Double-stand-column stacking machine for intelligent storage and transportation system

Abstract

The invention relates to the related technical field of storage stacking, discloses a double-stand-column stacking machine for an intelligent storage and transportation system, and aims to solve the key problems that a cargo carrying table falls down due to overlarge stress in the feeding and discharging periods, and cargoes slip off in the carrying process. When the motor drives the lead screw to rotate forwards and backwards, the goods clamps are relatively close to or away from each other. When the two goods clamps are relatively close to each other, goods placed on the goods carrying table can be stably clamped, and it is guaranteed that in the up-down conveying process of the goods, the goods can vertically and stably move up and down; when the two goods clamps are relatively far away to the limit, the anti-falling rods installed on the goods clamps can be inserted into the limiting grooves to limit the goods carrying table to move up and down, so that the goods carrying table can stably hover at the height, and finally the purposes of goods clamping and transporting and hovering and limiting in place of the goods carrying table are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field related to warehousing and stacking, and in particular to a double-column stacker for an intelligent storage and transportation system. Background Art

[0002] The dual-column stacker crane, a core component of the intelligent storage and transportation system, is a core component of automated high-bay warehouses. Its rigid frame, constructed from dual parallel columns and high-strength crossbeams, offers high payload, high precision, and long-travel capabilities, enabling high-speed storage and retrieval of goods. Widely used in high-density warehousing scenarios such as e-commerce logistics and automotive manufacturing, it significantly improves space utilization and operational efficiency.

[0003] In practice, when a loading platform handles cargo at a certain height, it currently relies primarily on wire ropes to stabilize the platform. However, this method has significant drawbacks: once cargo is placed on the loading platform, if the platform's load increases suddenly, the tension on the wire ropes will also increase dramatically. When the tension exceeds the wire rope's limit, the wire rope will break, causing the loading platform to lose its support and plummet under the influence of gravity. This sudden fall not only causes serious damage to the stacker crane itself, but can also cause safety accidents and threaten the lives of surrounding personnel.

[0004] Furthermore, the current method of cargo handling involves placing goods directly on a loading platform for transport, without effective restraints. During transport, if there is vibration, shaking, or sudden stops, the goods can easily slip due to inertia. Slipping goods not only damage the goods themselves, affecting their value and sales price, but can also strike surrounding equipment, causing failure or damage, further increasing maintenance costs and downtime for businesses, and negatively impacting normal production operations. Summary of the Invention

[0005] The present invention proposes a double-column stacker for an intelligent storage and transportation system, which utilizes the advantages of the cargo platform having a clamping function during cargo handling and the ability to achieve limited hovering during loading and unloading operations. It aims to effectively solve the key problems mentioned in the above background technology, such as the cargo platform falling due to excessive force during loading and unloading, and slipping during cargo handling.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a double-column stacker for an intelligent storage and transportation system, comprising: a walking mechanism, on the surface of which main columns and auxiliary columns are symmetrically arranged to vertically guide and limit the cargo platform; a lifting mechanism is fastened to the side of the main column, and a steel wire rope provided at the output end of the lifting mechanism can pull the cargo platform up and down; cargo clamps are symmetrically and movably installed on the surface of the cargo platform, and the two cargo clamps are position-adjusted by a lead screw driven by a motor to achieve relative distance / approach of the cargo clamps; an anti-drop rod is threadedly connected to one side of the cargo clamp, and a limiting groove cooperating therewith is provided on the side of the auxiliary column; when the cargo clamps are relatively close, the cargo on the cargo platform is clamped; when the cargo clamps are relatively far away, the anti-drop rod is inserted into the limiting groove to achieve the hovering of the cargo platform.

[0007] Furthermore, the limiting groove is a rectangular groove.

[0008] Furthermore, an adjustment support is movably installed on the inner side of the main column, and an external tooth is provided on the side of the adjustment support. A limited wheel is fixedly installed on the side of the cargo platform, and a limited cylinder assembly that cooperates with the adjustment support is movably installed on the outer side of the main column.

[0009] Furthermore, the outer teeth are shaped like an isosceles triangle.

