Raft plate post-cast strip prefabricated moulding bed

Abstract

The utility model relates to the technical field of building construction, in particular to a raft post-cast strip prefabricated moulding bed which comprises a base plate, one end of the upper surface of the base plate is clamped with the bottom of a power box, one end of the bottom of the inner wall of the power box is fixedly connected with the bottom of a motor, and an output shaft on one side of the motor is fixedly connected with one side of an eccentric wheel. The middle of the outer circumferential face of the eccentric wheel is slidably connected with the outer side of the bottom of a power inclined rod, the outer side of the top of the power inclined rod is fixedly connected with the middle of one side of a pushing plate, and the arc-shaped face of the other side of the pushing plate makes sliding contact with one side of the outer circumferential face of a knocking ball. When the eccentric wheel rotates, the power inclined rod is promoted to drive the knocking ball to knock the template, so that vibration of the side surface of the template is realized, hollowing caused by accumulation of concrete during pouring is prevented, full load of the concrete in the valve plate is ensured, subsequent manual knocking is avoided, manpower and material resources are saved, and the labor intensity of workers is reduced; and the effect of improving the quality of the valve plate post-cast strip is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a precast tire formwork for the post-cast strip of raft foundation Background Technique

[0002] A post-cast strip is a temporary construction joint left at the corresponding positions of the foundation slab, wall, and beam in accordance with design or construction specification requirements to prevent harmful cracks that may occur due to uneven temperature and shrinkage in the cast-in-place reinforced concrete structure. The structure is temporarily divided into several parts, and after the internal shrinkage of the components, the concrete of this construction joint is poured after a certain period of time to connect the structure into a whole.

[0003] Through retrieval, Chinese Patent Publication No. CN212612650U discloses a precast tire formwork for the post-cast strip of raft foundation, which includes a bottom plate frame, an inclined frame, and an upper end head frame integrally welded by a steel bar mesh. Concrete is poured into the steel bar mesh to make the precast tire formwork for the post-cast strip. The inclined frame is inclined to the bottom plate frame, and an obtuse angle is formed between the inclined frame and the bottom plate frame. The bottom plate frame and the upper end head frame are welded to both ends of the inclined frame; in addition, PVC pipes are embedded in the longitudinal direction of the steel bar meshes of the bottom plate frame and the inclined frame. The embedding positions of the PVC pipes are: 50 mm away from the edge of the bottom plate frame on the side far from the inclined plate, and 50 mm away from the edge of the inclined frame on the side close to the upper end head frame. This design prefabricates the bottom plate and the side formwork at one time. Once the earthwork is excavated to the foundation bottom, it can be installed, which can save the time of cushion layer, side formwork brick masonry, and side formwork plastering, simplify the construction process, speed up the construction progress, and save construction costs at the same time.

[0004] In view of the above related technologies, the inventor found the following defects: The existing precast tire formwork for the post-cast strip of raft foundation is rather cumbersome in the fixing process during use, the formwork is not convenient to disassemble later, and at the same time, voids are likely to appear inside during pouring, affecting the quality of the valve plate. Summary of the Utility Model

[0005] In order to ensure that the concrete fully fills the post-cast strip of the valve plate during pouring, avoid the phenomenon of hollowing in the post-cast strip of the valve plate, ensure the quality of the post-pouring, reduce the subsequent maintenance of the valve plate, and at the same time facilitate the installation and disassembly of the valve plate, improve the working efficiency of valve plate pouring, and avoid delaying the project progress of valve plate pouring, the present application provides a precast tire formwork for the post-cast strip of raft foundation.

[0006] A precast tire formwork for the post-cast strip of raft slab provided by the present application adopts the following technical solution: It includes a base plate. One end of the upper surface of the base plate is clamped with the bottom of a power box. One end of the bottom inner wall of the power box is fixedly connected with the bottom of a motor. The output shaft on one side of the motor is fixedly connected with one side of an eccentric wheel. The middle of the outer circumferential surface of the eccentric wheel is slidably connected with the outside of the bottom of a power inclined rod. The outside of the top of the power inclined rod is fixedly connected with the middle of one side of a pushing plate. The arc surface on the other side of the pushing plate is slidably contacted with one side of the outer circumferential surface of a knocking ball. The top of the knocking ball is fixedly connected with one end of a tension spring, and the other end of the tension spring is fixedly connected with the top of the inner wall of the power box.

