Positioning device for rotary kiln wheel belt
By using staggered baffles and hollow pads, the wear problem of the rotary kiln tire and pads is solved, achieving stable tire rotation and thermal stress relief, simplifying the maintenance process, and improving the stability and lifespan of the equipment.
Patent Information
- Application Number
- CN202423213966.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Traditional rotary kiln tires and pads suffer from severe wear and high thermal stress. Furthermore, traditional pads are prone to deformation, affecting equipment stability and lifespan.
The upper and lower baffle groups are staggered, with positioning pads and tires. The pads are designed as hollow structures, which, together with the baffle groups, buffer stress and form a heat dissipation box to reduce heat conduction.
It achieves smooth rotation of the tire and pad, reduces thermal stress and wear, simplifies the maintenance process, and improves the stability and service life of the equipment.
Smart Images
Figure CN223610556U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to rotary kiln technical field, concretely relates to a positioning device for rotary kiln wheel belt. BACKGROUND
[0002] The main transmission of the rotary kiln is the kiln size gear pair transmission, and the supporting wheel and the wheel belt combination is the auxiliary transmission. The wheel belt functions to transmit the entire load of the cylinder (including the refractory bricks, the materials and the self weight) to the supporting wheel, and enables the cylinder to rotate smoothly on the supporting wheel. The cross section of the wheel belt is a hollow box shape. The installation mode of the wheel belt on the cylinder usually adopts a loose wheel belt, which is not directly installed on the simple body section, but is installed on a pad, so that a natural ventilation channel is formed between the cylinder and the wheel belt. The pad is a structure that integrates the wheel belt and the cylinder, which can avoid the "necking temperature stress" between the wheel belt and the cylinder. The heat dissipation is strengthened, the heat conduction of the kiln body to the wheel belt is reduced, and the temperature difference between the inner and outer edges of the wheel belt is small. The temperature difference changes little, thereby reducing the temperature stress on the wheel belt. When the kiln is running, the wheel belt and the simple body will slide relatively along the axial direction. At this time, the pad plays a role of protecting the cylinder. On both sides of the wheel belt, a baffle or a stop ring is used to limit the wheel belt from moving along the cylinder.
[0003] Analysis of the stress conditions of each part of the positioning device when the rotary kiln rotates: when the rotary kiln rotates, ① the wheel belt is subjected to a torsion force in the opposite direction of rotation and a pushing force of the hydraulic blocking wheel for controlling the up and down movement of the kiln; ② the pad is subjected to an impact force generated between the cylinder and the wheel belt and a pushing force generated by the up and down movement of the kiln; ③ the stop bar is subjected to a friction force generated by the slip difference between the cylinder and the wheel belt with a certain gap and an out of sync, and a pushing force generated by the up and down movement of the kiln; ④ the maximum stress of each part comes from the reaction force of the cylinder (including the weight of the refractory bricks, the materials and the self weight) when rotating. The above-mentioned several stresses exist at the same time and interact with each other.
[0004] Compared with the utility model, the traditional pad has the following shortcomings: 1. The traditional pad has a solid structure, and the heat conduction is fast. The heat of the rotary kiln cylinder is quickly transmitted to the wheel belt, the temperature difference between the inner and outer edges of the wheel belt is large, and thermal stress is easily formed; 2. The traditional pad is relatively thin, and is easily deformed under high temperature and high pressure. At the same time, the impact force of the cylinder when rotating is also easily transmitted to the wheel belt, which easily causes the mutual abrasion of the pad and the wheel belt. CONTENT OF THE UTILITY MODEL
[0005] The utility model overcomes the shortcomings of the prior art, and provides a positioning device for a rotary kiln wheel belt.
[0006] In order to achieve the above-mentioned purpose, the utility model is realized by the following technical scheme.
[0007] The positioning device for the rotary kiln wheel belt comprises a cylinder, which is a circular cylindrical structure, a circular ring-shaped wheel belt is sleeved on the outer side of the cylinder, a circular array of base plates is arranged between the outer side of the cylinder and the wheel belt, a group of upper side baffle strips is arranged between the ends of any two adjacent base plates, and a group of lower side baffle strips is arranged at the middle of the other end of each base plate.
