Spring vibration reduction pull rod of coal mill
By designing the detachable piston inner cylinder and piston, the problem of high replacement cost of the coal mill spring vibration-absorbing pull rod is solved, achieving the effect of low replacement cost and extended service life.
Patent Information
- Application Number
- CN202420059699.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-01-10
AI Technical Summary
The existing coal mill spring vibration-absorbing lever requires a complete replacement during replacement, resulting in high costs.
A detachable coal mill spring vibration-absorbing tie rod is designed, including a detachable piston inner cylinder and piston. It only needs to replace the worn piston inner cylinder and piston to avoid the replacement of the entire tie rod.
The design of the removable piston inner cylinder and piston reduces replacement costs, simplifies disassembly and extends service life.
Smart Images
Figure CN222479310U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of spring vibration-damping pull rods, in particular to a spring vibration-damping pull rod of a coal mill. Background Art
[0002] Spring damping rod is a commonly used elastic component, widely used in various vibration equipment, with good stability, low noise, good vibration isolation effect, long service life and other advantages. Coal mill is a machine that breaks coal blocks and grinds them into coal powder. It is an important auxiliary equipment for pulverized coal furnace.
[0003] The existing spring damping tie rod of the coal mill will always be in a working state during use. Due to the large vibration of the coal mill, the spring damping tie rod needs a large stroke to buffer the vibration force, which makes the tie rod piston in the spring damping tie rod always in piston-like motion, accelerating the wear of the piston and the inner wall of the spring damping tie rod, thereby reducing the service life of the tie rod. When replacing, the entire tie rod needs to be replaced, which is costly.
[0004] Therefore, a spring damping tie rod for a coal mill is proposed. Utility Model Content
[0005] The utility model provides a spring vibration-damping pull rod of a coal mill, aiming to solve the problem that the existing spring vibration-damping pull rod of the coal mill needs to be replaced with a high total replacement cost.
[0006] The utility model is implemented as follows: a spring damping pull rod of a coal mill comprises: a piston outer cylinder; an inner cavity is opened at the top of the piston outer cylinder; a slide groove is opened on the inner side wall of the inner cavity; a piston inner cylinder is arranged inside the inner cavity; a slider is arranged on the outer side wall of the piston inner cylinder; a cylinder cover is arranged at a position above the piston outer cylinder; a piston is arranged inside the piston inner cylinder; a first connecting plate is arranged at the top of the piston; a second connecting plate is arranged at the top of the first connecting plate; a damping rod is arranged at the central position of the top of the second connecting plate; a pressure ring is arranged on the outer side wall of the damping rod; and a spring is arranged between the pressure ring and the cylinder cover.
[0007] Preferably, the sliding block is located inside the sliding groove, and the sliding block and the sliding groove are slidably connected.
[0008] Preferably, the inner wall of the inner cavity and the outer wall of the piston inner cylinder match and fit together.
[0009] Preferably, the piston performs piston-like motion inside the piston inner cylinder.
[0010] Preferably, a through hole is opened on the top of the cylinder cover, and the vibration damping rod passes through the through hole on the cylinder cover.
[0011] Preferably, the cylinder cover and the piston outer cylinder and the first connecting plate and the second connecting plate are fixedly connected by nuts.
[0012] Preferably, the damping rod passes through the spring.
[0013] Compared with the prior art, the embodiments of the present application have the following beneficial effects:
[0014] Through the detachable piston inner cylinder and piston, the internal components of the coal mill spring damping rod can be replaced after being worn out due to long-term work. Only the worn piston inner cylinder and piston need to be replaced, and there is no need to replace the entire spring damping rod. The cost is low. The piston inner cylinder is slid into the piston outer cylinder and covered with a cylinder cover to limit the position, making the disassembly and assembly of the piston inner cylinder and the piston simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is an exploded view of the utility model;
[0016] Figure 2 It is a structural schematic diagram of the utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the piston outer cylinder of the utility model;
[0018] Figure 4 It is a schematic diagram of the structure of the vibration reduction rod of the utility model.
[0019] In the figure: 1. piston outer cylinder; 2. inner cavity; 3. slide groove; 4. piston inner cylinder; 5. slider; 6. cylinder cover; 7. piston; 8. first connecting plate; 9. second connecting plate; 10. damping rod; 11. pressure ring; 12. spring. DETAILED DESCRIPTION
[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.
[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0022] The utility model embodiment provides a spring damping pull rod of a coal mill, such as Figure 1-4 As shown, it includes a piston outer cylinder 1, an inner cavity 2 is opened at the top center position of the piston outer cylinder 1, a slide groove 3 is opened on the inner wall of one side of the inner cavity 2, and a piston inner cylinder 4 is embedded in the inner cavity 2. The inner wall of the inner cavity 2 and the outer wall of the piston inner cylinder 4 match and fit together, which can ensure that the piston inner cylinder 4 is perfectly embedded in the inner cavity 2 and prevent the piston inner cylinder 4 from shaking inside the inner cavity 2. A slider 5 is provided on the outer wall of one side of the piston inner cylinder 4 at the inner side position close to the slide groove 3. The slider 5 is located inside the slide groove 3, and the slider 5 and the slide groove 3 are slidably connected to facilitate the piston inner cylinder 4 is disassembled and assembled, the top of the piston outer cylinder 1 is fixedly connected with the cylinder cover 6 through a nut, the piston 7 is embedded in the piston inner cylinder 4, the piston 7 performs piston-like movement inside the piston inner cylinder 4 to ensure the sealing of the piston 7 moving inside the piston inner cylinder 4, a first connecting plate 8 is arranged at the central position of the top of the piston 7, the top of the first connecting plate 8 is fixedly connected with the second connecting plate 9 through a nut, a damping rod 10 is arranged at the central position of the top of the second connecting plate 9, a pressure ring 11 is arranged on the outer wall of one side of the damping rod 10, and a spring 12 is arranged between the pressure ring 11 and the cylinder cover 6.
