Vibration reduction foundation of screw press
The screw press foundation with anti-torsion buffering and counter-pressure mechanisms effectively addresses rotational inertia issues, preventing bolt loosening and foundation damage, thus improving device reliability and extending lifespan.
Patent Information
- Application Number
- CN202510550082.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2025-07-15
AI Technical Summary
When the foundation structure of existing spiral presses cancels the rotational inertia force, it is easy to cause the anchor bolts to loosen or shear, and the foundation block is easily damaged, affecting the normal use of the equipment.
The torsion-resistant buffering device and the backpressure device are adopted, including a limit baffle, a torsion-resistant elastic buffering component, a counterpressure plate and anchor bolts, allowing the press base to move relative to the base block, and the rotational inertia force is buffered by the torsion-resistant buffering device, and vertical limit and guidance are provided through the backpressure device, combined with the vertical buffer protection device to buffer the vertical inertia force.
Effectively prevent anchor bolts from loosening or shearing, protecting foundation blocks, extending equipment life, reducing vibration interference, improving equipment utilization and processing accuracy, and reducing failure rate and maintenance time.
Smart Images
Figure CN120307690A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of vibration control, and relates to a basic structure of a screw press, in particular to an impact-resistant foundation of a screw press. Background Art
[0002] Screw presses include friction screw presses and electric direct-drive screw presses. The friction screw press is a friction-driven screw press. Due to its wide range of uses, simple structure, simple installation, operation and auxiliary equipment, and low price, it is widely used in stamping workshops, forging workshops and die forging workshops in industries such as machinery manufacturing, automobiles, tractors, and aviation. In addition, the friction press is also a building materials machine and is widely used for dry pressing of tiles, clay and refractory products. However, when such a screw press works, since the flywheel drives the screw to generate screw pressure to do work, after the slider presses against the workpiece, the remaining kinetic energy of the flywheel will drive the base and the foundation block of the friction press to twist under the action of rotational inertia. The electric screw press also has torsion due to the moment of inertia of the motor rotor and the screw. To offset this rotational inertia force, currently, when constructing the foundation of a friction press, steel baffles are arranged around the foundation block and the base, and the steel baffles are used to bear the above-mentioned rotational inertia. This kind of rigid-to-rigid and hard-to-hard protection mode has great drawbacks. For example, it will cause the anchor bolts connecting the base and the foundation block to loosen or be cut off frequently. Seriously, it may even cause the foundation block to be damaged, often resulting in shutdown for maintenance and affecting the normal use of the equipment.
[0003] In summary, the market urgently needs a more safe and durable basic structure for a friction press. Summary of the Invention
[0004] The purpose of the present invention is to overcome the above defects and provide a vibration damping foundation for a screw press that is more safe and durable.
[0005] The vibration damping foundation of the screw press of the present invention is realized as follows. It includes a foundation and a foundation block. The foundation block is embedded in the foundation. It also includes an anti-torsion buffer device and an anti-pressure device. The anti-torsion buffer device includes a limit baffle and an anti-torsion elastic buffer component. The anti-torsion elastic buffer component is arranged between the side of the press base and the limit baffle. The limit baffle is fixedly arranged with the foundation block as a whole. The anti-pressure device includes an anti-pressure plate and anchor bolts. The lower part of the anchor bolts is fixedly arranged in the foundation block. The anti-pressure plate is placed on the top of the press base and the anti-torsion elastic buffer component, and the outer end face of the anti-pressure plate abuts against the limit baffle and is horizontally limited. Installation through holes are provided on the anti-pressure plate corresponding to the anchor bolts, and assembly through holes are provided on the press base 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 matched with the assembly through holes and the installation through holes from bottom to top to fix the press base and the anti-pressure plate on the foundation block.
[0006] Furthermore, the vibration damping foundation of the screw press of the present invention further includes a wear-resistant layer, which is arranged between the press base and the foundation block, and / or the wear-resistant layer is arranged between the counter pressure plate and the press base. The wear-resistant layer is provided with a relief through hole corresponding to the anchor bolt.
[0007] The vibration damping foundation of the screw press of the present invention may further include a vertical buffer protection device. The specific form of the vertical buffer protection device is various. 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, a disc spring, a leaf spring, a rubber elastic pad, a metal rubber composite spring or a polyurethane elastic pad. The damper is at least one of a viscous damper, an eddy current damper, a small hole throttling damper, an elastic rubber damper or an elastic polyurethane damper. In addition, the vertical buffer protection device may further include a uniform pressure plate, which is arranged between the vertical buffer elastic element and the press base or / and between the vertical buffer elastic element and the foundation block. The uniform pressure plate is provided with a relief through hole corresponding to the anchor bolt. For the technical solution with both a vertical buffer protection device and a wear-resistant layer, the wear-resistant layer is arranged 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 specific form of the wear-resistant layer in the present invention is various. 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 polytetrafluoroethylene plate, a nylon plate or a powder metallurgy plate. The wear-resistant functional layer includes a polytetrafluoroethylene layer, a powder metallurgy layer or a copper plating layer.
