Sintering machine trolley wheel bearing dismounting and mounting set
By designing the sintering machine trolley wheel bearing disassembly kit, the complex and time-consuming replacement process is solved, achieving more efficient maintenance and production efficiency.
Patent Information
- Application Number
- CN202420449750.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-07
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-03-07
AI Technical Summary
The replacement process of sintering machine trolley wheel bearings is complicated and time-consuming, which affects production efficiency.
A set of sintering machines, car wheel bearing disassembly sets, including wheel disassembly dedicated workflows, wheel bearing for disassembly specialized workflow, wheel bearing, dedicated workflow and locking nut, and tightly tightened special tools, simplifying the disassembly process.
It improved the efficiency of the wheel bearing replacement, shortened the maintenance time, reduced the risk of labor intensity and equipment damage, improved production efficiency and reduced costs.
Smart Images
Figure CN222386856U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical equipment, in particular to a sintering machine trolley wheel bearing disassembly and assembly set. Background Art
[0002] Taking the sintering of Xichang Steel and Vanadium Ironmaking Plant as an example, the sintering area of Xichang Ironmaking Plant is equipped with two sintering systems to produce sintered ore for three blast furnaces. Each sintering machine production system equipment is a single-line equipment. The sintering machine is an important equipment for producing sintered ore. Once the equipment fails, the entire production line will be shut down.
[0003] Two series 360m 2 The sintering machine system mainly consists of: 132 trolleys, head star wheel device, tail star wheel device, frame, head track, middle track, tail track, distributor, igniter, flexible transmission device, exhaust device, head and tail sealing device, tail moving device, large flue and ash discharge valve. Its working principle is: the main shaft of the sintering machine head star wheel is driven by a flexible device, the trolley moves continuously and uniformly along the predetermined track, the shuttle ore trough mixture is spread on the trolley through the round roller and eleven-roll distributor, and after ignition, the mixture is sintered by exhaust under the action of the main exhaust fan. The sintering process is carried out from top to bottom and continues until the end of sintering; the sintered ore enters the single roller crusher for thermal crushing. The wheel bearing of the sintering machine trolley is a double-row tapered roller bearing with a model of 352124; the wheel end cover bolt specification is M16×40.
[0004] According to the maintenance records since the project was put into operation in 2011, the most frequent and largest maintenance work is to open the cover to inspect, adjust and replace the wheel bearings of the sintering machine trolleys. Each series of sintering machines has 132 trolleys, each trolley has 4 wheels, and the two series of sintering machines have a total of 1,056 sets of wheel bearings. The trolley wheels are opened and inspected once every six months during equipment maintenance. Some wheels still fall off during operation. According to statistics, the average number of bearings replaced each year is about 500 sets. The replacement of trolley wheel bearings has become a key control item for each maintenance. On average, about 125 sets of bearings are replaced each time. Sometimes, in order to reduce the number of bearings replaced at a time, the equipment maintenance cycle is shortened and the number of equipment maintenance times per year is increased, which has caused great difficulties for production. Utility Model Content
[0005] The utility model provides a sintering machine trolley wheel bearing disassembly and assembly kit, which solves the problem that the existing replacement process is complicated and time-consuming and affects production.
[0006] Based on the actual situation of the on-site trolley wheel and bearing assembly, and in view of the technical points in the process of wheel bearing disassembly and assembly, a set of efficient and safe maintenance tooling was designed and manufactured to improve the disassembly and assembly of the sintering machine trolley wheel bearings and improve the operating efficiency.
[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0008] A sintering machine trolley wheel bearing disassembly and assembly kit, comprising a special tool for wheel disassembly, a special tool for wheel bearing disassembly, a special tool for wheel bearing reassembly, and a special tool combination for quick disassembly and tightening of wheel bearing locking nuts;
[0009] The wheel removal tool comprises a fixed baffle, both ends of which are provided with round tubes, screws are inserted into the round tubes, and a jack base baffle is welded on the upper surface of the fixed baffle;
[0010] The special tool for disassembling the wheel bearing comprises a disc, and a central welding bolt of the disc;
[0011] The wheel bearing reinstallation tool comprises a first steel pipe, one end of which is welded with a circular steel plate;
[0012] The special tool for quickly removing and tightening the wheel bearing locking nut comprises a special wrench for the locking nut.
[0013] Furthermore, the jack base baffle is vertically arranged to the fixed baffle.
