High-density forming device for precast concrete components based on bidirectional rotational composite vibration.

Abstract

This invention relates to the field of vibration equipment technology, specifically to a high-density molding device for precast concrete components based on bidirectional rotational composite vibration. The device includes a housing with two symmetrically arranged upper mounting cavities along an axis on its circumferential surface and a lower mounting cavity at its bottom. Each upper mounting cavity contains an upper eccentric disc capable of vertical rotation, and each lower mounting cavity contains a lower eccentric disc capable of horizontal rotation. An upper transmission rod, a lower transmission rod, and a drive motor are disposed within the housing. The upper transmission rod extends laterally through the two upper mounting cavities and is connected to the two upper eccentric discs. The drive motor is connected to both the upper and lower transmission rods. The drive motor, located within the housing, can drive the upper eccentric discs within the housing to rotate longitudinally and the lower eccentric discs to rotate horizontally, thus solving the problem that existing vibration mechanisms only generate horizontal excitation force in a single direction, which has significant limitations.

Description

Technical Field

[0001] This invention relates to the field of vibration equipment technology, specifically to a high-density molding device for precast concrete components based on bidirectional rotational composite vibration. Background Technology

[0002] In the production of precast concrete components, traditional unidirectional vibration or compaction methods have significant limitations: First, the excitation force in a single direction is insufficient to achieve a three-dimensional uniform distribution of the concrete slurry, easily leading to inadequate filling at the corners of the mold, resulting in defects such as air pockets and honeycomb voids; second, during vibration, the slurry is prone to stratification, with aggregate settling and slurry floating, especially noticeable in high-flowability concrete; third, for areas with dense reinforcement or irregularly shaped components, traditional vibration methods often create compaction blind spots, causing localized loosening problems. These defects not only reduce the appearance quality of the precast components but also directly affect their mechanical properties and durability.

[0003] Patent document publication number CN113305978B discloses an inner mold vibration mechanism for a concrete component vibration table, including a vibrator body, which is supported by a flexible mounting frame. The eccentric oscillator of the vibrator rotates to generate a horizontal vibration force. The outer wall of the vibrator body is provided with a vibration transmission mechanism for contacting and connecting with the inner mold. There is at least one set of vibration transmission mechanisms, and each set of vibration transmission mechanisms includes at least one fixed contact and at least one telescopic contact, or includes at least two telescopic contact.

[0004] This vibration mechanism relies on the rotation of an eccentric oscillator to generate a horizontal excitation force in a single direction, which has significant limitations: First, the unidirectional vibration mode makes it difficult to achieve a three-dimensional uniform distribution of concrete slurry, resulting in insufficient filling of the mold corners and corners, and easily causing defects such as air holes and delamination; Second, the mechanical structure with fixed frequency and amplitude cannot adapt to the compaction requirements of concrete with different mix proportions, affecting the segregation resistance of high-flow concrete and the compaction effect of dry-hard concrete, and the amplitude cannot be adjusted in real time according to the needs during vibration. Summary of the Invention

[0005] To address the problems existing in the prior art, a high-density molding device for precast concrete components based on bidirectional rotational composite vibration is provided. Through a drive motor installed in the housing, the upper eccentric disk installed in the housing can be driven to rotate longitudinally, and the lower eccentric disk can be driven to rotate horizontally. This solves the problem that the existing vibration mechanism only generates horizontal excitation force in a single direction and cannot adjust the amplitude in real time.

[0006] To address the problems of existing technologies, this invention provides a high-density molding device for precast concrete components based on bidirectional rotary composite vibration compaction. The device includes a housing with two upper mounting cavities symmetrically arranged along an axis on its circumferential surface and a lower mounting cavity at its bottom. Each upper mounting cavity contains an upper eccentric disc capable of rotating vertically, and each lower mounting cavity contains a lower eccentric disc capable of rotating horizontally. The housing contains an upper transmission rod, a lower transmission rod, and a drive motor. The upper transmission rod extends laterally through the two upper mounting cavities and is connected to the two upper eccentric discs. The drive motor is connected to both the upper and lower transmission rods.

