Heavy-duty bearing transmission system

Abstract

The utility model belongs to the technical field of production lines of steel mills, and relates to a heavy-duty bearing transmission system which comprises a transmission shaft arranged in a machine body, an axial adjusting mechanism used for driving the transmission shaft to axially adjust is arranged outside the transmission shaft, the axial adjusting mechanism comprises a sleeve cup and a bearing assembly, and the bearing assembly is arranged between the transmission shaft and the sleeve cup. An oil supply groove is formed in one side of the outer surface of the retainer cup in the circumferential direction, a plurality of oil supply holes are formed in the oil supply groove, and the oil supply holes communicate with the bearing assembly in the retainer cup. The oil supply groove and the oil supply hole are formed in the retainer cup, oil is supplied to the bearing assembly through manual oil injection or an oil supply pipeline in the machine body, the lubricating effect of the bearing is guaranteed, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of production lines in steel rolling mills and relates to a heavy-duty bearing transmission system. Background Art

[0002] There are many solutions for adjusting the axial displacement of heavy-duty transmission shafts in steel rolling mills. This function can be achieved by relying on electrical control, high-precision sensor control, etc. However, this solution is expensive and the level of subsequent maintenance also needs to be improved. Therefore, it is necessary to provide an axial displacement adjustment solution based on mechanical structure to ensure the accuracy and reliability of axial adjustment.

[0003] In the prior art, a heavy-duty bearing transmission system is provided, which adopts an axial displacement adjustment scheme based on a mechanical structure. Since it is used to adjust the axial displacement of a heavy-duty transmission shaft, the bearing size is large, and the conventional lubrication structure cannot guarantee the lubrication effect of the bearing assembly, resulting in insufficient lubrication. In order to solve the above problems, a heavy-duty bearing transmission system is required to meet production needs. Utility Model Content

[0004] In view of this, an object of the present invention is to provide a heavy-duty bearing transmission system to solve the problem of insufficient lubrication of the bearing assembly.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heavy-duty bearing transmission system, including a transmission shaft arranged in a machine body, an axial adjustment mechanism for driving the axial adjustment of the transmission shaft is arranged outside the transmission shaft, the axial adjustment mechanism includes a sleeve cup and a bearing assembly, the bearing assembly is arranged between the transmission shaft and the sleeve cup, an oil supply groove is circumferentially opened on one side of the outer surface of the sleeve cup, a plurality of oil supply holes are opened in the oil supply groove, and the oil supply holes are connected to the bearing assembly in the sleeve cup.

[0006] Optionally, an oil supply channel is formed between the oil supply groove and the body, and the oil supply channel is connected to the oil supply pipeline in the body.

[0007] Optionally, a fixed sleeve is provided in the body, the sleeve cup is axially slidably sleeved in the fixed sleeve, a refueling hole is provided on the fixed sleeve, and the oil supply groove is connected with the oil supply pipeline in the body through the refueling hole.

[0008] Optionally, a fixed sleeve is provided in the body, the sleeve cup is axially slidably sleeved in the fixed sleeve, a first groove is provided on the outer surface of the fixed sleeve, a plurality of refueling holes are provided in the first groove, and the oil supply groove is connected with the oil supply pipeline in the body through the refueling holes.

[0009] Optionally, a second groove is formed on the inner surface of the sleeve cup, and the second groove is connected to the oil supply groove through the oil supply hole.

[0010] Optionally, a lubrication channel is formed between the second groove of the cup and the bearing assembly.

[0011] Optionally, the oil supply pipeline is supplied with oil by an oil pump.

[0012] Optionally, a third groove is formed on the inner surface of the fixed sleeve, and the third groove is connected to the oil filling hole. When the sleeve cup slides axially in the fixed sleeve, the oil supply groove remains connected to the third groove.

[0013] Optionally, the width of the third groove is at least twice that of the oil supply groove.

[0014] Optionally, the number of the oil supply holes is 5, and the diameter of the oil supply holes is 10 mm.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model increases the lubrication points of the bearing assembly by arranging an oil supply groove and a plurality of oil supply holes on the sleeve cup, and supplies oil to the bearing assembly by manual oiling or by using the oil supply pipeline in the machine body, thereby ensuring the lubrication effect of the bearing and improving the bearing life. The bearing assembly also meets the needs of rapid replacement of continuous production lines.

[0017] 2. The utility model improves the oil filling speed by arranging multiple oil filling holes in the first groove on the outer surface of the fixed sleeve, and increases the lubrication range by arranging the second groove in the sleeve cup, thereby ensuring the lubrication effect on the bearing; the second groove on the outer surface of the fixed sleeve cooperates with the multiple oil filling holes to provide the oil supply speed; in addition, the third groove on the inner surface of the fixed sleeve cooperates with the oil supply groove, and the oil supply groove is always connected with the third groove on the inner surface of the fixed sleeve when the sleeve cup moves axially, thereby ensuring that during the axial adjustment of the transmission shaft, the lubricating oil can still enter the oil filling channel from the oil supply pipeline in the body, enter the oil supply channel through the oil filling hole, and then enter the lubrication channel through the oil supply hole, and enter the bearing assembly to achieve lubrication.