[0010] Furthermore, the limit cylinder assembly includes: a cylinder shell, fixed to the outside of the main column; a piston rod of a movable sealing set inside the cylinder shell is fixedly connected to the side of the adjustment support; an oil pot, fixed to the outside of the main column, filled with hydraulic oil, and the cylinder shell and the oil pot are connected by an oil drain pipe and an oil suction pipe, and a one-way valve is provided in the oil suction pipe.

[0011] Furthermore, a driving inclined portion located on the side of the outer teeth is opened on the outer side of the adjustment support, and a driving push rod pushed by a push spring is movably installed on the side of the cargo clamp.

[0012] Furthermore, a reversing wheel frame for reversing the wire rope is movably installed on the top of the main column, a detection wheel is movably installed on the bottom of the reversing wheel frame, and an overload protection seat pushed by an overload spring is movably installed on the top of the main column.

[0013] Furthermore, the side surface of the overload protection seat is in the shape of a right triangle.

[0014] Furthermore, a detection seat is installed on the top of the adjustment support through bolt tightening, and a local inclined surface is set on the top of the detection seat. A retaining ring is movably installed on the inner side of the limit cylinder assembly, and the retaining ring and the piston rod are movably connected by a connecting rod.

[0015] The present invention has the following beneficial effects: The present invention provides a dual-column stacker for intelligent storage and transportation systems. A pair of cargo clamps are mounted on a cargo platform and driven by a screw. Specifically, a motor, serving as the power source, is tightly coupled to the screw. When the motor is started and rotated forward and reverse, it drives the screw to rotate synchronously. Due to the threaded transmission between the screw and the cargo clamps, the forward and reverse rotation of the screw causes the cargo clamps to move relative to each other in a predetermined direction, thereby enabling the cargo clamps to move closer or further apart.

[0016] When the motor drives the lead screw, bringing the two clamps closer together, the clamps gradually tighten from both sides of the cargo, creating a secure grip on the cargo on the platform. This secure grip effectively prevents cargo from swaying or shifting during transport, ensuring it maintains a stable, vertical upward motion. This improves the safety and accuracy of cargo transportation and reduces the risk of collision and damage caused by swaying cargo.

[0017] When the motor rotates in the opposite direction and drives the two cargo clamps to move away from each other until they reach the limit position, an anti-drop bar is pre-installed on the cargo clamps. When the cargo clamps move away to the limit, the anti-drop bar will be inserted into the limit slot, and the cargo platform can hover stably at the height position. This design plays a key role during the loading and unloading of the cargo platform. It can effectively prevent the cargo platform from accidentally falling due to excessive load or external interference. In actual applications, when the stacker transports goods to the designated cargo location for loading, or removes goods from the cargo location for unloading, the cargo platform needs to remain stable to ensure smooth operation. The combination of the anti-drop bar and the limit slot provides reliable protection for the entire loading and unloading process.

[0018] To sum up, the double-column stacker provided by the present invention achieves the dual purposes of cargo clamping and transportation and cargo platform hovering and limiting in place through the relative movement of the cargo clamp on the cargo platform and the limiting function of the anti-drop rod, providing strong support for the efficient and safe operation of the intelligent storage and transportation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0020] The present invention can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of the overall external three-dimensional structure of the present invention; Figure 2 A schematic diagram of the position and three-dimensional structure between the bottom of the cargo platform and the auxiliary columns in the present invention; Figure 3 A schematic diagram of the position between the top of the cargo platform and the main pillars and their three-dimensional structure in the present invention; Figure 4 For the present invention Figure 3 The enlarged structural diagram of the E position in the middle; Figure 5 A schematic diagram of the present invention showing the adjustment of the positions of the components on the support and a partial three-dimensional enlarged structure thereof; Figure 6 It is a schematic diagram of the position and three-dimensional structure between the bottom of the cargo platform and the adjustment support in the present invention.

