Large-bearing furnace roller
By adding support parts inside the roller body of the industrial furnace roller, the problem of minor deformation is easy to occur during long span or heavy loading and long -term heat treatment of furnace rollers, realizing higher mechanical strength and service life, reducing the frequency of replacement frequency And economic cost.
Patent Information
- Application Number
- CN202421269774.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-06-05
AI Technical Summary
Existing industrial furnace rollers are prone to slight deformation during long spans or heavy loads and long-term heat treatment, resulting in a decrease in life and frequent replacement, and are not economically efficient.
A large inheritance stove roller is designed to increase the mechanical strength by increasing the support parts inside the roller body. The supporting parts and the inner wall of the roller form a multi -point contact connection to ensure that the roller is stable at high temperature and heavy load conditions to avoid micro -deformation.
By increasing the support parts, the mechanical strength of the furnace roller is improved, the service life is extended, the frequency of replacement is reduced, and the economy is enhanced.
Smart Images
Figure CN222418575U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of industrial furnaces, in particular to a large load-bearing furnace roller. Background Art
[0002] In an industrial furnace, in order to allow the raw materials to pass through the furnace area smoothly, furnace rollers need to be installed in the furnace to drag the raw materials. At present, there are two main types of furnace rollers in industrial furnaces: one is a furnace roller without water cooling, and the other is a furnace roller with cooling water in the middle. Both types of furnace rollers have their own advantages and disadvantages. Although the furnace roller without water cooling will not take away the heat in the furnace, the furnace temperature is relatively high, and the furnace roller usually carries heavy workpieces. When the workpiece is long span or heavy load or long-term heat treatment, the furnace roller is often prone to slight deformation until it is scrapped and cannot be used, which eventually leads to a decrease in the life of the furnace roller, resulting in the need for frequent replacement, which is not economical. Summary of the invention
[0003] The utility model overcomes the shortcomings of the prior art and provides a large-load-bearing furnace roller.
[0004] In order to solve the above technical problems, the utility model is realized through the following technical scheme: a large load-bearing furnace roller, comprising a shaft head, a first transition roller sleeve, a roller body, a second transition roller sleeve and a reducer shaft head, wherein the shaft head, the first transition roller sleeve, the roller body, the second transition roller sleeve and the reducer shaft head are connected in sequence, a roller core is installed inside the roller body, and there are at least two points of contact connection between the roller core and the inner wall of the roller body, and the angle formed by the shadows of at least two contact points projected onto the cross section and the axis of the inner wall of the roller body is greater than 90°.
[0005] Preferably, the first transition roller sleeve and / or the second transition roller sleeve is provided with ventilation holes.
[0006] Preferably, the air on the left side of the roller core is connected to the air on the right side of the roller core.
[0007] Preferably, the roller core comprises a transverse axis, a support member is mounted on the transverse axis, and the support member is in contact with the inner wall of the roller body.
[0008] Preferably, the number of the support members is at least 2, and the distance between the support members is 0.3 m to 0.8 m.
[0009] Preferably, the number of the supports is 4 or 5, and the supports are arranged at equal distances from each other, and the distance between the supports is 0.5 m to 0.6 m.
[0010] Preferably, the support member is provided with heat holes.
[0011] Preferably, the support member is in a disc shape or a hub shape.
[0012] Preferably, the wall thickness of the support member is not less than 5 mm.
[0013] Preferably, roller core positioners are installed on both sides of the roller core, the left and right sides of the roller core positioner are connected to air, and the roller core positioner is sleeved inside the roller body.
[0014] Preferably, the roller core positioner is an annular sleeve.
[0015] Preferably, the annular sleeve is provided with a hollow structure.
[0016] Preferably, the roller core positioner is a coil spring.
[0017] Preferably, the roller core and the roller core positioner cannot be overlapped with each other.
[0018] Preferably, the roller core positioner is connected to the first transition roller sleeve via a short spring and / or the roller core positioner is connected to the second transition roller sleeve via a short spring.
[0019] Preferably, a roller ring is provided on the roller body.
[0020] Preferably, the roller core is a spiral blade or a spiral ring.
[0021] Preferably, the pitch of the spiral blade or spiral ring is not less than 80 mm.
[0022] Preferably, the wall thickness of the spiral blade or spiral ring sheet is not less than 5 mm.
[0023] Preferably, the roller core comprises an annular cylinder, and the outer diameter of the annular cylinder matches the inner diameter of the roller body.
[0024] Preferably, a hollow structure is provided on the annular cylinder.
