Crown block anti-unhooking device and crown block
By designing an anti-detachment device for the overhead crane, the connection status between the pallet and the hook is monitored in real time, which solves the equipment failure problem caused by the pallet detaching from the hook and improves the safety and production efficiency of overhead crane operations.
Patent Information
- Application Number
- CN202423130173.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-17
AI Technical Summary
The existing overhead crane cannot detect the connection status between the pallet and the hook in real time, which causes the pallet to detach from the hook, resulting in equipment failure and production stoppage, affecting production efficiency and safety.
Design an anti-disengagement device for overhead cranes, including a transmission assembly and a detection element. The transmission assembly reciprocates between the detection position and the initial position to detect the connection status between the pallet and the hook in real time. The detection element outputs an ON or OFF signal to remind the operator to stop the machine in time.
It improves the safety and reliability of overhead crane operations, reduces equipment failures and downtime caused by pallet detachment, lowers production risks, and ensures the stability of materials and production efficiency during the handling process.
Smart Images
Figure CN223534697U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of overhead crane equipment technology, and in particular to an anti-derailment device for overhead cranes and an overhead crane. Background Technology
[0002] In the automotive manufacturing industry, the pretreatment electrophoresis process imparts an electrophoretic coating to the car body, giving it excellent rust and corrosion resistance. In assembly line operations, the transfer of workpieces between different processes and tanks relies on various mechanized transport equipment. Automatic hoist conveyors (overhead cranes) are electromechanical integrated conveying devices. Due to their relatively simple structure and convenient maintenance, the number of overhead cranes can be adjusted according to production needs. Furthermore, the overhead cranes use chain hoists for vertical lifting, allowing workpieces to be directly placed into the chemical tank for cleaning. Therefore, they are widely used in the pretreatment and electrophoresis processes for automotive components such as suspension systems.
[0003] In the electrophoresis pretreatment workshop for suspension components, the components are placed on pallets, which are hooked at their four corners by four hooks on an overhead crane. The crane's chain hoist moves the pallets up and down, loading and unloading them, and allowing for immersion in various chemical tanks. Simultaneously, the chain allows the pallets to swing up and down, achieving better cleaning and drainage. Furthermore, the pallets can be moved laterally using the crane's wheels. During this transport, due to various factors, there is a risk that the pallets may detach from the hooks on the crane at their four corners. Since the crane cannot detect or sense this abnormality in real time, it may continue its original movement, ultimately leading to equipment failure and serious consequences. Utility Model Content
[0004] The main purpose of this invention is to propose an anti-derailment device for overhead cranes and an overhead crane, aiming to solve the problem of how to detect the connection status of the pallet and hook in real time.
[0005] To achieve the above objectives, this utility model proposes an anti-derailment device for overhead cranes, used to detect the connection status between a pallet and a hook. The anti-derailment device includes a transmission assembly and a detection element. The detection element is connected to the hook. The transmission assembly is rotatably mounted on the hook. The transmission assembly has a detection position and an initial position. The transmission assembly can reciprocate between the detection position and the initial position. The detection element is used to detect whether the transmission assembly is located at the detection position. The end of the transmission assembly near the hook is used to abut against the pallet. The pallet is hung on the hook. The pallet can drive the transmission assembly to rotate relative to the hook from the initial position to the detection position. The pallet can be separated from the hook. The transmission assembly can rotate from the detection position to the initial position under the action of gravity.
[0006] In one embodiment, the transmission assembly includes a detection plate and a pressure plate, the detection plate and the pressure plate being slidably engaged, the pressure plate being rotatably mounted on the hook, the detection plate having a detection position and an initial position, the detection plate being capable of reciprocating between the detection position and the initial position, the detection element being used to detect whether the detection plate is located at the detection position, the end of the pressure plate away from the detection plate being used to abut against the tray, the tray being hung on the hook, the tray being capable of driving the detection plate to rotate relative to the hook from the initial position to the detection position via the pressure plate; the tray being capable of separating from the hook, the detection plate being capable of rotating from the detection position to the initial position under the action of gravity.
[0007] In one embodiment, the detection plate is provided with a waist-shaped hole, the pressure plate includes a plate body and a limiting member, the plate body is rotatably mounted on the hook, the plate body is provided with a mounting hole, the limiting member includes a bolt and a nut, the bolt passes through the mounting hole and the waist-shaped hole and is threadedly connected to the nut, the bolt can slide along the waist-shaped hole, and the bolt and the nut can restrict the sliding of the detection plate relative to the pressure plate.
[0008] In one embodiment, there are two waist-shaped holes, which are spaced apart. The number of mounting holes, bolts, and nuts is the same as the number of waist-shaped holes and they are arranged in a one-to-one correspondence.