[0023] It should be noted that, since the existing spring damping rod of the coal mill needs to be replaced as a whole when it is replaced, which is costly, the present embodiment uses a detachable piston inner tube 4 and piston 7, so that when the spring damping rod of the coal mill is worn out after long-term operation, the internal components can be replaced. Only the worn piston inner tube 4 and piston 7 need to be replaced, and there is no need to replace the entire spring damping rod, which is cost-effective. The piston inner tube 4 is slidably inserted into the piston outer tube 1 and covered and limited by the tube cover 6, so that the disassembly and assembly of the piston inner tube 4 and the piston 7 are simple and convenient.
[0024] Specifically, in this embodiment, this scheme mainly includes a piston inner tube 4 and a piston 7. During assembly, the piston inner tube 4 is aligned and inserted into the inner cavity 2 on the piston outer tube 1 through the sliding connection between the slider 5 and the slide groove 3, and the slider 5 is inserted into the slide groove 3. When the piston inner tube 4 is fully inserted into the inner cavity 2, the top of the piston inner tube 4 and the top of the piston outer tube 1 are at the same height. At this time, the cylinder cover 6 is covered on the top of the piston outer tube 1, and is fastened and fixed by the piston outer tube 1 and the cylinder cover 6, and the bottom of the piston outer tube 1 is installed and fixed on the coal mill. The vibration reduction rod 10 is mounted on the base and fixed on the vibration end of the coal mill. When the vibration force is transmitted to the vibration reduction rod 10, the vibration reduction rod 10 drives the piston 7 to move like a piston inside the piston inner tube 4. The spring 12 between the pressure ring 11 and the cylinder cover 6 is compressed. The vibration force is buffered by the deformation of the spring 12 to achieve the effect of vibration reduction. When the piston inner tube 4 and the piston 7 are worn after long-term work, the cylinder cover 6 is removed, and the first connecting plate 8 and the second connecting plate 9 are removed and separated, and the new piston inner tube 4 and piston 7 can be replaced.
[0025] In a further preferred embodiment of the present invention, Figure 1-2 As shown, a through hole is opened on the top of the cylinder cover 6, and the vibration-damping rod 10 passes through the through hole on the cylinder cover 6; the vibration-damping rod 10 passes through the spring 12.
[0026] In this embodiment, the vibration damping rod 10 passes through the cylinder cover 6 so that the piston 7 at one end of the vibration damping rod 10 can move inside the piston inner cylinder 4 and buffer the vibration force through the deformation of the spring 12 .
[0027] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.
[0028] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.
[0029] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
[0030] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.
Claims
1. A spring damping pull rod for a coal mill, characterized in that: include: Piston outer cylinder (1); An inner cavity (2) is provided at the top of the piston outer cylinder (1); A slide groove (3) formed on the inner wall of the inner cavity (2); A piston inner cylinder (4) disposed inside the inner cavity (2); A sliding block (5) provided on the outer wall of the piston inner cylinder (4); A cylinder cover (6) disposed above the piston outer cylinder (1); A piston (7) disposed inside the piston inner tube (4); A first connecting plate (8) provided on the top of the piston (7); A second connection plate (9) disposed on top of the first connection plate (8); A vibration damping rod (10) disposed at the center of the top of the second connecting plate (9); A pressure ring (11) provided on the outer side wall of the vibration damping rod (10); A spring (12) is provided between the pressure ring (11) and the cylinder cover (6).
2. A spring damping pull rod for a coal mill as claimed in claim 1, characterized in that: The sliding block (5) is located inside the sliding groove (3), and the sliding block (5) and the sliding groove (3) are slidably connected.
3. The spring damping pull rod of a coal mill according to claim 1, characterized in that: The inner wall of the inner cavity (2) and the outer wall of the piston inner cylinder (4) match and fit together.
4. A spring damping pull rod for a coal mill as claimed in claim 1, characterized in that: The piston (7) performs piston-like motion inside the piston inner cylinder (4).
5. The spring damping pull rod of a coal mill according to claim 1, characterized in that: A through hole is provided on the top of the cylinder cover (6), and the vibration damping rod (10) passes through the through hole on the cylinder cover (6).
6. The spring damping pull rod of a coal mill according to claim 1, characterized in that: The cylinder cover (6) and the piston outer cylinder (1) as well as the first connecting plate (8) and the second connecting plate (9) are fixedly connected via nuts.
7. The spring damping pull rod of a coal mill according to claim 1, characterized in that: The vibration damping rod (10) passes through the spring (12).