Stacker stop device

Abstract

The utility model relates to automatic logistics warehousing technical field, concretely relates to a kind of stacker stop device, comprising: support subassembly, it includes bottom plate, the bottom plate is connected with vertical plate, the vertical plate is connected with top plate, the top plate and the bottom plate are all set up mounting hole;Execution subassembly, it includes execution rod, execution rod one end is rack end, between two the mounting hole is provided with rotating shaft, the rotating shaft is installed with gear, the execution rod is equipped with elastic member on;Stop component, it includes stop frame, the contact energy-absorbing piece is installed on the stop frame, further including the impact seat being set on ground;Power part, it is used to drive the execution rod movement, by above setting, the flexible switching between stop device in stop state and release state is realized, movement transmission is continuous and positioning is accurate, effectively improve the accuracy and response speed of stop device position control, ensure the operation stability of stop device.

Description

Technical Field

[0001] This utility model relates to a stacker crane stop device, belonging to the field of automated logistics and warehousing technology. Background Technology

[0002] In the field of automated logistics warehousing, automated storage and retrieval systems (AS / RS) have been widely used. Stacker cranes, as the core handling equipment, operate at high speeds in the aisles. To prevent stacker cranes from malfunctioning and running out of control in the aisles, fixed stoppers are usually installed at the end of the aisles. These stoppers are generally fixed to the ground by rigid supports. When the stacker cranes collide with the ground, they rely on their own structure to stop the stacker cranes from moving forward.

[0003] However, in practice, it has been found that existing stop mechanisms have significant drawbacks. First, when in the working position, they completely block the stacker crane's path out of the aisle. If the stacker crane malfunctions and requires repair, maintenance personnel must enter the narrow aisle space to work. The aisle is flanked by racks on both sides, making space extremely limited. This not only leads to extremely inconvenient and inefficient maintenance operations but also poses a serious threat to the personal safety of maintenance personnel. Second, some existing technologies also include movable stop mechanisms, such as those using articulated linkages to achieve the swing of the stop mechanism. However, these mechanisms have dead points during transmission, which may lead to discontinuous movement or jamming. The gaps at each hinge point accumulate to form significant transmission errors, resulting in inaccurate final stopping positions of the stopper. This can easily lead to incomplete release or incomplete reset, potentially causing the stacker crane to collide with other components or even run off the aisle. Furthermore, the friction and wear at the hinge points are severe, requiring frequent adjustments and maintenance, increasing operating costs. Moreover, when traditional stoppers are impacted by stacker cranes, the enormous impact force can be directly transmitted to the entire mechanism through the transmission components, potentially reducing transmission accuracy and even damaging the entire mechanism due to the impact. Therefore, researching a new type of stacker crane stopper is of great practical significance. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a stacker crane stopping device.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A stacker crane stopping device includes: a support assembly, which includes a base plate set on the ground, an upright plate connected to the upper surface of the base plate, a top plate connected to the upper surface of the upright plate, mounting holes being provided opposite to the top plate and the base plate, a fixing seat being provided on the upper surface of the base plate, and linear bearings being installed on both the fixing seat and the upright plate.

[0006] An actuation component includes an actuating rod passing through two linear bearings. One end of the actuating rod extending to the region between the top plate and the bottom plate is a rack end. A rotating shaft is rotatably disposed between the two mounting holes. A gear that meshes with the rack end is fixedly mounted on the rotating shaft. An elastic element is sleeved on the actuating rod. The elastic element is located between the fixed seat and the upright plate.

[0007] The blocking assembly includes a blocking frame fixed on the rotating shaft and rotating synchronously with the rotating shaft, a contact energy-absorbing element installed on the blocking frame, and an impact seat disposed on the ground. When in the blocking state, the blocking frame abuts against the impact seat.

[0008] The power unit drives the actuator to switch the stop device between a stopped state and a released state.

