A multi-hole vibration transmission structure of a shakeout plate of a vibrating shakeout machine

Abstract

The utility model provides a kind of porous type vibration conduction structure of vibrating shakeout machine shakeout plate belongs to vibrating shakeout machine technical field, the porous type vibration conduction structure of vibrating shakeout machine shakeout plate, for the shakeout operation of vibrating shakeout machine, including shakeout plate body, the shakeout plate body is rectangular plate structure, multiple vibration conduction holes are staggered distribution on the shakeout plate body along length direction and width direction, the vibration conduction hole penetrates the upper surface and lower surface of the shakeout plate body, it is characterized in that, the orifice edge of the vibration conduction hole extends to the lower surface direction of the shakeout plate body and forms conical vibration guide part, the taper surface between the conical vibration guide part and the lower surface of the shakeout plate body forms included angle, the conical vibration guide part is used to guide vibration energy to be transmitted from the upper surface to lower surface of the shakeout plate body and to periphery diffusion.

Description

Technical Field

[0001] This utility model belongs to the technical field of vibratory sand removal machines, specifically, it relates to a porous vibration transmission structure for the sand removal plate of a vibratory sand removal machine. Background Technology

[0002] In the foundry industry, vibratory shakeout machines are crucial equipment for separating castings from sand molds. Shaking is a key step in the casting production process, directly impacting the efficiency of casting cleaning and production cycle. Vibratory shakeout machines generate periodic vibrations through a vibrating device, which are transmitted to the shakeout plate. This vibration causes the sand mold placed on the plate to break, and the sand falls off the casting surface, completing the shakeout process. In existing vibratory shakeout machines, the shakeout plate typically uses a solid plate structure or has several simple circular holes on its surface. The vibrating device is connected to the shakeout plate via bolts or welding. When the vibrating device operates, the vibration force is transmitted from the connection point to the shakeout plate, relying on the rigidity and mass of the shakeout plate itself for vibration transmission. However, this traditional shakeout plate structure reveals significant technical defects in practical use; the vibration energy travels from the connection point to the center and edges of the shakeout plate. During transmission, due to the lack of an effective vibration transmission path and guiding structure, vibration waves are prone to attenuation and reflection when propagating inside the sand-falling plate. This results in uneven distribution of vibration intensity at different locations on the sand-falling plate, with higher vibration intensity near the connection point and significantly weaker vibration intensity in the central area far from the connection point. This makes it difficult for sand in some sand mold areas to fall off completely, affecting the sand-falling effect. To compensate for this deficiency, operators have to extend the vibration time or increase the vibration intensity. However, this not only reduces production efficiency but also increases energy consumption, exacerbates equipment wear, and shortens the service life of the sand-falling plate and vibration device. At the same time, the simple perforated structure of the existing sand-falling plate only serves to reduce weight and facilitate sand falling, without considering the impact of the perforations on vibration transmission. It cannot fully utilize the function of vibration energy transmission and diffusion, thus limiting the improvement of sand-falling efficiency. Utility Model Content

[0003] In view of this, the present invention provides a porous vibration transmission structure for the sand removal plate of a vibratory sand removal machine, which can solve the technical problems of uneven vibration energy transmission and low transmission efficiency in the vibration transmission process of the existing vibratory sand removal plate. This results in large differences in vibration intensity obtained by sand molds and castings at different positions on the sand removal plate, and sand in some areas is difficult to fall off completely, resulting in poor sand removal effect. It is necessary to extend the vibration time or increase the vibration intensity to complete the sand removal operation, which not only reduces production efficiency but also increases energy consumption and equipment wear. At the same time, the existing structural design of the sand removal plate lacks effective guidance and control of the vibration wave propagation path. Vibration energy is prone to attenuation and loss when transmitted inside the sand removal plate, making it impossible to achieve efficient utilization and uniform distribution of vibration energy.

