High-efficiency lifting device for stacker

Abstract

The application discloses a high-efficiency lifting device for a stacker, and aims to provide a high-efficiency lifting device for a stacker, which can reduce the volume of the stacker, effectively improve the compactness of the stacker structure, reduce the space occupied by the stacker, effectively improve the lifting speed of forks and the like during non-working of the stacker. The high-efficiency lifting device for the stacker comprises an overhead stacker walking frame, a lifting intermediate transition frame arranged on the stacker walking frame and capable of lifting up and down, a frame lifting actuator for driving the lifting intermediate transition frame to lift up and down, a loading platform frame arranged on the lifting intermediate transition frame and capable of lifting up and down, forks arranged on the loading platform frame, and a chain connecting mechanism comprising an upper chain wheel and an upper chain engaged with the upper chain wheel, wherein the upper chain wheel is arranged on the top of the lifting intermediate transition frame, one end of the upper chain is fixed on the stacker walking frame, and the other end of the upper chain is fixed on the loading platform frame.

Description

Technical Field

[0001] This invention relates to a stacker crane, and more specifically to a high-efficiency lifting device for a stacker crane. Background Technology

[0002] Stacker cranes are the most important lifting and transporting equipment in automated warehouses (AS / RS), and are a hallmark of AS / RS. The main function of a stacker crane is to move back and forth within the aisles of the AS / RS, storing goods into racking compartments or retrieving goods from those compartments. Traditional stacker cranes use overhead tracks and ground tracks. The overhead tracks are located on the warehouse ceiling, and the ground tracks are located on the warehouse floor. The stacker crane's traveling frame moves between the overhead and ground tracks.

[0003] Traditional stacker cranes consist of a vertical fixed rail fixed to the crane's traveling frame, a loading platform frame that moves along the vertical fixed rail, and a loading platform frame lifting mechanism. The lower end of the vertical rail extends to near the ground rail, and the upper end extends to near the overhead rail. This results in traditional stacker cranes being large in size, requiring a significant amount of vertical space whether in use or idle. Summary of the Invention

[0004] The purpose of this invention is to provide a high-efficiency lifting device for stacker cranes that can reduce the size of the stacker crane, especially when the stacker crane is not in operation, effectively improve the compactness of the stacker crane structure, reduce the space occupied by the stacker crane, and at the same time effectively increase the lifting speed of the forks, thereby improving the working efficiency of the stacker crane.

[0005] The technical solution of this invention is:

[0006] A high-efficiency lifting device for a stacker crane, comprising:

[0007] The overhead stacker crane traveling frame;

[0008] The intermediate transition frame is raised and is mounted on the stacker crane's traveling frame, allowing it to be lifted up and down.

[0009] The frame lifting actuator drives the intermediate transition frame to move up and down.

[0010] The cargo platform frame is mounted on the intermediate lifting transition frame and can be raised and lowered.

[0011] Forks are mounted on the loading platform frame;

[0012] The chain connection mechanism includes an upper sprocket and an upper chain that meshes with the upper sprocket. The upper sprocket is located on the top of the lifting intermediate transition frame. One end of the upper chain is fixed to the stacker crane traveling frame, and the other end of the upper chain is fixed to the loading platform frame. Both ends of the upper chain are located below the upper sprocket.

[0013] Compared to existing stacker cranes where the loading platform frame moves up and down along a fixed vertical track, with the lower end of the track extending near the ground rail and the upper end near the overhead rail, resulting in a large stacker crane that requires significant vertical space both during operation and when idle, this solution utilizes a high-efficiency lifting device where the stacker crane's traveling frame is elevated. This elevated arrangement is located in the middle of the warehouse or shelving (i.e., the middle in the vertical direction). The intermediate lifting frame can move up and down within the stacker crane's traveling frame, allowing the loading platform frame to be positioned above the base of the traveling frame. The equipment can be moved to the underside of the stacker crane's traveling frame and then raised and lowered below it; or it can be moved from below the traveling frame to above the base frame of the traveling frame and then raised and lowered above it. This ensures that the stacker crane's efficient lifting equipment can access and store goods on the shelves located above and below the traveling frame. Furthermore, it reduces the size of the stacker crane, especially when it is not in operation. The intermediate lifting frame and loading platform frame can be suspended in the air along with the traveling frame, effectively improving the stacker crane's compact structure and reducing its space requirements.