[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, in which:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 for Figure 1 A partial enlarged view of middle A.

[0022] Figure markings: 1-machine body, 2-transmission shaft, 3-cup, 301-keyway, 302-oil supply groove, 303-oil supply hole, 304-second groove, 31-fixed sleeve, 311-first groove, 312-oil filling hole, 313-third groove, 4-bearing assembly, 401-spherical roller bearing, 402-bearing sleeve, 403-thrust bearing, 5-pressure nut, 6-locking nut, 7-transverse worm gear, 8-worm, 9-reducer housing. DETAILED DESCRIPTION

[0023] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0024] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0025] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] See also Figure 1-2 , is a heavy-duty bearing transmission system, comprising a transmission shaft 2 arranged in a body 1, and an axial adjustment mechanism is provided outside the transmission shaft 2 for driving the axial adjustment of the transmission shaft, specifically, as Figure 1As shown, the axial adjustment mechanism includes a sleeve cup 3 and a bearing assembly 4. The bearing assembly 4 is assembled and installed between the transmission shaft 2 and the sleeve cup 3. The bearing assembly 4 includes a spherical roller bearing 401, a bearing sleeve 402 and two sets of thrust bearings 403. The thrust bearing 403 increases the axial bearing capacity, and the spherical roller bearing 401 ensures the radial bearing capacity; the transmission shaft 2 is provided with a clamping nut 5 and a locking nut 6 that press against the bearing assembly 4 in sequence on the output end side.

[0027] like Figure 2 As shown, an oil supply groove 302 is circumferentially provided on the outer surface of one side of the sleeve cup 3, and the width of the oil supply groove 302 is 30 mm. Five radial oil supply holes 303 with a diameter of φ10 are evenly distributed along the oil supply groove 302. The oil supply holes 303 are connected to the bearing assembly 4 in the sleeve cup 3, and an oil supply channel is formed between the oil supply groove 302 and the body 1. Specifically, since the contact gap between the sleeve cup 3 and the body 1 is small, a relatively closed cavity is formed between the oil supply groove 302 on the sleeve cup 3 and the body, and the lubricating oil mainly enters the bearing assembly 4 through the oil supply holes 303 along the oil supply groove 302, that is, An oil supply channel is formed; similarly, a second groove 304 with the same width as the oil supply groove 302 can also be opened on the inner ring of the sleeve cup 3, so that the lubricating oil passing through the oil supply hole 303 is connected in the sleeve cup 3, and a lubrication channel is formed between the second groove 304 of the sleeve cup 3 and the bearing assembly 4, so as to achieve better lubrication effect and a larger lubrication range; the oil supply channel is connected with the oil supply pipeline in the body 1, and the oil supply pipeline is supplied with oil by an oil pump. During the gap between roller changes (the transmission shaft 2 in this embodiment is the main component of the lower roller), manual oiling can also be carried out through the oil supply hole 303, and each oiling takes about 10 minutes.

[0028] In order to ensure the strength of the body 1, a fixed sleeve 31 that is in close contact with the sleeve cup 3 can also be provided at the position where the body 1 contacts the sleeve cup 3. In this embodiment, the fixed sleeve 31 is a ductile iron sleeve, which is fixed in the body 1 by threaded connection. A first groove 311 corresponding to the oil supply groove 302 and a radial oil filling hole 312 connected to the oil supply pipeline are circumferentially provided on the outer surface of the fixed sleeve 31. The first groove 311 on the outer surface of the fixed sleeve 31 forms a refueling channel with the body 1 to improve the refueling speed. The third groove 313 on the inner surface and the sleeve cup 3 form a refueling channel with the body 1 to improve the refueling speed. The oil supply groove 302 of the cup 3 forms an oil supply channel, and the lubricating oil enters the oil filling channel from the oil supply pipeline in the body 1, enters the oil supply channel through the oil filling hole 312, and then enters the lubrication channel through the oil supply hole 303, and enters the bearing assembly 4 for lubrication; a plurality of oil filling holes 312 can be provided, and the oil filling holes 312 are connected to the third groove 313 on the inner and outer surfaces of the fixing sleeve 31. The oil supply groove 302 is connected to the oil supply pipeline in the body 1 through the oil filling hole 312. The width of the first groove 311 and the third groove 313 is 60 mm, which is twice the width of the oil supply groove 302.

[0029] A keyway 301 is provided on the sleeve cup 3, so that the sleeve cup 3 is axially key-connected with the fixed sleeve 31 in the body 1. The sleeve cup 3 is axially slidably sleeved in the fixed sleeve 31. The length of the key is less than the length of the keyway 301, so that the sleeve cup 3 cannot rotate and can only be fine-tuned along the axial direction by a specific length (±30mm). During axial adjustment, the movement of the oil supply groove 302 of the sleeve cup 3 will not exceed the width range of the third groove 313. When the oil supply groove 302 moves axially with the sleeve cup, it is always connected with the third groove 313 on the inner surface of the fixed sleeve 31, and the oil pump can always perform the oil injection operation.