[0007] The inner walls of the upper and lower mounting cavities are conical. The upper eccentric disk can move radially along the upper transmission rod, and the lower eccentric disk can move radially along the lower transmission rod. An upper adjuster is provided in the housing and is drivenly connected to the upper eccentric disk. The upper adjuster is used to adjust the axial position of the upper eccentric disk in the upper mounting cavity. A lower adjuster is provided at the bottom of the housing and is drivenly connected to the lower eccentric disk. The lower adjuster is used to adjust the axial position of the lower eccentric disk in the lower mounting cavity.

[0008] Preferably, the upper eccentric disk is provided with an upper guide groove extending along the line connecting its rotation center and the mass eccentricity point, an upper guide block is provided in the upper guide groove, the upper transmission rod passes through the upper guide block and forms a spline connection with it, and the upper adjuster is rotatably connected to the upper guide block.

[0009] Preferably, the lower eccentric disk is provided with a lower guide groove extending along the line connecting its rotation center and the mass eccentricity point, a lower guide block is provided in the lower guide groove, the lower transmission rod passes through the lower guide block and forms a spline connection with it, and the lower adjuster is rotatably connected to the lower guide block.

[0010] Preferably, an upper elastic element is provided between the upper guide block and the bottom of the upper guide groove, and the eccentric end of the upper eccentric disk elastically abuts against the inner wall of the upper mounting cavity.

[0011] Preferably, a lower elastic element is provided between the lower guide block and the bottom of the lower guide groove, and the mass eccentric end of the lower eccentric disk elastically abuts against the inner wall of the lower mounting cavity.

[0012] Preferably, the upper regulator includes an upper connecting rod, an upper linear push cylinder, and a connecting rod. The upper connecting rod extends laterally through the machine housing. One end of the upper connecting rod is provided with an outer connecting plate that is rotatably connected to the upper guide block, and the other end of the upper connecting rod is provided with an inner connecting plate. The upper linear push cylinder is disposed in the machine housing, and both ends of the connecting rod are rotatably connected to the output rod of the upper linear push cylinder and the inner connecting plate, respectively.

[0013] Preferably, the lower regulator includes a lower connecting rod and a lower linear push cylinder. The lower connecting rod slides longitudinally through the bottom end of the machine housing. The top end of the lower connecting rod is provided with an upper connecting plate that is rotatably connected to the lower guide block. The bottom end of the lower connecting rod is provided with a lower connecting plate. The lower linear push cylinder is located at the bottom of the machine housing, and the output rod of the lower linear push cylinder is connected to the lower connecting plate.

[0014] Preferably, the upper eccentric disc has an upper roller at the contact end with the inner wall of the upper mounting cavity, and the lower eccentric disc has a lower roller at the contact end with the inner wall of the lower mounting cavity.

[0015] The advantages of this application compared to the prior art are:

[0016] In this application, a drive motor integrated within the housing allows for independent control of the upper eccentric disk's longitudinal rotation (generating vertical excitation force) and the lower eccentric disk's horizontal rotation (generating horizontal excitation force), thus achieving the synthesis of spatial vector vibration. This multi-directional coupled excitation mechanism effectively overcomes the inherent defects of traditional unidirectional vibration systems: the vertical vibration component promotes uniform settlement of concrete slurry in the mold depth direction, while the horizontal vibration component optimizes lateral flow and filling. The dynamic superposition of the two components eliminates blind spots in conventional compaction processes, ensuring sufficient compaction at the corners of irregularly shaped components and areas with dense reinforcement. Furthermore, by adjusting the rotational speed ratio and phase difference of the two eccentric disks, the compaction requirements of different concrete mix proportions (self-compacting concrete / dry-hard concrete) and structural components (solid slabs / hollow beams) can be flexibly matched.

[0017] This application also uses upper and lower adjusters to regulate the rotation axis positions of the upper and lower eccentric disks, respectively. By changing the rotation axis (i.e., adjusting the relative position of the rotation center and the mass eccentricity point), the amplitude of the vibration system can be dynamically adjusted. The amplitude can be adjusted in real time without replacing hardware, making it suitable for scenarios requiring frequent changes in vibration intensity (such as vibrating screens for different particle materials). The amplitude is reduced under low load to decrease energy consumption, while the amplitude is increased under high load to improve working efficiency. Attached Figure Description

[0018] Figure 1 This is a perspective view of the high-density molding device for precast concrete components based on bidirectional rotational composite vibration of the present invention.

[0019] Figure 2 This is a three-dimensional sectional view of the high-density molding device for precast concrete components based on bidirectional rotational composite vibration of the present invention.

