Empty tray palletizing rack

Abstract

The utility model discloses a kind of empty tray stacking rack, it is related to tray stacking technical field, including main frame body and tray, the main frame body two sides inner wall is provided with bracket, the main frame body two sides outer wall is provided with lifting frame, the lifting frame is connected with lifting system, the front end of the lifting frame is provided with undercarriage, the rear end of the lifting frame is provided with push-pull cylinder, the telescopic end of the push-pull cylinder is provided with electromagnet;Magnetic suction end is provided on the tray, the magnetic suction end with the electromagnet magnetic suction cooperation;The bottom plate of the tray two sides with the undercarriage, the bracket sliding contact cooperation is matched.The utility model is matched with the cooperation of lifting system, push-pull cylinder, electromagnet and tray, realizes the automatic loading and unloading work of tray, and even if it needs to store to high layer also can not cause safety hazard to staff.

Description

Technical Field

[0001] This utility model relates to the field of pallet palletizing technology, and in particular to an empty pallet pallet palletizing rack. Background Technology

[0002] In the warehousing and logistics industry, pallets are often used for handling and stacking goods. After use, the pallets need to be stacked to save storage space. Conventional empty pallet stacking racks store empty pallets from low to high. Empty pallets at the bottom can be taken out directly, but empty pallets at the top are very inconvenient to take out, and there are also safety hazards such as falling and damage or even accidental injury to workers. A logistics pallet storage rack for easy retrieval is disclosed in patent publication number CN218560008U, including a U-shaped frame, N sets of storage units, and two sets of lifting mechanisms. The N sets of storage units are arranged sequentially from top to bottom inside the U-shaped frame. Each storage unit includes two support plates, which are respectively installed on the left and right sides of the inner wall of the U-shaped frame. M support wheels are installed sequentially from front to back on the support plates. This utility model uses a drive component to drive the lifting plate and the pallet to rise, thereby raising the lifting plate to a suitable position and aligning the top of the pulley with the bottom of the pallet. Then, the worker pushes the pallet to move it from the support wheels onto the pulley. The pulleys on both sides support the two sides of the pallet respectively. The drive component drives the lifting plate and the pallet to descend, thereby moving the pallet to a lower position for easy retrieval by the worker. Although the device is designed with a lifting mechanism to raise the pallet to a higher position, it still requires manual pushing of the pallet from the lifting plate onto the support wheels of the support plate. When stored on the support plate at a higher level, it is not only inconvenient to store or retrieve, but also poses a safety hazard to the staff. Utility Model Content

[0003] The purpose of this utility model is to provide an empty pallet stacking rack that solves the problem mentioned in the background art of the comparative patent that requires manual pushing of pallets from the lifting plate to the support plate, and that it is still inconvenient to store or retrieve pallets when they are stored on the support plate at a higher level.

[0004] The present invention adopts the following technical solution:

[0005] This utility model discloses an empty pallet stacking rack, comprising a main frame and pallets. Support frames are provided on the inner walls of both sides of the main frame, and lifting frames are provided on the outer walls of both sides of the main frame. The lifting frames are connected to a lifting system. A lifting frame is provided at the front end of the lifting frame, and a push-pull cylinder is provided at the rear end of the lifting frame. An electromagnet is provided at the telescopic end of the push-pull cylinder.

[0006] The tray is provided with a magnetic end, which is magnetically attracted to the electromagnet.

[0007] The bottom plates on both sides of the tray slide in contact with the landing gear and the support frame.

[0008] Preferably, the support frame is provided with a groove, and a rolling component is provided in the groove.

[0009] Preferably, the rolling assembly includes a rolling ball, the groove is provided with a plurality of ball holes, and the rolling ball is rotatably disposed within the ball holes.

[0010] Preferably, the landing gear structure is the same as the support frame structure.

[0011] Preferably, the pallet includes multiple horizontal plates and two side plates, the horizontal plates are fixedly connected together perpendicular to the side plates, and a reinforcing vertical plate is also provided in the middle of the horizontal plate;

[0012] The thickness of the side plate is greater than the thickness of the horizontal plate, and the top surface of the horizontal plate is flush with the top surface of the side plate.

[0013] The bottom surface of the side plate is set as an arc-shaped surface, and the bottom surface of the side plate makes rolling contact with the ball.

[0014] The magnetic end is disposed on the first horizontal plate facing the main frame.

[0015] Preferably, vertically arranged guide slides are provided on both outer walls of the main frame, and the lifting frame is slidably disposed within the guide slides;

[0016] An auxiliary slide groove is provided on the side of the guide carriage away from the main frame, and a fixed column is provided on the lifting frame, the fixed column being slidably disposed in the auxiliary slide groove.