[0009] In one embodiment, the plate body includes a first plate, a second plate, and a fastener. The first plate and the second plate are fixedly connected. The second plate is provided with a mounting hole. The first plate and / or the second plate are rotatably connected to the hook through the fastener. The end of the first plate away from the second plate is used to abut against the tray. The tray is hung on the hook. The tray can drive the detection plate to rotate relative to the hook from the initial position to the detection position through the first plate and the second plate.
[0010] In one embodiment, the crane anti-disengagement device further includes an adjusting bolt, which is threadedly connected to the hook. The detection plate is located in the initial position, and the bottom of the pressure plate abuts against the top of the adjusting bolt to limit the rotation angle of the pressure plate. The tray is hung on the hook, and the tray can drive the pressure plate to rotate relative to the hook so that the bottom of the pressure plate can separate from the top of the adjusting bolt.
[0011] In one embodiment, the crane anti-derailment device further includes an adjusting shim, which is located between the pressure plate and the hook. One side of the adjusting shim abuts against the hook, and the other side of the adjusting shim abuts against the pressure plate.
[0012] And / or,
[0013] The detection board is an insulation detection board;
[0014] And / or,
[0015] An insulating layer is provided on the detection plate.
[0016] In addition, this utility model also proposes an overhead crane, which includes a crane body, a hook, a tray, a control panel, an audible and visual alarm device, and an anti-detachment device as described in any of the above technical solutions. The crane body, the audible and visual alarm device, and the detection element are all electrically connected to the control panel. The hook is connected to the crane body. The tray is used to carry materials. The control panel is used to display the detection information of the detection element.
[0017] In one embodiment, the control panel includes a display body and a one-key shielding device. The vehicle body, the audible and visual alarm device, the detection element, and the one-key shielding device are all electrically connected to the display body. The display body is used to display the detection information of the detection element.
[0018] In one embodiment, the number of hooks is multiple, and the number of anti-derailment devices for the overhead crane is the same as the number of hooks and they are set in a one-to-one correspondence.
[0019] In this embodiment of the invention, the transmission component can rotate relative to the hook and reciprocate between two preset positions, namely the detection position and the initial position. When the transmission component is in the detection position, it can be confirmed that the pallet and the hook are correctly connected. When the transmission component is in the initial position, it indicates that the pallet is not hooked or has been separated from the hook. The detection element is connected to the hook and is used to detect the position of the transmission component, that is, to determine whether it is in the detection position. The specific operation mode of the crane anti-disengagement device is as follows: when the pallet is hooked, the pallet can abut against the side of the transmission component near the hook, that is, the pallet can press against the transmission component, so that the pallet can drive the transmission component to rotate relative to the hook, so that the transmission component can... When the crane rotates from the initial position to the detection position, the transmission component triggers the detection element, which outputs an ON signal, indicating that the hook and pallet are correctly engaged. When the pallet separates from the hook, the transmission component also separates from the pallet. Releasing the pressure of the pallet, the transmission component rotates back to the initial position under its own weight. At this point, the transmission component does not trigger the detection element, which outputs an OFF signal, indicating that the pallet is not engaged or has separated from the hook. This signifies that the pallet has detached, prompting the operator to stop the crane and reconnect the pallet and hook. This prevents potential accidents caused by the failure to detect the hook and pallet connection, thus improving the safety and reliability of the crane operation. The technical solution of this utility model employs a transmission component that can reciprocate between a detection position and an initial position relative to the hook. When the pallet is hooked onto the hook, the transmission component rotates to the detection position; when the pallet is separated from the hook, the transmission component rotates to the initial position. A detection element detects whether the transmission component is in the detection position, thereby real-time monitoring of the connection status between the pallet and the hook. This improves the safety of the work site, ensures that the pallet is correctly hooked onto the hook, prevents materials from accidentally falling off during handling, reduces the risk of accidents, and effectively prevents major equipment failures caused by crane detachment due to various reasons during production, reducing production risks. Furthermore, the crane anti-detachment device has a simple and reliable structure, can work stably under various environmental conditions, ensures the reliability of crane operation, and brings both economic and safety benefits to enterprises. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0021] Figure 1 This is a structural schematic diagram of an embodiment of the overhead crane of this utility model;
[0022] Figure 2This is a schematic diagram of the structure of an embodiment of the overhead crane anti-derailment device of this utility model;
[0023] Figure 3 This is a schematic diagram of another perspective of an embodiment of the anti-derailment device for overhead cranes according to this utility model.
[0024] Explanation of icon numbers:
[0025] 100. Overhead crane anti-disengagement device; 1. Transmission assembly; 11. Pressure plate; 111. Plate body; 1111. First plate; 1112. Second plate; 11121. Mounting hole; 1113. Fastener; 12. Detection plate; 121. Detection position; 122. Initial position; 123. Waist-shaped hole; 2. Detection element; 3. Adjusting bolt;
[0026] 200. Overhead crane; 210. Car body; 220. Hook; 230. Pallet.
