Weighing lifting appliance for gantry crane

Abstract

The utility model relates to the technical field of gantry cranes, in particular to a weighing lifting appliance for a gantry crane, which comprises a bottom plate, a plurality of mounting sleeves are uniformly and fixedly mounted at the top of the bottom plate, a movable rod is slidably arranged at the top of each mounting sleeve, a limiting rod is fixedly mounted at the bottom of each movable rod, and a top plate is fixedly mounted at the tail end of the top of each movable rod. A plurality of telescopic rods are evenly and fixedly installed on the top of the top plate, fixing plates are fixedly installed at the tail ends of telescopic arms of the telescopic rods, installation discs are rotationally arranged on the tops of the fixing plates through bearings, and hanging rings are fixedly installed on the tops of the installation discs. According to the device, the movable rod slides in the mounting sleeve and is matched with the limiting rod, the limiting plate and the first spring, when the gantry crane lifts goods, the first spring is stressed and compressed to generate counter-acting force, the force generated in the lifting process can be effectively reduced, interference of external force on the weighing result is reduced, and therefore the weighing precision and stability are improved.

Description

Technical Field

[0001] This utility model relates to the field of gantry crane technology, specifically a weighing and lifting device for gantry cranes. Background Technology

[0002] In modern industrial production and logistics, gantry cranes, as important lifting equipment, are widely used in cargo loading, unloading, and transshipment. With their powerful lifting capacity and flexible operation, they greatly improve the efficiency of cargo handling and play an indispensable role in ports, docks, warehouses, and various production workshops. Accurately determining the weight of goods during lifting is crucial. On the one hand, precise weight information is the foundation for rational transportation planning and ensuring transportation safety. Different types of transport vehicles have strict load limits; if the weight of the goods exceeds the load-bearing capacity, it may lead to damage to the transport vehicle or even serious traffic accidents, causing personal injury and property damage. On the other hand, in the manufacturing process, accurate weighing of raw materials helps control production costs and ensure product quality. For example, in industries such as chemicals and food, the proportions of raw materials must be strictly in accordance with weight standards; any slight weight deviation may affect the performance and quality of the product.

[0003] However, traditional gantry cranes often lack effective weighing methods when lifting goods. While some gantry cranes are equipped with simple weighing devices, these devices often suffer from low accuracy and poor stability. During the lifting process, goods are affected by various external forces, such as changes in lifting speed and swaying of the lifting device. Traditional weighing devices struggle to accurately eliminate these interfering factors, leading to significant errors in weighing results and failing to meet the demands for precise weight measurement in actual production. Therefore, we propose a weighing lifting device for gantry cranes. Utility Model Content

[0004] The purpose of this utility model is to provide a weighing lifting device for gantry cranes to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a base plate, on the top of which a plurality of mounting sleeves are uniformly fixedly installed. A movable rod is slidably mounted on the top of each mounting sleeve. A limiting rod is fixedly installed at the bottom of the movable rod. A limiting plate is fixedly installed inside the mounting sleeve at the bottom end of the limiting rod. A first spring is sleeved on the outside of the limiting rod inside the mounting sleeve. One end of the first spring is fixedly connected to the mounting sleeve, and the other end is fixedly connected to the limiting plate. A top plate is fixedly installed at the top end of the movable rod. A plurality of telescopic rods are uniformly fixedly installed on the top of the top plate. A fixing plate is fixedly installed at the end of the telescopic arm of each telescopic rod. A mounting plate is rotatably mounted on the top of the fixing plate via a bearing. A hanging ring is fixedly installed on the top of the mounting plate.

[0006] Preferably, a second spring is also sleeved on the outside of the telescopic rod, with one end of the second spring fixedly connected to the top plate and the other end of the second spring fixedly connected to the fixing plate.

[0007] Preferably, a number of support blocks are also uniformly fixedly installed on the side wall of the top plate, and guide wheels are rotatably mounted on the support blocks via bearings. A number of mounting rings are also uniformly fixedly installed on the side wall of the fixing plate.

[0008] Preferably, casters are evenly fixedly installed on the bottom of the base plate.