[0025] Preferably, the roller core comprises at least one axial positioning portion, the outer diameter of the axial positioning portion is smaller than the inner wall diameter of the roller body, the axial positioning portion is provided with an axial locator in the radial direction, and the axial locator is in contact with the inner wall of the roller body.
[0026] Preferably, the axial positioner is an elastic damper.
[0027] Preferably, the elastic damper is a scroll spring, the interior of the scroll spring is sleeved on the roller core, and the exterior of the scroll spring is sleeved and contacts the inner wall of the roller body.
[0028] Compared with the prior art, the utility model has the following significant advantages: the technical solution of the utility model adopts the method of adding support parts inside the roller body to improve the mechanical strength of the roller body. When the roller body has a long span or the workpiece is heavily loaded or subjected to long-term heat treatment, the roller body can maintain its original state, eliminating micro-deformation, thereby improving the service life of the furnace roller, reducing the replacement frequency and achieving high economy.
[0029] The utility model is described in further detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 This is a schematic structural diagram of a large load-bearing furnace roller embodiment 1 of the utility model.
[0031] Figure 2 This is a schematic diagram of the roller core structure in Example 1.
[0032] Figure 3 This is the right view of the roller core in Example 1.
[0033] Figure 4 This is the right view of the roller core in Example 2.
[0034] Figure 5 This is a schematic diagram of the annular sleeve structure in Example 1.
[0035] Figure 6 for Figure 1 Schematic diagram of the structure of the middle J part.
[0036] Figure 7 It is a structural schematic diagram of a large load-bearing furnace roller embodiment 5 of the utility model.
[0037] Figure 8 This is the right view of the spiral ring segment in Example 6.
[0038] Fig. 9 This is the right side view of the spiral blade in Example 5.
[0039] Fig.10 It is a structural schematic diagram of a large load-bearing furnace roller embodiment 7 of the utility model.
[0040] Fig.11 This is a cross-sectional view of the annular cylinder in Example 7.
[0041] Fig.12 This is a schematic structural diagram of an embodiment 8 of a large load-bearing furnace roller of the utility model.
[0042] Fig.13 This is the right side view of the spiral spring in Example 8. DETAILED DESCRIPTION Example 1
[0043] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, a large load-bearing furnace roller comprises a shaft head 1, a first transition roller sleeve 2, a roller body 3, a second transition roller sleeve 6 and a reducer shaft head 4, wherein the shaft head 1, the first transition roller sleeve 2, the roller body 3, the second transition roller sleeve 6 and the reducer shaft head 4 are connected in sequence, a roller ring 5 is provided on the roller body 3, and a vent hole 8 is provided on the first transition roller sleeve 2 and the second transition roller sleeve 6. A roller core 7 is sleeved inside the roller body 3, and the roller core 7 is connected to the inner wall of the roller body 3 at least at two points, and the roller core 7 comprises a transverse axis 71, and a support member 72 is installed on the transverse axis 71, and the support member 72 contacts the inner wall of the roller body 3, and the support member 72 is in a round cake shape, and the wall thickness of the support member 72 is 6 mm, and the support member 72 is on the support member 72. A hot air hole 9 is provided, the number of the support members 72 is 3, the support members 72 are arranged at equal distances, the distance between the support members 72 is 0.7 meters, the air on the left side of the roller core 7 is connected with the air on the right side of the roller core 7 through the hot air hole 9, roller core positioners are installed on both sides of the roller core 7, the roller core positioner is sleeved inside the roller body 3, the roller core 7 and the roller core positioner are sleeved without overlapping each other, the air on the left and right sides of the roller core positioner are connected, the roller core positioner is an annular sleeve 10, and a hollow structure 16 is provided on the annular sleeve 10, the roller core positioner is connected to the first transition roller sleeve 2 by a short spring 11, and the roller core positioner is connected to the second transition roller sleeve 6 by a short spring 11.