[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0028] 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 scope of protection of the present utility model.
[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, and back), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0031] In the automotive manufacturing industry, the pretreatment electrophoresis process imparts an electrophoretic coating to the car body, giving it excellent rust and corrosion resistance. In assembly line operations, the transfer of workpieces between different processes and tanks relies on various mechanized transport equipment. Automatic hoist conveyors (overhead cranes) are electromechanical integrated conveying devices. Due to their relatively simple structure and convenient maintenance, the number of overhead cranes can be adjusted according to production needs. Furthermore, the overhead cranes use chain hoists for vertical lifting, allowing workpieces to be directly placed into the chemical tank for cleaning. Therefore, they are widely used in the pretreatment and electrophoresis processes for automotive components such as suspension systems.
[0032] In the electrophoresis pretreatment workshop for suspension components, the components are placed on pallets, which are hooked at their four corners by four hooks on an overhead crane. The crane's chain hoist moves the pallets up and down, loading and unloading them, and allowing for immersion in various chemical tanks. Simultaneously, the chain allows the pallets to swing up and down, achieving better cleaning and drainage. Furthermore, the pallets can be moved laterally using the crane's wheels. During this transport, due to various factors, there is a risk that the pallets may detach from the hooks on the crane at their four corners. Since the crane cannot detect or sense this abnormality in real time, it may continue its original movement, ultimately leading to equipment failure and serious consequences.
[0033] After careful investigation, the applicant discovered that during the lateral transport of the pallet by the overhead crane's traveling wheels, the buoyancy of the reagent tank can cause various issues, including pallet deformation, crane hook deformation, crane chain jamming, and abnormal crane rail operation. These factors can lead to the risk of the pallet detaching from the crane hooks at all four corners. Since the crane cannot detect these abnormalities, and its power remains on, it continues its original movement, causing the pallet to detach further, potentially completely disengaging. Only when this happens will the equipment malfunction, experience interference, or motor overload, and finally stop completely. Furthermore, when the crane stops, the pallet is suspended in mid-air, or even completely jammed with other equipment, resulting in prolonged crane downtime exceeding 12 hours, causing significant cost waste and severely impacting production efficiency.
[0034] The main purpose of this invention is to propose an anti-disengagement device for overhead cranes and an overhead crane to solve the problem of how to detect the connection status of the pallet and hook in real time.
[0035] Please see Figures 1 to 3 In one embodiment of this utility model, the crane anti-derailment device 100 is used to detect the connection status between the pallet 230 and the hook 220. The crane anti-derailment device 100 includes a transmission assembly 1 and a detection element 2. The detection element 2 is connected to the hook 220. The transmission assembly 1 is rotatably mounted on the hook 220. The transmission assembly 1 has a detection position 121 and an initial position 122. The transmission assembly 1 can reciprocate between the detection position 121 and the initial position 122. The detection element 2 is used to detect whether the transmission assembly 1 is located at the detection position 121. The end of the transmission assembly 1 near the hook 220 is used to abut against the pallet 230. The pallet 230 is hung on the hook 220. The pallet 230 can drive the transmission assembly 1 to rotate relative to the hook 220 from the initial position 122 to the detection position 121. The pallet 230 can be separated from the hook 220. The transmission assembly 1 can rotate from the detection position 121 to the initial position 122 under the action of gravity.
[0036] In this embodiment of the invention, the transmission component 1 can rotate relative to the hook 220 and reciprocate between two preset positions, namely the detection position 121 and the initial position 122. When the transmission component 1 is at the detection position 121, it can be confirmed that the tray 230 and the hook 220 are correctly connected. When the transmission component 1 is at the initial position 122, it indicates that the tray 230 is not hooked or has been separated from the hook 220. The detection element 2 is connected to the hook 220 and is used to detect the position of the transmission component 1, that is, to determine whether it is at the detection position 121. The specific operation mode of the crane anti-disengagement device 100 is as follows: when the tray 230 is hooked to the hook 220, the tray 230 can abut against the side of the transmission component 1 near the hook 220, that is, the tray 230 can press down on the transmission component 1, so that the tray 230 can drive the transmission component 1 to rotate relative to the hook 220, so that the transmission component 1... The system can rotate from the initial position 122 to the detection position 121. At this time, the transmission component 1 can trigger the detection element 2, which outputs an ON signal, indicating that the hook 220 and the tray 230 are correctly engaged. When the tray 230 separates from the hook 220, the transmission component 1 also separates from the tray 230. The transmission component 1 loses the pressure of the tray 230 and rotates back to the initial position 122 under its own gravity. At this time, the transmission component 1 does not trigger the detection element 2, and the detection element 2 outputs an OFF signal, indicating that the tray 230 is not engaged or has separated from the hook 220, thus indicating that the tray 230 has disengaged. This can remind the operator to stop the machine and reconnect the tray 230 and the hook 220 to prevent potential accidents caused by the failure to detect the connection between the hook 220 and the tray 230, thereby improving the safety and reliability of the overhead crane 200 operation.