[0021] In the figure: 1. Traveling mechanism; 101. Main column; 102. Auxiliary column; 103. Limiting groove; 2. Cargo platform; 201. Cargo clamp; 202. Anti-drop rod; 203. Screw rod; 204. Motor; 205. Driving push rod; 206. Push spring; 207. Limiting wheel; 3. Lifting mechanism; 300. Wire rope; 4. Adjusting support; 401. External gear; 402. Driving bevel; 5. Reversing wheel frame; 501. Detection wheel; 6. Limiting cylinder assembly; 600. Cylinder shell; 601. Piston rod; 602. Retaining ring; 603. Oil pot; 604. Oil drain pipe; 605. Oil suction pipe; 7. Detection seat; 8. Overload protection seat; 801. Overload spring. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] For example 1, please refer to Figure 1 It can be seen that the walking mechanism 1 serves as the support of the entire main body and can move along a specific track. The main column 101 and the auxiliary column 102 are symmetrically fastened to the surface of the walking mechanism 1, and the tops of the main column 101 and the auxiliary column 102 are connected by a crossbeam, thereby ensuring that the frame formed by the main column 101 and the auxiliary column 102 is relatively stable. A cargo platform 2 is movably installed on the main column 101 and the auxiliary column 102. Correspondingly, a lifting mechanism 3 is fastened to the side of the main column 101, and the output end of the lifting mechanism 3 is connected to the cargo platform 2 by a wire rope 300. The lifting mechanism 3 serves as the driving core for vertical movement. It mainly adopts an AC variable frequency motor with a planetary gear reducer to work, and uses the rope drum on the output end of the reducer to connect with the wire rope 300, thereby realizing the winding and releasing of the wire rope 300. In actual application, the steel wire rope 300 can be wound and released by controlling the lifting mechanism 3, thereby realizing the lifting and lowering of the cargo platform 2.

[0024] Combine Figure 1 and Figure 2 As can be clearly seen, cargo clamps 201 are symmetrically mounted on the surface of the loading platform 2, and a screw 203, threadedly connected to the cargo clamps 201, is movably mounted on the bottom of the loading platform 2. The screw 203 has two threaded sections, each threadedly connected to a corresponding cargo clamp 201. A motor 204 is fixedly mounted on the bottom of the loading platform 2, and the output end of the motor 204 is fixedly connected to the screw 203. By controlling the forward and reverse rotation of the motor 204, the cargo clamps 201 can be forced to move closer or further apart. Specifically, during the loading process, the motor 204 rotates in the reverse direction, forcing the two cargo clamps 201 to move away from each other, increasing the distance between them and facilitating the placement of cargo on the surface of the loading platform 2. Once the cargo is placed, the motor 204 drives the screw 203 to rotate in the forward direction, forcing the two cargo clamps 201 closer together and securing the cargo. This ensures that the cargo, held by the cargo clamps 201, will not slip as it is transported up and down the loading platform 2.

[0025] On this basis, from Figure 2 It can be clearly seen that a drop prevention bar 202 is threadedly connected to one side of the cargo clamp 201. Correspondingly, a plurality of limit slots 103 are equidistantly provided on the side of the secondary column 102, and the limit slots 103 correspond to the height of each shelf. When the cargo platform 2 transports the goods to the corresponding height, the motor 204 rotates in the opposite direction, causing the cargo clamp 201 to move relatively away. At the same time, the cargo clamp 201 pushes the drop prevention bar 202 toward the limit slot 103 until the drop prevention bar 202 is inserted into the limit slot 103. The drop prevention bar 202 is then extended, thereby preventing the cargo platform 2 from accidentally descending during the loading and unloading process. This ensures that the cargo platform 2 can be stably suspended during the loading and unloading process. Moreover, since the limit slot 103 is a rectangular slot, this ensures that the drop prevention bar 202 is more easily inserted into the limit slot 103, ensuring that the two can cooperate more quickly and stably.

