Vibration reduction foundation of screw press
By introducing anti-torsional buffer and counter-pressure devices into the basic structure of the screw press, the problems of loose anchor bolts and foundation block damage caused by rotational inertia force were solved, thus achieving safe and reliable operation and long service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO CREATE ENVIRONMENT CONTROL TECH
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-24
AI Technical Summary
The existing foundation structure of the screw press is prone to loosening or shearing of anchor bolts and damage to foundation blocks when counteracting rotational inertia, affecting the normal use of the equipment.
The device employs an anti-torsion buffer and a counter-pressure device, including a limit baffle, an anti-torsion elastic buffer component, a counter-pressure plate, and anchor bolts, which allows the press base to move relative to the base block and the counter-pressure plate. The anti-torsion buffer buffer buffers the rotational inertial force and avoids direct impact contact.
It effectively prevents anchor bolts from loosening or shearing, protects the foundation block, extends equipment lifespan, reduces failure rate, minimizes vibration interference, and improves equipment utilization and processing accuracy.
Smart Images
Figure CN224158950U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of vibration control technology, and relates to a basic structure of a screw press, especially an impact-resistant foundation for a screw press. Background Technology
[0002] Screw presses include friction screw presses and electric direct-drive screw presses. Friction screw presses are friction-driven screw presses, widely used in stamping, forging, and die-forging workshops in industries such as machinery manufacturing, automobiles, tractors, and aviation due to their wide range of applications, simple structure, easy installation, operation, and auxiliary equipment, and low price. In addition, friction screw presses are also used in building materials machinery, widely used for dry pressing of ceramic tiles, clay, and refractory products. However, during operation, these screw presses rely on a flywheel to drive the screw to generate screw pressure. After the slide presses against the workpiece, the remaining kinetic energy of the flywheel causes the base and foundation block of the friction press to twist due to rotational inertia. Electric screw presses also exhibit torsion due to the rotational inertia of the motor rotor and screw. To counteract this rotational inertial force, steel baffles are currently installed around the foundation block and base when constructing the foundation of a friction press. These steel baffles bear the rotational inertia. However, this rigid-to-rigid, hard-on-hard protection mode has significant drawbacks. For example, it can cause the anchor bolts that connect the base and the foundation block to loosen or be sheared frequently. In severe cases, it can even damage the foundation block, leading to frequent downtime for maintenance and affecting the normal use of the equipment.
[0003] In conclusion, the market urgently needs a safer and more durable base structure for friction presses. Utility Model Content
[0004] The purpose of this invention is to overcome the above-mentioned defects and provide a safer and more durable vibration-damping foundation for a screw press.
[0005] The vibration-damping foundation of this screw press is implemented as follows: it includes a foundation and a foundation block, with the foundation block embedded in the foundation. It also includes an anti-torsional buffer device and a counter-pressure device. The anti-torsional buffer device includes a limiting baffle and an anti-torsional elastic buffer component, which is positioned between the side of the press base and the limiting baffle. The limiting baffle is fixedly integrated with the foundation block. The counter-pressure device includes a counter-pressure plate and anchor bolts. The lower part of the anchor bolts is fixedly positioned in the foundation block. The counter-pressure plate is placed on top of the press base and the anti-torsional elastic buffer component, with its outer end face pressing against the limiting baffle and being horizontally limited. The counter-pressure plate has mounting through holes corresponding to the anchor bolts, and the press base has assembly through holes corresponding to the anchor bolts. A horizontal buffer gap is left between the assembly through holes and the anchor bolts. The anchor bolts sequentially engage with the assembly through holes and mounting through holes from bottom to top, fixing the press base and counter-pressure plate to the foundation block.
[0006] Furthermore, the vibration damping foundation of the screw press of this utility model also includes a wear-resistant layer, which is disposed between the press base and the foundation block, and / or between the counter-pressure plate and the press base, and the wear-resistant layer is provided with clearance through holes corresponding to the anchor bolts.
[0007] The vibration-damping foundation of the screw press of this utility model may also include a vertical buffer protection device. The specific form of the vertical buffer protection device is varied. For example, the vertical buffer protection device includes a vertical buffer elastic element, or a combination of a vertical buffer elastic element and a damper. The vertical buffer elastic element is located between the press base and the foundation block. The vertical buffer elastic element is at least one of a helical spring, disc spring, leaf spring, rubber elastic pad, metal-rubber composite spring, or polyurethane elastic pad. The damper is at least one of a viscous damper, eddy current damper, orifice throttling damper, elastic rubber damper, or elastic polyurethane damper. Furthermore, the vertical buffer protection device may also include a pressure equalizing plate, which is disposed between the vertical buffer elastic element and the press base or / and between the vertical buffer elastic element and the foundation block. The pressure equalizing plate has clearance through holes corresponding to the anchor bolts. For technical solutions that simultaneously provide a vertical buffer protection device and a wear-resistant layer, the wear-resistant layer is disposed between the press base and the vertical buffer elastic device or / and between the vertical buffer elastic device and the foundation block.
[0008] It should be noted that the wear-resistant layer described in this utility model can take many different forms. Typically, the wear-resistant layer is composed of a wear-resistant plate, a steel plate, or a steel plate with a wear-resistant functional layer on its surface. The wear-resistant plate includes a copper plate, a tetrafluoroethylene plate, a nylon plate, or a powder metallurgy plate, and the wear-resistant functional layer includes a tetrafluoroethylene layer, a powder metallurgy layer, or a copper-plated layer.