[0014] On the other hand, the high-efficiency lifting equipment for the stacker crane in this solution can also effectively improve the lifting speed of the forks, thereby improving the working efficiency of the stacker crane. Specifically, the lifting operation of the forks is as follows: the frame lifting actuator drives the intermediate transition frame to lift up and down within the stacker crane's traveling frame. During the lifting process of the intermediate transition frame, the loading platform frame and forks will be driven up and down within the intermediate transition frame via a chain. That is, when the lifting actuator drives the intermediate transition frame to lift upward by H meters, the chain will simultaneously drive the loading platform frame and forks to lift upward by H meters along the intermediate transition frame. Thus, when the lifting actuator drives the intermediate transition frame to lift upward by H meters, the loading platform frame and forks will be lifted upward by 2H meters. Similarly, when the lifting actuator drives the intermediate transition frame to move downward by H meters, the loading platform frame and forks will move downward by 2H meters. This effectively improves the lifting speed of the forks, thereby improving the working efficiency of the stacker crane.

[0015] As a preferred embodiment, the chain connection mechanism also includes:

[0016] The lower sprocket is located at the bottom of the intermediate transition frame for lifting.

[0017] The lower chain meshes with the lower sprocket. One end of the lower chain is fixed to the stacker crane's traveling frame, and the other end is fixed to the loading platform frame. Both ends of the lower chain are located above the lower sprocket.

[0018] Preferably, the frame lifting actuator includes:

[0019] The lifting rack is vertically distributed and fixed to the intermediate lifting transition frame;

[0020] The lifting gear is mounted on the stacker crane's traveling frame and meshes with the lifting rack;

[0021] The lifting motor is mounted on the stacker crane's traveling frame and connected to the lifting gear. This ensures accurate lifting strokes by ensuring that the transmission is achieved through the meshing of the lifting gear and the lifting rack, preventing slippage.

[0022] Preferably, the intermediate lifting frame is equipped with vertically distributed lifting guide rails, and the stacker crane traveling frame is fixed with lifting sliders that cooperate with the lifting guide rails. This ensures that the intermediate lifting frame can be raised and lowered stably.

[0023] Preferably, the intermediate transition frame is also equipped with a vertical guide rail, and a frame slider that cooperates with the vertical guide rail is fixed on the loading platform frame to allow the loading platform frame to rise and fall along the vertical guide rail. This ensures that the loading platform frame can rise and fall stably.

[0024] Preferably, there are two intermediate lifting transition frames, which are vertically distributed and parallel to each other, and the loading platform frame is located between the two intermediate lifting transition frames.

[0025] Preferably, the stacker crane traveling frame travels along the overhead track of the stacker crane. The stacker crane traveling frame includes a base frame, and the forks are telescopic forks. When the telescopic forks are in the retracted state, the loading platform frame can move from above the base frame of the stacker crane traveling frame to below the stacker crane traveling frame, or from below the stacker crane traveling frame to above the base frame of the stacker crane traveling frame.

[0026] Preferably, a fork anti-collision locking device is also included, which includes:

[0027] The triggering component is rotatably connected to the overhead track. The triggering component includes an upper stop and a lower stop. The upper stop is located above the overhead track, and the lower stop is located below the overhead track.

[0028] The limiting component is connected to the overhead track, and the triggering component presses against the limiting component under its own weight or the action of the elastic component.

