Prefabricated concrete component high-density forming device based on bidirectional rotation composite compaction

Abstract

The invention relates to the technical field of vibration equipment, in particular to a concrete prefabricated part high-density forming device based on bidirectional rotation composite jolt ramming, which comprises a machine shell, two upper mounting cavities which are symmetrical along the axis are arranged on the circumferential surface of the machine shell, and a lower mounting cavity is arranged at the bottom of the machine shell; an upper eccentric disc capable of rotating in the vertical direction is arranged in the upper mounting cavity, a lower eccentric disc capable of rotating in the horizontal direction is arranged in the lower mounting cavity, an upper transmission rod, a lower transmission rod and a driving motor are arranged in the machine shell, and the upper transmission rod transversely penetrates through the two upper mounting cavities and is in transmission connection with the two upper eccentric discs. The driving motor is in transmission connection with the upper transmission rod and the lower transmission rod, through the driving motor arranged in the machine shell, the upper eccentric disc arranged in the machine shell can be driven to rotate in the longitudinal direction, the lower eccentric disc can be driven to rotate in the horizontal direction, and the problems that an existing vibration mechanism only generates horizontal exciting force in the single direction, and obvious limitation exists are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vibrating equipment, and more specifically, to a high-density forming device for concrete precast components based on bidirectional rotary compound compaction. Background Art

[0002] In the production process of concrete precast components, traditional unidirectional vibration or ramming methods have significant limitations: Firstly, the excitation force in a single direction is difficult to achieve a three-dimensional uniform distribution of concrete slurry, easily leading to insufficient filling in the corner parts of the mold and forming defects such as pores and honeycomb-like cavities; Secondly, the slurry is prone to stratification phenomena of aggregate settlement and paste floating during vibration, especially more obvious in high-fluidity concrete; Moreover, for areas with dense steel bars or special-shaped components, traditional vibration methods often have compaction blind spots, resulting in local looseness problems. These defects will not only reduce the appearance quality of the precast components but also directly affect their mechanical properties and durability indicators.

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

[0004] This vibration mechanism relies on the rotation of the eccentric vibrator to generate a single-direction horizontal excitation force, and there are significant limitations: Firstly, the unidirectional vibration mode is difficult to achieve a three-dimensional uniform distribution of concrete slurry, resulting in insufficient filling in the mold corners and prone to defects such as pores and stratification; Secondly, the mechanical structure with fixed frequency and amplitude cannot adapt to the compaction requirements of different mix-ratio concretes, affecting the segregation resistance of high-fluidity concrete and the compaction effect of dry-hard concrete, and the amplitude cannot be adjusted in real time according to requirements during vibration. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, a high-density forming device for concrete precast components based on bidirectional rotary compound compaction is provided. The driving motor arranged in the machine shell can drive the upper eccentric disk arranged in the machine shell to rotate longitudinally and drive the lower eccentric disk to rotate horizontally, solving the problem that the existing vibration mechanism only generates a single-direction horizontal excitation force and cannot adjust the amplitude in real time.

[0006] To solve the problems of the existing technology, the present invention provides a high-density forming device for concrete precast members based on bidirectional rotary compaction, which includes a machine shell. On the circumferential surface of the machine shell, there are two upper mounting cavities symmetrically arranged along the axis. At the bottom of the machine shell, there is a lower mounting cavity. In the upper mounting cavity, there is an upper eccentric disk that can rotate in the vertical direction. In the lower mounting cavity, there is a lower eccentric disk that can rotate in the horizontal direction. Inside the machine shell, there are an upper transmission rod, a lower transmission rod, and a driving motor. The upper transmission rod horizontally penetrates through the two upper mounting cavities and is eccentrically connected to the two upper ones. The driving motor is drivingly connected to the upper transmission rod and the lower transmission rod.

[0007] 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, and the lower eccentric disk can move radially along the lower transmission rod. In the machine shell, there is an upper regulator drivingly connected to the upper eccentric disk, and the upper regulator is used to adjust the axial position of the upper eccentric disk in the upper mounting cavity. At the bottom end of the machine shell, there is a lower regulator drivingly connected to the lower eccentric disk, and the lower regulator is used to adjust the axial position of the lower eccentric disk in the lower mounting cavity.