[0004] This utility model is implemented as follows:

[0005] This utility model provides a multi-hole vibration transmission structure for a vibratory sand removal machine's sand removal plate, used for sand removal operations. It includes a sand removal plate body, which is a rectangular plate structure. Multiple vibration transmission holes are staggered along the length and width directions on the sand removal plate body. These holes penetrate the upper and lower surfaces of the sand removal plate body. The edges of the holes extend towards the lower surface of the sand removal plate body to form conical vibration guides. The conical surface of the conical vibration guide forms an angle with the lower surface of the sand removal plate body. These conical vibration guides guide vibration energy from the upper surface to the lower surface of the sand removal plate body and diffuse it to the surrounding area.

[0006] The technical effects of the multi-hole vibration transmission structure of the sand removal plate of the vibratory sand removal machine provided by this utility model are as follows: By setting multiple vibration transmission holes penetrating the upper and lower surfaces on the sand removal plate body, and forming a downward-extending conical vibration guide at the edge of the vibration transmission hole, when the vibration energy is transmitted from the upper surface to the lower surface of the sand removal plate body, the vibration wave can be guided by the conical surface of the conical vibration guide and diffused to the surrounding area, increasing the range and intensity of vibration transmission, improving the overall vibration transmission efficiency of the sand removal plate, and enabling the sand mold and casting to obtain a more uniform and sufficient vibration effect, thereby improving the sand removal effect and work efficiency.

[0007] Based on the above technical solution, the porous vibration transmission structure of the sand removal plate of the vibrating sand removal machine of this utility model can be further improved as follows:

[0008] The vibration transmission holes are arranged in a matrix on the sand-falling plate body, and the spacing between two adjacent vibration transmission holes is equal.

[0009] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by arranging multiple vibration transmission holes in a matrix on the sand removal plate body and making the spacing between two adjacent vibration transmission holes equal, the vibration transmission holes are uniformly distributed on the sand removal plate body, ensuring the uniformity of vibration energy transmission at various positions on the sand removal plate body, avoiding the problem of excessively strong or weak local vibration caused by uneven distribution of vibration transmission holes, so that the sand mold and casting parts supported on the sand removal plate can obtain balanced vibration force, improving the consistency and stability of the sand removal operation.

[0010] Furthermore, the conical surface of the conical vibration guide is shaped like an outwardly expanding trumpet, and the maximum diameter of the conical vibration guide is located on the lower surface of the sand drop plate body.

[0011] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by designing the conical surface of the conical vibration guide as an outwardly expanding trumpet shape, and placing the maximum diameter of the conical vibration guide at the lower surface of the sand-falling plate body, a gradually expanding structure from small to large is formed. This trumpet-shaped structure can gradually diffuse the vibration wave from the smaller upper opening to the larger lower opening, realizing the step-by-step amplification and diffusion of vibration energy, enhancing the ability of vibration wave to propagate to the surrounding area of ​​the sand-falling plate body, making the vibration range wider and the sand-falling effect more significant.

[0012] Furthermore, the lower surface of the sand-dropping plate body is provided with multiple reinforcing ribs, which extend along the length direction of the sand-dropping plate body. The reinforcing ribs have a trapezoidal cross-sectional structure, and the bottom edge of the reinforcing ribs is fixedly connected to the lower surface of the sand-dropping plate body.

[0013] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: By setting multiple reinforcing ribs extending along the length direction on the lower surface of the sand drop plate body and designing the reinforcing ribs as trapezoidal cross-section structures, not only is the overall structural strength and rigidity of the sand drop plate body enhanced, making the sand drop plate less prone to deformation or damage when subjected to vibration force and the weight of sand casting, but the trapezoidal cross-section reinforcing ribs can also serve as a transmission path for vibration waves, guiding vibration energy to propagate along the extension direction of the reinforcing ribs. Combined with vibration transmission holes, a crisscrossing vibration transmission network is realized, further improving the comprehensiveness and effectiveness of vibration transmission.

[0014] Furthermore, a gap is maintained between the reinforcing rib and the tapered vibration guide portion of the adjacent vibration conduction hole, and the gap forms a vibration wave propagation channel.