[0017] Preferably, the lifting system includes a motor, a transmission shaft, a first wire reel, a wire, a pulley, and a second wire reel, all mounted on the top of the main frame.

[0018] The first wire reel and the second wire reel are rotatably mounted on both sides of the top of the main frame. The first wire reel and the second wire reel are wound with wires at both ends. The other end of the wire passes through the pulley and is fixedly connected to the lifting frame.

[0019] The motor is provided with an output shaft, a first transmission pulley is provided in the middle of the output shaft, and a second transmission pulley is provided in the middle of the first wire coil. The first transmission pulley and the second transmission pulley are connected by a first transmission belt.

[0020] The output shaft is provided with a first gear at its end. The transmission shaft is rotatably mounted on the top of the main frame. A second gear is provided at one end of the transmission shaft. The second gear is identical to and meshes with the first gear. A third transmission pulley is provided in the middle of the transmission shaft. A fourth transmission pulley is provided on the second wire reel. The third transmission pulley and the fourth transmission pulley are connected by a second transmission belt.

[0021] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0022] This invention utilizes a lifting system designed into the main frame to enable the push-pull cylinder and landing gear to lift and lower together. After the push-pull cylinder extends, the electromagnet at the front end of the cylinder attracts the pallet, thus transferring the pallet from the landing gear to the support frame. This achieves automatic loading and unloading of the pallet, and even when it needs to be stored at high levels, it will not pose a safety hazard to the staff. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the empty pallet stacking rack structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the pallet structure in the empty pallet stacking rack of this utility model;

[0026] Figure 3 This is a schematic diagram of the support frame structure in the empty pallet stacking rack of this utility model;

[0027] Figure 4 This is a schematic diagram of the lifting system structure in the empty pallet stacking rack of this utility model;

[0028] Figure 5 This is a schematic diagram of the working state of the empty pallet stacking rack of this utility model.

[0029] Explanation of reference numerals in the attached drawings: 1. Main frame; 1-1. Guide carriage; 1-2. Auxiliary slide; 2. Support frame; 2-1. Groove; 2-2. Rolling assembly; 2-2-1. Rolling ball; 2-2-2. Ball hole; 3. Lifting frame; 3-1. Fixed column; 4. Landing gear; 4-1. Arc end; 5. Push-pull cylinder; 6. Electromagnet; 7. Tray; 7-1. Magnetic end; 7-2. Side plate; 7-3. Horizontal plate; 7-4. Reinforcing vertical plate; 8. Lifting system; 8- 1. Motor; 8-1-1. Output shaft; 8-1-2. First transmission pulley; 8-1-3. First gear; 8-2. Transmission shaft; 8-2-1. Second gear; 8-2-2. Third transmission pulley; 8-3. First wire reel; 8-3-1. Second transmission pulley; 8-3-2. First transmission belt; 8-4. Wire; 8-5. Pulley; 8-6. Second wire reel; 8-6-1. Fourth transmission pulley; 8-6-2. Second transmission belt. Detailed Implementation

[0030] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] like Figure 1 and Figure 2 As shown, this embodiment discloses an empty pallet stacking rack, including a main frame 1 and pallets 7. The front and rear sides of the main frame 1 are both open structures. Multiple rows of paired support frames 2 are provided on the inner walls of both sides of the main frame 1, and lifting frames 3 are provided on the outer walls of both sides of the main frame 1. The lifting frames 3 are connected to the lifting system 8. The front end of each of the two lifting frames 3 is provided with a lifting gear 4. A frame is provided between the rear ends of the two lifting frames 3. A push-pull cylinder 5 is provided on the frame. An electromagnet 6 is fixedly connected to the telescopic end of the push-pull cylinder 5. When the push-pull cylinder 5 extends, it can extend the electromagnet 6 from the rear opening to the front opening of the main frame 1.

[0032] The pallet 7 is equipped with a magnetic end 7-1, which is an iron plate. The iron plate is fixed to the pallet 7 with screws. The magnetic end 7-1 is magnetically attracted to the electromagnet 6. The bottom plates on both sides of the pallet 7 are in sliding contact with the landing gear 4 and the support frame 2.

