Single-point shaking mechanism for breast roll of paper machine
By employing vibration isolation design in the paper machine and utilizing a combination of eccentric weights and hydrostatic sliding guides, the problem of vibration energy dispersion is solved, and the concentrated transmission of vibration energy is achieved, thereby improving the stability and reliability of the paper machine.
Patent Information
- Application Number
- CN202422698012.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-06
AI Technical Summary
In traditional papermaking machines, the wire mesh and breast roll are fixedly connected, which causes vibration energy to be dispersed, affecting other parts of the entire papermaking machine.
The design employs vibration isolation, using a combination of eccentric weights and hydrostatic sliding guides to concentrate vibration energy on the breast roller, which is then supported by disc springs and lead-core rubber vibration isolation supports to prevent vibration from being transmitted to other components.
This system enables the concentrated transmission of vibration energy, avoiding its impact on other components of the paper machine and improving the reliability and stability of the vibration system.
Smart Images
Figure CN223535509U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of papermaking machine technology, specifically to a single-point rocking mechanism for the breast roll of a papermaking machine. Background Technology
[0002] The breast roll is an important component of a papermaking machine, primarily used in the forming and pressing processes of paper. The breast roll plays a crucial role in the papermaking process, helping to evenly press the wet pulp into paper, ensuring uniform paper thickness and density. By applying pressure, the breast roll removes excess water from the pulp, promoting paper drying.
[0003] During papermaking, the pulp on the wire needs to be vibrated to change its arrangement and ensure uniform forming. Currently, in traditional papermaking machines, the wire and breast roll are fixedly connected, and the vibrating box drives the wire and breast roll to vibrate together. This results in excessively dispersed vibration energy in the breast roll vibrating mechanism, which can easily affect other components of the papermaking machine. To address this issue, a single-point vibrating mechanism for the breast roll of a papermaking machine is proposed. Utility Model Content
[0004] To address the shortcomings of existing technologies, this application provides a single-point vibration mechanism for the breast roll of a paper machine, which has advantages such as employing vibration isolation design to ensure that vibration energy is concentrated on the breast roll and avoids impacting the entire paper machine.
[0005] To achieve the above objectives, this application provides the following technical solution: a single-point shaking mechanism for a paper machine breast roll, comprising a shaking device eccentric block support box and an eccentric block rotatably mounted on the shaking device eccentric block support box. A motor for controlling the rotation of the eccentric block is provided at the rear end of the shaking device eccentric block support box. Meanwhile, a breast roll is rotatably connected to the side of the shaking device eccentric block support box via a support system. A hydrostatic sliding guide rail is also provided at the bottom of the shaking device eccentric block support box. The hydrostatic sliding guide rail comprises a slider and a slide block. The bottom of the slide block of the hydrostatic sliding guide rail has a bottom groove, and the bottom groove has an installation groove for easy connection.
[0006] The bottom of the hydrostatic sliding guide rail is provided with a vibration isolation device, which includes an upper connecting plate, a middle plate, and a butterfly spring connected between the upper connecting plate and the middle plate, all embedded in the mounting groove.
[0007] Furthermore, a spherical hinge is provided between the shafts of the support system, and a spring plate with one end fixed to the support end is connected to both sides of the breast roller.
[0008] Furthermore, the eccentric blocks comprise two sets symmetrically distributed on the eccentric block support box of the vibrator.
[0009] Furthermore, a guide seat is fixedly installed on one side of the middle plate facing the upper connecting plate, and a guide rod fixedly connected to the upper connecting plate is slidably installed in the guide seat.
[0010] Furthermore, a tensile baffle is fixedly installed on the outside of the guide rod. The tensile baffle is annular, and the guide seat is cylindrical. The tensile baffle abuts against the inner top wall of the guide seat.
[0011] Furthermore, an annular flange is also fixedly installed on the outside of the guide rod.
[0012] Furthermore, a lead-core rubber vibration isolation bearing is fixedly installed at the bottom of the center plate, and a lower connecting plate is fixedly installed at the bottom of the lead-core rubber vibration isolation bearing.