[0015] The beneficial effects of adopting the above-mentioned improved scheme are as follows: by maintaining a gap between the reinforcing rib and the conical vibration guide of the adjacent vibration transmission hole, a vibration wave propagation channel is formed, which avoids the interference and obstruction of the vibration diffusion function of the conical vibration guide by the reinforcing rib, so that the vibration wave diffused from the conical vibration guide can propagate freely through the gap. At the same time, the gap also provides a path for the mutual transmission of vibration waves between the reinforcing rib and the conical vibration guide, realizing the synergistic cooperation of the two vibration transmission structures, and enhancing the overall vibration transmission capacity and vibration uniformity of the sand drop plate.

[0016] Furthermore, the upper opening of the vibration transmission hole is circular, and the lower opening of the vibration transmission hole is elliptical, with the major axis of the ellipse parallel to the length direction of the sand drop plate body.

[0017] The beneficial effects of adopting the above-mentioned improved scheme are as follows: by designing the upper opening of the vibration transmission hole as a circle and the lower opening as an ellipse, and making the major axis of the ellipse parallel to the length direction of the sand drop plate body, an irregularly shaped channel structure is formed. This structure allows the vibration wave to be transmitted not only in the vertical direction when passing through the vibration transmission hole, but also to generate directional diffusion in the horizontal direction. In particular, the vibration propagation along the length direction of the sand drop plate body is strengthened. Combined with the matrix arrangement of vibration transmission holes, a longitudinal and transverse interwoven vibration transmission network is formed, which improves the coverage range and transmission efficiency of vibration energy.

[0018] Furthermore, mounting lugs are provided at the four corners of the sand drop plate body, the mounting lugs extend outward from the plane of the sand drop plate body, and a mounting through hole is provided at the geometric center of the mounting lugs for connecting the vibration device.

[0019] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by setting mounting lugs extending outward from the four corners of the sand-falling plate body, and opening mounting through holes at the geometric center of the mounting lugs for connecting the vibration device, a reliable fixed connection between the sand-falling plate and the vibration device is achieved. The symmetrical distribution of the four corners ensures the balanced transmission of vibration force to the sand-falling plate body, avoiding the problem of uneven vibration caused by eccentric connection points. At the same time, the outward extension structure of the mounting lugs makes the installation and maintenance of the vibration device more convenient, improving the practicality and maintainability of the equipment.

[0020] Furthermore, the angle between the conical surface of the conical vibration guide and the lower surface of the sand drop plate body is 30° to 60°.

[0021] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by limiting the angle between the conical surface of the conical vibration guide and the lower surface of the sand drop plate body to the range of 30° to 60°, the vibration wave diffusion angle is optimized and controlled. This angle range ensures that the vibration wave can effectively diffuse to the surrounding area, while avoiding the problem of excessive dispersion and weakening of vibration energy due to an excessively large diffusion angle. At the same time, the conical structure within this angle range has good mechanical properties and processability, making it easy to manufacture and use. It ensures the vibration transmission effect while taking into account the reliability and economy of the structure.

[0022] Furthermore, the sand-fall plate body is made of cast steel, and the reinforcing ribs are integrally cast with the sand-fall plate body.

[0023] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by using cast steel material to make the sand drop plate body and casting the reinforcing ribs integrally with the sand drop plate body, the cast steel material has good strength, toughness and impact resistance, and can withstand repeated impacts and loads in vibration sand drop operations. The integrally cast structure eliminates the weak links that may be generated by welding or mechanical connection, avoids the risk of loosening, breaking or fatigue failure of the connection parts during vibration, improves the reliability and service life of the overall structure of the sand drop plate, and at the same time, the casting process facilitates the formation of complex conical vibration guide parts and reinforcing rib structures, reducing manufacturing difficulty and cost.

[0024] Furthermore, the spacing between two adjacent rows of vibration transmission holes is greater than the spacing between two adjacent columns of vibration transmission holes, the reinforcing rib is located between two adjacent rows of vibration transmission holes, and the height of the reinforcing rib is 1.5 to 2.5 times the thickness of the sand-dropping plate body.