[0008] Further, the base plate is a square cylindrical structure with through holes at both ends, a square clamping groove is arranged at the middle of the end of the base plate provided with the group of lower side baffle strips; a row of holes is arranged on the inner side end surface of the base plate, the inner side end surface of the base plate is in contact with the outer side surface of the cylinder, and the outer side end surface of the base plate is in contact with the inner side surface of the wheel belt; the two ends of the base plate respectively extend to the outside of the two sides of the wheel belt.
[0009] Further, the group of upper side baffle strips comprises a first baffle strip, a second baffle strip and a first stop block; the first baffle strip is a right-angled triangular plate structure, the plane where the first right-angled edge of the first baffle strip is located is fixedly connected with the second baffle strip, and a stress groove is arranged at the end of the plane where the second right-angled edge of the first baffle strip is located, close to the plane where the first right-angled edge is located; the second baffle strip is a T-shaped plate structure, comprising a horizontal section and a vertical section, the horizontal section and the vertical section are perpendicular to each other, and one end of the vertical section is fixedly connected with the middle part of the horizontal section.
[0010] Further, the plane where the first right-angled edge of the first baffle strip is located is fixedly connected with the outer side surface of the vertical section of the second baffle strip, and the lower end of the plane where the first right-angled edge of the first baffle strip is located is flush with the lower end of the vertical section of the second baffle strip; the plane where the first baffle strip is located is perpendicular to the plane where the second baffle strip is located.
[0011] Further, the first baffle strip and the vertical section of the second baffle strip are arranged between the two adjacent base plates, the horizontal section and the vertical section of the second baffle strip are both in contact with the wheel belt, the plane where the second right-angled edge of the first baffle strip is located is welded with the outer side surface of the cylinder, and the two ends of the horizontal section of the second baffle strip are respectively located at the outer sides of the two base plates.
[0012] Further, the first stop block is a cubic structure, two first stop blocks are welded on the two base plates respectively, and the two first stop blocks are located on the side of the second baffle strip away from the wheel belt; a gap is maintained between the two first stop blocks and the horizontal section of the second baffle strip.
[0013] Further, the lower side of the group of strips includes a third strip, a fourth strip, a second block; the third strip is a right triangle plate structure, the first right angle edge of the third strip is fixedly connected with the fourth strip, and a stress groove is arranged at one end of the plane where the second right angle edge of the third strip is located and close to the plane where the first right angle edge is located; the fourth strip is a T-shaped plate structure, including a horizontal section and a vertical section, and the horizontal section and the vertical section are perpendicular to each other, and one end of the vertical section is fixedly connected with the middle part of the horizontal section.
[0014] Further, the first right angle edge of the third strip is fixedly connected with the outer side of the vertical section of the fourth strip, and the lower end of the plane where the first right angle edge of the third strip is located is flush with the lower end of the vertical section of the fourth strip; the plane where the second right angle edge of the third strip is located is perpendicular to the plane where the fourth strip is located.
[0015] Further, the third strip and the vertical section of the fourth strip are arranged in the clamping groove at one end of the corresponding pad plate, the horizontal section and the vertical section of the fourth strip are in contact with the belt, the plane where the second right angle edge of the third strip is located is welded with the outer side of the cylinder, and the two ends of the horizontal section of the fourth strip are located outside the two pad plates.
[0016] Further, the second block is a cubic structure, two second blocks are welded on the two pad plates, and the two second blocks are located on the side, away from the belt, of the fourth strip; and a gap is maintained between the two second blocks and the horizontal section of the fourth strip.
