Bidirectional blocking apparatus for stereoscopic warehouse lifting platform, and blocking method thereof

Abstract

Disclosed in the present invention are a bidirectional blocking apparatus for a stereoscopic warehouse lifting platform, and a blocking method thereof. The apparatus comprises a stereoscopic rack, a lifting platform, travel tracks, and a shuttle; several shuttle entry tracks are equidistantly arranged from bottom to top on the stereoscopic rack; the lifting platform can move up and down to dock with all the shuttle entry tracks; in a docked state, the shuttle can travel from the shuttle entry tracks to the lifting platform, and the shuttle can travel from the lifting platform to the shuttle entry tracks; and an A mounting beam is provided on the side of the lifting platform close to the stereoscopic rack and a B mounting beam is provided in the lower portion of the side of each shuttle entry track close to the lifting platform, wherein an A unit and a B unit are mounted on the A mounting beam, an A unit and a B unit are mounted on the B mounting beam, the A unit on the A mounting beam fits with the B unit on the B mounting beam, and the A unit on the B mounting beam fits with the B unit on the A mounting beam. Bidirectional limiting can be automatically released when the lifting platform is docked with the rack tracks.

Description

A bidirectional blocking device for a stereoscopic warehouse lifting platform and a blocking method thereof TECHNICAL FIELD

[0001] The present application belongs to the technical field of intelligent warehousing, more specifically, a bidirectional blocking device for a stereoscopic warehouse lifting platform and a blocking method thereof. BACKGROUND

[0002] When the conventional stereoscopic warehouse lifting platform is connected with the rack track, the shuttle car anti-falling function is often realized by relying on a complex sensor system, the sensor array is arranged in the track connection area, the position of the shuttle car is monitored in real time, and the braking mechanism is triggered by electric signal. However, the sensor is easily disturbed by the environment, which leads to false triggering or response delay. Especially in high-frequency track switching operation, the signal transmission delay of the sensor system will cause the limit action and the shuttle car movement to be out of sync, which cannot meet the real-time requirements of high-speed warehousing. Moreover, when the platform and the rack track have a height difference, the sensor cannot form an effective physical barrier, and there is a risk of high-altitude car falling. In addition, a large number of sensor groups need to be configured for multi-level tracks, which is complex in wiring and high in maintenance cost. TECHNICAL PROBLEM

[0003] In order to overcome the deficiencies in the prior art, the present application provides a bidirectional blocking device for a stereoscopic warehouse lifting platform and a blocking method thereof, which can automatically release the bidirectional limit when the lifting platform is connected with the rack track. Moreover, a physical barrier is automatically formed in the connected state. Furthermore, the shuttle car always maintains unilateral protection during the lifting process of the platform, and a bidirectional interlocking mechanism without external power is constructed, solving the response lag and complex maintenance of the traditional device. TECHNICAL SOLUTION

[0004] To achieve the above-mentioned purpose, the bidirectional blocking device for a stereoscopic warehouse lifting platform and the blocking method thereof of the present application, comprising a stereoscopic rack, a lifting platform, a running track and a shuttle car, the stereoscopic rack is equally spaced from bottom to top with a plurality of groups of shuttle car entry tracks, the lifting platform can be lifted to be connected with each layer of shuttle car entry track, in the connected state, the shuttle car can run from the shuttle car entry track to the lifting platform, and the shuttle car can run from the lifting platform to the shuttle car entry track; the side of the lifting platform close to the stereoscopic rack is provided with an A mounting beam, the lower part of each shuttle car entry track close to the lifting platform is provided with a B mounting beam, the A mounting beam is installed with an A unit and a B unit, the B mounting beam is installed with an A unit and a B unit, the A unit on the A mounting beam cooperates with the B unit on the B mounting beam, and the A unit on the B mounting beam cooperates with the B unit on the A mounting beam;

[0005] When the A unit and the B unit are staggered in height, the A unit on the A mounting beam prevents the shuttle from sliding horizontally out of the lifting platform, and the A unit on the B mounting beam prevents the shuttle from sliding horizontally out of the shuttle entering track.

[0006] When the A unit and the B unit are coincided in height, the B unit drives the matched A unit to act, so that the A unit releases the function of preventing the shuttle from sliding out.