[0009] The specific form of the torsion-resistant elastic buffer component in the present invention is various. For example, the torsion-resistant 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, a disc spring, a leaf spring, a rubber elastic pad, a metal rubber composite spring or a polyurethane elastic pad. The damper is at least one of a viscous damper, an eddy current damper, a small hole throttling damper, an elastic rubber damper or an elastic polyurethane damper.
[0010] For the consideration of ensuring uniform force and improving service life, the torsion-resistant elastic buffer component may further include a protective uniform pressure plate. The torsion-resistant elastic buffer component is in contact and cooperation with the press base through the protective uniform pressure plate or / and the torsion-resistant elastic buffer is in contact and cooperation with the limit baffle through the protective uniform pressure plate. Additionally, when necessary, a gap filling layer may be arranged between the protective uniform pressure plate and the press base or / and between the protective uniform pressure plate and the limit baffle.
[0011] In the present invention, the torsion-resistant elastic buffer components are arranged around the press base, or the torsion-resistant elastic buffer components are arranged at least at two corresponding corners of the press base along the diagonal direction.
[0012] In addition, a counterweight can be added to the vibration reduction foundation of the screw press of the present invention. The counterweight is located below the press base and is fixedly connected to the press base. A through hole corresponding to the anchor bolt is provided on the counterweight. The torsion-resistant elastic buffer component is provided between the side of the press base and the limit baffle and between the side of the counterweight and the limit baffle. Preferably, the counterweight is made of steel plate or concrete, or the counterweight is made of steel plate and concrete.
[0013] The vibration reduction foundation of the screw press of the present invention allows the press base to make relative movement with respect to the foundation block and the back pressure plate by arranging a back pressure device and an anti-torsion buffer device. The anti-torsion buffer device is used to buffer the rotational inertia force of the screw press when it is working, and impact contact between the press base and the limit baffle is avoided. On the one hand, it can effectively prevent the anchor bolts from loosening or shearing, and on the other hand, it can effectively protect the foundation block from damage, greatly improving the service life of the foundation structure, which is conducive to better ensuring the normal operation of the equipment. At the same time, the back pressure device is used to provide the press base with vertical limitation and guidance during horizontal torsion, which can effectively limit the overturning of the press base, and can further protect The anchor bolts and foundation blocks are not damaged, which is safer and more reliable. In addition, the vibration level of the foundation block can be reduced, as well as the vibration interference caused by the vibration of the foundation block propagating to the surrounding area. In particular, after the vertical buffer protection device is set at the same time, the vertical inertia force between the press base and the foundation block can be effectively buffered to avoid damage to the foundation block. It can not only greatly reduce the swing of the equipment, but also avoid the vertical inertia force of the press base being reacted back to the press base by the foundation block when the press base is in direct hard contact with the foundation block, thereby effectively protecting the equipment and preventing the equipment and its accessories from being damaged by impact. In addition, the vibration level of the foundation block can be reduced, as well as the vibration interference caused by the vibration of the foundation block propagating to the surrounding area. From the above analysis, it can be seen that by setting up a back pressure device, an anti-torsion buffer device and a vertical buffer protection device, it is possible to effectively reduce the equipment failure rate and maintenance time, and significantly improve the utilization rate and economic benefits of the equipment.
[0014] To sum up, the vibration reduction foundation of the screw press of the present invention has a simple structure and a long service life. It can optimize the force applied during the operation of the equipment and avoid damage to the equipment, thereby effectively improving the equipment utilization rate and equipment processing accuracy, which is beneficial to improving economic benefits. It can be applied to the basic vibration control of various friction screw presses and electric direct-drive screw presses, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is one of the structural schematic diagrams of the vibration reduction foundation of the screw press of the present invention.
[0016] Figure 2 One of the A-A sectional views of Figure 1 .
[0017] Figure 3 One of the A-A sectional views of Figure 1 .
[0018] Figure 4 The second structural schematic diagram of the vibration damping foundation of the screw press of the present invention.
[0019] Figure 5 The third structural schematic diagram of the vibration damping foundation of the screw press of the present invention.
[0020] Figure 6 The fourth structural schematic diagram of the vibration damping foundation of the screw press of the present invention.
[0021] Figure 7 The fifth structural schematic diagram of the vibration damping foundation of the screw press of the present invention.
[0022] Figure 8 The sixth structural schematic diagram of the vibration damping foundation of the screw press of the present invention.
[0023] Figure 9 The seventh structural schematic diagram of the vibration damping foundation of the screw press of the present invention.
[0024] Figure 10 One of the B-B sectional views of Figure 9 .
[0025] Figure 11 One of the enlarged views of part C of Figure 10 .
[0026] Figure 12 One of the enlarged views of part C of Figure 10 .
[0027] Figure 13 The eighth structural schematic diagram of the vibration damping foundation of the screw press of the present invention.
[0028] Figure 14 The ninth structural schematic diagram of the vibration damping foundation of the screw press of the present invention.
[0029] Figure 15 The tenth structural schematic diagram of the vibration damping foundation of the screw press of the present invention.