[0044] Working principle: In the utility model, the first transition roller sleeve 2 and the second transition roller sleeve 6 are provided with vent holes 8, and an air circulation line is formed between the vent holes 8, the short spring 11, the annular sleeve 10, and the hot air hole 9. The air circulation line releases the heat expansion air in the large load-bearing furnace roller in both directions, thereby avoiding the hot air in the large load-bearing furnace roller from forming a heat expansion pressure on the large load-bearing furnace roller, and ensuring the safe operation of the furnace roller. The support member 72 forms a multi-point mechanical support for the inner wall of the roller body 3, and forms a support structure inside the large load-bearing furnace roller, which improves the mechanical strength of the roller body. When the roller body has a long span or the workpiece is heavily loaded or heat treated for a long time, the roller body can maintain its original state, eliminating the micro-deformation phenomenon and improving the service life of the large load-bearing furnace roller. The short spring 11, the annular sleeve 10, the support member 72 and the roller body 3 are connected by contact without welding points, which can ensure that there are no welding points on the inner wall of the roller body 3, thereby avoiding negative impact on the mechanical properties of the roller body 3 material, effectively protecting the mechanical properties of the roller body 3, reducing the process steps in the production of large-load-bearing furnace rollers, and saving manufacturing costs. Example 2
[0045] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, on the basis of Example 1, the support member 72 is adjusted to a hub shape, that is, a spoke shape of a wheel, and the hollowing out of the middle of the spoke shape can form a hot air hole 9, which can also achieve the technical effect of the utility model and can reduce the weight of the whole machine to achieve a better use effect. Example 3
[0046] On the basis of Example 1 or Example 2, the roller core positioner is a coil spring, and one end of the coil spring directly presses the roller core 7, and the other end directly presses the first transition roller sleeve 2; similarly, one end of the coil spring on the other side directly presses the other side of the roller core 7, and the other end directly presses the second transition roller sleeve 6. Such a mechanism can further simplify the structure of Example 1 and Example 2, achieve a more economical and process-reducing technical effect, and maintain the roller body mechanical properties of the large load-bearing furnace roller in Example 1 or 2. Example 4
[0047] In Example 1, the support members 72 all realize the air circulation line through the hot air holes 9. In the actual production process, in order to further reduce the manufacturing cost and to achieve the technical effect that the air on the left side of the roller core 7 is connected with the air on the right side of the roller core 7, when the support members 72 are manufactured into a circular surface, a high-precision manufacturing method is not adopted on the edge of the circular surface, but a relatively rough round edge is adopted. In this way, the hot air holes 9 can be eliminated. Since intermittent gaps must be formed between the rough round edge and the inner wall of the roller body 3, the air on the left side of the roller core is connected with the air on the right side of the roller core through the leakage of hot air, which can simplify the manufacturing process of large-load-bearing furnace rollers to the greatest extent and save manufacturing costs. Example 5
[0048] like Figure 7 and Fig. 9 As shown, a large load-bearing furnace roller comprises an axis head 1, a first transition roller sleeve 2, a roller body 3, a second transition roller sleeve 6 and a reducer axis head 4, wherein the axis head 1, the first transition roller sleeve 2, the roller body 3, the second transition roller sleeve 6 and the reducer axis head 4 are connected in sequence, a roller ring 5 is provided on the roller body 3, a roller core 7 is sleeved in the roller body 3, and the roller core 7 is connected to the inner wall of the roller body 3 at least at two points of contact, the first transition roller sleeve 2 and the second transition roller sleeve 6 are provided with air vents 8, the roller core 7 is a spiral blade, the pitch of the spiral blade is 100 mm, the wall thickness of the spiral blade is 6 mm, the air on the left side of the roller core 7 is connected to the air on the right side of the roller core 7, roller core positioners are installed on both sides of the roller core 7, the roller core positioner is sleeved inside the roller body 3, the air on the left and right sides of the roller core positioner is connected, and the roller core positioner is an annular sleeve 10.
[0049] Example 5 is the same as Example 1, in which the first transition roller sleeve 2 and the second transition roller sleeve 6 are provided with vents 8, and an air circulation line is formed between the vents 8, the annular sleeve 10, and the spiral blades. The air circulation line releases the heat-expanded air in the large load-bearing furnace roller in both directions, thereby ensuring the safe operation of the large load-bearing furnace roller. The spiral blades form multi-point mechanical support for the inner wall of the roller body 3, forming a support structure inside the large load-bearing furnace roller, thereby improving the mechanical strength of the roller body. When the roller body has a long span or the workpiece is heavily loaded or subjected to long-term heat treatment, the roller body can maintain its original state, eliminating micro-deformation and prolonging the service life of the large load-bearing furnace roller. The annular sleeve 10, the spiral blades and the roller body 3 are connected in contact without welding points, thereby ensuring that there are no welding points on the inner wall of the roller body 3, thereby avoiding negative effects on the mechanical properties of the roller body 3 material, effectively protecting the mechanical properties of the roller body 3, and reducing the process steps in the production link of the large load-bearing furnace roller, thereby saving manufacturing costs. Example 6
[0050] like Figure 7 and Figure 8 As shown, in order to reduce the weight of the spiral blades in Example 5, in the actual production process, on the basis of Example 5, the spiral blades can be adjusted to spiral ring sheets, the pitch of the spiral ring sheets is 120 mm, and the wall thickness of the spiral ring sheets is 8 mm, which not only achieves the technical effect described in Example 5, but also further reduces the dead weight of the large load-bearing furnace roller, reduces the burden on the roller body 3, is more beneficial to eliminate micro-deformation, and improves the service life of the large load-bearing furnace roller. Example 7
[0051] like Fig.10 and Fig.11 As shown, a large load-bearing furnace roller comprises a shaft head 1, a first transition roller sleeve 2, a roller body 3, a second transition roller sleeve 6 and a reducer shaft head 4, wherein the shaft head 1, the first transition roller sleeve 2, the roller body 3, the second transition roller sleeve 6 and the reducer shaft head 4 are connected in sequence, a roller ring 5 is provided on the roller body 3, and air vents 8 are provided on the first transition roller sleeve 2 and the second transition roller sleeve 6. A roller core 7 is sleeved inside the roller body 3, and the roller core 7 is an annular cylinder, and the outer diameter of the annular cylinder matches the inner diameter of the roller body 3. A hollow structure 16 is provided on the annular cylinder, and there are at least two points of contact connection between the roller core 7 and the inner wall of the roller body 3, and the air on the left side of the roller core 7 is connected to the air on the right side of the roller core 7.
