A ground hoist

Abstract

This utility model relates to a ground lifting machine, including a lifting frame, a loading platform, and a lifting mechanism. The lifting frame includes a vertical frame and a top frame, with two vertical frames spaced apart horizontally. The top frame is connected to the upper ends of the two vertical frames. Each vertical frame is equipped with a lifting frame. The loading platform is positioned between the two vertical frames and fixedly connected to the two lifting frames. The lifting mechanism is mounted on the top frame and drives the two lifting frames to lift synchronously. It also includes a centering mechanism symmetrically distributed within the two lifting frames. This utility model, by incorporating the centering mechanism, automatically centers the goods on the loading platform, ensuring stable centering during lifting and transport, and preventing uneven loading and tipping. The lifting mechanism uniformly drives the two lifting frames, ensuring synchronous and smooth lifting, and preventing jamming or tilting.

Description

Technical Field

[0001] This utility model relates to the field of warehousing and logistics equipment technology, and in particular to a ground lifting machine. Background Technology

[0002] Pallets are widely used as standardized, unitized load-bearing tools in logistics warehousing, manufacturing, and cargo transfer. Efficiently and safely transferring palletized goods between equipment at different heights (such as racks, trucks, and production lines) and the ground is one of the core operational processes.

[0003] Currently, common pallet handling and stacking equipment mainly includes manual hydraulic pallet jacks (commonly known as "pallet jacks") and forklifts (including electric stackers, counterbalance forklifts, etc.). However, in scenarios involving lifting palletized goods from the ground to a certain height (usually matched with forklift forks or specific equipment interfaces), the following technical limitations exist: using large forklifts for lifting is costly and inflexible; simple lifting platforms, while capable of raising and lowering, lack automatic pallet centering functionality. After placing the pallet with a pallet jack, operators need to manually adjust its position repeatedly to ensure smooth forklift pickup, which is inefficient and carries the risk of inaccurate positioning, goods tipping over, or collisions during forklift pickup.

[0004] Chinese utility model patent CN219839413U discloses a pallet jack lift for cage carts. By using a customized pallet positioned at a low position, the height difference between the customized pallet and the ground is reduced, making it easier to push the cage cart directly onto the customized pallet. At the same time, baffles that restrict horizontal movement and prevent tipping are added to the customized pallet, improving the stability of the cage cart. The chain-driven lifting mechanism and single-sided conveying mechanism enable the smooth lifting and movement of the cage cart. However, the position of the cage cart on the customized pallet may be offset, which may lead to the risk of uneven loading, jamming or tipping during subsequent conveying or stacking, affecting the stability and safety of automated operation. Utility Model Content

[0005] The purpose of this invention is to provide a ground lifting machine to solve the problems mentioned in the background art.

[0006] The above-mentioned objective of this utility model is achieved through the following technical solution: a ground lifting machine, including a lifting frame, a cargo platform and a lifting mechanism, wherein the lifting frame includes a vertical frame and a top frame, the two vertical frames are distributed left and right at intervals, and the top frame is connected to the upper end of the two vertical frames. Each of the vertical frames is provided with a lifting frame, and the loading platform is located between the two vertical frames and is fixedly connected to the two lifting frames. The lifting mechanism is mounted on the top frame and drives the two lifting frames to rise and fall synchronously. It also includes a centering mechanism for centering the goods on the loading platform, which is symmetrically distributed within the left and right lifting frames.

[0007] Preferably, the centering mechanism includes a centering bracket and a centering drive assembly. The centering bracket is movably mounted on the lifting frame via a slide rail, and the centering drive assembly drives the centering bracket to move back and forth above the loading platform.

[0008] Preferably, the centering drive assembly includes a rack fixed on the centering bracket, a drive motor mounted on the lifting frame, and a gear disposed on the output shaft of the drive motor, wherein the gear meshes with the rack.

[0009] Preferably, a push rod is provided at one end of the centering bracket facing the loading platform, and the length of the push rod is greater than the width of the centering bracket.

[0010] Preferably, the loading platform is a horizontally arranged flat plate, and vertical side plates are provided on the left and right sides of the flat plate.

[0011] Preferably, the front and rear ends of the side plate are connected to the lifting frame via connecting seats.