[0029] A vertical rack is fixed to the intermediate lifting transition frame;

[0030] Guide components are fixed to the stacker crane's traveling frame;

[0031] The translation bracket moves along the guide member;

[0032] A locking tooth is provided on a translation bracket facing the vertical rack, and the locking tooth can be inserted into the tooth groove of the vertical rack;

[0033] The first spring causes the translation bracket to move towards the lower stop bar and approach it under the action of the first spring.

[0034] During the process of the loading platform frame descending from above the base frame to below the stacker crane traveling frame, if the telescopic forks are in the extended state, the telescopic forks will abut against the upper stop bar and drive the trigger component to rotate, so that the lower stop bar abuts against the translation bracket and pushes the translation bracket to move in the direction of the vertical rack, thereby causing the locking teeth to insert into the groove of the vertical rack.

[0035] During the process of lifting the loading platform frame from below the stacker crane traveling frame to above the base frame, if the telescopic forks are in the extended state, the telescopic forks will abut against the lower stop bar and drive the trigger component to rotate, so that the lower stop bar abuts against the translation bracket and pushes the translation bracket to move in the direction of the vertical rack, thereby causing the locking teeth to insert into the groove of the vertical rack.

[0036] During the descent of the loading platform frame from above the underframe to below the stacker crane's traveling frame, or the lifting of the loading platform frame from below the stacker crane's traveling frame to above the underframe, the telescopic forks need to be in a retracted state. However, in actual operation, operators may mistakenly perform the above operation with the telescopic forks extended, causing the telescopic forks to collide with the stacker crane's traveling frame or the overhead rails. To solve this problem, this solution specifically incorporates a fork anti-collision locking device. Specifically,

[0037] During the process of the loading platform frame descending from above the base frame to below the stacker crane traveling frame, if the telescopic forks are in the extended state, since the upper stop bar is located higher than the overhead rail, the telescopic forks will first abut against the upper stop bar. The telescopic forks will drive the trigger component to rotate, causing the lower stop bar to abut against the translation bracket and push the translation bracket to move in the direction of the vertical rack. This will cause the locking teeth to insert into the groove of the vertical rack, thereby locking the lifting intermediate transition frame and preventing the lifting intermediate transition frame from rising or falling. This will prevent the telescopic forks from colliding with the stacker crane traveling frame or the overhead rail.

[0038] Similarly, during the lifting of the loading platform frame from below the stacker crane's traveling frame to above the underframe, if the telescopic forks are in the extended state, since the lower stop bar is lower than the overhead track, the telescopic forks will first abut against the lower stop bar. The telescopic forks will then drive the trigger component to rotate, causing the lower stop bar to abut against the translation bracket and push the translation bracket to move towards the vertical rack. This will cause the locking teeth to insert into the grooves of the vertical rack, locking the intermediate transition frame and preventing it from rising or falling. This will prevent the telescopic forks from colliding with the stacker crane's traveling frame or the overhead track.

[0039] Preferably, the stacker crane's traveling frame is provided with a loading platform frame passage, through which the loading platform frame can pass from top to bottom or bottom to top.

[0040] The beneficial effects of this invention are: it can reduce the size of the stacker, especially when the stacker is not working, it can effectively improve the compactness of the stacker structure and reduce the space occupied by the stacker; at the same time, it can also effectively increase the lifting speed of the forks, thereby improving the working efficiency of the stacker. Attached Figure Description

[0041] Figure 1 This is a front view of a high-efficiency lifting device for a stacker crane, according to a specific embodiment of the present invention.

[0042] Figure 2 This is a side view of a high-efficiency lifting device for a stacker crane, according to a specific embodiment of the present invention.

[0043] Figure 3 This is a three-dimensional structural schematic diagram of the stacker crane traveling frame of a high-efficiency lifting device for a stacker crane, which is a specific embodiment of the present invention.

[0044] Figure 4 This is a top view of the stacker crane traveling frame of a high-efficiency lifting device for a stacker crane, which is a specific embodiment of the present invention.

