A stacker truck capable of carrying multiple goods

Abstract

This invention relates to the field of material handling machinery and discloses a stacking truck capable of carrying multiple goods. The invention features a sliding bracket rotation mechanism between the fork backplate and the fork plate. During the switching process, the force-limiting ball is engaged in the adjusting block, and the spring force ensures that the fork plate, during stacking, avoids excessive load on the fork plate, thus preventing increased safety hazards from the rotating mast. Simultaneously, the contact between the adjusting block and the forklift front guard allows the adjusting block to be retracted into the fork backplate, ensuring that no intervention is required when switching the fork plate and fork backplate to 180 degrees. This ensures that the operator can always stay away from the handling area during operation, greatly increasing safety during handling and ultimately achieving easy switching between different usage scenarios and overload protection.

Description

Technical Field

[0001] This invention relates to the field of material handling machinery, specifically to a stacker truck capable of carrying multiple goods. Background Technology

[0002] Forklifts are industrial material handling vehicles, referring to various wheeled handling vehicles used for loading, unloading, stacking, and short-distance transport of palletized goods. They are commonly used for transporting large items in warehouses and are typically powered by internal combustion engines or batteries. Forklifts can be broadly classified into two types based on their function: pallet trucks and stackers. Pallet trucks, as the name suggests, are used for moving goods; they do not require stacking and only need to move goods from one location to another. Their forklift lifting height is generally no higher than 300mm. Stackers, as the name suggests, are used for stacking goods; their primary function is stacking, and they generally do not handle moving goods. They simply stack multiple items placed in one location. Pallet trucks and stackers each have their specific functions and work together to complete the handling and stacking of goods.

[0003] However, existing pallet trucks can only pick up one pallet of goods at a time, resulting in extremely low efficiency and failing to meet the ever-increasing logistics demands. Increasing handling efficiency would require increasing the number of pallet trucks, significantly increasing operating and maintenance costs, adding to the complexity of the dispatching system, and increasing the workload and intensity of dispatching workers.

[0004] To address this issue, the existing transport vehicle with patent number CN216190838U provides the following technical solution: It includes a housing, a first telescopic assembly, and a second telescopic assembly. The housing is provided with a first guide rail and a second guide rail. The first telescopic assembly includes a first drive member, a sliding plate, a lifting mechanism, and a first fork. The sliding plate is slidably mounted on the first guide rail. The first drive member is connected to the sliding plate to drive the sliding plate to move along the first guide rail. The lifting mechanism is mounted on the sliding plate so that the lifting mechanism can move together with the sliding plate. The first fork is connected to the lifting mechanism to move vertically under the drive of the lifting mechanism. The second telescopic assembly includes a second drive member and a second fork connected to the second drive member. The second fork is slidably mounted on the second guide rail so that the second fork can move along the direction of the second guide rail under the drive of the second drive member. This technical solution uses guide rail movement to achieve telescopic insertion. The vehicle uses legs and telescopic forks to achieve double-pallet handling. However, this technology only enables handling and cannot stack. Due to its structural limitations, it can only handle two pallets at a time, offering very limited improvement in handling efficiency. Furthermore, the lifting height is too low. When goods are stacked too high, the vehicle needs to move a distance to release the other pallet after lowering one, further reducing its handling efficiency. Additionally, when handling goods that need to be placed at higher locations, this vehicle requires a stacker truck, resulting in extremely low handling efficiency in such situations. Therefore, the handling vehicle with patent number CN216190838U has a very limited scope of application and its ability to improve handling efficiency is quite demanding, making it unsuitable for widespread use.

[0005] To address the issues of low handling efficiency of existing pallet trucks, limited applicability of dual-pallet trucks, inability to efficiently handle tall pallets, and inability to perform stacking functions, this invention provides a stacking truck capable of carrying multiple goods. Summary of the Invention

[0006] In view of the shortcomings of existing handling vehicles mentioned in the background art, the present invention provides a stacking vehicle that can carry multiple goods, has the advantage of multi-pallet handling, and solves the technical problems mentioned in the background art.

[0007] This invention provides the following technical solution: a stacker truck capable of loading multiple goods, comprising a forklift shell, with omnidirectional drive wheels embedded in the bottom surface of the forklift shell, a lifting platform disposed in the middle of the inner wall of the forklift shell, and the lifting platform being connected to the bottom of the forklift shell via a lifting mechanism, bottom forks movably disposed on both sides of the lifting platform on the inner wall of the forklift shell, and the bottom forks being connected to the forklift shell via a telescopic lifting structure, a rotating mast movably mounted on one side of the surface of the lifting platform, and a mast rotation mechanism that drives the rotating mast on the surface of the lifting platform. The mechanism enables the mast to rotate, lifting the mast and deflecting it between the mast and the surface of the lifting platform. Folding forks are slidably fitted on the mast. A forklift front guard is provided on one side of the forklift housing. The folding forks pass through the forklift front guard and are located on the outside of the forklift housing. The mast rotation mechanism is located on both sides of the mast. A placement panel is provided on the surface of the forklift housing. A rear baffle located on one side of the placement panel is fixedly connected to one end of the forklift housing. The rotating mast, lifting platform, and mast rotation mechanism work together to ensure that goods are placed orderly on the placement panel during placement.

