Multifunctional multi-angle adjusting stacking machine

Abstract

The invention relates to the technical field of stacking equipment, in particular to a multifunctional multi-angle adjusting stacking machine which mainly solves the problem that in the prior art, the space utilization rate of a stacking machine is remarkably limited in practical application. Comprising a control system, a chassis, wheels, a power system, a steering system, a cockpit, a connecting frame, an outer portal frame, an inner portal frame, a lifting frame, a fork arm device, a first guide device, a second guide device, a rotating shaft, a lifting driving device, a rotating driving device and a balance weight device, the outer portal frame is arranged at the front end of the chassis, and the first guide device is arranged on the outer portal frame; the inner portal frame is arranged on the first guide device, the second guide device is arranged on the inner portal frame, the lifting frame is arranged on the second guide device, the lifting driving device is connected with the lifting frame and the inner portal frame, the fork arm device is arranged on the lifting frame through a rotating shaft, the rotating driving device is connected with the rotating shaft, and the cockpit is fixedly connected with the inner portal frame through a connecting frame. And the counterweight device is arranged at the rear end of the chassis.

Description

Technical Field

[0001] The present invention relates to the technical field of stacking equipment, and particularly to a multi-functional and multi-angle adjustable stacking machine. Background Art

[0002] In the modern warehousing and logistics system, as the core equipment for vertical material handling, the stacking machine is widely used in the shelf access operation of palletized goods due to its high load capacity and flexible lifting characteristics. However, in actual applications, traditional stacking machines have significant limitations in space utilization, that is: counterbalanced stacking machines generally have a large turning radius, usually 3 - 4 meters, and the vehicle body length exceeds the limit, with the length of conventional models ≥ 2.5 meters. According to the ISO 3691 safety standard, when operating such equipment, the main passage width is required to be at least maintained at 3.5 - 4.2 meters to complete 90° turning and emergency braking operations. This design specification directly results in approximately 30% - 40% of the plane space in the warehousing shelf layout being fixedly designated as the equipment passage area, severely squeezing the effective storage area; Experimental data shows that the volume ratio of the shelf area under the traditional warehousing layout can only reach 55% - 65%, with an efficiency gap of more than 25% compared to the theoretical maximum value. This not only directly raises the warehousing rent cost per unit of goods, approximately increasing by 0.8 - 1.2 yuan / cubic meter * day, but also reduces the order processing efficiency by 18% - 22% due to the extended picking path. Especially in the context of the explosive growth of e-commerce, the storage capacity bottleneck has become a key factor restricting the throughput of logistics centers. Summary of the Invention

[0003] Therefore, in view of the above problems, the present invention provides a multi-functional and multi-angle adjustable stacking machine, which mainly solves the problem of significant space utilization constraints of stacking machines in actual applications in the prior art.

[0004] To achieve the above object, the present invention adopts the following technical solutions: A multi-functional multi-angle adjustable reach stacker, comprising a control system, a chassis, wheels, a power system, a steering system, a cockpit, a connecting frame, an outer mast, an inner mast, a lifting frame, a fork arm device, a first guiding device, a second guiding device, a rotating shaft, a lifting driving device, a rotating driving device and a counterweight device. It is defined that the direction extending along the length of the chassis is the longitudinal direction, and the direction extending along the width of the chassis is the transverse direction. The wheels are arranged on the chassis. The power system is connected to the wheels and is used to drive the chassis to move. The steering system is connected to the wheels and is used to drive the chassis to steer. The outer mast is arranged at the front end of the chassis. The first guiding device is arranged on the outer mast. The inner mast is arranged on the first guiding device. The second guiding device is arranged on the inner mast. The lifting frame is arranged on the second guiding device. The lifting driving device is connected to the lifting frame and the inner mast and is used to drive the lifting movement of the lifting frame and the inner mast. The fork arm device is arranged on the lifting frame through the rotating shaft. The rotating driving device is connected to the rotating shaft and is used to drive the lateral swing of the fork arm device. The cockpit is fixedly connected to the inner mast through the connecting frame. The counterweight device is arranged at the rear end of the chassis. The power system, the steering system, the fork arm device, the lifting driving device, the rotating driving device and the counterweight device are respectively electrically connected to the control system; The counterweight device includes a fixed counterweight block and a movable counterweight assembly. The fixed counterweight block is fixedly arranged at the rear end of the chassis. The movable counterweight assembly is arranged on the fixed counterweight block and reciprocates along the transverse direction. The movable counterweight assembly includes a transverse guiding mechanism distributed along the transverse direction, a counterweight block arranged on the transverse guiding mechanism and a driving mechanism connected to the counterweight block; The control system includes a controller, a first pressure sensor for detecting the weight of the goods on the fork arm device, a second pressure sensor for detecting the weight of the counterweight block, a first distance sensor for detecting the distance between the goods on the fork arm device and the rotation center of the rotating shaft, a second distance sensor for detecting the distance between the counterweight block and the midpoint of the transverse guiding mechanism, and an angle sensor for detecting the rotation angle of the fork arm device. The first pressure sensor, the second pressure sensor, the first distance sensor, the second distance sensor and the angle sensor are respectively electrically connected to the input end of the controller.