[0020] Figure 3 This is a cross-sectional view of the high-density molding device for precast concrete components based on bidirectional rotational composite vibration of the present invention.

[0021] Figure 4 yes Figure 3A magnified view of part A.

[0022] Figure 5 yes Figure 3 A magnified view of section B.

[0023] Figure 6 This is a partial exploded perspective view of the high-density molding device for precast concrete components based on bidirectional rotational composite vibration of the present invention.

[0024] Figure 7 This is a schematic diagram of the internal structure of the high-density molding device for precast concrete components based on bidirectional rotational composite vibration of the present invention.

[0025] Figure 8 yes Figure 7 A magnified view of a portion of point C.

[0026] Figure 9 yes Figure 7 A magnified view of a portion of point D.

[0027] Figure 10 yes Figure 7 A magnified view of a portion at point E.

[0028] The diagram is labeled as follows: 1. Housing; 11. Upper mounting cavity; 12. Lower mounting cavity; 21. Upper eccentric disc; 211. Upper guide block; 212. Upper elastic element; 22. Lower eccentric disc; 221. Lower guide block; 222. Lower elastic element; 23. Upper roller; 24. Lower roller; 31. Upper transmission rod; 311. Driven bevel gear; 32. Lower transmission rod; 33. Drive motor; 331. Driven bevel gear; 4. Upper adjuster; 41. Upper connecting rod; 411. Outer connecting plate; 412. Inner connecting plate; 42. Upper linear push cylinder; 43. Connecting rod; 5. Lower adjuster; 51. Lower connecting rod; 511. Upper connecting plate; 512. Lower connecting plate; 52. Lower linear push cylinder. Detailed Implementation

[0029] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1 , Figure 2 and Figure 3As shown, a high-density precast concrete component forming device based on bidirectional rotational composite vibration compaction includes a housing 1. Two upper mounting cavities 11 are symmetrically arranged along the axis on the circumferential surface of the housing 1, and a lower mounting cavity 12 is arranged at the bottom of the housing 1. An upper eccentric disk 21 capable of rotating in the vertical direction is arranged in the upper mounting cavity 11, and a lower eccentric disk 22 capable of rotating in the horizontal direction is arranged in the lower mounting cavity 12. An upper transmission rod 31, a lower transmission rod 32, and a drive motor 33 are arranged inside the housing 1. The upper transmission rod 31 passes through the two upper mounting cavities 11 laterally and is connected to the two upper eccentric disks. The drive motor 33 is connected to the upper transmission rod 31 and the lower transmission rod 32.

[0031] Driven by a motor 33 installed within the housing 1, the upper eccentric disc 21 and the lower eccentric disc 22 can rotate simultaneously but in different directions. The vertical rotation of the upper eccentric disc 21 generates a vertical vibration force, which helps to evenly distribute the concrete material within the mold along the vertical axis and eliminate air bubbles in the upper part of the concrete. Simultaneously, the horizontal rotation of the lower eccentric disc 22 generates a horizontal vibration force. This horizontal force further enhances the fluidity of the concrete within the mold, allowing the concrete to more fully fill all corners of the mold and promoting the expulsion of air bubbles trapped in the middle and lower parts of the concrete. Driven by the motor 33 through a transmission rod, the upper eccentric disc 21 and the lower eccentric disc 22 work together to achieve a bidirectional rotational composite compaction function. This significantly improves the density of the precast concrete components, ensuring higher quality, superior mechanical properties, and durability during production.

[0032] In application, the molding device is matched with the mold and the mold fixing system. The mold fixing system consists of an elastic clamping mechanism and a pneumatic fine adjustment device, which can adaptively adjust the clamping force according to the mold specifications to prevent mold displacement or deformation.

[0033] When in use, the concrete slurry is first poured into the mold, and the mold is clamped and positioned by the mold fixing system; the lower eccentric plate 22 rotates horizontally and vibrates evenly; the upper eccentric plate 21 vibrates at high frequency along the longitudinal direction to improve the density, eliminate air bubbles, and improve the interface bonding force.

[0034] like Figure 2 and Figure 3 As shown, the drive motor 33 is a dual-axis motor. The drive motor 33 is arranged longitudinally in the housing 1. The output shaft at the top of the drive motor 33 is provided with a driving bevel gear 331. The upper transmission rod 31 is provided with a driven bevel gear 311 that meshes with the driving bevel gear 331. The output shaft at the bottom of the drive motor 33 is connected to the lower transmission rod 32 for transmission.