[0026] The second embodiment is a further improvement on the first embodiment. Figure 3 、 Figure 5 and Figure 6 It can be seen that the inner side of the main column 101 is equipped with an adjustment support 4 guided by a round rod, and the side of the adjustment support 4 is provided with equidistantly arranged external teeth 401, which are in the shape of an isosceles triangle. Correspondingly, a limited wheel 207 is fixedly installed on the side of the cargo platform 2. When the cargo platform 2 drives the limited wheel 207 to move up and down, the limited wheel 207 has a tendency to push the external teeth 401 when passing through the external teeth 401 using the inclined surface. In addition, a limited cylinder assembly 6 is movably installed on the outer side of the main column 101 to cooperate with the adjustment support 4. Figure 5As can be seen in the figure, the limit cylinder assembly 6 includes a cylinder housing 600 fixed to the outside of the main column 101 through a bracket, and the piston rod 601 of the sealed movable set inside the cylinder housing 600 is relatively fixed to the side of the adjustment support 4 by a connecting block, ensuring that when the adjustment support 4 moves left and right, it can simultaneously drive the piston rod 601 to move left and right in the inner cavity of the cylinder housing 600. Generally speaking, the inner cavity of the cylinder housing 600 will be injected with a sufficient amount of hydraulic oil, such as Figure 5 As shown, an oil pot 603 is fixedly mounted on the outside of the main column 101, located below the oil cylinder housing 600. A sufficient amount of hydraulic oil is placed in the oil pot 603. The oil cylinder housing 600 and the oil pot 603 are connected by an oil drain pipe 604 and an oil suction pipe 605. A one-way valve is provided in the oil suction pipe 605, thereby enabling a one-way flow of hydraulic oil from the oil pot 603 into the oil cylinder housing 600. When the piston rod 601 squeezes the hydraulic oil in the oil cylinder housing 600, the lubricating oil in the oil cylinder housing 600 can only flow back into the oil pot 603 through the oil drain pipe 604. At this time, by controlling the diameter of the oil drain pipe 604, the speed of the piston rod 601 during its return movement can be limited. For example, when the cargo platform 2 moves up or down too fast, the limiting wheel 207 pushes the outer teeth 401 to drive the adjustment support 4 to move, which will cause the adjustment support 4 to drive the piston rod 601 to squeeze the hydraulic oil in the cylinder shell 600. Since the movement speed of the adjustment support 4 is relatively fast, the lubricating oil in the cylinder shell 600 cannot quickly flow back to the oil pot 603 through the oil drain pipe 604, thereby limiting the movement of the adjustment support 4, and then limiting the movement speed of the limiting wheel 207 and the cargo platform 2 that cooperate with the outer teeth 401.

[0027] On this basis, combined with Figure 6 It can be clearly seen that the outer side of the adjustment support 4 is provided with a driving inclined portion 402 located on the side of the outer tooth 401. Correspondingly, a driving push rod 205 pushed by a push spring 206 is movably installed on the side of the cargo clamp 201. The shape of the driving push rod 205 is "T" shaped, as shown in FIG. Figure 6 As shown, when the two cargo clamps 201 are completely close to each other, it means that there is no cargo clamped on the cargo platform 2. At this time, the cargo clamps 201 drive the driving rod 205 to compress the push spring 206, forcing the driving rod 205 to move relatively away from the driving inclined portion 402. Afterwards, when the cargo platform 2 moves up and down, the limiting wheel 207 will push the outer teeth 401 to move away from the limiting wheel 207. Figure 5 As shown, after the adjustment support 4 pushes the piston rod 601 to squeeze the cylinder shell 600, since there is no power element in the cylinder shell 600 to restore the piston rod 601, the outer teeth 401 do not limit the movement speed of the cargo platform 2 during the up and down movement of the limiting wheel 207, which ensures that the up and down movement speed of the cargo platform 2 is no longer limited when the cargo platform 2 is running without load.

[0028] Similarly, if there is cargo placed on the cargo platform 2, when the cargo clamps 201 clamp the cargo, the distance between the cargo clamps 201 will be relatively larger than the above-mentioned distance, which causes the driving push rod 205 to be pushed by the elastic force of the push spring 206 and press against the driving inclined portion 402. The inclined surface of the driving inclined portion 402 forces the outer teeth 401 to always have a tendency to move toward the direction of the limiting wheel 207, that is, the recovery of the adjustment support 4 is used to drive the synchronous recovery of the piston rod 601, to ensure that the limiting wheel 207 will always be in contact with the outer teeth 401 during the up and down movement, and the outer teeth 401 is used to push the adjustment support 4 to move, and at the same time, the piston rod 601 is moved in the cylinder shell 600, thereby limiting the actual up and down movement speed of the cargo platform 2, thereby preventing the cargo platform 2 from moving up and down too fast during the loading process.