[0009] The anti-torsional elastic buffer component in this utility model has various specific forms. For example, the anti-torsional elastic buffer component includes a horizontal elastic element or a combination of a horizontal elastic element and a damper. The horizontal elastic element is at least one of a helical spring, disc spring, leaf spring, rubber elastic pad, metal-rubber composite spring, or polyurethane elastic pad. The damper is at least one of a viscous damper, eddy current damper, orifice throttling damper, elastic rubber damper, or elastic polyurethane damper.
[0010] To ensure uniform stress distribution and improve service life, the anti-torsional elastic buffer component may further include a protective pressure equalizing plate. The anti-torsional elastic buffer component contacts and engages with the press base through the protective pressure equalizing plate, or / and the anti-torsional elastic buffer component contacts and engages with the limiting baffle through the protective pressure equalizing plate. Additionally, if necessary, a gap filling layer may be provided between the protective pressure equalizing plate and the press base, or / and between the protective pressure equalizing plate and the limiting baffle.
[0011] In this invention, the anti-torsional elastic buffer component is disposed around the base of the press, or the anti-torsional elastic buffer component is disposed at at least two corresponding corners along the diagonal direction of the press base.
[0012] Furthermore, a counterweight can be added to the vibration-damping foundation of the screw press of this utility model. The counterweight is located below the press base and is fixedly connected to the press base. A clearance through-hole is provided on the counterweight corresponding to the anchor bolts. An anti-torsional elastic buffer component is disposed between the side of the press base and the limiting baffle, and between the side of the counterweight and the limiting baffle. Preferably, the counterweight is made of steel plate or concrete, or a combination of steel plate and concrete.
[0013] This utility model's vibration-damping foundation for a screw press allows relative movement between the press base and the foundation block and counter-pressure plate by incorporating a counter-pressure device and an anti-torsional buffer device. The anti-torsional buffer device cushions the rotational inertia force during operation, preventing impact contact between the press base and the limit baffle. This effectively prevents anchor bolts from loosening or shearing and protects the foundation block from damage, significantly extending the service life of the foundation structure and ensuring better equipment operation. Simultaneously, the counter-pressure device provides vertical limitation and horizontal torsion guidance for the press base, effectively restricting its rotation and further protecting it. The anchor bolts and foundation block remain undamaged, ensuring greater safety and reliability. Furthermore, it reduces the vibration level of the foundation block and the vibration propagation to surrounding areas, preventing vibration interference. In particular, the simultaneous installation of a vertical buffer protection device effectively buffers the vertical inertial force between the press base and the foundation block, preventing foundation block damage. This significantly reduces equipment swaying and prevents the vertical inertial force from being reflected back to the press base when the press base and foundation block are in direct hard contact, thus effectively protecting the equipment and its accessories from impact damage. It also reduces the vibration level of the foundation block and the vibration propagation to surrounding areas, preventing vibration interference. As the above analysis shows, by installing a counter-pressure device, an anti-torsion buffer device, and a vertical buffer protection device, it is possible to effectively reduce equipment failure rate and maintenance time, significantly improving equipment utilization and economic benefits.
[0014] In summary, the vibration-damping foundation of this utility model for a screw press has a simple structure and a long service life. It can optimize the stress during the operation of the equipment, avoid damage to the equipment, and thus effectively improve the utilization rate and processing accuracy of the equipment, which is conducive to improving economic benefits. It can be applied to the foundation vibration control of various friction screw presses and electric direct-drive screw presses, and has a very broad application prospect. Attached Figure Description
[0015] Figure 1This is one of the structural schematic diagrams of the vibration reduction foundation for the screw press of this utility model.
[0016] Figure 2 for Figure 1 One of the AA sectional views.
[0017] Figure 3 for Figure 1 AA sectional view, part two.
[0018] Figure 4 This is the second schematic diagram of the vibration damping foundation for the screw press of this utility model.
[0019] Figure 5 This is the third schematic diagram of the vibration damping foundation for the screw press of this utility model.
[0020] Figure 6 This is the fourth structural schematic diagram of the vibration reduction foundation for the screw press of this utility model.
[0021] Figure 7 This is the fifth schematic diagram of the vibration damping foundation for the screw press of this utility model.
[0022] Figure 8 This is the sixth schematic diagram of the vibration damping foundation for the screw press of this utility model.
[0023] Figure 9 This is the seventh structural schematic diagram of the vibration damping foundation for the screw press of this utility model.
[0024] Figure 10 for Figure 9 BB cross-sectional view.
[0025] Figure 11 for Figure 10 One of the enlarged images of part C.
[0026] Figure 12 for Figure 10 The second enlarged view of part C.
[0027] Figure 13 This is the eighth schematic diagram of the vibration damping foundation for the screw press of this utility model.
[0028] Figure 14 This is the ninth structural schematic diagram of the vibration reduction foundation for the screw press of this utility model.
[0029] Figure 15 This is the tenth structural schematic diagram of the vibration reduction foundation of the screw press of this utility model.
[0030] Figure 16 This is the eleventh schematic diagram of the vibration damping foundation of the screw press of this utility model.