[0037] The technical solution of this utility model adopts a transmission component 1 that can reciprocate between the detection position 121 and the initial position 122 relative to the hook 220. When the pallet 230 is hooked on the hook 220, the transmission component 1 rotates to the detection position 121. When the pallet 230 is separated from the hook 220, the transmission component 1 rotates to the initial position 122. The detection element 2 detects whether the transmission component 1 is in the detection position 121, thereby detecting the connection status of the pallet 230 and the hook 220 in real time, which improves the safety of the work site, ensures that the pallet 230 is correctly hooked on the hook 220, prevents materials from accidentally falling off during the handling process, reduces the risk of accidents, and can also effectively prevent major equipment failures caused by the crane 200 disengaging from the hook due to various reasons during the production process, reducing production risks. Moreover, the crane anti-disengagement device 100 has a simple and reliable structure and can work stably under various environmental conditions, ensuring the reliability of the crane 200 operation and bringing dual economic and safety benefits to enterprises.
[0038] In this embodiment, the detection element 2 can be a proximity switch, a contact switch, or a sensor. When the transmission assembly 1 rotates to the detection position 121, it can trigger the corresponding detection element 2. This embodiment does not limit the specific selection of the detection element 2.
[0039] In one embodiment, the transmission assembly 1 includes a detection plate 12 and a pressure plate 11. The detection plate 12 and the pressure plate 11 are slidably engaged. The pressure plate 11 is rotatably mounted on the hook 220. The detection plate 12 has a detection position 121 and an initial position 122. The detection plate 12 can reciprocate between the detection position 121 and the initial position 122. The detection element 2 is used to detect whether the detection plate 12 is located at the detection position 121. The end of the pressure plate 11 away from the detection plate 12 is used to abut against the tray 230. The tray 230 is hung on the hook 220. The tray 230 can drive the detection plate 12 to rotate relative to the hook 220 from the initial position 122 to the detection position 121 via the pressure plate 11. The tray 230 can... Separated from hook 220, detection plate 12 can rotate from detection position 121 to initial position 122 under gravity. Specifically, pressure plate 11 can rotate relative to hook 220. When tray 230 is hooked to hook 220, tray 230 can abut against the end of pressure plate 11 away from detection plate 12, that is, tray 230 can press down on pressure plate 11, so that tray 230 can drive detection plate 12 to rotate relative to hook 220 through pressure plate 11, so that detection plate 12 can rotate from initial position 122 to detection position 121. At this time, detection plate 12 can trigger detection element 2, and detection element 2 outputs an ON signal, which can detect that hook 220 and tray 230 are correctly hooked. When the pallet 230 separates from the hook 220, the pressure plate 11 also separates from the pallet 230. The pressure plate 11 loses the pressure from the pallet 230, and the detection plate 12 rotates back to its initial position 122 under its own weight. At this time, the detection plate 12 does not trigger the detection element 2. The detection element 2 outputs an OFF signal, indicating that the pallet 230 is not hooked or has separated from the hook 220, thus indicating that the pallet 230 has disengaged. This reminds the operator to stop the machine and reconnect the pallet 230 and hook 220 to prevent potential accidents caused by the failure to detect the connection between the hook 220 and the pallet 230, thereby improving the safety and reliability of the overhead crane 200 operation. In this embodiment, the detection plate 12 and the pressure plate 11 are slidably engaged, thereby flexibly adjusting the relative position of the detection plate 12 and the detection element 2 according to the on-site usage conditions. This avoids false detection caused by the detection plate 12 shaking and triggering the detection element 2 when the detection plate 12 is close to the detection element 2 due to the swinging of the overhead crane 200, or false detection caused by the detection plate 12 not rotating to the detection position 121 after the detection plate 12 is pressed up and the detection element 2 is not triggered when the detection plate 12 is far away from the detection element 2. This effectively achieves accurate detection of the connection status of the hook 220 and the tray 230, and also improves the flexibility and versatility of the overhead crane anti-disengagement device 100.
[0040] According to one embodiment of the present invention, the pressure plate 11 and the detection plate 12 are fixedly connected, which is simple in structure, easy to disassemble and assemble, and facilitates the improvement of the structural stability of the crane anti-derailment device 100.
