Hoisting mechanism with overspeed protection device

Abstract

The utility model relates to the technical field of hoisting mechanisms, and discloses a hoisting mechanism with an overspeed protection device, which comprises a placing plate, the left side and the right side of the top of the placing plate are fixedly connected with connecting frames, and the inside of the connecting frame on the right side is fixedly connected with a driving assembly for providing sliding force. A protective shell is fixedly connected to the exterior of the driving assembly, cleaning assemblies used for cleaning the placing plate are fixedly connected to the left side and the right side of the exterior of the protective shell, supporting plates are fixedly connected to the left side and the right side of the bottom of the placing plate, a bottom plate is fixedly connected to the bottoms of the supporting plates, and through holes are formed in the exterior of the supporting plates; and the interior of the supporting plate is slidably connected with a sliding plate. According to the utility model, the supporting plate provides stable support for the placing plate and other parts, and the through hole can be convenient for the lifting hook to keep an object lifted by the lifting hook stable through the sliding plate in the ascending or descending process.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting mechanisms, in particular to a lifting mechanism with an overspeed protection device. Background Art

[0002] This device usually consists of an overspeed switch and a control device. It can detect the descent speed of the crane and disconnect the power supply of the crane's hoisting mechanism when the speed exceeds the specified value, causing the hoisting mechanism to stop operating, thereby avoiding accidents caused by the uncontrolled descent speed, which may cause the hoisted object to fall to the ground quickly, be hit, or even threaten the safety of the operator. The hoisting mechanism with an overspeed protection device is a safety protection device used for lifting machinery.

[0003] Some existing devices typically consist of an overspeed switch and a control device. These detect the crane's descent speed and, if the speed exceeds a specified value, disconnect the power supply to the crane's hoist mechanism, causing it to stop. However, during actual use, the hoist mechanism can fail to rise and fall smoothly. In particular, if control is lost during descent, the load can fall rapidly. This can not only damage the load but also pose a serious threat to personnel and equipment on the ground, and even lead to safety accidents. Therefore, to address these issues, a hoist mechanism with an overspeed protection device is proposed. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a lifting mechanism with an overspeed protection device, aiming to improve the problem that some devices in the prior art cannot ensure the smooth lifting of the lifted objects.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The lifting mechanism has a lifting mechanism that is a lifting mechanism and a lifting mechanism and a lifting mechanism is installed in the lifting mechanism of the lifting mechanism, and the lifting mechanism is installed in the lifting mechanism of the lifting mechanism.

[0007] As a further description of the above technical solution:

[0008] The driving assembly includes a cylinder, a driving end of the cylinder is fixedly connected to a driving rod, and the outside of the cylinder is fixedly connected to the inside of the connecting frame;

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

[0010] The cleaning assembly includes a connecting plate, the front and rear sides of the connecting plate are fixedly connected to sliding rods, the bottom of the sliding rod is fixedly connected to a cleaning plate, the bottom of the cleaning plate is fixedly connected to a brush, and the outside of the connecting plate is fixedly connected to the left and right sides of the outside of the protective shell;

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

[0012] The transmission assembly includes a pulley, the outer portion of the pulley is provided with a belt 1, the adjacent sides of the two pulleys are fixedly connected to a connecting wheel, and the outer portion of the pulley is fixedly connected to the driving end of the motor;

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

[0014] The outside of the connecting rod is fixedly connected to a rope, the bottom of the rope is fixedly connected to a pull rope, the bottom of the pull rope is fixedly connected to a fixing frame, the top of the fixing frame is fixedly connected to a plurality of baffles, and the adjacent sides of two baffles are fixedly connected to a plurality of support rods;

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

[0016] The left and right sides of the interior of the fixing frame are fixedly connected to fixed shafts, the outside of the fixed shaft is fixedly connected to a U-shaped plate, the bottom of the fixed shaft is fixedly connected to an extension rod, and the bottom of the extension rod is fixedly connected to a hook;