[0030] The cup 3 is also connected to the outside of the transverse worm wheel 7 and the worm 8 in sequence. The middle part of the inner ring of the transverse worm wheel 7 is provided with a trapezoidal thread. The cup 3 is provided with a trapezoidal thread matching it at the connection position with the transverse worm wheel 7. The worm 8 is driven by a reduction motor, and the worm 8 is meshed with the transverse worm wheel 7; a reducer housing 9 matching the transverse worm wheel 7 is provided on the outside of the transverse worm wheel 7. The reducer housing 9 is fixedly connected to the body 1, and the reducer housing 9 limits the axial position of the transverse worm wheel 7. When the driving motor is started, the worm 8 rotates. Since the reducer housing 9 limits the axial position of the transverse worm wheel 7, the rotation of the transverse worm wheel 7 makes the cup 3 form an axial threaded motion pair, thereby making the cup 3, the bearing assembly 4 and the transmission shaft 2 form a synchronous axial motion pair, and during the axial adjustment, the bearing assembly 4 and the transmission shaft 2 make an overall axial movement without affecting the rotation of the bearing. Specific implementation method:

[0032] When the utility model performs axial adjustment, the reduction motor drives the worm 8 to rotate, and the worm 8 drives the transverse worm wheel 7 to rotate. When the transverse worm wheel 7 rotates, the trapezoidal thread in the middle of the transverse worm wheel 7 drives the sleeve cup 3 to move axially, and the sleeve cup 3 drives the transmission shaft 2 to perform axial adjustment together through the bearing assembly 4. In this process, the oil pump continuously supplies oil, and the lubricating oil enters the oil supply channel from the oil supply pipeline in the body 1, enters the oil supply channel through the oil filling hole 312, and then enters the lubrication channel through the oil supply hole 303, and finally reaches the bearing assembly 4 for lubrication, thereby ensuring the lubrication effect of the bearing in the bearing assembly 4 and improving the service life of the bearing. In addition, during the axial adjustment, the axial movement of the oil supply groove 302 of the sleeve cup 3 will not exceed the width range of the first groove 311, and the oil pump can always perform the oil filling operation; during the roller changing gap, manual oiling can also be performed directly through the oil supply hole 303, and each oiling takes about 10 minutes.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A heavy-duty bearing transmission system, comprising a transmission shaft (2) arranged in a machine body (1), the transmission shaft (2) being provided with an axial adjustment mechanism for driving the transmission shaft (2) to adjust axially, the axial adjustment mechanism comprising a sleeve cup (3) and a bearing assembly (4), the bearing assembly (4) being arranged between the transmission shaft (2) and the sleeve cup (3), characterized in that: An oil supply groove (302) is circumferentially provided on one side of the outer surface of the sleeve cup (3), a plurality of oil supply holes (303) are provided in the oil supply groove (302), and the oil supply holes (303) are connected to the bearing assembly (4) in the sleeve cup (3).

2. The heavy-duty bearing transmission system according to claim 1, characterized in that: An oil supply channel is formed between the oil supply groove (302) and the machine body (1), and the oil supply channel is connected to the oil supply pipeline in the machine body (1).

3. The heavy-duty bearing transmission system according to claim 1, characterized in that: A fixed sleeve (31) is provided in the machine body (1), the sleeve cup (3) is axially slidably sleeved in the fixed sleeve (31), a refueling hole (312) is provided on the fixed sleeve (31), and the oil supply groove (302) is connected to the oil supply pipeline in the machine body (1) through the refueling hole (312).

4. The heavy-duty bearing transmission system according to claim 1, characterized in that: A fixed sleeve (31) is provided in the machine body (1), the sleeve cup (3) is axially slidably sleeved in the fixed sleeve (31), a first groove (311) is provided on the outer surface of the fixed sleeve (31), a plurality of oil filling holes (312) are provided in the first groove (311), and the oil supply groove (302) is connected to an oil supply pipeline in the machine body (1) through the oil filling holes (312).

5. The heavy-duty bearing transmission system according to any one of claims 1 to 4, characterized in that: The inner surface of the sleeve cup (3) is provided with a second groove (304), and the second groove (304) is connected to the oil supply groove (302) through the oil supply hole (303).

6. The heavy-duty bearing transmission system according to claim 5, characterized in that: A lubrication channel is formed between the second groove (304) of the sleeve cup (3) and the bearing assembly (4).

7. The heavy-duty bearing transmission system according to any one of claims 2 to 4, characterized in that: The oil supply pipeline is supplied with oil by an oil pump.

8. The heavy-duty bearing transmission system according to any one of claims 3 or 4, characterized in that: The inner surface of the fixed sleeve (31) is provided with a third groove (313), the third groove (313) is communicated with the oil filling hole (312), and when the sleeve cup (3) slides axially in the fixed sleeve (31), the oil supply groove (302) and the third groove (313) remain in communication.

9. The heavy-duty bearing transmission system according to claim 8, characterized in that: The width of the third groove (313) is at least twice that of the oil supply groove (302).

10. The heavy-duty bearing transmission system according to claim 1, characterized in that: The number of the oil supply holes (303) is 5, and the diameter of the oil supply holes (303) is 10 mm.

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