[0007] Further, the A unit comprises a fixed seat and a vertically asymmetric rotating body, the fixed seat is provided with a bearing, the rotating body is rotationally fitted on the fixed seat through the bearing, and the center of mass of the rotating body is located below the bearing; when the A unit and the B unit are staggered in height, the rotating body always remains vertically upward.

[0008] Further, the rotating body comprises an elongated small end above the bearing and a wide and short large end below the bearing, a waist-shaped weight-reducing groove is formed on the small end, and a counterweight is mounted on the large end; the combined action of the weight-reducing groove and the counterweight can make the center of mass of the rotating body located at the large end below the bearing.

[0009] Further, an excess track is arranged on the lifting platform, the excess track can be butt-jointed with each shuttle entering track, and in the butt-jointed state, the running surface of the shuttle entering track is coplanar with the running surface of the excess track.

[0010] Further, when the A unit and the B unit are staggered in height, the top end of the rotating body mounted on the A mounting beam is higher than the running surface of the excess track, and the top end of the rotating body mounted on the B mounting beam is higher than the running surface of the shuttle entering track.

[0011] Further, the B unit comprises a driving block and a mounting seat, a collision block is arranged at the edge of any one side of the large end of the rotating body, the driving block of the rotating drive assembly is arranged corresponding to the collision block and is mounted on the lifting platform or each shuttle entering track through the mounting seat, in the process of butt-jointing of the lifting platform and each shuttle entering track of the three-dimensional shelf through the lifting mechanism, the driving block of the rotating drive assembly contacts with the collision block and drives the rotating body of the A unit to rotate around the bearing until the top end of the rotating body of each A unit is lower than the running surface of the excess track or the running surface of the shuttle entering track.

[0012] Further, the fixed seat and the rotating body of the A unit are both provided with a magnet on the side close to each other, after the driving block of the B unit and the collision block on the rotating body are separated, the attractive force between the two magnets can hinder the rotating body from swinging under the action of inertia.

[0013] Further, a blocking method of a bidirectional blocking device for a stereoscopic warehouse lifting platform is provided:

[0014] In the initial state, the A unit on the B mounting beam is in a vertical state, and the A unit can avoid the shuttle from falling off the end of the current shuttle entry track; when the shuttle needs to go to the upper or lower shuttle entry track for carrying work, the lifting platform is raised or lowered to the position of the interface with the current shuttle entry track through the lifting mechanism, and in the process of the interface between the lifting platform and the shuttle entry track, the two B units simultaneously drive the two A units to rotate around the bearings thereof until the top ends of the two A units are lower than the running surface of the interface state shuttle entry track and the running surface of the overpass track on the lifting platform, so that the two A units can avoid blocking the shuttle from running on the current shuttle entry track to the lifting platform after the interface; in the process of the lifting platform being raised or lowered with the shuttle through the lifting mechanism, the A unit on the A mounting beam is in a vertical state, and the A unit can avoid the shuttle from falling off the lifting platform. Advantages

[0015] The bidirectional blocking device for the stereoscopic warehouse lifting platform and the blocking method thereof of the application realize automatic release of bidirectional limiting when the lifting platform is interfaced with the rack track through the gravity-magnetic force composite driving mechanism, adopt the asymmetric rotating body and the magnetic attraction stabilizing structure, and automatically form physical blocking in the interface state; moreover, the shuttle always maintains one-side protection during the lifting process of the platform, simultaneously constructs a bidirectional interlocking mechanism without external power, can ensure absolute limiting in the non-interface state through the gravity self-resetting characteristics, and makes the blocking part always keep vertical through the centroid design of the rotating body; synchronous rotation is triggered through the collision of the driving block when the track is interfaced, seamless connection of the double tracks is realized, and the inertial swing is effectively inhibited through the magnet assembly to improve the stability of the lifting system. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is a structural schematic view of the bidirectional blocking device in the lowering state of the lifting platform;

[0017] Fig. 2 is a structural schematic view of the bidirectional blocking device in the lifting state of the lifting platform;

[0018] Fig. 3 is a structural schematic view of the A unit;

[0019] Fig. 4 is an assembly schematic view of the A unit structure;

[0020] Fig. 5 is a structural schematic view of the B unit;

[0021] Fig. 6 is a lateral assembly schematic view of the A unit;

[0022] Fig. 7 is a cooperation schematic view of the A unit and the B unit;

[0023] Figure 8 is a schematic diagram of a second embodiment A unit structure;

[0024] Figure 9 is a side view of a second embodiment A unit;

[0025] Figure 10 is a side view of a third embodiment A unit. Embodiments of the present application

[0026] The present application will be further described below with reference to the accompanying drawings.