[0009] Furthermore, it also includes a position detection component for detecting the rotation angle of the rotating shaft, which includes a sensing trigger piece disposed on the rotating shaft, and two sensing elements disposed at predetermined angular intervals on the upper surface of the top plate, the sensing elements being used to monitor the position of the sensing trigger piece.

[0010] Furthermore, an anti-rotation seat is also provided on the base plate. The anti-rotation seat is located on the side of the fixed seat away from the upright plate. The anti-rotation seat abuts against the actuator rod. The abutment position between the actuator rod and the anti-rotation seat is flattened into an anti-rotation plane.

[0011] Furthermore, the contact energy-absorbing element is a hydraulic damper.

[0012] Furthermore, the stop frame includes a back plate, one side of which is provided with an energy-absorbing mounting part for mounting the contact energy-absorbing component, and the other side is provided with a rotational stabilizing part for connecting the rotating shaft. Both the energy-absorbing mounting part and the rotational stabilizing part are square frame structures, and there is a preset distance between them. A connecting horizontal plate is provided between the energy-absorbing mounting part and the rotational stabilizing part. The connecting horizontal plate is perpendicular to the back plate, one end of the connecting horizontal plate is connected to the side wall of the rotational stabilizing part, and the other end is connected to the side wall of the energy-absorbing mounting part.

[0013] Furthermore, the distance from the front end face of the energy-absorbing mounting part to the back plate is equal to the distance from the rotationally stable part to the back plate;

[0014] The relationship between the width K1 of the energy-absorbing mounting part, the width K2 of the rotating steady-state part, and the distance K3 between the energy-absorbing mounting part and the rotating steady-state part satisfies K1:K2:K3=(1.5-1.8):(1.2-1.4):1.

[0015] Furthermore, the energy-absorbing mounting part is a square frame structure with openings at the top and bottom, and the rotational stabilization part is a closed box-type square frame structure; the two side walls of the energy-absorbing mounting part extend downward and are connected to impact blocks. In the blocking state, the impact blocks abut against the impact seat. The impact blocks are connected to the back of the energy-absorbing mounting part and have a preset gap with the back plate.

[0016] Furthermore, the distance K4 between the impact block and the back plate is 0.15-0.35 times the distance K3 between the energy-absorbing mounting part and the rotational steady-state part.

[0017] Furthermore, the actuator is also provided with a clamping block, which is located between the elastic element and the fixed seat. The elastic element is a compression spring, one end of which abuts against the vertical plate and the other end of which abuts against the clamping block.

[0018] Furthermore, bearing seats are installed at the mounting holes on the horizontal plate and the base plate, and the two ends of the rotating shaft are respectively inserted into the corresponding bearing seats.

[0019] The beneficial effects of this utility model are as follows: First, through the coordinated cooperation between various components, this application achieves flexible switching between the blocking and releasing states of the stopping device, ensuring rapid and safe transfer of the stacker crane during maintenance. This solves the problem that fixed stopping devices cannot be moved, requiring manual maintenance in narrow aisles when the stacker crane malfunctions, resulting in low maintenance efficiency and poor safety. Second, the support assembly forms a stable installation foundation through the base plate, vertical plate, and top plate, while the linear bearing ensures the linear motion accuracy of the actuator, and the elastic element provides automatic reset force, ensuring that the stopping device can stably remain in the blocking state without the power unit's drive, effectively reducing the operating frequency of the power unit and extending the service life of the elastic element and the power unit. Thirdly... This application converts linear motion into rotary motion by meshing a rack and pinion with a gear. Compared to the existing method of using articulated linkage transmission, the rack and pinion meshing transmission method has a compact structure, reduces the number of parts and space occupied, and provides continuous motion transmission and precise positioning. This effectively improves the accuracy and response speed of the stop device's position control, ensures the operational stability of the stop device, and solves the problems of excessive motion error caused by dead points and friction at multiple articulated points in articulated linkage transmission, which leads to incomplete release and stacker crane collisions, as well as the need for frequent adjustments and maintenance. Finally, the stop assembly, with its independently set stop frame and impact seat, can effectively absorb the impact energy from the stacker crane when stopped, effectively preventing the stacker crane from accidentally rushing out of the aisle. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the stop device provided in Embodiment 1 of this utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the stop device excluding the power unit provided in Embodiment 1 of this utility model;