[0005] Further, the fork arm device includes a support frame, two support arms fixedly connected to one end of the support frame and distributed in parallel, two fork arms respectively sleeved on the support arms and sliding along the support arms, and a hydraulic cylinder for driving the longitudinal movement of the fork arms.

[0006] Further, a cross beam is connected between the two support arms. The two ends of the hydraulic cylinder are respectively connected to the cross beam and the support frame.

[0007] Further, the control method of the control system includes the following steps: A. Predetermine the center of the transverse guiding mechanism and the distance of the lateral guide mechanism , and input it into the controller; B. When there is no cargo on the fork arm, the controller controls the counterweight to be located at the center of the lateral guide mechanism. Department; C. When there is cargo on the fork arm, the controller controls the first pressure sensor, the second pressure sensor, the first distance sensor, the second distance sensor, and the angle sensor to obtain detection data in real time, and transmits the detection data to the controller; D. The controller calculates the distance the counterweight moves due to the rotation of the fork arm through the following calculation formula, thereby adjusting the position of the counterweight in real time; ; in, is the distance the counterweight moves due to the rotation of the fork arm; is the weight of the fork arm cargo; is the weight of the counterweight; is the fork arm rotation angle; It is the distance from the fork arm to the center of rotation; E. When the fork arm rotates, the controller obtains the distance the counterweight moves due to the rotation of the fork arm Distance from lateral guide And compare, when When the fork arm continues to rotate; when When the fork arm is stopped, the fork arm will be stopped and a prompt will be given to add the weight.

[0008] Furthermore, the rotary drive device includes a worm wheel arranged on the rotating shaft, a worm rotatably arranged on the lifting frame and meshing with the worm wheel, and a hydraulic motor driving the worm wheel to rotate.

[0009] Furthermore, the chassis is provided with a recessed groove for the lower part of the cockpit to be embedded.