[0033] During operation, the lifting system 8 is used to lower the lifting frame 3 and landing gear 4 to their lowest positions. Then, the tray 7 is placed on the two landing gears 4. The lifting system 8 is used to raise the lifting frame 3 and landing gear 4 to the support frame 2 at a suitable height and then stops the lifting. At this time, the push-pull cylinder 5 is extended until the electromagnet 6 at the end of the extension and retraction end of the push-pull cylinder 5 contacts the magnetic end 7-1 of the tray 7. The switch of the electromagnet 6 is turned on to control the electromagnet 6 to generate magnetic force, which can attract the tray 7. Then, the push-pull cylinder 5 is shortened to pull the tray 7 onto the support frame 2. Once the tray 7 has completely moved onto the support frame 2, the switch of the electromagnet 6 is turned off to make its magnetic force disappear. The push-pull cylinder 5 and the tray 7 no longer attract each other. The lifting system 8 is then controlled to lower the lifting frame 3 and landing gear 4 back to their lowest positions to continue working.

[0034] It should be noted that in this embodiment, the height of electromagnet 6 needs to be consistent with the height of tray 7 on landing gear 4. In this embodiment, electromagnet 6 is a mature existing technology that can be purchased directly online. For example, the KK-P30 / 22DC24V DC suction cup electromagnet from Yueqing Kaka Electric Co., Ltd. has a suction power of 15KG and a compact size with a diameter of 30mm and a height of 22mm, which is sufficient to drag tray 7 from landing gear 4 to support frame 2. In specific work, a suitable electromagnet can be selected according to the actual working scenario.

[0035] like Figure 1 As shown, two vertically arranged guide slides 1-1 are provided on both outer walls of the main frame 1, and the lifting frame 3 is slidably disposed within the guide slides 1-1. An auxiliary slide groove 1-2 is also provided on the side of the guide slide 1-1 away from the main frame 1, and a fixing column 3-1 is provided on the lifting frame 3, which is slidably disposed within the auxiliary slide groove 1-2. When the lifting frame 3 slides up and down, the guide slides 1-1 and the auxiliary slide groove 1-2 work together to provide guidance.

[0036] like Figure 2 and Figure 3 As shown, the support frame 2 is provided with a groove 2-1, which has an arc-shaped structure. A rolling component 2-2 is provided inside the groove 2-1. The rolling component 2-2 includes a rolling ball 2-2-1. Multiple ball holes 2-2-2 are provided on the arc-shaped surface of the groove 2-1, and the rolling ball 2-2-1 is freely rolled inside the ball holes 2-2-2.

[0037] In this embodiment, the landing gear 4 structure is exactly the same as the support frame 2 structure. The tray 7 includes multiple horizontal plates 7-3 and two side plates 7-2. The horizontal plates 7-3 are arranged perpendicular to the side plates 7-2 and are fixedly connected together. A reinforcing vertical plate 7-4 is also provided in the middle of the horizontal plate 7-3. The thickness of the side plate 7-2 is greater than the thickness of the horizontal plate 7-3, and the top surface of the horizontal plate 7-3 is flush with the top surface of the side plate 7-2. The bottom surface of the side plate 7-2 is set as an arc-shaped surface that mates with the groove 2-1, and the bottom surface of the side plate 7-2 makes rolling contact with the ball 2-2-1. The magnetic end 7-1 is provided on the first horizontal plate 7-3 facing the main frame 1.

[0038] When placing the tray 7, place the two side plates 7-2 on the grooves of the landing gear 4. After the landing gear 4 is raised to a suitable height, the push-pull cylinder 5 pulls the tray 7. The arc-shaped bottom surface of the side plate 7-2 rolls along the ball 2-2-1 to reduce friction, so that the side plate 7-2 can easily slide from the landing gear 4 onto the support frame 2.

[0039] like Figure 4 As shown, the lifting system 8 includes a motor 8-1, a transmission shaft 8-2, a first wire reel 8-3, a wire 8-4, a pulley 8-5, and a second wire reel 8-6, all mounted on the top of the main frame 1.

[0040] The first wire reel 8-3 and the second wire reel 8-6 ​​are rotatably mounted on both sides of the top of the main frame 1, and are parallel to the side walls of the main frame 1. Each end of the first wire reel 8-3 and the second wire reel 8-6 ​​is provided with a wire 8-4. One end of the wire 8-4 is fixedly connected to the first wire reel 8-3 and the second wire reel 8-6 ​​and wound several times, while the other end of the wire 8-4 passes through a pulley 8-5 and is fixedly connected to the lifting frame 3. Two wires 8-4 on each side suspend the lifting frame 3. When the first wire reel 8-3 and the second wire reel 8-6 ​​rotate, the lifting frame 3 can be raised or lowered. It should be noted that in this embodiment, the winding directions of the wires 8-4 on the first wire reel 8-3 and the second wire reel 8-6 ​​are opposite, and the released lengths of the wires 8-4 are the same to ensure that the heights of the lifting frames 3 on both sides are the same.

