Supporting roller structure

Abstract

The utility model provides a back-up roll structure which comprises a shaft, a roll body, two VA type sealing rings, two first check rings, two deep groove ball bearings, two second check rings, two needle bearings, a spacer ring and two spacer bushes, the two ends of the spacer ring make contact with the two needle bearings, and the needle bearings and the shaft are arranged in the roll body in an interference fit mode. One end of the second check ring is in contact with a retainer of the needle bearing, the other end of the second check ring is in contact with an outer ring of the deep groove ball bearing, one end of the first check ring is in contact with the outer ring of the deep groove ball bearing, the other end of the first check ring is in contact with the VA type sealing ring, and the deep groove ball bearing is in interference fit with the shaft. A fixed gap is reserved between the first check ring, the second check ring, the spacer ring and the shaft, the low end face of the spacer bush abuts against an inner ring of the deep groove ball bearing, and the high end face of the spacer bush pushes the VA type sealing ring to abut against the first check ring. The supporting roller not only can meet the requirement for oil-gas lubrication in the supporting roller, but also has high bearing capacity.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal processing technical field, concretely relates to a support roller structure. BACKGROUND

[0002] Four roller straightening machine is a kind of machine equipment commonly used in metal processing field, its main function is to make metal material become flat and eliminate the stress inside material by the rolling of working roller, to reach the effect of straightening. The structure of its four roller box is mainly composed of box body, support roller seat, working roller seat, support roller, working roller. Because the existing four roller box of Ma Gang galvanizing line is found that the internal bearing of support roller is prone to fracture after a period of use. After analysis, it is found that it is caused by two reasons: 1, the pressure of working roller on support roller in the straightening process is too large to exceed the bearing capacity of selected bearing, causing fracture. 2, because the number of support rollers is large, only relying on the internal lubricating grease of support roller for lubrication can not play a long-term lubrication effect, and the lubricating grease itself is easy to oxidize and its viscosity is reduced due to high temperature environment, so that the lubrication effect is poor, causing fracture. SUMMARY

[0003] The utility model discloses a support roller structure to solve the above-mentioned technical problem, can satisfy the oil gas lubrication requirement in the support roller inside, and has higher bearing capacity.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] A support roller structure comprises a shaft, a roller body, two VA type sealing rings, two first retaining rings, two deep groove ball bearings, two second retaining rings, two needle bearings, a spacer ring and two spacer sleeves. The two ends of the spacer ring are in contact with the two needle bearings. The needle bearings are fitted into the roller body in interference fit with the shaft. One end of the second retaining ring is in contact with the retainer of the needle bearing. The other end of the second retaining ring is in contact with the outer ring of the deep groove ball bearing. One end of the first retaining ring is in contact with the outer ring of the deep groove ball bearing. The other end of the first retaining ring is in contact with the VA type sealing ring. The deep groove ball bearing is in interference fit with the shaft. A fixed gap is left between the first retaining ring, the second retaining ring, the spacer ring and the shaft. The low end face of the spacer sleeve abuts against the inner ring of the deep groove ball bearing. The high end face of the spacer sleeve pushes the VA type sealing ring to abut against the first retaining ring.

[0006] In one embodiment of the utility model, the second retaining ring and the spacer ring are both made of 42CrMo material.

[0007] In one embodiment of the utility model, the needle bearing is made of GCr15 material.

[0008] In an embodiment of the utility model, the two VA type sealing rings, two first retaining rings, two deep groove ball bearings, two second retaining rings, two needle bearings and two spacer sleeves are symmetrically arranged.

[0009] The utility model discloses beneficial effect has:

[0010] The utility model discloses a bearing's outer ring symmetry has 2 needle bearings, 2 needle bearings middle installation has the spacer ring, and the fixed gap is left between the inner ring of spacer ring and the outer ring of axle, and the second retaining ring is installed in the middle of 2 needle bearings and 2 deep groove ball bearings, and the fixed gap is also left between the inner ring of 2 second retaining rings and the outer ring of axle, thereby can make oil mist to support roll inside play lubricating effect, and the inner ring of 2 needle bearings and 2 deep groove ball bearings all adopt the mode of interference fit with the outer ring of axle, thereby, not only can satisfy the oil gas lubrication requirement to support roll inside, and have higher carrying capacity. DRAWINGS

[0011] Figure 1 It is the schematic diagram of support roll structure of the utility model embodiment. CONCRETE IMPLEMENTING METHOD

[0012] The technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment, and apparently, the described embodiment only is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments that the ordinary skilled in the art obtains without making the creative labor belong to the range of protection of the utility model.