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

[0018] The interior of the hook is fixedly connected to a support frame, the interior of the support frame is fixedly connected to a connecting shaft, the exterior of the connecting shaft is rotatably connected to a rotating plate, and the bottom of the rotating plate is fixedly connected to a spring;

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

[0020] One end of the spring is fixedly connected to the outside of the rotating plate, and the other end of the spring is fixedly connected to the outside of the hook.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present invention, the support plate provides stable support for the placement plate and other components, and the through hole can facilitate the hook to keep the object lifted by the hook stable through the sliding plate during the process of rising or falling.

[0023] 2. In this utility model, the design of the fixed shaft and U-shaped plate enables the lifting mechanism to withstand the corresponding pressure and load. The rotating plate rotates flexibly with the support of the connecting shaft, and the spring prevents the object from falling off the hook when it is placed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional schematic diagram of a lifting mechanism with an overspeed protection device proposed by the utility model;

[0025] Figure 2 for Figure 1 A magnified view of point A in the figure;

[0026] Figure 3 The utility model is a structural schematic diagram of a fixing frame of a lifting mechanism with an overspeed protection device.

[0027] Figure 4 This is a structural diagram of a fixed shaft of a lifting mechanism with an overspeed protection device proposed in this utility model.

[0028] Legend:

[0029] 1. Placement plate; 2. Connecting frame; 3. Cylinder; 4. Driving rod; 5. Protective shell; 6. Connecting plate; 7. Sliding rod; 8. Cleaning plate; 9. Brush; 10. Support plate; 11. Through hole; 12. Sliding plate; 13. Limiting plate; 14. Motor; 15. Pulley; 16. Belt 1; 17. Connecting wheel; 18. Fixed plate; 19. Connecting shaft; 20. Connecting rod; 21. Rope; 22. Pull rope; 23. Fixed frame; 24. Baffle; 25. Support rod; 26. U-shaped plate; 27. Fixed shaft; 28. Extension rod; 29. ​​Hook; 30. Support frame; 31. Connecting shaft; 32. Rotating plate; 33. Spring; 34. Bottom plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Reference Figures 1 to 3, a lifting mechanism with an overspeed protection device, includes a placement plate 1, which is usually made of high-strength metal material, and its surface is specially treated to have good wear resistance and corrosion resistance. The size and shape of the placement plate 1 can be customized according to actual needs to meet different lifting task requirements. The top and left and right sides of the placement plate 1 are fixedly connected with a connecting frame 2. The connecting frame 2 is generally made of sturdy steel and has excellent load-bearing capacity and stability. The shape of the connecting frame 2 can be cylindrical, plate-shaped or other suitable shapes, and its design purpose is to support and fix other components of the lifting mechanism. The inside of the right connecting frame 2 is fixedly connected to a drive assembly for providing sliding force. The drive assembly includes a cylinder 3. The cylinder 3 can generate a strong thrust through compressed air to provide sliding force for the lifting mechanism. The driving end of the cylinder 3 is fixedly connected to a drive rod 4. The drive rod 4 is generally made of high-strength metal material, and its diameter and length can be adjusted according to the specific needs of the lifting mechanism. The outside of the cylinder 3 is fixedly connected to the inside of the connecting frame 2, and the outside of the drive component is fixedly connected to a protective shell 5. The function of the protective shell 5 is to protect the drive component from the influence of the external environment, and at the same time prevent the operator from accidentally touching the drive component, thereby improving the safety of the lifting mechanism;

