Bidirectional Blocking Device for a Lifting Platform of an Automated Warehouse and Blocking Method Thereof

Abstract

The present invention discloses a bidirectional blocking device and a blocking method for a three-dimensional warehouse lifting platform, wherein the device comprises a three-dimensional shelf, a lifting platform, a driving track, and a shuttle, wherein multiple sets of shuttle entry tracks are installed at equal intervals from top to bottom on the three-dimensional shelf, and the lifting platform can be raised and lowered to dock with the shuttle entry tracks of each floor, and in the docked state, the shuttle can travel from the shuttle entry track to the lifting platform, and the shuttle can travel from the lifting platform to the shuttle entry track; wherein an A mounting beam is installed on one side of the lifting platform near the three-dimensional shelf, and a B mounting beam is installed on the lower part of each side of the shuttle entry track near the lifting platform, and an A unit and a B unit are mounted on the A mounting beam, and an A unit and a B unit are mounted on the B mounting beam, and the A unit on the A mounting beam and the B unit on the B mounting beam are coupled to each other, and the A unit on the B mounting beam and the B unit on the A mounting beam are coupled to each other; thereby, when the lifting platform is docked to the shelf track, the bidirectional position limit can be automatically released.

Description

Technology Field

[0001] The present invention belongs to the field of smart warehouse storage technology, and more specifically, relates to a bidirectional blocking device for a three-dimensional warehouse lifting platform and a blocking method thereof. Background Technology

[0003] Conventional three-dimensional warehouse lifting platforms often rely on complex sensor systems to prevent shuttles from falling when docking to shelf tracks. This involves placing sensor arrays in the track docking area to monitor the shuttle's position in real time and trigger a braking mechanism via electrical signals. However, sensors are susceptible to environmental interference, leading to accidental triggers or response delays. Particularly during high-frequency track changes, signal transmission delays in the sensor system cause position-limiting actions to fail to synchronize with the shuttle's movement, thus failing to meet the real-time requirements of high-speed warehouse storage. Furthermore, the lack of physical redundancy protection in the event of sensor failure means that sensors cannot form an effective physical barrier when there is a height difference between the platform and the shelf track, posing a risk of falling. Additionally, since a large number of sensor groups must be deployed on multi-layer tracks, wiring is complex and maintenance costs are high. The problem to be solved

[0005] To overcome the disadvantages of conventional technology, the present invention provides a bidirectional blocking device and a blocking method for a three-dimensional warehouse lifting platform, which can solve the problem of slow response and complex maintenance of existing devices by automatically releasing a bidirectional positioning restriction when the lifting platform is docked to a shelf track; automatically forming a physical block in the docked state; and ensuring that the shuttle always maintains single-sided protection during the platform lifting process, and by establishing a bidirectional interlocking mechanism without external power. means of solving the problem

[0007] To solve the aforementioned problem, the bidirectional blocking device for a three-dimensional warehouse lifting platform and the blocking method thereof according to the present invention comprises a three-dimensional shelf, a lifting platform, a travel track, and a shuttle, wherein a plurality of sets of shuttle entry tracks are installed at equal intervals from top to bottom on the three-dimensional shelf, and the lifting platform can be raised and lowered to dock with the shuttle entry tracks of each floor, and in the docked state, the shuttle can travel from the shuttle entry track to the lifting platform, and the shuttle can travel from the lifting platform to the shuttle entry track; an A mounting beam is installed on one side of the lifting platform near the three-dimensional shelf, and a B mounting beam is installed on the lower part of one side of each shuttle entry track near the lifting platform, and an A unit and a B unit are mounted on the A mounting beam, and an A unit and a B unit are mounted on the B mounting beam, and the A unit on the A mounting beam and the B unit on the B mounting beam are coupled to each other, and the A unit on the B mounting beam and the B unit on the A mounting beam are coupled to each other;

[0008] When the heights of Unit A and Unit B, which are joined together, are misaligned, Unit A on the A mounting beam prevents the shuttle from sliding horizontally on the lifting platform, and Unit A on the B mounting beam prevents the shuttle from sliding horizontally on the shuttle entry track;

[0009] When the heights of Unit A and Unit B that are combined match, Unit B drives Unit A to move, thereby releasing the function of Unit A that prevents the shuttle from sliding out.

[0010] Additionally, Unit A includes a fixed base and a vertically asymmetric rotating body, a bearing is installed on the fixed base, and the rotating body is rotatably coupled to the fixed base through the bearing, with the center of mass of the rotating body located below the bearing; when the heights of Unit A and Unit B coupled to each other are misaligned, the rotating body is always maintained upright and facing upward.