[0025] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by making the spacing between two adjacent rows of vibration transmission holes larger than the spacing between two adjacent columns of vibration transmission holes, and by placing the reinforcing ribs between two adjacent rows of vibration transmission holes, while controlling the height of the reinforcing ribs within the range of 1.5 to 2.5 times the thickness of the sand-drop plate body, a reasonable match between the distribution of vibration transmission holes and the arrangement of reinforcing ribs is achieved. The larger row spacing provides sufficient space for the setting of reinforcing ribs, enabling the reinforcing ribs to fully play the dual role of structural strengthening and vibration transmission. The appropriate height of the reinforcing ribs ensures sufficient structural strength and vibration transmission capacity, while avoiding excessively high reinforcing ribs that increase weight and manufacturing difficulty, thus achieving the best balance between structural performance and economy.

[0026] Compared with existing technologies, the beneficial effects of the multi-hole vibration transmission structure of the sand removal plate of the vibratory sand removal machine provided by this utility model are as follows: This utility model constructs a three-dimensional vibration transmission network by setting multiple vibration transmission holes penetrating the upper and lower surfaces of the sand removal plate body, and forming a downward-extending conical vibration guide at the edge of the opening of each vibration transmission hole. Combined with the trapezoidal cross-section reinforcing ribs set on the lower surface of the sand removal plate body, this fundamentally solves the technical problems of uneven vibration energy transmission and low transmission efficiency in existing technologies. It achieves multi-path propagation and omnidirectional diffusion of vibration waves within the sand removal plate. The vibration transmission holes guide the vibration energy from the upper surface to the lower surface and diffuse it to the surrounding area through the conical vibration guide. The reinforcing ribs extend along the length of the... The longitudinal propagation of the vibration wave is guided by both the guide and the guide, forming a crisscrossing vibration transmission system. This significantly improves the coverage and transmission efficiency of vibration energy, ensuring that sand molds and castings at all positions on the sand removal plate receive uniform and sufficient vibration. The sand removal effect is significantly improved, the sand removal operation time is shortened, and production efficiency is increased. At the same time, due to the efficient utilization of vibration energy, the output power requirements of the vibration device are reduced, energy consumption and equipment wear are reduced, and the service life of the equipment is extended. In addition, this utility model adopts an integrated casting structure design, eliminating weak links in the connection parts, improving the overall strength and reliability of the sand removal plate, reducing maintenance costs, and demonstrating significant technological progress and practical value. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of a porous vibration transmission structure for a vibratory sand removal plate of a vibratory sand removal machine;

[0029] Figure 2 A cross-sectional view of a porous vibration transmission structure of a vibratory sand removal plate in a vibratory sand removal machine;

[0030] Figure 3 A side view of a porous vibration transmission structure of a vibratory sand removal plate in a vibratory sand removal machine;

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Sand removal plate; 2. Vibration transmission hole; 3. Conical vibration guide. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0034] like Figures 1-3 The diagram shows a first embodiment of a porous vibration transmission structure for a vibratory sand removal machine's sand removal plate provided by this utility model. In this embodiment, the structure is used for sand removal operation of the vibratory sand removal machine and includes a sand removal plate body 1. The sand removal plate body is a rectangular plate structure. Multiple vibration transmission holes 2 are staggered along the length and width directions on the sand removal plate body. The vibration transmission holes penetrate the upper and lower surfaces of the sand removal plate body. The edge of the opening of the vibration transmission hole extends towards the lower surface of the sand removal plate body to form a conical vibration guide part 3. The conical surface of the conical vibration guide part forms an angle with the lower surface of the sand removal plate body. The conical vibration guide part is used to guide the vibration energy from the upper surface of the sand removal plate body to the lower surface and diffuse it to the surrounding area.

[0035] In the above technical solution, the vibration transmission holes are arranged in a matrix on the sand-dropping plate body, and the spacing between two adjacent vibration transmission holes is equal.

[0036] Furthermore, in the above technical solution, the conical surface of the conical vibration guide is in the shape of an outwardly expanding trumpet, and the maximum diameter of the conical vibration guide is located on the lower surface of the sand drop plate body.