[0010] By adopting the foregoing technical solution, the beneficial effects of the present invention are as follows: For this multifunctional multi-angle adjustable reach stacker, by setting a rotary drive device to drive the fork arm device to swing laterally along the rotation axis, and integrating a multi-stage lifting and guiding structure and a chassis steering system with the fork arm device, the turning radius of the equipment is significantly reduced, specifically reduced to 2.2 - 2.8 meters, so that the width requirement of the main channel is reduced to 2.8 - 3.3 meters, which is more than 20% less than the ISO standard. This design can increase the volume ratio of the shelf area to 72% - 78%, reduce the unit warehousing cost by about 0.5 yuan per cubic meter per day, and at the same time shorten the picking path by more than 15%, greatly improving the utilization rate of warehousing space. And by connecting the cab with the inner gantry, the synchronous lifting of the cab and the inner gantry is realized, which is convenient for observing the specific position of the fork arm device, is conducive to accurate fork loading and unloading, improves safety and work efficiency. At the same time, by balancing the fork arm device and the goods on the other side of the inner gantry laterally through the cab, the stability of the equipment is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a front view structural schematic diagram of an embodiment of the present invention; Figure 2 is a front view structural schematic diagram of the cab in the ascending state in an embodiment of the present invention; Figure 3 is a top view structural schematic diagram of the fork arm device in the aligned state in an embodiment of the present invention; Figure 4 is a top view structural schematic diagram of the fork arm device in the state of swinging 90° to the right in an embodiment of the present invention; Figure 5 is a top view structural schematic diagram of the fork arm device in the state of swinging 90° to the left in an embodiment of the present invention; Figure 6 is a top view structural schematic diagram of the fork arm device in the aligned state and the counterweight device in an embodiment of the present invention; Figure 7 is a top view structural schematic diagram of the fork arm device in the state of swinging 90° to the right and the counterweight device in an embodiment of the present invention; Figure 8 is a top view structural schematic diagram of the fork arm device in the state of swinging 90° to the left and the counterweight device in an embodiment of the present invention; Figure 9 is a circuit module diagram of an embodiment of the present invention.

[0012] Description of the reference numerals: 1. Control system; 2. Chassis; 3. Wheels; 4. Power system; 5. Steering system; 6. Cockpit; 7. Connecting frame; 8. Outer gantry; 9. Inner gantry; 10. Lifting frame; 11. Fork arm device; 12. First guiding device; 13. Second guiding device; 14. Rotating shaft; 15. Lifting drive device; 16. Rotating drive device; 17. Counterweight device; 18. Yielding groove 101. Controller; 102. First pressure sensor; 103. Second pressure sensor; 104. First distance sensor; 105. Second distance sensor; 106. Angle sensor; 111. Support frame; 112. Support arm; 113. Fork arm; 114. Hydraulic cylinder; 115. Cross beam 161. Worm gear; 162. Worm; 163. Hydraulic motor; 171. Fixed counterweight block; 173. Lateral guiding mechanism; 174. Counterweight block; 175. Driving mechanism Specific embodiments

[0013] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments

[0014] The embodiments of the present invention are as follows Refer to Figures 1 to 9 As shown, a multi-functional and multi-angle adjustable stacker includes a control system 1, a chassis 2, wheels 3, a power system 4, a steering system 5, a cockpit 6, a connecting frame 7, an outer gantry 8, an inner gantry 9, a lifting frame 10, a fork arm device 11, a first guiding device 12, a second guiding device 13, a rotating shaft 14, a lifting drive device 15, a rotating drive device 16 and a counterweight device 17. It is defined that the direction extending along the length of the chassis 2 is the longitudinal direction, and the direction extending along the width of the chassis 2 is the transverse direction. The wheels 3 are arranged on the chassis 2. The power system 4 is connected to the wheels 3 and is used to drive the chassis 2 to move. The steering system 5 is connected to the wheels 3 and is used to drive the chassis 2 to steer. The outer gantry 8 is arranged at the front end of the chassis 2. The first guiding device 12 is arranged on the outer gantry 8. The inner gantry 9 is arranged on the first guiding device 12. The second guiding device 13 is arranged on the inner gantry 9. The lifting frame 10 is arranged on the second guiding device 13. The lifting drive device 15 is connected to the lifting frame 10 and the inner gantry 9 and is used to drive the lifting movement of the lifting frame 10 and the inner gantry 9. The fork arm device 11 is arranged on the lifting frame 10 through the rotating shaft 14. The rotating drive device 16 is connected to the rotating shaft 14 and is used to drive the fork arm device 11 to swing laterally. The cockpit 6 is fixedly connected to the inner gantry 9 through the connecting frame 7. The counterweight device 17 is arranged at the rear end of the chassis 2. The power system 4, the steering system 5, the fork arm device 11, the lifting drive device 15, the rotating drive device 16 and the counterweight device 17 are respectively electrically connected to the control system 1

[0015] In this embodiment, the power system 4, the steering system 5, the lifting drive device 15, the first guiding device 12, and the second guiding device 13 are prior arts and will not be elaborated here.