[0035] A driving bevel gear 331 is mounted on the output shaft at the top of the drive motor 33. A driven bevel gear 311, meshing with the driving bevel gear 331, is also mounted on the upper transmission rod 31. When the drive motor 33 starts, the top output shaft drives the driving bevel gear 331 to rotate. Through meshing with the driven bevel gear 311, the driving bevel gear 331 smoothly and efficiently transmits power to the upper transmission rod 31. The upper transmission rod 31 extends laterally through the two upper mounting cavities 11 and is connected to the two upper eccentric discs 21, thereby driving the upper eccentric discs 21 to rotate vertically, achieving a vertical vibration compaction function.

[0036] The output shaft at the bottom of the drive motor 33 is connected to the lower transmission rod 32. Through this connection, the drive motor 33 transmits power to the lower transmission rod 32, thereby driving the lower eccentric disk 22 to rotate in the horizontal direction, achieving the horizontal vibration function.

[0037] like Figure 4 , Figure 5 and Figure 6 As shown, the inner walls of the upper mounting cavity 11 and the lower mounting cavity 12 are conical. The upper eccentric disk 21 can move radially along the upper transmission rod 31, and the lower eccentric disk 22 can move radially along the lower transmission rod 32. An upper adjuster 4 is provided in the housing 1 and is pulverizedly connected to the upper eccentric disk 21. The upper adjuster 4 is used to adjust the axial position of the upper eccentric disk 21 in the upper mounting cavity 11. A lower adjuster 5 is provided at the bottom of the housing 1 and is pulverizedly connected to the lower eccentric disk 22. The lower adjuster 5 is used to adjust the axial position of the lower eccentric disk 22 in the lower mounting cavity 12.

[0038] Inside the housing 1, there is an upper adjuster 4 that is drivenly connected to the upper eccentric disc 21. The upper adjuster 4 is used to adjust the axial position of the upper eccentric disc 21 within the upper mounting cavity 11. By controlling the axial position of the upper eccentric disc 21, the intensity and range of the vertical vibration force generated by its rotation can be effectively controlled. For example, when processing precast concrete components of different sizes, or when the upper part of the concrete has specific density requirements, the operator can use the upper adjuster 4 to adjust the position of the upper eccentric disc 21, thereby adjusting the rotation axis of the upper eccentric disc 21. If a certain area of ​​the upper part of the concrete requires stronger vibration force, the upper eccentric disc 21 can be adjusted to a position closer to that area, thereby enhancing the vibration effect.

[0039] At the bottom of the housing 1, a lower adjuster 5 is installed, which is drivenly connected to the lower eccentric disc 22. The lower adjuster 5 is used to adjust the axial position of the lower eccentric disc 22 within the lower mounting cavity 12. Similar to the upper adjuster 4, the lower adjuster 5 can fine-tune the horizontal vibration force generated by the rotation of the lower eccentric disc 22, thereby adjusting the rotation axis of the lower eccentric disc 22. This allows the device to adapt to various concrete pouring scenarios and meet different requirements for horizontal concrete distribution and compaction. For example, when the mold shape is complex, or when there are specific areas in the middle and lower parts of the concrete that require stronger vibration to ensure better filling and air bubble removal, the axial position of the lower eccentric disc 22 can be changed by adjusting the lower adjuster 5, thereby optimizing the horizontal vibration effect. The conical inner wall of the mounting cavity, combined with the adjustable axial position of the eccentric disc, works synergistically to provide high flexibility and adaptability in the high-density molding process of precast concrete components, ultimately contributing to the production of high-quality precast concrete components with uniform density and excellent mechanical properties.

[0040] like Figure 4 , Figure 7 and Figure 8 As shown, the upper eccentric disk 21 is provided with an upper guide groove extending along the line connecting its rotation center and the mass eccentric point. An upper guide block 211 is provided in the upper guide groove. The upper transmission rod 31 passes through the upper guide block 211 and forms a spline connection with it. The upper adjuster 4 is rotatably connected to the upper guide block 211.