[0052] In Example 7, the roller core 7 adopts the simplest structural method. The air circulation route is formed by the annular tube and the air vent 8. The hollow structure 16 is provided on the annular tube to reduce the weight of the annular tube. The outer diameter of the annular tube matches the inner diameter of the roller body 3 to effectively form a structural support for the roller body 3, thereby eliminating the micro-deformation of the roller body 3 and improving the service life of the large-load furnace roller. Example 8
[0053] like Fig.12 , Figure 2 , Figure 3 and Fig.13 As shown, a large load-bearing furnace roller comprises a shaft head 1, a first transition roller sleeve 2, a roller body 3, a second transition roller sleeve 6 and a reducer shaft head 4, wherein the shaft head 1, the first transition roller sleeve 2, the roller body 3, the second transition roller sleeve 6 and the reducer shaft head 4 are connected in sequence, a roller ring 5 is provided on the roller body 3, and a vent hole 8 is provided on the first transition roller sleeve 2 and the second transition roller sleeve 6. A roller core 7 is sleeved inside the roller body 3, and there are at least two points of contact between the roller core 7 and the inner wall of the roller body 3. The roller core 7 comprises a transverse axis 71, and a support member 72 is installed on the transverse axis 71, and the support member 72 contacts the inner wall of the roller body 3. 72 is in the shape of a round cake, the wall thickness of the support member 72 is 6 mm, a hot air hole 9 is provided on the support member 72, the number of the support members 72 is 3, the support members 72 are arranged at equal distances, the distance between the support members 72 is 0.7 meters, the air on the left side of the roller core 7 is connected with the air on the right side of the roller core 7 through the hot air hole 9, any section on the horizontal axis 71 is defined as an axial positioning part, the outer diameter of the axial positioning part is smaller than the inner wall diameter of the roller body 3, the axial positioning part is provided with an axial positioner 12 in the radial direction, the axial positioner 12 is a spiral spring, and the outer part of the spiral spring is sheathed in contact with the inner wall of the roller body 3.
[0054] In Example 8, a new way of fixing the roller core 7 is adopted, in which damping fixation is formed in the radial direction. This method is more economical and has a more convenient manufacturing process than the axial fixing of the roller core in the previous embodiment. The hot air holes 9 and the air vents 8 form air circulation routes to release the thermal expansion pressure of the gas. The support members 72 form multi-point mechanical support for the inner wall of the roller body 3, and form a support structure inside the large load-bearing furnace roller, thereby eliminating the micro-deformation of the roller body and improving the service life of the large load-bearing furnace roller.
[0055] In Embodiment 8, in addition to being arranged on the transverse axis 71, the axial positioning portion can also be additionally arranged on the left and right sides of the roller core 7, for example, Fig.12 A short shaft is welded to the left side surface of the leftmost support member 72, the short shaft is set as an axial positioning portion, and an axial positioner 12 is set on the axial positioning portion, so as to achieve the technical effect of Example 8.
[0056] In addition to the above-mentioned embodiments, other undescribed implementation methods should also be within the scope of protection of the present utility model. The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Technicians in the technical field to which the present utility model belongs may make various modifications or supplements to the described specific embodiments or replace them in a similar manner, but they will not deviate from the spirit of the present utility model or exceed the scope defined by the attached claims. Although this article is explained through specific terms, it does not exclude the possibility of using other terms. These terms are used only to conveniently describe and explain the essence of the present utility model. Interpreting them as any additional restrictions is contrary to the spirit of the present utility model.