[0022] Figure 3 This is a side view of the stop device excluding the power unit provided in Embodiment 1 of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the actuator provided in Embodiment 1 of this utility model;

[0024] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0025] Figure 6 This is a schematic diagram of the assembly structure of the stop frame provided in Embodiment 1 of this utility model;

[0026] Figure 7 This is another perspective schematic diagram of the stop frame assembly structure provided in Embodiment 1 of this utility model.

[0027] Reference numerals: 1. Base plate; 2. Vertical plate; 3. Top plate; 4. Fixed seat; 5. Linear bearing; 6. Actuating rod; 61. Anti-rotation plane; 7. Rack end; 8. Rotating shaft; 9. Stop frame; 91. Back plate; 92. Energy-absorbing mounting part; 93. Rotational stabilizing part; 94. Connecting horizontal plate; 95. Impact block; 10. Gear; 11. Elastic element; 12. Contact energy-absorbing element; 13. Impact seat; 14. Power unit; 15. Induction trigger plate; 16. Induction sensor; 17. Anti-rotation seat; 18. Clamping block; 19. Bearing seat. Detailed Implementation

[0028] The specific embodiments of this utility model are described in detail below. This utility model can be implemented in many ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used is for describing particular embodiments only and is not intended to limit the scope of this invention.

[0030] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Example 1

[0033] like Figure 1-3 As shown, this utility model provides a stacker crane stopping device, including: a support assembly, which includes a base plate 1 set on the ground, an upright plate 2 connected to the upper surface of the base plate 1, a top plate 3 connected to the upper end of the upright plate 2, mounting holes being provided on both the top plate 3 and the base plate 1, a fixing seat 4 being provided on the upper surface of the base plate 1, and linear bearings 5 ​​being installed on both the fixing seat 4 and the upright plate 2. The base plate 1, the upright plate 2 and the top plate 3 are all fixed into an integral structure by welding. The base plate 1 is fixed to the ground by expansion bolts, and the fixing seat 4 is fixed to the upper surface of the base plate 1 by welding or screwing.

[0034] An actuation component includes an actuating rod 6 passing through two linear bearings 5. One end of the actuating rod 6 extending into the region between the top plate 3 and the bottom plate 1 is a rack end 7. Preferably, the rack end 7 is an independent structure, which is threaded to the end of the actuating rod 6 for easy replacement. A rotating shaft 8 is rotatably disposed between the two mounting holes. A gear 10 that meshes with the rack end 7 is fixedly mounted on the rotating shaft 8. An elastic element 11 is sleeved on the actuating rod 6. The elastic element 11 is located between the fixed seat 4 and the upright plate 2. The gear 10 and the rotating shaft 8 are integral structures formed by machining.

[0035] The blocking assembly includes a blocking frame 9 fixed on the rotating shaft 8 and rotating synchronously with the rotating shaft 8. A contact energy-absorbing element 12 is installed on the blocking frame 9. It also includes an impact seat 13 disposed on the ground. When in the blocking state, the blocking frame 9 abuts against the impact seat 13. The blocking frame 9 is welded and fixed to the rotating shaft 8. The impact seat 13 is fixed to the ground by expansion bolts.

