Transfer lifting appliance
By designing a transport spreader with a fixed fork body and a movable fork body hinged structure, the problem of difficulty in inserting fork teeth of thin plates and baled goods is solved, and stable clamping and efficient loading and unloading of tightly stacked goods is achieved.
Patent Information
- Application Number
- CN202422167809.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-09-04
AI Technical Summary
When loading and unloading thin sheets and baled goods, it is difficult to insert the fork teeth, which makes it difficult to achieve stable clamping, and poses a safety risk.
A transport sling is designed, using a fixed fork body and a movable fork body hinged structure, and the lifting point structure makes the fork teeth close to each other during the lifting process, and automatically releases through a closure. It is suitable for tight stacking and small upper and lower spaces.
It realizes stable clamping of thin sheets and baled goods, improves loading and unloading efficiency, and reduces operational difficulty and safety risks.
Smart Images
Figure CN223268219U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of loading and unloading equipment, in particular to a transfer sling. Background Art
[0002] When loading and unloading cargo at ports, cranes are typically used with specialized lifting gear. Cranes have a large load capacity and height, allowing them to lift containers or other cargo high up and then maneuver them into the ship's hold for loading and unloading. Due to their flexibility and quick response, cranes are particularly suitable for the rapid loading and unloading of smaller cargoes.
[0003] Currently, thinner panels, such as formwork and steel plates, are typically stacked and bundled when transported on ships. The bundles are then stacked as units in the cargo area, separated by wooden planks. For this type of transportation, a forklift-like spreader is typically used for loading and unloading. The spreader consists of a hanger frame and multiple tines below it. The hanger frame is suspended from a crane hook. The tines are inserted through the wooden planks into the gaps between the bundles, lifting the bundles as the crane lifts.
[0004] However, for thin boards, after long-term stacking, the boards are supported by wooden planks. Under the action of gravity, the middle position of the support point will become concave, and the distance between the upper and lower board bundles will become smaller, making it difficult for the forks to enter, making the adjustment operation difficult, and posing certain safety risks.
[0005] At the same time, for goods such as bags and bundles, they are usually stacked together directly without any spacing, and there is a problem that the fork tines cannot be inserted, and thus the fork tine spreader cannot be used. Summary of the Invention
[0006] The utility model provides a new transfer spreader to solve the problems that the fork tine spreader is difficult to insert during the current loading, unloading and transfer of thin plates, and that the fork tine spreader cannot be used for bundled goods.
[0007] In order to solve the above problems, the technical solution adopted by the present invention is a transfer sling, including a sling body, the sling body including a fixed fork body and a movable fork body, the fixed fork body is L-shaped and includes a first connecting frame and a first fork tine located below the first end of the first connecting frame, the movable fork body is L-shaped and includes a second connecting frame and a second fork tine located below the second end of the second connecting frame, the second end of the second connecting frame is hinged to the second end of the first connecting frame, and the first end of the second connecting frame is provided with a lifting point structure. This solution provides a new sling structure, in which the fixed fork body and the movable fork body are hinged to each other. During the lifting process, the first section of the second connecting frame is lifted up by the lifting point structure so that the first fork tine and the second fork tine are close to each other, thereby naturally clamping the cargo. When the cargo is lowered, the lifting point structure is no longer pulled, and the first fork tine and the second fork tine are relaxed. This sling realizes upper clamping and lifting, and is more suitable for cargo with small upper and lower spacing or tightly stacked cargo.
[0008] Preferably, the first connecting frame includes two parallel straight plates, the second connecting frame is hinged between the two straight plates, and the first fork tine is fixedly connected to the first ends of the two straight plates. The first fork tine and the second fork tine are aligned with each other, thereby improving clamping stability and preventing distortion of the hinge mechanism under the reaction force of the clamping force.
[0009] Preferably, weight-reducing holes are provided on the straight plate.
[0010] Preferably, two fixed forks and two movable forks are provided, and the two fixed forks are hinged to the two movable forks respectively; a first connecting plate is provided between the first connecting frames of the two fixed forks, and a second connecting plate is provided between the second connecting frames of the two movable forks. This forms a two-point clamping for the cargo, further improving the clamping stability and being more suitable for square cargo.