[0027] As shown in Figures 1-2, a bidirectional blocking device for a stereoscopic warehouse lifting platform and a blocking method thereof, comprising a stereoscopic shelf 1, a lifting platform 2, a running track and a shuttle vehicle 6, the stereoscopic shelf 1 is provided with a plurality of groups of shuttle vehicle entry tracks 5 at equal intervals from bottom to top, the shuttle vehicle entry track 5 closest to the ground on the stereoscopic shelf 1 is the first layer shuttle vehicle entry track 5.1, and the other shuttle vehicle entry tracks 5 on the stereoscopic shelf 1 are sequentially the second layer shuttle vehicle entry track 5.2, the third layer shuttle vehicle entry track 5.3, and so on until the shuttle vehicle entry track 5.n farthest from the ground on the stereoscopic shelf 1; the same position of each layer of shuttle vehicle entry tracks 5 on the stereoscopic shelf 1 is provided with vertically overlapping shuttle vehicle lifting areas (not shown in the diagram), each of the shuttle vehicle lifting areas is vertically stacked and forms a vertical lifting channel (not shown in the diagram), the lifting channel is provided with a lifting mechanism capable of vertical lifting (not shown in the diagram), the lifting platform 2 is slidingly fitted in the lifting track of the lifting mechanism, and the lifting platform 2 is provided with an extension track 26, in the docking state, the running surface of the extension track 26 is at the same horizontal plane as the running surface of the shuttle vehicle entry track 5, when the lifting platform 2 is vertically lifted relative to the stereoscopic shelf 1 by the lifting device to dock with any one of the shuttle vehicle entry tracks 5, the shuttle vehicle 6 can run from the shuttle vehicle entry track 5 to the extension track 26, or the shuttle vehicle 6 can run from the lifting platform 2 to the shuttle vehicle entry track 5; the lifting and docking process of the lifting platform 2 is as follows:

[0028] In the initial state, the lifting platform 2 is in the state of being docked with the first layer of the shuttle entering track 5.1; when the lifting platform 2 is lifted from the first layer of the shuttle entering track 5.1 to the third layer of the shuttle entering track 5.3 by the lifting device, during the lifting process, the excess track 26 on the lifting platform 2 is sequentially docked with the second layer of the shuttle entering track 5.2 and the third layer of the shuttle entering track 5.3, and before the lifting platform 2 is docked with the third layer of the shuttle entering track 5.3, the lifting speed of the lifting platform 2 is not weakened, that is, the lifting platform 2 is immediately separated after being docked with the second layer of the shuttle entering track 5.2; when the lifting platform 2 is in the state of being docked with the third layer of the shuttle entering track 5.3, the shuttle 6 on the third layer of the shuttle entering track 5.3 can be moved from the third layer of the shuttle entering track 5.3 to the excess track 26 on the lifting platform 2, or the shuttle 6 on the lifting platform 2 can be moved from the excess track 26 to the third layer of the shuttle entering track 5.3;

[0029] The side of the lifting platform 2 close to the three-dimensional shelf 1 is provided with an A mounting beam 7, the lower part of each shuttle entering track 5 close to the lifting platform 2 is provided with a B mounting beam 8, the A mounting beam 7 is installed with an A unit 3 and a B unit 4, the B mounting beam 8 is installed with an A unit 3 and a B unit 4, the A unit 3 on the A mounting beam 7 cooperates with the B unit 4 on the B mounting beam 8, and the A unit 3 on the B mounting beam 8 cooperates with the B unit 4 on the A mounting beam 8;

