Safety detection device for load-bearing frame

Abstract

This utility model relates to the field of safety monitoring technology, and in particular to a safety detection device for a load-bearing frame. It includes at least two sets of material detection modules, with at least one set on each side of the load-bearing frame. Each material detection module includes a mounting base and four photoelectric sensors (a first, second, third, and fourth sensor) connected to a control system. The first and second photoelectric sensors are positioned vertically downwards, with the first sensor located above the material to be retrieved. The second sensor detects the presence of material below the mechanical hook on the load-bearing frame. The third and fourth photoelectric sensors are positioned horizontally towards the side of the material to be retrieved and are spaced apart along the height of the load-bearing frame on the mounting base. The third sensor is located above the fourth sensor. When only the first and third photoelectric sensors detect material, the material is placed in place; otherwise, the control system alarms, significantly improving the safety of the load-bearing frame during descent and material retrieval.

Description

Technical Field

[0001] This utility model relates to the field of safety monitoring technology, and in particular to a safety detection device for load-bearing frames. Background Technology

[0002] Materials are stacked in the frame. The production line transports the frame to the transfer platform of the planar transfer equipment. The planar transfer equipment needs to transfer and stack the frame and its contents to the unloading area. During the lifting and lowering process of the existing planar transfer equipment's load-bearing frame, if there is an error in the placement of the frame to be transferred or if there are obstacles under the load-bearing frame for picking up and unloading materials, it is easy for the robotic arm to get stuck or for the robotic arm to deviate when picking up the frame. This results in unstable transfer and poor safety performance. Summary of the Invention

[0003] In order to address the technical deficiencies mentioned in the background art, the purpose of this utility model is to provide a safety detection device for load-bearing frames.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A safety detection device for a load-bearing frame includes at least two sets of material detection modules, with at least one set on each side of the load-bearing frame. Each material detection module includes a mounting base and a first, second, third, and fourth photoelectric sensor connected to a control system. The mounting base is fixed to the lower side of the load-bearing frame. The first and second photoelectric sensors are vertically downwards and spaced apart along the width of the load-bearing frame on the mounting base. The first photoelectric sensor is located above the material to be hooked, and the second photoelectric sensor is located on the outer side of the load-bearing frame to detect whether material is present below the mechanical hook on the load-bearing frame. The third and fourth photoelectric sensors are horizontally oriented towards the side of the material to be grabbed and spaced apart along the height of the load-bearing frame on the mounting base. The third photoelectric sensor is located above the fourth photoelectric sensor. When only the first or third photoelectric sensor detects material, the material is placed in place. When either the second or fourth photoelectric sensor detects material, the control system alarms.

[0006] By adopting the above technical solution, the first photoelectric sensor is located above the material, which can monitor in real time whether the material to be hooked is placed in the correct position. The second photoelectric sensor is located outside the material to ensure that there are no obstructions in the path of the support frame and the mechanical hook for lowering and picking up the material. When the first photoelectric sensor detects material and the second photoelectric sensor does not detect material, it means that the material is placed in the correct position, and the control system controls the support frame to lower and pick up the material. The third photoelectric sensor determines whether the support frame has lowered in the correct position. When the third photoelectric sensor detects material and the fourth photoelectric sensor does not detect material, it means that the support frame has been lowered in the correct position, and the mechanical hook can be controlled to rotate and hook up the material. When either the second or fourth photoelectric sensor detects material, the control system alarms, and the fault is manually resolved. This material detection module has a simple structure and low cost, which can significantly improve the safety of the support frame lowering and picking up material and the accuracy of material hooking, thereby improving the work efficiency of material transfer and stacking.

[0007] Furthermore, the horizontal distance from the second photoelectric sensor to the side of the load-bearing frame is greater than or equal to the horizontal distance from the mechanical hook to the side of the load-bearing frame, which can ensure that there is no material under the mechanical hook and improve the safety of the mechanical hook.

