Front-end crane weighing device

Abstract

The utility model provides a front -end crane weighing device, the utility model relates to mechanical engineering technical field, including movable board, the surface installation of movable board has the grabbing subassembly, the surface installation of grabbing subassembly has the measuring assembly, the measuring assembly includes the weighing sensor of installation in fixed frame upper portion, the outside of weighing sensor is provided with the support column, the top end welding of support column has the support plate, the bottom outside of fixed plate is installed angle sensor, the upper portion of angle sensor is connected with warning light, in use, utilize the weighing sensor to weigh, and the data real -time transmission back to the external host computer, according to known mechanical structure parameter calculation container weight, and the weight is sent back to the backstage and judges whether the container is overweight, to real -time monitoring overweight box weight, adjust the operation process in time, utilize angle sensor to measure the angle of inclination simultaneously, and make warning light issue warning after exceeding threshold value.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, and in particular to a front-mounted weighing device. Background Technology

[0002] A reach stacker is a heavy-duty lifting and transport equipment widely used in ports, docks, container yards, and other places. It is mainly used for loading, unloading, stacking, and short-distance transport of containers. During transport operations, the weighing system can quickly and accurately measure the weight of containers or cargo, avoiding overloading, underloading, and other problems, and improving operational safety and efficiency.

[0003] A search revealed that the document with publication number "CN222293386U" states, "This utility model discloses a special lifting device for front-end lifting, including a main beam and two crossbeams. The two crossbeams are welded to both ends of the main beam. Each of the two crossbeams has two symmetrically arranged connectors at its upper end for connection with lifting equipment. A first hook is detachably connected to the middle of the main beam. A drive assembly is installed at the bottom of the main beam. Two second hooks are symmetrically and detachably connected to the bottom of the drive assembly. The drive assembly drives the two second hooks to move closer to or further away from each other." This utility model has a reasonable structural design, which facilitates the lifting equipment to lift the device smoothly. The cooperation of the first hook and the two second hooks can prevent the goods from tilting during the lifting process, ensuring the stability and safety of the goods during lifting. It can also control the two second hooks to move closer to or further away from each other, meeting the lifting needs of goods of different sizes.

[0004] However, existing equipment lacks parts that can handle containers with increased height during the lifting process, and when dealing with overweight containers during handling and loading / unloading, the lifting claws are prone to unstable gripping. At the same time, it is impossible to judge the degree of tilt of the container and adjust it in time, which can easily cause the container to shake or fall during subsequent handling or loading / unloading, threatening personal and property safety.

[0005] Therefore, we provide a front-end lifting weighing device to solve the above problems. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides a front-mounted weighing device, which aims to solve the aforementioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A front-mounted weighing device includes a movable plate, characterized in that: a gripping assembly is mounted on the surface of the movable plate, the gripping assembly includes a fixed plate disposed on the upper part of the movable plate, a telescopic inner arm is welded to the inner side of the fixed plate, a telescopic outer arm is sleeved on the surface of the telescopic inner arm, a first hydraulic cylinder is mounted on the upper surface of the telescopic outer arm, a fixed frame is disposed outside the first hydraulic cylinder, a connecting plate is welded to the bottom edge of the movable plate, a second hydraulic cylinder is welded to the bottom of the connecting plate, third hydraulic cylinders are disposed on both sides of the connecting plate, a base plate is welded to the bottom of the second hydraulic cylinder, a limit plate is mounted on the end of the third hydraulic cylinder, and a measuring assembly is mounted on the surface of the fixed frame.

[0009] As a further description of the above technical solution:

[0010] The first hydraulic cylinder is welded to the fixed plate. Two sets of the first hydraulic cylinder are symmetrically arranged about the central axis of the movable plate. The telescopic inner arm and the telescopic outer arm form a telescopic structure through the first hydraulic cylinder.

[0011] As a further description of the above technical solution:

[0012] Two sets of the second hydraulic cylinders are symmetrically arranged about the central axis of the movable plate. The base plate forms a telescopic structure with the connecting plate through the second hydraulic cylinders. The surface of the base plate is provided with a rubber layer.

[0013] As a further description of the above technical solution:

[0014] Two sets of the third hydraulic cylinders are symmetrically arranged about the central axis of the connecting plate. The limiting plate forms a telescopic structure with the connecting plate through the third hydraulic cylinders. The surface of the limiting plate is provided with a rubber layer.

