. At this time, the limiting post 28 is located at the lowest point of the inclined section of the slide, and the overall posture of the positioning rod 9 is tilted, with its outer end away from the positioning block 7 on the column 2. Therefore, it will not hinder the normal lifting and lowering operation of the loading platform 3.

[0046] Fall Braking State: When a fault such as wire rope breakage occurs, the loading platform 3 and the mounting base 6 accelerate to fall. When the speed sensor 27 in the fixed box 8 detects in real time that the falling speed exceeds the preset safety threshold, it immediately sends a signal to the controller 26. The controller 26 instantly cuts off the power supply to the electromagnet 23, the electromagnet 23 loses its magnetism, and the attraction force on the movable base 21 immediately disappears. At this time, the compressed spring 1 22 quickly releases its elastic potential energy, pulling the movable block 20 and the movable base 21 to move outward. At the same time, the stretched spring 29 also begins to contract, pulling the inner end of the positioning rod 9 upward. Under the synergistic action of the two springs (22, 29), the movable base 21 moves outward, while the positioning rod 9 rotates rapidly around the positioning axis in its middle under the combined drive of the tension of the spring 29 and the upward sliding of the limiting post 28 along the inclined part of the slide groove. In a very short time, the positioning rod 9 rotates from an inclined state to a horizontal state. At this time, the limiting post 28 also slides from the inclined part into the horizontal part. The outer end of the horizontally extended positioning rod 9 quickly rotates to a horizontal state. During the descent, the two positioning rods 9 are not firmly locked by the positioning blocks 7 on both sides. Since the positioning blocks 7 are fixedly installed on the column 2, the kinetic energy of the fall is absorbed instantly, realizing reliable braking of the loading platform 3 and preventing it from falling further.

[0047] After troubleshooting, simply power on the system again; the electromagnet 23 will then engage the movable seat 21 again, resetting the drive assembly and positioning rod 9 to their original positions. Figure 4 Once the operating status shown is displayed, the equipment can resume normal operation.

[0048] The parts not disclosed in this utility model are all existing technologies. If a ceiling track can be added according to actual needs, its specific structure and working principle will not be described in detail.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

[0051] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A single-column lightweight stacker crane, comprising two ground rails (1), a column (2) disposed on the ground rails (1), a loading platform (3) disposed on the column (2) and capable of being raised and lowered, a lifting mechanism for driving the loading platform (3) to rise and fall, and a traveling mechanism for driving the column (2) to travel along the ground rails (1), characterized in that: The two ground rails (1) are set in parallel, and a positioning column (4) is fixed to their bottom and a support plate (5) is slidably connected to their top. The column (2) is installed on the top of the support plate (5). The front end of the column (2) is slidably connected to the mounting base (6), the cargo platform (3) is installed at the front end of the mounting base (6), the front end of the column (2) has a groove, and the mounting base (6) and the groove are provided with an anti-fall mechanism. The anti-fall mechanism includes several positioning blocks (7) fixedly installed on both sides of the groove and a fixed box (8) installed at the rear end of the mounting base (6). The fixed box (8) has through slots on both sides, and a positioning rod (9) and a drive assembly for driving the positioning rod (9) to rotate are installed inside. The positioning rod (9) is rotatably installed inside the fixed box (8) through a positioning shaft, and one end of it passes through the through slot and cooperates with the positioning block (7).

2. The single-column lightweight stacker crane according to claim 1, characterized in that: The bottom of the support plate (5) is fixedly connected to a slide block (10) that is slidably connected to the ground rail (1), and a control cabinet (11) is installed on the top of the column (2) on one side.

3. The single-column lightweight stacker crane according to claim 1, characterized in that: The walking mechanism includes a geared motor (12) mounted on a support plate (5), a gear (13) mounted on the output shaft of the geared motor (12), and a rack (14) meshing with the gear (13) mounted on the side of a positioning column (4).

4. A single-column lightweight stacker crane according to claim 1, characterized in that: The column (2) is symmetrically equipped with slide rails (15) on both sides, and the mounting base (6) is equipped with sliders (16) that are slidably connected to the slide rails (15) on the inner sides of both ends.

5. A single-column lightweight stacker crane according to claim 1, characterized in that: The lifting mechanism includes an electric winch (17) installed at the lower rear end of the column (2). Multiple pulleys (18) are installed on the top of the column (2). The wire rope on the electric winch (17) passes around the multiple pulleys and is connected to the mounting base (6).

6. A single-column lightweight stacker crane according to claim 1, characterized in that: The drive assembly includes a crossbar (19) installed inside the fixed box (8), two movable blocks (20) symmetrically slidably connected to the outside of the crossbar (19), a movable seat (21) installed on the top of the movable block (20), and a spring (22) connected between the side and the inner wall of the fixed box (8). The end of the positioning rod (9) is slidably connected to the movable seat (21). An electromagnet (23) is installed inside the fixed box (8) between the two movable seats (21). An iron block (24) is embedded in the end of the movable seat (21) near the electromagnet (23). A battery (25), a controller (26) and a speed sensor (27) are installed at the bottom inside the fixed box (8).

7. A single-column lightweight stacker crane according to claim 6, characterized in that: The movable seat (21) has a cavity for accommodating the end of the positioning rod (9). The cavity has grooves on both sides, and the grooves include a horizontal part and an inclined part. The horizontal part is located at the upper end of the cavity. The end of the positioning rod (9) is fixedly connected to a limiting post (28), and the two ends of the limiting post (28) extend into the two grooves.

8. A single-column lightweight stacker crane according to claim 7, characterized in that: The positioning rod (9) is connected to a spring (29) between one end inside the fixed box (8) and the top surface inside the fixed box (8).

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