[0037] Furthermore, in the above technical solution, the lower surface of the sand-drop plate body is provided with multiple reinforcing ribs. The reinforcing ribs extend along the length direction of the sand-drop plate body, and the reinforcing ribs have a trapezoidal cross-sectional structure. The bottom edge of the reinforcing ribs is fixedly connected to the lower surface of the sand-drop plate body.

[0038] Furthermore, in the above technical solution, a gap is maintained between the reinforcing rib and the tapered vibration guide of the adjacent vibration transmission hole, and the gap forms a vibration wave propagation channel.

[0039] Furthermore, in the above technical solution, the upper opening of the vibration transmission hole is circular, and the lower opening of the vibration transmission hole is elliptical, with the major axis of the ellipse parallel to the length direction of the sand drop plate body.

[0040] Furthermore, in the above technical solution, mounting lugs are provided at the four corners of the sand drop plate body, the mounting lugs extend outward from the plane of the sand drop plate body, and a mounting through hole is opened at the geometric center of the mounting lugs for connecting the vibration device.

[0041] Furthermore, in the above technical solution, the included angle between the conical surface of the conical vibration guide and the lower surface of the sand drop plate body is 30° to 60°.

[0042] Furthermore, in the above technical solution, the sand-falling plate body is made of cast steel, and the reinforcing ribs are integrally cast with the sand-falling plate body.

[0043] Furthermore, in the above technical solution, the spacing between two adjacent rows of vibration transmission holes is greater than the spacing between two adjacent columns of vibration transmission holes, and the reinforcing ribs are set between two adjacent rows of vibration transmission holes. The height of the reinforcing ribs is 1.5 to 2.5 times the thickness of the sand-dropping plate body.

[0044] The following is a specific embodiment 1 of this utility model. In this embodiment, the sand-transmitting plate of the vibrating sand-transmitting machine has a multi-hole vibration transmission structure. The sand-transmitting plate body is made of ZG270-500 cast steel material and is integrally formed by sand casting process. The overall external dimensions of the sand-transmitting plate body are 1200mm in length, 800mm in width, and 25mm in thickness, forming a regular rectangular plate structure. There are 8 rows evenly distributed along the length direction and 6 columns evenly distributed along the width direction on the plane of the sand-transmitting plate body, totaling 48 vibration transmission holes. These vibration transmission holes are arranged in a matrix. The center distance between two adjacent rows of vibration transmission holes is 150mm, and the center distance between two adjacent columns of vibration transmission holes is 130mm. The upper opening of each vibration transmission hole is circular and straight. The diameter is 40mm, and the lower opening is elliptical. The major axis of the ellipse is 60mm, and the minor axis is 45mm. The direction of the major axis of the ellipse is parallel to the length direction of the sand-dropping plate body. The vibration transmission hole has a tapered structure that gradually expands from the upper opening to the lower opening. A tapered vibration guide extends from the edge of the vibration transmission hole towards the lower surface of the sand-dropping plate body to form a tapered vibration guide. The tapered surface of the tapered vibration guide is a smooth curved surface, and the angle between the tapered surface and the lower surface of the sand-dropping plate body is 45°. The maximum diameter of the tapered vibration guide is located on the lower surface of the sand-dropping plate body and is tangent to the edge of the elliptical lower opening. Seven reinforcing ribs are arranged along the length direction on the lower surface of the sand-dropping plate body. The reinforcing ribs are located in the middle position between two adjacent rows of vibration transmission holes, and each reinforcing rib is 1150mm long. The device has a height of 60mm and a trapezoidal cross-section with an upper base width of 15mm and a lower base width of 30mm. The angle between the two sides of the reinforcing rib and the lower surface of the sand-drop plate body is 75°. The reinforcing rib and the sand-drop plate body are integrally cast and firmly connected. A 20mm gap is maintained between the reinforcing rib and the adjacent conical vibration guide, forming a vibration wave propagation channel. Mounting lugs are cast at the four corners of the sand-drop plate body, extending 50mm outwards from the plane of the sand-drop plate body. The mounting lugs are 30mm thick and 80mm wide. A 22mm diameter circular mounting through hole is provided at the geometric center of each mounting lug for an M20 bolt to pass through and connect to the vibration device. The overall weight of the sand-fall plate is approximately 180 kg. After casting, the sand-fall plate undergoes sandblasting to remove surface oxide scale, followed by annealing heat treatment to eliminate casting stress and improve the material's toughness and fatigue resistance. Finally, the surface of the reinforcing ribs is mechanically ground to remove burrs and sharp edges, resulting in a smooth and flat surface. In use, the sand-fall plate is mounted on a vibratory sand-falling machine. The vibration force generated by the vibration device is evenly transmitted to the sand-fall plate body through four mounting lugs. The vibration waves form a dense vibration radiation network on the sand-fall plate through 48 vibration transmission holes and their conical vibration guides. Combined with the longitudinal vibration transmission of the seven reinforcing ribs, this achieves comprehensive coverage and efficient transmission of vibration energy. The sand mold breaks rapidly under uniform and intense vibration.The sand falls smoothly through the vibration transmission holes, significantly improving sand removal efficiency. The time for a single sand removal operation is reduced to about 60% of that of traditional sand removal boards, and energy consumption is reduced by about 30%. Long-term use has proven that the service life of this sand removal board is more than 40% longer than that of traditional sand removal boards, demonstrating excellent economic benefits and practical value.