[0011] Additionally, the rotating body includes a slender, long small end located above the bearing and a wide, shallow large end located below the bearing, a waist-shaped weight-reducing slot is installed openly in the small end and a counterweight is mounted in the large end, and under the combined action of the weight-reducing slot and the counterweight, the center of mass of the rotating body can be placed in the large end below the bearing.

[0012] Additionally, a transition track is installed on the lifting platform, and the transition track can be docked to each shuttle entry track; when docked, the running surface of the shuttle entry track and the running surface of the transition track are on the same plane.

[0013] Additionally, when the heights of Unit A and Unit B that are combined are misaligned, the top of the rotating body mounted on the A mounting beam is higher than the running surface of the transition track, and the top of the rotating body mounted on the B mounting beam is higher than the running surface of the shuttle entry track.

[0014] Additionally, Unit B includes a drive block and a mounting base, and a collision block is installed on the edge of either the left or right side of the large end of the rotating body; the drive block of Unit B is installed in correspondence with the collision block and is mounted on a lifting platform or each shuttle entry track via the mounting base, and during the process in which the lifting platform docks with each shuttle entry track of the three-dimensional shelf via a lifting mechanism, the drive block of Unit B and the collision block come into contact with each other, causing the rotating body of Unit A to rotate around a bearing until the top of the rotating body of Unit A becomes lower than the driving surface of the transition track or the driving surface of the shuttle entry track.

[0015] Additionally, magnets are installed on one side close to each other of the fixed base of Unit A and the rotating body, and after the driving block of Unit B is separated from the collision block on the rotating body, the attractive force between the two magnets can prevent the rotating body from shaking due to inertia.

[0016] Additionally, regarding a method for blocking a bidirectional blocking device for a three-dimensional warehouse lifting platform,

[0017] In the initial state, Unit A on the B mounting beam is in an upright position, and Unit A can prevent the shuttle from falling from the end of the current shuttle entry track; when the shuttle needs to move to the shuttle entry track of an upper or lower floor to perform a transport operation, the lifting platform is raised and lowered via a lifting mechanism to a position where it docks with the shuttle entry track where the current shuttle is located, and during the process of the lifting platform docking with the shuttle entry track, the two B units simultaneously drive the two A units to rotate around their respective bearings until the tops of both A units are lower than the running surface of the shuttle entry track where they are docked and the running surface of the transition track on the lifting platform, thereby preventing the two A units from still blocking the shuttle traveling from the current shuttle entry track to the lifting platform even after docking; and during the process of the lifting platform raising or lowering the shuttle via a lifting mechanism, Unit A on the A mounting beam is in an upright position, and Unit A can prevent the shuttle from falling from the lifting platform. Effects of the invention

[0019] The bidirectional blocking device and blocking method for a three-dimensional warehouse lifting platform according to the present invention automatically releases bidirectional positional limits when the lifting platform is docked to a shelf track through a gravity-magnetic force composite driving mechanism, adopts an asymmetric rotating body and a magnetic adsorption stabilization structure, and automatically forms a physical block in the docked state; furthermore, the shuttle always maintains single-sided protection during the platform lifting process, and by constructing a bidirectional interlock mechanism without external power, it can guarantee absolute positional limits in the undocking state through gravity-driven self-returning characteristics, and the blocking part is always maintained in an upright position through the design of the center of mass of the rotating body; by triggering synchronous rotation by the collision of the driving block during track docking, it achieves a smooth connection between two tracks; and by effectively suppressing inertial sway through a magnetic assembly, it improves system stability. Brief explanation of the drawing

[0021] Figure 1 is a structural schematic diagram of a bidirectional blocking device in the lowered state of a lifting platform. Figure 2 is a structural schematic diagram of a bidirectional blocking device in the raised state of a lifting platform. Figure 3 is a structural schematic diagram of Unit A. Figure 4 is a schematic diagram of the structural assembly of Unit A. Figure 5 is a structural schematic diagram of Unit B. Figure 6 is a schematic diagram of the side assembly of Unit A. Figure 7 is a schematic diagram of Unit A and Unit B combined. FIG. 8 is a structural schematic diagram of Unit A according to the second embodiment. FIG. 9 is a side view of Unit A according to a second embodiment. FIG. 10 is a side view of Unit A according to the third embodiment. Specific details for implementing the invention

[0022] The present invention will be further described below with reference to the drawings.