[0030] When the A unit 3 and the B unit 4 are staggered in height, the upper end of the A unit 3 on the A mounting beam 7 is higher than the lower end of the vehicle body of the shuttle 6 running on the overpass track 26, and the A unit 3 on the A mounting beam 7 prevents the shuttle 6 from sliding horizontally out of the lifting platform 2; the upper end of the A unit 3 on the B mounting beam 8 is higher than the lower end of the vehicle body of the shuttle 6 running on the shuttle-in track 5, and the A unit 3 on the B mounting beam 8 prevents the shuttle 6 from sliding horizontally out of the shuttle-in track 5; that is, when the lifting platform 2 moves between the layers of the shuttle-in tracks 5 of the stereoscopic shelf 1 or stops at a non-docking position by the lifting mechanism, the A unit 3 on the B mounting beam 8 prevents the abnormal running of the shuttle 6 on the lifting platform 2 or the shuttle-in track 5; that is, when the shuttle 6 on a certain layer of the shuttle-in track 5 needs to be transferred to another layer of the shuttle-in track 5 to work by the lifting platform 2, before the lifting platform 2 is docked with the shuttle-in track 5 where the shuttle 6 is located, the A unit 3 on the B mounting beam 8 arranged on the shuttle-in track 5 where the shuttle 6 is located prevents the shuttle 6 from running on the layer of the shuttle-in track 5 to the lifting platform 2 after receiving an error command, avoiding the shuttle 6 from falling to the ground from the stereoscopic shelf 1 due to receiving an error command; the A unit 3 on the A mounting beam 7 can prevent the abnormal running of the shuttle 6 on the lifting platform, avoiding the shuttle 6 from falling to the ground from the lifting platform 2 due to receiving an error command.

[0031] When the A unit 3 and the B unit 4 are coincided in height, the B unit 4 drives the matched A unit 3 to act, so that the A unit 3 releases the function of preventing the shuttle 6 from sliding out; that is, when the lifting platform 2 is docked with any layer of the shuttle-in track 5, the A unit 3 is below the running surface of the shuttle-in track 5 and the running surface of the overpass track 26, and the shuttle 6 can run from the shuttle-in track 5 to the overpass track 26, or the shuttle 6 can run from the lifting platform 2 to the shuttle-in track 5.

[0032] As shown in Figs. 3-4, the A unit 3 comprises a fixed seat 9 and a vertically asymmetric rotating body 10, which is rotatably fitted on the fixed seat 9 through a bearing 19, and the center of mass of the rotating body 10 is below the bearing 19; in the state without external force, i.e. the state without docking, the rotating body 10 always remains vertically upward; when the mutually matched A unit 3 and B unit 4 are staggered in height, the rotating body 10 always remains vertically upward; the A unit 3 on the A mounting beam 7 can block the shuttle vehicle 6 from driving into the track 5 on the lifting platform 2 after receiving a wrong command, thereby avoiding the shuttle vehicle 6 from falling from the lifting platform 2 to the ground due to receiving a wrong command; the top end of the rotating body 10 in the A unit 3 mounted on the B mounting beam 8 is higher than the driving surface of the shuttle vehicle driving-in track 5, and the A unit 3 on the B mounting beam 8 blocks the shuttle vehicle 6 from driving into the shuttle vehicle driving-in track 5 on the layer to the excessive track 26 on the lifting platform 2 after receiving a wrong command, thereby avoiding the shuttle vehicle 6 from falling from the stereoscopic goods shelf 1 to the ground due to receiving a wrong command.

[0033] The rotating body 10 comprises an elongated small end 13 above the bearing 19 and a wide and short large end 14 below the bearing 19, which are integrally connected, a waist-shaped weight-reducing groove 15 is formed on the small end 13, and a counterweight 12 is mounted on the large end 14, and the combined action of the weight-reducing groove 15 and the counterweight 12 can make the center of mass of the rotating body 10 be at the large end 14 below the bearing 19; thereby ensuring that the small end 13 always remains vertically upward under the condition of only its own gravity, thereby ensuring that the upper end of the small end 13 is always higher than the driving surface of the shuttle vehicle driving-in track 5 and the driving surface of the excessive track 26 on the lifting platform 2 under the condition without external force, thereby ensuring that the small end 13 of the rotating body 10 can limit the contact with the side of the shuttle vehicle 6 when the shuttle vehicle 6 on the shuttle vehicle driving-in track 5 or the shuttle vehicle 6 on the lifting platform 2 drives along the driving surface of the shuttle vehicle driving-in track 5 or the driving surface of the excessive track 26 after receiving a wrong command, thereby avoiding the shuttle vehicle 6 from falling from the stereoscopic goods shelf 1 or the lifting platform 2 to the ground due to receiving a wrong command.