[0029] The third embodiment is a further improvement on the basis of the second embodiment. The third embodiment can be implemented alone or used in conjunction with the second embodiment. Figure 3-Figure 5 It can be seen that a reversing wheel frame 5 for reversing the wire rope 300 is movably mounted on the top of the main column 101, and the reversing wheel frame 5 can move up and down along the top of the main column 101. Under normal circumstances, the wire rope 300 pulls downward, forcing the reversing wheel frame 5 to move downward. A detection wheel 501 is movably mounted on the bottom of the reversing wheel frame 5. Correspondingly, an overload protection seat 8 is movably mounted on the top of the main column 101, which is pushed by an overload spring 801. The side profile of the overload protection seat 8 is a right triangle. When the reversing wheel frame 5 is pulled by the wire rope 300 and drives the detection wheel 501 downward, the detection wheel 501 will hit the inclined surface. As the downward pressure of the detection wheel 501 increases, the detection wheel 501 will further squeeze the inclined surface of the overload protection seat 8, forcing the overload protection seat 8 to compress the overload spring 801. Because there are multiple overload springs 801 and their high elastic coefficients, they have sufficient strength to push the overload protection seat 8 into motion. This allows the elastic force of the overload springs 801 to detect whether the wire rope 300 is overloaded. This ensures that when the wire rope 300 is properly stressed, the detection wheel 501 always rests against the inclined surface of the overload protection seat 8. When the wire rope 300 is overloaded, the downward pressure of the detection wheel 501 increases, pushing the inclined surface of the overload protection seat 8 to compress the overload springs 801 until the detection wheel 501 descends and rests against the straight portion at the bottom of the overload protection seat 8.

[0030] On this basis, through Figure 5It can be seen that the top of the adjustment support 4 is equipped with a detection seat 7 fastened with bolts, and a local inclined surface is set on the top of the detection seat 7. The angle of the inclined surface corresponds to the overload protection seat 8. Under normal conditions, the inclined surfaces of the detection seat 7 and the overload protection seat 8 both touch the detection wheel 501. Therefore, the detection wheel 501 restricts the detection seat 7 and prevents the adjustment support 4 from excessively moving to the left. At the same time, a retaining ring 602 is installed on the inner side of the limit cylinder assembly 6, and the retaining ring 602 and the piston rod 601 are movably connected by a connecting rod. Figure 5 As shown, when piston rod 601 moves to the right, since retaining ring 602 has already moved to the right limit, the connecting rod on retaining ring 602 will move relative to the right piston rod 601. Similarly, when piston rod 601 moves to the left and reaches the end of the connecting rod, it will pull retaining ring 602 along the connecting rod, ultimately causing retaining ring 602 to block the oil drain pipe 604. The limit cylinder assembly 6 is also equipped with an oil drain assembly. After retaining ring 602 blocks the oil drain pipe 604, manual adjustment of the oil drain assembly can release the lubricating oil in the cylinder housing 600.

[0031] In actual application, during the normal transportation of goods, the steel wire rope 300 pulls the reversing wheel frame 5 to press it downward, and makes the detection wheel 501 rest against the inclined surface of the overload protection seat 8 and the detection seat 7. Since the detection wheel 501 at this time can limit the left movement of the detection seat 7, the piston rod 601 will not move excessively to the left during the normal transportation of the equipment and drive the retaining ring 602 to block the oil drain pipe 604. Afterwards, the steel wire rope 300 is used to pull the cargo platform 2 up and down to complete the transportation of the goods on the cargo platform 2. During transportation, the clamping and tightening between the cargo clamps 201 and the hovering limit of the anti-drop rod 202 inserted into the limit groove 103 are consistent with the contents of the above embodiment 2 and will not be repeated here.

