Unloading belt wheel mechanism of main gear motor

Abstract

An unloading belt wheel mechanism of a main gear motor comprises a motor and a speed reducer fixedly connected to the main shaft end of the motor, an output shaft of the speed reducer is in linkage with the main shaft of the motor through a gear set, the end portion of the connecting end of the output shaft is fixedly sleeved with a connecting shaft, and the end portion of the connecting end of the connecting shaft is located outside the speed reducer. A connecting disc is integrally arranged on the end head of the connecting end of the connecting shaft, and the connecting shaft is located in the middle of the connecting disc and is coaxial with the connecting disc. The connecting shaft is movably sleeved with a supporting sleeve, the supporting sleeve is located between the connecting disc and the speed reducer, the fixed end of the supporting sleeve is fixedly connected with the speed reducer, a belt wheel is rotationally installed on the supporting sleeve, and the connecting disc is fixedly connected with the belt wheel; the connecting shaft is additionally arranged on the output shaft of the speed reducer, the supporting sleeve used for loading is arranged between the connecting shaft and the belt pulley, and the supporting sleeve transmits the pulling force of the belt to the shell of the speed reducer, so that the output shaft of the speed reducer is prevented from bearing uneven radial force, and the service life of the main speed reducing motor is prolonged.

Description

Technical Field

[0001] The utility model relates to a component of a steel ball grinding machine, in particular to a load unloading belt pulley mechanism of a main reduction motor. Background Art

[0002] The steel ball grinding machine can be classified into vertical and horizontal steel ball machines according to the processing method. Because of its advantages such as good rigidity, high precision, stable performance, low failure rate, and high intelligent automation control, it is deeply favored by users at home and abroad. Whether it is a vertical steel ball machine or a horizontal steel ball machine, most of the main reduction motors drive the main shaft to work through a pair of belt pulleys. One end of the main reduction motor is directly connected to the belt pulley, and the other end is connected to the belt pulley connected to the main shaft through a belt. After the equipment works for a long time, due to the belt pulley being stressed in one direction for a long time, the bearings, gears, and sealing rings in the main reduction motor are damaged or leak oil due to excessive temperature or long-term bias force. The above problems need to be solved urgently. Content of the Utility Model

[0003] Aiming at the problems in the prior art, the utility model provides a load unloading belt pulley mechanism of a main reduction motor, aiming to avoid the output shaft of the reduction gear from being subjected to uneven radial forces.

[0004] A load unloading belt pulley mechanism of a main reduction motor includes a motor and a reduction gear fixedly connected to the main shaft end of the motor. The output shaft of the reduction gear is linked with the main shaft of the motor through a gear set. A connecting shaft is fixedly sleeved at the end of the connecting end of the output shaft. The output shaft and the connecting shaft are coaxially arranged. The end of the connecting end of the connecting shaft is located outside the reduction gear. A connecting disc is integrally arranged at the end of the connecting end of the connecting shaft. The connecting shaft is located in the middle of the connecting disc and is coaxially arranged with it. A support sleeve is movably sleeved on the connecting shaft. The support sleeve is located between the connecting disc and the reduction gear. The fixed end of the support sleeve is fixedly connected to the reduction gear. The other end of the support sleeve is in clearance fit with the connecting disc. A belt pulley is rotatably installed on the support sleeve. The connecting disc is fixedly connected to the belt pulley.

[0005] Furthermore, a limit ring is integrally arranged on the end face of the connecting disc. The limit ring is located between the support sleeve and the belt pulley. The limit ring is in clearance fit with the support sleeve and in interference fit with the belt pulley. The end face of the belt pulley is attached to and bolted to the end face of the connecting disc.

[0006] Specifically, a limiting boss is integrally arranged in the middle of the inner ring of the pulley, a limiting stop is integrally arranged at one end of the support sleeve close to the speed reducer, two first bearings are fixedly sleeved between the pulley and the support sleeve, and the two first bearings are respectively located on both sides of the limiting boss. The limiting boss abuts against the outer ring of the first bearing, and the limiting stop abuts against the inner ring of the first bearing close to the speed reducer. A support ring is sleeved at a position between the two first bearings on the support sleeve, and both ends of the support ring respectively abut against the inner rings of the two first bearings. A fixing ring is in threaded fit with the end of the support sleeve far from the speed reducer, and the fixing ring abuts against the inner ring of the corresponding first bearing.

[0007] Specifically, a flange is integrally arranged at the fixed end of the support sleeve, and the flange is attached to and bolted to the housing of the speed reducer.