[0014] Furthermore, the upper portion of the screw rod is fixedly connected to the fixed baffle via a nut.
[0015] Furthermore, the lower end of the circular steel plate is connected to a second steel pipe, and the other end of the second steel pipe is folded into a safety handle.
[0016] Furthermore, the diameter of the second steel pipe is smaller than the diameter of the first steel pipe.
[0017] Furthermore, the front end of the special wrench for locking nuts is a flat arc-shaped steel plate, and the rear end of the special wrench for locking nuts is a flat steel plate.
[0018] Furthermore, the radius of the arc of the special wrench for locking nut is the same as the radius of the locking nut.
[0019] The beneficial effects of the utility model are:
[0020] The utility model discloses a special tool for quickly disassembling and tightening the wheel bearing locking nut, namely, a special wrench for locking nut, so that the probability of damage to the locking nut locking groove is reduced and the working efficiency is improved; at the same time, the disassembly and assembly set is simple and convenient to disassemble and assemble, safe and applicable, reduces the working risk, is easy to operate, has low cost and improves the working efficiency; it has great economic benefits and good promotion value. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 This is the front view of the special tooling for wheel disassembly in the utility model.
[0023] Figure 2 It is a top view of the special tooling for wheel disassembly in the utility model.
[0024] Figure 3 This is a cross-sectional view of the special tooling for disassembling the wheel bearing in the utility model.
[0025] Figure 4 This is a cross-sectional view of the special tooling for disassembling the wheel bearing in the utility model.
[0026] Figure 5 This is a front view of the special tooling for reinstalling the wheel bearing in the utility model.
[0027] Figure 6 It is a top view of the special tooling for reinstalling the wheel bearing in the utility model.
[0028] Figure 7 It is a schematic diagram of a special tool for quickly removing and tightening a wheel bearing locking nut in the utility model.
[0029] Description of Figure Numbers:
[0030] 1. Fixed baffle; 2. Round tube; 3. Screw; 4. Nut; 5. Jack base baffle; 6. Disc; 7. Bolt; 8. First steel tube; 9. Round steel plate; 10. Second steel tube; 11. Special wrench for locking nut. DETAILED DESCRIPTION
[0031] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0034] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values do not limit the scope of the utility model. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0035] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present utility model: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0036] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0037] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.
[0038] The utility model provides a technical solution: a sintering machine trolley wheel bearing disassembly and assembly set, such as Figure 1-7 As shown in the figure, based on the bottleneck problem in the process of bearing replacement, disassembly and assembly, a sintering machine trolley wheel bearing replacement and disassembly set is designed and manufactured, which is composed of a special tool for trolley wheel disassembly, a special tool for wheel bearing disassembly, a special tool for wheel bearing reassembly, and a special tool for quick disassembly and tightening of wheel bearing locking nuts. The special tool for wheel disassembly is mainly used for quick disassembly of trolley wheels; including a special tool for quick disassembly of wheel bearings, which is mainly used for quick disassembly of trolley wheel bearings; a special tool for quick reassembly of wheel bearings, which is mainly used for quick reassembly and tightening of trolley wheel bearings; and a special tool for quick disassembly and tightening of wheel bearing locking nuts, which is mainly used for quick disassembly and reassembly of locking bearings of trolley wheel bearings.
[0039] The special tooling for wheel disassembly includes a fixed baffle 1, round tubes 2 are provided at both ends of the fixed baffle 1, screws 3 are inserted into the round tubes 2, and the top of the screw 3 is fixedly connected to the fixed baffle 1 through a nut 4. A jack base baffle 5 is welded on the upper surface of the fixed baffle 1, and the jack base baffle 5 is vertically arranged with the fixed baffle 1.
[0040] The special tool for disassembling the wheel bearing comprises a disc 6 and a central welding bolt 7 of the disc 6 .
[0041] The special tooling for reinstalling the wheel bearing includes a first steel pipe 8, a circular steel plate 9 is welded to one end of the first steel pipe 8, the lower end of the circular steel plate 9 is connected to a second steel pipe 10, and the other end of the second steel pipe 10 is folded into a safety handle; the diameter of the second steel pipe 10 is smaller than the diameter of the first steel pipe 8.
[0042] The special tool for quickly removing and tightening the wheel bearing locking nut includes a special wrench 11 for locking nut, the front end of which is a flat arc steel plate, and the rear end of which is a flat steel plate; the radius of the arc of the special wrench 11 is the same as the radius of the locking nut.
