Self-lubricating noise-reducing wear-resistant mechanical hoisting pulley

Abstract

The utility model discloses a self-lubricating noise-reducing wear-resisting mechanical hoisting pulley which comprises an installation frame, a driving mechanism is fixedly installed on one side of the installation frame, a supply mechanism is fixedly installed on the top of the installation frame, and a stirring mechanism is installed at the output end of the driving mechanism. By the adoption of the structure, the feeding mechanism and the stirring mechanism are cooperatively matched, the problem of manual lubrication of a traditional hoisting pulley can be solved, an electromagnetic valve is started during lubrication, a pulley body drives a rotating shaft to rotate during operation of the device, a gear transmission system drives an auger on the surface of an inner shaft body to rotate, and negative pressure suction force is generated in a discharging pipe; lubricating oil is conveyed from the tank body to key parts of the pulley body and the rotating shaft, automatic lubrication is achieved, daily maintenance only needs to regularly supplement the lubricating oil to the tank body through the feeding pipe, manual high-altitude operation is not needed, the lubricating process is simplified, convenience and safety are improved, maintenance cost and operation risks are reduced, and efficient operation of the device is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of pulley technology, and specifically relates to a self-lubricating, noise-reducing, and wear-resistant mechanical hoisting pulley. Background Technology

[0002] In modern industrial production and various construction fields, hoisting pulleys play a vital role. They can change the direction of force, effectively reduce the labor intensity when hoisting heavy objects, and greatly improve the efficiency of material transportation and equipment installation. From cargo loading and unloading in large ports to the vertical transportation of building materials in the construction of high-rise buildings, hoisting pulleys are indispensable.

[0003] However, there are some prominent problems with the current application of lifting pulleys. To ensure the normal operation of lifting pulleys, reduce wear, and extend their service life, regular lubrication is an essential maintenance measure. However, most existing lifting pulleys are installed at high positions. For example, on tower cranes at construction sites, the pulleys are usually located tens or even hundreds of meters in the air. On bridge cranes in large factories, the pulleys are also located on high bridge structures. This means that when adding lubricating oil, it is often necessary to manually climb to a high position to perform the operation. This manual lubrication method is not only cumbersome and consumes a lot of manpower and time, but also poses a great safety hazard due to frequent climbing. If the operator makes a mistake during the climbing process, such as slipping or falling, it can easily cause serious personal injury accidents. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a self-lubricating, noise-reducing, and wear-resistant mechanical lifting pulley to solve the problem that the overall lubricating oil is added manually during the application of the prior art, which is inconvenient and cannot achieve automatic lubrication function.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A self-lubricating, noise-reducing, and wear-resistant mechanical lifting pulley includes a mounting frame. A drive mechanism is fixedly mounted on one side of the mounting frame, and a supply mechanism is fixedly mounted on the top of the mounting frame. An agitation mechanism is mounted on the output end of the drive mechanism. The main body of the agitation mechanism is rotatably connected to the bottom of the supply mechanism. A rotating shaft is rotatably connected inside the mounting frame. One end of the rotating shaft is connected to the output end of the drive mechanism, and the pulley body is fixedly mounted on the middle of the rotating shaft.

[0007] The drive mechanism includes a fixed arm, which is fixedly installed on the top side of the mounting frame. A connecting arm is fixedly installed on the top of the fixed arm. A first gear, a second gear, and a third gear are rotatably connected on the inner side of the fixed arm in a linear arrangement from top to bottom with equal spacing. The first gear and the second gear are meshed together, and the second gear and the third gear are meshed together. The end of the rotating shaft is fixedly connected to one side of the third gear. A drive motor is fixedly installed on the outer side of the connecting arm. The output end of the drive motor passes through the connecting arm and is fixedly connected to the outer side of the first gear.

[0008] Furthermore, a cover shell is fixedly installed on the outer side of the fixed arm, and the cover shell covers the outer side of the first gear, the second gear and the second gear.

[0009] Furthermore, the supply mechanism includes a tank, a solenoid valve is fixedly installed at the bottom of the tank, a discharge pipe is fixedly installed at the bottom output end of the solenoid valve, the discharge pipe is fixedly installed at the top of the mounting frame, the bottom of the discharge pipe passes through the mounting frame, and the main body of the stirring mechanism is movably installed inside the discharge pipe.

[0010] Furthermore, a feeding pipe is fixedly installed on the top of the tank, and a sealing cap is threadedly connected to the top of the feeding pipe.