[0016] In this multi-functional and multi-angle adjustable stacker, by setting the rotary drive device 16 to drive the fork arm device 11 to swing laterally along the rotary shaft 14, and integrating the multi-stage lifting and guiding structure and the chassis 2 steering system 5 with the fork arm device 11, the turning radius of the equipment is significantly reduced, specifically reduced to 2.2 - 2.8 meters, so that the width requirement of the main channel is reduced to 2.8 - 3.3 meters, which is more than 20% less than the ISO standard. This design can increase the volume ratio of the shelf area to 72% - 78%, reduce the unit warehousing cost by about 0.5 yuan per cubic meter per day, and at the same time shorten the picking path by more than 15%, greatly improving the utilization rate of warehousing space. And by connecting the cab 6 with the inner gantry 9, the synchronous lifting of the cab 6 and the inner gantry 9 is realized, which is convenient for observing the specific position of the fork arm device 11, beneficial to accurate fork loading and unloading, improving safety and work efficiency. At the same time, the cab 6 balances the fork arm device 11 and the goods on the other side of the inner gantry 9 laterally, improving the stability of the equipment.

[0017] Specifically, the fork arm device 11 includes a support frame 111, two support arms 112 fixedly connected to one end of the support frame 111 and distributed in parallel, two fork arms 113 sleeved on the support arms 112 and sliding along the support arms 112, and a hydraulic cylinder 114 for driving the longitudinal movement of the fork arms 113. Through the sliding cooperation of the double support arms 112 and the fork arms 113, the fork arms 113 can perform telescopic movement to achieve accurate longitudinal positioning of goods for fork loading or unloading. This design enables non-forward access operations of goods in narrow channels, reduces the dependence on the straightness of the roadway, and increases the tolerance rate of the shelf spacing by 40%. It is particularly suitable for the transformation scenario of special-shaped warehousing spaces. And a cross beam 115 is connected between the two support arms 112, and both ends of the hydraulic cylinder 114 are respectively connected to the cross beam 115 and the support frame 111. The setting of the cross beam 115 makes the hydraulic connection mechanism form a three-point stable support system, controlling the lateral offset of the fork arms 113 during longitudinal movement to ≤ 5 mm compared with the traditional structure of 12 - 15 mm, improving the access accuracy of the 9-meter-high shelf to ± 2 cm and reducing the time-consuming of the secondary adjustment operation by 50%.

[0018] Moreover, the rotary drive device 16 includes a worm gear 161 provided on the rotary shaft 14, a worm 162 rotatably provided on the lifting frame 10 and meshing with the worm gear 161 for transmission, and a hydraulic motor 163 for driving the rotation of the worm 162. The worm gear and worm drive mechanism realizes precise angle control and has the mechanical self-locking characteristic, and can maintain the current angle ≥ 30 minutes under the power-off condition to ensure the safety of emergency braking.

[0019] Furthermore, the chassis 2 is provided with a recessed groove 18 for the lower part of the cockpit 6 to be embedded. The sunken cockpit 6 design lowers the height of the center of gravity of the equipment. Combined with the buffer structure of the recess 18, the lateral acceleration during high-speed steering is reduced, thereby improving the operator's physical comfort and reducing shelf collision accidents caused by the equipment tilting.

[0020] In this embodiment, the counterweight device 17 includes a fixed counterweight block 171 and a movable counterweight assembly. The fixed counterweight block 171 is fixed to the rear end of the chassis 2, and the movable counterweight assembly is arranged on the fixed counterweight block 171 and reciprocates in the lateral direction. The laterally adjustable movable counterweight assembly reduces the center of mass offset of the equipment to 1 / 3 of the traditional structure through a dynamic balance compensation mechanism, thereby reducing the risk of rollover, allowing full-load steering operations to be completed in a 1.5m narrow lane, while reducing the total amount of counterweight blocks by 15%. The movable counterweight assembly is arranged on the upper surface of the fixed counterweight block 171. The counterweight layout shortens the rear overhang length of the equipment by 0.8 to 1.2m, controls the length of the entire vehicle within 2.1m, and reduces the U-turn radius at the end of the lane to 2.6m. The industry average is 3.5m, and the space utilization rate is increased by 17%.