[0008] Preferably, the folding fork includes a fork plate, a fork back plate, a fork carriage, and a bracket rotation mechanism. There are two fork plates, fork back plates, and bracket rotation mechanisms. One end of each fork plate is hinged to the lower end of the two fork back plates, and the bracket rotation mechanism is located at the bottom of the inner wall of the fork back plate. The two fork back plates are vertically fixed to the end face of the fork carriage, and the two fork back plates are symmetrically arranged. The fork carriage is slidably fixed to the rotating mast.

[0009] Preferably, the rotating mast includes an outer mast, an inner mast, a sprocket mounting bracket, a front lifting cylinder, a cylinder base plate, a rear lifting cylinder, a rotating shaft, a hinge shaft, and a mast housing. The outer mast includes left and right channel steels and is located on the left and right sides of the inner mast, with the outer mast and inner mast slidingly engaged. The bottom of the inner mast is provided with a cylinder base plate, and a front lifting cylinder is fixed on the upper surface of the cylinder base plate, located inside the inner mast. A sprocket mounting bracket is fixed on the upper surface of the front lifting cylinder. A fork carriage is slidably engaged on the inner mast, and the fork carriage is engaged with the sprocket mounting bracket via a chain. One end of the chain is fixedly connected to the fork carriage, and the other end of the chain passes through the sprocket mounting bracket and is fixed to the cylinder base plate. The fork carriage is fixedly connected to the cylinder base plate via a tension spring. Two rear lifting cylinders are provided, symmetrically positioned on the left and right sides of the outer mast, with their lower ends fixedly connected to the bottom of the outer mast. The upper ends of the two rear lifting cylinders are fixedly connected to the upper end of the inner mast. Two mast shells are provided, symmetrically fixed on the left and right sides of the outer mast, with the rear lifting cylinders positioned between the mast shell and the outer mast. A rotating shaft is fixed to the bottom outer side of each mast shell, and the rotating mast is rotatably and fixedly connected to the lifting platform via the rotating shaft. A hinge shaft is fixed to the center of the outer side of the mast shell, and the rotating mast is driven by the mast rotation mechanism via the hinge shaft.

[0010] Preferably, the gantry rotation mechanism includes a slider, a support rocker arm, and a hydraulic cylinder. The hydraulic cylinder is embedded in the surface of the lifting platform. The extension rod of the hydraulic cylinder is fixedly connected to the slider. The slider is slidably disposed on the surface of the lifting platform. The upper end of the slider is rotatably connected to one end of the support rocker arm. The other end of the support rocker arm is rotatably connected to a hinge shaft. There are two gantry rotation mechanisms, which are respectively disposed on the left and right sides of the rotating gantry.

[0011] Preferably, the insert rotating mechanism includes an adjusting block and an ejector spring. The adjusting block is movably installed at the bottom of the fork back plate and is located on one side of the fork plate end. An ejector spring located in the fork back plate is fixedly installed at the top of the adjusting block. An adjusting bolt is threaded to the top of the fork back plate. When the adjusting block extends, it blocks the fork plate to achieve a 90-degree angle between the fork plate and the fork back plate. When the lifting platform moves down to the lowest position, there is a gap of five to ten centimeters between the fork back plate and the inner wall of the forklift front guard. The distance between the rotation axis of the fork plate and the fork back plate and the top surface of the forklift front guard is the thickness of the fork plate. The rotation axis and the rotation axis of the fork plate are coaxially arranged.

[0012] Preferably, the bottom cross-sectional shape of the adjusting block is tapered, one end of the fork plate is provided with a round boss, and the side wall of the adjusting block is provided with a groove that matches the round boss on the fork plate. An anti-slip tooth frame is movably installed on the side wall of the fork back plate, and the side wall of the adjusting block is provided with a slot that matches the anti-slip tooth frame. An anti-slip spring is movably installed on one side of the anti-slip tooth frame, and the anti-slip spring is located inside the fork back plate. One end of the anti-slip tooth frame passes through the fork back plate and is located on the outside of the fork back plate. A magnetic block that magnetically attracts the anti-slip tooth frame is fixedly installed on one side of the forklift front guard.