[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0014] The single-point rocking mechanism of the breast roll of this papermaking machine uses two sets of eccentric blocks. By changing the phase angle of these two sets of eccentric blocks, the amplitude of the breast roll is changed. In addition to the rocking force in the direction of the breast roll axis, there are no other extra components. It is very reliable and has no additional impact force. At the same time, a vibration isolation device is set under the hydrostatic sliding guide rail. The vibration isolation device is supported by a disc spring connected between the upper connecting plate and the middle plate, and in conjunction with the lead-core rubber vibration isolation support. This concentrates the transmission of the overall vibration of the device and avoids the impact on the entire papermaking machine. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this application;
[0016] Figure 2 This is a bottom view of the hydrostatic sliding guide rail structure of this application;
[0017] Figure 3 This is a schematic diagram of the vibration isolation device in this application;
[0018] Figure 4 For this application Figure 3 A schematic diagram of the structure at point AA.
[0019] In the diagram: 1. Shaker counterweight support box; 2. Counterweight; 3. Static pressure sliding guide rail; 4. Breast roller; 5. Spring plate; 6. Spherical hinge; 7. Bottom groove; 8. Mounting groove; 9. Upper connecting plate; 10. Mid-position plate; 11. Butterfly spring; 12. Guide seat; 13. Guide rod; 14. Tensile baffle; 15. Annular flange; 16. Lead-core rubber vibration isolation bearing; 17. Lower connecting plate. Detailed Implementation
[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0021] Please see Figures 1 to 4 The single-point shaking mechanism of the breast roll of a paper machine in this embodiment includes a shaking device eccentric block support box 1 and an eccentric block 2 rotatably mounted on the shaking device eccentric block support box 1. The rear end of the shaking device eccentric block support box 1 is provided with a motor for controlling the rotation of the eccentric block 2. At the same time, the breast roll 4 is rotatably connected to the side of the shaking device eccentric block support box 1 through a support system.
[0022] In this embodiment, a ball joint 6 is provided between the shafts of the support system to adapt to different working conditions, and a spring plate 5 with one end fixed to the support end is connected to both sides of the breast roller 4.
[0023] It should be noted that the bottom of the eccentric block support box 1 of the vibrator is also provided with a hydrostatic sliding guide rail 3, which is used to guide the swing of the eccentric block support box 1 of the vibrator and maintain the stability of the vibration activity.
[0024] Specifically, the eccentric blocks 2 consist of two sets symmetrically distributed on the eccentric block support box 1 of the vibrator. In practice, the amplitude of the breast roll 4 is changed by altering the phase angle of these two sets of eccentric blocks 2. In addition to the shaking force in the axial direction of the breast roll 4, there are no other extra forces. The system is highly reliable and has no additional impact force, making it an ideal shaking system, especially suitable for high-speed paper machines.
[0025] With the coordinate system of the upper right eccentric block 2 as the reference, the calculation of the shaking force F of the two pairs of eccentric blocks 2 when the phase angle difference is θ is shown in the formula.
[0026] F=4mHrω2sin(θ2)sin(α+θ2)
[0027] In the formula, mH is the mass of a single eccentric block 2; r is the distance from the center of mass of eccentric block 2 to the center of the circle; ω is the angular velocity of eccentric block 2; θ is the phase angle difference between the two sets of eccentric blocks 2; α = ωt; t is time.
[0028] In this embodiment, the hydrostatic sliding guide rail 3 includes two parts: a slider and a slide block. The bottom of the slide block of the hydrostatic sliding guide rail 3 is provided with a bottom groove 7, and an installation groove 8 is provided in the bottom groove 7 to facilitate connection.
[0029] In this embodiment, the bottom of the hydrostatic sliding guide rail 3 is provided with a vibration isolation device located in the mounting groove 8. The vibration isolation device includes an upper connecting plate 9, a middle plate 10 embedded in the mounting groove 8, and a butterfly spring 11 connected between the upper connecting plate 9 and the middle plate 10.
[0030] It should be noted that a guide seat 12 is fixedly installed on the side of the middle plate 10 facing the upper connecting plate 9, and a guide rod 13 fixedly connected to the upper connecting plate 9 is slidably installed inside the guide seat 12.
[0031] During the vibration transmission process, the upper connecting plate 9 moves toward the middle plate 10, thereby causing the guide rod 13 to slide relative to the guide seat 12.
[0032] Furthermore, a tensile baffle 14 is fixedly installed on the outside of the guide rod 13. The tensile baffle 14 is annular, and the guide seat 12 is cylindrical. The tensile baffle 14 abuts against the inner top wall of the guide seat 12 to limit the movement limit position of the upper connecting plate 9 relative to the middle plate 10.