[0041] In one embodiment, the detection plate 12 is provided with a slotted hole 123, and the pressure plate 11 includes a plate body 111 and a limiting member (not shown). The plate body 111 is rotatably mounted on the hook 220. The plate body 111 is provided with a mounting hole 11121. The limiting member includes a bolt (not shown) and a nut (not shown). The bolt passes through the mounting hole 11121 and the slotted hole 123 and is threadedly connected to the nut. The bolt can slide along the slotted hole 123. The bolt and nut can restrict the sliding of the detection plate 12 relative to the pressure plate 11. Specifically, in order to achieve a sliding fit between the pressure plate 11 and the detection plate 12, a slotted hole 123 is provided on the detection plate 12. The device has a slotted hole 123, the extension length of which is the adjustment stroke of the detection plate 12. The bolt can slide along the length direction in the slotted hole 123 to flexibly adjust the relative position of the detection plate 12 and the detection element 2, which improves the adaptability and flexibility of the overhead crane anti-disengagement device 100. After the bolt passes through the mounting hole 11121 and the slotted hole 123, it is threadedly connected to the nut to press against the detection plate 12 and the pressure plate 11 to limit the sliding of the detection plate 12 relative to the pressure plate 11. The structure is simple, easy to disassemble and assemble, and can withstand long-term use and repeated sliding actions, which improves the durability and reliability of the overhead crane anti-disengagement device 100.
[0042] According to one embodiment of the present invention, the detection plate 12 is provided with multiple through holes, which are spaced apart. The pressure plate 11 includes a plate body 111 and a limiting member. The plate body 111 is rotatably mounted on the hook 220. The plate body 111 is provided with a mounting hole 11121. The limiting member includes a bolt and a nut. The bolt passes through the mounting hole 11121 and the corresponding through hole and is threadedly connected to the nut. By providing multiple through holes, the relative position of the detection plate 12 and the detection element 2 can be flexibly adjusted to improve the adaptability and flexibility of the crane anti-disengagement device 100.
[0043] In one embodiment, there are two oblong holes 123, which are spaced apart. The number of mounting holes 11121, bolts and nuts is the same as the number of oblong holes 123 and they are arranged in a one-to-one correspondence. Specifically, the design of two oblong holes 123 provides additional stability, which can prevent the detection plate 12 from shaking relative to the pressure plate 11, improve the reliability of the position adjustment of the detection plate 12, and thus help to improve the accuracy and stability of the real-time detection of the crane anti-derailment device 100.
[0044] In one embodiment, the plate body 111 includes a first plate 1111, a second plate 1112, and a fastener 1113. The first plate 1111 and the second plate 1112 are fixedly connected. The second plate 1112 is provided with a mounting hole 11121. The first plate 1111 and / or the second plate 1112 are rotatably connected to the hook 220 through the fastener 1113. The end of the first plate 1111 away from the second plate 1112 is used to abut against the tray 230. The tray 230 is hung on the hook 220. The tray 230 can drive the detection plate 12 to rotate relative to the hook 220 from the initial position 122 to the detection position 121 through the first plate 1111 and the second plate 1112. Specifically, in order to adjust the plate body 111 and the detection plate 12 to a greater extent... In this embodiment, the relative position can be adjusted by rotating the first plate 1111 and the second plate 1112 to adjust the relative angle between the plate body 111 and the detection plate 12, so that the detection plate 12 can accurately trigger the detection element 2 and the tray 230 can accurately press the first plate 1111. After the adjustment is completed, the first plate 1111 and the second plate 1112 are welded and fixed. The first plate 1111 is provided with a first through hole and the second plate 1112 is provided with a second through hole. The hole walls of the first through hole and the hole walls of the second through hole are rotatably connected to the fastener 1113, so that the tray 230 can drive the detection plate 12 to reciprocate between the initial position 122 and the detection position 121 relative to the hook 220 through the first plate 1111 and the second plate 1112.
[0045] According to one embodiment of the present invention, the first plate 1111 and the second plate 1112 are integrally formed, thereby improving the structural strength and stability of the crane anti-derailment device 100.
[0046] According to another embodiment of the present invention, the first plate 1111 and the second plate 1112 are fixedly connected. The first plate 1111 is provided with a first through hole. The wall of the first through hole is rotatably connected to the fastener 1113, so that the tray 230 can drive the detection plate 12 to reciprocate between the initial position 122 and the detection position 121 relative to the hook 220 through the first plate 1111 and the second plate 1112.
[0047] According to another embodiment of the present invention, the first plate 1111 and the second plate 1112 are fixedly connected. The second plate 1112 is provided with a second through hole. The wall of the second through hole is rotatably connected to the fastener 1113, so that the tray 230 can drive the detection plate 12 to reciprocate between the initial position 122 and the detection position 121 relative to the hook 220 through the first plate 1111 and the second plate 1112.
