A crane scale warning device and a self-unloading hook assembly
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-17
- Publication Date
- 2026-08-14
AI Technical Summary
尤其夜间作业时，高空人员无法清晰辨识地面人员起停手势和吊秤指示灯，只能依靠地面工人通过无线电对话反馈作业实况，而鉴于环境噪音或设备延迟等原因可能出现沟通障碍，从而无法保障吊装作业安全
Smart Images
Figure CN224633079U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crane scale technology, specifically to a crane scale warning device and a self-unloading hook assembly. Background Technology
[0002] Loading and unloading ton bags at docks is a common operation in ports, logistics, and industrial production. Among these operations, hooks are one of the most frequently used lifting tools.
[0003] Safety precautions are paramount during dockside hoisting operations. To ensure safety, there are upper limits on the weight of each ton bag lifted. Currently, the weight is typically monitored by connecting a crane scale to the hook. Most existing crane scales used with the hook are digital displays or have indicator lights. Ground operators must then use wireless communication to inform the crane operators whether the weight is within acceptable limits after the ton bag is lifted and the weight information is displayed. This is especially problematic at night, when crane operators cannot clearly read the hand signals and scale indicator lights from ground personnel. They must rely on ground workers to communicate the operation status via radio, which can be disrupted by environmental noise or equipment delays, compromising hoisting safety.
[0004] Based on this, this utility model designs a crane scale warning device and a self-unloading hook assembly to solve the above problems. Utility Model Content
[0005] The purpose of this utility model is to provide a crane scale warning device and a self-unloading hook assembly to solve the above-mentioned technical problems.
[0006] To achieve the above objectives, the utility model provides the following technical solution:
[0007] A crane scale warning device includes a housing. Inside the housing are a pull-type sensor and a main control chip circuit board. The upper end of the pull-type sensor extends from the top of the housing and is fixed to the housing. The lower end of the pull-type sensor passes through the bottom of the housing. The front of the housing is equipped with a digital display screen and setting buttons on the main control chip circuit board. The bottom of the housing is equipped with a ring-shaped LED light group. The lower end of the pull-type sensor passes through the central hole of the ring-shaped LED light group. The ring-shaped LED light group contains tri-color LED beads and an LED driver board. The LED driver board is electrically connected to the main control chip circuit board.
[0008] A self-unloading hook assembly includes a crane scale warning device, wherein the upper end of the pull-type sensor of the crane scale warning device is hinged to an upper lifting ring and the lower end is hinged to the self-unloading hook body.
[0009] Preferably, the self-unloading hook body includes a hook seat, which is a channel steel structure with an opening on one side. A hook is hinged to the lower end of the hook seat via a pin. A strong magnet is fixedly installed on the upper end of the inner cavity side wall of the hook seat. The upper and lower ends of the hook are a counterweight handle and a hook body, respectively, and a pin hole is opened in the middle.
[0010] Preferably, when the hook swings counterclockwise to its limit position, its counterweight handle is attracted and attached to the strong magnet; when the hook is suspended under load, its counterweight handle is separated from the strong magnet; when the hook is unloaded, its counterweight handle swings clockwise and falls due to its own weight and the center of gravity being on the right.
[0011] Preferably, the lower end of the side edge of the hook seat opening extends to the side and downward to form an anti-slip arm.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] This utility model uses a crane scale warning device to monitor the weight of ton bags. The crane scale warning device has a ring-shaped LED light group set at the bottom of the shell. After the ton bag is lifted, the ring-shaped LED light group can display different colors according to the weight of the ton bag. Moreover, the ring-shaped LED light group is different from traditional display lights. It can shine light downward and display colored light over a large area on the surface of the ton bag, so that the high-altitude workers can directly and timely know the weight status of the ton bag. When a single ton bag is overloaded, safety measures can be taken in time to avoid safety risks.
[0014] This utility model of a self-unloading hook assembly uses a magnet in conjunction with a rotating hook for positioning. The structure is simple and stable. When lifting goods, the magnet has a self-holding function to prevent the hook from tilting and flipping when the hook is not properly attached or when the goods have just started to be lifted, which could cause secondary hooking or accidental disengagement.