[0023] As illustrated in FIGS. 1 and 2, in a bidirectional blocking device for a three-dimensional warehouse lifting platform and a blocking method said, the device comprises a three-dimensional shelf (1), a lifting platform (2), a driving track, and a shuttle (6), wherein a number of sets of shuttle entry tracks (5) are installed at equal intervals from top to bottom on the three-dimensional shelf (1), wherein the shuttle entry track (5) of the layer closest to the ground on the three-dimensional shelf (1) is designated as the first layer shuttle entry track (5.1), and other shuttle entry tracks (5) on the three-dimensional shelf (1) are sequentially designated from bottom to top as the second layer shuttle entry track (5.2), the third layer shuttle entry track (5.3), and sequentially extend to the shuttle entry track (5.n) of the layer furthest from the ground on the three-dimensional shelf (1); At the same location on the shuttle entry track (5) of each floor on the three-dimensional shelf (1), a shuttle lifting area (not shown) is installed that overlaps in the vertical direction, and each of the shuttle lifting areas overlaps in the vertical direction to form a vertical lifting channel (not shown), and a lifting mechanism (not shown) capable of being lifted in the vertical direction is installed within the lifting channel, and the lifting platform (2) is slidably coupled to the lifting track of the lifting mechanism, and a transition track (26) is installed on the lifting platform (2), and in the docked state, the driving surface of the transition track (26) and the driving surface of the shuttle entry track (5) are on the same horizontal plane, and when the lifting platform (2) is lifted vertically relative to the three-dimensional shelf (1) through the lifting mechanism and docked to the shuttle entry track (5) of any floor, the shuttle (6) can travel from the shuttle entry track (5) to the transition track (26), or the shuttle (6) can enter from the lifting platform (2). It can be driven on the track (5); the lifting docking process of the lifting platform (2) is as follows.

[0024] In the initial state, the lifting platform (2) is installed to dock to the first floor shuttle entry track (5.1); when the lifting platform (2) is lifted from the first floor shuttle entry track (5.1) to the third floor shuttle entry track (5.3) via a lifting mechanism, during the lifting process, the transition track (26) on the lifting platform (2) is sequentially docked to the second floor shuttle entry track (5.2) and the third floor shuttle entry track (5.3), and the lifting speed of the lifting platform (2) is not reduced before the lifting platform (2) is docked to the third floor shuttle entry track (5.3), that is, the lifting platform (2) is separated immediately after docking to the second floor shuttle entry track (5.2); When the lifting platform (2) and the third floor shuttle entry track (5.3) are docked, the shuttle (6) on the third floor shuttle entry track (5.3) can move from the third floor shuttle entry track (5.3) to the transition track (26) on the lifting platform (2), or the shuttle (6) on the lifting platform (2) can move from the transition track (26) to the third floor shuttle entry track (5.3);

[0025] An A mounting beam (7) is installed on one side of the lifting platform (2) near the three-dimensional shelf (1), and a B mounting beam (8) is installed on the lower side of each of the shuttle entry tracks (5) near the lifting platform (2), and an A unit (3) and a B unit (4) are mounted on the A mounting beam (7), and an A unit (3) and a B unit (4) are mounted on the B mounting beam (8), and the A unit (3) on the A mounting beam (7) and the B unit (4) on the B mounting beam (8) are coupled to each other, and the A unit (3) on the B mounting beam (8) and the B unit (4) on the A mounting beam (8) are coupled to each other;

[0026] When the heights of the A unit (3) and B unit (4) that are combined with each other are misaligned, the upper part of the A unit (3) on the A mounting beam (7) is higher than the lower part of the shuttle (6) body traveling on the transition track (26), and the A unit (3) on the A mounting beam (7) prevents the shuttle (6) from sliding horizontally on the lifting platform (2); the upper part of the A unit (3) on the B mounting beam (8) is higher than the lower part of the shuttle (6) body traveling on the shuttle entry track (5), and the A unit (3) on the B mounting beam (8) prevents the shuttle (6) from sliding horizontally on the shuttle entry track (5); That is, when the lifting platform (2) moves between floors where each shuttle entry track (5) of the three-dimensional shelf (1) is located via a lifting mechanism or stops at an undocking position, the A unit (3) on the B mounting beam (8) prevents abnormal movement of the shuttle (6) on the lifting platform (2) or the shuttle entry track (5); that is, when the shuttle (6) on the shuttle entry track (5) of one floor needs to move to the shuttle entry track (5) of another floor via the lifting platform (2) to perform work, before the lifting platform (2) is fully docked to the shuttle entry track (5) where the shuttle (6) is located, the A unit (3) on the B mounting beam (8) installed on the shuttle entry track (5) where the shuttle (6) is located prevents the shuttle (6) from traveling from the shuttle entry track (5) of that floor to the lifting platform (2) after receiving an incorrect command, thereby preventing the shuttle (6) from falling from the three-dimensional shelf (1) to the ground after receiving an incorrect command; The A unit (3) on the A mounting beam (7) above can block abnormal movement of the shuttle (6) on the lifting platform, thereby preventing the shuttle (6) from receiving an incorrect command and falling from the lifting platform (2) to the ground.