[0015] As a further description of the above technical solution:

[0016] The measuring component includes a load cell mounted on the upper part of a fixed frame. A support column is provided on the outside of the load cell, and a support plate is welded to the top of the support column. The load cell and the support plate are welded together, and the load cell is connected to an external main controller via telecommunications.

[0017] As a further description of the above technical solution:

[0018] Angle sensors are installed on the left and right sides of the fixed plate. Warning lights are connected to the upper part of the angle sensors. Two sets of angle sensors are symmetrically arranged about the central axis of the movable plate. The angle sensors and warning lights are connected by telecommunications.

[0019] As a further description of the above technical solution:

[0020] According to the front-mounted weighing device of the claim, the upper side of the first hydraulic cylinder is welded with a sliding groove, the sliding groove is welded to the telescopic outer arm, an electric lead screw is welded inside the sliding groove, a counterweight is threadedly connected to the surface of the electric lead screw, and two sets of counterweights are symmetrically arranged about the central axis of the movable plate.

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

[0022] 1. This utility model, by setting up a gripping component, uses the extension and retraction of the first hydraulic cylinder to drive the fixed plate to move left and right, thereby driving the telescopic inner arm to move, so that the device can handle containers of different sizes. At the same time, the lengths of the second and third hydraulic cylinders are adjusted, and the moving base plate and the limiting plate are tightly attached to the surface of the container to ensure that the device can stably grip the container and prevent the container from shaking or falling during the movement.

[0023] 2. This utility model uses a measuring component and a weighing sensor to weigh the container and transmit the data back to the external main controller in real time. The controller calculates the container weight based on known mechanical structure parameters and sends the weight back to the backend to determine if the container is overweight. This allows for real-time monitoring of overweight containers and timely adjustment of the work process. Simultaneously, an angle sensor measures the tilt angle, triggering a warning light when the tilt angle exceeds a threshold. The tilt of the device relative to the container can be adjusted by moving the counterweight, preventing the container from falling off during handling or loading / unloading and avoiding unnecessary personal injury and property damage. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the cooperation structure between the telescopic inner arm, the telescopic outer arm, and the first hydraulic cylinder of this utility model.

[0026] Figure 3 This is a schematic diagram of the cooperation structure between the second hydraulic cylinder, the third hydraulic cylinder, the base plate, and the limiting plate of this utility model.

[0027] Figure 4 This is a schematic diagram of the cooperation structure between the weighing sensor and the support column of this utility model;

[0028] Figure 5 This is a schematic diagram of the combined structure of the angle sensor and the warning light of this utility model;

[0029] Figure 6 This is a schematic diagram of the cooperative structure of the slide, electric lead screw and counterweight of this utility model.

[0030] The following components are labeled in the diagram: 1. Movable plate; 2. Gripping assembly; 201. Fixed plate; 202. Telescopic inner arm; 203. Telescopic outer arm; 204. First hydraulic cylinder; 205. Fixed frame; 206. Connecting plate; 207. Second hydraulic cylinder; 208. Third hydraulic cylinder; 209. Base plate; 210. Limiting plate; 3. Measuring assembly; 301. Weighing sensor; 302. Support column; 303. Support plate; 304. Angle sensor; 305. Warning light; 306. Slide groove; 307. Electric lead screw; 308. Counterweight. Detailed Implementation

[0031] 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.

[0032] Please see Figure 1-6 As shown, this utility model provides a technical solution: a front-mounted weighing device, including a movable plate 1, characterized in that: a gripping component 2 is installed on the surface of the movable plate 1, the gripping component 2 includes a fixed plate 201 disposed on the upper part of the movable plate 1, a telescopic inner arm 202 welded to the inner side of the fixed plate 201, a telescopic outer arm 203 sleeved on the surface of the telescopic inner arm 202, a first hydraulic cylinder 204 installed on the upper surface of the telescopic outer arm 203, a fixed frame 205 disposed outside the first hydraulic cylinder 204, a connecting plate 206 welded to the bottom edge of the movable plate 1, a second hydraulic cylinder 207 welded to the bottom of the connecting plate 206, a third hydraulic cylinder 208 disposed on both sides of the connecting plate 206, a base plate 209 welded to the bottom of the second hydraulic cylinder 207, a limit plate 210 installed at the end of the third hydraulic cylinder 208, and a measuring component 3 installed on the surface of the fixed frame 205.