[0041] The upper transmission rod 31 passes through the upper guide block 211 and forms a spline connection with it. This spline connection not only ensures that the upper transmission rod 31 smoothly transmits power to the upper guide block 211, thereby driving the upper eccentric disk 21 to rotate, but also allows the upper eccentric disk 21 to move smoothly along the radial direction of the upper transmission rod 31. This allows the upper eccentric disk 21 to adjust its position on the upper transmission rod 31 according to actual needs. Because the upper eccentric disk 21 always abuts against the conical surface of the upper mounting cavity 11 when the upper transmission rod 31 rotates, under the action of centrifugal force, the distance between the mass eccentric point of the upper eccentric disk 21 and its rotation axis can be adjusted, thereby changing the range and intensity of the longitudinal vibration force.

[0042] like Figure 5 and Figure 10 As shown, the lower eccentric disk 22 is provided with a lower guide groove extending along the line connecting its rotation center and the mass eccentric point. A lower guide block 221 is provided in the lower guide groove. The lower transmission rod 32 passes through the lower guide block 221 and forms a spline connection with it. The lower adjuster 5 is rotatably connected to the lower guide block 221.

[0043] The lower drive rod 32 passes through the lower guide block 221 and forms a spline connection with it. This spline connection ensures that the lower drive rod 32 smoothly transmits power to the lower guide block 221, thereby driving the lower eccentric disk 22 to rotate. This smooth power transmission ensures that the lower eccentric disk 22 can continuously and stably generate vibration force. Furthermore, the spline connection also allows the lower eccentric disk 22 to move radially along the lower drive rod 32. This characteristic allows the lower eccentric disk 22 to flexibly adjust its position and rotation axis on the lower drive rod 32 according to actual production needs, thereby changing the range and intensity of the vibration force.

[0044] like Figure 4 and Figure 8 As shown, an upper elastic element 212 is provided between the upper guide block 211 and the bottom of the upper guide groove, and the mass eccentric end of the upper eccentric disk 21 elastically abuts against the inner wall of the upper mounting cavity 11.

[0045] When the upper transmission rod 31 drives the upper guide block 211 and the upper eccentric disk 21 to rotate, the upper eccentric disk 21 will experience periodic changes in centrifugal force due to mass eccentricity. These changes in centrifugal force cause the upper guide block 211 to generate certain impacts and vibrations during its movement. The upper elastic element 212 can effectively absorb and buffer these impacts and vibrations. Through its own elastic deformation, it converts the instantaneous impact force into elastic potential energy, stores it, and then slowly releases it, thereby greatly reducing the rigid collisions and wear between the upper guide block 211 and the upper guide groove. This not only extends the service life of the upper guide block 211 and the upper guide groove but also ensures the smoothness of the movement of the upper eccentric disk 21.

[0046] When the upper eccentric disk 21 shifts position during rotation due to various factors (such as the inhomogeneity of concrete materials, vibration of the device, etc.), the elastic abutment can automatically adjust the position of the upper eccentric disk 21, ensuring that it always maintains effective contact with the inner wall of the upper mounting cavity 11. At the same time, the elastic abutment can also absorb some of the impact force generated by the position shift, preventing the upper eccentric disk 21 from rigidly colliding with the inner wall of the upper mounting cavity 11 and reducing the risk of damage to the device.

[0047] like Figure 5 and Figure 10 As shown, a lower elastic element 222 is provided between the lower guide block 221 and the bottom of the lower guide groove, and the mass eccentric end of the lower eccentric disk 22 elastically abuts against the inner wall of the lower mounting cavity 12.

[0048] When the drive motor 33 drives the lower guide block 221 and the lower eccentric disk 22 to rotate via the lower transmission rod 32, the lower eccentric disk 22, due to its eccentric mass, will generate a periodically changing centrifugal force during rotation. This fluctuation in centrifugal force will cause the lower guide block 221 to experience impact and vibration during movement. The lower elastic element 222, through its own elastic deformation, converts the instantaneous impact force into elastic potential energy, stores it, and then slowly releases it. In this way, the rigid collision and wear between the lower guide block 221 and the lower guide groove are greatly reduced, not only extending their service life but also ensuring the smooth movement of the lower eccentric disk 22.

[0049] The eccentric end of the lower eccentric disc 22 elastically abuts against the inner wall of the lower mounting cavity 12. This elastic abutment ensures that the lower eccentric disc 22 maintains good contact with the inner wall of the lower mounting cavity 12 during rotation, allowing the vibration force generated by the rotation of the lower eccentric disc 22 to be efficiently transmitted to the housing 1 and the concrete material within the mold. Due to its eccentric mass, the lower eccentric disc 22 generates a centrifugal force pointing towards the eccentric end during rotation. Through the elastic abutment, this centrifugal force can directly act on the inner wall of the lower mounting cavity 12, thereby transmitting it to the entire device and the concrete, enhancing the horizontal compaction effect.