[0021] At the same time, the movable counterweight assembly includes a lateral guide mechanism 173 distributed along the lateral direction, a counterweight block 174 arranged on the lateral guide mechanism 173, and a driving mechanism 175 connected to the counterweight block 174. The driving mechanism 175 is a linear driving mechanism, preferably a hydraulic cylinder, a pneumatic cylinder, or an electric push cylinder, preferably a hydraulic cylinder. The modular movable counterweight assembly supports online weight compensation, and dynamic adjustment of the load ratio is achieved by replacing counterweight blocks 174 of different specifications, so that the equipment can adapt to multi-scenario operations from light cartons to heavy steel coils, thereby improving the reuse rate of equipment.

[0022] In this embodiment, the control system 1 includes a controller 101, a first pressure sensor 102 for detecting the weight of the cargo on the fork arm 113, a second pressure sensor 103 for detecting the weight of the counterweight 174, a first distance sensor 104 for detecting the distance between the cargo on the fork arm 113 and the rotation center of the rotating shaft 14, a second distance sensor 105 for detecting the distance between the counterweight 174 and the midpoint of the lateral guide mechanism 173, and an angle sensor 106 for detecting the rotation angle of the fork arm 113. The first pressure sensor 102, the second pressure sensor 103, the first distance sensor 104, the second distance sensor 105, and the angle sensor 106 are electrically connected to the input end of the controller 101, respectively. The multi-sensor closed-loop control system realizes real-time calculation of torque balance, can complete the counterweight position adjustment in a short time, and reduces the risk of dynamic imbalance, especially in lateral access operations above 15°, the stability coefficient K value is ≥2.5.

[0023] Further, the control method of the control system 1 includes the following steps: A. Predetermine the center of the lateral guiding mechanism 173 and the distance from the lateral guiding mechanism 173 , and input them into the controller 101; B. When there is no cargo on the fork arm 113, the controller 101 controls the counterweight 174 to be located at the center of the lateral guiding mechanism 173 ; C. When there is cargo on the fork arm 113, the controller 101 controls the first pressure sensor 102, the second pressure sensor 103, the first distance sensor 104, the second distance sensor 105, and the angle sensor 106 to obtain detection data in real time, and transmits the detection data into the controller 101; D. The controller 101 calculates the distance that the counterweight 174 moves due to the rotation of the fork arm 113 through the following calculation formula, so as to adjust the position of the counterweight 174 in real time; ; Wherein, is the distance that the counterweight moves due to the rotation of the fork arm; is the weight of the cargo on the fork arm; is the weight of the counterweight; is the rotation angle of the fork arm; is the distance from the fork arm to the rotation center when picking up the cargo; E. When the fork arm 113 rotates, the controller 101 obtains the distance that the counterweight 174 moves due to the rotation of the fork arm 113 and the distance from the lateral guiding mechanism 173 and makes a comparison. When , continue to rotate the fork arm 113; when , stop rotating the fork arm 113 and prompt to increase the weight of the counterweight 174.