[0034] The profile of the large end 14 away from the small end 13 is arc-shaped, which can effectively reduce the influence of the A unit 3 on the goods handling of the lower layer.

[0035] As shown in Fig. 5, the B unit 4 is further included, which comprises a driving block 16 and a mounting base 17, and a collision block 11 is arranged at the edge of any one side of the larger end 14 of the rotating body 10, the driving block 16 of the B unit 4 is arranged corresponding to the collision block 11 and is mounted on the lifting platform 2 or each shuttle vehicle entering track 5 through the mounting base 17, that is, the driving block 16 is mounted on the side of the lifting platform 2 close to each shuttle vehicle entering track 5 relative to the collision block 11 through the mounting base 17, or the driving block 16 is mounted on the side of each shuttle vehicle entering track 5 close to the lifting platform 2 relative to the collision block 11 through the mounting base 17, in the process of the interface of the lifting platform 2 and each shuttle vehicle entering track 5 of the stereoscopic shelf 1 through the lifting mechanism, the driving blocks 16 of the two B units 4 are respectively in contact with the collision blocks 11 of the corresponding A units 3, and the corresponding rotating bodies 10 are driven to rotate around the bearing 19 until the upper end of the smaller end 13 of the corresponding rotating body 10 rotates below the running surface of the shuttle vehicle entering track 5 and the running surface of the overpass track 26; so as to avoid that after the overpass track 26 on the lifting platform 2 and the shuttle vehicle entering track 5 are interfaced, the rotating body 10 hinders the shuttle vehicle 6 from moving from the shuttle vehicle entering track 5 to the overpass track 26 on the lifting platform 2, or the rotating body 10 hinders the shuttle vehicle 6 from moving from the overpass track 26 on the lifting platform 2 to the shuttle vehicle entering track 5.

[0036] As shown in Fig. 6, the side of the fixed seat 9 and the rotating body 10 of the A unit 3 close to each other is provided with a magnet 18, and after the driving block 16 of the B unit 4 is separated from the collision block 11 on the rotating body 10, the attraction between the two magnets 18 can hinder the rotating body 10 from swinging under the action of inertia.

[0037] In the initial state, the A unit 3 on the A mounting beam 7 is in a vertical state, the A unit 3 on the B mounting beam 8 is in a vertical state, and the A unit 3 can avoid the shuttle vehicle 6 from falling from the end of the current shuttle vehicle entering track 5;

[0038] As shown in FIG. 1 and 7, a blocking method of a bidirectional blocking device for a stereoscopic warehouse lifting platform: when a shuttle 6 needs to go to an upper or lower shuttle entry track 5 for carrying work, the lifting platform 2 is lifted or lowered to the position of the current shuttle entry track 5 by the lifting mechanism, and during the docking process of the lifting platform 2 and the shuttle entry track 5, the driving block 16 in the B unit 4 on the B mounting beam 8 hits the impact block 11 of the A unit 3 on the A mounting beam 7, so that the A unit 3 on the A mounting beam 7 rotates around its bearing 19 until the top end of the A unit 3 on the A mounting beam 7 is lower than the running surface of the shuttle entry track 5 and the lifting surface of the lifting platform 2 in the docking state; at the same time, the driving block 16 in the B unit 4 on the A mounting beam 7 hits the impact block 11 of the A unit 3 on the B mounting beam 8, so that the A unit 3 on the B mounting beam 8 rotates around its bearing 19 until the top end of the A unit 3 on the B mounting beam 8 is lower than the running surface of the shuttle entry track 5 and the lifting surface of the lifting platform 2 in the docking state, so as to avoid the A unit 3 on the A mounting beam 7 and the B mounting beam 8 blocking the shuttle 6 from running on the current shuttle entry track 5 to the lifting platform 2 after docking; after docking is completed, when the A unit 3 and the B unit 4 are out of contact, the A unit 3 quickly rotates around the bearing 19 to the vertical state under the action of the magnet 18, and during the lifting process of the lifting platform 2 with the shuttle 6, the A unit 3 on the A mounting beam 7 is in the vertical state, and the A unit 3 can avoid the shuttle 6 from falling off the lifting platform 2.

