A horizontal pallet changing machine

Abstract

This invention belongs to the field of pallet technology, specifically a horizontal pallet changing machine. It includes a spliced ​​and assembled pallet frame and a lifting device located at the bottom of the frame. The lifting device moves horizontally to the bottom of the pallet to be replaced and then hydraulically lifts it upwards. Finally, the lifting device lifts the bottom support plate of the material on the pallet through through holes at the four corners of the pallet. After the material on the pallet is lifted to a set height, this horizontal pallet changing machine, by using a pallet frame, can temporarily lift the material, facilitating the replacement of the bottom pallet. The use of a bottom-lifting frame not only facilitates replacement but also results in a smaller, more maneuverable, and safer device compared to a suspended structure. The lifting device enables high-pressure lifting with a small machine, making it more portable and unaffected by height compared to suspended machines.

Description

Technical Field

[0001] This invention relates to the field of warehouse pallet technology, and more particularly to a horizontal pallet changing machine. Background Technology

[0002] Pallets are horizontal platform devices used for the containerization, stacking, handling, and transportation of goods and products as unit loads. As a type of containerization equipment similar to containers, pallets are now widely used in production, transportation, warehousing, and distribution. Most pallets have a pad on top to achieve force distribution or to prevent unevenness on the pallet surface from causing indentations on the bottom of the goods after long-term stacking.

[0003] Currently, the pallets used in warehousing, especially those used for transportation, are generally of high quality to meet the requirements for easy handling and basic stress resistance during transportation. Therefore, the manufacturing cost of high-quality or specially made pallets is relatively high. As a result, when the goods arrive at their destination, the pallets need to be recycled or replaced with lower-cost pallets. At this time, it is necessary to move the goods from the high-quality pallets to the low-quality pallets, which can easily increase the workload. In particular, the workload of moving the goods little by little to the low-quality pallets is very large, and it can also increase the management cost significantly. Summary of the Invention

[0004] To address the technical problem that existing pallet replacement methods easily incur high additional costs, this invention proposes a horizontal pallet replacement machine.

[0005] The present invention proposes a horizontal pallet changing machine, which includes a spliced ​​and assembled pallet frame and a lifting device disposed at the bottom of the pallet frame.

[0006] After the lifting device moves horizontally to the bottom of the replaced pallet, it is controlled to hydraulically lift upwards. Finally, the lifting device lifts the pallet at the bottom of the material through the through holes at the four corners of the replaced pallet.

[0007] After the material on the replaced pallet is lifted to a set height, the padding frame is inserted from both sides of the replaced pallet into the lower surface of the pallet to support the material and then pulls the replaced pallet out. At the same time, the replacement pallet is inserted into the bottom of the pallet in the same direction to complete the replacement action.

[0008] Preferably, the pad frame consists of an E-shaped support rod with supporting legs and a surrounding rod that is movably inserted into the opening of the E-shaped support rod.

[0009] Preferably, in use, the E-type support rod is inserted movably from one side of the replaced tray and extends to the other side of the replaced tray, and then the surrounding rod is horizontally fitted from the other side of the replaced tray to the end through which the E-type support rod passes to complete the splicing action.

[0010] The above technical solution uses a simple structure to achieve the splicing action, which is easy to operate.

[0011] Preferably, the lifting device is controlled to move away from the through holes at the four corners of the replaced pallet to achieve a reset action. At this time, after the material is completely supported by the pad, the replaced pallet is pulled out horizontally along the length of the pad, and the replacement pallet is pushed horizontally into the bottom of the pallet in the same direction. The lifting device is then controlled to start again to hydraulically lift the pallet through the gap groove in the replacement pallet. Finally, after the pad is pulled out, the lifting device is controlled to reset to complete the pallet replacement action.

[0012] Preferably, the lifting device includes a mounting plate for integrated installation, and the upper surface of the mounting plate is equipped with a rectangular array of upward-lifting hydraulic cylinders, the array spacing between the hydraulic cylinders being the same as the spacing between the through holes at the four corners of the replaced tray.

[0013] With the above technical solution, the installation position of the hydraulic cylinder on the pallet can be changed according to the position and density of the through holes on the pallet, so as to prevent the problem of mismatch and inability to use the cylinder.