[0017] The beneficial effects of the present application compared with the prior art are as follows:
[0018] The positioning device for the rotary kiln belt provided by the present application positions the pad plate and the belt by staggered arrangement of the upper side of the group of strips and the lower side of the group of strips, so that the rotary kiln cylinder drives the belt to stably rotate on the supporting roller, and the axial movement of the belt and the pad plate is prevented. The upper side of the group of strips and the lower side of the group of strips are consumable parts, which are convenient, simple, safe, more efficient, and simplify the process, so that the purpose of convenient maintenance is achieved. BRIEF DESCRIPTION OF DRAWINGS
[0019] The present application will be further described in detail below with reference to the drawings:
[0020] Figure 1 is a side view of the whole of the present application;
[0021] Figure 2 is a top view of the whole of the present application;
[0022] Figure 3 is a three-dimensional schematic view of the first strip and the third strip;
[0023] Figure 4 is a side view of the first and third strips;
[0024] Figure 5 is a perspective view of the second and fourth strips;
[0025] Figure 6 is a front view of the second and fourth strips;
[0026] Figure 7 is a perspective view of the cushion plate 5;
[0027] Figure 8 is a perspective view of the combination of the first and second strips and the combination of the third and fourth strips;
[0028] Wherein, 1 is the cylinder, 2 is the first strip, 3 is the first block, 4 is the second strip, 5 is the cushion block, 6 is the wheel belt, 7 is the fourth strip, 8 is the second block, 9 is the third strip. DETAILED DESCRIPTION
[0029] In order to make the technical problems, technical schemes and beneficial effects of the utility model clearer and more apparent, the utility model is further described in detail in combination with embodiments and drawings. It should be understood that the specific embodiments described herein are only used to explain the utility model and do not limit the utility model. The technical scheme of the utility model is described in detail below in combination with embodiments and drawings, but the protection scope is not limited by this.
[0030] As shown in Figure 1 The utility model provides a positioning device for rotary kiln wheel belt, including cylinder 1, the cylinder 1 is circular cylindrical structure, is equipped with a circular ring wheel belt 6 on the outside of cylinder 1, is provided with a circle circular array cushion plate 5 between the outside of cylinder 1 and wheel belt 6, is provided with a group of upper side strip group between the one end of any two adjacent cushion plate 5, is provided with a group of lower side strip group in the middle of the other end of each cushion plate 5, and the upper side strip group and lower side strip group are staggered arrangement.
[0031] The cushion plate 5 is square cylindrical structure through both ends, and a square clamping groove is arranged in the middle of one end of the cushion plate 5 provided with the lower side strip group. A row of openings is arranged on the inner side end surface of the cushion plate 5 to eliminate stress, and the inner side end surface of the cushion plate (5) is in contact with the outer side surface of the cylinder 1, and the outer side end surface of the cushion plate 5 is in contact with the inner side surface of the wheel belt 6. Both ends of the cushion plate 5 respectively extend to the outside of both sides of the wheel belt 6.
[0032] The upper side strip group includes the first strip 2, the second strip 4 and the first block 3.
[0033] The first strip 2 is a right triangle plate structure, the first right angle edge of the first strip 2 is fixedly connected with the second strip 4, and the second right angle edge of the first strip 2 is provided with a stress slot at one end close to the plane of the first right angle edge to eliminate stress.
[0034] The second strip 4 is a T-shaped plate structure, including a horizontal section and a vertical section, and the horizontal section and the vertical section are perpendicular to each other.
[0035] The first right angle edge of the first strip 2 is fixedly connected with the outer side of the vertical section of the second strip 4, and the lower end of the plane of the first right angle edge of the first strip 2 is flush with the lower end of the vertical section of the second strip 4. The plane of the first strip 2 is perpendicular to the plane of the second strip 4.
[0036] The first strip 2 and the vertical section of the second strip 4 are arranged between two adjacent cushion plates 5, the horizontal section and the vertical section of the second strip 4 are in contact with the belt 6, the plane of the second right angle edge of the first strip 2 is welded with the outer side of the cylinder 1, and the two ends of the horizontal section of the second strip 4 are located outside the two cushion plates 5.
[0037] The first block 3 is a cubic structure, two first blocks 3 are welded on the two cushion plates 5, and the two first blocks 3 are located on the side of the second strip 4 away from the belt 6. The two first blocks 3 and the horizontal section of the second strip 4 keep a gap.