[0032] When the cargo on the cargo platform 2 is overloaded, the downward force of the reversing wheel frame 5 increases, thereby pushing the overload protection seat 8 toward the overload spring 801 according to the inclined surface and squeezing the overload spring 801. At the same time, the descending detection wheel 501 synchronously squeezes the inclined surface of the detection seat 7. When the detection wheel 501 descends and passes over the inclined surface of the detection seat 7, the detection wheel 501 will no longer restrict the movement of the detection seat 7. Afterwards, when the limiting wheel 207 passes over the outer teeth 401, the driving push rod 205, which is subjected to the elastic force of the push spring 206, reaches the driving inclined portion 402, forcing the driving inclined portion 402 to push the adjustment support 4 further toward the limiting wheel 207. During this process, the adjustment support 4 will drive the piston rod 601 to move further away from the retaining ring 602. After the piston rod 601 reaches the connecting rod end of the retaining ring 602, it pulls the retaining ring 602 to the left according to the connecting rod and blocks the oil drain pipe 604. During this process, as the piston rod 601 moves to the left, the oil suction pipe 605 continues to suck the hydraulic oil in the oil pot 603, and keeps the hydraulic oil in the cylinder shell 600 filled. Afterwards, as the cargo platform 2 moves further downward, the limiting wheel 207 will hit the inclined surface of the outer tooth 401, but when the adjustment support 4 moves away from the limiting wheel 207, the adjustment support 4 will squeeze the hydraulic oil in the inner cavity of the cylinder shell 600 through the piston rod 601. However, at this time, there is no channel for circulation between the cylinder shell 600 and the oil pot 603. Therefore, due to the action of the incompressible hydraulic oil, the adjustment support 4 is forced to be unable to move away from the limiting wheel 207, thereby achieving the movement locking of the limiting wheel 207 and ensuring that the cargo platform 2 hovers at its desired height. The advantage of this design is that, on the one hand, it can prevent the cargo platform 2 from being overloaded, and on the other hand, it can also prevent the cargo platform 2 from being overloaded. Figure 1 and Figure 2 As can be clearly seen in the figure, the limiting groove 103 is a rectangular groove. When the cargo platform 2 hovers at the required height, the cargo clamp 201 is inserted into the inner bottom of the limiting groove 103, ensuring that the cargo platform 2 has sufficient support. When the cargo is loaded, the lifting mechanism 3 only needs to pull the wire rope 300 upward, causing the cargo platform 2 to pull the anti-drop bar 202 upward along the limiting groove 103. During this process, if the cargo platform 2 is overloaded, although the lifting mechanism 3 still tends to pull the cargo platform 2 upward, the detection wheel 501 will also pass over the local inclined surface of the detection seat 7. Afterwards, when the cargo clamps 201 approach each other and clamp the cargo, although the anti-drop bar 202 disengages from the limiting groove 103, the adjustment support 4 is now pushed by the driving push rod 205, causing the adjustment support 4 to move further toward the limiting wheel 207, thereby achieving the above-mentioned blocking of the oil drain pipe 604 by the retaining ring 602. The overloaded cargo platform 2 is unable to move up and down normally. Subsequently, the motor 204 rotates in the reverse direction, so that the anti-drop bar 202 is inserted into the limit slot 103 again, and the limit slot 103 can be used to limit the downward movement of the cargo platform 2, preventing the cargo platform 2 from falling when overloaded.

[0033] Therefore, it can be seen that the use of this method can ensure that after the cargo platform 2 is overloaded, the overloaded cargo platform 2 can be smoothly restored to the corresponding shelf position according to the restrictions between the anti-fall rod 202 and the limit groove 103, so that the overloaded goods can be safely unloaded, thereby avoiding the cargo platform 2 falling due to overloading, and the goods on the cargo platform 2 being lower than the container, resulting in the goods being unable to be returned.