[0008] Preferably, on the upper eccentric disk, there is an upper guiding groove extending along the direction of the connection line between its rotation center and the mass eccentric point. In the upper guiding groove, there is an upper guiding block. The upper transmission rod penetrates through the upper guiding block and forms a spline connection with it. The upper regulator is rotationally connected to the upper guiding block.

[0009] Preferably, on the lower eccentric disk, there is a lower guiding groove extending along the direction of the connection line between its rotation center and the mass eccentric point. In the lower guiding groove, there is a lower guiding block. The lower transmission rod penetrates through the lower guiding block and forms a spline connection with it. The lower regulator is rotationally connected to the lower guiding block.

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

[0011] Preferably, between the lower guiding block and the bottom of the lower guiding groove, there is a lower elastic element, 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 horizontally penetrates through the machine shell. One end of the upper connecting rod is provided with an outer connecting plate rotationally connected to the upper guiding block, and the other end of the upper connecting rod is provided with an inner connecting plate. The upper linear push cylinder is arranged in the machine shell, and the two ends of the connecting rod are respectively rotationally connected to the output rod of the upper linear push cylinder and the inner connecting plate.

[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 housing. At the top end of the lower connecting rod, there is an upper connecting plate rotatably connected to the lower guide block. At the bottom end of the lower connecting rod, there is a lower connecting plate. The lower linear push cylinder is arranged at the bottom of the housing, and the output rod of the lower linear push cylinder is connected to the lower connecting plate.

[0014] Preferably, upper rollers are provided at the contact end of the upper eccentric disk with the inner wall of the upper installation cavity, and lower rollers are provided at the contact end of the lower eccentric disk with the inner wall of the lower installation cavity.

[0015] The beneficial effects of this application compared with the prior art are as follows:

[0016] In this application, through the driving motor integrated in the housing, the upper eccentric disk can be independently controlled to rotate longitudinally (generating vertical excitation force) and the lower eccentric disk can be independently controlled to rotate horizontally (generating horizontal excitation force), thus realizing the synthesis of spatial vector vibration. This multi-directional coupling excitation mechanism effectively overcomes the inherent defects of traditional single-direction vibration systems: the vertical vibration component promotes the uniform settlement of concrete slurry in the depth direction of the mold, and the horizontal vibration component optimizes the lateral flow filling. The dynamic superposition of the two can eliminate the blind spots in the conventional compaction process, enabling the corner parts and the steel bar dense areas of special-shaped components to be fully compacted. At the same time, by adjusting the rotational speed ratio and phase difference of the two eccentric disks, the compaction requirements of different mix ratios of concrete (self-compacting concrete / dry-hard concrete) and component structures (solid slab / hollow beam) can be flexibly matched.

[0017] In this application, the upper regulator and the lower regulator are also respectively used to adjust the rotational axis positions of the upper eccentric disk and the lower eccentric disk. By changing the rotational axis (i.e., adjusting the relative position between the rotation center and the mass eccentric point), the amplitude of the vibration system can be dynamically adjusted. The amplitude can be adjusted in real time without replacing hardware, which is suitable for scenarios where the vibration intensity needs to be frequently changed (such as vibrating and screening different granular materials). The amplitude is reduced at low loads to reduce energy consumption, and the amplitude is increased at high loads to improve work efficiency. Description of the Drawings

[0018] Figure 1 is a perspective view of the high-density forming device for concrete precast components based on bidirectional rotary compound compaction of the present invention.

[0019] Figure 2 is a perspective sectional view of the high-density forming device for concrete precast components based on bidirectional rotary compound compaction of the present invention.

[0020] Figure 3 is a sectional view of the high-density forming device for concrete precast components based on bidirectional rotary compound compaction of the present invention.

[0021] Figure 4 is Figure 3Partial enlarged view of part A.

[0022] Figure 5 is Figure 3 Partial enlarged view of part B.

[0023] Figure 6 It is a partial three - dimensional exploded view of the high - density forming device for concrete precast components based on bidirectional rotary compound vibration compaction of the present invention.