[0031] Figure 17 This is the eleventh schematic diagram of the vibration damping foundation of the screw press of this utility model. Detailed Implementation
[0032] like Figure 1 and Figure 2 The vibration damping foundation of the screw press of this utility model includes a foundation 1 and a foundation block 2, with the foundation block 2 embedded in the foundation 1. It also includes an anti-torsional buffer device and a counter-pressure device. The anti-torsional buffer device includes a limiting baffle 3 and an anti-torsional elastic buffer component. The limiting baffle 3, made of steel plate, is fixedly integrated with the foundation block 2. The anti-torsional elastic buffer component includes a horizontal elastic element 7, specifically a polyurethane elastic pad made of microporous foamed polyurethane material. The anti-torsional elastic buffer component is disposed between the side of the press base 5 and the limiting baffle 3. Specifically, the anti-torsional elastic buffer component is disposed on the press base 5. The four corners; the counter-pressure device includes a counter-pressure plate 6 and anchor bolts 4. The lower part of the anchor bolts 4 is fixedly installed in the base block 2. The counter-pressure plate 6 is placed on top of the press base 5 and the anti-torsional elastic buffer component. The outer end face of the counter-pressure plate 6 is pressed against the limiting baffle 3 and is limited in the horizontal direction. The counter-pressure plate 6 is provided with mounting through holes corresponding to the anchor bolts. The press base 5 is provided with assembly through holes corresponding to the anchor bolts. A horizontal buffer gap 13 is left between the assembly through holes and the anchor bolts 4. The anchor bolts 4 are sequentially matched with the assembly through holes and mounting through holes from bottom to top to fix the press base 5 and the counter-pressure plate 6 on the base block 2.
[0033] It should be noted that, as Figure 2 As shown, a buffer gap 13 should be left between the assembly through hole and the anchor bolt 4 in all horizontal directions, rather than in a specific horizontal direction. Of course, based on the above principle, this example uses a circular assembly through hole as an example. In actual applications, the specific shape of the assembly through hole can be varied. It can also be a circular hole or a square hole or other shapes. Here, only the text is given as an explanation. In practice, it can be designed and selected according to the engineering needs. It is explained here as well.
[0034] The vibration-damping foundation of this screw press allows relative movement between the press base and the base block and the counter-pressure plate by setting a counter-pressure device and an anti-torsion buffer device. The counter-pressure plate 6 clamps the press base 5 with the base block 2, and the press base 5 and the counter-pressure plate 6 are fixed to the base block 2 by anchor bolts 4. Because a buffer gap 13 is left between the assembly through hole on the press base 5 and the anchor bolt 4, the press base 5 can only move horizontally or twist between the counter-pressure plate 6 and the base block 2 during operation, which can effectively suppress the overturning or swaying of the equipment and help improve the processing accuracy. At the same time, because an anti-torsion elastic buffer component is also set between the press base 5 and the limit baffle 3, when the press base 5 moves horizontally or twists, the anti-torsion elastic buffer component is compressed to provide elasticity. The buffering mechanism balances the inertial force of the equipment's movement or rotation around the vertical axis, avoiding the many drawbacks caused by the direct impact contact between the press base and the limit baffle in the prior art. The beneficial technical effects are reflected in: (1) On the one hand, it can effectively prevent the anchor bolts from loosening or shearing; (2) On the other hand, it can effectively protect the foundation block and prevent damage, greatly improving the service life of the foundation structure, which is conducive to better ensuring the normal operation of the equipment, reducing the equipment failure rate and maintenance time, achieving cost savings and increased production, and thus creating better economic benefits; (3) At the same time, the counter-pressure device provides vertical limit and horizontal guidance for the press base, which can effectively limit the flipping of the press base, further protect the anchor bolts and foundation block from damage, and make it safer and more reliable. As the above analysis shows, when the screw press base of the present example is applied to reduce vibration, the anti-torsional elastic buffer component in the anti-torsional buffer device is compressed when the screw press base twists during operation. This provides a counter-torsional torque to balance the rotational inertia of the screw press, causing it to stop rotating. The anti-torsional elastic buffer component then rebounds to help the screw press return to its original position, ensuring normal operation of the equipment. Furthermore, compared to the existing technology that uses rigid structures such as steel baffles for rigid anti-torsional action, the application of the vibration-reducing foundation of this screw press increases the torsion angle and lengthens the torsional action time. Therefore, the force on the anti-torsional buffer device decreases, and the torque also decreases. Consequently, the stress on the screw press frame and its components decreases, which helps improve the fatigue life of the equipment and foundation blocks and reduces the equipment failure rate. Additionally, it reduces the vibration level of the foundation and the vibration interference caused by the propagation of foundation vibration to surrounding areas.
[0035] In summary, the vibration-damping foundation of this utility model for a screw press has a simple structure and a long service life. It can optimize the stress during the operation of the equipment, avoid damage to the equipment, and thus effectively improve the utilization rate and processing accuracy of the equipment, which is conducive to improving economic benefits. It can be applied to the foundation vibration control of various friction screw presses and electric direct-drive screw presses, and has a very broad application prospect.