[0007] One side of the bottom of the power inclined rod is rotationally connected with one end of a sliding rod through a rotating frame, and the other end of the sliding rod is rotationally connected with the middle of one side of a circular pushing plate. The middle of the other side of the circular pushing plate is fixedly connected with one end of a return spring, and the other end of the return spring is fixedly connected with the bottom of one side of the inner wall of the power box.

[0008] Optionally, the number of power boxes is two, and the two power boxes are symmetrically arranged at both ends of the upper surface of the base plate, and the bottoms of the two power boxes are both clamped with the upper surface of the base plate.

[0009] Optionally, the connection part between the eccentric wheel and the output shaft of the motor is located at two-thirds away from the center of the circle. A chute is arranged at the center of the outer circumferential surface of the eccentric wheel, and the width of the chute is greater than the thickness of the power inclined rod.

[0010] Optionally, the power inclined rod is set in a "V" shape. A rotating shaft is rotationally arranged at the end point of the top of the power inclined rod, and both ends of the rotating shaft are fixedly arranged at the top of the right side of the inner wall of the power box through support blocks.

[0011] Optionally, the diameter of the circular pushing plate is the same as that of the power groove at the bottom of the inner wall of the power box, and the return spring is located at the bottom of the inner wall of the power groove.

[0012] Optionally, a top template is clamped on the upper surface of the base plate. Trapezoidal card slots are fixedly arranged at both ends of the top template, and the inner walls of the trapezoidal card slots are clamped with the edge positions of the clamping plates. The bottom of the clamping plate is fixedly connected with the top of the power box.

[0013] Optionally, the number of clamping plates is eight. Two of the clamping plates are symmetrically arranged as a group at one end of the bottom of the power box. An arc-shaped elastic plate is arranged in the middle between the two clamping plates. A fixing rod is arranged at the top of the clamping plate, and the two clamping plates are clamped through the fixing rod.

[0014] In summary, the present application includes the following beneficial technical effects:

[0015] 1. The utility model realizes the vibration of the side surface of the formwork by setting that when the eccentric wheel rotates, it prompts the power inclined rod to drive the knocking ball to knock on the formwork, preventing the concrete from piling up and causing hollowing during pouring, ensuring the full load of the concrete inside the valve plate, avoiding the subsequent need for manual knocking, saving manpower and material resources, reducing the labor intensity of workers, and achieving the effect of improving the quality of the post-cast strip of the valve plate.

[0016] 2. The utility model ensures that the post-cast strip of the valve plate is fully filled with concrete during pouring, avoids the phenomenon of hollowing in the post-cast strip of the valve plate, ensures the quality of the post-pouring, reduces the subsequent maintenance of the valve plate, and at the same time facilitates the installation and disassembly of the valve plate, improves the working efficiency of the valve plate pouring, and avoids delaying the project progress of the valve plate pouring. Brief Description of the Drawings

[0017] Figure 1 It is a three-dimensional sectional structure schematic diagram in an embodiment of the present application;

[0018] Figure 2 It is a three-dimensional internal structure schematic diagram of the power box in an embodiment of the present application;

[0019] Figure 3 It is a three-dimensional structure schematic diagram of the sliding rod in an embodiment of the present application;

[0020] Figure 4 It is a sectional structure schematic diagram of the front in an embodiment of the present application;

[0021] Figure 5 It is a three-dimensional structure schematic diagram of the whole in an embodiment of the present application.

[0022] Reference Numerals: 1, base plate; 2, power box; 3, sliding rod; 4, circular push plate; 5, return spring; 6, power inclined rod; 7, rotating shaft; 8, clamping plate; 9, arc-shaped elastic plate; 10, fixed rod; 11, push plate; 12, knocking ball; 13, eccentric wheel; 14, motor; 15, top formwork; 16, tension spring. Detailed Description of the Embodiment

[0023] The following further elaborates on the present application in conjunction with the attached Figures 1-5 for further detailed description of the present application.