[0045] Figure 5 This is a three-dimensional structural diagram of a lifting intermediate transition frame for a high-efficiency lifting device for a stacker crane, according to a specific embodiment of the present invention.

[0046] Figure 6 This is a top view of the loading platform frame and forks of a high-efficiency lifting device for a stacker crane, which is a specific embodiment of the present invention.

[0047] Figure 7 This is a side view of a high-efficiency lifting device for a stacker crane, which is a specific embodiment of the present invention.

[0048] Figure 8 yes Figure 7 A magnified view of a portion of point A in the middle.

[0049] In the picture:

[0050] Aerial track 1;

[0051] Stacker crane traveling frame 2, base frame 2.0, lifting slider 2.1, loading platform frame access 2.2;

[0052] The frame lifting actuator 3 includes a lifting rack 3.1, a lifting motor 3.2, and a lifting gear 3.3.

[0053] Raise the intermediate transition frame 4, raise the guide rail 4.1, and raise the vertical guide rail 4.2.

[0054] Cargo platform frame 5, frame slider 5.1;

[0055] Forklift 6;

[0056] Chain connection mechanism 7, upper sprocket 7.1, upper chain 7.2, lower chain 7.3, lower sprocket 7.4;

[0057] Trigger assembly 9, upper stop lever 9.1, lower stop lever 9.2, swing arm 9.3;

[0058] Vertical rack 10;

[0059] Translation bracket 11, trigger plate 11.1, mounting plate 11.2, connecting guide rod 11.3, locking toothed plate 11.4, sliding guide rod 11.5;

[0060] Guide component 12;

[0061] Locking tooth 13;

[0062] First spring 14;

[0063] Limiting component 15;

[0064] Second spring 16. Detailed Implementation

[0065] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0066] Specific Implementation Example 1, such as Figure 1 - Figure 6 As shown, a high-efficiency lifting device for a stacker crane includes a stacker crane traveling frame 2, a lifting intermediate transition frame 4, a frame lifting actuator 3, a loading platform frame 5, forks 6, and a chain connection mechanism 7.

[0067] The stacker crane's traveling frame 2 is arranged in an overhead configuration. The stacker crane's traveling frame includes a base frame 2.0. Specifically, the stacker crane's track is an overhead track 1, which is arranged overhead in the middle of the warehouse or racking (i.e., the middle of the warehouse or racking in the vertical direction). The stacker crane's traveling frame 2 travels along the stacker crane's overhead track 1 (the base frame and the overhead track are at the same height), thus making the stacker crane's traveling frame an overhead configuration.

[0068] The intermediate transition frame 4 is mounted on the stacker crane's traveling frame 2 and can move up and down. The frame lifting actuator 3 drives the intermediate transition frame to move up and down. The loading platform frame 5 is mounted on the intermediate transition frame and can move up and down. The stacker crane's traveling frame has a loading platform frame opening 2.2. The loading platform frame opening is located on the underframe. The loading platform frame can pass through the loading platform frame opening from top to bottom or bottom to top. The intermediate transition frame passes through the loading platform frame opening.

[0069] The chain connection mechanism 7 includes an upper sprocket 7.1 and an upper chain 7.2 that meshes with the upper sprocket. The upper sprocket is located on top of the lifting intermediate transition frame. One end of the upper chain is fixed to the stacker crane traveling frame, and the other end of the upper chain is fixed to the loading platform frame, with both ends of the upper chain located below the upper sprocket.

[0070] Forks 6 are mounted on the loading platform frame. In this embodiment, the forks are telescopic forks. The telescopic forks have a retracted state and an extended state. The retracted state of the telescopic forks refers to the state where the telescopic forks are fully retracted. The extended state of the telescopic forks refers to the state where the telescopic forks are fully extended. When the telescopic forks are in the retracted state, the loading platform frame can move from above the underframe of the stacker crane's traveling frame to below the stacker crane's traveling frame, or from below the stacker crane's traveling frame to above the underframe of the stacker crane's traveling frame.