Claims
1. A large load-bearing furnace roller, comprising a shaft head (1), a first transition roller sleeve (2), a roller body (3), a second transition roller sleeve (6) and a reducer shaft head (4), wherein the shaft head (1), the first transition roller sleeve (2), the roller body (3), the second transition roller sleeve (6) and the reducer shaft head (4) are connected in sequence, and characterized in that: A roller core (7) is sleeved inside the roller body (3), the roller core (7) is connected to the inner wall of the roller body (3) at at least two points of contact, and the angle formed between the shadows of at least two contact points projected onto the cross section and the axis of the inner wall of the roller body (3) is greater than 90°.
2. A large load-bearing furnace roller according to claim 1, characterized in that: The first transition roller sleeve (2) and / or the second transition roller sleeve (6) is provided with a vent hole (8).
3. A large load-bearing furnace roller according to claim 2, characterized in that: The air on the left side of the roller core (7) is connected to the air on the right side of the roller core (7).
4. A large load-bearing furnace roller according to claim 1, 2 or 3, characterized in that: The roller core (7) comprises a transverse axis (71), a support member (72) is mounted on the transverse axis (71), and the support member (72) is in contact with the inner wall of the roller body (3).
5. A large load-bearing furnace roller according to claim 4, characterized in that: The number of the support members (72) is at least 2, and the distance between the support members (72) is 0.3 m to 0.8 m.
6. A large load-bearing furnace roller according to claim 5, characterized in that: The number of the support members (72) is 4 or 5, and the support members (72) are arranged at equal distances from each other, and the distance between the support members (72) is 0.5 m to 0.6 m.
7. A large load-bearing furnace roller according to claim 4, characterized in that: The support member (72) is provided with a hot air hole (9).
8. A large load-bearing furnace roller according to claim 4, characterized in that: The support member (72) is in the shape of a round cake or a wheel hub.
9. A large load-bearing furnace roller according to claim 8, characterized in that: The wall thickness of the support member (72) is not less than 5 mm.
10. A large load-bearing furnace roller according to claim 1, 2 or 3, characterized in that: Roller core positioners are installed on both sides of the roller core (7), the left and right sides of the roller core positioner are connected to air, and the roller core positioner is sleeved inside the roller body (3).
11. A large load-bearing furnace roller according to claim 10, characterized in that: The roller core positioner is an annular sleeve (10).
12. A large load-bearing furnace roller according to claim 11, characterized in that: The annular sleeve (10) is provided with a hollow structure.
13. A large load-bearing furnace roller according to claim 10, characterized in that: The roller core positioner is a coil spring.
14. A large load-bearing furnace roller according to claim 10, characterized in that: The roller core (7) and the roller core positioner cannot overlap each other.
15. The large load-bearing furnace roller according to claim 10, characterized in that: The roller core positioner is connected to the first transition roller sleeve (2) via a short spring (11) and / or the roller core positioner is connected to the second transition roller sleeve (6) via a short spring (11).
16. A large load-bearing furnace roller according to claim 1, 2 or 3, characterized in that: A roller ring (5) is provided on the roller body (3).
17. A large load-bearing furnace roller according to claim 1, 2 or 3, characterized in that: The roller core (7) is a spiral blade or a spiral ring.
18. A large load-bearing furnace roller according to claim 17, characterized in that: The pitch of the spiral blade or spiral ring piece is not less than 80mm.
19. A large load-bearing furnace roller according to claim 17, characterized in that: The wall thickness of the spiral blade or spiral ring piece is not less than 5mm.
20. A large load-bearing furnace roller according to claim 1, 2 or 3, characterized in that: The roller core (7) comprises an annular cylinder, the outer diameter of the annular cylinder matching the inner diameter of the roller body (3).
21. A large load-bearing furnace roller according to claim 20, characterized in that: The annular cylinder is provided with a hollow structure.
22. A large load-bearing furnace roller according to claim 1, 2 or 3, characterized in that: The roller core (7) comprises at least one axial positioning portion, the outer diameter of the axial positioning portion is smaller than the inner wall diameter of the roller body (3), and the axial positioning portion is provided with an axial positioner (12) in the radial direction, and the axial positioner (12) is in contact with the inner wall of the roller body (3).
23. A large load-bearing furnace roller according to claim 22, characterized in that: The axial positioner (12) is an elastic damper.
24. A large load-bearing furnace roller according to claim 23, characterized in that: The elastic damper is a scroll spring, the interior of the scroll spring is sleeved on the roller core (7), and the exterior of the scroll spring is sleeved and contacts the inner wall of the roller body (3).