[0041] The motor 8-1 is equipped with an output shaft 8-1-1, and a first transmission pulley 8-1-2 is fixedly mounted in the middle of the output shaft 8-1-1. A second transmission pulley 8-3-1 is fixedly mounted in the middle of the first wire reel 8-3. The first transmission pulley 8-1-2 and the second transmission pulley 8-3-1 are connected by a first transmission belt 8-3-2. When the motor 8-1 rotates, the first transmission pulley 8-1-2, the first transmission belt 8-3-2, and the second transmission pulley 8-3-1 drive the first wire reel 8-3 to rotate, thereby achieving the winding or unwinding of the wire 8-4.

[0042] A first gear 8-1-3 is fixedly installed at the end of the output shaft 8-1-1. The transmission shaft 8-2 is rotatably installed on the top of the main frame 1. A second gear 8-2-1 is fixedly installed at one end of the transmission shaft 8-2. The second gear 8-2-1 is exactly the same as the first gear 8-1-3 and is meshed together. A third transmission pulley 8-2-2 is fixedly installed in the middle of the transmission shaft 8-2. A fourth transmission pulley 8-6-1 is fixedly installed on the second wire coil 8-6. The third transmission pulley 8-2-2 and the fourth transmission pulley 8-6-1 are connected by a second transmission belt 8-6-2.

[0043] Among them, the output shaft 8-1-1 and the transmission shaft 8-2 have the same diameter; the four pulleys, namely the first transmission pulley 8-1-2, the second transmission pulley 8-3-1, the third transmission pulley 8-2-2, and the fourth transmission pulley 8-6-1, are of the same specification and size to ensure the same rotational speed; the first wire reel 8-3 and the second wire reel 8-6 ​​are also of the same specification and size, and the winding radius of the wire 8-4 on the first wire reel 8-3 and the second wire reel 8-6 ​​is also the same to ensure the same rotational speed and the same unwinding speed. When the motor 8-1 rotates, it drives the transmission shaft 8-2 to rotate in the opposite direction with the help of the first gear 8-1-3 and the second gear 8-2-1. The transmission shaft 8-2 drives the second wire reel 8-6 ​​to rotate with the help of the third transmission pulley 8-2-2, the second transmission belt 8-6-2 and the fourth transmission pulley 8-6-1. The second wire reel 8-6 ​​rotates in the opposite direction to the motor 8-1, that is, in the opposite direction to the first wire reel 8-3. This enables the lifting frames 3 on both sides of the main frame 1 to rise or fall synchronously and move at the same speed.

[0044] like Figure 5 As shown, in this embodiment, the front end of the landing gear 4 is provided with an upward-curved arc end 4-1 to prevent the tray 7 from accidentally sliding to the outside of the main frame 1 during the lifting process; and the end of the landing gear 4 away from the arc end 4-1 is slightly raised at a certain angle (5 degrees to 13 degrees) to prevent the tray 7 from accidentally sliding to the inside of the main frame 1 during the lifting process.

[0045] like Figures 1 to 5 As shown, the operation process of this utility model is as follows:

[0046] First, using the lifting system 8, the lifting frame 3 and landing gear 4 are placed at their lowest positions. Then, the two side plates 7-2 of the tray 7 are placed on the grooves of the landing gear 4. After lifting to the appropriate height (i.e., when the landing gear 4 is aligned with the support frame 2), the push-pull cylinder 5 is extended until the electromagnet 6 contacts the magnetic end 7-1 of the tray 7. The switch of the electromagnet 6 is turned on to generate magnetic force, which attracts the tray 7. Then, the push-pull cylinder 5 is shortened. When the push-pull cylinder 5 pulls the tray 7, the arc-shaped bottom surface of the side plate 7-2 rolls along the ball 2-2-1, allowing it to slide from the landing gear 4 onto the support frame 2. Once the tray 7 has completely moved onto the support frame 2, the switch of the electromagnet 6 is turned off, causing its magnetic force to disappear. The push-pull cylinder 5 and the tray 7 no longer attract each other. The lifting system 8 is then used to lower the lifting frame 3 and landing gear 4 back to their lowest positions to continue the next lifting operation.