[0048] In this embodiment, the fastener 1113 includes a limiting part, a rotating part, and a connecting part connected in sequence. The plate body 111 is sleeved on the outer wall of the rotating part and is rotatably connected to the rotating part. The limiting part is used to restrict the plate body 111 from disengaging from the rotating part, so that the plate body 111 can rotate relative to the hook 220. The connecting part is provided with an external thread, and the hook 220 is provided with a threaded hole. The external thread and the threaded hole are threadedly engaged. The threaded connection provides a reliable connection method, so that the plate body 111 can be stably fixed on the hook 220 by the fastener 1113, reducing the safety risk caused by the loosening of the fastener 1113, and ensuring the stability and safety of the crane anti-disengagement device 100 during the detection process.
[0049] According to one embodiment of the present invention, the fastener 1113 can be a pin, which passes through the plate body 111 and the hook 220, thereby realizing the relative rotation of the plate body 111 and the hook 220. The structure is simple, easy to disassemble and assemble, and can reduce the direct friction between the fastener 1113 and the hook 220, thus extending the service life of the component.
[0050] In one embodiment, the overhead crane anti-disengagement device 100 further includes an adjusting bolt 3, which is threadedly connected to the hook 220. The detection plate 12 is located in the initial position 122, and the bottom of the pressure plate 11 abuts against the top of the adjusting bolt 3 to limit the rotation angle of the pressure plate 11. The tray 230 is hung on the hook 220, and the tray 230 can drive the pressure plate 11 to rotate relative to the hook 220 so that the bottom of the pressure plate 11 can separate from the top of the adjusting bolt 3. Specifically, considering the weight of the detection plate 12, when the tray 230 is not hung on the hook 220, the detection plate 12 will rotate downward due to gravity, thereby driving the end of the pressure plate 11 away from the detection plate 12 to rotate upward. At this time, the end of the pressure plate 11 away from the detection plate 12 may disengage from the abutment position. This abutment position is the position where the pressure plate 11 also abuts against the tray 230 when the hook 220 is attached to the tray 230. This can cause the pallet 230 to fail to contact the end of the pressure plate 11 away from the detection plate 12 when it is hooked on the hook 220, resulting in detection failure. To avoid this, an adjusting bolt 3 is installed below the pressure plate 11. The adjusting bolt 3 is threadedly connected to the hook 220 to adjust its height, thereby freely adjusting the rotation angle of the pressure plate 11 and the detection plate 12. When the bottom of the pressure plate 11 contacts the top of the adjusting bolt 3, it is the lower limit of the rotation of the pressure plate 11 and the detection plate 12, ensuring that the pressure plate 11 always falls into the contact position even when the hook 220 is not carrying the pallet 230, thereby improving the reliability and safety of the overhead crane anti-disengagement device 100. Furthermore, the adjusting bolt 3 allows the overhead crane anti-disengagement device 100 to be adapted to various types of hooks 220 and pallets 230, giving the overhead crane anti-disengagement device 100 good versatility.
[0051] In one embodiment, the overhead crane anti-disengagement device 100 further includes an adjusting shim (not shown), which is located between the pressure plate 11 and the hook 220. One side of the adjusting shim abuts against the hook 220, and the other side of the adjusting shim abuts against the pressure plate 11; and / or, the detection plate 12 is an insulated detection plate 12; and / or, an insulating layer is provided on the detection plate 12. Specifically, when the distance between the pressure plate 11 and the hook 220 is too close, if the pressure plate 11 or the detection plate 12 is slightly deformed, it is easy to interfere with the hook 220, thereby affecting the detection. When the distance between the pressure plate 11 and the hook 220 is too far, it will cause the gap between the pressure plate 11 and the hook 220 to be too wide, and the tray 230 cannot simultaneously abut against the pressure plate 11 when it is hung on the hook 220, thus failing to detect. Therefore, an adjusting shim is provided between the pressure plate 11 and the hook 220 to allow for adjustment between the pressure plate 11 and the hook 220. The gap size can be freely adjusted to ensure that the anti-detachment device 100 of the overhead crane can be detected normally. Since the anti-detachment device 100 of the overhead crane will undergo electrophoresis treatment together with the overhead crane 200, that is, the hook 220 is immersed in the electrophoresis tank on the tray 230. During the electrophoresis, the power will be turned on, which will cause the hook 220 to become electrified. In order to prevent the detection plate 12 from becoming electrified and arcing with the detection element 2, which will affect the detection, the detection plate 12 needs to be insulated. In this embodiment, insulating plastic or other materials can be used to make the insulating detection plate, or thermoplastic tubes can be used to insulate the detection plate 12 so that an insulating layer is formed on the outer wall of the detection plate 12. Alternatively, while making the insulating detection plate with insulating plastic or other materials, an insulating layer can be formed on the outer wall of the insulating detection plate 12 to achieve double protection to prevent the detection plate 12 from becoming electrified. This embodiment does not limit the insulation method of the detection plate 12.