[0008] Specifically, a receiving groove is arranged at the outer end of the output shaft, the fixed end of the connecting shaft is sleeved in the receiving groove and is in interference fit with it, and a flat key is connected between the connecting shaft and the inner wall of the receiving groove.

[0009] Specifically, a second bearing is fixedly sleeved between the connecting end of the output shaft and the housing of the speed reducer, and the output shaft is rotationally matched with the housing of the speed reducer through the second bearing.

[0010] Specifically, the axis of the output shaft and the axis of the main shaft are arranged perpendicular to each other.

[0011] The beneficial effects of the present utility model are as follows: By adding a connecting shaft to the output shaft of the speed reducer and arranging a support sleeve for load between the connecting shaft and the pulley, the support sleeve transmits the tension of the belt to the housing of the speed reducer, thereby avoiding uneven radial force on the output shaft of the speed reducer, improving the service life of the main reduction motor, greatly reducing the maintenance cost of the main reduction motor, ensuring the processing efficiency and processing accuracy of the equipment, and ensuring the quality and stability of the product. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is Figure 1 an enlarged structural view of area A in Detailed Embodiments

[0014] The following will describe the present utility model in detail with reference to the accompanying drawings. The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described by referring to the drawings below are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model. The orientation terms such as left, middle, right, upper, and lower in the embodiments of the present utility model are only relative concepts to each other or are referenced based on the normal use state of the product, and should not be considered as restrictive.

[0015] An unloading pulley mechanism of a main reduction motor, as Figure 1 shown, includes a motor 1 and a speed reducer 2 fixedly connected to the main shaft end of the motor 1. The main shaft of the motor 1 extends into the speed reducer 2. The output shaft 21 of the speed reducer 2 is linked with the main shaft of the motor 1 through a gear set (the structure and connection form of the gear set are various and are conventional technologies, not shown in the figure). The axis of the output shaft 21 is perpendicular to the axis of the main shaft. A connecting shaft 3 is fixedly sleeved at the end of the connecting end of the output shaft 21. To facilitate the fixed connection between the output shaft 21 and the connecting shaft 3, as Figure 2 shown, a receiving groove 22 is provided at the outer end of the output shaft 21. The fixed end of the connecting shaft 3 is sleeved in the receiving groove 22 and is in interference fit with it. A flat key 31 is connected between the connecting shaft 3 and the inner wall of the receiving groove 22. The output shaft 21 and the connecting shaft 3 are coaxially arranged. The connecting end of the connecting shaft 3 is located outside the speed reducer 2. A connecting disc 32 is integrally provided at the connecting end of the connecting shaft 3. The connecting shaft 3 is located in the middle of the connecting disc 32 and is coaxially arranged with it; A support sleeve 51 is movably sleeved on the connecting shaft 3. The support sleeve 51 is located between the connecting disc 32 and the speed reducer 2. The fixed end of the support sleeve 51 is fixedly connected to the speed reducer 2. Specifically, to facilitate the fixed connection between the support sleeve 51 and the speed reducer 2, a flange 53 is integrally provided at the fixed end of the support sleeve 51. The flange 53 is attached to and bolted to the housing of the speed reducer 2; The other end of the support sleeve 51 is in clearance fit with the connecting disc 32. A pulley 4 is rotatably installed on the support sleeve 51. The connecting disc 32 is fixedly connected to the pulley 4; To improve the fixing effect between the pulley 4 and the connecting disc 32, a limiting ring 33 is integrally provided on the end face of the connecting disc 32. The limiting ring 33 is located between the support sleeve 51 and the pulley 4. The limiting ring 33 is in clearance fit with the support sleeve 51 and in interference fit with the pulley 4. The end face of the pulley 4 is attached to and bolted to the end face of the connecting disc 32.

[0016] Among them, to facilitate the stable rotation of the pulley 4 on the support sleeve 51, a limiting boss 41 is integrally provided in the middle of the inner ring of the pulley 4, and a limiting block 52 is integrally provided at one end of the support sleeve 51 close to the speed reducer 2. Two first bearings 55 are fixedly sleeved between the pulley 4 and the support sleeve 51. The two first bearings 55 are respectively located on both sides of the limiting boss 41. The limiting boss 41 abuts against the outer ring of the first bearing 55, and the limiting block 52 abuts against the inner ring of the first bearing 55 close to the speed reducer 2. A support ring 54 is sleeved at a position between the two first bearings 55 on the support sleeve 51. Both ends of the support ring 54 respectively abut against the inner rings of the two first bearings 55. A fixing ring 56 is in threaded fit with the end of the support sleeve 51 far from the speed reducer 2, and the fixing ring 56 abuts against the inner ring of the corresponding first bearing 55.