[0027] When the heights of the A unit (3) and the B unit (4) that are joined together match each other, the B unit (4) drives the A unit (3) that is joined together to move, thereby releasing the function of the A unit (3) that prevents the shuttle (6) from sliding out; that is, when the lifting platform (2) is docked to the shuttle entry track (5) of any floor, the A unit (3) is below the shuttle entry track (5) driving surface and the transition track (26) driving surface, and the shuttle (6) can travel from the shuttle entry track (5) to the transition track (26), or the shuttle (6) can travel from the lifting platform (2) to the shuttle entry track (5).

[0028] As illustrated in FIGS. 3 and 4, Unit A (3) comprises a fixed base (9) and a vertically asymmetric rotating body (10), wherein the rotating body (10) is rotatably coupled to the fixed base (9) via a bearing (19), and the center of mass of the rotating body (10) is positioned below the bearing (19); in a state where no external force is applied, i.e., in a non-docking state, the rotating body (10) is always maintained upright and facing upward; when the heights of Unit A (3) and Unit B (4) coupled to each other are misaligned, the rotating body (10) is always maintained upright and facing upward; and Unit A (3) on the A mounting beam (7) can block the shuttle (6) from traveling from the transition track (26) on the lifting platform (2) to the shuttle entry track (5) after receiving an incorrect command, thereby preventing the shuttle (6) from falling from the lifting platform (2) to the ground after receiving an incorrect command; The upper part of the rotating body (10) of the A unit (3) mounted on the B mounting beam (8) is higher than the driving surface of the shuttle entry track (5), and the A unit (3) on the B mounting beam (8) prevents the shuttle (6) from traveling from the shuttle entry track (5) on the floor to the transition track (26) on the lifting platform (2) after receiving an incorrect command, thereby preventing the shuttle (6) from falling from the three-dimensional shelf (1) to the ground after receiving an incorrect command.

[0029] The above-described rotating body (10) includes a slender, long small end (13) located above a bearing (19) and a wide, shallow large end (14) located below the bearing (19), the large end (14) and the small end (13) are integrally connected and installed, a waist-shaped weight reduction slot (15) is installed openly in the small end (13), and a counterweight (12) is mounted in the large end (14), and the center of mass of the rotating body (10) can be placed at the large end (14) below the bearing (19) under the combined action of the weight reduction slot (15) and the counterweight (12); Thus, when the rotating body (10) is subjected only to its own gravity, it is ensured that the small end (13) always remains upright and facing upward, and thus, when no external force is applied, it is ensured that the top of the small end (13) always remains higher than the driving surface of the shuttle entry track (5) and the driving surface of the transition track (26) on the lifting platform (2), and thus, when the shuttle (6) located on the shuttle entry track (5) or the shuttle (6) located on the lifting platform (2) travels along the driving surface of the shuttle entry track (5) or the driving surface of the transition track (26) after receiving an incorrect command, it is ensured that the small end (13) of the rotating body (10) can come into contact with the side of the shuttle (6) so as to be positioned restricted, thereby preventing the shuttle (6) from falling from the three-dimensional shelf (1) or the lifting platform (2) to the ground after receiving an incorrect command.

[0030] One side of the large end (14) located far from the small end (13) has an arc-shaped contour, and by setting it this way, the influence of Unit A (3) on the transport of goods on the lower floor can be effectively reduced.