[0024] Figure 7 It is a schematic diagram of the internal structure of the high - density forming device for concrete precast components based on bidirectional rotary compound vibration compaction of the present invention.

[0025] Figure 8 is Figure 7 Partial enlarged view of part C.

[0026] Figure 9 is Figure 7 Partial enlarged view of part D.

[0027] Figure 10 is Figure 7 Partial enlarged view of part E.

[0028] The reference numerals in the figure are: 1. Machine housing; 11. Upper installation cavity; 12. Lower installation cavity; 21. Upper eccentric disk; 211. Upper guide block; 212. Upper elastic element; 22. Lower eccentric disk; 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. Driving motor; 331. Driving bevel gear; 4. Upper regulator; 41. Upper connecting rod; 411. Outer connecting plate; 412. Inner connecting plate; 42. Upper linear push cylinder; 43. Connecting rod; 5. Lower regulator; 51. Lower connecting rod; 511. Upper connecting plate; 512. Lower connecting plate; 52. Lower linear push cylinder. Detailed implementation manners

[0029] To further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific implementation manners.

[0030] Such as Figure 1 、 Figure 2 and Figure 3As shown, a high-density forming device for precast concrete components based on bidirectional rotating composite compaction includes a casing 1, and two upper mounting cavities 11 symmetrical along the axis are arranged on the circumferential surface of the casing 1, and a lower mounting cavity 12 is arranged at the bottom of the casing 1, and an upper eccentric disk 21 capable of rotating in a vertical direction is arranged in the upper mounting cavity 11, and a lower eccentric disk 22 capable of rotating in a horizontal direction is arranged in the lower mounting cavity 12, and an upper transmission rod 31, a lower transmission rod 32 and a driving motor 33 are arranged in the casing 1, the upper transmission rod 31 transversely passes through the two upper mounting cavities 11 and is transmission-connected to the two upper eccentrics, and the driving motor 33 is transmission-connected to the upper transmission rod 31 and the lower transmission rod 32.

[0031] By installing a driving motor 33 in the casing 1, the upper eccentric disc 21 and the lower eccentric disc 22 can rotate simultaneously but in different directions. The rotation of the upper eccentric disc 21 in the vertical direction will generate a vertical vibration force, which helps to evenly distribute the concrete material in the mold along the vertical axis and eliminate the bubbles on the top of the concrete. At the same time, the rotation of the lower eccentric disc 22 in the horizontal direction will generate a horizontal vibration force. This horizontal force can further enhance the fluidity of the concrete in the mold, allowing the concrete to more fully fill every corner of the mold and promote the discharge of trapped bubbles in the middle and lower parts of the concrete. Driven by the driving motor 33 through the transmission rod, the upper eccentric disc 21 and the lower eccentric disc 22 work together to achieve a two-way rotation composite vibration function. This greatly improves the density of precast concrete components, ensuring that they have higher quality, better mechanical properties and durability during the production process.

[0032] When in use, the molding device is matched with the mold and the mold fixing system. The mold fixing system is composed of an elastic clamping mechanism and a pneumatic fine-tuning device, which can adaptively adjust the clamping force according to the mold specifications to prevent the mold from displacement or deformation.

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

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

[0035] An output shaft at the top of the drive motor 33 is provided with a driving bevel gear 331. A driven bevel gear 311 meshing with the driving bevel gear 331 is correspondingly provided on the upper transmission rod 31. When the drive motor 33 starts, the output shaft at the top drives the driving bevel gear 331 to rotate. The driving bevel gear 331 transmits power to the upper transmission rod 31 smoothly and efficiently through meshing with the driven bevel gear 311. The upper transmission rod 31 horizontally penetrates through two upper mounting cavities 11 and is in transmission connection with two upper eccentric disks 21, thereby driving the upper eccentric disks 21 to rotate in the vertical direction and realizing the compaction function in the vertical direction.

[0036] The output shaft at the bottom of the drive motor 33 is in transmission connection with the lower transmission rod 32. Through this connection method, the drive motor 33 transmits power to the lower transmission rod 32, and then drives the lower eccentric disk 22 to rotate in the horizontal direction, realizing the compaction function in the horizontal direction.