[0011] Furthermore, an observation window is provided on the front of the tank, and a tempered glass plate is fixedly connected inside the observation window.

[0012] Furthermore, the agitation mechanism includes an outer shaft and an inner shaft. The outer shaft is rotatably connected to the upper end of the fixed arm near the discharge pipe. The inner shaft is rotatably connected to the inside of the discharge pipe. Screws are fixedly connected to both the upper and lower ends of the outer surface of the inner shaft. An upper bevel gear is fixedly connected to the end of the outer shaft through the discharge pipe. A lower bevel gear is fixedly connected to the outer surface of the rotating shaft. The upper bevel gear and the lower bevel gear are meshed together.

[0013] Furthermore, a main discharge pipe is fixedly installed at the bottom of the discharge pipe, and auxiliary discharge pipes are fixedly installed on both sides of the main discharge pipe. The output end of the main discharge pipe is located at the top center of the pulley body, and the auxiliary discharge pipes are located at both ends of the rotating shaft.

[0014] In summary, the present invention has the following main advantages:

[0015] First, this device combines power drive and free rotation of the pulley body through a drive mechanism. It uses a stepper motor without brakes as the drive source. After starting, the pulley body rotates actively through gear transmission, providing auxiliary power when lifting goods and improving work efficiency. When no auxiliary power is needed, the power is cut off, and the pulley body can rotate adaptively under the action of external force, realizing the switching between power drive and free operation modes. This design allows the device to flexibly switch between enhancing lifting power and meeting basic transmission requirements, improving ease of use and applicability.

[0016] Secondly, this device employs a combined supply and agitation mechanism, which solves the problem of manual lubrication of traditional hoisting pulleys. During lubrication, the solenoid valve is opened, and the pulley body drives the rotating shaft to rotate during device operation. The gear transmission system drives the auger on the inner shaft surface to rotate, generating negative pressure suction in the discharge pipe. This delivers lubricating oil from the tank to the key parts of the pulley body and rotating shaft, achieving automatic lubrication. Routine maintenance only requires periodically replenishing lubricating oil to the tank through the feeding pipe, eliminating the need for manual high-altitude operations. This simplifies the lubrication process, improves convenience and safety, reduces maintenance costs and operational risks, and ensures efficient operation of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the drive mechanism housing structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the discharge pipe of this utility model;

[0020] Figure 4 This is a schematic diagram of the stirring mechanism of this utility model.

[0021] Reference numerals: 1. Mounting bracket; 2. Drive mechanism; 21. Fixed arm; 22. Connecting arm; 23. First gear; 24. Second gear; 25. Third gear; 26. Drive motor; 27. Cover shell; 3. Supply mechanism; 31. Tank body; 32. Solenoid valve; 33. Discharge pipe; 34. Discharge auxiliary pipe; 35. Feeding pipe; 36. Sealing cover; 37. Observation window; 38. Discharge main pipe; 4. Pulley body; 5. Rotating shaft; 6. Agitator mechanism; 61. Outer shaft; 62. Inner shaft; 63. Screwdriver; 64. Upper bevel gear; 65. Lower bevel gear. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example

[0024] Please refer to Figure 1-4 This embodiment of a self-lubricating, noise-reducing, and wear-resistant mechanical lifting pulley includes a mounting frame 1. A drive mechanism 2 is fixedly mounted on one side of the mounting frame 1, and a supply mechanism 3 is fixedly mounted on the top of the mounting frame 1. An agitation mechanism 6 is mounted on the output end of the drive mechanism 2. The main body of the agitation mechanism 6 is rotatably connected to the bottom of the supply mechanism 3. A rotating shaft 5 is rotatably connected inside the mounting frame 1. One end of the rotating shaft 5 is connected to the output end of the drive mechanism 2, and a pulley body 4 is fixedly mounted on the middle of the rotating shaft 5.