[0031] As illustrated in FIG. 5, the apparatus further comprises a B unit (4), wherein the B unit (4) comprises a drive block (16) and a mounting base (17), and a collision block (11) is installed on the edge of either the left or right side of the large end (14) of the rotating body (10), and the drive block (16) of the B unit (4) is installed in correspondence with the collision block (11) and is mounted to the lifting platform (2) or each shuttle entry track (5) via the mounting base (17), that is, the drive block (16) is mounted to one side of the lifting platform (2) near each shuttle entry track (5) relative to the collision block (11) via the mounting base (17), or the drive block (16) is mounted to one side of each shuttle entry track (5) near the lifting platform (2) relative to the collision block (11) via the mounting base (17), and the lifting platform (2) is to each shuttle entry track (5) of the three-dimensional shelf (1) via a lifting mechanism During the docking process, the drive blocks (16) of the two B units (4) each come into contact with the collision blocks (11) of the A unit (3) that are joined together, causing the rotating body (10) of the A unit (3) to rotate around the bearing (19) until the upper end of the small end (13) of the rotating body (10) of the A unit (3) rotates below the shuttle entry track (5) and transition track (26) driving surfaces; thereby preventing the rotating body (10) from hindering the shuttle (6) from moving from the shuttle entry track (5) to the transition track (26) on the lifting platform (2) after the transition track (26) on the lifting platform (2) is docked to the shuttle entry track (5), or preventing the rotating body (10) from hindering the shuttle (6) from moving from the transition track (26) on the lifting platform (2) to the shuttle entry track (5).

[0032] As shown in FIG. 6, magnets (18) are installed on both sides close to each other on the fixed base (9) of the A unit (3) and the rotating body (10), and after the driving block (16) of the B unit (4) is separated from the collision block (11) on the rotating body (10), the attractive force between the two magnets (18) can prevent the rotating body (10) from shaking due to inertia.

[0033] In the initial state, the A unit (3) on the A mounting beam (7) is in an upright state, and the A unit (3) on the B mounting beam (8) is in an upright state, and the A unit (3) can prevent the shuttle (6) from falling off the end of the current shuttle entry track (5);

[0034] As illustrated in FIGS. 1 and 7, in a method of blocking a bidirectional blocking device for a three-dimensional warehouse lifting platform, when a shuttle (6) needs to move to a shuttle entry track (5) on an upper or lower floor to perform a transport operation, the lifting platform (2) is raised or lowered through a lifting mechanism to a position where it docks with the shuttle entry track (5) where the shuttle (6) is currently located, and during the process of the lifting platform (2) docking with the shuttle entry track (5), the drive block (16) of the B unit (4) on the B mounting beam (8) collides with the collision block (11) of the A unit (3) on the A mounting beam (7), thereby causing the A unit (3) on the A mounting beam (7) to rotate around its own bearing (19) until the upper end of the A unit (3) on the A mounting beam (7) becomes lower than the driving surface of the shuttle entry track (5) and the lifting surface of the lifting platform (2) in the docked state; Additionally, the drive block (16) of the B unit (4) on the A mounting beam (7) collides with the collision block (11) of the A unit (3) on the B mounting beam (8), thereby causing the A unit (3) on the B mounting beam (8) to rotate around its own bearing (19) until the upper part of the A unit (3) on the B mounting beam (8) is lower than the driving surface of the shuttle entry track (5) and the lifting surface of the lifting platform (2) in the docking state, thereby ensuring that the A unit (3) on the A mounting beam (7) and the B mounting beam (8) do not prevent the shuttle (6) from traveling from the current shuttle entry track (5) to the lifting platform (2) even after docking; After docking is complete, when the contact between Unit A (3) and Unit B (4) is released, Unit A (3) rotates rapidly around the bearing (19) under the action of the magnet (18) and returns to an upright state, and during the process in which the lifting platform (2) raises or lowers the shuttle (6) through the lifting mechanism, Unit A (3) on the A mounting beam (7) remains in an upright state, and Unit A (3) can prevent the shuttle (6) from falling off the lifting platform (2).

[0035] The above A unit (3) is also equipped with a rotational speed detection device, and the rotational speed detection device can detect the amount of rotation of the rotational body (10) of the A unit (3) relative to the bearing (19) per second. If the rotational speed detection device detects that the rotational angle of the rotational body (10) of the A unit (3) relative to the bearing (19) per second is too large, this indicates that the lifting speed of the lifting platform (2) is abnormal and that there is a problem with the lifting mechanism driving the lifting movement of the lifting platform (2). For example, if the lifting platform (2) is in a relatively high position, the lifting mechanism may fail and the lifting platform (2) may free-fall; an alarm device is installed on the lifting platform (2), and the rotational speed detection device is signal-associated with the alarm device. If the amount of rotation detected by the rotational speed detection device is greater than a preset value, the rotational speed detection device triggers the alarm device to generate an alarm.