[0071] Compared to existing stacker cranes where the loading platform frame moves up and down along a fixed vertical track, with the lower end of the track extending near the ground rail and the upper end near the overhead rail, resulting in a large traditional stacker crane that requires significant vertical space both during operation and when idle, this embodiment's high-efficiency lifting device features an elevated stacker crane traveling frame positioned in the middle of the warehouse or shelving (i.e., the middle in the vertical direction). This allows the intermediate transition frame to move up and down within the stacker crane traveling frame, enabling the loading platform frame to be mounted on the base of the stacker crane traveling frame. The lifting platform can be moved to the underside of the stacker crane's traveling frame and raised and lowered below it; or it can be moved from below the traveling frame to above the base frame and raised and lowered above it. This ensures that the stacker crane's efficient lifting equipment can access goods on the shelves located above and below the traveling frame. Furthermore, it reduces the stacker crane's size, especially when it is not in operation, allowing the intermediate lifting frame and loading platform frame to be suspended above the traveling frame, thus effectively improving the stacker crane's compact structure and reducing its space requirements.

[0072] On the other hand, the high-efficiency lifting equipment for the stacker crane in this solution can also effectively improve the lifting speed of the forks, thereby improving the working efficiency of the stacker crane. Specifically, the lifting operation of the forks is as follows: the frame lifting actuator drives the intermediate transition frame to lift up and down within the stacker crane's traveling frame. During the lifting process of the intermediate transition frame, the loading platform frame and forks will be driven up and down within the intermediate transition frame via a chain. That is, when the lifting actuator drives the intermediate transition frame to lift upward by H meters, the chain will simultaneously drive the loading platform frame and forks to lift upward by H meters along the intermediate transition frame. Thus, when the lifting actuator drives the intermediate transition frame to lift upward by H meters, the loading platform frame and forks will be lifted upward by 2H meters. Similarly, when the lifting actuator drives the intermediate transition frame to move downward by H meters, the loading platform frame and forks will move downward by 2H meters. This effectively improves the lifting speed of the forks, thereby improving the working efficiency of the stacker crane.

[0073] Specifically, such as Figure 1 - Figure 6 As shown, there are two intermediate lifting transition frames 4, which are vertically distributed and parallel to each other. Each of the two intermediate lifting transition frames is equipped with a vertically distributed lifting guide rail 4.1. A lifting slider 2.1, which mates with the lifting guide rails on the two intermediate lifting transition frames, is fixed on the stacker crane's traveling frame. The lifting guide rails and corresponding lifting sliders cooperate to allow the intermediate lifting transition frames to move up and down within the stacker crane's traveling frame, ensuring stable lifting and lowering of the intermediate lifting transition frames.

[0074] The loading platform frame 5 is located between two intermediate lifting frames 4. A vertical guide rail 4.2 is also provided on the intermediate lifting frame. A frame slider 5.1, which cooperates with the vertical guide rail, is fixed on the loading platform frame to ensure stable lifting and lowering of the loading platform frame.

[0075] The chain connection mechanism 7 corresponds one-to-one with the lifting intermediate transition frame 4. The upper sprocket is located at the top of the corresponding lifting intermediate transition frame. The chain connection mechanism also includes a lower sprocket 7.4 and a lower chain 7.3 that meshes with the lower sprocket. The lower sprocket is located at the bottom of the corresponding lifting intermediate transition frame, and one end of the lower chain is fixed to the stacker crane traveling frame, while the other end of the lower chain is fixed to the loading platform frame. In this embodiment, both ends of the lower chain are located above the lower sprocket.

[0076] The frame lifting actuator corresponds one-to-one with the intermediate lifting frame. The frame lifting actuator 3 includes a lifting rack 3.1, a lifting gear 3.3, and a lifting motor 3.2. The lifting racks are vertically distributed and fixed to their respective intermediate lifting frames. The lifting gears are mounted on the stacker crane's traveling frame and mesh with their corresponding lifting racks. The lifting motors are mounted on the stacker crane's traveling frame and connected to their corresponding lifting gears. Thus, through the meshing transmission between the lifting gears and lifting racks, slippage is prevented, ensuring accurate lifting stroke of the intermediate lifting frames.