[0015] This utility model relates to a self-unloading hook assembly that automatically detaches from the hook when goods are lifted and landed, reducing manual intervention and improving operational efficiency and safety. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the internal structure of the crane scale warning device of this utility model;
[0019] Figure 3This is a schematic diagram of the internal structure of the self-unloading hook body of this utility model;
[0020] Figure 4-6 This is a schematic diagram of the operating steps of the self-unloading hook assembly of this utility model;
[0021] Figure 7 This is a schematic diagram of the self-unloading hook assembly of this utility model in operation. Detailed Implementation
[0022] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.
[0023] Example 1
[0024] Please see Figure 1-3 This embodiment provides a technical solution:
[0025] A self-unloading hook assembly includes a crane scale warning device 10, wherein the upper end of the pull sensor 12 of the crane scale warning device 10 is hinged to an upper lifting ring 20 and the lower end is hinged to the self-unloading hook body 30.
[0026] like Figure 2 As shown, the hanging scale warning device includes a housing 11, which is a box structure with holes on the top and bottom. Inside the housing 11, there is a pull sensor 12 and a main control chip circuit board 13. The main control chip circuit board 13 includes modules such as a signal amplifier, AD converter, and MCU main control chip. The upper end of the pull sensor 12 extends from the top of the housing 11 and is fixed to the housing 11. The gap at the lower end of the pull sensor 12 passes through the bottom of the housing 11. The front of the housing 11 is equipped with a digital display screen 14 and setting buttons on the main control chip circuit board 13.
[0027] The pull sensor 12 is electrically connected to the main control chip circuit board 13, and feeds back the weight information to the main control chip circuit board 13 in the form of an electrical signal. Specifically, the pull sensor 12 collects the weight signal → signal amplifier → AD conversion → MCU main control chip analysis.
[0028] The bottom of the housing 11 is embedded with a ring-shaped LED light group 15. The lower end of the pull sensor 12 passes through the hole in the ring-shaped LED light group 15. The ring-shaped LED light group 15 has built-in tri-color LED beads and an LED driver board. The LED driver board is electrically connected to the main control chip circuit board 13.
[0029] The MCU main control chip analyzes and compares the current weight with a preset threshold, triggering the corresponding alarm logic;
[0030] Specific threshold settings:
[0031] Users can preset alarm levels (e.g., three-level thresholds) for multiple weight ranges:
[0032] Normal range (no alarm / green light always on): weight is within the allowable range;
[0033] Warning (flashing yellow): Approaching the upper limit but not exceeding it (e.g., reaching 90% of the target value);
[0034] Upper limit alarm (red continuously): The weight exceeds the maximum value (such as overweight or out of tolerance).
[0035] After the corresponding alarm logic is triggered, the specific weight value is displayed on the digital display screen 14, and the corresponding color LED beads are driven to light up by the LED driver board via electrical signal, so as to quickly know whether the weight is qualified or not by the light color.
[0036] like Figure 3 As shown, the self-unloading hook body 30 includes a hook seat 31, which is a channel steel structure with an opening on one side. A hook 33 is hinged to the lower end of the hook seat 31 through a pin 32. A strong magnet 34 is fixedly installed on the upper end of the inner cavity side wall of the hook seat 31. The upper and lower ends of the hook 33 are a counterweight handle 331 and a hook body 332, respectively, and a pin hole 333 is opened in the middle. The lower end of the edge of the opening side of the hook seat 31 extends to the side and downward to form an anti-detachment arm 35.
[0037] When the hook 33 swings counterclockwise to its limit position, its counterweight handle 331 is attracted and attached to the strong magnet 34; when the hook 33 is suspended under load, its counterweight handle 331 and the strong magnet 34 are separated; when the hook 33 is unloaded, its counterweight handle 331 swings clockwise and falls due to its own weight and the center of gravity being on the right.