[0036] The above description is a first embodiment of the solution means. In the first embodiment, magnets (18) are installed on both sides close to each other on the fixed base (9) and the rotating body (10) of the A unit (3), thereby solving the problem of the A unit (3) shaking back and forth due to inertia after the contact state between the A unit (3) and the B unit (4) is released. However, the items stored on the three-dimensional shelf (1) change frequently, and the presence of the magnets (18) increases the degree of collision between the B unit (4) and the A unit (3) under the operation of the lifting platform (2). Consequently, the items on the shuttle (6) transporting the items on the lifting platform (2) vibrate, and whenever the lifting platform (2) rises or falls one level, the above-described vibration occurs. At this time, if the items on the shuttle (6) are fragile items, the items are damaged due to the above-described vibration. Regarding the above-described problem, the solution means presents a second embodiment.

[0037] As illustrated in FIGS. 8 and 9, a rotation axis (20) is installed vertically on the fixed base (9), and a bearing (19) on the rotating body (10) is installed so as to be slidably axially on the rotation axis (20), and the rotating body (10) can slide along the longitudinal direction of the rotation axis (20) through the bearing (19) so as to adjust the interaction force between the two magnets (18).

[0038] A sliding adjustment slot is installed openly on the rotating shaft (20), and a locking bolt (23) is slidably coupled to the sliding adjustment slot. An axial position limiting plate (21) is installed over the rotating shaft (20), and the axial position limiting plate (21) is positioned between the fixed base (9) and the rotating body (10). The position limiting surface of the axial position limiting plate (21) always contacts one side of the rotating body (10) that is close to the fixed base (9) to be position-limited. A position limiting bracket (22) is installed on one side of the axial position limiting plate (21) that is far from the rotating body (10). One end of the locking bolt (23) passes through the sliding adjustment slot and is threaded into the position limiting bracket (22). A locking nut (24) is threaded into the screw of the locking bolt (23) located between the position limiting bracket (22) and the rotating shaft (20). The axial position limiting plate (21) can be locked to the rotation axis (20) through the threaded connection between the nut (24) and the locking bolt (23), thereby allowing the axial position limiting plate (21) to axially limit the rotation body (10).

[0039] In the second embodiment, the warehouse manager can adjust the position of the locking bolt (23) in the sliding adjustment slot according to the type of item currently stored on the three-dimensional shelf (1), thereby achieving the purpose of changing the distance between the two magnets (18) installed on one side close to each other between the fixed base (9) of the A unit (3) and the rotating body (10), thereby achieving the purpose of adjusting the interaction force between the two magnets (18), thereby reducing the degree of collision between the B unit (4) and the A unit (3) under the operation of the lifting platform (2), and within an adjustable range, under the action of the mutual attraction force between the two magnets (18), the rotating body (10) always tends to move in a direction closer to the fixed base (9).

[0040] Although the modification made in the second embodiment can cause the interaction force between the two magnets of Unit A (3) to vary according to the lifting speed corresponding to the type of goods stored on the three-dimensional shelf (1), in the second embodiment, the lifting speed of the lifting platform (2) is the same regardless of whether the lifting platform (2) is in an unloading state, whether a shuttle (6) that does not transport goods is loaded on the lifting platform (2), or whether a shuttle (6) loaded with goods is loaded on the lifting platform (2), making it difficult to improve warehouse operation efficiency, the present solution presents a third embodiment.

[0041] A rotation axis (20) is installed vertically on the fixed base (9), and a bearing (19) on the rotating body (10) is installed so as to be slidably axially on the rotation axis (20), and the rotating body (10) can slide along the longitudinal direction of the rotation axis (20) through the bearing (19) so as to adjust the interaction force between the two magnets (18).

[0042] As illustrated in FIG. 10, an axial position limiting plate (21) is installed over the rotating shaft (20), and the axial position limiting plate (21) is located between the fixed base (9) and the rotating body (10), and the position limiting surface of the axial position limiting plate (21) is always in contact with one side of the rotating body (10) that is close to the fixed base (9) so as to be position-limited. An electric telescopic rod (25) is installed on the fixed base (9) in correspondence with the axial position limiting plate (21), and the telescopic end of the electric telescopic rod (25) is fixedly connected to one side of the axial position limiting plate (21) that is far from the rotating body (10).

[0043] Within the extension range of the electric extension rod (25), the rotating body (10) tends to move in a direction that always approaches the fixed base (9) under the action of the mutual attractive force between the two magnets (18).