[0038] The lower side strip group includes a third strip 9, a fourth strip 7 and a second block 8.
[0039] The third strip 9 is a right triangle plate structure, the first right angle edge of the third strip 9 is fixedly connected with the fourth strip 7, and the second right angle edge of the third strip 9 is provided with a stress slot at one end close to the plane of the first right angle edge to eliminate stress.
[0040] The fourth strip 7 is a T-shaped plate structure, including a horizontal section and a vertical section, and the horizontal section and the vertical section are perpendicular to each other.
[0041] The first right angle edge of the third strip 9 is fixedly connected with the outer side of the vertical section of the fourth strip 7, and the lower end of the plane of the first right angle edge of the third strip 9 is flush with the lower end of the vertical section of the fourth strip 7. The plane of the third strip 9 is perpendicular to the plane of the fourth strip 7.
[0042] The longitudinal section of the third and fourth strips 9 and 7 is arranged in the clamping groove of the corresponding pad 5, and the transverse section and longitudinal section of the fourth strip 7 are in contact with the belt 6, and the plane where the second straight edge of the third strip 9 is located is welded with the outer side of the cylinder 1. The transverse section of the fourth strip 7 is located at the outer side of the two pads 5.
[0043] The second block 8 is a cubic structure, two second blocks 8 are welded on the two pads 5 respectively, and the two second blocks 8 are located on the side of the fourth strip 7 away from the belt 6. There is a gap between the two second blocks 8 and the transverse section of the fourth strip 7.
[0044] The cylinder 1 is rolled from special steel plates, and the inside is inlaid with refractory bricks, and when rotating, the material carried exchanges heat. When installing the cylinder 1, a certain slope (3.5%-4%) is required, so when the cylinder 1 rotates, it will have a downward displacement. When it reaches the lowermost end, the hydraulic stop wheel will push the belt 6, and there is a friction force between the belt 6 and the pad 5, which will displace the cylinder 1 upward. When it reaches the uppermost end, the hydraulic stop wheel stops working, and the cylinder 1 will be displaced downward due to rotation and gravity, and the cycle continues.
[0045] The belt 6 is an integral cast steel, which is used to carry the cylinder 1 and all the loads inside it. According to the concentric principle, the belt 6 also has a slope of 3.5%-4% after installation. When it is in operation, the belt 6 will bear the following forces: ① the bearing force of the cylinder 1 and all the loads inside it; ② the centrifugal force of the cylinder 1 acting on the pad 5 and the friction force of the pad 5 acting on the belt 6; ③ the pushing force of the hydraulic stop wheel on the belt 6, and the counterforce of the belt 6 displacing the cylinder 1 and all the loads inside it upward and downward; ④ the thermal stress which is very large. Therefore, the belt 6 is processed into a live sleeve structure, which uses the gap with the pad 5 to buffer the action force and counterforce, uses the gap with the upper and lower strip groups to buffer the action force and counterforce when the cylinder 1 displaces upward and downward, and uses the upper and lower strip groups to fix and space the pads 5 to form a heat sink, thereby eliminating thermal stress.
[0046] The pad 5 is an integral casting, and its thickness is about times that of the traditional pad 5. It is a hollow structure, which serves as a heat sink and can eliminate stress concentration. The clamping groove at the end of the pad 5 is mainly used for positioning with the lower strip group. In addition, under certain conditions, the capacity of the rotary kiln can be upgraded by replacing the cylinder 1 with a larger diameter without replacing the belt 6 and the supporting wheel, thereby saving costs.
[0047] The first and second strips 2 and 4 of the upper strip group are mainly used to space the two adjacent pads 5. The gap between the first block 3 and the transverse section of the second strip 4 is used to buffer the friction force between the pad 5 and the belt 6, preventing the pad 5 from moving up and down.