[0077] In this second specific embodiment, the remaining structure is the same as in the first specific embodiment, except that...

[0078] like Figure 7 , Figure 8 As shown, a high-efficiency lifting device for a stacker crane also includes a fork anti-collision locking device. The fork anti-collision locking device includes a trigger assembly 9, a vertical rack 10, a guide member 12, a translation bracket 11, locking teeth 13, a first spring 14, and a limiting member 15. The vertical rack 10 is fixed to the intermediate lifting frame. The lower end of the vertical rack approaches or extends to the bottom of the intermediate lifting frame, and the upper end of the vertical rack approaches or extends to the top of the intermediate lifting frame.

[0079] The trigger assembly 9 is rotatably connected to the overhead track. The trigger assembly includes a swing arm 9.3, an upper stop 9.1, and a lower stop 9.2. The swing arm is rotatably connected to the overhead track. The rotation axis of the swing arm is parallel to the overhead track. The upper stop and the lower stop are both mounted on the swing arm. The upper stop, lower stop, and overhead track are all parallel. In this embodiment, the upper stop, lower stop, and overhead track are of the same length. The upper stop 9.1 is positioned higher than the overhead track. The lower stop 9.2 is positioned lower than the overhead track.

[0080] The limiting member 15 is connected to the overhead track. The triggering component abuts against the limiting member under its own weight or the action of the elastic member; in this embodiment, the triggering component abuts against the limiting member under its own weight. The limiting member is located below the overhead track and below the swing arm.

[0081] The guide component 12 is fixed on the stacker crane traveling frame. In this embodiment, the guide component is provided with a horizontal guide hole, and the axis of the horizontal guide hole is perpendicular to the overhead track.

[0082] The translation bracket 11 translates along the guide member. In this embodiment, the translation bracket includes a trigger plate 11.1 and a mounting plate 11.2 that are parallel to each other, and the guide member is located between the trigger plate and the mounting plate. The trigger plate and the mounting plate are connected by a connecting guide rod 11.3. The trigger plate is vertically distributed. The trigger plate is parallel to the lower stop rod and is close to the lower stop rod. The vertical rack, the guide member, and the translation bracket are all located on the same side of the lower stop rod. The connecting guide rod is slidably disposed in the horizontal guide hole. Under the action of the first spring 14, the translation bracket moves towards the lower stop rod and approaches the lower stop rod. Specifically, the first spring is sleeved on the connecting guide rod and is located between the trigger plate and the guide member.

[0083] Locking teeth 13 are disposed on the translation bracket facing the vertical rack; specifically, the locking teeth are disposed on the mounting plate facing the vertical rack. In this embodiment, there are multiple locking teeth, which are distributed equidistantly from top to bottom. The locking teeth can be inserted into the tooth grooves of the vertical rack. The tooth grooves of the vertical rack are rectangular grooves, and the locking teeth are rectangular protruding teeth.

[0084] During the process of the loading platform frame descending from above the base frame to below the stacker crane traveling frame, if the telescopic forks are in the extended state, the telescopic forks will abut against the upper stop bar and drive the trigger component to rotate, so that the lower stop bar abuts against the translation bracket and pushes the translation bracket to move in the direction of the vertical rack, thereby causing the locking teeth to insert into the groove of the vertical rack.

[0085] During the process of lifting the loading platform frame from below the stacker crane traveling frame to above the base frame, if the telescopic forks are in the extended state, the telescopic forks will abut against the lower stop bar and drive the trigger component to rotate, so that the lower stop bar abuts against the translation bracket and pushes the translation bracket to move in the direction of the vertical rack, thereby causing the locking teeth to insert into the groove of the vertical rack.