[0044] A gravity sensor is installed on the transition track (26) on the lifting platform (2), and the gravity sensor can recognize the weight applied to the transition track (26). The gravity sensor is signal-associated with an electric telescopic rod (25). The gravity sensor is configured with unloading data, first gravity data, and second gravity data corresponding to three cases: when the lifting platform (2) is in an unloading state, when a shuttle (6) carrying no goods is loaded on the lifting platform (2), and when a shuttle (6) carrying goods is loaded on the lifting platform (2). The third gravity data can be appropriately adjusted according to the type of goods. When a lifting command is received on the lifting platform (2) and no data is detected by the gravity sensor, it indicates that the lifting platform (2) is in an unloading state, and the gravity sensor extends the telescopic end of the electric telescopic rod (25) to its maximum length. When first gravity data is detected by the gravity sensor, it indicates that a shuttle (6) carrying no goods is loaded on the lifting platform (2), and the gravity sensor extends the extension end of the electric extension rod (25) to a length where almost no collision force occurs between the B unit (4) and the A unit (3) under the operation of the lifting platform (2); when second gravity data is detected by the gravity sensor, it indicates that a shuttle (6) loaded with goods is loaded on the lifting platform (2), and the gravity sensor extends the extension end of the electric extension rod (25) to a length where almost no collision force occurs between the B unit (4) and the A unit (3) under the operation of the lifting platform (2).

[0045] The above description is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should also be considered to be included within the scope of protection of the present invention.