[0013] Preferably, a detection sleeve is movably installed on the inner wall of the fork back plate, and an adjusting block is located inside the detection sleeve. The inner wall of the detection sleeve is movably connected to an anti-disengagement spring. The anti-disengagement tooth frame is located inside the detection sleeve, and a force-limiting ball is movably installed on the inner side of the detection sleeve. The side wall of the adjusting block is provided with a ball groove adapted to the force-limiting ball.

[0014] The present invention has the following beneficial effects:

[0015] 1. This invention provides a rotating mast and lifting platform within the forklift housing. By coordinating the lifting between the folding forks and the bottom forks, the pallet is gradually placed onto the placement panel via the rotating mast during the placement process. This increases the forklift's carrying capacity, significantly improves handling efficiency, and ultimately achieves the goal of multi-pallet handling.

[0016] 2. This invention combines a rotating mast and a mast rotation mechanism. By using the lifting function of the mast rotation mechanism, the rotating mast can increase the stacking height of goods in a vertical state, thereby expanding the working range and reducing the need for external forklifts during stacking, thus improving work efficiency and ultimately achieving the goal of easy goods stacking.

[0017] 3. This invention establishes a bracket rotation mechanism between the fork backplate and the fork plate. During the switching process, the force-limiting ball is engaged in the adjusting block, and the spring force ensures that the fork plate avoids excessive load on the fork plate during stacking, thus preventing increased safety hazards to the rotating mast. Simultaneously, the contact between the adjusting block and the forklift front guard allows the adjusting block to be retracted into the fork backplate. This ensures that no intervention is required when switching the fork plate and fork backplate to 180 degrees, allowing the operator to remain away from the handling area during operation. This significantly increases safety during handling and ultimately achieves the goal of easily switching between different usage scenarios and overload protection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall external structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall bottom structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the stacking structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the rotating gantry structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the gantry rotation mechanism of the present invention;

[0023] Figure 6 This is a schematic diagram of the insert rotation mechanism of the present invention;

[0024] Figure 7 For the present invention Figure 6 Schematic diagram of the cross-sectional structure at point AA;

[0025] Figure 8 This is a side view of the forklift plate structure of the present invention.

[0026] In the diagram: 1. Folding forks; 2. Rotating mast; 3. Mast rotating mechanism; 4. Placement panel; 5. Lifting platform; 6. Rear end plate; 7. Forklift housing; 701. Forklift front guard; 8. Bottom forks; 9. Universal drive wheel; 10. Magnetic block; 11. Fork plate; 12. Fork back plate; 13. Fork carriage; 14. Insertion mechanism; 140. Adjusting bolt; 141. Ejection spring; 142. Detection sleeve; 143. Force limiting ball; 144. Adjusting block; 145. Anti-slip tooth bracket; 146. Anti-slip spring; 21. Outer mast; 22. Inner mast; 23. Sprocket fixing bracket; 24. Front lifting cylinder; 25. Cylinder base plate; 26. Rear lifting cylinder; 27. Rotating shaft; 28. Hinge shaft; 29. ​​Mast housing; 31. Support rocker arm; 32. Slider; 33. Hydraulic cylinder. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1-3A stacker truck capable of carrying multiple goods includes a forklift shell 7, with four omnidirectional drive wheels 9 embedded in the bottom surface of the shell 7. These four omnidirectional drive wheels 9 are evenly distributed on the lower end surface of the shell 7. Based on existing technology for controlling omnidirectional pulleys, the omnidirectional drive wheels 9 are designed to drive the forklift shell 7 to achieve movement and steering. The implementation of the omnidirectional mechanism is not detailed here. A lifting platform 5 is located in the middle of the inner wall of the shell 7, and the lifting platform 5 is connected to the bottom of the shell 7 via a lifting mechanism, as described in existing technology. The lifting platform 5 is controlled to move up and down, providing power for subsequent cargo transfer. Bottom forks 8 are movably mounted on the inner wall of the forklift housing 7, located on both sides of the lifting platform 5. These bottom forks 8 are connected to the forklift housing 7 via a telescopic lifting mechanism. This mechanism primarily lifts and extends the bottom forks 8 within the inner wall of the forklift housing 7. The technical solution employed is a conventional, known technique, such as hydraulic lifting and hydraulic telescopic mechanisms, as described above. The specific implementation of the lifting and telescopic mechanisms is detailed in this application. Please do not elaborate too much on the details; it is sufficient to ensure that the operation can be realized to satisfy the implementation of other solutions of this invention. A rotating mast 2 is movably installed on one side of the surface of the lifting platform 5, and a mast rotating mechanism 3 is provided on the surface of the lifting platform 5 to drive the rotating mast 2. The mast rotating mechanism 3 lifts the rotating mast 2 and deflects it between the mast and the surface of the lifting platform 5. A folding fork 1 is slidably fitted on the rotating mast 2, and a forklift front guard 701 is provided on one side of the forklift housing 7. The folding fork 1 passes through the forklift front guard 701 and is located on the outside of the forklift housing 7. The mast rotating mechanism 3 is located on the rotating mast. On both sides of 2, a placement panel 4 is provided on the surface of the forklift shell 7, and a rear baffle 6 located on one side of the placement panel 4 is fixedly connected to one end of the forklift shell 7. By rotating the mast 2, lifting platform 5 and mast rotating mechanism 3, the goods are placed on the placement panel 4 in an orderly manner, thereby ensuring that the forklift shell 7 can transfer multiple pallets at the same time during the handling of goods, greatly enhancing its transfer capacity. The bottom forks 8 and folding forks 1 can be retracted into the inner cavity of the forklift shell 7, greatly reducing the turning radius during the transfer process, so as to be suitable for transfer under different working conditions.