[0036] The power unit 14 drives the actuator 6 to switch the blocking device between a blocking state and a releasing state. The power unit 14 is an electric telescopic rod or a hydraulic telescopic rod, which is positioned away from the direction from which the stacker crane came. The output rod of the power unit 14 faces the actuator 6. When the stacker crane needs to be moved out of the aisle, the power unit 14 is activated, the output rod extends and pushes the actuator 6 forward, the elastic element 11 is compressed, the actuator 6 drives the rack end 7 to move, the rack end 7 meshes with the gear 10, driving the rotating shaft 8 to rotate. The rotation of the rotating shaft 8 drives the blocking assembly to rotate synchronously until it rotates to the releasing state. After the stacker crane is moved out of the aisle, the output rod of the power unit 14 retracts, the elastic element 11 provides a restoring force, and then drives the actuator 6 to move backward. The actuator 6 drives the rack end 7 to move, the rack end 7 meshes with the gear 10, driving the rotating shaft 8 to rotate. The rotation of the rotating shaft 8 drives the blocking assembly to rotate synchronously until it rotates to the blocking state.

[0037] First, this application achieves flexible switching between the blocking and releasing states of the stop device through the coordinated operation of various components, ensuring rapid and safe transfer of the stacker crane during maintenance. This solves the problem of fixed stop devices being immovable, requiring manual repairs in confined narrow aisles when the stacker crane malfunctions, resulting in low maintenance efficiency and poor safety. Second, the support assembly forms a stable mounting foundation through the base plate, vertical plate, and top plate, while the linear bearing ensures the linear motion accuracy of the actuator, and the elastic element provides automatic reset force, ensuring that the stop device can stably remain in the blocking state without the power unit's drive, effectively reducing the operating frequency of the power unit and extending the service life of the elastic element and the power unit. Third, this application achieves... The rack and pinion meshing with the gear converts linear motion into rotary motion. Compared to the existing articulated linkage transmission method, the rack and pinion meshing transmission method has a compact structure, reduces the number of parts and space occupation, and provides continuous motion transmission and precise positioning. This effectively improves the accuracy and response speed of the stop device's position control, ensures the operational stability of the stop device, and solves the problems of excessive motion error caused by dead points and friction at multiple articulated points in articulated linkage transmission, which leads to incomplete release and stacker crane collisions, as well as the need for frequent adjustments and maintenance. Finally, the stop assembly, through the independent setting of the stop frame and impact seat, can effectively absorb the impact energy from the stacker crane when in the stop state, effectively preventing the stacker crane from accidentally rushing out of the aisle.

[0038] Specifically, such as Figure 1 , 2 As shown in Figures 6 and 7, the system also includes a position detection component for detecting the rotation angle of the rotating shaft 8. This component includes a trigger plate 15 mounted on the rotating shaft 8 and two sensors 16 spaced at predetermined angles on the upper surface of the top plate 3. The sensors 16 monitor the position of the trigger plate 15. It is understood that the two sensors 16 are spaced 90 degrees apart. When the rotating shaft 8 drives the stop frame 9 to rotate, the trigger plate 15 fixed to it rotates accordingly. The sensors are proximity switches or Hall effect sensors. When in a stopped state, the trigger plate 15 is sensed by one of the sensors 16, and a stopped state signal is output. When in a released state, the trigger plate 15 is sensed by the other sensor 16, and a released state signal is output. This configuration enables reliable and accurate rotation angle feedback, ensuring the precision of rotation angle control and avoiding the risk of incomplete stacker crane movement or collisions due to angle deviations.

[0039] Specifically, such as Figure 3-5 As shown, the base is also provided with an anti-rotation seat 17, which is located on the side of the fixed base 4 away from the upright plate 2. The anti-rotation seat 17 abuts against the actuator rod 6. The abutment position between the actuator rod 6 and the anti-rotation seat 17 is flattened into an anti-rotation plane 61. The anti-rotation seat 17 is fixed to the base by bolts. When the actuator rod 6 reciprocates linearly in the linear bearing 5, the circular cross-section actuator rod 6 will tend to rotate around its axis under the action of frictional torque. This rotation will cause the rack end 7 at the front end to misalign with the gear 10 on the rotating shaft 8, which will not only aggravate tooth surface wear and generate vibration noise, but also lead to a decrease in transmission accuracy or even jamming. Through this setting, the rotational freedom of the actuator rod 6 is effectively restricted, ensuring that the rack always maintains precise meshing with the gear, which not only ensures smooth movement but also maintains transmission accuracy. This effectively solves the problems of increased tooth surface wear, increased vibration noise, and decreased transmission accuracy or even jamming caused by the rotation of the actuator rod 6.