[0036] It should be noted that, in this example, the anti-torsional buffer device of the vibration damping foundation of the screw press of this utility model is described using a polyurethane elastic pad as an example of the horizontal elastic element 7 constituting the anti-torsional elastic buffer component. In practical applications, the horizontal elastic element can be at least one of a helical spring, disc spring, leaf spring, rubber elastic pad, metal-rubber composite spring, or polyurethane elastic pad. Furthermore, the anti-torsional elastic buffer component can also be a combination of a horizontal elastic element and a damper. The horizontal elastic element is at least one of a helical spring, disc spring, leaf spring, rubber elastic pad, metal-rubber composite spring, or polyurethane elastic pad, and the damper is at least one of a viscous damper, eddy current damper, orifice throttling damper, elastic rubber damper, or elastic polyurethane damper. Additionally... Figure 2 Taking the example of anti-torsional elastic buffer components being installed at the four corners of the press base 5, the installation method of the anti-torsional elastic buffer components can vary depending on the specific shape of the press base. For example... Figure 3 As shown, when the outer contour of the press base 5 is a relatively regular rectangle, the horizontal elastic element 7, serving as an anti-torsional elastic buffer component, can also be arranged around the press base. Since the horizontal elastic element 7 is a polyurethane elastic pad made of microporous foamed polyurethane material, this polyurethane elastic pad can utilize its internal micropores to provide deformation space, eliminating the need for external deformation gaps. Therefore, it can fill the space between the press base 5 and the limiting baffle 3. This full-fill structure effectively prevents foreign objects from falling in, making it very safe and reliable. Of course, for screw presses with relatively small torsional inertia, the anti-torsional elastic buffer component can also be arranged at at least two or three corners along the diagonal direction of the press base. These are all simple variations based on the technical principle of this utility model and are all within the protection scope claimed by this utility model.
[0037] It should also be noted that the installation interfaces between different types and models of screw presses and the base block are different. In addition to the relatively fixed anchor bolt connection, some also have other connection interfaces such as pre-tightening large nuts, which cannot be exhaustively listed here. Since other connection interfaces besides anchor bolts are basically unrelated to the utility model points of this utility model, they are not specifically shown in the attached drawings, but are described in text form here.
[0038] Example 2
[0039] like Figure 4 The vibration damping foundation of the screw press of this utility model differs from that of Embodiment 1 in that it also includes a wear-resistant layer 12. The wear-resistant layer 12 is disposed between the press base 5 and the foundation block 2, and the wear-resistant layer 12 is specifically composed of a polytetrafluoroethylene plate.
[0040] Compared with Embodiment 1, in the technical solution described in this example, since a wear-resistant layer 12 made of polytetrafluoroethylene plate is provided between the base block 2 and the press base 5, the press base 5 can effectively protect the surface of the base block 2 from being crushed or worn when it slides or twists horizontally between the counter-pressure plate 6 and the base block 2, which is beneficial to extending the service life of the base block.
[0041] It should be noted that the materials used for the wear-resistant layer in this utility model are diverse. Besides the polytetrafluoroethylene (PTFE) sheet already mentioned, the wear-resistant layer can also be composed of other wear-resistant sheets, steel plates, or steel plates with a wear-resistant functional layer on the surface. These other wear-resistant sheets include copper plates, nylon plates, or powder metallurgy plates, and the wear-resistant functional layer includes a PTFE layer, a powder metallurgy layer, or a copper-plated layer. As long as the strength and wear resistance meet the requirements, they can all be used in this utility model. Furthermore, based on... Figure 4 The technical principle of the solution can also be achieved by setting the wear-resistant layer between the counter-pressure plate and the press base, or even setting the wear-resistant layer at both locations. These are simple variations based on the technical principle of this utility model. They are not shown in the figures here, but are only described in words and are all within the protection scope of this utility model.
[0042] Example 3
[0043] like Figure 5 The vibration damping foundation of the screw press of this utility model differs from that of Embodiment 1 in that the anti-torsional buffer device includes a horizontal elastic element, which is a disc spring assembly composed of a disc spring 8 and a centering member 9, and the disc spring assembly is disposed between the press base 5 and the limiting baffle 3; in addition, it also includes a vertical buffer protection device, which includes a vertical buffer elastic element, specifically a rubber elastic pad 10, which is disposed between the press base 5 and the base block 2.
[0044] Compared with Embodiment 1, the vibration-damping foundation of the screw press described in this example utilizes a disc spring assembly as an anti-torsional elastic buffer component, which can also effectively buffer the rotational inertial force, and it also has the advantages described in Embodiment 1. In addition, after adding a vertical buffer protection device composed of a rubber elastic pad in the technical solution described in this example, on the one hand, it can effectively buffer the vertical inertial force and overturning moment between the press base and the base block, avoiding damage to the base block. It can significantly reduce the swaying of the equipment and prevent the screw press from overturning. It can also prevent the vertical inertial force from being reflected back to the press base by the base block when the press base and the base block are in direct hard contact, thereby effectively protecting the equipment and preventing the equipment and its accessories from being damaged by impact. On the other hand, since the vertical buffer elastic element composed of the rubber elastic pad has good elastic deformation capability, the horizontal torsional displacement of the screw press can be achieved through the horizontal shear deformation of the rubber elastic pad, no longer relying on the friction between the press base and the base block. Therefore, the wear-resistant layer on the surface of the base block can be omitted. As can be seen from the above analysis, by setting up anti-torsion buffer devices and vertical buffer protection devices, it is possible to effectively reduce equipment failure rate and maintenance time, improve equipment processing accuracy, and significantly enhance equipment utilization and economic benefits.