[0038] like Figure 4 The diagram shows the connection between the hook and the ton bag before lifting. At this time, the ton bag is on the ground, and the lifting equipment controls the hook to descend. The ground operator attaches the ton bag's lifting rope to the hook body 332 of the self-unloading hook body 30 and rotates the self-unloading hook body 30 counterclockwise until the counterweight handle 331 is attracted and attached to the strong magnet 34. In this way, since the hook body 332 is not under weight before lifting, the counterweight handle 331 and the strong magnet 34 can maintain attraction and attachment. The opening of the hook body 332 engages with the anti-detachment arm 35, preventing the ton bag's lifting rope from detaching from the hook body 332 before lifting, thus avoiding secondary hooking or accidental detachment.
[0039] like Figure 5 The diagram shows the connection between the hook and the ton bag during lifting. At this time, the ton bag is suspended in the air. When the hook 33 is suspended under load, its counterweight handle 331 and the strong magnet 34 are separated by a gap. However, the opening of the hook body 332 is still engaged with the anti-detachment arm 35 to prevent the lifting rope of the ton bag from separating from the hook body 332 during lifting.
[0040] like Figure 6 The diagram shows the hook touching the ground and connecting to the ton bag. At this time, the ton bag is suspended in the air and touching the ground. The counterweight handle 331 swings clockwise and falls due to its own weight, as the center of gravity is on the right. It should be noted that when the hook touches the ground and unloads the weight, the lateral self-weight force of the counterweight handle 331 is greater than the attraction force of the strong magnet 34, thus ensuring that the hook can automatically disengage.
[0041] like Figure 7 The diagram shows the working status of the self-unloading hook assembly. Throughout the hook operation, the crane scale warning device 10 remains powered on, using different colored lights to represent the hook's load-bearing status. Especially when lifting ton bags, if the crane scale warning device 10 illuminates the ton bag with an overload color, the high-altitude workers can directly and promptly obtain the weight status of the ton bag and take timely safety measures to avoid safety risks.
[0042] In the description of the utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.
[0043] In utility models, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," and "screw-on" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in the utility model according to the specific circumstances.
[0044] Although embodiments of the utility model 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 utility model, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A crane scale warning device, comprising a housing (11), wherein a pull sensor (12) and a main control chip circuit board (13) are disposed inside the housing (11), the upper end of the pull sensor (12) extends from the top of the housing (11) and is fixed to the housing (11), the lower end of the pull sensor (12) passes through the bottom of the housing (11), and a digital display screen (14) and setting buttons on the main control chip circuit board (13) are embedded on the front of the housing (11); characterized in that: The bottom of the housing (11) is embedded with a ring LED light group (15). The lower end of the pull sensor (12) is through the hole in the ring LED light group (15). The ring LED light group (15) has built-in three-color LED beads and an LED driver board. The LED driver board is electrically connected to the main control chip circuit board (13).
2. A self-discharging hanger assembly, characterized by: The system includes the crane scale warning device (10) as described in claim 1, wherein the upper end of the pull sensor (12) of the crane scale warning device (10) is hinged to the upper lifting ring (20) and the lower end is hinged to the self-unloading hook body (30).
3. A self-discharging hanger assembly according to claim 2, wherein: The self-unloading hook body (30) includes a hook seat (31), which is a channel steel structure with an opening on one side. The hook seat (31) is hinged to a hook (33) at the lower end by a pin (32). A strong magnet (34) is fixedly installed on the upper end of the inner cavity side wall of the hook seat (31). The upper and lower ends of the hook (33) are a counterweight handle (331) and a hook body (332), respectively, and a pin hole (333) is opened in the middle.
4. A self-discharging hanger assembly according to claim 3, wherein: When the hook (33) swings counterclockwise to its limit position, its counterweight handle (331) is attracted and attached to the strong magnet (34); when the hook (33) is suspended under load, its counterweight handle (331) and the strong magnet (34) are separated by gap; when the hook (33) is unloaded, its counterweight handle (331) swings clockwise and falls due to its own weight and the center of gravity being on the right.
5. A self-discharging hanger assembly as defined in claim 3, wherein: The hook seat (31) extends downward from the lower edge of the opening side to form an anti-slip arm (35).