[0017] In addition, to ensure the stability of the output shaft 21 in the speed reducer 2, a second bearing 23 is fixedly sleeved between the connecting end of the output shaft 21 and the housing of the speed reducer 2, and the output shaft 21 is rotationally matched with the housing of the speed reducer 2 through the second bearing 23.

[0018] During operation, the pulley 4 can rotate around the support sleeve 51 through the first bearing 55. The fixed end of the connecting shaft 3 is linked with the output shaft 21 through a flat key 31, and the connecting end of the connecting shaft 3 is fixedly connected with the pulley 4 through a connecting disc 32. When the main shaft of the motor 1 rotates, the power is transmitted to the output shaft 21 through the gear set. The output shaft 21 drives the connecting shaft 3 and the connecting disc 32 to rotate, and the connecting disc 32 drives the pulley 4 to rotate. The pulley 4 rotates around the support sleeve 51. Therefore, when the pulley 4 drives the belt to rotate, the force exerted on the pulley 4 by the belt is absorbed or buffered by the support sleeve 51, the flange 53 and the housing of the speed reducer 2, which plays a very good protective role for the connecting shaft 3 and the output shaft 21.

[0019] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An unloading pulley mechanism for a main reduction motor, comprising a motor and a speed reducer fixedly connected to the main shaft end of the motor. The output shaft of the speed reducer is linked to the main shaft of the motor through a gear set, and is characterized in that: A connecting shaft is fixedly sleeved at the end of the connecting end of the output shaft. The output shaft and the connecting shaft are coaxially arranged. The connecting end of the connecting shaft is located outside the speed reducer. A connecting disc is integrally provided at the end of the connecting end of the connecting shaft. The connecting shaft is located in the middle of the connecting disc and is coaxially arranged with it. A support sleeve is movably sleeved on the connecting shaft. The support sleeve is located between the connecting disc and the speed reducer. The fixed end of the support sleeve is fixedly connected to the speed reducer. The other end of the support sleeve is in clearance fit with the connecting disc. A pulley is rotatably mounted on the support sleeve. The connecting disc is fixedly connected to the pulley.

2. The unloading pulley mechanism of the main reduction motor according to claim 1, wherein: A limit ring is integrally provided on the end face of the connecting disc. The limit ring is located between the support sleeve and the pulley. The limit ring is in clearance fit with the support sleeve and interference fit with the pulley. The end face of the pulley is in contact with and bolted to the end face of the connecting disc.

3. The unloading pulley mechanism of the main reduction motor according to claim 1 or 2, characterized in that: A limit boss is integrally provided in the middle of the inner ring of the pulley. A limit stop block is integrally provided at the end of the support sleeve close to the speed reducer. Two first bearings are fixedly sleeved between the pulley and the support sleeve. The two first bearings are respectively located on both sides of the limit boss. The limit boss abuts against the outer ring of the first bearing. The limit stop block abuts against the inner ring of the first bearing close to the speed reducer. A support ring is sleeved at the position between the two first bearings on the support sleeve. Both ends of the support ring respectively abut against the inner rings of the two first bearings. A fixing ring is threadedly fitted at the end of the support sleeve far from the speed reducer. The fixing ring abuts against the inner ring of the corresponding first bearing.

4. The unloading pulley mechanism of the main reduction motor according to claim 1, characterized in that: A flange is integrally provided at the fixed end of the support sleeve. The flange is in contact with and bolted to the housing of the speed reducer.

5. The unloading pulley mechanism of the main reduction motor according to claim 1, characterized in that: A receiving groove is provided at the outer end of the output shaft. The fixed end of the connecting shaft is sleeved in the receiving groove and is in interference fit with it. A flat key is connected between the connecting shaft and the inner wall of the receiving groove.

6. The unloading pulley mechanism of the main reduction motor according to claim 1, characterized in that: A second bearing is fixedly sleeved between the connecting end of the output shaft and the housing of the speed reducer. The output shaft is rotationally fitted with the housing of the speed reducer through the second bearing.

7. The unloading pulley mechanism of the main reduction motor according to claim 1, characterized in that: The axis of the output shaft is perpendicular to the axis of the main shaft.

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