[0033] Furthermore, the first hydraulic cylinder 204 is welded to the fixed plate 201. Two sets of the first hydraulic cylinder 204 are symmetrically arranged about the central axis of the movable plate 1. The telescopic inner arm 202 forms a telescopic structure with the telescopic outer arm 203 through the first hydraulic cylinder 204. After the front crane arm moves the entire device to a suitable position on the container, the length of the first hydraulic cylinder 204 is adjusted to push the fixed plate 201 to move, thereby driving the telescopic inner arm 202 to move until the edge of the moving base plate 209 exceeds the two sides of the container, so that the device can cope with containers of different sizes and improve the versatility of the device.

[0034] Furthermore, two sets of second hydraulic cylinders 207 are symmetrically arranged about the central axis of the movable plate 1. The bottom plate 209 forms a telescopic structure with the connecting plate 206 through the second hydraulic cylinders 207. The surface of the bottom plate 209 is provided with a rubber layer. When it is necessary to lift and raise the container, the bottom plate 209 is moved to fit the bottom of the container by extending the length of the second hydraulic cylinder 207. The length of the first hydraulic cylinder 204 is adjusted to drive the bottom plate 209 to move completely to the bottom of the container. This ensures that the device can handle containers of non-standard sizes. At the same time, the rubber layer on the surface of the bottom plate 209 can fit more closely to the surface of the container, increasing the friction between the bottom plate 209 and the surface of the container and improving the stability of the device.

[0035] Furthermore, two sets of third hydraulic cylinders 208 are symmetrically arranged about the central axis of the connecting plate 206. The limiting plate 210 forms a telescopic structure with the connecting plate 206 through the third hydraulic cylinders 208. The surface of the limiting plate 210 is provided with a rubber layer. After the bottom plate 209 moves to the bottom of the container, the length of the third hydraulic cylinder 208 is adjusted to drive the limiting plate 210 to move to fit the left and right sides of the container. The two sets of limiting plates 210 can clamp the container on both sides to ensure that the container is evenly stressed and does not fall off. At the same time, the rubber layer on the surface of the limiting plate 210 can make the limiting plate 210 fit more closely to the surface of the container, reducing the shaking of the container when the crane moves later.

[0036] Furthermore, the measuring component 3 includes a load cell 301 mounted on the upper part of the fixed frame 205. A support column 302 is provided on the outside of the load cell 301. The load cell 301 is welded to the support plate 303. The load cell 301 is connected to the external main controller via telecommunications. After the container is clamped, the control boom lifts the container. At the same time, the load cell 301 senses the weight and transmits the weight data to the main controller in real time. This facilitates the subsequent calculation of the container weight based on the mechanical structure parameters, achieving the purpose of timely obtaining the container weight. Meanwhile, the support column 302 assists in connecting the load cell 301 to the support plate 303, preventing damage to the load cell 301 when the boom lifts the device through the support plate 303, thus extending the service life of the load cell 301.

[0037] Furthermore, angle sensors 304 are installed on the left and right sides of the fixed plate 201. Warning lights 305 are connected to the upper part of the angle sensors 304. Two sets of angle sensors 304 are symmetrically arranged about the central axis of the movable plate 1. The angle sensors 304 and the warning lights 305 are connected by electricity. While controlling the boom to lift the container, the angle sensors 304 measure the angle according to the tilt of the container at this time. If the tilt angle exceeds the threshold, the warning light 305 flashes red to warn. If it is within a reasonable range, it flashes green, which can warn the crane operator and nearby staff, so as to facilitate timely adjustment of the container angle or emergency avoidance.

[0038] Furthermore, a slide groove 306 is welded to the upper side of the first hydraulic cylinder 204. The slide groove 306 is welded to the telescopic outer arm 203. An electric lead screw 307 is welded inside the slide groove 306. A counterweight 308 is threaded onto the surface of the electric lead screw 307. Two sets of counterweights 308 are symmetrically arranged about the central axis of the movable plate 1. If the angle sensor 304 shows that the container is tilted, the electric lead screw 307 can be started to rotate, driving the counterweight 308 to move left and right, thereby adjusting the center of gravity of the entire device and adjusting the tilt angle of the entire device until the measurement result shows that the angle is within a reasonable range, ensuring that the device and the container are in a relatively reasonable tilt range. During movement, the counterweight 308 can also be adjusted at any time to ensure that no large tilt occurs, avoid the device from becoming unstable and causing the container to fall, resulting in personal injury or death, and improve the stability of the device.