[0014] Preferably, each hydraulic cylinder is equipped with a corresponding solenoid valve for controlling the oil flow into and out of the hydraulic cylinder, and the outer end of the upper surface of the mounting plate is also provided with a hydraulic pump for driving the lifting and lowering action of the hydraulic cylinder.

[0015] The above technical solution integrates miniature hydraulic systems, making them easy to carry and use.

[0016] Preferably, the hydraulic pump draws hydraulic oil from the oil tank through oil pipes and then pumps it into the oil inlet of each hydraulic cylinder. The solenoid valve controls whether the hydraulic oil enters the hydraulic cylinder to lift the piston rod. Finally, the hydraulic oil coming out of the hydraulic cylinder outlet flows back into the oil tank through oil pipes to form a complete circuit.

[0017] The above technical solution utilizes solenoid valve assemblies to achieve precise control of each hydraulic cylinder, enabling individual control and achieving both overall and individual action.

[0018] Preferably, a rectangular lifting block is fixedly installed on the top of the piston rod of the hydraulic cylinder, and the rectangular lifting block lifts the pallet upward through the through hole on the surface of the replaced pallet, and the stroke of the hydraulic cylinder is greater than the height of the pad frame.

[0019] Through the above technical solution, the rectangular lifting block can maximize the contact area with the pallet, preventing pallet damage caused by an insufficient force-bearing area.

[0020] Preferably, the mounting plate is further provided with laser pointers at the four corners for calibrating the distribution position of the hydraulic cylinders, and the position between the mounting plate and the replaced tray is calibrated by the right-angled intersecting lines formed by the laser pointers.

[0021] The above technical solution utilizes a laser pointer to achieve precise calibration of the hydraulic cylinder, facilitating quick and easy alignment and improving efficiency.

[0022] Preferably, the replacement tray is a tray with a spacer groove formed by stacking and fixing horizontal and vertical plates at right angles, and the replacement tray is inserted into the bottom of the tray along the length of the spacer groove to complete the replacement action.

[0023] Through the above technical solutions, the pallets with slotted grooves are generally made of wood, which is low in cost, lightweight and easy to obtain. They are the most widely used pallets on the market and are also the original design of pallets, thus making this machine widely applicable.

[0024] The beneficial effects of this invention are as follows:

[0025] 1. By setting up a support frame, materials can be temporarily lifted up, making it easier to replace the bottom tray. The support frame, which lifts the materials from the bottom up, not only makes replacement easier, but also makes the equipment smaller, more maneuverable, and safer than a suspended structure.

[0026] 2. By setting up a lifting device, it is possible to achieve high-pressure lifting with small-volume equipment. Compared with hoisted machines, it is convenient to carry and is not affected by height. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a horizontal pallet changing machine proposed in this invention;

[0028] Figure 2 This is a perspective view of a lifting device for a horizontal pallet changing machine proposed in this invention.

[0029] Figure 3 This is a perspective view of the pallet structure after replacement in a horizontal pallet changing machine according to the present invention.

[0030] In the diagram: 1. Pad frame; 11. E-type support rod; 12. Enclosure rod; 2. Lifting device; 21. Mounting plate; 22. Hydraulic cylinder; 23. Solenoid valve; 24. Hydraulic pump; 25. Rectangular lifting block; 26. Laser pointer; 3. Replaced pallet; 4. Pallet; 5. Replacement pallet. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] Reference Figure 1-3 A horizontal pallet changing machine includes a spliced ​​pallet frame 1 and a lifting device 2 disposed at the bottom of the pallet frame 1.

[0033] To facilitate temporary support of materials on a pallet, the support frame 1 consists of an E-type support rod 11 with supporting legs and a retaining rod 12 that is movably inserted into the opening of the E-type support rod 11. In use, the E-type support rod 11 is inserted movably from one side of the pallet 3 being replaced and extends to the other side. Then, the retaining rod 12 is horizontally fitted from the other side of the pallet 3 to the end through which the E-type support rod 11 passes, completing the splicing action. The simple structure facilitates the splicing action and makes operation convenient.

[0034] By setting up the pad frame 1, the material can be temporarily lifted up, making it easy to replace the bottom tray. The pad frame 1, which lifts the material from the bottom up, not only makes replacement easier, but also makes the equipment smaller, more maneuverable, and safer than a suspended structure.