[0030] Figure 16 The eleventh structural schematic diagram of the vibration damping foundation of the screw press of the present invention.
[0031] Figure 17 The eleventh structural schematic diagram of the vibration damping foundation of the screw press of the present invention. Detailed implementation mode
[0032] As Figure 1 and Figure 2 shown, the vibration damping foundation of the screw press of the present invention includes a foundation 1 and a foundation block 2. The foundation block 2 is embedded in the foundation 1, and also includes an anti-torsion buffer device and a counter-pressure device. The anti-torsion buffer device includes a limit baffle 3 and an anti-torsion elastic buffer component. Among them, the limit baffle 3 made of steel plate is fixedly arranged integrally with the foundation block 2. The anti-torsion elastic buffer component includes a horizontal elastic element 7. The horizontal elastic element 7 is specifically a polyurethane elastic pad made of microcellular foamed polyurethane material. The anti-torsion elastic buffer component is arranged between the side surface of the press base 5 and the limit baffle 3. Specifically, the anti-torsion elastic buffer component is arranged at the four corners of the press base 5. The counter-pressure device includes a counter-pressure plate 6 and anchor bolts 4. The lower part of the anchor bolts 4 is fixedly arranged in the foundation block 2. The counter-pressure plate 6 is placed on the top of the press base 5 and the anti-torsion elastic buffer component, and the outer end face of the counter-pressure plate 6 abuts against the limit baffle 3 and is limited in the horizontal direction. Mounting through holes are provided on the counter-pressure plate 6 corresponding to the anchor bolts, and assembly through holes are provided on the press base 5 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 the mounting through holes from bottom to top to fix the press base 5 and the counter-pressure plate 6 on the foundation block 2.
[0033] It should be noted that, as Figure 2 shown in, a buffer gap 13 should be left in all horizontal directions between the assembly through holes and the anchor bolts 4, rather than a specific horizontal direction. Of course, based on the above principle, in this example, the circular assembly through holes are taken as an example for illustration. In actual application, the specific shape of the assembly through holes can be various, and it can also be other shapes such as oval holes or square holes. Only a textual description is given here, and it can be designed and selected according to engineering needs in practice. This is also explained here.
[0034] The vibration damping foundation of the screw press of the present invention is provided with a backpressure device and an anti-torsion buffer device, allowing the press base to move relative to the foundation block and the backpressure plate. The backpressure plate 6 and the foundation block 2 clamp the press base 5, and the press base 5 and the backpressure plate 6 are fixed to the foundation block 2 through anchor bolts 4. Since there is a buffer gap 13 between the assembly through holes provided on the press base 5 and the anchor bolts 4, during operation, the press base 5 can only move horizontally or twist between the backpressure plate 6 and the foundation block 2, effectively suppressing the flipping or yawing of the equipment, which is beneficial to improving the processing accuracy. At the same time, since an anti-torsion elastic buffer component is also provided between the press base 5 and the limit baffle 3, when the press base 5 undergoes translation or torsion, the anti-torsion elastic buffer component will be compressed to provide elastic buffering, thereby balancing the moving or rotational inertial force around the vertical axis of the equipment, avoiding many drawbacks caused by the direct impact contact between the press base and the limit baffle in the prior art. The beneficial technical effects achieved are as follows: (1) On the one hand, it can effectively prevent the anchor bolts from loosening or being sheared; (2) On the other hand, it can effectively protect the foundation block from being damaged, greatly increasing the service life of the foundation structure, being beneficial 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, by using the backpressure device to provide vertical limit and horizontal torsion guidance for the press base, the flipping of the press base can be effectively restricted, further protecting the anchor bolts and the foundation block from being damaged, making it safer and more reliable. From the above analysis, it can be known that after applying the vibration damping foundation of the screw press described in this example, when the screw press is working, when the press base undergoes torsion, the anti-torsion elastic buffer component in the anti-torsion buffer device is compressed, thereby providing a counter torque to balance the rotational inertial force of the screw press, causing the screw press to stop rotating, and then the anti-torsion elastic buffer component rebounds to help the screw press reset, ensuring the normal operation of the equipment. In addition, compared with using rigid structures such as steel baffles for rigid anti-torsion in the prior art, after applying the vibration damping foundation of the screw press of the present invention, the torsion angle of the screw press becomes larger and the torsion action time becomes longer. Therefore, the force on the anti-torsion buffer device becomes smaller, the torque also becomes smaller, and correspondingly, the stresses on the frame and various components of the screw press will become smaller, which is beneficial to improving the fatigue life of the equipment and the foundation block and reducing the equipment failure rate. In addition, it can also reduce the vibration level of the foundation and the vibration interference generated by the propagation of the foundation vibration to the surrounding area.