Claims

Claim 1 A bidirectional blocking device for a three-dimensional warehouse lifting platform comprises a three-dimensional shelf (1), a lifting platform (2), a driving track, and a shuttle (6), wherein multiple sets of shuttle entry tracks (5) are installed at equal intervals from top to bottom on the three-dimensional shelf (1), and the lifting platform (2) can be raised and lowered to dock with the shuttle entry tracks (5) on each floor, and in the docked state, the shuttle (6) can travel from the shuttle entry tracks (5) to the lifting platform (2), and the shuttle (6) can travel from the lifting platform (2) to the shuttle entry tracks (5); An A mounting beam (7) is installed on one side of the lifting platform (2) near the three-dimensional shelf (1), and a B mounting beam (8) is installed on the lower side of each shuttle entry track (5) near the lifting platform (2), and an A unit (3) and a B unit (4) are mounted on the A mounting beam (7), and an A unit (3) and a B unit (4) are mounted on the B mounting beam (8), and the A unit (3) on the A mounting beam (7) and the B unit (4) on the B mounting beam (8) are coupled to each other, and the A unit (3) on the B mounting beam (8) and the B unit (4) on the A mounting beam (7) are coupled to each other; when the heights of the A unit (3) and the B unit (4) that are coupled to each other are misaligned, the A unit (3) on the A mounting beam (7) prevents the shuttle (6) from sliding horizontally out of the lifting platform (2), and the A unit (3) on the B mounting beam (8) Prevents the shuttle (6) from sliding horizontally on the shuttle entry track (5); when the heights of the A unit (3) and the B unit (4) that are joined together match each other, the B unit (4) drives the A unit (3) that is joined together to move, thereby releasing the function of the A unit (3) that prevents the shuttle (6) from sliding;A transition track (26) is installed on the lifting platform (2), and the transition track (26) can be docked to each of the shuttle entry tracks (5), and in the docked state, the driving surface of the shuttle entry track (5) and the driving surface of the transition track (26) are on the same plane; the A unit (3) includes a fixed base (9) and a rotating body (10) that is asymmetric in the longitudinal direction, a bearing (19) is installed on the fixed base (9), and the rotating body (10) is rotatably coupled to the fixed base (9) through the bearing (19), and the center of mass of the rotating body (10) is located below the bearing (19); When the heights of the A unit (3) and B unit (4) that are combined with each other are misaligned, the rotating body (10) is always maintained upright and facing upward; magnets (18) are installed on both the fixed base (9) of the A unit (3) and on one side close to each other of the rotating body (10), and after the drive block (16) of the B unit (4) is separated from the collision block (11) on the rotating body (10), the attractive force between the two magnets (18) can prevent the rotating body (10) from shaking due to inertia; a rotation axis (20) is installed vertically on the fixed base (9), and a bearing (19) on the rotating body (10) is installed so as to be slidably axially on the rotation axis (20), and the rotating body (10) can slide along the longitudinal direction of the rotation axis (20) through the bearing (19) so as to adjust the interaction force between the two magnets (18);An axial position limiting plate (21) is installed over the above-mentioned rotating shaft (20), and the axial position limiting plate (21) is located between the fixed base (9) and the rotating body (10), and the position limiting surface of the axial position limiting plate (21) is always in contact with one side of the rotating body (10) that is close to the fixed base (9) so as to be position-limited; an electric telescopic rod (25) is installed on the fixed base (9) in correspondence with the axial position limiting plate (21), and the telescopic end of the electric telescopic rod (25) is fixedly connected to one side of the axial position limiting plate (21) that is far from the rotating body (10); a gravity sensor is installed on the transition track (26) on the above-mentioned lifting platform (2), and the gravity sensor can recognize the weight applied to the transition track (26), and the gravity sensor is signal-associated with the electric telescopic rod (25), and the gravity sensor, the lifting platform (2) A bidirectional blocking device for a three-dimensional warehouse lifting platform, characterized in that, corresponding to three cases—when in an unloading state, when a shuttle (6) that does not carry goods is loaded on the lifting platform (2), and when a shuttle (6) loaded with goods is loaded on the lifting platform (2)—unloading data, first gravity data, and second gravity data are set respectively, and when any one of the above-described data is detected by the gravity sensor, the extension end of the electric telescopic rod (25) is controlled to extend to a corresponding length. Claim 2 A bidirectional blocking device for a three-dimensional warehouse lifting platform, characterized in that, in claim 1, the rotating body (10) comprises a slender, long small end (13) located above a bearing (19) and a wide, shallow large end (14) located below the bearing (19), a waist-shaped weight reduction slot (15) is installed openly in the small end (13), a counterweight (12) is mounted in the large end (14), and the center of mass of the rotating body (10) can be placed at the large end (14) below the bearing (19) under the combined action of the weight reduction slot (15) and the counterweight (12). Claim 3 A bidirectional blocking device for a three-dimensional warehouse lifting platform, characterized in that, in the first paragraph, when the heights of the A unit (3) and the B unit (4) that are combined with each other are misaligned, the upper end of the rotating body (10) mounted on the A mounting beam (7) is higher than the driving surface of the transition track (26), and the upper end of the rotating body (10) mounted on the B mounting beam (8) is higher than the driving surface of the shuttle entry track (5). Claim 4 In paragraph 2, the B unit (4) comprises a drive block (16) and a mounting base (17), and a collision block (11) is installed on the edge of either the left or right side of the large end (14) of the rotating body (10), and the drive block (16) of the B unit (4) is installed in correspondence with the collision block (11) and is mounted to the lifting platform (2) or each shuttle entry track (5) via the mounting base (17), and during the process of the lifting platform (2) docking to each shuttle entry track (5) of the three-dimensional shelf (1) via the lifting mechanism, the drive block (16) of the B unit (4) and the collision block (11) come into contact with each other, so that the rotating body (10) of the A unit (3) rotates around the bearing (19) until the upper end of the rotating body (10) of each A unit (3) is lower than the driving surface of the transition track (26) or the driving surface of the shuttle entry track (5). Bidirectional blocking device. Claim 5 As a blocking method for a bidirectional blocking device for a three-dimensional warehouse lifting platform according to claim 1, in the initial state, the A unit (3) on the B mounting beam (8) is in an upright state, and the A unit (3) can prevent the shuttle (6) from falling off the end of the current shuttle entry track (5); When the shuttle (6) needs to move to the shuttle entry track (5) on the upper or lower floor to perform a transport operation, the lifting platform (2) is raised or lowered via a lifting mechanism to a position where it docks with the shuttle entry track (5) where the shuttle (6) is currently located, and during the process of the lifting platform (2) docking with the shuttle entry track (5), the two B units (4) simultaneously drive the two A units (3) to rotate around their respective bearings (19) until the upper ends of both A units (3) are lower than the driving surface of the shuttle entry track (5) and the driving surface of the transition track (26) on the lifting platform (2), thereby preventing the two A units (3) from still blocking the shuttle (6) traveling from the current shuttle entry track (5) to the lifting platform (2) even after docking; A method of blocking a bidirectional blocking device for a three-dimensional warehouse lifting platform, characterized in that, during the process in which the lifting platform (2) raises or lowers the shuttle (6) through the lifting mechanism, the A unit (3) on the A mounting beam (7) is in an upright state, and the A unit (3) can prevent the shuttle (6) from falling off the lifting platform (2).

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