[0035] To accommodate most pallets, the lifting device 2 moves horizontally to the bottom of the pallet 3 being replaced and then controls the upward hydraulic lifting. Finally, the lifting device 2 lifts the pallet 4 at the bottom of the material through the through holes at the four corners of the pallet 3 being replaced.

[0036] After the material on the replacement pallet 3 is lifted to a set height, the pad 1 is inserted from both sides of the replacement pallet 3 to the lower surface of the pallet 4 to support the material and then pull out the replacement pallet 3. At the same time, the replacement pallet 5 is inserted into the bottom of the pallet 4 in the same direction to complete the replacement action.

[0037] In order to temporarily lift the material on the replacement pallet 3, the lifting device 2 is controlled to move away from the through holes at the four corners of the replacement pallet 3 to achieve the reset action. At this time, after the material is completely lifted by the pad 1, the replacement pallet 3 is pulled out horizontally along the length of the pad 1. At the same time, the replacement pallet 5 is pushed horizontally into the bottom of the pallet 4 in the same direction. The lifting device 2 is controlled to start again to hydraulically lift the pallet 4 through the gap groove in the replacement pallet 5. Finally, the pad 1 is pulled out and the lifting device 2 is controlled to reset to complete the pallet replacement action.

[0038] To lift materials from the ground, the lifting device 2 includes a mounting plate 21 for integrated installation. A rectangular array of hydraulic cylinders 22 are mounted on the upper surface of the mounting plate 21, with the array spacing between the hydraulic cylinders 22 matching the spacing between the through holes at the four corners of the pallet 3 being replaced. The mounting position of the hydraulic cylinders 22 on the pallet can be adjusted according to the position and density of the through holes on the pallet to prevent misalignment and unusability. Furthermore, the hydraulic cylinders 22 provide high and stable lifting pressure, making them suitable for heavy materials.

[0039] To facilitate the integrated control of the hydraulic cylinders 22, each hydraulic cylinder 22 is equipped with a corresponding solenoid valve 23 for controlling the oil flow into and out of the hydraulic cylinder 22. The outer end of the upper surface of the mounting plate 21 is also equipped with a hydraulic pump 24 for driving the lifting and lowering motion of the hydraulic cylinders 22. This integration of a miniature hydraulic system makes it easy to carry and use.

[0040] To form a complete hydraulic system, the hydraulic pump 24 draws hydraulic oil from the oil tank through oil pipes and then pumps it into the oil inlet of each hydraulic cylinder 22. The solenoid valve 23 controls whether the hydraulic oil enters the hydraulic cylinder 22 to lift the piston rod. Finally, the hydraulic oil exiting the hydraulic cylinder 22 flows back to the oil tank through oil pipes, forming a complete circuit. The solenoid valve 23 group achieves precise control of each hydraulic cylinder 22, providing individual control and enabling both overall and individual movement.

[0041] To increase the lifting area, a rectangular lifting block 25 is fixedly installed on the top of the piston rod of the hydraulic cylinder 22. The rectangular lifting block 25 lifts the pallet 4 upward through the through hole on the surface of the replaced pallet 3. The stroke of the hydraulic cylinder 22 is greater than the height of the pad frame 1. The rectangular lifting block 25 can maximize the contact area with the pallet and prevent the pallet from being damaged due to insufficient force area.

[0042] To facilitate quick and easy calibration of the mounting plate 21, laser pointers 26 are provided at the four corners of the mounting plate 21 for calibrating the distribution of the hydraulic cylinders 22. The right-angled lines formed by the laser pointers 26 are used to calibrate the position between the mounting plate 21 and the tray 3 being replaced. Using the laser pointers 26 enables precise calibration of the hydraulic cylinders 22, facilitating quick and easy alignment and improving efficiency.

[0043] To accommodate existing pallets on the market, the replacement pallet 5 is constructed by stacking and fixing horizontal and vertical panels at right angles to form a single pallet with slots. The replacement pallet 5 is then inserted into the bottom of the pallet 4 along the length of the slots to complete the replacement. Pallets with slots are generally made of wood, are low-cost, lightweight, and readily available, making them the most widely used pallets on the market and representing the original design of pallets. This design allows for the wide applicability of this machine.