[0086] During the descent of the loading platform frame from above the underframe to below the stacker crane's traveling frame, or the lifting of the loading platform frame from below the stacker crane's traveling frame to above the underframe, the telescopic forks need to be in a retracted state. However, in actual operation, operators may mistakenly perform the above operation with the telescopic forks extended, causing the telescopic forks to collide with the stacker crane's traveling frame or the overhead rails. To solve this problem, this solution specifically incorporates a fork anti-collision locking device. Specifically,

[0087] During the descent of the loading platform frame from above the underframe to below the stacker crane's traveling frame, if the telescopic forks are extended, the upper stop bar, being higher than the overhead track, will first abut against it. This will cause the telescopic forks to rotate, rotating the trigger assembly and causing the lower stop bar to press against the trigger plate of the translation bracket, pushing the translation bracket towards the vertical rack. This engages the locking teeth in the grooves of the vertical rack, locking the intermediate lifting frame and preventing it from rising or falling. This avoids collisions between the telescopic forks and the stacker crane's traveling frame or the overhead track. Once the intermediate lifting frame is locked, the operator can retract the telescopic forks. When retracted, the forks separate from the upper stop bar. At this point, the translation bracket, under the action of the first spring, moves downwards away from the vertical rack, separating the locking teeth from the grooves of the vertical rack. After this, the intermediate lifting frame can then rise and fall smoothly.

[0088] Similarly, during the lifting of the loading platform frame from below the stacker crane's traveling frame to above the underframe, if the telescopic forks are extended, since the lower stop is lower than the overhead track, the telescopic forks will first abut against the lower stop. The telescopic forks will then rotate the trigger assembly, causing the lower stop to press against the trigger plate of the translation bracket and push the translation bracket towards the vertical rack. This allows the locking teeth to engage with the grooves of the vertical rack, locking the intermediate lifting frame and preventing it from rising or falling. This avoids collisions between the telescopic forks and the stacker crane's traveling frame or the overhead track. Once the intermediate lifting frame is locked, the operator can retract the telescopic forks. When the telescopic forks are retracted, they separate from the upper stop. At this point, the translation bracket, under the action of the first spring, moves downwards away from the vertical rack, causing the locking teeth to separate from the grooves of the vertical rack. After this, the intermediate lifting frame can then rise and fall smoothly.

[0089] Further, such as Figure 8As shown, the fork anti-collision locking device also includes a second spring 16. The translation bracket also includes a locking tooth plate 11.4 and a tooth plate guide hole. The locking tooth 13 is disposed on the locking tooth plate, and the locking tooth plate is parallel to the mounting plate. The tooth plate guide hole is disposed on the mounting plate. The tooth plate guide hole is horizontally distributed. The locking tooth plate is provided with a sliding guide rod 11.5 that mates with the tooth plate guide hole. The sliding guide rod is parallel to the connecting guide rod. The end of the sliding guide rod is provided with a stop. The stop and the locking tooth plate are located on opposite sides of the mounting plate. The guide member is provided with a sliding guide rod through-hole. The sliding guide rod can pass through the sliding guide rod through-hole. The locking tooth plate moves in the direction of the vertical rack under the action of the second spring. Specifically, the second spring is sleeved on the sliding guide rod and is located between the locking tooth plate and the mounting plate. During the movement of the translation bracket towards the vertical rack, when the locking tooth is misaligned with the groove of the vertical rack and cannot be inserted into the groove of the vertical rack, the locking tooth will abut against the protruding tooth of the vertical rack. Subsequently, during the raising or lowering of the intermediate transition frame, the translation bracket compresses the second spring until the locking tooth is aligned with the groove of the vertical rack. At this point, the locking tooth is inserted into the groove of the vertical rack under the action of the second spring.