[0013] As Figure 1 The utility model discloses support roll structure, including: axle 1, roll body 2, 2 VA type sealing rings 3, 2 first retaining rings 4, 2 deep groove ball bearings 5, 2 second retaining rings 6, 2 needle bearings 7, spacer ring 8 and 2 spacer sleeves 9, the both ends of spacer ring 8 and 2 needle bearings 7 contact, and needle bearing 7 and axle 1 are packed into the inside of roll body 2 with interference fit, and the one end of second retaining ring 6 and the retainer of needle bearing 7 contact, and the other end of second retaining ring 6 and the outer ring of deep groove ball bearing 5 contact, and the one end of first retaining ring 4 and the outer ring of deep groove ball bearing 5 contact, and the other end of first retaining ring 4 and VA type sealing ring 3 contact, and deep groove ball bearing 5 and axle 1 are packed with interference fit, and the fixed gap is left between first retaining ring 4, second retaining ring 6 and spacer ring 8 and axle 1, and the low end surface of spacer sleeve 9 pushes against the inner ring of deep groove ball bearing 5, and the high end surface of spacer sleeve 9 promotes VA type sealing ring 3 to push against first retaining ring 4.

[0014] In an embodiment of the utility model, in order to improve the carrying capacity of shaft 1, 2 needle bearings 7 are installed on the outer ring of shaft 1, and the interference fit is used between 2 needle bearings 7 and shaft 1, and the interference fit is also used between the inner ring of 2 deep groove ball bearings 5 and the outer ring of shaft 1, thereby the carrying capacity of shaft 1 can be improved. Wherein, 2 needle bearings 7 are all GCr15 material.

[0015] In an embodiment of the utility model, in order to make the oil mist play the lubricating effect on 2 needle bearings 7 and 2 deep groove ball bearings 5, 1 spacer ring 8 is installed between 2 needle bearings 7, and fixed gap is left between the inner ring of spacer ring 8 and the outer ring of shaft 1, thereby when the oil gas enters the inside of support roller from the oil inlet at both ends of shaft 1, the gap between the inner ring of spacer ring 8 and the outer ring of shaft 1 can make the inside of support roller have enough gap to discharge the entering oil gas, thereby playing the lubricating effect on 2 needle bearings 7 and 2 deep groove ball bearings 5, and the inner ring of 2 second retaining rings 6 and the outer ring of shaft 1 also have fixed gap, guaranteeing that the oil mist can smoothly pass through the gap between the inner ring of 2 second retaining rings 6 and the outer ring of shaft 1, thereby playing the overall lubricating effect on the inside of support roller. Wherein, 2 second retaining rings 6 and spacer ring are all 42CrMo material.

[0016] In an embodiment of the utility model, 2 VA type sealing rings 3, 2 first retaining rings 4, 2 deep groove ball bearings 5, 2 second retaining rings 6, 2 needle bearings 7 and 2 spacer sleeves 9 are all symmetrically arranged.

[0017] In summary, the utility model discloses a bearing, 2 needle bearings are symmetrically installed on the outer ring of bearing, spacer ring is installed between 2 needle bearings, fixed gap is left between the inner ring of spacer ring and the outer ring of shaft, and second retaining ring is installed between 2 needle bearings and 2 deep groove ball bearings, and fixed gap is also left between the inner ring of 2 second retaining rings and the outer ring of shaft, thereby the oil mist can play the lubricating effect on the inside of support roller, and the interference fit is used between the inner ring of 2 needle bearings and 2 deep groove ball bearings and the outer ring of shaft, thereby not only the oil gas lubricating requirement of the inside of support roller can be met, but also the carrying capacity is higher.

[0018] In the description of the utility model, the terms "first", "second" are only used for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. The meaning of "multiple" is 2 or more than 2, unless otherwise specifically limited.

[0019] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0020] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0021] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0022] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A support roller structure, characterized in that: include: A shaft, a roller body, two VA-type sealing rings, two first retaining rings, two deep groove ball bearings, two second retaining rings, two needle roller bearings, a spacer ring and two spacer sleeves, both ends of the spacer ring are in contact with the two needle roller bearings, the needle roller bearings and the shaft are interference fit into the roller body, one end of the second retaining ring is in contact with the retaining frame of the needle roller bearing, the other end of the second retaining ring is in contact with the outer ring of the deep groove ball bearing, one end of the first retaining ring is in contact with the outer ring of the deep groove ball bearing, the other end of the first retaining ring is in contact with the VA-type sealing ring, the deep groove ball bearing and the shaft are interference fit, a fixed gap is left between the first retaining ring, the second retaining ring and the spacer ring and the shaft, the lower end surface of the spacer sleeve is against the inner ring of the deep groove ball bearing, and the high end surface of the spacer sleeve pushes the VA-type sealing ring to resist the first retaining ring.

2. The support roller structure according to claim 1, characterized in that: The second retaining ring and the spacer ring are both made of 42CrMo material.

3. The support roller structure according to claim 2, characterized in that: The needle roller bearing is made of GCr15 material.

4. The support roller structure according to claim 3, characterized in that: The two VA-type sealing rings, the two first retaining rings, the two deep groove ball bearings, the two second retaining rings, the two needle roller bearings and the two spacers are all arranged symmetrically.

Images