[0029] Please see Figure 1 and Figure 3In order to refine the structure of the folding fork 1, the folding fork 1 includes a fork plate 11, a fork back plate 12, a fork carriage 13, and a carriage rotation mechanism 14. There are two fork plates 11, fork back plates 12, and carriage rotation mechanism 14. One end of each fork plate 11 is hinged to the lower end of the two fork back plates 12. The carriage rotation mechanism 14 is placed at the bottom of the inner wall of the fork back plate 12. The two fork back plates 12 are vertically fixed to the end face of the fork carriage 13 and are symmetrically arranged. The fork carriage 13 is slidably fixed on the rotating mast 2. By limiting the structure of the folding fork 1 and the intervention of the carriage rotation mechanism 14, it is ensured that the fixed angle between the fork plate 11 and the fork back plate 12 can be adaptively changed during the subsequent transfer and stacking of pallets to adapt to the subsequent work.

[0030] Please see Figure 3 and Figure 4To refine the structure of the rotating gantry 2, it is described as follows: the rotating gantry 2 includes an outer gantry 21, an inner gantry 22, a sprocket fixing bracket 23, a front lifting cylinder 24, a cylinder base plate 25, a rear lifting cylinder 26, a rotating shaft 27, a hinge shaft 28, and a gantry shell 29. The outer gantry 21 includes left and right channel steels and is located on the left and right sides of the inner gantry 22, with the outer gantry 21 and the inner gantry 22 in sliding fit. The bottom of the inner gantry 22 is provided with a cylinder base plate 25, and the front lifting cylinder 24 is fixed on the upper surface of the cylinder base plate 25. 4. Located inside the inner mast 22, a sprocket mounting bracket 23 is fixed to the upper surface of the front lifting cylinder 24. A fork carriage 13 is slidably fitted onto the inner mast 22. The fork carriage 13 is connected to the sprocket mounting bracket 23 via a chain. One end of the chain is fixedly connected to the fork carriage 13, and the other end passes through the sprocket mounting bracket 23 and is fixedly connected to the cylinder base plate 25. The lower end of the fork carriage 13 is fixedly connected to the cylinder base plate 25 via a tension spring. There are two rear lifting cylinders 26, which are symmetrically arranged on the left and right sides of the outer mast 21. The upper end of the inner gantry 22 is fixedly connected to the bottom of the outer gantry 21. The upper ends of the two rear lifting cylinders 26 are fixedly connected to the upper end of the inner gantry 22. There are two gantry shells 29, which are symmetrically fixed to the left and right sides of the outer gantry 21. The rear lifting cylinders 26 are located between the gantry shells 29 and the outer gantry 21. A rotating shaft 27 is fixed to the bottom of the outer side of the gantry shell 29. The rotating gantry 2 is rotatably and fixedly connected to the lifting platform 5 through the rotating shaft 27. A hinge shaft 28 is fixed to the center of the outer side of the gantry shell 29. The rotating gantry 2 is connected to the gantry rotating mechanism through the hinge shaft 28. The transmission mechanism 3, through the setting of the rotating mast 2, not only ensures that the fork carriage 13 can move, but also ensures that when the goods are transported to the fork plate 11 by the bottom forks 8, according to the structural arrangement between the rotating masts 2 and in combination with the lifting platform 5, the pallets on the fork plate 11 can be placed on the placement panel 4. The fork plate 11 places the pallets on the placement panel 4 by extension and retraction, thereby increasing the number of pallets that can be placed on the surface of the placement panel 4, thereby reducing the number of pallets transported in a single handling and greatly increasing the efficiency of pallet transport.