[0052] Furthermore, this utility model also proposes an overhead crane 200, which includes a crane body 210, a hook 220, a tray 230, a control panel (not shown), an audible and visual alarm device (not shown), and an anti-derailment device 100 as described in any of the above technical solutions. The crane body 210, the audible and visual alarm device, and the detection element 2 are all electrically connected to the control panel. The hook 220 is connected to the crane body 210. The tray 230 is used to carry materials, and the control panel is used to display the detection information of the detection element 2. Specifically, the crane body 210 is the main structural part of the overhead crane 200, used to support the operation of the entire overhead crane 200. The control panel is used to display the detection information of the detection element 2 and is the human-machine interface for operators to monitor and control the overhead crane 200. The audible and visual alarm device can emit audible and visual alarms to remind operators to take action. When the overhead crane 200 executes the loading procedure, that is, when the hook 220 of the overhead crane 200 completes the loading action of the tray 230, the anti-derailment device 100... The detection begins and continues until the pallet 230 is completely unloaded, at which point the crane anti-disengagement device 100 detection ends. During the detection process, when the detection element 2 detects that the detection plate 12 is in the detection position 121, the detection element 2 outputs an ON signal to the control panel. The control panel determines that the crane 200 is in the pallet 230 mounting state, and the crane 200 operates normally. When the detection element 2 detects that the detection plate 12 is not in the detection position 121, the detection element 2 outputs an OFF signal to the control panel. The control panel determines that the crane 200 is in the unmounted state of the pallet 230. At this time, the pallet 230 has been separated from the hook 220. The control panel immediately controls the crane body 210 to cut off the operating power and stop the machine. At the same time, the control panel will drive the audible and visual alarm device to issue an audible and visual alarm prompt for maintenance. The control panel will also display the detection information detected by the detection element 2, including the abnormal crane number 200 and the disengagement position, to facilitate the operator in confirming the abnormality. The vehicle body 210, the audible and visual alarm device, and the detection element 2 are all electrically connected to the control panel to ensure real-time information transmission and processing. The real-time detection of the mounting status of the hook 220 and the pallet 230 ensures the safety and reliability of the material handling process, reduces the risk of accidents caused by the hook 220 and the pallet 230 becoming loose, and reduces the equipment downtime caused by hook detachment from more than 12 hours to less than 10 minutes, significantly improving production efficiency. At the same time, it reduces the risk of damage to the overhead crane 200 due to interference caused by hook detachment to zero, reducing the risk of equipment damage and accidents. The corresponding maintenance costs and repair expenses are also effectively controlled, bringing dual economic and safety benefits to the enterprise.
[0053] In one embodiment, the control panel includes a display body (not shown) and a one-key blocking device (not shown). The vehicle body 210, the audible and visual alarm device, the detection element 2, and the one-key blocking device are all electrically connected to the display body. The display body is used to display the detection information of the detection element 2. Specifically, the one-key blocking device can generate a one-key blocking function to temporarily cut off the signal transmission between the display body and the vehicle body 210. When the crane anti-derailment device 100 malfunctions or needs to be repaired, tested, or installed, the one-key blocking function can be activated to cut off the signal transmission between the display body and the vehicle body 210, facilitating maintenance. After maintenance is completed, the one-key blocking function can be deactivated, and the display body can be restored. The signal transmission between the crane body and the vehicle body 210 enables the normal operation of the crane 200. By setting a one-key shielding device, a large number of problems arising from actual on-site installation can be solved, effectively improving the practicality and versatility of the crane 200, and it can be adapted to different on-site usage scenarios. In this embodiment, each crane 200 should be equipped with a one-key shielding device, and the one-key shielding device should be visualized on the display body for easy operation. At the same time, the shielding state of the crane 200 with the one-key shielding function enabled and the normal state of the crane 200 with the one-key shielding function disabled should be distinguished on the display body, so as to facilitate daily management, improve the control efficiency, safety and adaptability of the crane 200, and enhance the user experience.
[0054] In one embodiment, there are multiple hooks 220, and the number of anti-derailment devices 100 is the same as the number of hooks 220 and they are arranged in a one-to-one correspondence. Specifically, in this embodiment, there are four hooks 220. Therefore, in terms of electrical design, each crane 200 should be equipped with four anti-derailment devices 100. The four hooks 220 and the four anti-derailment devices 100 are arranged in a one-to-one correspondence, thereby detecting the mounting status of the four hooks 220 in real time. When any hook 220 becomes detached, the detection element 2 will output an OFF signal to the control panel, and the control panel will immediately control the crane body 210 to cut off the operation. When the crane stops, the control panel will activate the audible and visual alarm device to prompt maintenance and repair. This ensures that the connection status of each hook 220 and pallet 230 can be independently detected, ensuring the safety of each hook 220 and reducing the risk of the entire handling task failing due to the failure of a single hook 220. This improves the reliability of the entire crane 200 during material handling. In addition, the control panel will generate a "disengagement abnormality" alarm message. The independent crane anti-disengagement device 100 allows for quick location and replacement in case of failure, making monitoring and maintenance work more targeted, simplifying the maintenance process, and reducing overall maintenance costs.