[0044] By setting up the lifting device 2, it is possible to achieve high-pressure lifting with a small-volume machine. Compared with the hoisted machine, it is convenient to carry and is not affected by the height.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A horizontal pallet changing machine, characterized in that: It includes a spliced ​​and assembled pad frame (1) and a lifting device (2) set at the bottom of the pad frame (1). After the lifting device (2) moves horizontally to the bottom of the replaced pallet (3), it is controlled to lift upward hydraulically. Finally, the lifting device (2) lifts the pallet (4) at the bottom of the material through the through holes at the four corners of the replaced pallet (3). After the material on the replaced tray (3) is lifted to a set height, the pad (1) is inserted from both sides of the replaced tray (3) into the lower surface of the pallet (4) to padded the material and then the replaced tray (3) is pulled out. At the same time, the replacement tray (5) is inserted into the bottom of the pallet (4) in the same direction to realize the replacement action. Control the lifting device (2) to move away from the through holes at the four corners of the replaced pallet (3) to achieve the reset action. At this time, the material is completely supported by the pad (1). Then, pull the replaced pallet (3) horizontally out along the length of the pad (1). At the same time, push the replacement pallet (5) horizontally into the bottom of the pallet (4) in the same direction. Control the lifting device (2) to start again and hydraulically lift the pallet (4) through the gap groove in the replacement pallet (5). Finally, pull out the pad (1) and control the lifting device (2) to reset to complete the pallet replacement action. The lifting device (2) includes a mounting plate (21) for integrated installation. The upper surface of the mounting plate (21) is equipped with a rectangular array of upward-lifting hydraulic cylinders (22). The array spacing between the hydraulic cylinders (22) is the same as the spacing between the through holes at the four corners of the replaced tray (3). The mounting plate (21) is also provided with laser pointers (26) at the four corners for calibrating the distribution position of the hydraulic cylinders (22). The position between the mounting plate (21) and the replaced tray (3) is calibrated by the right-angled cross lines formed by the laser pointers (26).

2. The horizontal pallet changing machine according to claim 1, characterized in that: The pad frame (1) consists of an E-type support rod (11) with support legs and a surrounding rod (12) that is adapted to and movably inserted into the opening of the E-type support rod (11).

3. A horizontal pallet changing machine according to claim 2, characterized in that: In use, the E-type support rod (11) is inserted from one side of the replaced tray (3) and extends to the other side of the replaced tray (3). Then, the surrounding rod (12) is horizontally fitted from the other side of the replaced tray (3) onto the end through which the E-type support rod (11) passes to complete the splicing action.

4. A horizontal pallet changing machine according to claim 1, characterized in that: Each hydraulic cylinder (22) is equipped with a solenoid valve (23) for controlling the oil inlet and outlet of the hydraulic cylinder (22). The outer end of the upper surface of the mounting plate (21) is also equipped with a hydraulic pump (24) for driving the lifting and lowering action of the hydraulic cylinder (22).

5. A horizontal pallet changing machine according to claim 4, characterized in that: The hydraulic pump (24) draws hydraulic oil from the oil tank through the oil pipe and then pumps it into the oil inlet of each hydraulic cylinder (22). The solenoid valve (23) controls whether the hydraulic oil enters the hydraulic cylinder (22) to lift the piston rod. Finally, the hydraulic oil coming out of the oil outlet of the hydraulic cylinder (22) flows back into the oil tank through the oil pipe to form a complete circuit.

6. A horizontal pallet changing machine according to claim 5, characterized in that: A rectangular lifting block (25) is fixedly installed on the top of the piston rod of the hydraulic cylinder (22). The rectangular lifting block (25) lifts the pallet (4) upward through the through hole on the surface of the replaced pallet (3). The stroke of the hydraulic cylinder (22) is greater than the height of the pad (1).

7. A horizontal pallet changing machine according to claim 6, characterized in that: The replacement tray (5) is a tray with a spacer groove formed by stacking and fixing horizontal and vertical plates at right angles. The replacement tray (5) is inserted into the bottom of the tray (4) along the length of the spacer groove to complete the replacement action.

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