[0045] Based on the technical principles of Embodiment 1 and this example, the anti-torsional elastic buffer component can also be a composite horizontal elastic element composed of a disc spring and an elastic material, which can also achieve similar technical effects. Here, it is only described in words and no additional drawings are provided. It is also within the protection scope claimed by this utility model.
[0046] Furthermore, it should be noted that the specific forms of vertical buffer protection devices are diverse. These devices may include a vertical buffer elastic element, or a combination of a vertical buffer elastic element and a damper. The vertical buffer elastic element is located between the press base and the foundation block. The vertical buffer elastic element is at least one of a helical spring, disc spring, leaf spring, rubber elastic pad, metal-rubber composite spring, or polyurethane elastic pad. The damper is at least one of a viscous damper, eddy current damper, orifice throttling damper, elastic rubber damper, or elastic polyurethane damper. These are all variations based on the technical principles of this utility model and are within the scope of protection claimed by this utility model.
[0047] Example 4
[0048] like Figure 6The vibration reduction foundation of the screw press of this utility model differs from that of Embodiment 3 in that the vertical buffer protection device also includes a pressure equalizing plate 11 made of steel plate. The pressure equalizing plate 11 is set above the foundation block 2. The rubber elastic pad 10, which serves as a vertical elastic buffer element, is located between the pressure equalizing plate 11 and the foundation block 2. The press base 5 is placed on the pressure equalizing plate 11. The pressure equalizing plate 11 is provided with clearance through holes corresponding to the anchor bolts 4. A buffer gap 13 is left between the clearance through holes and the anchor bolts 4. In addition, horizontal elastic elements 7 are provided between the pressure equalizing plate 11 and the limiting baffle 3, and between the press base 5 and the limiting baffle 3.
[0049] Compared with Embodiment 3, in the technical solution described in this example, the addition of a pressure equalizing plate in the vertical buffer protection device solves the problem of unevenness of the foundation block surface, which prevents leveling after laying the rubber elastic pad, thus providing a flat surface to ensure the stability of the screw press. Furthermore, the pressure equalizing plate, with its clearance holes and anchor bolts, provides a buffer gap between the press base and the rubber elastic pad. Therefore, when the screw press moves horizontally or twists, the pressure equalizing plate moves synchronously with the press base, effectively protecting the rubber elastic pad and preventing it from being scratched by the press base or by debris from processed parts during operation, thus extending the service life of the foundation structure. In addition, the simultaneous installation of a horizontal elastic element 7 between the pressure equalizing plate and the limiting baffle further buffers the rotational inertia force generated during equipment operation.
[0050] It should be noted that in this utility model, the vertical buffer elastic element in the vertical buffer protection device and the horizontal elastic element in the anti-torsion buffer device can be made of the same material or different materials. In practice, the appropriate material can be selected according to the actual needs of the project.
[0051] Example 5
[0052] like Figure 7 The vibration reduction foundation of the screw press of this utility model differs from that of Embodiment 4 in that the vertical buffering elastic element in the vertical buffering protection device also includes a disc spring 8. The disc spring assembly formed by the disc spring 8 and the centering member 9 is integrated with the rubber elastic pad 10. In addition, a horizontal elastic element 7 is provided only between the press base 5 and the limiting baffle 3. The horizontal elastic element 7 is specifically composed of a rubber elastic pad.
[0053] Compared to Embodiment 4, the greatest significance of adding disc springs to the vertical buffer protection device is that the disc springs can be used to increase the local load-bearing capacity, which is beneficial for optimizing stress distribution and reducing costs. Preferably, disc springs can be installed around the base of the press or around the pressure equalizing plate.
[0054] It should be noted that, based on the technical principle of this example, a disc spring can also be provided in the vertical buffer protection device described in Embodiment 4. This is only described in words here and is also within the protection scope claimed by this utility model.
[0055] Example 6
[0056] like Figure 8 The vibration damping foundation of the screw press of this utility model differs from that of Embodiment 4 in that it also includes a wear-resistant layer. The wear-resistant layer is disposed between the press base 5 and the rubber elastic pad 10. The wear-resistant layer is composed of a steel plate 15 with a wear-resistant functional layer on its surface. Specifically, the wear-resistant functional layer is a copper-plated layer 16. In addition, the steel plate 15 covers the entire surface of the rubber elastic pad 10. The outer end face of the steel plate 15 directly contacts and cooperates with the limiting baffle 3 and is horizontally limited. In this example, the steel plate 15 is also used as a pressure equalizing plate. There is no longer a need to set a buffer gap between the clearance through hole on the steel plate 15 and the anchor bolt 4.
[0057] Compared with Example 4, in the technical solution described in this example, the wear-resistant steel plate 15 (i.e., the pressure equalizing plate) covers the entire surface of the rubber elastic pad, which can better protect the rubber elastic pad from damage. In addition, since the steel plate 15 is horizontally limited by the limiting baffle, the rubber elastic pad will no longer undergo horizontal shear deformation when the screw press moves or twists, which can effectively avoid fatigue damage to the pad and further extend the service life of the rubber elastic pad. Furthermore, since a wear-resistant functional layer is added to the surface of the steel plate 15, the press base slides or twists relative to the surface of the wear-resistant layer, which reduces the wear resistance requirements of the pressure equalizing plate (i.e., the steel plate 15) and helps to extend the service life of the pressure equalizing plate.