[0040] Specifically, the contact energy-absorbing component 12 is a hydraulic damper. It should be noted that the hydraulic damper adopts a model well known to those skilled in the art. In the stopped state, if the stacker crane loses control and collides with the stopping device, the hydraulic damper absorbs the impact load of the stacker crane by means of hydraulic damping, which can avoid a hard collision between the stacker crane and the stopping device, and effectively reduce the probability of transmission accuracy reduction caused by the impact load being transmitted to the actuator and stopping components.

[0041] Specifically, such as Figure 6-7As shown, the stop frame 9 includes a back plate 91. One side of the back plate 91 is provided with an energy-absorbing mounting part 92 for mounting the contact energy-absorbing component 12, and the other side is provided with a rotational stabilizing part 93 for connecting the rotating shaft 8. Both the energy-absorbing mounting part 92 and the rotational stabilizing part 93 are square frame structures, and there is a preset distance between them. A connecting horizontal plate 94 is provided between the energy-absorbing mounting part 92 and the rotational stabilizing part 93. The connecting horizontal plate 94 is perpendicular to the back plate 91. One end of the connecting horizontal plate 94 is connected to the side wall of the rotational stabilizing part 93, and the other end is connected to the side wall of the energy-absorbing mounting part 92. It should be noted that the back plate 91 and the connecting cross plate 94 are an integral structure welded together. By setting a square frame structure, the overall impact resistance strength can be improved, and the impact load can be effectively dispersed, reducing the impact force borne by the rotating shaft 8. Furthermore, the preset distance between the energy-absorbing mounting part 92 and the rotating stabilizing part 93, as well as the setting of the connecting cross plate 94, increases the local structural strength while forming a buffer space, decomposing and redistributing the impact force borne by the stop frame 9, effectively attenuating the impact force transmitted to the rotating stabilizing part 93. When the stacker crane impact force acts on the contact energy-absorbing component 12 at the front end of the energy-absorbing mounting part 92, it will be in the buffer space between the energy-absorbing mounting part 92 and the rotating stabilizing part 93. An internal torque is generated. The connecting plate 94 and the back plate 91 bear most of the internal torque in the form of shear force and axial force. Most of the internal torque is converted into a tendency for the entire stop frame 9 to rotate around the rotation axis 8. However, this rotation tendency is blocked by the impact seat 13. The impact seat 13 generates a reverse support force on the energy-absorbing mounting part 92, so that most of the impact energy is limited and consumed in the transmission path of the energy-absorbing mounting part 92—connecting plate 94—impact seat 13. This makes the force finally transmitted to the rotation steady part 93 mainly the stable reverse support force and a small amount of impact force, thereby effectively avoiding the impact force from directly impacting the rotation axis 8 and the gear 10, and avoiding the problem of damage to the gear 10 or deformation of the rotation axis 8 due to excessive impact.

[0042] Specifically, such as Figure 6As shown, the distance from the front end face of the energy-absorbing mounting part 92 to the back plate 91 is equal to the distance from the rotationally stable part 93 to the back plate 91; the relationship between the width K1 of the energy-absorbing mounting part 92, the width K2 of the rotationally stable part 93, and the distance K3 between the energy-absorbing mounting part 92 and the rotationally stable part 93 satisfies K1:K2:K3=(1.5-1.8):(1.2-1.4):1. First, this design ensures that the torque distribution transmitted to the back plate 91 via the connecting plate 94 is symmetrical and balanced when subjected to impact, avoiding the additional torque generated by the force eccentricity of the stop frame 9. This ensures that the impact force can be transmitted to the impact seat 13 more effectively through the connecting plate 94 and the back plate 91. Furthermore, the larger width of the energy-absorbing mounting part 92 provides a larger section modulus of bending resistance, ensuring that it can effectively disperse and withstand the concentrated impact force from the contact energy-absorbing element 12. The moderate width of the rotationally stable part 93 ensures sufficient torsional stiffness while avoiding the impact of excessive weight on the response speed, further ensuring operational stability. The spacing between the two ensures sufficient structural strength while further ensuring the effectiveness of the buffer space, further preventing the impact force from being directly and without attenuation transmitted from the energy-absorbing mounting part 92 to the rotationally stable part 93, effectively extending the service life.