[0048] The third stop 9 and the fourth stop 7 of the lower stop group are mainly used for fixing the backing plate 5, which can not only prevent the backing plate 5 from moving downward, but also prevent the backing plate 5 from sliding along the cylinder 1. The gap between the second stop block 8 and the transverse section of the fourth stop 7 is used to buffer the friction between the backing plate 5 and the wheel belt 6, so as to prevent the backing plate 5 from moving up and down.
[0049] The upper stop group and the lower stop group are installed in a staggered manner, and the purpose is that if the combination of the first stop 2 and the second stop 4 on one side or the combination of the third stop 9 and the fourth stop 7 on the other side is broken or falls under the action of the breaking force, the backing plate 5 will not fall under the positioning action of the first stop block 3 and the second stop block 8, unless the first stop 2, the second stop 4, the first stop block 3 on one side or the third stop 9, the fourth stop 7, the second stop block 8 on the other side all fall, which can make the backing plate 5 fall out from between the cylinder 1 and the wheel belt 6.
[0050] In the utility model, only the upper stop group and the lower stop group are vulnerable parts, and the first stop 2, the second stop 4, the first stop block 3, the third stop 9, the fourth stop 7 and the second stop block 8 can be replaced according to the degree of wear during maintenance, which is safe, convenient and fast.
[0051] The rotary kiln is the main equipment for cement production. Raw meal powder enters the kiln cylinder 1 from the high end of the kiln tail cylinder 1 for calcination. The inclination and slow rotation of the cylinder 1 of the rotary kiln make the material produce a compound motion of turning along the circumferential direction and moving along the axial direction from the high end to the low end. The raw meal is subjected to processes such as decomposition, sintering and cooling in the kiln, and after the cement clinker is sintered, it is discharged from the low end of the kiln cylinder 1 and enters the grate cooler.
[0052] The cylinder 1 is the trunk of the rotary kiln, which is made of steel plates by rolling and welding. The kiln cylinder 1 is installed on a plurality of pairs of supporting rollers in an inclined manner. A plurality of circular wheel belts 6 are sleeved along the length direction of the kiln cylinder 1, which bear the weight of the kiln cylinder 1, the kiln lining and the material, and transmit the weight to the supporting device. The wheel belt 6 is installed in a loose sleeve, and together with the cylinder 1, the backing plate 5, the upper stop group and the lower stop group, forms a heat dissipation box, and each part can be adjusted according to the running state to obtain the best gap.
[0053] When the rotary kiln is running, the surface temperature of the cylinder 1 of the rotary kiln can reach 250-300℃. This part of heat is transmitted to the wheel belt 6 through the backing plate 5 fixed on the cylinder 1 by the upper stop group and the lower stop group. The backing plate 5 is designed as a hollow structure and can dissipate heat, so the heat transmitted to the wheel belt 6 is reduced, and the thermal stress of the wheel belt 6 due to the temperature difference between the inside and the outside is greatly reduced.
[0054] The upper side baffle group and the lower side baffle group are installed with a certain angle, and the purpose of the staggered installation is to prevent the baffle on one side from being damaged, and the baffle on the other side can prevent the base plate 5 from falling out from the middle of the wheel belt 6.
[0055] Among them, only the baffle of the baffle group is a consumable part, which can be replaced according to the wear condition during maintenance, and the replacement is simple and convenient.
[0056] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and range of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.
Claims
1. A positioning device for a rotary kiln wheel belt, characterized by: Includes a cylindrical body (1), which is a circular cylindrical structure. A circular tire (6) is fitted on the outside of the cylindrical body (1). A ring of circular array pads (5) is arranged between the outer side of the cylindrical body (1) and the tire (6). An upper side baffle group is arranged between one end of any two adjacent pads (5), and a lower side baffle group is arranged in the middle of the other end of each pad (5). The upper side baffle group and the lower side baffle group are staggered.
2. A positioning device for a rotary kiln wheel belt as defined in claim 1, characterized in that: The pad (5) is a square cylindrical structure with both ends open. A square snap-fit groove is provided in the middle of one end of the pad (5) where the lower side strip assembly is provided. A row of openings is provided on the inner end face of the pad (5). The inner end face of the pad (5) is in contact with the outer side of the cylinder (1), and the outer end face of the pad (5) is in contact with the inner side of the tire (6). Both ends of the pad (5) extend to the outside of the two sides of the tire (6).