[0058] In the technical solution described in this example, integrating the equalizing plate and the wear-resistant layer together helps reduce the number of components and simplify the system structure. Of course, the wear-resistant layer in this invention can be made of a wide variety of materials, including wear-resistant sheet metal, steel plate, or steel plate with a wear-resistant functional layer on its surface. The wear-resistant sheet metal can include copper plate, PTFE plate, nylon plate, or powder metallurgy plate, and the wear-resistant functional layer can include a PTFE layer, a powder metallurgy layer, or a copper-plated layer. Any material that meets the strength and wear resistance requirements is suitable for this invention; therefore, not all examples are listed here, but all fall within the scope of protection claimed by this invention.
[0059] Based on the technical principles of this example, the pressure equalizing plate and the wear-resistant layer in this utility model can be implemented by the same component. However, it should be noted that the requirements for the pressure equalizing plate and the wear-resistant layer are different. The pressure equalizing plate needs sufficient surface stiffness to ensure that the vertical buffer elastic element is subjected to force as evenly as possible. The wear-resistant layer focuses more on the wear resistance of the material. For example, a thicker steel plate can be used as the pressure equalizing plate, and a thinner copper plate can be used as the wear-resistant layer to cooperate with the steel plate. This utility model sets up two functional units, the wear-resistant layer and the pressure equalizing plate, according to their functional characteristics. The main reasons are: on the one hand, in order to expand the range of materials and control the amount of expensive materials used, it is beneficial to control the product cost and improve the cost performance; on the other hand, another advantage of using special wear-resistant materials such as PTFE plates to cooperate with the pressure equalizing plate made of steel plates is that these wear-resistant materials also have better corrosion resistance. After the steel plate surface is treated with anti-corrosion, the anti-corrosion layer of the steel plate will not be worn away quickly, which is conducive to the long-term corrosion protection of the steel plate and a longer service life. Based on the above technical principles, in Embodiments 4 and 5 of this utility model, since the equalizing plate 11 made of steel plate also has good wear resistance, it can also be used as a wear-resistant layer, thus achieving good technical effects.
[0060] Example 7
[0061] like Figure 9 , Figure 10 and Figure 11 The vibration damping foundation of the screw press of this utility model differs from that of Embodiment 3 in that the anti-torsional elastic buffer component includes a horizontal elastic element 7 made of oil-resistant rubber pad and a protective pressure equalizing plate 14. The mating surfaces of the horizontal elastic element 7 and the press base 5 and the horizontal elastic element 7 and the limiting baffle 3 are respectively provided with protective pressure equalizing plates 14. The protective pressure equalizing plate 14 is specifically a steel plate, which is vulcanized into one piece with the horizontal elastic element 7. In addition, it also includes a wear-resistant layer 12, which is made of powder metallurgy plate. The vertical buffer elastic element is made of rubber elastic pad 10. The wear-resistant layer 12 is respectively disposed between the rubber elastic pad 10 and the base block 2 and between the rubber elastic pad 10 and the press base 5.
[0062] Compared with Embodiment 2, in the technical solution described in this example, the addition of a protective pressure equalizing plate 14 to the surface of the horizontal elastic element 7 solves the problem of uneven mating surfaces of the press base and the limiting baffle, optimizes the force on the horizontal elastic element, and effectively prevents the horizontal elastic element made of oil-resistant rubber pad from being punctured or damaged by contact with uneven surfaces, which is beneficial to improving the applicability and service life of the anti-torsion buffer device. In addition, since wear-resistant layers 12 are added above and below the rubber elastic pad 10, the press base can directly rotate on the surface of the wear-resistant layer during operation. Its torsional displacement is no longer mainly offset by the horizontal shear deformation of the rubber elastic pad, which can effectively avoid fatigue damage to the pad. Furthermore, a wear-resistant layer is also added between the base block and the rubber elastic pad, which can effectively prevent the rubber elastic pad from being scratched by the uneven surface of the base block during operation. These measures are all beneficial to further extend the service life of the vertical buffer elastic element.
[0063] It should be noted that, based on the technical principles of this example, in order to better accommodate processing errors and ensure that the anti-torsional buffer device maintains effective contact with the press base and the limit baffle, such as... Figure 12 As shown, gap filling layers 17 can be provided between the anti-torsion buffer device and the press base, and between the anti-torsion buffer device and the limiting baffle, respectively. The gap filling layers 17 can be cast on-site using a curable material with good strength, good plasticity, and good fluidity. Furthermore, as... Figure 13 As shown, a wear-resistant layer 12 can also be provided between the rubber elastic pad 10 and the press base 5, and a pressure equalizing plate 11 can be provided between the rubber elastic pad 10 and the base block 2; or as shown... Figure 14 As shown, pressure equalizing plates 11 are simultaneously installed between the rubber elastic pad 10 and the base block 2, and between the rubber elastic pad 10 and the press base 5; for example, it can also be as follows: Figure 15 As shown, a pressure equalizing plate 11 and a wear-resistant layer 12 are respectively provided between the rubber elastic pad 10 and the base block 2 and between the rubber elastic pad 10 and the press base 5, which can also achieve good technical effects. These are simple changes based on the technical principle of this utility model and are all within the protection scope claimed by this utility model.