[0031] Please see Figures 3-5To refine the structure of the gantry rotation mechanism 3, it includes a slider 32, a support rocker arm 31, and a hydraulic cylinder 33. The hydraulic cylinder 33 is embedded in the surface of the lifting platform 5. The extension rod of the hydraulic cylinder 33 is fixedly connected to the slider 32. The slider 32 is slidably disposed on the surface of the lifting platform 5. The upper end of the slider 32 is rotatably connected to one end of the support rocker arm 31, and the other end of the support rocker arm 31 is rotatably connected to the hinge shaft 28. There are two gantry rotation mechanisms 3, which are respectively located on the left and right sides of the rotating gantry 2. By intervening with the hydraulic cylinder 33 and pushing the slider 32, the rotating gantry 2 can be flipped out and stored. This ensures that during the stacking process, the rotating gantry 2 is lifted by the gantry rotation mechanism 3, increasing its stacking height and avoiding the need for external forklifts, thus improving work efficiency.

[0032] Please see Figure 3 , Figure 5 , Figure 6 and Figure 8To accommodate the switching between the fork plate 11 and the fork back plate 12 from 90° to 180° during the conveying and stacking of goods, a bracket rotation mechanism 14, including an adjusting block 144 and an ejection spring 141, is used. The adjusting block 144 is movably mounted on the bottom of the fork back plate 12, located on one side of the end of the fork plate 11. The ejection spring 141, located in the fork back plate 12, is fixedly mounted on the top of the adjusting block 144. The top of the 2 is threaded with an adjusting bolt 140 for adjusting the compression amount of the ejector spring 141. When the adjusting block 144 extends, it blocks the fork plate 11, making a 90-degree angle between the fork plate 11 and the fork back plate 12. When the lifting platform 5 moves down to the lowest position, there is a gap of five to ten centimeters between the fork back plate 12 and the inner wall of the forklift front guard 701. The distance from the rotation axis between the fork plate 11 and the fork back plate 12 to the top surface of the forklift front guard 701 is the thickness of the fork plate 11. The rotation axis 2 The fork plate 11 and the rotating shaft of the lifting platform 5 are arranged coaxially, so that after the lifting platform 5 moves to the bottom, its fork plate 11 will be placed on the forklift front guard 701. When the rotating mast 2 is pushed out by the mast rotating mechanism 3 and is in a vertical position with the lifting platform 5, since the fork plate 11 is placed on the forklift front guard 701, it ensures that when the rotating mast 2 is deflected during actual use, the fork plate 11 is subjected to relative rotation with the fork back plate 12, and the adjustment block 144 is adjusted accordingly. The force is always maintained above the forklift front guard 701, causing the adjusting block 144 to be pushed out by the elastic force of the push-out spring 141, thereby restricting the rotation of the fork plate 11. In turn, by blocking the fork plate 11, the fork plate 11 is restricted to be arranged at a 90-degree angle with the fork back plate 12 during the stacking process. This makes it easier for the mast 2 to lift the fork plate 11. Due to the extension of the adjusting block 144, the fork plate 11 is guaranteed not to deflect, thus maintaining a stable lifting of the pallet.

[0033] Please see Figure 1 , Figure 3 , Figure 6 and Figure 8In order to prevent the rotating mast 2 from falling from a height due to insufficient strength to support the weight of the goods when the fork plate 11 is lifted due to excessive load on the fork plate 11 during the stacking process, the bottom cross-section of the adjusting block 144 is made conical, and a round boss is provided at one end of the fork plate 11. A groove matching the round boss on the side wall of the adjusting block 144 is provided, ensuring that the adjusting block 144 tends to push upwards when the fork plate 11 is under stress. This ensures that after the fork plate 11 is under stress, the fork plate 11 deflects, thus preventing the goods from falling from a height. During the initial lifting phase, the goods may fall. Since the bottom forks 8 are located below the fork plate 11, the fork plate 11 is designed to lift the goods first when they fall, preventing them from falling directly to the ground and damaging them. Simultaneously, an anti-slip tooth bracket 145 is movably installed on the side wall of the fork back plate 12, and a slot adapted to the anti-slip tooth bracket 145 is provided on the side wall of the adjusting block 144. An anti-slip spring 146 is movably installed on one side of the anti-slip tooth bracket 145, and the anti-slip spring 146 is located inside the fork back plate 12. One end of the anti-slip tooth bracket 145 passes through the fork back plate 12 and is located on the outside of the fork back plate 12. Meanwhile, a magnetic block 10 is fixedly installed on one side of the forklift front guard 701 to magnetically attract the anti-slip tooth bracket 145. The top of the forklift is 10 to 15 centimeters higher than the end face of the forklift front guard 701. This ensures that during stacking, when goods are placed on the forklift 11 due to the lifting of the bottom forks 8, the forklift 11 will compress the ejector spring 141 under excessive force, causing the forklift 11 to deflect. This causes the goods to fall from the forklift 11 onto the bottom forks 8, preventing the lifting action from being completed. This ensures that the rotating mast 2 will not pose a safety hazard due to excessive lifting weight. At the same time, the bottom cross-section of the adjusting block 144 is set to a conical shape. This ensures that when the fork back plate 12 is placed at a 180-degree angle to the forklift 11, the falling of the lifting platform 5 will cause the adjusting block 144 to contact the forklift front guard 701, thereby allowing the forklift front guard to... The resistance of the stop 701 forces the adjusting block 144 to press against the fork back plate 12. When the lifting platform 5 moves and disengages from the magnetic block 10, the anti-disengagement spring 146 causes the anti-disengagement tooth frame 145 to press against the adjusting block 144, thereby limiting the output of the adjusting block 144 and ensuring that the fork plate 11 always maintains a 180-degree connection with the fork back plate 12. Similarly, when the fork plate 11 and the fork back plate 12 are at a 90-degree angle, since the fork plate 11 is in a stacking state, when the fork plate 11 continues to rise and disengages from the magnetic block 10, it is restricted by the anti-disengagement tooth frame 145 and the adjusting block 144, ensuring that the fork plate 11 will not deflect again during the stacking process, thus ensuring the stability of the stacking.