[0011] Preferably, the second connecting frame and the second tine form an obtuse angle; the first connecting frame and the first tine are perpendicular to each other, and the second connecting plate is located above the first connecting plate. This reduces positional interference between the fixed fork and the movable fork, while also moving the low-profile structure closer to the center of the sling, improving lifting balance.
[0012] Preferably, a closer is mounted on the bottom surface of the second connecting plate, with its contacts facing downward. A rectangular opening is provided on the first connecting plate at the location corresponding to the contact, the size of the rectangular opening being adapted to the maximum cross-sectional area of the contact. A trigger plate is also provided below the first connecting plate. The closer is triggered by lifting and lowering actions, locking the fixed and movable forks after lifting. The clamp automatically switches and maintains a released state, improving cargo loading and unloading efficiency.
[0013] It can be seen from the above technical solutions that the advantages of the present invention are that this solution designs an upper clamping sling, which uses the lifting force applied to the sling through a hinged structure to automatically clamp the goods, and is suitable for goods that are tightly stacked and have small upper and lower spacing; by providing a closer, the clamp can be automatically released and kept in an open state after the goods touch the ground, which is convenient for grabbing next time and improves the lifting efficiency; the sling structure is reasonably designed, and has higher clamping force and balance. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0015] Figure 1 It is a structural diagram of a specific implementation method of the utility model.
[0016] Figure 2 It is a side view of a specific embodiment of the present utility model.
[0017] Figure 3 for Figure 1 Enlarged view of point A in the middle.
[0018] Description of main reference numerals
[0019] 1. Fixed fork body, 1-1. First connecting frame, 1-2. First fork tine, 2. Movable fork body, 2-1. Second connecting frame, 2-2. Second fork body, 3. Suspension point structure, 4. First connecting plate, 5. Second connecting plate, 6. Closer, 6-1. Contact, 7. Trigger plate. DETAILED DESCRIPTION
[0020] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.
[0021] like Figure 1 、 2 As shown, a transport sling includes a sling body, the sling body includes a fixed fork body 1 and a movable fork body 2, the fixed fork body 1 is L-shaped, including a first connecting frame 1-1 and a first end (set Figure 2The right side of the figure is the position of the first end, the same below), the first fork tine 1-2 below the movable fork body 2 is L-shaped and includes a second connecting frame 2-1 and a second fork tine 2-2 located below the second end of the second connecting frame 2-1, the second end of the second connecting frame 2-1 is hinged to the second end of the first connecting frame 1-1, specifically, the first connecting frame 1-1 includes two parallel straight plates, and in order to reduce the overall weight, the straight plates are provided with weight-reducing holes; the second connecting frame 2-1 is hinged between the two straight plates, and the first fork tine 1-2 is fixedly connected to the first ends of the two straight plates, the fixed fork body 1 and the movable fork body 2 are respectively provided with two, and the two fixed fork bodies 1 are respectively hinged to the two movable fork bodies 2; a first connecting plate 4 is provided between the first connecting frames 1-1 of the two fixed fork bodies 1, and a second connecting plate 5 is provided between the second connecting frames 2-1 of the two movable fork bodies 2, and an obtuse angle is formed between the second connecting frame 2-1 and the second fork tine 2-2; the first connecting frame 1-1 and the first fork tine 1-2 are perpendicular to each other, and the second connecting plate 5 is located above the first connecting plate 4.
[0022] A lifting point structure 3 is provided between the first ends of the second connecting frames 2-1. Specifically, the lifting point structure 3 includes a connecting rod, the two ends of the connecting rod are respectively fixedly connected to the first ends of the two second connecting frames, and a hanging plate is provided in the middle of the connecting rod. A through hole is opened on the hanging plate for connection of hooks, slings, etc. of the lifting equipment.
[0023] It can be seen from the above structure that when lifting, the lifting point structure 3 is pulled upward, and the movable fork body rotates counterclockwise relative to the fixed fork body through the hinge structure between the fixed fork body and the movable fork body (in degrees). Figure 2 In the direction shown), the first fork tine and the second fork tine approach each other and clamp the cargo between them. At the same time, after lifting, the weight of the heavy object is equal to the lifting tension, that is, the tension exerted on the lifting point structure. Therefore, the heavier the cargo, the greater the clamping force between the first fork tine and the second fork tine, which can prevent the cargo from falling off.