[0009] Preferably, a plurality of fixing blocks are evenly fixedly installed on the side wall of the base plate, and a pull rope is fixedly installed on the mounting ring. The other end of the pull rope is fixedly connected to the fixing block, and the pull rope is in contact with the guide wheel.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: the universal wheels evenly arranged at the bottom of the base plate greatly facilitate the movement of the lifting device, enabling it to easily reach the designated working position, improving the flexibility and efficiency of the operation. At the same time, the movable rod slides in the mounting sleeve, and in conjunction with the limiting rod, limiting plate and the first spring, when the gantry crane lifts the goods, the first spring is compressed and generates a reaction force, which can effectively reduce the force generated during the lifting process, reduce the interference of external forces on the weighing results, thereby improving the accuracy and stability of weighing, and providing reliable weight data for industrial production and logistics transportation. In addition, the second spring sleeved on the outside of the telescopic rod works together with the telescopic rod to further enhance the unloading effect. When the goods rise suddenly, it can better buffer the force, reduce the risk of damage to the goods due to sudden force, and ensure the safety of the goods.

[0011] In addition, the guide wheel rotating on the top plate side wall support block, the mounting ring on the fixed plate side wall, the fixing block on the bottom plate side wall, and the pull rope connecting the two work together. The pull rope plays an auxiliary support and stabilizing role through the guide wheel. During the lifting of goods, it can further maintain the overall balance and stability of the lifting equipment, reduce swaying, and make the weighing process more stable and accurate. It fully meets the needs of accurate measurement of cargo weight in actual production, helps to improve production efficiency and quality, and reduce transportation risks. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0014] Figure 3 This is a schematic diagram of the internal structure of the mounting sleeve of this utility model.

[0015] The components represented by each number in the attached diagram are listed below: 1. Base plate; 2. Casters; 3. Mounting sleeve; 4. Movable rod; 5. Limiting rod; 6. Limiting plate; 7. First spring; 8. Top plate; 9. Telescopic rod; 10. Second spring; 11. Fixing plate; 12. Mounting disc; 13. Hanging ring; 14. Mounting ring; 15. Pull rope; 16. Guide wheel; 17. Fixing block. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] This utility model provides a technical solution: such as Figures 1-3 The weighing lifting device for a gantry crane shown includes a base plate 1. Universal wheels 2 are evenly fixedly installed on the bottom of the base plate 1. The universal wheels 2 facilitate the movement of the device, thereby facilitating subsequent weighing operations. The universal wheels 2 are also equipped with a locking mechanism, which ensures that the universal wheels 2 remain fixed during loading and unloading, thus guaranteeing the quality of loading and unloading.

[0018] Several mounting sleeves 3 are evenly fixedly installed on the top of the base plate 1. A movable rod 4 is slidably installed on the top of the mounting sleeve 3. A limit rod 5 is fixedly installed at the bottom of the movable rod 4. A limit plate 6 is fixedly installed inside the mounting sleeve 3 at the bottom end of the limit rod 5. A first spring 7 is sleeved on the outside of the limit rod 5 inside the mounting sleeve 3. One end of the first spring 7 is fixedly connected to the mounting sleeve 3, and the other end of the first spring 7 is fixedly connected to the limit plate 6. A top plate 8 is fixedly installed at the top end of the movable rod 4. Several telescopic rods 9 are evenly fixedly installed on the top of the top plate 8. A fixed plate 11 is fixedly installed at the end of the telescopic arm of the telescopic rod 9. A mounting plate 12 is rotatably installed on the top of the fixed plate 11 through a bearing. A hanging ring 13 is fixedly installed on the top of the mounting plate 12. When it is necessary to weigh an object, the worker places the object to be weighed on the base plate 1 and connects the hook of the gantry crane to the hanging ring 13. At this time, the gantry crane moves upward. Under the action of the movable rod 4, the limit rod 5, and the first spring 7, the force generated during the ascent can be reduced, thereby ensuring the quality of subsequent weighing.

[0019] A second spring 10 is also fitted on the outside of the telescopic rod 9. One end of the second spring 10 is fixedly connected to the top plate 8, and the other end of the second spring 10 is fixedly connected to the fixed plate 11. At this time, under the action of the second spring 10 and the telescopic rod 9, the upward force can be better discharged, thereby reducing the occurrence of damage to the object due to sudden rise.

[0020] Several support blocks are evenly fixedly installed on the side wall of the top plate 8. Guide wheels 16 are rotatably mounted on the support blocks via bearings. Several mounting rings 14 are evenly fixedly installed on the side wall of the fixing plate 11. Several fixing blocks 17 are evenly fixedly installed on the side wall of the bottom plate 1. Pull ropes 15 are fixedly installed on the mounting rings 14. The other end of the pull ropes 15 is fixedly connected to the fixing blocks 17. The pull ropes 15 are in contact with the guide wheels 16.