3. A positioning device for a rotary kiln wheel belt as defined in claim 2, characterized in that: The upper side baffle assembly includes a first baffle (2), a second baffle (4), and a first baffle (3); the first baffle (2) is a right-angled triangular plate structure, the plane containing the first right-angled side of the first baffle (2) is fixedly connected to the second baffle (4), and a stress groove is provided at one end of the plane containing the second right-angled side of the first baffle (2) near the plane containing the first right-angled side; the second baffle (4) is a T-shaped plate structure, including a transverse section and a longitudinal section, the transverse section and the longitudinal section are perpendicular to each other, and one end of the longitudinal section is fixedly connected to the middle of the transverse section.
4. A positioning device for a rotary kiln wheel belt as defined in claim 3, characterized in that: The plane containing the first right-angled side of the first strip (2) is fixedly connected to the outer side of the longitudinal section of the second strip (4), and the lower end of the plane containing the first right-angled side of the first strip (2) is flush with the lower end of the longitudinal section of the second strip (4); the plane containing the first strip (2) is perpendicular to the plane containing the second strip (4).
5. A positioning device for a rotary kiln wheel belt as defined in claim 4, characterized in that: The longitudinal sections of the first baffle (2) and the second baffle (4) are located between two adjacent pads (5), and the transverse and longitudinal sections of the second baffle (4) are in contact with the tire (6). The plane of the second right-angled side of the first baffle (2) is welded to the outer side of the cylinder (1); the two ends of the transverse section of the second baffle (4) are located on the outer side of the two pads (5).
6. A positioning device for a rotary kiln wheel belt as defined in claim 5, characterized in that: The first stop (3) is a cubic structure. The two first stop (3) are welded to the two pads (5) respectively, and the two first stop (3) are located on the side of the second stop (4) away from the tire (6); a gap is maintained between the two first stop (3) and the transverse section of the second stop (4).
7. A positioning device for a rotary kiln wheel belt as defined in claim 2, wherein: The lower side strip group comprises a third strip (9), a fourth strip (7) and a second block (8); the third strip (9) is a plate structure of right triangle, the plane where the first right angle side of the third strip (9) is fixedly connected with the fourth strip (7), and the plane where the second right angle side of the third strip (9) is provided with a stress slot at one end close to the plane where the first right angle side is located; the fourth strip (7) is a T-shaped plate structure, comprising a horizontal section and a vertical section, the horizontal section and the vertical section are perpendicular to each other, and one end of the vertical section is fixedly connected with the middle part of the horizontal section.
8. A positioning device for a rotary kiln wheel belt as defined in claim 7, characterized in that: The plane where the first right angle side of the third strip (9) is fixedly connected with the outer side of the vertical section of the fourth strip (7), and the lower end of the plane where the first right angle side of the third strip (9) is flush with the lower end of the vertical section of the fourth strip (7); the plane where the third strip (9) is perpendicular to the plane where the fourth strip (7) is located.
9. A positioning device for a rotary kiln wheel belt as defined in claim 8, characterized in that: The vertical section of the fourth strip (7) is arranged in the clamping groove at one end of the corresponding pad (5), and the horizontal section and the vertical section of the fourth strip (7) are in contact with the wheel belt (6), the plane where the second right angle side of the third strip (9) is welded with the outer side of the cylinder (1); the two ends of the horizontal section of the fourth strip (7) are located outside the two pads (5) respectively.
10. A positioning device for a rotary kiln wheel belt as defined in claim 9, characterized in that: The second block (8) is a cubic structure, two second blocks (8) are welded on the two pads (5) respectively, and the two second blocks (8) are located on the side, away from the wheel belt (6), of the fourth strip (7); the gap is kept between the two second blocks (8) and the horizontal section of the fourth strip (7).