[0055] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A crane anti-disengagement device for detecting the connection status between a pallet and a hook, characterized in that, The overhead crane anti-derailment device includes a transmission assembly and a detection element. The detection element is connected to the hook. The transmission assembly is rotatably mounted on the hook. The transmission assembly has a detection position and an initial position. The transmission assembly can reciprocate between the detection position and the initial position. The detection element is used to detect whether the transmission assembly is located at the detection position. One end of the transmission assembly near the hook is used to abut against the tray. The tray is hung on the hook. The tray can drive the transmission assembly to rotate relative to the hook from the initial position to the detection position. The tray can be separated from the hook. The transmission assembly can rotate from the detection position to the initial position under the action of gravity.
2. The crane anti-derailment device as described in claim 1, characterized in that, The transmission assembly includes a detection plate and a pressure plate. The detection plate and the pressure plate are slidably engaged. The pressure plate is rotatably mounted on the hook. The detection plate has a detection position and an initial position. The detection plate can reciprocate between the detection position and the initial position. The detection element is used to detect whether the detection plate is located at the detection position. The end of the pressure plate away from the detection plate is used to abut against the tray. The tray is hung on the hook. The tray can drive the detection plate to rotate relative to the hook from the initial position to the detection position through the pressure plate. The tray can be separated from the hook. The detection plate can rotate from the detection position to the initial position under the action of gravity.
3. The crane anti-derailment device as described in claim 2, characterized in that, The detection plate is provided with a waist-shaped hole. The pressure plate includes a plate body and a limiting member. The plate body is rotatably mounted on the hook. The plate body is provided with a mounting hole. The limiting member includes a bolt and a nut. The bolt passes through the mounting hole and the waist-shaped hole and is threadedly connected to the nut. The bolt can slide along the waist-shaped hole. The bolt and the nut can restrict the sliding of the detection plate relative to the pressure plate.
4. The crane anti-derailment device as described in claim 3, characterized in that, The number of the waist-shaped holes is two, and the two waist-shaped holes are spaced apart. The number of the mounting holes, the bolts and the nuts are the same as the number of the waist-shaped holes and are arranged in a one-to-one correspondence.
5. The crane anti-derailment device as described in claim 3, characterized in that, The plate body includes a first plate, a second plate, and fasteners. The first plate and the second plate are fixedly connected. The second plate is provided with mounting holes. The first plate and / or the second plate are rotatably connected to the hook through the fasteners. The end of the first plate away from the second plate is used to abut against the tray. The tray is hung on the hook. The tray can drive the detection plate to rotate relative to the hook from the initial position to the detection position through the first plate and the second plate.
6. The crane anti-derailment device as described in any one of claims 2 to 4, characterized in that, The overhead crane anti-disengagement device also includes an adjusting bolt, which is threadedly connected to the hook. The detection plate is located in the initial position, and the bottom of the pressure plate abuts against the top of the adjusting bolt to limit the rotation angle of the pressure plate. The tray is hung on the hook, and the tray can drive the pressure plate to rotate relative to the hook so that the bottom of the pressure plate can separate from the top of the adjusting bolt.
7. The crane anti-derailment device as described in any one of claims 2 to 4, characterized in that, The crane anti-disengagement device also includes an adjusting shim, which is located between the pressure plate and the hook. One side of the adjusting shim abuts against the hook, and the other side of the adjusting shim abuts against the pressure plate. And / or, The detection board is an insulation detection board; And / or, An insulating layer is provided on the detection plate.
8. A crane, characterized in that, The overhead crane includes a crane body, a hook, a tray, a control panel, an audible and visual alarm device, and an anti-derailment device as described in any one of claims 1 to 7. The crane body, the audible and visual alarm device, and the detection element are all electrically connected to the control panel. The hook is connected to the crane body. The tray is used to carry materials. The control panel is used to display the detection information of the detection element.
9. The overhead crane as described in claim 8, characterized in that, The control panel includes a display body and a one-key shielding device. The vehicle body, the audible and visual alarm device, the detection element, and the one-key shielding device are all electrically connected to the display body. The display body is used to display the detection information of the detection element.
10. The overhead crane as described in claim 8, characterized in that, The number of hooks is multiple, and the number of anti-derailment devices for the overhead crane is the same as the number of hooks and they are set in a one-to-one correspondence.