[0008] Furthermore, the material detection module also includes a fifth photoelectric sensor. This fifth photoelectric sensor is positioned vertically downwards, located between the first and second photoelectric sensors, and its horizontal distance to the side of the support frame is less than the horizontal distance from the mechanical hook to the side of the support frame. When the fifth photoelectric sensor detects material, the mechanical hook stops rotating, and the control system issues an alarm. The fifth photoelectric sensor detects the distance from the mechanical hook to the side of the material to ensure that the cam of the mechanical hook does not scrape against the side of the material after rotation, improving safety and effectively protecting the structure of the mechanical hook, thus extending its service life.

[0009] Furthermore, the mounting base is configured as an L-shaped plate structure. The horizontal portion of the mounting base is screwed to the lower side of the support frame. The first photoelectric sensor is installed on one side of the horizontal portion, and the fifth photoelectric sensor is installed on the other side. The vertical portion of the mounting base protrudes from the support frame and bends downward. The third photoelectric sensor is installed on one side of the vertical portion, the fourth photoelectric sensor is installed on the other side, and the second photoelectric sensor is installed on the side of the vertical portion. The staggered arrangement of multiple photoelectric sensors results in a compact structure, high space utilization, and avoids interference caused by overlapping operations, thus preventing impact on monitoring quality.

[0010] Furthermore, the first, third, fourth, and fifth photocells are each provided with a set of adjustment holes for installation. Each set of adjustment holes has multiple adjustment holes arranged side by side, which can improve compatibility, make installation and adjustment more convenient, and adapt to the detection of materials of various sizes.

[0011] Furthermore, the safety detection device for the load-bearing frame also includes two sets of rotation detection modules for the rotation space of the mechanical hook, with one set of these modules located on each side of the load-bearing frame. Each rotation detection module includes two fixed posts and two photoelectric sensors. A fixed post protrudes downwards from both ends of the same side of the load-bearing frame, and a photoelectric sensor is connected to the end of each fixed post furthest from the load-bearing frame. The two photoelectric sensors on the same side of the load-bearing frame face each other, and the signal connection / disconnection between the two photoelectric sensors determines whether the mechanical hook has rotated to its reset position. When communication between the two photoelectric sensors is interrupted, it indicates that there is an obstacle in the path of the mechanical hook's outward rotation to its reset position, ensuring the safety of the mechanical hook's operation and improving the efficiency of transfer and stacking.

[0012] Furthermore, at least one end of the load-bearing frame is provided with a brake photoelectric sensor, and a sensor plate is provided at the corresponding position of the material. When the brake photoelectric sensor is communicatively connected with the sensor plate, it is used to control the descent position of the load-bearing frame, brake and decelerate in advance, improve the control accuracy of the descent stroke of the load-bearing frame, and make the operation more stable.

[0013] In summary, the beneficial effects of this utility model are as follows:

[0014] The first photoelectric sensor of this invention is located above the material, enabling real-time monitoring to ensure the material is properly positioned. The second photoelectric sensor is located outside the material, ensuring an unobstructed path for the support frame and mechanical hook to descend and retrieve the material. When the first photoelectric sensor detects material but the second does not, the material is in place, and the control system lowers the support frame to retrieve it. The third photoelectric sensor determines whether the support frame has descended to the correct position. When the third photoelectric sensor detects material but the fourth does not, the support frame is in position, and the mechanical hook can be rotated to retrieve the material. If either the second or fourth photoelectric sensor detects material, the control system alarms, requiring manual troubleshooting. This material detection module has a simple structure and low cost, significantly improving the safety of the support frame's descent and the accuracy of material retrieval, thereby increasing the efficiency of material transfer and stacking. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an embodiment of the safety detection device for load-bearing frames according to this utility model.

[0016] Figure 2 yes Figure 1 An enlarged schematic diagram of structure A in the middle.