[0024] Furthermore, a closer 6 is installed on the bottom surface of the second connecting plate, and the contact 6-1 of the closer 6 is set downward; a rectangular opening is provided on the first connecting plate 4 at a position corresponding to the contact 6-1, and the size of the rectangular opening is adapted to the maximum cross-sectional area of the contact 6-1. A trigger plate 7 is also provided below the first connecting plate 4. Figure 3 As shown, the trigger plate is a U-shaped folded plate, the vertical parts on both sides of which are fixedly connected to the bottom of the first connecting plate, and the horizontal part is parallel to the first connecting plate and located below it.
[0025] The closer is an existing device, comprising a main body outer cylinder, a telescopic rod provided in the main body outer cylinder, and a contact located at the outer end of the telescopic rod. The contact and the telescopic rod can be relatively telescoped relative to the main body outer cylinder under the action of an external force. Each time they are telescoped, the contact and the telescopic rod rotate 90 degrees around their own axis. Based on this principle, the sling of the utility model can maintain a released state, that is:
[0026] In the initial no-load state without clamping the cargo, the length direction of the contact is perpendicular to the long side direction of the rectangular opening, and the contact passes through the rectangular opening and is located below the first connecting plate, and then the contact pulls the first connecting plate to keep the movable fork body and the fixed fork body in the open state. When the spreader is placed on the cargo, the fixed fork body is supported by the top surface of the cargo, the movable fork body rotates clockwise, and then the closer moves down, and the closer contact is squeezed by the trigger plate, triggered to rotate, and after rotation, the shape of the contact coincides with the rectangular opening. When the spreader is lifted, the contact passes through the rectangular opening and is no longer locked, and the first fork tine can approach the second fork tine and clamp the cargo; when the cargo is put down, after the cargo touches the ground, the fixed fork body is supported by the cargo, and the movable fork body rotates clockwise here, the contact passes through the rectangular opening, is squeezed and rotated by the trigger plate again, and is locked on the first connecting plate. When the spreader is lifted again, the cargo will not be grabbed.
[0027] It can be seen from the above embodiments that the beneficial effect of the utility model is that this scheme designs an upper clamping sling, which uses the lifting force exerted on the sling through a hinged structure to automatically clamp the goods, and is suitable for goods that are tightly stacked and have small upper and lower intervals; by providing a closer, the clamp can be automatically released and kept in an open state after the goods touch the ground, which is convenient for grabbing next time and improves the lifting efficiency; the sling structure is reasonably designed, and the clamping force and balance are higher.
[0028] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A transfer sling, comprising a sling body, characterized in that: The sling body includes a fixed fork body and a movable fork body, the fixed fork body is L-shaped and includes a first connecting frame and a first fork tine located below the first end of the first connecting frame, the movable fork body is L-shaped and includes a second connecting frame and a second fork tine located below the second end of the second connecting frame, the second end of the second connecting frame is hinged to the second end of the first connecting frame, and the first end of the second connecting frame is provided with a hanging point structure.
2. The transfer spreader according to claim 1, characterized in that: The first connecting frame includes two parallel straight plates, the second connecting frame is hinged between the two straight plates, and the first fork tine is fixedly connected to the first ends of the two straight plates.
3. The transfer sling according to claim 2, characterized in that: The straight plate is provided with weight-reducing holes.
4. The transfer sling according to claim 1, characterized in that: There are two fixed fork bodies and two movable fork bodies respectively, and the two fixed fork bodies are hinged to the two movable fork bodies respectively; a first connecting plate is provided between the first connecting frames of the two fixed fork bodies, and a second connecting plate is provided between the second connecting frames of the two movable fork bodies.
5. The transfer sling according to claim 4, characterized in that: An obtuse angle is formed between the second connecting frame and the second fork tine; the first connecting frame and the first fork tine are perpendicular to each other, and the second connecting plate is located above the first connecting plate.
6. The transfer spreader according to claim 5, characterized in that: A closer is installed on the bottom surface of the second connecting plate, and the contacts of the closer are set downward; a rectangular opening is provided on the first connecting plate at the position corresponding to the contact, and the size of the rectangular opening is adapted to the maximum cross-sectional area of the contact, and a trigger plate is also provided below the first connecting plate.