[0034] When the wire rope 300 breaks after being used for a long time, the downward pressure of the reversing wheel frame 5 will be released. At this time, the reversing wheel frame 5 will not restrict the movement of the detection seat 7. When the adjustment support 4 drives the piston rod 601 to move away from the retaining ring 602, the local inclined surface on the detection seat 7 will push the detection wheel 501 to move upward. After that, as the piston rod 601 pulls the retaining ring 602 to block the oil drain pipe 604, the above-mentioned purpose of locking the cargo platform 2 is achieved. This ensures that the equipment can automatically lock after the wire rope 300 breaks, avoiding the problem of a sharp fall.

Claims

1. A double-column stacker for an intelligent storage and transportation system, characterized in that: include: A walking mechanism (1) has a main column (101) and a secondary column (102) symmetrically arranged on its surface for vertically guiding and limiting the cargo platform (2); A lifting mechanism (3) is fastened to the side of the main column (101), and a steel wire rope (300) provided at the output end of the lifting mechanism (3) is capable of pulling the cargo platform (2) to move up and down; Cargo clamps (201) are symmetrically and movably mounted on the surface of the cargo platform (2), and the positions of the two cargo clamps (201) are adjusted by screw rods (203) driven by motors (204), thereby enabling the cargo clamps (201) to move away from or closer to each other; One side of the cargo clamp (201) is threadedly connected to an anti-fall rod (202), and a side portion of the auxiliary column (102) is provided with a limiting groove (103) that cooperates with the anti-fall rod (202); When the cargo clamp (201) is relatively close, the cargo on the cargo platform (2) is clamped; when the cargo clamp (201) is relatively far away, the anti-drop rod (202) is inserted into the limiting groove (103) to achieve the cargo platform (2) hovering.

2. The double-column stacker for intelligent storage and transportation system according to claim 1, characterized in that: The limiting groove (103) is a rectangular groove.

3. The double-column stacker for an intelligent storage and transportation system according to claim 1, characterized in that: An adjustment support (4) is movably mounted on the inner side of the main column (101), and an outer tooth (401) is provided on the side of the adjustment support (4). A limited wheel (207) is fixedly mounted on the side of the cargo platform (2), and a limited oil cylinder assembly (6) that cooperates with the adjustment support (4) is movably mounted on the outer side of the main column (101).

4. The double-column stacker for an intelligent storage and transportation system according to claim 3, characterized in that: The outer teeth (401) are in the shape of an isosceles triangle.

5. The double-column stacker for an intelligent storage and transportation system according to claim 3, characterized in that: The limit cylinder assembly (6) includes: The oil cylinder shell (600) is fixed to the outside of the main column (101); the piston rod (601) of the sealing movable sleeve inside the oil cylinder shell (600) is fixedly connected to the side of the adjustment support (4); The oil pot (603) is fixed on the outside of the main column (101) and is filled with hydraulic oil. The oil cylinder housing (600) and the oil pot (603) are connected by an oil drain pipe (604) and an oil suction pipe (605). A one-way valve is provided in the oil suction pipe (605).

6. The double-column stacker for the intelligent storage and transportation system according to claim 5, characterized in that: The outer side of the adjustment support (4) is provided with a driving inclined portion (402) located on one side of the outer tooth (401), and the side of the cargo clamp (201) is movably provided with a driving push rod (205) pushed by a push spring (206).

7. The double-column stacker for the intelligent storage and transportation system according to claim 6, characterized in that: A reversing wheel frame (5) for reversing the steel wire rope (300) is movably mounted on the top of the main column (101), a detection wheel (501) is movably mounted on the bottom of the reversing wheel frame (5), and an overload protection seat (8) pushed by an overload spring (801) is movably mounted on the top of the main column (101).

8. The double-column stacker for an intelligent storage and transportation system according to claim 7, characterized in that: The side shape of the overload protection seat (8) is a right triangle.

9. The double-column stacker for an intelligent storage and transportation system according to claim 7, characterized in that: A detection seat (7) is provided on the top of the adjustment support (4) and is fastened with bolts. A local inclined surface is provided on the top of the detection seat (7). A retaining ring (602) is movably installed on the inner side of the limit cylinder assembly (6). The retaining ring (602) and the piston rod (601) are movably connected by a connecting rod.

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