[0017] Figure 3 This is a structural schematic diagram from another perspective of an embodiment of the safety detection device for load-bearing frames of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of a material detection module of a safety detection device for a load-bearing frame according to the present invention.

[0019] Explanation of the reference numerals in the figure:

[0020] 1. Safety detection device for load-bearing frame; 2. Material detection module; 21. Mounting base; 211. Adjustment hole; 22. First photoelectric sensor; 23. Second photoelectric sensor; 24. Third photoelectric sensor; 25. Fourth photoelectric sensor; 26. Fifth photoelectric sensor; 3. Rotation detection module; 31. Fixed column; 32. Photoelectric sensor; 33. Brake photoelectric sensor; 34. First clamping rod; 35. Second clamping rod; 4. Load-bearing frame; 5. Material; 51. Induction plate; 6. Mechanical hook. Detailed Implementation

[0021] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0022] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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, the above terms should not be construed as limitations on this utility model.

[0023] In the description of this utility model, the use of terms such as "several" means one or more, with "multiple" meaning two or more. Terms like "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of terms like "first," "second," and "third" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the quantity of indicated technical features, or the sequential relationship between indicated technical features.

[0024] The following is in conjunction with the appendix Figure 1-4 The embodiments of this utility model will be described in further detail below.

[0025] Safety detection device 1 for load-bearing frame, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, it includes at least two sets of material detection modules 2, with at least one set of material detection modules 2 installed on each side of the load-bearing frame 4. The material detection module 2 includes a mounting base 21 and a first photoelectric sensor 22, a second photoelectric sensor 23, a third photoelectric sensor 24, and a fourth photoelectric sensor 25, which are communicatively connected to the control system. The mounting base 21 is fixed to the lower side of the load-bearing frame 4. The first photoelectric sensor 22 and the second photoelectric sensor 23 are vertically downwards and spaced apart on the mounting base 21 along the width of the load-bearing frame 4. The first photoelectric sensor 22 is located above the material 5 to be hooked, and the second photoelectric sensor 23 is located on the outer side of the load-bearing frame 4, used to detect whether there is material 5 below the mechanical hook 6 on the load-bearing frame 4. The third photoelectric sensor 24 and the fourth photoelectric sensor 25 are horizontally oriented towards the side of the material 5 to be grabbed and spaced apart on the mounting base 21 along the height of the load-bearing frame 4. The third photoelectric sensor 24 is located above the fourth photoelectric sensor 25. When only the first photocell 22 and the third photocell 24 detect material 5, material 5 is placed in place; when the second photocell 23 or the fourth photocell 25 detects material 5, the control system alarms.

[0026] Specifically, the first photoelectric sensor 22 is located above the material 5 and can monitor in real time whether the material 5 to be hooked is placed in the correct position. The second photoelectric sensor 23 is located outside the material 5 to ensure that there are no obstructions on the path of the support frame 4 and the mechanical hook 6 as they descend to pick up the material. When the first photoelectric sensor 22 detects the material 5 but the second photoelectric sensor 23 does not, it means that the material 5 is placed in the correct position, and the control system controls the support frame 4 to descend and pick up the material. The third photoelectric sensor 24 determines whether the support frame 4 has descended in the correct position. When the third photoelectric sensor 24 detects the material 5 but the fourth photoelectric sensor 25 does not, it means that the support frame 4 has been lowered in the correct position, and the mechanical hook 6 can be controlled to rotate to hook the material 5. However, if the fourth photoelectric sensor 25 detects the material 5 but the third photoelectric sensor 24 does not, it means that the mechanical hook 6 has not hooked the material 5 and is not rising together, or that the hooking of the material 5 is unstable and in an unbalanced state. When either the second photoelectric sensor 23 or the fourth photoelectric sensor 25 detects the material 5, the control system alarms, and manual troubleshooting is required. This material detection module 2 has a simple structure and low cost. It can significantly improve the safety of the load-bearing frame 4 when lowering and picking up materials and the accuracy of material 5 picking up, thereby improving the working efficiency and stability of material 5 transfer and stacking.