[0012] Preferably, the connecting seat is a downwardly curved arc structure, with its lower end connected to the side plate and its upper end connected to the lifting frame.

[0013] Preferably, the lifting mechanism includes a lifting motor, a lifting chain, an upper drive sprocket, and a lower drive sprocket. A drive shaft is respectively provided above the two vertical frames. The upper drive sprocket is located at both ends of the drive shaft. The lower drive sprocket is located at the bottom of the vertical frame. The lifting chain connects the upper drive sprocket and the lower drive sprocket and is connected to the lifting frame. The lifting motor is located between the two drive shafts and drives the two drive shafts to rotate through a chain drive assembly.

[0014] The beneficial effects of this utility model are: This utility model automatically centers the goods on the loading platform by setting a centering mechanism, ensuring that the goods are centered and stable during lifting and transportation, and avoiding uneven loading and tipping. The lifting mechanism drives the lifting frames on both sides in a unified manner to ensure that the lifting process is synchronized and stable, and to avoid jamming or tilting. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the lifting mechanism in an embodiment of this utility model; Figure 3 This is a schematic diagram of the centering mechanism in an embodiment of this utility model; Figure 4 This is a schematic diagram of the structure of the loading platform in an embodiment of this utility model; In the diagram: 1-Lifting frame, 101-Vertical frame, 102-Top frame, 2-Loading platform, 201-Side plate, 3-Lifting frame, 4-Lifting mechanism, 401-Lifting motor, 402-Drive shaft, 403-Upper drive sprocket, 404-Lower drive sprocket, 405-Lifting chain, 406-Chain drive assembly, 5-Centering mechanism, 501-Centering bracket, 502-Push rod, 503-Slide rail, 504-Rack, 505-Drive motor, 6-Connecting seat. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings.

[0017] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present utility model.

[0018] Example: like Figure 1-4 As shown, this embodiment provides a ground lifting machine, including a lifting frame 1, a loading platform 2, a lifting frame 3, a lifting mechanism 4, and a centering mechanism 5.

[0019] The lifting frame 1 consists of two vertical frames 101 and a top frame 102. The two vertical frames 101 are spaced apart on the left and right, and the top frame 102 is fixedly connected to the upper end of the two vertical frames 101 to form a gate-shaped structure.

[0020] Each vertical frame 101 has a lifting frame 3 installed on its inner side. The lifting frame 3 can slide up and down along the vertical frame 101. The two are installed by vertical guide rails and guide wheels. The loading platform 2 is set between the two vertical frames 101, and its left and right sides are fixedly connected to the two lifting frames 3 respectively, so that it can rise and fall synchronously with the lifting frames 3.

[0021] like Figure 2 and Figure 3As shown, the lifting mechanism 4 is mounted on the top frame 102 and is used to drive the two lifting frames 3 to lift synchronously. Specifically, the lifting mechanism 4 includes a lifting motor 401, a drive shaft 402, an upper drive sprocket 403, a lower drive sprocket 404, a lifting chain 405, and a chain drive assembly 406. A drive shaft 402 is respectively mounted above the two vertical frames 101, and each drive shaft 402 has an upper drive sprocket 403 at both ends. The lower drive sprocket 404 is located at the bottom of the vertical frame 101. The lifting chain 405 connects the upper drive sprocket 403 and the lower drive sprocket 404 and is connected to the lifting frame 3.

[0022] The lifting motor 401 is positioned between two drive shafts 402 and drives the two drive shafts 402 to rotate synchronously via a chain drive assembly 406, thereby driving the lifting chain 405 to move and realize the lifting of the lifting frame 3 and the loading platform 2. The chain drive assembly 406 consists of conventional multi-row sprockets and multiple chains. The multi-row sprockets are mounted on the output shaft of the lifting motor 401, and the chains connect the multi-row sprockets to the sprockets located on the drive shafts 402.

[0023] The centering mechanism 5 is used to center the goods on the loading platform 2, ensuring the stability of the goods during lifting. The centering mechanism 5 is symmetrically distributed within the left and right lifting frames 3. Specifically, as shown... Figure 3 As shown, the centering mechanism 5 includes a centering bracket 501 and a centering drive assembly. The centering bracket 501 is movably mounted on the lifting frame 3 via a slide rail 503.