[0045] The following is another specific embodiment 2 of this utility model. Embodiment 2 is based on Embodiment 1, but with optimization and improvement of the structure of the conical vibration guide. The conical surface of the conical vibration guide is designed as a stepped conical surface structure. Specifically, three concentric circular annular steps are arranged radially on the conical surface of the conical vibration guide. Each step has a height of 5mm and a width of 8mm. The surface of the step is parallel to the horizontal plane, and adjacent steps are connected by an inclined plane with an inclination angle of 50°. This stepped conical surface structure causes multiple reflections and refractions of the vibration wave when it passes through the conical vibration guide. The vibration energy is redistributed and enhanced at each step, further improving the diffusion and transmission efficiency of the vibration wave. At the same time, the stepped structure increases the contact area between the conical vibration guide and the air, which is beneficial to the transmission of the vibration wave to the surrounding medium. In actual use, this improved structure increases the sand removal efficiency by about 15% compared with Example 1. The sand removal effect is more obvious, especially for sand molds with high compactness. In addition, the stepped structure is easy to cast and can be achieved by setting the corresponding core in the casting mold without increasing the manufacturing difficulty and cost. It has good practicality and promotion value.

[0046] The following is another specific embodiment 3 of this utility model. Embodiment 3 improves upon Embodiment 1 by modifying the arrangement of the reinforcing ribs. In addition to the original seven longitudinal reinforcing ribs, five transverse reinforcing ribs are added. These transverse reinforcing ribs extend along the width of the sand-drop plate body and are located in the middle between two adjacent rows of vibration transmission holes. The cross-sectional shape and dimensions of the transverse reinforcing ribs are the same as those of the longitudinal reinforcing ribs, with a height of 60mm and a trapezoidal cross-section. The longitudinal and transverse reinforcing ribs form a grid-like reinforcing rib structure on the lower surface of the sand-drop plate body. The intersections of the longitudinal and transverse reinforcing ribs are connected by interlocking. Specifically, grooves with a width of 30mm and a depth of 30mm are opened at corresponding positions on the longitudinal reinforcing ribs. The ribs extend upwards by 30mm at the corresponding positions, forming protrusions that are embedded in the grooves of the longitudinal reinforcing ribs. The two interlock tightly, and the whole is still cast as a single piece. This grid-shaped reinforcing rib structure greatly improves the overall rigidity of the sand-dropping plate, reducing the deformation of the sand-dropping plate when bearing heavy sand molds and castings to less than 50% of the original. At the same time, the grid-shaped structure provides a crisscrossing multi-directional transmission path for vibration waves, allowing vibration energy to propagate simultaneously in both longitudinal and transverse directions. Combined with the radiation diffusion of the vibration transmission holes, a denser and more uniform vibration energy field is formed. In practical applications, this structure is particularly suitable for large-scale heavy-duty sand-dropping operations, capable of bearing large sand molds weighing over 500kg while maintaining excellent vibration transmission effect and sand-dropping efficiency.