[0043] Specifically, such as Figure 6-7 As shown, the energy-absorbing mounting part 92 is a square frame structure with openings at the top and bottom, and the rotational stabilization part 93 is a closed box-type square frame structure; the two side walls of the energy-absorbing mounting part 92 extend downward and are connected to impact blocks 95. In the blocking state, the impact blocks 95 abut against the impact seat 13. The impact blocks 95 are connected to the back of the energy-absorbing mounting part 92 and have a preset gap with the back plate 91. The upper and lower opening structure of the energy-absorbing mounting part 92 ensures sufficient rigidity in the main load-bearing direction while maintaining appropriate flexibility, effectively absorbing the multidimensional vibration energy caused by the impact force, and also improving the installation convenience of the contact energy-absorbing part 12. The closed box structure of the rotational stabilization part 93 provides extremely high torsional stiffness, ensuring a stable and reliable connection with the rotating shaft 8, and further reducing the impact force on the rotating shaft 8. Secondly, by setting a preset gap between the impact block 95 and the back plate 91, a temporal force transmission separation can be formed. When the stacker crane impacts, in the initial stage, the existence of the gap allows the impact force to be directly transmitted to the impact seat 13 through the impact block 95. Only when the impact force is large enough will the stop frame 9 participate in sharing the stress. Therefore, through this setting, the impact force can be further effectively isolated from the rotational stabilization part 93, further ensuring the meshing of the gear 10 rack and pinion and the stability and consistency of the rotation of the rotating shaft 8.

[0044] Specifically, such as Figure 6-7As shown, the distance K4 between the impact block 95 and the back plate 91 is 0.15-0.35 times the distance K3 between the energy-absorbing mounting part 92 and the rotational stabilization part 93. This arrangement further coordinates and balances the relationship between impact force transmission and structural strength. It avoids the problem of excessive impact load on the rotating shaft 8 due to the rapid transmission of impact force to the rotational stabilization part 93 in the initial stage of collision, which could affect meshing stability. It also ensures overall structural strength, preventing plastic deformation or weld cracking of the energy-absorbing mounting part 92 during stacker crane collisions due to excessive cantilever bending moments.

[0045] Specifically, such as Figure 5 As shown, the actuator 6 is also provided with a clamping block 18, which is located between the elastic element 11 and the fixed base 4. The elastic element 11 is a compression spring, with one end abutting against the vertical plate 2 and the other end abutting against the clamping block 18. It should be noted that the clamping block 18 consists of upper and lower parts, which are fastened together by bolts, so that the clamping block 18 can be fixed at any position of the actuator 6. By adjusting the position of the clamping block 18, the compression spring can achieve the required elastic state, effectively improving the service life and applicability of the elastic element 11.

[0046] Specifically, to ensure motion stability, bearing seats 19 are installed at the mounting holes on the horizontal plate and the base plate 1, and the two ends of the rotating shaft 8 are respectively inserted into the corresponding bearing seats 19.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are exhaustively listed. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] For those skilled in the art, various modifications and improvements can be made without departing from the concept of this utility model, and these modifications and improvements are all within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims.