[0090] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, alterations, and equivalent transformations made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A high-efficiency lifting device for a stacker crane, characterized in that, include: The overhead stacker crane traveling frame, including the base frame, travels along the overhead track. The intermediate transition frame is raised, mounted on the stacker crane's traveling frame, and can be lifted up and down. The frame lifting actuator drives the intermediate transition frame to move up and down. The cargo platform frame is located on the intermediate lifting transition frame and can be raised and lowered. Forks, mounted on the loading platform frame, are telescopic forks; The chain connection mechanism includes an upper sprocket and an upper chain that meshes with the upper sprocket. The upper sprocket is located on the top of the lifting intermediate transition frame. One end of the upper chain is fixed to the stacker crane traveling frame, and the other end of the upper chain is fixed to the loading platform frame. Both ends of the upper chain are located below the upper sprocket. Fork anti-collision locking device, including: Limiting components are connected to the overhead track; The triggering component is rotatably connected to the overhead track. Under the action of the elastic element, it abuts against the limiting element. It includes an upper stop bar and a lower stop bar. The upper stop bar is higher than the overhead track, and the lower stop bar is lower than the overhead track. A vertical rack is installed on the intermediate transition frame for lifting; Guide components are mounted on the stacker crane's traveling frame; The translation bracket moves along the guide member and moves towards the lower stop bar under the action of the first spring. A locking tooth is provided on a translational bracket facing the vertical rack, and the locking tooth can be inserted into the tooth groove of the vertical rack.

2. The high-efficiency lifting device for a stacker crane according to claim 1, characterized in that, The chain connection mechanism further includes: The lower sprocket is located at the bottom of the intermediate transition frame for lifting. The lower chain meshes with the lower sprocket. One end of the lower chain is fixed to the stacker crane's traveling frame, and the other end is fixed to the loading platform frame. Both ends of the lower chain are located above the lower sprocket.

3. The high-efficiency lifting device for a stacker crane according to claim 1, characterized in that, The frame lifting actuator includes: The lifting rack is vertically distributed and fixed to the intermediate lifting transition frame; The lifting gear is mounted on the stacker crane's traveling frame and meshes with the lifting rack; The lifting motor is mounted on the stacker crane's traveling frame and connected to the lifting gear.

4. A high-efficiency lifting device for a stacker crane according to claim 1, 2, or 3, characterized in that, The intermediate lifting frame is provided with vertically distributed lifting guide rails, and the stacker crane traveling frame is fixed with lifting sliders that cooperate with the lifting guide rails.

5. The high-efficiency lifting device for a stacker crane according to claim 4, characterized in that, The intermediate lifting frame is also equipped with a vertical guide rail, and the loading platform frame is fixed with a frame slider that cooperates with the vertical guide rail, so that the loading platform frame can be raised and lowered along the vertical guide rail.

6. A high-efficiency lifting device for a stacker crane according to claim 1, 2, or 3, characterized in that, The lifting intermediate transition frame consists of two frames, which are vertically distributed and parallel to each other.

7. The high-efficiency lifting device for a stacker crane according to claim 6, characterized in that, The cargo platform frame is located between two intermediate lifting transition frames.

8. A high-efficiency lifting device for a stacker crane according to claim 1, 2, or 3, characterized in that, During the process of the loading platform frame descending from above the base frame to below the stacker crane traveling frame, if the telescopic forks are in the extended state, the telescopic forks will press against the upper stop bar and drive the trigger component to rotate. The lower stop bar will push the translation bracket to move, so that the locking teeth will insert into the groove of the vertical rack.

9. A high-efficiency lifting device for a stacker crane according to claim 8, characterized in that, During the process of lifting the loading platform frame from below the stacker crane traveling frame to above the base frame, if the telescopic forks are in the extended state, the telescopic forks will abut against the lower stop bar and drive the trigger component to rotate. The lower stop bar pushes the translation bracket to move, so that the locking teeth are inserted into the groove of the vertical rack.

10. A high-efficiency lifting device for a stacker crane according to claim 1, 2, or 3, characterized in that, The stacker crane's traveling frame is provided with a loading platform frame passage, through which the loading platform frame can pass from top to bottom or bottom to top.

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