[0024] The centering drive assembly includes a rack 504 fixed on the centering bracket 501, a drive motor 505 mounted on the lifting frame 3, and a gear (not shown in the figure) disposed on the output shaft of the drive motor 505, which meshes with the rack 504. The drive motor 505 drives the centering bracket 501 to move back and forth above the loading platform 2 through the rack and pinion transmission, thereby realizing the centering of the goods.

[0025] In order to push the goods more effectively, a push rod 502 is provided at one end of the centering bracket 501 facing the loading platform 2. The length of the push rod 502 is greater than the width of the centering bracket 501, so that it can better contact and push the goods.

[0026] like Figure 4 As shown, the loading platform 2 is a horizontally arranged flat plate with vertical side plates 201 on both sides to prevent goods from sliding off. The front and rear ends of the side plates 201 are connected to the lifting frame 3 via connecting seats 6. The connecting seats 6 are downwardly curved arc structures, with their lower ends connected to the side plates 201 and their upper ends connected to the lifting frame 3. This arc-shaped design effectively disperses stress and improves the strength and stability of the connection.

[0027] The ground hoist in this embodiment, by setting a centering mechanism 5, can center the goods before lifting them, ensuring that the goods remain stable during the lifting process, avoiding the goods from tilting or slipping, and improving the safety and efficiency of the lifting operation.

Claims

1. A ground lifting machine, comprising a lifting frame (1), a loading platform (2), and a lifting mechanism (4), characterized in that: The lifting frame (1) includes a vertical frame (101) and a top frame (102). The two vertical frames (101) are distributed with a left-right interval, and the top frame (102) is connected to the upper end of the two vertical frames (101). Each of the vertical frames (101) is provided with a lifting frame (3), and the loading platform (2) is located between the two vertical frames (101) and is fixedly connected to the two lifting frames (3); The lifting mechanism (4) is mounted on the top frame (102) and drives the two lifting frames (3) to lift synchronously. It also includes a centering mechanism (5) for centering the goods on the loading platform (2), the centering mechanism (5) being symmetrically distributed in the left and right lifting frames (3).

2. A ground hoist as claimed in claim 1, characterised in that: The centering mechanism (5) includes a centering bracket (501) and a centering drive assembly. The centering bracket (501) is movably mounted on the lifting frame (3) via a slide rail (503). The centering drive assembly drives the centering bracket (501) to move back and forth above the loading platform (2).

3. A ground hoist as claimed in claim 2, characterised in that: The centering drive assembly includes a rack (504) fixed on the centering bracket (501), a drive motor (505) mounted on the lifting frame (3), and a gear disposed on the output shaft of the drive motor (505), the gear meshing with the rack (504).

4. A ground hoist as claimed in claim 2, characterised in that: The centering bracket (501) is provided with a push rod (502) at one end facing the loading platform (2), and the length of the push rod (502) is greater than the width of the centering bracket (501).

5. A ground hoist according to claim 1, characterized in that: The loading platform (2) is a horizontally arranged flat plate, and vertical side plates (201) are provided on the left and right sides of the flat plate.

6. A ground hoist according to claim 5, characterized in that: The front and rear ends of the side plate (201) are connected to the lifting frame (3) via connecting seats (6).

7. A ground hoist according to claim 6, characterized in that: The connecting seat (6) is a downwardly curved arc structure. The lower end of the connecting seat (6) is connected to the side plate (201), and its upper end is connected to the lifting frame (3).

8. A ground hoist according to claim 1, characterized in that: The lifting mechanism (4) includes a lifting motor (401), a lifting chain (405), an upper drive sprocket (403), and a lower drive sprocket (404). A drive shaft (402) is respectively provided above the two vertical frames (101). The upper drive sprocket (403) is located at both ends of the drive shaft (402), and the lower drive sprocket (404) is located at the bottom of the vertical frame (101). The lifting chain (405) is connected between the upper drive sprocket (403) and the lower drive sprocket (404) and is connected to the lifting frame (3). The lifting motor (401) is located between the two drive shafts (402) and drives the two drive shafts (402) to rotate through the chain drive assembly (406).

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