[0035] In summary, the vibration damping foundation of the screw press of the present invention has a simple structure and a long service life. It can optimize the force during the operation of the equipment, avoid equipment damage, thereby effectively improving the equipment utilization rate and equipment processing accuracy, being beneficial to increasing 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 the anti-torsion buffer device of the vibration damping foundation of the screw press of the present invention described in this example, the horizontal elastic element 7 that constitutes the anti-torsion elastic buffer component is taken as an example of a polyurethane elastic pad for illustration. In practical applications, the horizontal elastic element can be at least one of a helical spring, a disc spring, a leaf spring, a rubber elastic pad, a metal-rubber composite spring, or a polyurethane elastic pad; in addition, the anti-torsion 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, a disc spring, a leaf spring, a rubber elastic pad, a metal-rubber composite spring, or a polyurethane elastic pad, and the damper is at least one of a viscous damper, an eddy current damper, a small-hole throttling damper, an elastic rubber damper, or an elastic polyurethane damper; in addition, Figure 2 in this example, the anti-torsion elastic buffer components are arranged at the four corners of the press base 5 for illustration. According to the specific shape of the press base, the arrangement method of the anti-torsion elastic buffer components can also be different. For example Figure 3 as shown in, when the outer contour of the press base 5 is a relatively regular rectangle, the horizontal elastic element 7 as the anti-torsion elastic buffer component can also be arranged around the press base. Since the polyurethane elastic pad made of microcellular foamed polyurethane material is used for the horizontal elastic element 7, the polyurethane elastic pad can provide a deformation space by using the internal micropores and does not need to reserve an external deformation gap. Therefore, the space between the press base 5 and the limit baffle 3 can be filled. This full-fill structure can effectively prevent foreign objects from falling in and is very safe and reliable. Of course, for a screw press with a small torsional inertia force, the anti-torsion elastic buffer components can also be arranged at at least two corresponding corners along the diagonal direction of the press base, or at three corners. These are all simple changes based on the technical principle of the present invention and are within the protection scope required by the present invention.
[0037] In addition, it should be noted that since the installation interfaces between different types and models of screw presses and the foundation block are different, in addition to the relatively fixed anchor bolt connection, there are also other connection interfaces such as pre-tightening nuts, etc., which cannot be exhausted here. Since the other connection interfaces except the anchor bolts have basically no relevance to the invention points of the present invention, they are not specifically shown in the drawings and are described together in the form of text here.
[0038] Embodiment 2 As Figure 4 shown in the vibration damping foundation of the screw press of the present invention, the difference from Embodiment 1 is that it further includes a wear-resistant layer 12, and the wear-resistant layer 12 is arranged between the press base 5 and the foundation block 2, and the wear-resistant layer 12 is specifically composed of a polytetrafluoroethylene plate.
[0039] Compared with the first embodiment, in the technical solution described in this embodiment, since a wear-resistant layer 12 made of polytetrafluoroethylene plates is provided between the base block 2 and the press base 5, when the press base 5 horizontally slides or twists between the counter-pressure plate 6 and the base block 2, the surface of the base block 2 can be effectively protected from being crushed or worn, which is beneficial to extending the service life of the base block.
[0040] It should be noted that the material selection range of the wear-resistant layer in the present invention is diverse. In addition to the polytetrafluoroethylene plates already mentioned, the wear-resistant layer can also be composed of other wear-resistant plates, steel plates or steel plates with a wear-resistant functional layer provided on the surface. The other wear-resistant plates include copper plates, nylon plates or powder metallurgy plates. The wear-resistant functional layer includes a tetrafluoroethylene layer, a powder metallurgy layer or a copper plating layer. As long as the strength and wear resistance meet the requirements, they can all be applied to the present invention. In addition, based on Figure 4 the technical principle of the technical solution, the wear-resistant layer can also be provided between the counter-pressure plate and the press base, or even the wear-resistant layer can be provided at both of the above-mentioned positions at the same time, and good technical effects can also be achieved. These are all simple changes based on the technical principle of the present invention. No drawings are shown here one by one, and only written explanations are given, and they are all within the protection scope required by the present invention.
[0041] Embodiment Three As Figure 5 shown in the vibration damping foundation of the screw press of the present invention, the difference from the first embodiment is that the anti-torsion elastic buffer member in the anti-torsion buffer device includes a horizontal elastic element, and the horizontal elastic element 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 limit baffle 3. In addition, a vertical buffer protection device is further included, and the vertical buffer protection device includes a vertical buffer elastic element, and the vertical buffer elastic element is specifically a rubber elastic pad 10. The rubber elastic pad 10 is arranged between the press base 5 and the base block 2.
[0042] Compared with the first embodiment, in the damping foundation of the screw press of the invention described in this embodiment, the disc spring assembly is used as the torsion-resistant elastic buffer component, which can also achieve a good effect of buffering the rotational inertia force, and it also has the advantages described in the first embodiment; in addition, after adding the vertical buffer protection device composed of rubber elastic pads in the technical solution described in this embodiment, on the one hand, it can effectively buffer the vertical inertia force and overturning moment between the press base and the foundation block, avoid damage to the foundation block, which can not only greatly reduce the equipment swing, prevent the screw press from overturning, but also avoid the vertical inertia force being reacted back to the press base by the foundation block when the press base is in direct hard contact with the foundation block, thus effectively protecting the equipment and avoiding the equipment and its accessories from being damaged by impact; on the other hand, since the vertical buffer elastic element composed of rubber elastic pads has good elastic deformation ability, the horizontal torsional displacement of the screw press can be realized through the horizontal shear deformation of the rubber elastic pads, and it no longer depends on the friction between the press base and the foundation block, so the wear-resistant layer can be omitted on the surface of the foundation block. From the above analysis, by setting the torsion-resistant buffer device and the vertical buffer protection device, it is possible to effectively reduce the equipment failure rate and maintenance time, improve the equipment processing accuracy, and significantly improve the equipment utilization rate and economic benefits.