[0027] In some embodiments, please refer to Figure 2 , Figure 4The horizontal distance between the second photoelectric sensor 23 and the side of the support frame 4 is greater than or equal to the horizontal distance between the mechanical hook 6 and the side of the support frame 4. This ensures that there is no material 5 under the mechanical hook 6, improving its safety. Specifically, the second photoelectric sensor 23 can be flush with the outer side of the mechanical hook 6 to facilitate monitoring for the presence of material 5 under the mechanical hook 6, preventing the support frame 4 from pressing on the material 5 during descent and protecting the equipment. When the second photoelectric sensor 23 detects material 5, the support frame 4 stops descending, and the control system issues an alarm.

[0028] In some embodiments, please refer to Figure 2 , Figure 4 The material detection module 2 also includes a fifth photoelectric sensor 26. The fifth photoelectric sensor 26 is positioned vertically downwards, between the first photoelectric sensor 22 and the second photoelectric sensor 23. The horizontal distance between the fifth photoelectric sensor 26 and the side of the load-bearing frame 4 is less than the horizontal distance between the mechanical hook 6 and the side of the load-bearing frame 4. When the fifth photoelectric sensor 26 detects material 5, the mechanical hook 6 stops rotating, and the control system alarms. The fifth photoelectric sensor 26 is used to detect the distance between the mechanical hook 6 and the side of material 5, ensuring that the cam of the mechanical hook 6 will not scrape against the side of material 5 after rotation, improving safety and effectively protecting the structure of the mechanical hook 6, thus extending its service life.

[0029] In some embodiments, please refer to Figure 4 The mounting base 21 is an L-shaped plate structure. The horizontal part of the mounting base 21 is screwed to the lower side of the support frame 4. A first photoelectric sensor 22 is installed on one side of the horizontal part, and a fifth photoelectric sensor 26 is installed on the other side. The vertical part of the mounting base 21 protrudes from the support frame 4 and bends downward. A third photoelectric sensor 24 is installed on one side of the vertical part, a fourth photoelectric sensor 25 is installed on the other side, and a second photoelectric sensor 23 is installed on the side of the vertical part. The multiple photoelectric sensors are staggered, resulting in a compact structure, high space utilization, and avoiding interference caused by cross-operations, which could affect the monitoring quality.

[0030] Preferably, the first photocell 22, the third photocell 24, the fourth photocell 25, and the fifth photocell 26 are each provided with a set of adjustment holes 211 for installation. Each set of adjustment holes 211 has multiple adjustment holes 211 arranged side by side, which can improve compatibility, make installation and adjustment more convenient, and adapt to the detection of materials 5 of various sizes.

[0031] In some case examples, please refer to Figure 1 , Figure 2 , Figure 3The safety detection device 1 for the load-bearing frame also includes two sets of rotation detection modules 3 for the rotation space of the mechanical hook 6. One set of rotation detection modules 3 is installed on each side of the load-bearing frame 4. Each rotation detection module 3 includes two fixed posts 31 and two photoelectric sensors 32. A fixed post 31 protrudes downwards from both ends of the same side of the load-bearing frame 4. A photoelectric sensor 32 is connected to the end of each fixed post 31 furthest from the load-bearing frame 4. The two photoelectric sensors 32 on the same side of the load-bearing frame 4 face each other, and the signal connection / disconnection between the two photoelectric sensors 32 determines whether the mechanical hook 6 has rotated and reset. When communication between the two photoelectric sensors 32 is interrupted, it indicates that there is an obstacle in the path of the mechanical hook 6 rotating outwards to reset, ensuring the safety of the mechanical hook 6's operation and improving the efficiency of transfer and stacking. Specifically, the height of the photoelectric sensors 32 corresponds to the position of the hook of the mechanical hook 6, facilitating the detection of obstacles within the rotation range of the mechanical hook 6.