[0034] Please see Figure 1 , Figures 6-8 In order to ensure that the adjusting block 144 generates minimal resistance after colliding with the forklift front guard 701 when it retracts to the fork back plate 12, and to prevent the load on the fork plate 11 from causing the ejector spring 141 to be slightly compressed, so that the fork plate 11 deflects but the goods do not detach from it (i.e., the load is slightly greater than the structural bearing capacity), and the elastic force of the ejector spring 141 will continue to increase when it is compressed, although the lifting height is maintained, the fork plate 11 will vibrate due to the movement of the forklift shell 7, thus creating a safety hazard that the goods on the fork plate 11 may fall off. Therefore, by adjusting the fork back plate... A detection sleeve 142 is movably installed on the inner wall of the fork plate 12, and an adjusting block 144 is located inside the detection sleeve 142 and is movably connected to an anti-disengagement spring 146 through the inner wall of the detection sleeve 142. An anti-disengagement toothed bracket 145 is located inside the detection sleeve 142, and a force-limiting ball 143 is movably installed on the inner side of the detection sleeve 142. A ball groove adapted to the force-limiting ball 143 is opened on the side wall of the adjusting block 144, thus ensuring that during actual operation, the adjusting block 144 will be pushed out by the ejection spring 141, causing the force-limiting ball 143 to be stuck in the ball groove on the side wall of the adjusting block 144. When there is weight on the fork plate 11... Its weight needs to overcome the attraction force generated by the magnetic block 10 on the anti-slip tooth frame 145, that is, the force of the adjusting block 144 disengaging from the force-limiting ball 143 stuck in the ball groove and the elastic force of the ejection spring 141. Under the action of these two forces, the limiting force on the adjusting block 144 is the superposition of the two limiting forces. When the force on the fork plate 11 is greater than the breaking limiting force, it will force the force-limiting ball 143 to be squeezed out of the ball groove. At this time, the force-limiting ball 143 will be in a rolling state on the side wall of the adjusting block 144, which greatly reduces its limiting force. At this time, the ejection spring 141 is insufficient to resist the adjustment block 144 because it is only used to push the adjusting block 144 out. The full thrust of block 144 causes the pressure on the fork plate 11 to exceed the set force, which will cause the fork plate 11 to tilt directly, allowing the goods to fall onto the bottom forks 8. This protects the goods and prevents the rotating mast 2 from being overloaded. Similarly, when the goods on the fork plate 11 are not overloaded, when the anti-detachment tooth frame 145 is lifted away from the magnetic block 10, it will be pressed against the adjusting block 144 by the elastic force of the anti-detachment spring 146. This ensures that the adjusting block 144 is always locked, ensuring stable operation of the stacking and preventing the rotating mast 2 from posing a safety hazard due to overload.

[0035] The working principle of this invention is as follows:

[0036] Loading process: When goods need to be moved, the bottom forks 8 extend from the forklift housing 7 to lift and raise the goods. When the height exceeds the initial height of the folding forks 1, the folding forks 1 extend from the forklift housing 7 and move to the underside of the goods. At this time, the bottom forks 8 descend, and the goods fall onto the folding forks 1. The lifting platform 5 rises, which in turn lifts the folding forks 1. When the bottom height of the goods exceeds the height of the placement panel 4, the front lifting cylinder 24 extends, which moves the fork carriage 13 backward. When the rear end of the goods reaches the rear baffle 6, the lifting platform 5 descends, which in turn lowers the folding forks 1, placing the goods steadily on the placement panel 4. The above operation is repeated until the placement panel 4 is full of goods. At this time, the bottom forks 8 extend from the forklift housing 7 to lift and raise the goods. Then, the omnidirectional drive wheels 9 are activated, moving the goods and thus transporting them.