[0043] Based on the technical principles of the first embodiment and this embodiment, the torsion-resistant 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, only a textual description is given and no additional drawings are provided, and it is also within the protection scope required by the present invention.
[0044] In addition, it should be noted that the specific forms of the vertical buffer protection device are diverse. 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, a disc spring, a leaf spring, a rubber elastic pad, a metal rubber composite spring or a polyurethane elastic pad, and the damper is at least one of a viscous damper, an eddy current damper, a small hole throttling damper, an elastic rubber damper or an elastic polyurethane damper. These are all changes based on the technical principles of the present invention and are also within the protection scope required by the present invention.
[0045] Embodiment Four As Figure 6The vibration reduction foundation of the screw press of the present invention shown in the figure is different from that of Example 3 in that the vertical buffer protection device also includes a pressure equalizing plate 11 made of steel plate, and the pressure equalizing plate 11 is arranged above the base block 2. The rubber elastic pad 10 as a vertical elastic buffer element is located between the pressure equalizing plate 11 and the base block 2. The press base 5 is placed on the pressure equalizing plate 11, and a clearance hole is arranged on the pressure equalizing plate 11 corresponding to the anchor bolt 4, and a buffer gap 13 is left between the clearance hole and the anchor bolt 4; in addition, horizontal elastic elements 7 are simultaneously arranged between the pressure equalizing plate 11 and the limit baffle 3, and between the press base 5 and the limit baffle 3.
[0046] Compared with Example 3, in the technical scheme described in this example, since a pressure equalizing plate is added to the vertical buffer protection device, on the one hand, it can solve the problem that the rubber elastic pad cannot be leveled after laying due to the uneven surface of the foundation block, and provide a flat surface to ensure the stability of the screw press; on the other hand, a pressure equalizing plate is added between the press base and the rubber elastic pad, and a buffer gap is left between the clearance through hole set on the pressure equalizing plate and the anchor bolt. Therefore, when the screw press moves horizontally or twists, the pressure equalizing plate will move synchronously with the press base, which can effectively protect the rubber elastic pad and prevent the rubber elastic pad from being scratched by the press base or by debris of processed parts during operation, which is beneficial to extending the service life of the foundation structure; in addition, a horizontal elastic element 7 is simultaneously provided between the pressure equalizing plate and the limit baffle, which can better buffer the rotational inertia force generated when the equipment is working.
[0047] It is particularly important to point out that, in the present invention, the vertical buffer elastic element in the vertical buffer protection device and the horizontal elastic element in the anti-torsion buffer device may be made of the same material or different materials, and in practice they may be selected and used according to actual engineering needs.
[0048] Embodiment 5 like Figure 7 The vibration damping foundation of the screw press of the present invention shown in the figure is different from that of Example 4 in that the vertical buffer elastic element in the vertical buffer protection device also includes a disc spring 8, and the disc spring assembly composed of the disc spring 8 and the centering piece 9 is integrated with the rubber elastic pad 10; in addition, a horizontal elastic element 7 is only arranged between the press base 5 and the limit baffle 3, and the horizontal elastic element 7 is specifically composed of a rubber elastic pad.
[0049] Compared with the fourth embodiment, the greatest significance of adding a disc spring in the vertical buffer protection device is that the disc spring can be used to increase the local bearing capacity, which is conducive to optimizing the force and reducing the cost. Preferably, the disc spring can be arranged at the periphery of the press base or the periphery of the equalizing plate.
[0050] In particular, based on the technical principle of this example, disc springs can also be provided in the vertical buffer protection device described in the fourth embodiment. This is only described in words here and is also within the scope of protection required by the present invention.
[0051] Embodiment Six As Figure 8 shown, the vibration damping foundation of the screw press of the present invention is different from that of the fourth embodiment in that it further includes a wear-resistant layer. The wear-resistant layer is provided 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. The wear-resistant functional layer is specifically a copper plating 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 is directly in contact and cooperation with the limit baffle 3 and is horizontally limited. In this example, the steel plate 15 also serves as a pressure equalizing plate. There is no longer a need to provide a buffer gap between the relief through holes on the steel plate 15 and the anchor bolts 4.
[0052] Compared with the fourth embodiment, in the technical solution described in this example, the steel plate 15 (i.e., the pressure equalizing plate) of the wear-resistant layer 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 limit baffle, when the screw press moves or twists, the rubber elastic pad no longer undergoes horizontal shear deformation, which can effectively avoid fatigue damage of the pad body and is beneficial to further extending the service life of the rubber elastic pad. Also, due to the addition of a wear-resistant functional layer on the surface of the steel plate 15, relative sliding or twisting occurs between the press base and the surface of the wear-resistant layer, reducing the wear resistance requirements for the pressure equalizing plate (i.e., the steel plate 15) and being beneficial to extending the service life of the pressure equalizing plate.