[0043] The specific method is as follows:
[0044] 1. Special tooling for disassembling trolley wheels: Use a 16T jack to pull the wheel together with the bearing from the wheel axle. Use 10mm thick steel plate and a pipe with an inner diameter of φ22 to weld a fixed baffle 1. Use two M16×300mm screws 3 and equip them with M16 nuts 4. The principle is to screw the welded long screw 3 into the thread hole of the wheel and use a jack to push out the wheel.
[0045] 2. Special tooling for quick removal of wheel bearings: After the wheel and bearing are removed, the bearing in the wheel hole must also be removed; use a 20mm thick steel plate to make a φ200 disc 6, and weld an M30×160 bolt 7 at the center of the disc 6. This tooling is simple and reliable, and the outer ring of the bearing is evenly stressed when struck.
[0046] 3. Special tooling for rapid reinstallation of wheel bearings: In order to improve the installation efficiency of wheel bearings, the bearing driving tooling is designed and manufactured with a first steel pipe 8 with an inner diameter of φ125 and a wall thickness of 8mm. After being cut into a length of 300mm, a 20mm thick round steel plate 9 is welded at one end as the striking end surface, and then a second steel pipe 10 is welded to form a safety handle. When reinstalling the wheel bearing, knocking on the cylindrical sleeve plays a role in safe positioning and protecting personnel.
[0047] 4. Special tools for quick disassembly and tightening of wheel bearing locking nuts: a special wrench 11 for disassembly and assembly of locking nuts is made to improve work efficiency; the locking nut is used as a model, and the size of the special wrench is marked on a steel plate with a thickness of 10 mm, and then the wrench is cut along the marked line with gas welding, and finally the burrs of the wrench are polished smooth.
[0048] Economic and social benefits:
[0049] 1. Achieve results
[0050] 1. After using the new wheel bearing disassembly and assembly kit, the time required to replace each set of wheel bearings has been increased from 3 people 1 hour / set to 3 people 0.5 hours / set, and the replacement and maintenance efficiency has been increased by 50%.
[0051] 2. The maintenance time is shortened, which wins more production time for production, reduces the labor intensity of maintenance personnel, and ensures the mental state of maintenance workers.
[0052] 3. Before the improvement, the wheel bearing was easily damaged due to uneven force, and the locking nut groove was easily damaged by curling. After the improvement, the bearing is evenly stressed when it is reinstalled, and the locking nut groove will not curl, eliminating the hidden danger of curling damage.
[0053] 4. Before the improvement, the complete cycle inspection and replacement of the wheel bearings of each sintering machine trolley required two shutdowns, each for 14 hours; after the improvement, all wheel cycle inspection, refueling and replacement processing items can be completed with only one shutdown of 14 hours.
[0054] 2. Economic Benefits
[0055] 1. Reduce the labor efficiency of equipment maintenance
[0056] Before improvement: It takes 3 people 1 hour to replace the wheel bearing of the sintering machine trolley
[0057] After improvement: It only takes 3 people 0.5 hours to replace the wheel bearing of the sintering machine trolley
[0058] The number of wheels replaced in each overhaul is about 125 sets. The maintenance labor cost is calculated based on the maintenance labor cost of Panzhihua Iron and Steel Group, which is 59.88 yuan per hour per person. Then:
[0059] The maintenance labor cost one year before the improvement was:
[0060] S1 = 3 people × 1 hour × 125 sets × 2 times / unit.year × 2 units × 59.88 yuan / hour = 89,800 yuan;
[0061] After the improvement, the maintenance labor cost for one year is:
[0062] S2 = 3 people × 0.5 hours × 125 sets × 2 times / unit.year × 2 units × 59.88 yuan / hour = 44,900 yuan;
[0063] The annual labor savings are:
[0064] S 人工 =S1-S2=89,800-44,900=44,900 yuan.