[0064] Example 8
[0065] like Figure 16 The vibration-damping foundation of the screw press of this utility model is shown, and Figure 14The difference in the technical solution shown is that the vertical buffer protection device includes a combination of a vertical buffer elastic element and a damper. Specifically, the vertical buffer elastic element is a steel helical spring 19, and the damper is a viscous damper 18. The steel spring damping vibration isolation device made of the steel helical spring 19 and the viscous damper 18 is arranged between the equalizing plate 11. In addition, it also includes a wear-resistant layer 12, which is arranged between the counter-pressure plate 6 and the press base 5. Specifically, the wear-resistant layer 12 is a powder metallurgy plate integrally fixed on the bottom surface of the counter-pressure plate 6. Furthermore, the anti-torsional buffer device includes a horizontal elastic element, which is a disc spring assembly composed of a disc spring 8 and a centering member 9. The disc spring assembly is arranged between the press base 5 and the limiting baffle 3.
[0066] In the technical solution described in this example, the vertical buffer protection device adopts a steel spring damping vibration isolation device, which has a large load-bearing capacity, strong energy dissipation capacity, and better vibration isolation and reduction effect. It can also reduce the vibration level of the base block and the vibration interference caused by the base block's vibration propagating to the surrounding area. Furthermore, the anti-torsional buffer device also uses steel springs, specifically steel disc springs, in its anti-torsional elastic buffer component, which also has good load-bearing capacity and service life. Of course, the anti-torsional buffer device can also reduce the vibration level of the base block and the vibration interference caused by the base block's vibration propagating to the surrounding area. In addition, the wear-resistant layer on the counter-pressure plate effectively improves the wear resistance of the counter-pressure plate in conjunction with the screw press, thus extending the service life of the counter-pressure plate. Of course, based on the above technical principles, wear-resistant layers can also be simultaneously provided between the counter-pressure plate and the press base, and between the press base and the base block, achieving the same good technical effect. No further drawings are provided here, and these are also within the scope of protection claimed by this utility model.
[0067] It should also be noted that, as Figure 6 and Figure 7 In the illustrated technical solution, the rubber elastic pad 10, serving as a vertical elastic buffer element, can withstand a large torsional force. During operation, the pressure equalizing plate 11 is allowed to move along with the press base 5. Therefore, appropriate gaps are maintained between the pressure equalizing plate 11 and the limiting baffle 3. At this time, the pressure equalizing plate 11 can move vertically, and it can also move or twist horizontally. However, for... Figure 16The technical solution shown in this example employs a steel spring damping vibration isolation device made of a steel helical spring 19 and a viscous damper 18. Since the steel spring damping vibration isolation device has a weak ability to withstand torsional forces, the equalizing plate 11 is not allowed to move with the press base 5 during operation. Therefore, the equalizing plate 11 is directly engaged with the limiting baffle 3, which limits its movement horizontally. At this point, the equalizing plate 11 can only move vertically and cannot move or twist horizontally, thus protecting the steel spring damping vibration isolation device and ensuring its normal operation, providing reliable vibration isolation and reduction performance. The above technical features are also suitable for the arrangement of wear-resistant layers that also function as equalizing plates, and will be explained here as well.
[0068] Example 9
[0069] like Figure 17 The vibration reduction foundation of the screw press of this utility model differs from that of Embodiment 4 in that it also includes a counterweight 20 made of cast steel. The counterweight 20 is located below the press base 5 and is fixedly connected to the press base 5. The counterweight 20 is provided with clearance through holes corresponding to the anchor bolts 4. The clearance through holes and the anchor bolts are provided with buffer gaps 13 in all horizontal directions. The horizontal elastic element 7, which is a torsional elastic buffer component, is provided between the side of the press base 5 and the limiting baffle 3 and between the side of the counterweight 20 and the limiting baffle 3.
[0070] Compared with Embodiment 4, the technical solution described in this example adds a counterweight, which increases the participating mass in the vibration isolation system, thus further improving the vibration reduction effect and reducing the impact response amplitude of the screw press. It should be noted that in this type of technical solution, the counterweight needs to move or twist horizontally together with the press base. Therefore, like the press base, buffer gaps must be left between the clearance through-hole and the anchor bolts in all horizontal directions. The counterweight cannot be directly horizontally limited by the limiting baffle. Furthermore, while this example uses a counterweight made of cast steel, in practical applications, the counterweight can also be made of steel plate or concrete, or a combination of both. It is particularly noteworthy that if the counterweight is made of steel plate or if a steel plate is provided on the mating surface between the counterweight and the rubber elastic pad, the steel plate within the counterweight can be directly used as a pressure equalizing plate, effectively integrating the pressure equalizing plate into the counterweight and achieving excellent technical results. These are simple variations based on the technical principle of this utility model, described in words only without additional drawings, and are all within the protection scope of this utility model.
[0071] The embodiments in this utility model are only for better illustrating the technical solutions of this utility model and should not be regarded as a limitation of this utility model. The technical features in many of the embodiments can also be used interchangeably. Based on the technical principles of this utility model, those skilled in the art can recombine the technical solutions described in the above embodiments or use similar technologies to simply replace some of the components. As long as they are based on the technical principles of this utility model, they are all within the protection scope claimed by this utility model.