[0050] like Figure 4 and Figure 9 As shown, the upper regulator 4 includes an upper connecting rod 41, an upper linear push cylinder 42, and a connecting rod 43. The upper connecting rod 41 extends laterally through the housing 1. One end of the upper connecting rod 41 is provided with an outer connecting plate 411 that is rotatably connected to the upper guide block 211. The other end of the upper connecting rod 41 is provided with an inner connecting plate 412. The upper linear push cylinder 42 is disposed in the housing 1. The two ends of the connecting rod 43 are rotatably connected to the output rod of the upper linear push cylinder 42 and the inner connecting plate 412, respectively.

[0051] The upper connecting rod 41 extends laterally through the housing 1, a layout that allows for an effective connection channel between the inside and outside of the housing 1. An outer connecting plate 411 at one end is rotatably connected to the upper guide block 211, ensuring that the upper connecting rod 41 can drive the upper guide block 211 to move on the upper transmission rod 31 via the outer connecting plate 411. When the position of the upper eccentric disc 21 needs adjustment, the upper connecting rod 41 can smoothly transmit the force from the upper linear push cylinder 42 to the upper guide block 211, thereby driving the upper eccentric disc 21 to move. The inner connecting plate 412 at the other end of the upper connecting rod 41 provides a stable interface for subsequent connection with the connecting rod 43.

[0052] When in operation, the output rod of the upper linear push cylinder 42 moves linearly, which is converted into a force on the upper connecting rod 41 through the connecting rod 43, thereby driving the upper guide block 211 and the upper eccentric disk 21 to move. The rotational connection of the connecting rod 43 allows it to adapt to different motion angles and directions during force transmission, ensuring the efficiency and stability of force transmission.

[0053] like Figure 4 and Figure 9 As shown, the lower regulator 5 includes a lower connecting rod 51 and a lower linear push cylinder 52. The lower connecting rod 51 slides longitudinally through the bottom end of the housing 1. The top end of the lower connecting rod 51 is provided with an upper connecting plate 511 that is rotatably connected to the lower guide block 221. The bottom end of the lower connecting rod 51 is provided with a lower connecting plate 512. The lower linear push cylinder 52 is located at the bottom of the housing 1. The output rod of the lower linear push cylinder 52 is connected to the lower connecting plate 512.

[0054] When the lower linear push cylinder 52 is activated, the lower connecting rod 51 is guided to slide at the bottom of the housing 1 via the lower connecting plate 512. Then, the lower guide block 221 is moved in the lower mounting shell via the upper connecting plate 511, so that the lower eccentric disk 22 can move relative to the lower transmission rod 32. Under the action of centrifugal force, the eccentric end of the lower eccentric disk 22 is always in contact with the conical surface of the lower mounting cavity 12. This allows the rotation axis of the lower eccentric disk 22 to be adjusted, which can change the range and intensity of the vibration force generated by the lower eccentric disk 22. This allows the vibration force to act more precisely on specific areas of the precast concrete component, thereby improving the density and molding quality of the concrete.

[0055] like Figure 8 and Figure 10 As shown, the upper eccentric disk 21 is provided with an upper roller 23 at the contact end with the inner wall of the upper mounting cavity 11, and the lower eccentric disk 22 is provided with a lower roller 24 at the contact end with the inner wall of the lower mounting cavity 12.

[0056] The sliding friction between the upper eccentric disk 21 and the inner wall of the upper mounting cavity 11 is transformed into rolling friction. The frictional force of rolling friction is much smaller than that of sliding friction, which significantly reduces the resistance experienced by the upper eccentric disk 21 during movement. On the one hand, the driving energy required by the device is reduced, and the operating efficiency is significantly improved. On the other hand, the rolling of the rollers effectively reduces wear on the contact points, extends the service life of the upper eccentric disk 21 and the inner wall of the upper mounting cavity 11, and reduces maintenance costs and the frequency of component replacement.