[0047] Specifically, the principle of this utility model is as follows: The core of this utility model lies in the special design of a porous vibration transmission structure, which enables multi-path propagation and efficient diffusion of vibration energy within the sand-dropping plate. This solves the technical problems of uneven and inefficient vibration transmission in existing technologies. Specifically, multiple vibration transmission holes penetrating the sand-dropping plate body form vertical transmission channels for vibration waves. When vibration force acts on the upper surface of the sand-dropping plate body, the vibration wave not only propagates along the plate surface but also rapidly penetrates the sand-dropping plate body vertically through the vibration transmission holes, reaching the lower surface. The conical vibration guide formed at the edge of the vibration transmission holes acts as a vibration wave amplifier and diffuser. The trumpet-shaped conical structure of the conical vibration guide allows the vibration wave to gradually diffuse from a smaller upper opening to a larger lower opening when passing through the vibration transmission holes. Under the guidance of the conical surface, the vibration energy radiates and diffuses to the surrounding area, forming a vibration radiation area centered on each vibration transmission hole. The matrix distribution of multiple vibration transmission holes on the sand-dropping plate body causes these vibration radiation areas to overlap and cover each other, forming a comprehensive and uniform vibration energy field, eliminating blind spots and weak points in vibration transmission. The reinforcing ribs on the lower surface of the sand-drop plate not only provide structural support but, more importantly, act as waveguides for vibration waves. They guide vibration energy along the extension direction of the ribs for long-distance propagation, rapidly transferring energy from the corner joints to the central area of ​​the sand-drop plate. The gap between the reinforcing ribs and the vibration transmission holes forms an exchange channel for vibration waves, allowing longitudinal vibration waves propagating along the ribs and transverse vibration waves diffused from the conical guide to couple, forming a three-dimensional, interwoven vibration transmission network. This multi-dimensional vibration transmission mechanism significantly improves the utilization efficiency of vibration energy, ensuring sufficient and uniform vibration at every location on the sand-drop plate. The irregular upper and lower designs of the vibration transmission holes further enhance the directional diffusion effect of vibration waves. The circular upper opening ensures uniform input of vibration waves, while the elliptical lower opening enhances the diffusion capability of vibration waves in a specific direction. Combined with the overall matrix layout, this creates a coordinated vibration transmission pattern. Furthermore, the rational setting of the cone angle of the conical guide ensures the optimal angle for vibration wave diffusion, avoiding excessive energy dispersion or concentration and maximizing vibration transmission efficiency.

[0048] The specific operation or use method of this utility model is as follows: First, the multi-hole vibration transmission structure of the sand-removing plate of this utility model is fixedly connected to the vibration device of the vibrating sand-removing machine through the mounting through holes on the mounting lugs at the four corners. Bolts are used to firmly install the sand-removing plate body at the output end of the vibration device through the mounting through holes, ensuring that the tightening force of the four connection points is uniform and avoiding loosening or skewing. After installation, the sand mold and casting to be removed are placed on the upper surface of the sand-removing plate body, with the bottom of the sand mold in full contact with the upper surface of the sand-removing plate body. The vibration device is started to generate periodic vibration force. The vibration force is evenly transmitted to the sand-removing plate body through the four mounting lugs. The vibration wave diffuses from the corners of the sand-removing plate body to the center, and at the same time quickly penetrates through multiple vibration transmission holes. The sand-falling plate body, guided and diffused by the conical vibration guide, generates vibration energy that radiates and diffuses at multiple points on its lower surface. Combined with the longitudinal guidance of the reinforcing ribs, a uniform and intense vibration energy field is established across the entire sand-falling plate body. Under continuous vibration, the sand mold gradually breaks down, and the sand falls off the casting surface and into the collection device below through the vibration transmission holes. During vibration, the operator adjusts the frequency and amplitude of the vibration device according to the size of the sand mold and the compactness of the sand to ensure optimal sand-falling effect. Once the sand on the casting surface is observed to be mostly removed, the vibration device is stopped, and the casting is removed for subsequent cleaning and inspection. The entire operation is simple and efficient. Due to the uniformity and efficiency of vibration transmission, the sand-falling time is significantly shortened, and production efficiency is significantly improved.