[0037] Unloading state: When goods need to be unloaded, the bottom forks 8 descend, placing the goods on the bottom forks 8 onto the ground. At the same time, the lifting platform 5 rises, which in turn raises the folding forks 1. The folding forks 1 lift the goods on the placement panel 4. Then, the front lifting cylinder 24 retracts, moving the fork carriage 13 forward. When the rear end of the goods reaches above the bottom forks 8, the bottom forks 8 rise, and the folding forks 1 descends. When the goods are lifted by the bottom forks 8, the folding forks 1 retract into the forklift housing 7, and the bottom forks 8 descend, placing the goods on the bottom forks 8 onto the ground. The above operation is repeated until all the goods on the placement panel 4 are placed on the ground.

[0038] Stacking status: When the goods to be unloaded are placed at a high position, the bottom forks 8 extend from the forklift housing 7, lift the goods, and raise them. When the height exceeds the initial height of the folding forks 1, the folding forks 1 extend from the forklift housing 7 and move to the underside of the goods. At this time, the bottom forks 8 descend, the goods fall onto the folding forks 1, the hydraulic cylinder 33 retracts, thereby driving the slider 32 to move, which in turn pushes the support rocker arm 31 to rotate. The support rocker arm 31 pushes the rotating mast 2 to rotate, thereby causing the rotating mast 2 to be... When the support is in a vertical position, the insert rotating mechanism 14 intervenes, making the fork plate 11 and the fork back plate 12 form a 90° angle. At this time, the front lifting cylinder 24 and the rear lifting cylinder 26 are raised, raising the folding fork 1 to the required height. Then, the forklift is moved to place the goods in the required position. After that, the forklift is reversed, the front lifting cylinder 24 and the rear lifting cylinder 26 are retracted, and then the hydraulic cylinder 33 is extended to restore the folding fork 1 to its original height. The above operation is repeated to complete the high-level stacking of goods.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stacker truck capable of carrying multiple goods, comprising a forklift shell (7), characterized in that: The forklift housing (7) has omnidirectional drive wheels (9) embedded in its bottom surface. A lifting platform (5) is provided in the middle of the inner wall of the forklift housing (7), and the lifting platform (5) is connected to the bottom of the forklift housing (7) through a lifting mechanism. Bottom forks (8) located on both sides of the lifting platform (5) are movably provided on the inner wall of the forklift housing (7), and the bottom forks (8) are connected to the forklift housing (7) through a telescopic lifting structure. A rotating mast (2) is movably installed on one side of the surface of the lifting platform (5), and a mast rotating mechanism (3) that is driven and cooperates with the rotating mast (2) is provided on the surface of the lifting platform (5), so that the mast rotating mechanism (3) lifts the rotating mast (2) and connects it with the lifting platform (5). The lifting platform (5) is deflected between surfaces. The rotating mast (2) is slidably fitted with folding forks (1). A forklift front guard (701) is provided on one side of the forklift housing (7). The folding forks (1) pass through the forklift front guard (701) and are located on the outside of the forklift housing (7). The mast rotation mechanism (3) is located on both sides of the rotating mast (2). A placement panel (4) is provided on the surface of the forklift housing (7). A rear baffle (6) located on one side of the placement panel (4) is fixedly connected to one end of the forklift housing (7). The rotating mast (2), lifting platform (5) and mast rotation mechanism (3) work together to ensure that goods are placed in an orderly manner on the placement panel (4) when placed. The folding fork (1) includes a fork plate (11), a fork back plate (12), a fork carriage (13), and a bracket rotation mechanism (14). There are two fork plates (11), two fork back plates (12), and two bracket rotation mechanisms (14). One end of each fork plate (11) is hinged to the lower end of the two fork back plates (12), and the bracket rotation mechanism (14) is placed at the bottom of the inner wall of the fork back plate (12). The two fork back plates (12) are vertically fixed on the end face of the fork carriage (13), and the two fork back plates (12) are symmetrically arranged. The fork carriage (13) is slidably fixed on the rotating mast (2). The insert rotating mechanism (14) includes an adjusting block (144), which is movably installed at the bottom of the fork back plate (12) and is located on one side of the end of the fork plate (11). The bottom cross-section of the adjusting block (144) is tapered. One end of the fork plate (11) is provided with a round boss, and the side wall of the adjusting block (144) is provided with a groove that matches the round boss on the fork plate (11). The side wall of the fork back plate (12) is movably installed with an anti-slip tooth frame (145). The side wall of the adjusting block (144) is provided with a slot that matches the anti-slip tooth frame (145). An anti-slip spring (146) is movably installed on one side of the anti-slip tooth frame (145), and the anti-slip spring (146) is located inside the fork back plate (12). One end of the anti-slip tooth frame (145) passes through the fork back plate (12) and is located on the outside of the fork back plate (12). A magnetic block (10) that magnetically attracts the anti-slip tooth frame (145) is fixedly installed on one side of the fork front guard (701).