[0039] Working principle: The device is moved to the working position. By adjusting the length of the first hydraulic cylinder 204, the fixed plate 201 is moved, which in turn moves the telescopic inner arm 202 until the bottom plate 209 crosses the edge of the container. Then, the length of the second hydraulic cylinder 207 is adjusted to push the bottom plate 209 to the bottom of the container. Next, the first hydraulic cylinder 204 is extended, moving the bottom plate 209 until it is completely flush with the bottom of the container. Then, the length of the third hydraulic cylinder 208 is adjusted, moving the limit plate 210 to flush with both sides of the container. Finally, the boom is driven to lift the container, and the load cell 301 simultaneously weighs the contents. The system transmits data to an external controller in real time, calculates the container weight using known mechanical parameters, and then wirelessly transmits the data back to the backend for overweight determination. Simultaneously, the angle sensor 304 measures the angle between the container and the device to determine if the tilt exceeds a threshold. If the tilt exceeds the threshold, the warning light 305 emits a red warning light; otherwise, it emits a green light. If the warning light 305 emits a red alarm, it can drive the electric screw 307 to start rotating, moving the counterweight 308 to adjust and alleviate the tilt of the container. Subsequently, the container can be handled and unloaded, thus completing the usage process of a front-end crane weighing device.

[0040] 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 front-mounted weighing device, comprising a movable plate (1), characterized in that: The surface of the movable plate (1) is equipped with a gripping assembly (2). The gripping assembly (2) includes a fixed plate (201) disposed on the upper part of the movable plate (1). A telescopic inner arm (202) is welded to the inner side of the fixed plate (201). A telescopic outer arm (203) is sleeved on the surface of the telescopic inner arm (202). A first hydraulic cylinder (204) is mounted on the upper surface of the telescopic outer arm (203). A fixed frame (205) is disposed on the outside of the first hydraulic cylinder (204). A connecting plate (206) is welded to the bottom edge of the movable plate (1). A second hydraulic cylinder (207) is welded to the bottom of the connecting plate (206). A third hydraulic cylinder (208) is disposed on both sides of the connecting plate (206). A base plate (209) is welded to the bottom of the second hydraulic cylinder (207). A limit plate (210) is installed at the end of the third hydraulic cylinder (208). A measuring assembly (3) is mounted on the surface of the fixed frame (205).

2. The front-mounted weighing device according to claim 1, characterized in that, The first hydraulic cylinder (204) is welded to the fixed plate (201). Two sets of the first hydraulic cylinder (204) are symmetrically arranged about the central axis of the movable plate (1). The telescopic inner arm (202) forms a telescopic structure with the telescopic outer arm (203) through the first hydraulic cylinder (204).

3. The front-mounted weighing device according to claim 1, characterized in that, The second hydraulic cylinder (207) is symmetrically arranged in two sets about the central axis of the movable plate (1). The base plate (209) forms a telescopic structure with the connecting plate (206) through the second hydraulic cylinder (207). The surface of the base plate (209) is provided with a rubber layer.

4. The front-mounted weighing device according to claim 1, characterized in that, Two sets of the third hydraulic cylinder (208) are symmetrically arranged about the central axis of the connecting plate (206). The limiting plate (210) forms a telescopic structure with the connecting plate (206) through the third hydraulic cylinder (208). The surface of the limiting plate (210) is provided with a rubber layer.

5. A front-mounted weighing device according to claim 1, characterized in that, The measuring component (3) includes a weighing sensor (301) mounted on the upper part of the fixed frame (205). A support column (302) is provided on the outside of the weighing sensor (301). A support plate (303) is welded to the top of the support column (302). The weighing sensor (301) and the support plate (303) are welded together. The weighing sensor (301) is connected to an external main controller by telecommunications.

6. A front-mounted weighing device according to claim 1, characterized in that, Angle sensors (304) are installed on the left and right sides of the fixed plate (201). A warning light (305) is connected to the upper part of the angle sensor (304). Two sets of angle sensors (304) are symmetrically arranged about the central axis of the movable plate (1). The angle sensor (304) and the warning light (305) are connected by telecommunications.

7. A front-mounted weighing device according to claim 1, characterized in that, The upper side of the first hydraulic cylinder (204) is welded with a slide groove (306), and the slide groove (306) is welded to the telescopic outer arm (203). An electric lead screw (307) is welded inside the slide groove (306), and a counterweight (308) is threaded onto the surface of the electric lead screw (307). Two sets of counterweights (308) are symmetrically arranged about the central axis of the movable plate (1).

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