[0025] The drive mechanism 2 includes a fixed arm 21, which is fixedly installed on the top side of the mounting frame 1. A connecting arm 22 is fixedly installed on the top of the fixed arm 21. A first gear 23, a second gear 24, and a third gear 25 are linearly arranged and rotatably connected from top to bottom on the inner side of the fixed arm 21. The first gear 23 and the second gear 24 are meshed together, and the second gear 24 and the third gear 25 are meshed together. The end of the rotating shaft 5 is fixedly connected to one side of the third gear 25. A drive motor 26 is fixedly installed on the outer side of the connecting arm 22. The output end of the drive motor 26 passes through the connecting arm 22 and is fixedly connected to the outer side of the first gear 23. When this self-lubricating, noise-reducing, and wear-resistant mechanical lifting pulley is working, the drive motor 26 is started, and the drive motor 26 outputs power. Its output end drives the first gear 23 to rotate. Because the first gear 23 and the second gear 24 are meshed together, the first gear 23 and the third gear 25 are meshed together. Two gears 24 mesh, and the rotation of the first gear 23 drives the second gear 24 to rotate. The second gear 24 meshes with the third gear 25, which in turn drives the third gear 25 to rotate. The third gear 25 is fixedly connected to the end of the rotating shaft 5. Therefore, the rotation of the third gear 25 assists in driving the rotating shaft 5 to rotate. The pulley body 4, which is fixedly installed in the middle of the rotating shaft 5, starts to operate as the rotating shaft 5 rotates. During the lifting of goods, the rotation of the pulley body 4 can assist in providing power and optimize the lifting process. At the same time, the operation of the drive motor 26, which drives the first gear 23 to rotate, will also transmit power to the stirring mechanism 6 connected to the output end of the drive mechanism 2. In conjunction with the supply mechanism 3, the automatic delivery and application of lubricating oil is realized, providing lubrication for the pulley body 4 and the rotating shaft 5, reducing friction and noise, and improving the wear resistance and service life of the pulley.

[0026] Please refer to Figure 1A protective shell 27 is fixedly installed on the outside of the fixed arm 21. The protective shell 27 covers the outside of the first gear 23, the second gear 24, and the third gear 25. The protective shell 27 installed on the outside of the fixed arm 21 completely covers the first gear 23, the second gear 24, and the third gear 25, forming a closed protective space. During the operation of the pulley, the protective shell 27 can effectively block external dust, debris, moisture, and other impurities from entering the gear transmission system, avoiding problems such as gear wear, jamming, or lubrication failure caused by impurities, and ensuring stable meshing transmission between gears. At the same time, the protective shell 27 can also block the noise generated by gear operation to a certain extent, reducing noise transmission. In addition, the protective shell 27 can prevent lubricating oil from leaking or splashing from the gear transmission parts, maintaining a good lubrication environment, ensuring the long-term stable operation of the gear transmission system, and thus ensuring the normal operation and service life of the entire lifting pulley.

[0027] Please refer to Figures 1-4 The supply mechanism 3 includes a tank 31. A solenoid valve 32 is fixedly installed at the bottom of the tank 31. A discharge pipe 33 is fixedly installed at the bottom output end of the solenoid valve 32. The discharge pipe 33 is fixedly installed on the top of the mounting frame 1, and its bottom penetrates through the mounting frame 1. The main body of the stirring mechanism 6 is movably installed inside the discharge pipe 33. A feeding pipe 35 is fixedly installed on the top of the tank 31. A sealing cap 36 is threadedly connected to the top of the feeding pipe 35. An observation window 37 is opened on the front of the tank 31. A tempered glass plate is fixedly connected inside the observation window 37. During the application of this device, the supply mechanism 3 is mainly responsible for the storage and transportation of lubricating oil. Before construction, the operator unscrews the sealing cap 36 on the top of the feeding pipe 35. The lubricating oil is injected into the tank 31 through the feeding pipe 35 for storage. After injection, the sealing cap 36 is tightened to prevent the lubricating oil from leaking or evaporating. The observation window 37 on the front of the tank 31 is equipped with a tempered glass plate, which allows the operator to observe the amount of lubricating oil in the tank 31 in real time so as to replenish it in time. When it is necessary to lubricate the lifting pulley, the solenoid valve 32 at the bottom of the tank 31 is opened. At this time, the stirring mechanism 6 installed inside the discharge pipe 33 starts to work under the drive of the pulley's rotation power. The auger 63 rotates to generate negative pressure suction, which draws the lubricating oil in the tank 31 through the discharge pipe 33 and delivers it to the bottom. Finally, it is evenly applied to the pulley body 4, the shaft 5 and other parts that need lubrication, to achieve the automatic lubrication function.