2. A stacker truck capable of loading multiple goods according to claim 1, characterized in that: The rotating gantry (2) includes an outer gantry (21), an inner gantry (22), a sprocket fixing frame (23), a front lifting cylinder (24), a cylinder base plate (25), a rear lifting cylinder (26), a rotating shaft (27), a hinge shaft (28), and a gantry shell (29). The outer gantry (21) includes left and right channel steels. The outer gantry (21) is located on the left and right sides of the inner gantry (22), and the outer gantry (21) and the inner gantry (22) are in sliding fit. The bottom of the inner gantry (22) is provided with a cylinder base. Plate (25), the upper surface of the cylinder base plate (25) is fixed with a front lifting cylinder (24), and the front lifting cylinder (24) is located inside the inner mast (22). The upper surface of the front lifting cylinder (24) is fixed with a sprocket fixing bracket (23). The inner mast (22) is slidably fitted with a fork carriage (13). The fork carriage (13) is engaged with the sprocket fixing bracket (23) by a chain. One end of the chain is fixedly connected to the fork carriage (13), and the other end of the chain passes through the sprocket fixing bracket (23). The lower end of the fork carriage (13) is fixedly connected to the cylinder base plate (25) via a tension spring. Two rear lifting cylinders (26) are provided, symmetrically arranged on the left and right sides of the outer mast (21), with the lower end of each cylinder fixedly connected to the bottom of the outer mast (21). The upper ends of the two rear lifting cylinders (26) are fixedly connected to the upper end of the inner mast (22). Two mast shells (29) are provided. The shell (29) is symmetrically fixed on the left and right sides of the outer gantry (21), and the rear lifting cylinder (26) is located between the gantry shell (29) and the outer gantry (21). A rotating shaft (27) is fixed at the bottom of the outer side of the gantry shell (29). The rotating gantry (2) is rotatably fixed to the lifting platform (5) through the rotating shaft (27). A hinge shaft (28) is fixed at the center of the outer side of the gantry shell (29), and the rotating gantry (2) is driven by the gantry rotating mechanism (3) through the hinge shaft (28).

3. A stacker truck capable of loading multiple goods according to claim 1, characterized in that: The gantry rotation mechanism (3) includes a slider (32), a support rocker arm (31), and a hydraulic cylinder (33). The hydraulic cylinder (33) is embedded in the surface of the lifting platform (5). The extension rod of the hydraulic cylinder (33) is fixedly connected to the slider (32). The slider (32) is slidably disposed on the surface of the lifting platform (5). The upper end of the slider (32) is rotatably connected to one end of the support rocker arm (31). The other end of the support rocker arm (31) is rotatably connected to the hinge shaft (28). There are two gantry rotation mechanisms (3). The two gantry rotation mechanisms (3) are respectively disposed on the left and right sides of the rotating gantry (2).

4. A stacker truck capable of loading multiple goods according to claim 2, characterized in that: The insert rotating mechanism (14) also includes an ejector spring (141). The top of the adjusting block (144) is fixedly installed with an ejector spring (141) located in the fork back plate (12). The top of the fork back plate (12) is threadedly connected with an adjusting bolt (140). When the adjusting block (144) extends, it blocks the fork plate (11) to achieve a 90-degree angle between the fork plate (11) and the fork back plate (12). When the lifting platform (5) moves down to the lowest position, there is a gap of five to ten centimeters between the fork back plate (12) and the inner wall of the fork front guard (701). The distance between the rotation axis between the fork plate (11) and the fork back plate (12) and the top surface of the fork front guard (701) is the thickness value of the fork plate (11). The rotating shaft (27) and the rotating shaft of the fork plate (11) are arranged coaxially.

5. A stacker truck capable of loading multiple goods according to claim 4, characterized in that: The inner wall of the fork back plate (12) is movably mounted with a detection sleeve (142), and an adjusting block (144) is located inside the detection sleeve (142). The inner wall of the detection sleeve (142) is movably connected to an anti-disengagement spring (146). The anti-disengagement tooth frame (145) is located inside the detection sleeve (142), and a force limiting ball (143) is movably mounted inside the detection sleeve (142). The side wall of the adjusting block (144) is provided with a ball groove that matches the force limiting ball (143).

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