[0033] In order to reduce the sliding wear of the guide rod 13 relative to the guide seat 12, in this embodiment, an annular flange 15 is also fixedly installed on the outside of the guide rod 13.
[0034] In this embodiment, a lead-core rubber vibration isolation support 16 is fixedly installed at the bottom of the center plate 10, and a lower connecting plate 17 is fixedly installed at the bottom of the lead-core rubber vibration isolation support 16. The lower connecting plate 17 is used to fix it at the support position so that the hydrostatic sliding guide rail 3 is provided with vibration isolation support.
[0035] The working principle of the above embodiments is as follows:
[0036] The drive device, such as a motor, located at the rear of the vibrator eccentric block support box 1 drives the two sets of eccentric blocks 2 located at the front of the vibrator eccentric block support box 1 to rotate. The swing of the eccentric blocks 2 causes the vibrator eccentric block support box 1 to vibrate. The support system between the vibrator eccentric block support box 1 and the breast roll 4 drives the breast roll 4 to complete the vibration. During the vibration transmission process, the slider of the hydrostatic sliding guide rail 3 slides relative to the slide block. At this time, the hydrostatic sliding guide rail 3 achieves vibration isolation through the vibration isolation device between the slide block and the support surface. Specifically, the vibration is transmitted to the upper connecting plate 9, forcing the upper connecting plate 9 to move closer to the middle plate 10. At this time, the upper connecting plate 9 changes the vibration transmission direction by squeezing the butterfly spring 11, so that the vibration effect will not be transmitted through the lead core rubber vibration isolation support 16 to a large extent, ensuring that the vibration energy is concentrated on the breast roll 4 and avoiding the impact on the entire paper machine.
[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0038] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A single-point vibrating mechanism for a paper machine breast roll, comprising a vibrator eccentric block support box (1) and an eccentric block (2) rotatably mounted on the vibrator eccentric block support box (1), characterized in that: The rear end of the eccentric block support box (1) of the vibrator is provided with a motor for controlling the rotation of the eccentric block (2). At the same time, the side of the eccentric block support box (1) of the vibrator is rotatably connected to the breast roller (4) through the support system. The bottom of the eccentric block support box (1) of the vibrator is also provided with a hydrostatic sliding guide rail (3). The hydrostatic sliding guide rail (3) includes two parts: a slider and a slide block. The bottom of the slide block of the hydrostatic sliding guide rail (3) is provided with a bottom groove (7). The bottom groove (7) is provided with an installation groove (8) for easy connection. The bottom of the hydrostatic sliding guide rail (3) is provided with a vibration isolation device, which includes an upper connecting plate (9), a middle plate (10) embedded in the mounting groove (8), and a butterfly spring (11) connected between the upper connecting plate (9) and the middle plate (10).
2. The single-point rocking mechanism for the breast roll of a papermaking machine according to claim 1, characterized in that: A spherical hinge (6) is provided between the shafts of the support system, and a spring plate (5) with one end fixed to the support end is connected to both sides of the breast roller (4).
3. The single-point rocking mechanism for the breast roll of a papermaking machine according to claim 1, characterized in that: The eccentric blocks (2) consist of two sets symmetrically distributed on the eccentric block support box (1) of the vibrator.
4. The single-point rocking mechanism for the breast roll of a papermaking machine according to claim 1, characterized in that: A guide seat (12) is fixedly installed on the side of the middle plate (10) facing the upper connecting plate (9), and a guide rod (13) fixedly connected to the upper connecting plate (9) is slidably installed in the guide seat (12).
5. A single-point rocking mechanism for a paper machine breast roll according to claim 4, characterized in that: A tensile baffle (14) is also fixedly installed on the outside of the guide rod (13). The tensile baffle (14) is circular, and the guide seat (12) is cylindrical. The tensile baffle (14) abuts against the inner top wall of the guide seat (12).
6. The single-point rocking mechanism for the breast roll of a papermaking machine according to claim 5, characterized in that: An annular flange (15) is also fixedly installed on the outside of the guide rod (13).
7. The single-point rocking mechanism for the breast roll of a papermaking machine according to claim 1, characterized in that: A lead-core rubber vibration isolation support (16) is fixedly installed at the bottom of the center plate (10), and a lower connecting plate (17) is fixedly installed at the bottom of the lead-core rubber vibration isolation support (16).