[0028] Please refer to Figures 3-4The agitation mechanism 6 includes an outer shaft 61 and an inner shaft 62. The outer shaft 61 is rotatably connected to the upper end of the fixed arm 21 near the discharge pipe 33. The inner shaft 62 is rotatably connected to the inside of the discharge pipe 33. Screws 63 are fixedly connected to both the upper and lower ends of the outer surface of the inner shaft 62. An upper bevel gear 64 is fixedly connected to the end of the outer shaft 61 through the discharge pipe 33. A lower bevel gear 65 is fixedly connected to the outer surface of the rotating shaft 5. The upper bevel gear 64 and the lower bevel gear 65 are meshed together. A main discharge pipe 38 is fixedly installed at the bottom of the discharge pipe 33. A secondary discharge pipe 34 is fixedly installed on both sides of the main discharge pipe 38. The output end of the main discharge pipe 38 is located at the top center of the pulley body 4. The secondary discharge pipes 34 are located at both ends of the rotating shaft 5. During the operation of this device, when the lifting pulley is running, the rotating shaft 5 rotates, and the lower bevel gear 65 fixed to the outer surface of the rotating shaft 5 rotates accordingly. Because the upper bevel gear 64 and the lower bevel gear 65 are meshed, the rotation of the lower bevel gear 65 drives the upper bevel gear 64 to rotate, which in turn drives the outer shaft 61, which is fixedly connected to the upper bevel gear 64, to rotate. When the outer shaft 61 rotates, it drives the inner shaft 62 inside the discharge pipe 33 to rotate. The augers 63 at the upper and lower ends of the inner shaft 62 operate accordingly. The augers 63 rotate in the discharge pipe 33 to generate negative pressure suction. When the solenoid valve 32 of the supply mechanism 3 is opened, the negative pressure draws the lubricating oil in the tank 31 into the discharge pipe 33. The lubricating oil is transported through the discharge pipe 33 to the discharge main pipe 38 and the discharge secondary pipe 34 at the bottom. The discharge main pipe 38 outputs the lubricating oil to the top middle of the pulley body 4, and the discharge secondary pipe 34 transports the lubricating oil to both ends of the rotating shaft 5, so as to achieve precise lubrication of the pulley body 4 and the rotating shaft 5, ensuring that the lifting pulley is effectively lubricated during operation and reducing friction loss.

[0029] Operating Principle and Advantages: This device, through the innovative design of the drive mechanism 2, organically combines the power drive and free rotation function of the pulley body 4. When the device is put into use, the drive motor 26 is started. This drive motor 26 is a stepper motor without a brake function. After it starts running, it drives the first gear 23 to rotate. The first gear 23 drives the second gear 24 to rotate through meshing transmission. The second gear 24 then transmits power to the third gear 25, which in turn assists in driving the rotating shaft 5 to rotate. As the rotating shaft 5 rotates, the pulley body 4, which is installed in the middle of the rotating shaft 5, begins to rotate, giving the pulley body 4 the power to rotate actively. During the lifting of goods, the active rotation of the pulley body 4 can provide auxiliary power, which is advantageous. This device streamlines the cargo lifting and conveying process, improving operational efficiency. When no auxiliary power is required, simply disconnecting the power supply to the drive motor 26 is sufficient. Since the motor has no braking function, the pulley body 4 is no longer constrained by the motor's driving force and can adaptively rotate under the influence of external forces such as cargo weight and wire rope friction. This allows for flexible switching between power-driven and free-running modes. This design enables the device to actively rotate the pulley body 4 by starting the drive motor 26 when increased lifting power is needed; and when no additional power assistance is required, turning off the drive motor 26 allows the pulley body 4 to adaptively follow the cable rotation, meeting basic transmission requirements and significantly improving the device's ease of use and applicability.