[0057] The installation of the lower roller 24 transforms the friction between the lower eccentric disk 22 and the inner wall of the lower mounting cavity 12 into rolling friction. Similar to the upper roller 23, this significantly reduces friction, lowers energy loss, and improves the operating efficiency of the device. Simultaneously, it reduces wear on the lower eccentric disk 22 and the inner wall of the lower mounting cavity 12, extending the service life of the components.

[0058] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A high-density molding device for precast concrete components based on bidirectional rotational composite vibration compaction, characterized in that, The device includes a housing, on the circumferential surface of which are two upper mounting cavities symmetrically arranged along an axis, and at the bottom of the housing is a lower mounting cavity. The upper mounting cavities contain upper eccentric disks that can rotate in the vertical direction, and the lower mounting cavities contain lower eccentric disks that can rotate in the horizontal direction. The housing contains an upper transmission rod, a lower transmission rod, and a drive motor. The upper transmission rods transversely pass through the two upper mounting cavities and are connected to the two upper eccentric disks. The drive motor is connected to the upper transmission rods and the lower transmission rods. It also includes an amplitude adjustment mechanism, which can adjust the vibration amplitude of the upper eccentric disk and the lower eccentric disk respectively; The amplitude adjustment mechanism includes: the inner walls of the upper mounting cavity and the lower mounting cavity are conical; the upper eccentric disk can move radially along the upper transmission rod; the lower eccentric disk can move radially along the lower transmission rod; an upper adjuster is provided in the housing and is induced to drive the upper eccentric disk; the upper adjuster is used to adjust the axial position of the upper eccentric disk in the upper mounting cavity; and a lower adjuster is provided at the bottom of the housing and is induced to drive the lower eccentric disk; the lower adjuster is used to adjust the axial position of the lower eccentric disk in the lower mounting cavity. The upper eccentric disk is provided with an upper guide groove extending along the line connecting its rotation center and the mass eccentric point. An upper guide block is provided in the upper guide groove. The upper transmission rod passes through the upper guide block and forms a spline connection with it. The upper adjuster is rotatably connected to the upper guide block. An upper elastic element is provided between the upper guide block and the bottom of the upper guide groove, and the eccentric end of the upper eccentric disk elastically abuts against the inner wall of the upper mounting cavity.

2. The high-density molding device for precast concrete components based on bidirectional rotational composite vibration compaction according to claim 1, characterized in that, The lower eccentric disk is provided with a lower guide groove extending along the line connecting its rotation center and the mass eccentric point. A lower guide block is provided in the lower guide groove. The lower transmission rod passes through the lower guide block and forms a spline connection with it. The lower adjuster is rotatably connected to the lower guide block.

3. The high-density molding device for precast concrete components based on bidirectional rotational composite vibration compaction according to claim 2, characterized in that, A lower elastic element is provided between the lower guide block and the bottom of the lower guide groove, and the mass eccentric end of the lower eccentric disk elastically abuts against the inner wall of the lower mounting cavity.

4. The high-density molding device for precast concrete components based on bidirectional rotational composite vibration compaction according to claim 1, characterized in that, The upper regulator includes an upper connecting rod, an upper linear push cylinder, and a connecting rod. The upper connecting rod extends laterally through the machine housing. One end of the upper connecting rod is provided with an outer connecting plate that is rotatably connected to the upper guide block, and the other end of the upper connecting rod is provided with an inner connecting plate. The upper linear push cylinder is installed in the machine housing, and both ends of the connecting rod are rotatably connected to the output rod of the upper linear push cylinder and the inner connecting plate, respectively.

5. The high-density molding device for precast concrete components based on bidirectional rotational composite vibration compaction according to claim 2 or 3, characterized in that, The lower regulator includes a lower connecting rod and a lower linear push cylinder. The lower connecting rod slides longitudinally through the bottom end of the machine housing. The top end of the lower connecting rod is provided with an upper connecting plate that is rotatably connected to the lower guide block. The bottom end of the lower connecting rod is provided with a lower connecting plate. The lower linear push cylinder is located at the bottom of the machine housing, and the output rod of the lower linear push cylinder is connected to the lower connecting plate.

6. The high-density molding device for precast concrete components based on bidirectional rotational composite vibration compaction according to any one of claims 1-4, characterized in that, An upper roller is provided at the contact end between the upper eccentric disc and the inner wall of the upper mounting cavity, and a lower roller is provided at the contact end between the lower eccentric disc and the inner wall of the lower mounting cavity.

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