[0037] As Figure 4 、 Figure 5 and Figure 6 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 regulator 4 in transmission connection with the upper eccentric disk 21 is provided in the machine housing 1. The upper regulator 4 is used to adjust the axial position of the upper eccentric disk 21 in the upper mounting cavity 11. A lower regulator 5 in transmission connection with the lower eccentric disk 22 is provided at the bottom of the machine housing 1. The lower regulator 5 is used to adjust the axial position of the lower eccentric disk 22 in the lower mounting cavity 12.

[0038] Inside the machine housing 1, an upper regulator 4 in transmission connection with the upper eccentric disk 21 is provided. The upper regulator 4 is used to adjust the axial position of the upper eccentric disk 21 in the upper mounting cavity 11. By controlling the axial position of the upper eccentric disk 21, the intensity and range of the vertical vibration force generated by its rotation can be effectively regulated. For example, when processing concrete precast members of different sizes, or when there are specific density requirements for the upper part of the concrete, the operator can use the upper regulator 4 to adjust the position of the upper eccentric disk 21, and then adjust the rotation axis of the upper eccentric disk 21. If a certain area in the upper part of the concrete requires a stronger vibration force, the upper eccentric disk 21 can be adjusted to a position closer to this area, thereby enhancing the vibration effect.

[0039] At the bottom end of the casing 1, a lower regulator 5 is installed and is in driving connection with the lower eccentric disk 22. The lower regulator 5 is used to adjust the axial position of the lower eccentric disk 22 in the lower installation cavity 12. Similar to the upper regulator 4, the lower regulator 5 can finely adjust the horizontal vibration force generated by the rotation of the lower eccentric disk 22, and further adjust the rotation axis of the lower eccentric disk 22. This enables the device to adapt to various concrete pouring scenarios and meet different requirements for the horizontal distribution and compaction of concrete. For example, when the mold has a complex shape, or there are specific areas in the middle and lower parts of the concrete that require stronger vibration to ensure better filling and air bubble discharge, the axial position of the lower eccentric disk 22 can be changed by adjusting the lower regulator 5, thereby optimizing the horizontal vibration effect. The tapered inner wall of the installation cavity, combined with the axially adjustable position of the eccentric disk through the regulator, works together to provide a high degree of flexibility and adaptability during 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] As Figure 4 , Figure 7 and Figure 8 shown, an upper guide groove extending along the direction of the connection line between the rotation center and the mass eccentric point is provided on the upper eccentric disk 21. An upper guide block 211 is arranged 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 regulator 4 is rotationally 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 the upper guide block 211. The spline connection can not only ensure 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 allow the upper eccentric disk 21 to smoothly move along the radial direction of the upper transmission rod 31. This enables the upper eccentric disk 21 to adjust its position on the upper transmission rod 31 according to actual needs. Since the upper eccentric disk 21 always abuts against the conical surface of the upper installation 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 action range and intensity of the longitudinal vibration force.

[0042] As Figure 5 and Figure 10 shown, a lower guide groove extending along the direction of the connection line between the rotation center and the mass eccentric point is provided on the lower eccentric disk 22. A lower guide block 221 is arranged 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 regulator 5 is rotationally connected to the lower guide block 221.

[0043] The lower transmission rod 32 passes through the lower guide block 221 and forms a spline connection with the lower guide block 221. The spline connection can ensure that the lower transmission rod 32 smoothly transmits power to the lower guide block 221, and then drives 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. On the other hand, the spline connection also allows the lower eccentric disk 22 to move radially along the lower transmission rod 32. This characteristic enables the lower eccentric disk 22 to flexibly adjust its position and rotation axis on the lower transmission rod 32 according to actual production requirements, thereby changing the action range and intensity of the vibration force.

[0044] As Figure 4 and Figure 8 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 generate periodic centrifugal force changes due to mass eccentricity. These changes in centrifugal force will cause certain impacts and vibrations during the movement of the upper guide block 211. The upper elastic element 212 can effectively absorb and buffer these impacts and vibrations. It converts the instantaneously generated impact force into elastic potential energy through its own elastic deformation and then slowly releases it, thereby greatly reducing the rigid collision 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 smooth movement of the upper eccentric disk 21.