[0032] The left and right sides of the exterior of the protective shell 5 are fixedly connected to a cleaning assembly for cleaning the placement plate 1. The cleaning assembly includes a connecting plate 6. The shape of the connecting plate 6 can be rectangular, square or other suitable shapes. Its design purpose is to connect the cleaning plate 8 and the protective shell 5. The front and rear sides of the exterior of the connecting plate 6 are fixedly connected to sliding rods 7. The function of the sliding rods 7 is to provide guidance and support for the cleaning plate 8 to ensure that the cleaning plate 8 can move smoothly during operation. The bottom of the sliding rods 7 is fixedly connected to the cleaning plate 8. The purpose of the cleaning plate 8 is to be in close contact with the surface of the placement plate 1, thereby effectively cleaning the dust and debris on the placement plate 1. The bottom of the cleaning plate 8 is fixedly connected to a brush 9. The shape and size of the brush 9 can be adjusted according to the size of the cleaning plate 8 to ensure that the brush 9 can fully contact the surface of the placement plate 1 to achieve an efficient cleaning function. The exterior of the connecting plate 6 is fixedly connected to the left and right sides of the exterior of the protective shell 5. The left and right sides of the bottom of the placement plate 1 are fixedly connected to support plates 10. Its design purpose is to support the placement plate 1 and other components of the lifting mechanism. The bottom of the support plate 10 is fixedly connected to a base plate 34. The base plate 34 is usually made of thick metal sheet, which has good stability and load-bearing capacity. The size and shape of the base plate 34 can be customized according to the actual needs of the lifting mechanism to ensure that the lifting mechanism can be placed stably on the ground.

[0033] The outside of the support plate 10 is provided with a through hole 11, the function of the through hole 11 is to facilitate the maintenance of the lifting mechanism, and the internal sliding connection of the support plate 10 is provided with a sliding plate 12, the function of the sliding plate 12 is to adjust the height of the lifting mechanism to adapt to different working requirements. The outside of the sliding plate 12 is fixedly connected to a limit plate 13, the function of the limit plate 13 is to prevent the sliding plate 12 from sliding out of the support plate 10 during operation, thereby improving the safety of the lifting mechanism. The left side of the outside of the protective shell 5 is fixedly connected to a motor 14, which is usually made of high-quality steel and has good sealing and durability. The driving end of the motor 14 is fixedly connected to a plurality of transmission components for transmitting rotational force, and the transmission component includes a pulley 15. The purpose of the pulley 15 is to transmit the rotational force of the motor 14 to the connecting wheel 17 through the belt 16. The outside of the pulley 15 is provided with a belt 16, and the function of the belt 16 is to transmit the rotational force of the motor 14 to the pulley 15, thereby realizing power transmission;

[0034] A connecting pulley 17 is fixedly connected to the adjacent side of the two pulleys 15. The outer portion of the pulley 15 is fixedly connected to the drive end of the motor 14. A plurality of fixed plates 18 are fixedly connected to the bottom of the placement plate 1. The inner portion of the fixed plate 18 is fixedly connected to a connecting shaft 19, which is designed to connect the connecting rod 20 and other components of the lifting mechanism to achieve the lifting function of the lifting mechanism. The outer portion of the connecting shaft 19 is fixedly connected to a connecting rod 20. The shape of the connecting rod 20 can be cylindrical, plate-shaped, or other suitable shapes. The purpose of the connecting rod 20 is to transmit the rotational force of the connecting shaft 19 to other components of the lifting mechanism to achieve the lifting function of the lifting mechanism.

[0035] Reference Figures 3 and 4 , the outside of the connecting rod 20 is fixedly connected to a rope 21, which is usually made of high-strength fiber material and has excellent tensile strength and wear resistance. The thickness and length of the rope 21 can be selected according to the specific needs of the lifting mechanism to ensure that it can bear the corresponding weight and achieve safe lifting operations. The bottom of the rope 21 is fixedly connected to a pull rope 22, and the length and material of the pull rope 22 can be adjusted according to actual conditions to meet different lifting heights and working environment requirements. The bottom of the pull rope 22 is fixedly connected to a fixing frame 23, and the shape of the fixing frame 23 can be designed according to actual needs. It is generally a frame structure so that other components can be easily installed and fixed. The external top of the fixing frame 23 is fixedly connected to a plurality of baffles 24, which are generally made of metal plates with a certain thickness and strength. The function of the baffle 24 is to prevent the lifted objects from slipping during the lifting process and to improve the safety of the lifting operation. The number and size of the baffles 24 can be reasonably set according to the size of the fixing frame 23 and the characteristics of the lifted objects;