[0039] The A unit 3 is also provided with a rotation speed detection device, which can detect the rotation amount of the rotation body 10 of the A unit 3 relative to the bearing 19 per second, and when the rotation speed detection device detects that the rotation amount of the rotation body 10 of the A unit 3 relative to the bearing 19 per second is too large, it indicates that the lifting speed of the lifting platform 2 is abnormal, and the lifting mechanism driving the lifting movement of the lifting platform 2 has a problem, for example, when the lifting platform 2 is at a high position, the lifting mechanism fails to cause the lifting platform 2 to do free fall, etc.; the lifting platform 2 is provided with an alarm device, and the rotation speed detection device is signal associated with the alarm device, and when the rotation amount detected by the rotation speed detection device is greater than a preset value, the rotation speed detection device triggers the alarm device to issue an alarm

[0040] The above is the first embodiment of the present application, in the first embodiment, although the magnets 18 are arranged on the side of the fixed seat 9 and the rotating body 10 of the A unit 3 close to each other, so as to solve the problem that the A unit 3 swings back and forth under the action of inertia after the A unit 3 and the B unit 4 are out of contact, but the goods stored on the stereoscopic shelf 1 are often changed, and the existence of the magnets 18 increases the degree of collision between the B unit 4 and the A unit 3 driven by the lifting platform 2, so as to cause the goods on the shuttle vehicle 6 carrying the goods on the lifting platform 2 to vibrate, and the above vibration occurs every time the lifting platform 2 rises or falls by one layer, if the goods on the shuttle vehicle 6 are fragile goods at this time, the above vibration will cause damage to the goods, in view of the above problem, the second embodiment of the present application is proposed.

[0041] As shown in FIGS. 8-9, the rotating shaft 20 is vertically arranged on the fixed seat 9, the bearing 19 coaxial with the rotating body 10 is slidingly sleeved on the rotating shaft 20, and the rotating body 10 can slide along the length direction of the rotating shaft 20 through the bearing 19 to adjust the interaction force between the two magnets 18.

[0042] The rotating shaft 20 is provided with a sliding adjustment groove, the locking bolt 23 is slidingly matched in the sliding adjustment groove, the axial limiting plate 21 is sleeved on the rotating shaft 20, the axial limiting plate 21 is located between the fixed seat 9 and the rotating body 10, the limiting surface of the axial limiting plate 21 is always in limiting contact with the side of the rotating body 10 close to the fixed seat 9, the limiting support 22 is arranged on the side of the axial limiting plate 21 away from the rotating body 10, one end of the locking bolt 23 passes through the sliding adjustment groove and is threadedly matched on the limiting support 22, the locking nut 24 is threadedly matched on the screw rod between the locking bolt 23 and the rotating shaft 20, and the thread cooperation between the locking nut 24 and the locking bolt 23 can lock the axial limiting plate 21 on the rotating shaft 20, so as to axially limit the rotating body 10 by the axial limiting plate 21.

[0043] In the second embodiment, the warehouse manager can adjust the position of the locking bolt 23 in the sliding adjustment groove according to the type of the goods currently stored on the stereoscopic shelf 1, change the distance between the two magnets 18 arranged on the side of the fixed seat 9 and the rotating body 10 of the A unit 3 close to each other, so as to adjust the mutual attraction between the two magnets 18, thereby reducing the degree of collision between the B unit 4 and the A unit 3 driven by the lifting platform 2, and within the adjustable range, the rotating body 10 always has a tendency to move towards the fixed seat 9 under the action of the mutual attraction between the two magnets 18.