[0030] The coordinated operation of the supply mechanism 3 and the stirring mechanism 6 effectively solves the problem of manual lubrication of traditional hoisting pulleys. When the lubrication operation is triggered, the solenoid valve 32 is opened. During the operation of the device, the rotation of the pulley body 4 drives the rotating shaft 5 to rotate synchronously. The rotating shaft 5 drives the first gear 23, the second gear 24 and the third gear 25 in sequence through the gear transmission system. The rotation of the third gear 25 further drives the outer shaft 61 to rotate. The upper bevel gear 64 at the top of the outer shaft 61 rotates accordingly. Through the bevel gear meshing transmission, the power is transmitted to the lower bevel gear 65, which in turn drives the inner shaft 62 to rotate. The auger 63 installed on the surface of the inner shaft 62 starts to work as the inner shaft 62 rotates. The auger 63 is inside the discharge pipe 33. The rotational motion generates negative pressure suction. When the solenoid valve 32 is opened, under the action of negative pressure, lubricating oil is drawn from the tank 31 through the discharge pipe 33 and transported to the discharge main pipe 38 and discharge secondary pipe 34 at the bottom. Finally, it is evenly coated on the key parts of the pulley body 4 and the rotating shaft 5, realizing the automatic lubrication function of the device. In the daily maintenance process, the operator only needs to periodically unscrew the sealing cover 36 and replenish the lubricating oil to the tank 31 through the feeding pipe 35. There is no need to frequently climb to high places for manual lubrication. This design greatly simplifies the lubricating oil replenishment process, significantly improves the convenience and safety of lubricating oil replenishment during the use of the device, effectively reduces the cost of manual maintenance and the risk of high-altitude operation, and ensures the continuous and efficient operation of the device.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-lubricating noise-reducing wear-resistant mechanical hoisting pulley, characterized in that: The utility model provides an automatic feeding device, including the mounting frame (1), one side of mounting frame (1) is fixedly installed with drive mechanism (2), the top of mounting frame (1) is fixedly installed with supply mechanism (3), the output of drive mechanism (2) is installed with agitating mechanism (6), the main part of agitating mechanism (6) is rotatably connected to the bottom of supply mechanism (3), the inside rotationally connected of mounting frame (1) has the pivot (5), one end of pivot (5) is connected with drive mechanism (2) output, the middle part of pivot (5) is fixedly installed with pulley body (4), The drive mechanism (2) includes a fixed arm (21), the fixed arm (21) is fixedly installed on the top side of the mounting frame (1), the top of the fixed arm (21) is fixedly installed with a connecting arm (22), the inside of the fixed arm (21) is rotatably connected with a first gear (23), a second gear (24) and a third gear (25) in linear arrangement from top to bottom at equal intervals, the first gear (23) and the second gear (24) are engagedly connected, the second gear (24) and the third gear (25) are engagedly connected, the end of the pivot (5) is fixedly connected with one side of the third gear (25), the outside of the connecting arm (22) is fixedly installed with a drive motor (26), the output of the drive motor (26) is fixedly connected with the outside of the connecting arm (22) and the first gear (23).

2. A self-lubricating noise-reducing wear-resistant mechanical hoisting pulley according to claim 1, characterized in that: The outside of the fixed arm (21) is fixedly installed with a cladding shell (27), and the cladding shell (27) covers the outside of the first gear (23), the second gear (24) and the second gear (24).

3. A self-lubricating noise-reducing wear-resistant mechanical hoisting pulley according to claim 1, characterized in that: The supply mechanism (3) includes a tank body (31), the bottom of the tank body (31) is fixedly installed with a solenoid valve (32), the bottom output of the solenoid valve (32) is fixedly installed with a discharge pipe (33), the discharge pipe (33) is fixedly installed on the top of the mounting frame (1), the bottom of the discharge pipe (33) penetrates the mounting frame (1), and the main part of the agitating mechanism (6) is movably installed in the discharge pipe (33).

4. A self-lubricating noise-reducing wear-resistant mechanical hoisting pulley according to claim 3, characterized in that: The top of the tank body (31) is fixedly installed with a feeding pipe (35), and the top of the feeding pipe (35) is threadedly connected with a sealing cover (36).

5. A self-lubricating noise-reducing wear-resistant mechanical hoisting pulley according to claim 4, characterized in that: A viewing window (37) is formed in the front of the tank body (31), and a tempered glass plate is fixedly connected in the viewing window (37).

6. A self-lubricating noise reducing wear resistant mechanical hoist pulley as claimed in claim 4, wherein: The agitating mechanism (6) includes an outer shaft body (61) and an inner shaft body (62), the outer shaft body (61) is rotatably connected to the upper end of one side of the fixed arm (21) close to the discharge pipe (33), the inner shaft body (62) is rotatably connected to the inside of the discharge pipe (33), the outer surface of the inner shaft body (62) is fixedly connected with a worm screw (63) at the upper end and the lower end, the end of the outer shaft body (61) is fixedly connected with an upper bevel gear (64) penetrating the discharge pipe (33), the outer surface of the pivot (5) is fixedly connected with a lower bevel gear (65), and the upper bevel gear (64) and the lower bevel gear (65) are engagedly connected.

7. A self-lubricating noise reducing wear resistant mechanical hoist pulley as claimed in claim 6 wherein: The bottom of the discharge pipe (33) is fixedly installed with a discharge main pipe (38), both sides of the discharge main pipe (38) are fixedly installed with discharge auxiliary pipes (34), the output end of the discharge main pipe (38) is arranged in the middle of the top of the pulley body (4), and the discharge auxiliary pipes (34) are arranged at both ends of the rotating shaft (5).

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