[0021] Working principle: When it is necessary to move the device to the weighing position, the casters 2, which are evenly fixed to the bottom of the base plate 1, can be easily pushed to facilitate subsequent weighing operations. After reaching the designated position, the casters 2 are locked by the locking mechanism to keep them in a fixed state, ensuring that the device will not move during loading and unloading, thereby guaranteeing the quality of loading and unloading.

[0022] During weighing, the operator places the object to be weighed on the base plate 1, and then connects the hook of the gantry crane to the hanging ring 13 on the top of the mounting plate 12. When the gantry crane lifts the object upward, several telescopic rods 9, which are evenly fixed on the top of the top plate 8, begin to retract, causing the fixed plate 11 to rise. During this process, the movable rod 4 slides on the top of the mounting sleeve 3, and the limiting rod 5 at its bottom moves accordingly within the mounting sleeve 3. The limiting plate 6 at the bottom end of the limiting rod 5 presses against the first spring 7 inside the mounting sleeve 3. The first spring 7 is compressed and generates a reaction force, reducing the force generated during the ascent and preventing excessive instantaneous force from affecting the subsequent weighing quality.

[0023] Meanwhile, a second spring 10, fitted on the outer side of the telescopic rod 9, is fixedly connected at one end to the top plate 8 and at the other end to the fixed plate 11. During the object's ascent, the second spring 10 is also compressed, working together with the telescopic rod 9 to better dissipate the upward force and reduce the risk of damage to the object due to sudden ascent.

[0024] Furthermore, guide wheels 16 are rotatably mounted on the support blocks evenly fixed to the side wall of the top plate 8 via bearings. Pull ropes 15 are fixed to the mounting rings 14 evenly fixed to the side wall of the fixing plate 11. The other end of the pull rope 15 is fixedly connected to the fixing blocks 17 evenly fixed to the side wall of the bottom plate 1, and the pull rope 15 is in contact with the guide wheels 16. During the object's ascent, the pull rope 15 provides auxiliary support and stability through the guide wheels 16, further ensuring the smoothness and accuracy of the weighing process.

[0025] 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.

[0026] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A weighing and lifting device for a gantry crane, comprising a base plate (1), characterized in that: The bottom plate (1) is uniformly fixedly installed with several mounting sleeves (3). The top of the mounting sleeve (3) is slidably provided with a movable rod (4). The bottom of the movable rod (4) is fixedly installed with a limit rod (5). The bottom end of the limit rod (5) is fixedly installed with a limit plate (6) inside the mounting sleeve (3). The outside of the limit rod (5) is fitted with a first spring (7) inside the mounting sleeve (3). One end of the first spring (7) is fixedly connected to the mounting sleeve (3), and the other end of the first spring (7) is fixedly connected to the limit plate (6). The top end of the movable rod (4) is fixedly installed with a top plate (8). The top of the top plate (8) is uniformly fixedly installed with several telescopic rods (9). The telescopic arm end of the telescopic rod (9) is fixedly installed with a fixing plate (11). The top of the fixing plate (11) is rotatably provided with a mounting disc (12) through a bearing. The top of the mounting disc (12) is fixedly installed with a hanging ring (13).

2. The weighing and lifting device for a gantry crane according to claim 1, characterized in that: A second spring (10) is also sleeved on the outside of the telescopic rod (9). One end of the second spring (10) is fixedly connected to the top plate (8), and the other end of the second spring (10) is fixedly connected to the fixing plate (11).

3. The weighing and lifting device for a gantry crane according to claim 1, characterized in that: Several support blocks are also evenly fixedly installed on the side wall of the top plate (8), and guide wheels (16) are rotatably installed on the support blocks through bearings. Several mounting rings (14) are also evenly fixedly installed on the side wall of the fixing plate (11).

4. The weighing and lifting device for a gantry crane according to claim 1, characterized in that: The bottom of the base plate (1) is uniformly fixed with casters (2).

5. A weighing and lifting device for a gantry crane according to claim 3, characterized in that: Several fixing blocks (17) are also evenly fixedly installed on the side wall of the base plate (1), and a pull rope (15) is fixedly installed on the mounting ring (14). The other end of the pull rope (15) is fixedly connected to the fixing block (17), and the pull rope (15) is in contact with the guide wheel (16).

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