Claims
1. A vibration-damping foundation for a screw press, comprising a foundation and a foundation block, wherein the foundation block is embedded in the foundation, characterized in that, It also includes an anti-torsion buffer device and a counter-pressure device. The anti-torsion buffer device includes a limiting baffle and an anti-torsion elastic buffer component. The anti-torsion elastic buffer component is disposed between the side of the press base and the limiting baffle. The limiting baffle is fixedly disposed as a whole with the base block. The counter-pressure device includes a counter-pressure plate and anchor bolts. The lower part of the anchor bolts is fixedly disposed in the base block. The counter-pressure plate is placed on top of the press base and the anti-torsion elastic buffer component. The outer end face of the counter-pressure plate abuts against the limiting baffle and is horizontally limited. The counter-pressure plate is provided with mounting through holes corresponding to the anchor bolts. The press base is provided with assembly through holes corresponding to the anchor bolts. A horizontal buffer gap is left between the assembly through holes and the anchor bolts. The anchor bolts are sequentially engaged with the assembly through holes and mounting through holes from bottom to top to fix the press base and the counter-pressure plate on the base block.
2. The vibration-damping foundation for the screw press as described in claim 1, characterized in that, The vibration damping foundation also includes a wear-resistant layer, which is disposed between the press base and the foundation block, and / or between the counter-pressure plate and the press base. The wear-resistant layer has clearance through holes corresponding to the anchor bolts.
3. The vibration-damping foundation for the screw press as described in claim 1, characterized in that, The vibration damping foundation also includes a vertical buffer protection device, which includes a vertical buffer elastic element or a combination of a vertical buffer elastic element and a damper. The vertical buffer elastic element is located between the press base and the foundation block. The vertical buffer elastic element is at least one of a helical spring, disc spring, leaf spring, rubber elastic pad, metal-rubber composite spring, or polyurethane elastic pad. The damper is at least one of a viscous damper, eddy current damper, orifice throttling damper, elastic rubber damper, or elastic polyurethane damper.
4. The vibration-damping foundation for the screw press as described in claim 2, characterized in that, The vibration damping foundation also includes a vertical buffer protection device, which includes a vertical buffer elastic element or a combination of a vertical buffer elastic element and a damper. The vertical buffer elastic element is located between the press base and the foundation block. The vertical buffer elastic element is at least one of a helical spring, disc spring, leaf spring, rubber elastic pad, metal-rubber composite spring, or polyurethane elastic pad. The damper is at least one of a viscous damper, eddy current damper, orifice throttling damper, elastic rubber damper, or elastic polyurethane damper.
5. The vibration-damping foundation for the screw press as described in claim 3 or 4, characterized in that, The vertical buffer protection device also includes a pressure equalizing plate, which is disposed between the vertical buffer elastic element and the press base or / and between the vertical buffer elastic element and the base block, and clearance through holes are provided on the pressure equalizing plate corresponding to the anchor bolts.
6. The vibration-damping foundation for the screw press as described in claim 4, characterized in that, When the wear-resistant layer is provided, it is disposed between the press base and the vertical buffer elastic device or / and between the vertical buffer elastic device and the base block.
7. The vibration-damping foundation for the screw press as described in claim 2 or 6, characterized in that, The wear-resistant layer is composed of wear-resistant sheet material, steel plate, or steel plate with wear-resistant functional layer on the surface. The wear-resistant sheet material includes copper plate, polytetrafluoroethylene plate, nylon plate, or powder metallurgy plate. The wear-resistant functional layer includes polytetrafluoroethylene layer, powder metallurgy layer, or copper plating layer.
8. The vibration-damping foundation for the screw press as described in claim 1, characterized in that, The anti-torsional elastic buffer component includes a horizontal elastic element or a combination of a horizontal elastic element and a damper; the horizontal elastic element is at least one of a helical spring, disc spring, leaf spring, rubber elastic pad, metal-rubber composite spring or polyurethane elastic pad, and the damper is at least one of a viscous damper, eddy current damper, orifice throttling damper, elastic rubber damper or elastic polyurethane damper.
9. The vibration-damping foundation for the screw press as described in claim 8, characterized in that, The anti-torsional elastic buffer component also includes a protective pressure equalizing plate, and the anti-torsional elastic buffer component is in contact with the press base through the protective pressure equalizing plate or / and the anti-torsional elastic buffer component is in contact with the limiting baffle through the protective pressure equalizing plate.
10. The vibration-damping foundation for the screw press as described in claim 9, characterized in that, A gap filling layer is provided between the protective pressure equalizing plate and the press base or / and between the protective pressure equalizing plate and the limiting baffle.
11. The vibration-damping foundation for the screw press as described in claim 1, characterized in that, The anti-torsional elastic buffer component is disposed around the base of the press, or the anti-torsional elastic buffer component is disposed at at least two corresponding corners along the diagonal direction of the base of the press.
12. The vibration-damping foundation for the screw press as described in claim 1, characterized in that, The vibration damping foundation also includes a counterweight, which is located below the press base and is fixedly connected to the press base. The counterweight has clearance through holes corresponding to the anchor bolts. The anti-torsional elastic buffer component is set between the side of the press base and the limit baffle, and between the side of the counterweight and the limit baffle.