[0065] 2. Production efficiency
[0066] The benefits of reducing abnormal equipment downtime are as follows: after using the wheel bearing replacement and disassembly kit, a series of trolley wheel bearing maintenance and replacement projects can be completed in 14 hours each time of downtime for maintenance, which saves one 14-hour downtime for maintenance compared with the previous improvement. Two series of sintering can save 2 units × 2 times / unit × 14 hours / time = 56 hours of downtime per year, which means 56 hours of production time per year. The output of each series of sintering machines is 500 tons / hour. The use of sintered ore in the blast furnace saves 80 yuan / ton compared to the use of pelletized ore. The effective operating rate of the sintering machine is 96% throughout the year. The benefits of sintering throughout the year are as follows:
[0067] formula:
[0068] S 生产 =Be=Y1i*Ti*Ai*Gi*Ci-Bi
[0069] Be-benefit of process technology innovation, ten thousand yuan;
[0070] Y1i-reduction of downtime throughout the year after improvement, h;
[0071] Ti-sintered ore output per unit downtime, t / h;
[0072] Ai-sintered ore saves 80 yuan / t compared with pelletized ore;
[0073] Gi-process technology contribution coefficient, taken as 0.9;
[0074] Ci-effective operation rate 96%;
[0075] Bi-R&D investment, 10,000 yuan.
[0076] S 生产 =56×500×80×0.9×0.96-0.1=1.9344 million yuan;
[0077] Total annual revenue:
[0078] S=S 人工 +S 生产 =4.49+193.44=1.9793 million yuan.
[0079] 2. Social Benefits:
[0080] By designing and manufacturing special tooling for disassembling trolley wheels, special tooling for quick disassembly of wheel bearings, special tooling for quick reinstallation of wheel bearings, and special tools for quick disassembly and tightening of wheel bearing locking nuts, the following are integrated: First, the operation method is improved, the maintenance efficiency is improved, and the maintenance tasks of opening the cover of all trolley wheels for inspection, refueling, and replacement of wheel bearings are completed in one 14-hour scheduled maintenance under the existing manpower conditions, eliminating the situation where the replacement time of the sintering machine trolley wheel bearings is inconsistent due to the original two-time maintenance. Second, the dangerous operation methods of the past are eliminated, the personal safety of employees is guaranteed, and the safety risks of operators are reduced. Third, no gas welding is required during the bearing removal process, which effectively avoids the pollution caused by the burning of lubricating oil during the bearing replacement process. Fourth, the application of this integrated set of operations reduces the workload of maintenance personnel, greatly reduces the labor intensity of employees, ensures the mental state of operators, and lays the foundation for stable production in the sintering area.
[0081] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A sintering machine trolley wheel bearing disassembly and assembly kit, comprising a special tool for wheel disassembly, a special tool for wheel bearing disassembly, a special tool for wheel bearing reassembly, and a special tool combination for quick disassembly and tightening of wheel bearing locking nuts, characterized in that: The special tooling for wheel removal comprises a fixed baffle (1), round tubes (2) are arranged at both ends of the fixed baffle (1), screws (3) are inserted into the round tubes (2), and a jack base baffle (5) is welded to the upper surface of the fixed baffle (1); The special tool for disassembling the wheel bearing comprises a disc (6) and a central welding bolt (7) of the disc (6); The special tooling for wheel bearing reinstallation comprises a first steel pipe (8), one end of which is welded with a circular steel plate (9); The special tool for quickly removing and tightening the wheel bearing locking nut comprises a special wrench (11) for the locking nut.
2. The sintering machine trolley wheel bearing disassembly and assembly kit according to claim 1, characterized in that: The jack base baffle (5) is arranged vertically to the fixed baffle (1).
3. The sintering machine trolley wheel bearing disassembly and assembly kit according to claim 1, characterized in that: The upper portion of the screw rod (3) is fixedly connected to the fixed baffle (1) via a nut (4).
4. The sintering machine trolley wheel bearing disassembly and assembly kit according to claim 1, characterized in that: The lower end of the circular steel plate (9) is connected to a second steel pipe (10), and the other end of the second steel pipe (10) is folded into a safety handle.
5. The sintering machine trolley wheel bearing disassembly and assembly kit according to claim 4, characterized in that: The diameter of the second steel pipe (10) is smaller than the diameter of the first steel pipe (8).
6. The sintering machine trolley wheel bearing disassembly and assembly kit according to claim 1, characterized in that: The front end of the special wrench for locking nuts (11) is a flat arc-shaped steel plate, and the rear end of the special wrench for locking nuts (11) is a flat steel plate.
7. The sintering machine trolley wheel bearing disassembly and assembly kit according to claim 6, characterized in that: The radius of the circular arc of the special wrench (11) for locking nut is the same as the radius of the locking nut.