[0046] When the upper eccentric disk 21 is displaced during rotation due to various factors (such as the non-uniformity of concrete materials, vibrations of the device, etc.), the elastic abutment can automatically adjust the position of the upper eccentric disk 21 to keep it always in effective contact with the inner wall of the upper mounting cavity 11. At the same time, the elastic abutment can also absorb a part of the impact force generated by the position displacement, avoid rigid collision between the upper eccentric disk 21 and the inner wall of the upper mounting cavity 11, and reduce the risk of device damage.

[0047] As Figure 5 and Figure 10 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 through the lower transmission rod 32, due to the mass eccentricity of the lower eccentric disk 22, a centrifugal force that changes periodically will be generated during the rotation process. The fluctuation of this centrifugal force will cause impacts and vibrations when the lower guide block 221 moves. The lower elastic element 222 converts the instantaneous impact force into elastic potential energy and stores it through its own elastic deformation, and then releases it slowly. 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 the service life of both, but also ensuring the smooth movement of the lower eccentric disk 22.

[0049] The mass eccentric end of the lower eccentric disk 22 is elastically abutted against the inner wall of the lower installation cavity 12. On the one hand, this elastic abutment ensures that the lower eccentric disk 22 always maintains good contact with the inner wall of the lower installation cavity 12 during rotation, so that the vibration force generated by the rotation of the lower eccentric disk 22 can be efficiently transmitted to the machine housing 1 and the concrete material in the mold. Due to the mass eccentricity of the lower eccentric disk 22, a centrifugal force pointing to the mass eccentric end will be generated during the rotation process. Through the elastic abutment, this centrifugal force can directly act on the inner wall of the lower installation cavity 12, and then be transmitted to the entire device and the concrete, enhancing the compaction effect in the horizontal direction.

[0050] As Figure 4 and Figure 9 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 transversely penetrates the machine 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 arranged in the machine housing 1. The two ends of the connecting rod 43 are respectively rotatably connected to the output rod of the upper linear push cylinder 42 and the inner connecting plate 412.

[0051] The upper connecting rod 41 transversely penetrates the machine housing 1. This layout enables it to establish an effective connection channel inside and outside the machine housing 1. The outer connecting plate 411 provided 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 through the outer connecting plate 411. When the position of the upper eccentric disk 21 needs to be adjusted, the upper connecting rod 41 can smoothly transmit the acting force from the upper linear push cylinder 42 to the upper guide block 211, and then drive the upper eccentric disk 21 to move. The inner connecting plate 412 provided at the other end of the upper connecting rod 41 provides a stable interface for the subsequent connection with the connecting rod 43.

[0052] When working, the output rod of the upper linear push cylinder 42 moves linearly, and this linear motion is converted into a force acting on the upper connecting rod 41 through the connecting rod 43, thereby driving the upper guide block 211 and the upper eccentric disc 21 to move. The rotational connection mode of the connecting rod 43 enables it to adapt to different motion angles and direction changes during the force transmission process, ensuring the force transmission efficiency and stability.

[0053] As Figure 4 and Figure 9 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 arranged at the bottom of the housing 1, and 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 started, the lower connecting rod 51 can be guided to slide at the bottom end of the housing 1 through the lower connecting plate 512, and then the lower guide block 221 can be driven to move in the lower mounting shell through the upper connecting plate 511, so that the lower eccentric disc 22 can move relative to the lower transmission rod 32. Under the action of centrifugal force, the mass eccentric end of the lower eccentric disc 22 always abuts against the conical surface of the lower mounting cavity 12. In this way, the rotation axis of the lower eccentric disc 22 can be adjusted, and the action range and intensity of the vibration force generated by the lower eccentric disc 22 can be changed, so that the vibration force can act more precisely on a specific area of the concrete precast member, thereby improving the density and forming quality of the concrete.