[0036] Multiple support rods 25 are fixedly connected to adjacent sides of the two baffles 24. These rods further enhance the stability of the baffles 24 and prevent deformation or damage when subjected to heavy loads. The number and distribution of the support rods 25 can be adjusted based on the length and load-bearing requirements of the baffles 24. Fixed shafts 27 are fixedly connected to the left and right sides of the interior of the fixed frame 23. The diameter and length of these shafts can be selected based on the structure of the fixed frame 23 and the lifting requirements to ensure secure mounting and support for components such as the U-shaped plate 26. A U-shaped plate 26 is fixedly connected to the exterior of the fixed shafts 27. The size and thickness of the U-shaped plate 26 can be designed based on the size of the fixed shafts 27 and the weight of the lift to ensure it can withstand the corresponding pressure and load. An extension rod 28 is fixedly connected to the bottom of the fixed shafts 27. The length of the extension rod 28 can be adjusted to meet different lifting height and workspace requirements. A hook 29 is fixedly connected to the bottom of the extension rod 28. This hook 29 is typically made of high-strength steel, offering a sturdy structure and good load-bearing capacity. The hook 29 is generally shaped like a curved hook, which can easily hook the lifted object. A support frame 30 is fixedly connected to the interior of the hook 29. The function of the support frame 30 is to provide support and fix the connection shaft 31 to ensure that the rotating plate 32 can work properly.

[0037] The support frame 30 is internally fixedly connected to a connecting shaft 31, which is typically made of steel and has good wear resistance and load-bearing capacity. The connecting shaft 31 is externally rotatably connected to a rotating plate 32. The shape of the rotating plate 32 can be designed based on the internal space of the hook 29 so that it can flexibly rotate within the hook 29. A spring 33 is fixedly connected to the bottom of the rotating plate 32. The spring 33 is typically made of high-quality spring steel and has good elasticity and durability. One end of the spring 33 is fixedly connected to the outside of the rotating plate 32, and the other end of the spring 33 is fixedly connected to the outside of the hook 29.

[0038] Working principle: When the lifting mechanism is started, the motor 14 drives the pulley 15 to rotate, and then transmits the power to the connecting wheel 17 through the belt 16. The rotation of the connecting wheel 17 drives the connecting shaft 19 in the fixed plate 18 to rotate, and the connecting shaft 19 transmits the rotational force to the connecting rod 20, thereby realizing the lifting function of the lifting mechanism. The outside of the connecting rod 20 is connected to a high-strength rope 21, and the other end of the rope 21 is fixedly connected to the pull rope 22, and the pull rope 22 is connected to the lifted object through the fixed frame 23. During the lifting process, the protective shell 5 protects the internal drive assembly from external influences. At the same time, the cleaning assembly ensures that the cleaning plate 8 is in close contact with the placement plate 1 through the cooperation of the connecting plate 6 and the sliding rod 7, effectively cleaning the surface dust and ensuring the normal operation of the equipment. The support plate 10 provides stable support for the placement plate 1 and other components. The through hole 11 can facilitate the hook 29 to keep the object lifted by the hook 29 stable during the rising or falling process. The sliding plate 12 can adjust the lifting height. When the lifting mechanism reaches the preset height, baffle 24, reinforced by support rods 25, prevents the lifted object from sliding, ensuring safety. The design of fixed shaft 27 and U-shaped plate 26 enables the lifting mechanism to withstand the corresponding pressure and load. The rotating plate 32 rotates flexibly with the support of the connecting shaft 31, while the spring 33 prevents the object from falling off the hook when being placed.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lifting mechanism with an overspeed protection device, comprising a placement plate (1), characterized in that: The top and left sides of the placement plate (1) are fixedly connected to the connecting frame (2), the inside of the right connecting frame (2) is fixedly connected to a driving component for providing a sliding force, the outside of the driving component is fixedly connected to a protective shell (5), the outside of the protective shell (5) is fixedly connected to a cleaning component for cleaning the placement plate (1), the bottom of the placement plate (1) is fixedly connected to the support plate (10) on both sides, the bottom of the support plate (10) is fixedly connected to a bottom plate (34), and the outside of the support plate (10) is provided with a through hole (11), the support plate (10) is internally slidably connected to a sliding plate (12), the sliding plate (12) is externally fixedly connected to a limit plate (13), the protective shell (5) is externally fixedly connected to a motor (14), the driving end of the motor (14) is fixedly connected to a plurality of transmission components for transmitting rotational force, the bottom of the placement plate (1) is fixedly connected to a plurality of fixed plates (18), the interior of the fixed plate (18) is fixedly connected to a connecting shaft (19), and the exterior of the connecting shaft (19) is fixedly connected to a connecting rod (20).