[0053] In the technical solution described in this example, integrating the pressure equalizing plate and the wear-resistant layer is beneficial to reducing the number of components and simplifying the system structure. Of course, in the present invention, the selection range of the wear-resistant layer is diverse. It can be composed of wear-resistant plates, steel plates, or steel plates with wear-resistant functional layers on their surfaces. The wear-resistant plates include copper plates, polytetrafluoroethylene plates, nylon plates, or powder metallurgy plates. The wear-resistant functional layers include polytetrafluoroethylene layers, powder metallurgy layers, or copper plating layers. As long as the strength and wear resistance meet the requirements, they can all be applicable to the present invention. There is no need to list them one by one here, and they are all within the scope of protection required by the present invention.
[0054] Based on the technical principle of this example, the equalizing plate and the wear-resistant layer in the present invention can be realized by the same component. However, it should be noted that the requirements of the equalizing plate and the wear-resistant layer have different emphases. The equalizing plate needs to have sufficient surface stiffness to ensure that the vertical buffer elastic elements are stressed as evenly as possible. The wear-resistant layer pays more attention to the wear resistance of the material. For example, a relatively thick steel plate can be used as the equalizing plate, and then a relatively thin copper plate can be used as the wear-resistant layer to cooperate with the steel plate. The main reasons for the present invention to separately set two functional units of the wear-resistant layer and the equalizing plate according to their functional characteristics are as follows: On the one hand, in order to expand the material selection range and control the usage amount of relatively expensive materials, 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 polytetrafluoroethylene plates in cooperation with the equalizing plate made of steel plates is that these wear-resistant materials also have better corrosion resistance. After the steel plate surface is well anti-corrosion treated, the anti-corrosion layer of the steel plate will not be quickly worn and damaged, which is beneficial to the long-term anti-corrosion of the steel plate and has a longer service life. Based on the above technical principle, in Embodiment 4 and Embodiment 5 of the present invention, since the equalizing plate 11 made of steel plate also has good wear resistance, it can also be used as the wear-resistant layer at the same time, and good technical effects can be achieved.
[0055] Embodiment 7 As Figure 9 、 Figure 10 and Figure 11 As shown in the vibration damping foundation of the screw press of the present invention, the difference from Embodiment 3 is that the torsional resistance elastic buffer component includes a horizontal elastic element 7 made of an oil-resistant rubber pad and a protective equalizing plate 14. Protective equalizing plates 14 are respectively provided on the mating surfaces of the horizontal elastic element 7 and the press base 5 and the horizontal elastic element 7 and the limit baffle 3. The protective equalizing plate 14 is specifically a steel plate, which is vulcanized into one body with the horizontal elastic element 7; in addition, it also includes a wear-resistant layer 12, the wear-resistant layer 12 is composed of a powder metallurgy plate, the vertical buffer elastic element is composed of a rubber elastic pad 10, and the wear-resistant layer 12 is respectively arranged between the rubber elastic pad 10 and the foundation block 2 and between the rubber elastic pad 10 and the press base 5.
[0056] Compared with the second embodiment, in the technical solution described in this example, since the protective equalizing plate 14 is added to the surface of the horizontal elastic element 7, the problem of uneven mating surfaces of the press base and the limit baffle can be solved, the force on the horizontal elastic element can be balanced and optimized, and the horizontal elastic element made of oil-resistant rubber pads can be effectively prevented from being stabbed or damaged when contacting 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 twist and move on the surface of the wear-resistant layer during operation, and its torsional displacement no longer mainly offsets through the horizontal shear deformation of the rubber elastic pad, which can effectively avoid fatigue damage of the pad body. In addition, wear-resistant layers are 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. These measures are all beneficial to further extending the service life of the vertical buffer elastic element.
[0057] It should be noted that based on the technical principle of this example, in order to better adapt to machining errors and ensure that the anti-torsion buffer device is in effective contact with both the press base and the limit baffle, as Figure 12 shown, gap filling layers 17 can be respectively provided between the anti-torsion buffer device and the press base and between the anti-torsion buffer device and the limit baffle. The gap filling layer 17 can be cast on-site using a curable material with good strength, plasticity and fluidity; in addition, as Figure 13 shown, a wear-resistant layer 12 can also be provided between the rubber elastic pad 10 and the press base 5, and an equalizing plate 11 can be provided between the rubber elastic pad 10 and the base block 2; or as Figure 14 shown in Figure 15 , equalizing plates 11 can be provided between the rubber elastic pad 10 and the base block 2 and between the rubber elastic pad 10 and the press base 5 at the same time; for another example, as Figure 15 shown, an equalizing plate 11 and a wear-resistant layer 12 can be 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, and good technical effects can also be achieved. These are all simple variations based on the technical principle of the present invention and are within the scope of protection required by the present invention.