Claims

1. A multi-hole vibration transmission structure for a vibratory sand removal machine's sand removal plate, used for sand removal operation of the vibratory sand removal machine, comprising a sand removal plate body, the sand removal plate body being a rectangular plate structure, wherein a plurality of vibration transmission holes are staggered along the length and width directions on the sand removal plate body, the vibration transmission holes penetrating the upper and lower surfaces of the sand removal plate body, characterized in that, The edge of the vibration transmission hole extends toward the lower surface of the sand drop plate body to form a conical vibration guide. The conical surface of the conical vibration guide forms an angle with the lower surface of the sand drop plate body. The conical vibration guide is used to guide the vibration energy from the upper surface of the sand drop plate body to the lower surface and diffuse it to the surrounding area.

2. The porous vibration transmission structure of the sand removal plate of a vibratory sand removal machine according to claim 1, characterized in that, The vibration transmission holes are arranged in a matrix on the sand-falling plate body, and the spacing between two adjacent vibration transmission holes is equal.

3. The porous vibration transmission structure of the sand removal plate of a vibratory sand removal machine according to claim 2, characterized in that, The conical surface of the conical vibration guide is shaped like an outwardly expanding trumpet, and the maximum diameter of the conical vibration guide is located on the lower surface of the sand drop plate body.

4. The porous vibration transmission structure of the sand removal plate of a vibratory sand removal machine according to claim 3, characterized in that, The lower surface of the sand-dropping plate body is provided with multiple reinforcing ribs, which extend along the length of the sand-dropping plate body. The reinforcing ribs have a trapezoidal cross-section structure, and the bottom edge of the reinforcing ribs is fixedly connected to the lower surface of the sand-dropping plate body.

5. The porous vibration transmission structure of the sand removal plate of a vibrating sand removal machine according to claim 4, characterized in that, The reinforcing rib maintains a gap with the tapered vibration guide of the adjacent vibration conduction hole, and the gap forms a vibration wave propagation channel.

6. The porous vibration transmission structure of the sand removal plate of a vibrating sand removal machine according to claim 5, characterized in that, The upper opening of the vibration transmission hole is circular, and the lower opening of the vibration transmission hole is elliptical. The major axis of the ellipse is parallel to the length direction of the sand drop plate body.

7. The porous vibration transmission structure of the sand removal plate of a vibrating sand removal machine according to claim 6, characterized in that, The sand-falling plate body has mounting lugs at its four corners, which extend outward from the plane of the sand-falling plate body. A mounting through hole is provided at the geometric center of the mounting lug for connecting a vibration device.

8. The porous vibration transmission structure of the sand removal plate of a vibratory sand removal machine according to claim 7, characterized in that, The angle between the conical surface of the conical vibration guide and the lower surface of the sand drop plate body is 30° to 60°.

9. The porous vibration transmission structure of the sand removal plate of a vibratory sand removal machine according to claim 8, characterized in that, The sand drop plate body is made of cast steel, and the reinforcing ribs are integrally cast with the sand drop plate body.

10. The porous vibration transmission structure of the sand removal plate of a vibratory sand removal machine according to claim 9, characterized in that, The spacing between two adjacent rows of vibration transmission holes is greater than the spacing between two adjacent columns of vibration transmission holes. The reinforcing rib is located between two adjacent rows of vibration transmission holes, and the height of the reinforcing rib is 1.5 to 2.5 times the thickness of the sand-dropping plate body.

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