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

[0056] The sliding friction between the upper eccentric disc 21 and the inner wall of the upper mounting cavity 11 is converted into rolling friction. The frictional force of rolling friction is much smaller than that of sliding friction, which greatly reduces the resistance suffered by the upper eccentric disc 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 can effectively reduce the wear of the contact part, extend the service life of the upper eccentric disc 21 and the inner wall of the upper mounting cavity 11, and reduce the maintenance cost and the frequency of replacing parts.

[0057] The installation of the lower roller 24 transforms the friction form between the lower eccentric disc 22 and the inner wall of the lower installation cavity 12 into rolling friction. Similar to the upper roller 23, this greatly reduces the frictional force, decreases the energy loss, and improves the operating efficiency of the device. Meanwhile, the wear of the lower eccentric disc 22 and the inner wall of the lower installation cavity 12 is reduced, and the service life of the components is prolonged.

[0058] The above embodiments only represent one or several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A high-density forming device for precast concrete components based on bidirectional rotating composite compaction, characterized in that: The invention comprises a casing, wherein two upper mounting cavities symmetrical along an axis are arranged on a circumferential surface of the casing, a lower mounting cavity is arranged at the bottom of the casing, an upper eccentric disk capable of rotating in a vertical direction is arranged in the upper mounting cavity, a lower eccentric disk capable of rotating in a horizontal direction is arranged in the lower mounting cavity, an upper transmission rod, a lower transmission rod and a driving motor are arranged in the casing, the upper transmission rod horizontally passes through the two upper mounting cavities and is transmission-connected to the two upper eccentric disks, and the driving motor is transmission-connected to the upper transmission rod and the lower transmission rod; It also includes an amplitude adjustment mechanism, which can adjust the vibration amplitudes of the upper eccentric disk and the lower eccentric disk respectively.

2. According to the high-density forming device for precast concrete components based on bidirectional rotation composite compaction according to claim 1, the amplitude adjustment mechanism comprises: 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, and the lower eccentric disk can move radially along the lower transmission rod. An upper adjuster connected to the upper eccentric disk in a transmission manner is provided in the casing, and the upper adjuster is used to adjust the axial position of the upper eccentric disk in the upper mounting cavity. A lower adjuster connected to the lower eccentric disk in a transmission manner is provided at the bottom end of the casing, and the lower adjuster is used to adjust the axial position of the lower eccentric disk in the lower mounting cavity.

3. The high-density forming device for precast concrete components based on bidirectional rotation and composite compaction according to claim 2 is characterized in that: The upper eccentric disk is provided with an upper guide groove extending along the direction of the line connecting its rotation center and the mass eccentric point, an upper guide block is provided in the upper guide groove, an upper transmission rod passes through the upper guide block and forms a spline connection with the upper guide block, and an upper adjuster is rotatably connected to the upper guide block.

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

5. The high-density forming device for precast concrete components based on bidirectional rotation and composite compaction according to claim 3 is characterized in that: An upper elastic element is arranged between the upper guide block and the bottom of the upper guide groove, and the mass eccentric end of the upper eccentric disk elastically abuts against the inner wall of the upper mounting cavity.

6. The high-density forming device for precast concrete components based on bidirectional rotation and composite compaction according to claim 4 is characterized in that: A lower elastic element is arranged 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.

7. The high-density forming device for precast concrete components based on bidirectional rotation and composite compaction according to claim 3 or 5, characterized in that: The upper adjuster includes an upper connecting rod, an upper linear push cylinder and a connecting rod. The upper connecting rod passes through the casing horizontally. One end of the upper connecting rod is provided with an outer connecting plate 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 arranged in the casing, and the two ends of the connecting rod are respectively rotatably connected to the output rod of the upper linear push cylinder and the inner connecting plate.

8. The high-density forming device for precast concrete components based on bidirectional rotation and composite compaction according to claim 4 or 6, characterized in that: The lower adjuster includes a lower connecting rod and a lower linear push cylinder. The lower connecting rod slides longitudinally through the bottom end of the casing. The top end of the lower connecting rod is provided with an upper connecting plate 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 arranged at the bottom of the casing, and the output rod of the lower linear push cylinder is connected to the lower connecting plate.

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

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