[0058] Embodiment Eight As Figure 16 shown, the vibration damping foundation of the screw press of the present invention, compared with 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. Among them, the vertical buffer elastic element is specifically a steel helical spring 19, and the damper is a viscous damper 18. The steel spring damper vibration isolation device made of the steel helical spring 19 and the viscous damper 18 is arranged between the equalizing plates 11; in addition, it also includes a wear-resistant layer 12, and the wear-resistant layer 12 is arranged between the reaction plate 6 and the press base 5. The wear-resistant layer 12 is specifically a powder metallurgy plate integrally and fixedly arranged on the bottom surface of the reaction plate 6; in addition, the anti-torsion elastic buffer component in the anti-torsion buffer device includes a horizontal elastic element, and the horizontal elastic element 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 limit baffle 3.
[0059] In the technical solution described in this example, the vertical buffer protection device adopts a steel spring damper vibration isolation device, which has a large load-bearing capacity, strong energy dissipation ability, and better vibration isolation and damping effects. In addition, it can also reduce the vibration level of the foundation block and the vibration interference generated by the vibration of the foundation block spreading to the surrounding area; in addition, the anti-torsion elastic buffer component in the anti-torsion buffer device also adopts a steel spring, specifically a steel disc spring, which also has good load-bearing capacity and service life. Of course, the anti-torsion buffer device can also reduce the vibration level of the foundation block and the vibration interference generated by the vibration of the foundation block spreading to the surrounding area; in addition, since a wear-resistant layer is provided on the reaction plate, the wear-resistant ability of the cooperation between the reaction plate and the screw press can be effectively improved, which is beneficial to improving the service life of the reaction plate. Of course, based on the above technical principle, a wear-resistant layer can also be set between the reaction plate and the press base and between the press base and the foundation block at the same time, and good technical effects can also be achieved. No additional drawings are shown here, and it is also within the scope of protection required by the present invention.
[0060] In addition, it should be noted that, as Figure 6 and Figure 7 shown in the technical solution, the rubber elastic pad 10 as the vertical elastic buffer element can withstand a large torsional force and allow the equalizing plate 11 to move together with the press base 5 during the working process. Therefore, an appropriate gap is left between the equalizing plate 11 and the limit baffle 3. At this time, the equalizing plate 11 can move vertically, and can also move or twist horizontally; however, for Figure 16In the technical solution of this example shown, the vertical buffer protection device adopts a steel spring damping vibration isolation device made of a steel coil spring 19 and a viscous damper 18. Since the steel spring damping vibration isolation device has a weak ability to withstand torsional force, the pressure equalizing plate 11 is not allowed to move with the press base 5 during operation. Therefore, the pressure equalizing plate 11 is directly contacted and matched with the limit baffle 3, and is limited in the horizontal direction by the limit baffle 3. At this time, the pressure equalizing plate 11 can only move vertically and cannot move or twist in the horizontal direction, thereby providing protection for the steel spring damping vibration isolation device, ensuring that the steel spring damping vibration isolation device can work normally and provide reliable vibration isolation and reduction performance. The above technical features are also suitable for the arrangement of a wear-resistant layer that also has the function of a pressure equalizing plate, which is explained here.
[0061] Embodiment 9 like Figure 17 The vibration reduction foundation of the screw press of the present invention shown in the figure is different from that of Example 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 as a whole. A clearance hole is provided on the counterweight 20 corresponding to the anchor bolt 4. A buffer gap 13 is left between the clearance hole and the anchor bolt in all horizontal directions. The horizontal elastic element 7 serving as a torsional elastic buffer component is arranged between the side of the press base 5 and the limit baffle 3 and between the side of the counterweight 20 and the limit baffle 3.
[0062] Compared with the fourth embodiment, the technical scheme described in this example adds a counterweight, and the counterweight is used to increase the parasitic mass in the vibration isolation system, which is beneficial to further improve the vibration reduction effect and reduce the impact response amplitude of the screw press. It should be noted that in this type of technical scheme described in this example, the counterweight needs to move or twist horizontally together with the press base. Therefore, like the press base, the clearance through hole and the anchor bolt must have buffer gaps in all horizontal directions, and the counterweight cannot be directly horizontally limited by the limit baffle; in addition, in this example, the counterweight made of cast steel is used as an example for explanation. In actual applications, the counterweight can also be made of steel plate or concrete, or made of steel plate and concrete. It should be pointed out in particular that if the counterweight is made of steel plate or the matching surface of the counterweight and the rubber elastic pad is provided with a steel plate, the steel plate in the counterweight can be directly used as an equalizing plate, which is equivalent to integrating the equalizing plate in the counterweight, and can also achieve good technical effects. These are simple changes based on the technical principles of the present invention, which are only explained in words here, and no additional drawings are attached. They are all within the protection scope required by the present invention.
[0063] The embodiments in the present invention are only for better illustrating the technical solutions of the present invention and should not be regarded as a limitation to the present invention. The technical features in many embodiments can also be cross-used. Based on the technical principle of the present invention, those skilled in the art can recombine the technical solutions described in the above embodiments or simply replace some of the components with similar technologies. As long as it is based on the technical principle of the present invention, it falls within the protection scope required by the present invention.