[0047] When pallet 7 needs to be unloaded, the landing gear 4 is initially empty. The lifting system 8 raises the lifting frame 3 and landing gear 4 to the position of the support frame 2, keeping the control electromagnet 6 in the off state with no magnetic force. The control push-pull cylinder 5 extends. During the extension process, the electromagnet 6, without magnetic force, presses against the pallet 7 and gradually pushes the pallet 7 from the support frame 2 onto the landing gear 4. Once the pallet 7 is completely moved onto the landing gear 4, the control push-pull cylinder 5 retracts. Then, the lifting system 8 lowers the lifting frame 3 and landing gear 4 to their lowest position to remove the pallet 7. It should be noted that when the push-pull cylinder 5 extends, the speed should be slow and uniform, and not too fast, to avoid the pallet 7 falling due to inertia.

[0048] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An empty pallet racking shelf, characterized by: Includes a main frame (1) and a tray (7). Support frames (2) are provided on the inner walls of both sides of the main frame (1). Lifting frames (3) are provided on the outer walls of both sides of the main frame (1). The lifting frames (3) are connected to the lifting system (8). A landing gear (4) is provided at the front end of the lifting frame (3). A push-pull cylinder (5) is provided at the rear end of the lifting frame (3). An electromagnet (6) is provided at the telescopic end of the push-pull cylinder (5). The tray (7) is provided with a magnetic end (7-1), which is magnetically attracted to the electromagnet (6); The bottom plates on both sides of the tray (7) are in sliding contact with the landing gear (4) and the support frame (2).

2. The empty tray palletizing rack of claim 1, wherein: The support frame (2) is provided with a groove (2-1), and a rolling component (2-2) is provided in the groove (2-1).

3. The empty tray palletizing rack of claim 2, wherein: The rolling assembly (2-2) includes a rolling ball (2-2-1), and the groove (2-1) is provided with a plurality of ball holes (2-2-2). The rolling ball (2-2-1) is rotatably disposed in the ball holes (2-2-2).

4. The empty tray palletizing rack of claim 3, wherein: The landing gear (4) has the same structure as the support frame (2).

5. The empty tray palletizing rack of claim 4, wherein: The tray (7) includes multiple horizontal plates (7-3) and two side plates (7-2). The horizontal plates (7-3) are fixedly connected together perpendicular to the side plates (7-2). A reinforcing vertical plate (7-4) is also provided in the middle of the horizontal plate (7-3). The thickness of the side plate (7-2) is greater than the thickness of the horizontal plate (7-3), and the top surface of the horizontal plate (7-3) is flush with the top surface of the side plate (7-2). The bottom surface of the side plate (7-2) is set as an arc surface, and the bottom surface of the side plate (7-2) makes rolling contact with the ball (2-2-1); The magnetic end (7-1) is located on the first horizontal plate (7-3) facing the main frame (1).

6. The empty tray palletizing rack of claim 1, wherein: The main frame (1) is provided with vertically arranged guide slides (1-1) on both outer walls, and the lifting frame (3) is slidably disposed in the guide slides (1-1); The guide slide (1-1) has an auxiliary slide groove (1-2) on one side away from the main frame (1), and a fixed column (3-1) is provided on the lifting frame (3), and the fixed column (3-1) is slidably disposed in the auxiliary slide groove (1-2).

7. The empty pallet stacking rack according to claim 1, characterized in that: The lifting system (8) includes a motor (8-1), a transmission shaft (8-2), a first wire reel (8-3), a wire (8-4), a pulley (8-5), and a second wire reel (8-6) installed on the top of the main frame (1). The first wire reel (8-3) and the second wire reel (8-6) are rotatably mounted on both sides of the top of the main frame (1). The first wire reel (8-3) and the second wire reel (8-6) are both wound with the wire (8-4). The other end of the wire (8-4) passes through the pulley (8-5) and is fixedly connected to the lifting frame (3). The motor (8-1) is provided with an output shaft (8-1-1), and a first transmission pulley (8-1-2) is provided in the middle of the output shaft (8-1-1). A second transmission pulley (8-3-1) is provided in the middle of the first wire coil (8-3). The first transmission pulley (8-1-2) and the second transmission pulley (8-3-1) are connected by a first transmission belt (8-3-2). The output shaft (8-1-1) is provided with a first gear (8-1-3) at its end. The transmission shaft (8-2) is rotatably mounted on the top of the main frame (1). A second gear (8-2-1) is provided at one end of the transmission shaft (8-2). The second gear (8-2-1) is identical to the first gear (8-1-3) and is meshed with it. A third transmission pulley (8-2-2) is provided in the middle of the transmission shaft (8-2). A fourth transmission pulley (8-6-1) is provided on the second wire reel (8-6). The third transmission pulley (8-2-2) and the fourth transmission pulley (8-6-1) are connected by a second transmission belt (8-6-2).

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