[0032] Specifically, the photoelectric sensor 32 is clamped and fixed to the fixed post 31 by one end of the first clamping rod 34, and the photoelectric sensor 32 is fixed to the other end of the first clamping rod 34. The first clamping rod 34 extends out, so that the position of the photoelectric sensor 32 corresponds to the position of the claw of the mechanical hook 6.

[0033] In some embodiments, please refer to Figure 1 , Figure 2 The load-bearing frame 4 is equipped with a brake photoelectric sensor 33 at at least one end, and a sensor plate 51 is installed at the corresponding position of the material 5. When the brake photoelectric sensor 33 is communicatively connected with the sensor plate 51, it is used to control the descent position of the load-bearing frame 4, brake and decelerate in advance, improve the control accuracy of the descent stroke of the load-bearing frame 4, and make the operation smoother. Specifically, the brake photoelectric sensor 33 is clamped and fixed to the fixed column 31 by a second clamping rod 35, the length of which is less than the length of the first clamping rod 34.

[0034] The principles of this application will be explained in detail below.

[0035] During the descent and material retrieval process, the first photocell 22, the second photocell 23, and the fifth photocell 26 work together to detect whether there is material 5 below the support frame 4. When there is material 5 below the first photocell 22, but not below the second and fifth photocells 23 and 26, it indicates that the material 5 to be grabbed is correctly placed in the feeding position, and the support frame 4 can descend and retrieve the material. If the second photocell 23 or the fifth photocell 26 detects material 5, it indicates that the material 5 is not accurately placed in the feeding position, the control system will issue an alarm, and after the material 5 is placed in the feeding position, the support frame 4 will descend and retrieve the material. During the descent and material retrieval process, when the brake photocell 33 detects the sensing plate 51 at the end of the material 5, the control system controls the support frame 4 to decelerate and stop at the set height.

[0036] When material 5 is being hooked, if the third photoelectric sensor 24 detects material 5 but the fourth photoelectric sensor 25 does not, it indicates that the support frame 4 has descended to the set position. The control system then controls the mechanical hook 6 to rotate and hook material 5. If the third photoelectric sensor 24 does not detect material 5 but the fourth photoelectric sensor 25 does, it indicates that the descent position of the support frame 4 is inaccurate. The control system will then issue an alarm, and manual troubleshooting will be required.

[0037] If the third photocell 24 does not detect material 5 and the fourth photocell 25 does detect material 5 during the lifting process after material 5 is hooked, it means that the mechanical hook 6 has not hooked material 5 or that some hooks have not hooked material 5. The control system will then issue an alarm and the fault will be manually investigated.

[0038] When material 5 is transported above the stacking position, if the second photoelectric sensor 23 detects that there is no material 5 below, the support frame 4 lowers the stacked material 5. When the second photoelectric sensor 23 detects that there is material 5 below, the support frame 4 stops lowering, the control system alarms, and manual troubleshooting is required.

[0039] When material 5 is placed in the stacking position, if the two photoelectric sensors 32 communicate normally, it indicates that there are no obstacles within the rotation range of the mechanical hook 6, allowing it to rotate and reset normally to lower material 5. If the communication between the two photoelectric sensors 32 is lost, it indicates that there are obstacles within the rotation range of the mechanical hook 6, which may cause the mechanical hook 6 to jam or collide during rotation. The control system will then stop the mechanical hook 6 from rotating and issue an alarm, prompting manual troubleshooting.