[0024] The control method of this control system allows the maximum lateral operation angle to be extended by more than 45° through an intelligent control algorithm, and the energy consumption of the counterweight movement is reduced by 40% through adaptive adjustment. The overload rollover is prevented by presetting a safety threshold, greatly reducing the accident rate.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0026] In the present invention, unless otherwise clearly specified or limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0028] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. A multi-functional and multi-angle adjustable stacker, characterized in that: It includes a control system, a chassis, wheels, a power system, a steering system, a cockpit, a connecting frame, an outer mast, an inner mast, a lifting frame, a fork arm device, a first guiding device, a second guiding device, a rotating shaft, a lifting driving device, a rotating driving device, and a counterweight device. It is defined that the direction extending along the length of the chassis is the longitudinal direction, and the direction extending along the width of the chassis is the transverse direction. The wheels are arranged on the chassis. The power system is connected to the wheels and is used to drive the chassis to move. The steering system is connected to the wheels and is used to drive the chassis to steer. The outer mast is arranged at the front end of the chassis. The first guiding device is arranged on the outer mast. The inner mast is arranged on the first guiding device. The second guiding device is arranged on the inner mast. The lifting frame is arranged on the second guiding device. The lifting driving device is connected to the lifting frame and the inner mast and is used to drive the lifting and lowering movement of the lifting frame and the inner mast. The fork arm device is arranged on the lifting frame through the rotating shaft. The rotating driving device is connected to the rotating shaft and is used to drive the transverse swing of the fork arm device. The cockpit is fixedly connected to the inner mast through the connecting frame. The counterweight device is arranged at the rear end of the chassis. The power system, the steering system, the fork arm device, the lifting driving device, the rotating driving device, and the counterweight device are respectively electrically connected to the control system; The counterweight device includes a fixed counterweight block and a movable counterweight assembly. The fixed counterweight block is fixedly arranged at the rear end of the chassis. The movable counterweight assembly is arranged on the fixed counterweight block and reciprocates in the transverse direction. The movable counterweight assembly includes a transverse guiding mechanism distributed in the transverse direction, a counterweight block arranged on the transverse guiding mechanism, and a driving mechanism connected to the counterweight block; The control system includes a controller, a first pressure sensor for detecting the weight of the goods on the fork arm device, a second pressure sensor for detecting the weight of the counterweight block, a first distance sensor for detecting the distance between the goods on the fork arm device and the rotation center of the rotating shaft, a second distance sensor for detecting the distance between the counterweight block and the midpoint of the transverse guiding mechanism, and an angle sensor for detecting the rotation angle of the fork arm device. The first pressure sensor, the second pressure sensor, the first distance sensor, the second distance sensor, and the angle sensor are respectively electrically connected to the input end of the controller.

2. The multi-functional multi-angle adjustable stacker according to claim 1, wherein: The fork arm device includes a support frame, two support arms fixedly connected to one end of the support frame and distributed in parallel, two fork arms respectively sleeved on the support arms and sliding along the support arms, and a hydraulic cylinder for driving the longitudinal movement of the fork arms.

3. The multi-functional multi-angle adjustable stacker according to claim 2, wherein: A cross beam is connected between the two support arms. The two ends of the hydraulic cylinder are respectively connected to the cross beam and the support frame.

4. The multi-functional multi-angle adjustable stacker according to claim 3, characterized in that: The control method of the control system includes the following steps: A. Predetermine the center of the lateral guiding mechanism and the distance of the lateral guiding mechanism , and input them into the controller; B. When there is no cargo on the fork arm, the controller controls the counterweight to be located at the center of the lateral guiding mechanism ; C. When there are goods on the fork arms, the controller controls the first pressure sensor, the second pressure sensor, the first distance sensor, the second distance sensor, and the angle sensor to obtain the detection data in real time and transmit the detection data into the controller; D. The controller calculates the distance that the counterweight block moves due to the rotation of the fork arms through the following calculation formula, so as to adjust the position of the counterweight block in real time; ； Among them, is the distance that the counterweight moves due to the rotation of the fork arm; is the weight of the goods on the fork arm; is the weight of the counterweight; is the rotation angle of the fork arm; is the distance from the fork of the fork arm to the rotation center; E. When the fork arm rotates, the controller obtains the distance that the counterweight moves due to the rotation of the fork arm and the distance from the lateral guiding mechanism and compares them. When this condition is met, the fork arm rotation continues; when this condition is not met, the fork arm rotation stops and a prompt is given to increase the weight of the counterweight.

5. The multi-functional multi-angle adjustable stacker according to claim 4, characterized in that: The rotary drive device comprises a worm wheel arranged on a rotary shaft, a worm rotatably arranged on a lifting frame and meshing with the worm wheel for transmission, and a hydraulic motor for driving the worm wheel to rotate.

6. The multi-functional multi-angle adjustable stacker according to claim 1, characterized in that: The chassis is concavely provided with a clearance groove for the lower part of the cockpit to be embedded.

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