[0044] Although the modification made by the second embodiment can make the interaction force between the two magnets in the A unit 3 change in size according to the lifting speed corresponding to the type of goods stored on the stereoscopic shelf 1, in the second embodiment, the lifting speed of the lifting platform 2 is the same in different cases such as when the lifting platform 2 is empty, or when the lifting platform 2 carries a shuttle 6 carrying no goods, or when the lifting platform 2 carries a shuttle 6 loaded with goods, and it is difficult to improve the operation efficiency of the warehouse, therefore the present scheme proposes a third embodiment,

[0045] The fixed seat 9 is vertically provided with a rotating shaft 20, the bearing 19 on the rotating body 10 is coaxially sleeved on the rotating shaft 20, and the rotating body 10 can slide along the length direction of the rotating shaft 20 through the bearing 19 to adjust the interaction force between the two magnets 18.

[0046] As shown in FIG. 10, the rotating shaft 20 is sleeved with an axial limiting plate 21, the axial limiting plate 21 is located between the fixed seat 10 and the rotating body 10, and the limiting surface of the axial limiting plate 21 is always in limiting contact with the side of the rotating body 10 close to the fixed seat 10, the fixed seat 9 is provided with an electric telescopic rod 25 corresponding to the axial limiting plate 21, and the telescopic end of the electric telescopic rod 25 is fixedly connected with the side of the axial limiting plate 21 away from the rotating body 10.

[0047] Within the telescopic range of the electric telescopic rod 25, the rotating body 10 always has a tendency to move towards the fixed seat 9 under the action of the mutual attraction between the two magnets 18.

[0048] The excessive track 26 on the lifting platform 2 is provided with a gravity sensor, which can identify the weight of the load on the excessive track 2, and is signal-associated with the electric telescopic rod 25, and the gravity sensor is provided with empty data, first gravity data and second gravity data corresponding to three conditions that the lifting platform 2 is empty, the shuttle 6 carrying no goods on the lifting platform 2 and the shuttle 6 carrying goods on the lifting platform 2, and the third gravity data can be adjusted according to the type of goods; when the lifting platform 2 receives a lifting command, if the gravity sensor does not detect data, it means that the lifting platform 2 is empty, and the gravity sensor controls the extension end of the electric telescopic rod 25 to the maximum length; if the gravity sensor detects the first gravity data, it means that the lifting platform 2 carries the shuttle 6 carrying no goods, and the gravity sensor controls the extension end of the electric telescopic rod 25 to the length that the B unit 4 has almost no collision force with the A unit 3 under the driving of the lifting platform 2; if the gravity sensor detects the second gravity data, it means that the lifting platform 2 carries the shuttle 6 carrying goods, and the gravity sensor controls the extension end of the electric telescopic rod 25 to the length that the B unit 4 has almost no collision force with the A unit 3 under the driving of the lifting platform 2.

[0049] The above is the preferred embodiment of the present application, it should be noted that for those skilled in the art, without departing from the principles of the present application, can also make several improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A bidirectional blocking device for a lifting platform in an automated warehouse, characterized in that: The system includes a three-dimensional rack (1), a lifting platform (2), travel tracks, and shuttle cars (6). The three-dimensional rack (1) has several sets of shuttle car entry tracks (5) evenly spaced from bottom to top. The lifting platform (2) can be raised and lowered to connect with the shuttle car entry tracks (5) on each layer. In the connected state, the shuttle cars (6) can travel from the shuttle car entry tracks (5) to the lifting platform (2), and the shuttle cars (6) can travel from the lifting platform (2) to the shuttle car entry tracks (5). The lifting platform (2) is close to the three-dimensional rack (1). An A mounting beam (7) is provided on one side of each shuttle car entering the track (5) near the lifting platform (2). A mounting beam (8) is provided on the lower part of each shuttle car entering the track (5) near the lifting platform (2). An A unit (3) and a B unit (4) are installed on the A mounting beam (7). An A unit (3) and a B unit (4) are installed on the B mounting beam (8). The A unit (3) on the A mounting beam (7) cooperates with the B unit (4) on the B mounting beam (8). The A unit (3) on the B mounting beam (8) cooperates with the B unit (4) on the A mounting beam (8). When the A unit (3) and B unit (4) that cooperate with each other are staggered in height, the A unit (3) on the A mounting beam (7) prevents the shuttle car (6) from sliding horizontally out of the lifting platform (2), and the A unit (3) on the B mounting beam (8) prevents the shuttle car (6) from sliding horizontally out of the shuttle car entering the track (5); When the cooperative unit A (3) and unit B (4) overlap in height, unit B (4) drives the cooperative unit A (3) to move, so that unit A (3) releases its function of preventing the shuttle car (6) from sliding out.