Claims

1. A stacker crane stopping device, characterized in that, include: A support assembly includes a base plate disposed on the ground, an upright plate connected to the upper surface of the base plate, a top plate connected to the upper surface of the upright plate, mounting holes being provided opposite to the base plate, a fixing seat being provided on the upper surface of the base plate, and linear bearings being installed on both the fixing seat and the upright plate. An actuation component includes an actuating rod passing through two linear bearings. One end of the actuating rod extending to the region between the top plate and the bottom plate is a rack end. A rotating shaft is rotatably disposed between the two mounting holes. A gear that meshes with the rack end is fixedly mounted on the rotating shaft. An elastic element is sleeved on the actuating rod. The elastic element is located between the fixed seat and the upright plate. The blocking assembly includes a blocking frame fixed on the rotating shaft and rotating synchronously with the rotating shaft, a contact energy-absorbing element installed on the blocking frame, and an impact seat disposed on the ground. When in the blocking state, the blocking frame abuts against the impact seat. The power unit is used to drive the actuator to move so that the stop device switches between a stopped state and a released state.

2. The stacker crane stopping device according to claim 1, characterized in that, It also includes a position detection component for detecting the rotation angle of the rotating shaft, which includes a sensing trigger piece disposed on the rotating shaft and two sensing elements disposed at predetermined angular intervals on the upper surface of the top plate, the sensing elements being used to monitor the position of the sensing trigger piece.

3. A stacker crane stopping device according to claim 2, characterized in that, An anti-rotation seat is also provided on the base plate. The anti-rotation seat is located on the side of the fixed seat away from the upright plate. The anti-rotation seat abuts against the actuator rod. The abutment position between the actuator rod and the anti-rotation seat is flattened into an anti-rotation plane.

4. A stacker crane stopping device according to claim 3, characterized in that, The contact energy-absorbing component is a hydraulic damper.

5. A stacker crane stopping device according to claim 4, characterized in that, The stop frame includes a back plate. One side of the back plate is provided with an energy-absorbing mounting part for mounting the contact energy-absorbing component, and the other side is provided with a rotational stabilizing part for connecting the rotating shaft. Both the energy-absorbing mounting part and the rotational stabilizing part are square frame structures, and there is a preset distance between them. A connecting horizontal plate is provided between the energy-absorbing mounting part and the rotational stabilizing part. The connecting horizontal plate is perpendicular to the back plate. One end of the connecting horizontal plate is connected to the side wall of the rotational stabilizing part, and the other end is connected to the side wall of the energy-absorbing mounting part.

6. A stacker crane stopping device according to claim 5, characterized in that, The distance from the front end face of the energy-absorbing mounting part to the back plate is equal to the distance from the rotationally stable part to the back plate; The relationship between the width K1 of the energy-absorbing mounting part, the width K2 of the rotationally stable part, and the distance K3 between the energy-absorbing mounting part and the rotationally stable part satisfies K1: K2: K3=(1.5-1.8): (1.2-1.4):

1.

7. A stacker crane stopping device according to claim 6, characterized in that, The energy-absorbing mounting part is a square frame structure with openings at the top and bottom, and the rotational stabilization part is a closed box-type square frame structure. The two side walls of the energy-absorbing mounting part extend downward and are connected to impact blocks. In the blocking state, the impact blocks abut against the impact seat. The impact blocks are connected to the back of the energy-absorbing mounting part and have a preset gap with the back plate.

8. A stacker crane stopping device according to claim 7, characterized in that, The distance K4 between the impact block and the back plate is 0.15-0.35 times the distance K3 between the energy-absorbing mounting part and the rotational steady-state part.

9. A stacker crane stopping device according to claim 8, characterized in that, The actuator is also provided with a clamping block, which is located between the elastic element and the fixed base. The elastic element is a compression spring, one end of which abuts against the vertical plate and the other end of which abuts against the clamping block.

10. A stacker crane stopping device according to claim 9, characterized in that, Bearing seats are installed at the mounting holes on the horizontal plate and the base plate, and the two ends of the rotating shaft are respectively inserted into the corresponding bearing seats.

Images