[0040] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A safety detection device for use on a load-bearing frame, characterized in that, The system includes at least two sets of material detection modules (2), with at least one set of the material detection modules (2) provided on both sides of the load-bearing frame (4); the material detection module (2) includes a mounting base (21), a first photoelectric sensor (22), a second photoelectric sensor (23), a third photoelectric sensor (24), and a fourth photoelectric sensor (25) connected to the control system; the mounting base (21) is fixed to the lower side of the load-bearing frame (4), the first photoelectric sensor (22) and the second photoelectric sensor (23) are vertically downward and spaced apart on the mounting base (21) along the width direction of the load-bearing frame (4), the first photoelectric sensor (22) is located above the material (5) to be hooked, and the second photoelectric sensor... (23) is set on the outside of the load-bearing frame (4) to detect whether there is material (5) under the mechanical hook (6) on the load-bearing frame (4); the third photoelectric sensor (24) and the fourth photoelectric sensor (25) are set horizontally toward the side of the material (5) to be grabbed and are spaced apart on the mounting base (21) along the height direction of the load-bearing frame (4); the third photoelectric sensor (24) is located above the fourth photoelectric sensor (25); when only the first photoelectric sensor (22) and the third photoelectric sensor (24) detect the material (5), the material (5) is placed in place; when the second photoelectric sensor (23) or the fourth photoelectric sensor (25) detects the material (5), the control system alarms.

2. The safety detection device for a load-bearing frame according to claim 1, characterized in that, The horizontal distance from the second photoelectric sensor (23) to the side of the load-bearing frame (4) is greater than or equal to the horizontal distance from the mechanical hook (6) to the side of the load-bearing frame (4).

3. The safety detection device for a load-bearing frame according to claim 2, characterized in that, The material detection module (2) further includes a fifth photoelectric sensor (26), which is set vertically downwards. The fifth photoelectric sensor (26) is located between the first photoelectric sensor (22) and the second photoelectric sensor (23), and the horizontal distance between the fifth photoelectric sensor (26) and the side of the load-bearing frame (4) is less than the horizontal distance between the mechanical hook (6) and the side of the load-bearing frame (4). When the fifth photoelectric sensor (26) detects material (5), the mechanical hook (6) stops rotating and the control system alarms.

4. The safety detection device for a load-bearing frame according to claim 3, characterized in that, The mounting base (21) is configured as an L-shaped plate structure. The horizontal part of the mounting base (21) is screwed to the lower side of the load-bearing frame (4). The first photoelectric sensor (22) is installed on one side of the horizontal part, and the fifth photoelectric sensor (26) is provided on the other side of the horizontal part. The vertical part of the mounting base (21) protrudes from the load-bearing frame (4) and bends downward. The third photoelectric sensor (24) is provided on one side of the vertical part, the fourth photoelectric sensor (25) is provided on the other side of the vertical part, and the second photoelectric sensor (23) is provided on the side of the vertical part.

5. The safety detection device for a load-bearing frame according to claim 4, characterized in that, The first photoelectric sensor (22), the third photoelectric sensor (24), the fourth photoelectric sensor (25), and the fifth photoelectric sensor (26) are each provided with a set of adjustment holes (211) for installation. Each set of adjustment holes (211) is provided with multiple adjustment holes (211) arranged side by side.

6. The safety detection device for a load-bearing frame according to claim 1, characterized in that, The safety detection device for the load-bearing frame also includes two sets of rotation detection modules (3) for the rotation space of the mechanical hook (6). A set of the rotation detection modules (3) is provided on both sides of the load-bearing frame (4). The rotation detection module (3) includes two fixed columns (31) and two photoelectric sensors (32). A fixed column (31) is provided at both ends of the same side of the load-bearing frame (4). A photoelectric sensor (32) is connected to the end of each fixed column (31) away from the load-bearing frame (4). The two photoelectric sensors (32) located on the same side of the load-bearing frame (4) are arranged to face each other. The signal connection and disconnection between the two photoelectric sensors (32) are used to determine whether the mechanical hook (6) has rotated and reset.

7. The safety detection device for a load-bearing frame according to claim 1, characterized in that, The load-bearing frame (4) is provided with a brake photoelectric sensor (33) at at least one end, and a sensor plate (51) is provided at the corresponding position of the material (5). When the brake photoelectric sensor (33) is connected to the sensor plate (51) in communication, it is used to control the descent position of the load-bearing frame (4).

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