2. The bidirectional blocking device for an automated warehouse lifting platform according to claim 1, characterized in that: The A unit (3) includes a fixed base (9) and a vertically asymmetrical rotating body (10). The fixed base (9) is provided with a bearing (19). The rotating body (10) is rotatably fitted on 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 A unit (3) and the B unit (4) are staggered in height, the rotating body (10) always remains vertically upward.

3. A bidirectional blocking device for an automated warehouse lifting platform according to claim 2, characterized in that: The rotating body (10) includes a smaller, elongated end (13) above the bearing 19 and a larger, wider end (14) below the bearing 19. The smaller end (13) has a waist-shaped weight-reducing groove (15), and the larger end (14) is equipped with a counterweight (12). The combined effect of the weight-reducing groove (15) and the counterweight (12) enables the center of mass of the rotating body (10) to be located at the larger end (14) below the bearing 19.

4. A bidirectional blocking device for an automated warehouse lifting platform according to claim 2, characterized in that: The lifting platform (2) is provided with a transition track (26), which can be connected with each shuttle car entering the track (5). In the connected state, the travel surface of the shuttle car entering the track (5) is coplanar with the travel surface of the transition track (26).

5. A bidirectional blocking device for an automated warehouse lifting platform according to claim 4, characterized in that: When the mutually cooperating A unit (3) and B unit (4) are staggered in height, the top of the rotating body (10) mounted on the A mounting beam (7) is higher than the travel surface of the transition track (26), and the top of the rotating body (10) mounted on the B mounting beam (8) is higher than the travel surface of the shuttle entering the track (5).

6. A bidirectional blocking device for an automated warehouse lifting platform according to claim 1, characterized in that: The B unit (4) includes a drive block (16) and a mounting base (17). A collision block (11) is provided on either side of the larger end (14) of the rotating body (10). The drive block (16) of the rotating drive assembly is set corresponding to the collision block (11) and is installed on the lifting platform (2) or each shuttle car entry track (5) through the mounting base (17). During the process of the lifting platform (2) docking with each shuttle car entry track (5) of the three-dimensional rack (1) through the lifting mechanism, the drive block (16) of the rotating drive assembly contacts the collision block (11) and drives the rotating body (10) of the A unit (3) to rotate around the bearing 19 until the top of the rotating body (10) of each A unit (3) is lower than the travel surface of the transition track (26) or the travel surface of the shuttle car entry track (5).

7. A bidirectional blocking device for an automated warehouse lifting platform according to claim 1, characterized in that: Magnets (18) are provided on the side of the fixed base (9) of unit A (3) and the rotating body (10) that are close to each other. After the driving block (16) of unit B (4) separates from the collision block (11) on the rotating body (10), the attraction between the two magnets (18) can prevent the rotating body (10) from swinging under the action of inertia.

8. The blocking method of a bidirectional blocking device for an automated warehouse lifting platform according to claim 1, characterized in that: In the initial state, the A unit (3) on the B mounting beam (8) is in a vertical state, and the A unit (3) can prevent the shuttle car (6) from falling from the end of the current shuttle car entry track (5); when the shuttle car (6) needs to go to the upper or lower level shuttle car entry track (5) for transport work, the lifting platform (2) rises or falls to the position of docking with the current shuttle car (6) on the shuttle car entry track (5) through the lifting mechanism. During the docking process of the lifting platform (2) and the shuttle car entry track (5), the two B units (4) simultaneously drive the two A units (3) to rotate around themselves. The bearing 19 rotates until the tops of both A units (3) are lower than the travel surface of the shuttle car entering the track (5) and the travel surface of the transition track (26) on the lifting platform (2) in the docking state, thereby preventing the two A units (3) from blocking the shuttle car (6) from traveling from the current shuttle car entering the track (5) to the lifting platform (2) after docking; during the process of the lifting platform (2) carrying the shuttle car (6) up or down through the lifting mechanism, the A unit (3) on the A mounting beam (7) is in a vertical state, and the A unit (3) can prevent the shuttle car (6) from falling off the lifting platform (2).

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