2. The lifting mechanism with an overspeed protection device according to claim 1, characterized in that: The driving assembly comprises a cylinder (3), a driving end of the cylinder (3) is fixedly connected to a driving rod (4), and the outside of the cylinder (3) is fixedly connected to the inside of the connecting frame (2).

3. The lifting mechanism with an overspeed protection device according to claim 2, characterized in that: The cleaning assembly comprises a connecting plate (6), the front and rear sides of the exterior of the connecting plate (6) are fixedly connected to sliding rods (7), the bottom of the sliding rod (7) is fixedly connected to a cleaning plate (8), the bottom of the cleaning plate (8) is fixedly connected to a brush (9), and the exterior of the connecting plate (6) is fixedly connected to the left and right sides of the exterior of the protective shell (5).

4. The lifting mechanism with an overspeed protection device according to claim 3, characterized in that: The transmission assembly includes a pulley (15), the outer surface of the pulley (15) is provided with a belt (16), the adjacent sides of the two pulleys (15) are fixedly connected to a connecting wheel (17), and the outer portion of the pulley (15) is fixedly connected to the driving end of the motor (14).

5. The lifting mechanism with overspeed protection device according to claim 4, characterized in that: The outside of the connecting rod (20) is fixedly connected to a rope (21), the bottom of the rope (21) is fixedly connected to a pull rope (22), the bottom of the pull rope (22) is fixedly connected to a fixing frame (23), the top of the outside of the fixing frame (23) is fixedly connected to a plurality of baffles (24), and the adjacent sides of two baffles (24) are fixedly connected to a plurality of support rods (25).

6. The lifting mechanism with an overspeed protection device according to claim 5, characterized in that: The left and right sides of the interior of the fixing frame (23) are fixedly connected to a fixing shaft (27), the exterior of the fixing shaft (27) is fixedly connected to a U-shaped plate (26), the bottom of the fixing shaft (27) is fixedly connected to an extension rod (28), and the bottom of the extension rod (28) is fixedly connected to a hook (29).

7. The lifting mechanism with an overspeed protection device according to claim 6, characterized in that: The interior of the hook (29) is fixedly connected to a support frame (30), the interior of the support frame (30) is fixedly connected to a connecting shaft (31), the exterior of the connecting shaft (31) is rotatably connected to a rotating plate (32), and the bottom of the rotating plate (32) is fixedly connected to a spring (33).

8. The lifting mechanism with an overspeed protection device according to claim 7, characterized in that: One end of the spring (33) is fixedly connected to the outside of the rotating plate (32), and the other end of the spring (33) is fixedly connected to the outside of the hook (29).

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