Claims
1. A vibration damping foundation for a screw press, comprising a foundation and a foundation block, the foundation block being embedded in the foundation, characterized in that, It further includes a torsional buffering device and a counter-pressure device. The torsional buffering device includes a limit baffle and a torsional elastic buffering component. The torsional elastic buffering component is arranged between the side of the press base and the limit baffle, and the limit baffle is fixedly arranged integrally 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 arranged in the foundation block. The counter-pressure plate is placed on the top of the press base and the torsional elastic buffering component, and the outer end face of the counter-pressure plate abuts against the limit baffle and is horizontally limited. Installation through holes are arranged on the counter-pressure plate corresponding to the anchor bolts, and assembly through holes are arranged on the press base corresponding to the anchor bolts. A horizontal buffering gap is left between the assembly through holes and the anchor bolts. The anchor bolts are sequentially matched with the assembly through holes and the installation through holes from bottom to top to fix the press base and the counter-pressure plate on the foundation block.
2. The vibration damping foundation of the screw press according to claim 1, characterized in that, The vibration damping foundation further includes a wear-resistant layer. The wear-resistant layer is arranged between the press base and the foundation block, and / or the wear-resistant layer is arranged between the counter-pressure plate and the press base. The wear-resistant layer is provided with a relief through hole corresponding to the anchor bolts.
3. The vibration damping foundation of the screw press according to claim 1, characterized in that, The vibration damping foundation further includes a vertical buffering and protecting device. The vertical buffering and protecting device includes a vertical buffering elastic element, or a combination of a vertical buffering elastic element and a damper. The vertical buffering elastic element is located between the press base and the foundation block; the vertical buffering elastic element is at least one of a helical spring, a disc spring, a leaf spring, a rubber elastic pad, a metal-rubber composite spring or a polyurethane elastic pad, and the damper is at least one of a viscous damper, an eddy current damper, a small-hole throttling damper, an elastic rubber damper or an elastic polyurethane damper.
4. The vibration damping foundation of the screw press according to claim 2, wherein, The vibration damping foundation further includes a vertical buffering and protecting device. The vertical buffering and protecting device includes a vertical buffering elastic element, or a combination of a vertical buffering elastic element and a damper. The vertical buffering elastic element is located between the press base and the foundation block; the vertical buffering elastic element is at least one of a helical spring, a disc spring, a leaf spring, a rubber elastic pad, a metal-rubber composite spring or a polyurethane elastic pad, and the damper is at least one of a viscous damper, an eddy current damper, a small-hole throttling damper, an elastic rubber damper or an elastic polyurethane damper.
5. The vibration damping foundation of the screw press according to claim 3 or 4, characterized in that The vertical buffering and protecting device further includes a pressure equalizing plate. The pressure equalizing plate is arranged between the vertical buffering elastic element and the press base and / or between the vertical buffering elastic element and the foundation block. The pressure equalizing plate is provided with a relief through hole corresponding to the anchor bolts.
6. The vibration damping foundation of the screw press according to claim 4, characterized in that, When the wear-resistant layer is provided, the wear-resistant layer is arranged between the press base and the vertical buffering elastic device and / or between the vertical buffering elastic device and the foundation block.
7. The vibration damping foundation of the screw press according to claim 2 or 6, characterized in that, 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 polytetrafluoroethylene plate, a nylon plate or a powder metallurgy plate. The wear-resistant functional layer includes a polytetrafluoroethylene layer, a powder metallurgy layer or a copper plating layer.
8. The vibration damping foundation of the screw press according to claim 1, characterized in that, The 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, a disc spring, a leaf spring, a rubber elastic pad, a metal-rubber composite spring, or a polyurethane elastic pad, and the damper is at least one of a viscous damper, an eddy current damper, a small-hole throttling damper, an elastic rubber damper, or an elastic polyurethane damper.
9. The vibration damping foundation of the screw press according to claim 8, characterized in that, The torsional elastic buffer component further includes a protective equalizing plate, and the torsional elastic buffer component is in contact and cooperation with the press base through the protective equalizing plate and / or the torsional elastic buffer is in contact and cooperation with the limit baffle through the protective equalizing plate.
10. The vibration damping foundation of the screw press according to claim 9, characterized in that, A gap filling layer is provided between the protective equalizing plate and the press base and / or between the protective equalizing plate and the limit baffle.
11. The vibration damping foundation of the screw press according to claim 1, characterized in that, The torsional elastic buffer component is arranged around the press base, or the torsional elastic buffer component is arranged at at least two corresponding corners of the press base along the diagonal direction.
12. The vibration damping foundation of the screw press according to claim 1, characterized in that, The vibration damping foundation further includes a counterweight, the counterweight is located below the press base and is fixedly connected to the press base, a relief through hole is provided on the counterweight corresponding to the anchor bolts, and the torsional elastic buffer component is arranged between the side surface of the press base and the limit baffle and between the side surface of the counterweight and the limit baffle.