[0024] An embodiment of the present application discloses a precast tire formwork for the post-cast strip of a raft foundation. As Figure 1 shown, it includes a base plate 1, the upper surface of the base plate 1 is clamped with a top formwork 15, both ends of the top formwork 15 are fixedly provided with trapezoidal card slots, the inner wall of the trapezoidal card slots is clamped with the edge position of the clamping plate 8, and the bottom of the clamping plate 8 is fixedly connected to the top of the power box 2. Through the clamping plate 8, it is convenient to realize the clamping of the top formwork 15 and the bottom power box 2, facilitating the subsequent disassembly of the formwork.

[0025] Please refer toFigure 1 There are eight clamping plates 8. Two of the clamping plates 8 are symmetrically arranged as a group at one end of the bottom of the power box 2. An arc-shaped elastic plate 9 is arranged in the middle between the two clamping plates 8. A fixing rod 10 is arranged on the top of the clamping plate 8. The two clamping plates 8 are clamped by the fixing rod 10. The arc-shaped elastic plate 9 is arranged between the two clamping plates 8. While playing a supporting role for the clamping plate 8, it can facilitate the opposite movement of the two clamping plates 8 and facilitate the timely reset of the clamping plate 8 after movement. The fixing rod 10 fixes the clamping plate 8 after the movement is completed.

[0026] Please refer to Figure 1 One end of the upper surface of the base plate 1 is clamped with the bottom of the power box 2. There are two power boxes 2. The two power boxes 2 are symmetrically arranged at both ends of the upper surface of the base plate 1. The bottoms of the two power boxes 2 are both clamped with the upper surface of the base plate 1. Two identical power boxes 2 are arranged on both sides of the template, so that both ends of the template can be vibrated, making the concrete pouring more perfect. One end of the bottom of the inner wall of the power box 2 is fixedly connected with the bottom of the motor 14. The output shaft on one side of the motor 14 is fixedly connected with one side of the eccentric wheel 13. The middle of the outer circumferential surface of the eccentric wheel 13 is slidably connected with the outside of the bottom of the power inclined rod 6. The outside of the top of the power inclined rod 6 is fixedly connected with the middle of one side of the push plate 11. The arc-shaped surface on the other side of the push plate 11 is in sliding contact with one side of the outer circumferential surface of the knocking ball 12. The top of the knocking ball 12 is fixedly connected with one end of the tension spring 16. The other end of the tension spring 16 is fixedly connected with the top of the inner wall of the power box 2.

[0027] Please refer to Figure 1 One side of the bottom of the power inclined rod 6 is rotatably connected with one end of the sliding rod 3 through a rotating frame. The other end of the sliding rod 3 is rotatably connected with the middle of one side of the circular push plate 4. The diameter of the circular push plate 4 is the same as that of the power groove at the bottom of the inner wall of the power box 2. The return spring 5 is located at the bottom of the inner wall of the power groove. The circular push plate 4 with the same diameter can facilitate horizontal sliding, so that the circular push plate 4 can be slidably connected with the inner wall of the power groove when sliding. The inner wall of the power groove can also play a limiting role for the side surface of the circular push plate 4. The middle of the other side of the circular push plate 4 is fixedly connected with one end of the return spring 5. The other end of the return spring 5 is fixedly connected with the bottom of one side of the inner wall of the power box 2.

[0028] Please refer to Figure 2 The power inclined rod 6 is arranged in a "V" shape. A rotating shaft 7 is rotatably arranged at the end point of the top of the power inclined rod 6. Both ends of the rotating shaft 7 are fixedly arranged at the top of the right side of the inner wall of the power box 2 through support blocks. By arranging the power inclined rod 6 in a "V" shape, when one end of the power inclined rod 6 is stressed, the other end of the power inclined rod 6 can generate a thrust.

[0029] Please refer to Figure 2, the connection between the eccentric wheel 13 and the output shaft of the motor 14 is located at two-thirds away from the center of the circle. A chute is provided at the center of the outer circumferential surface of the eccentric wheel 13, and the width of the chute is greater than the thickness of the power inclined rod 6. Connect the output shaft of the motor 14 to the center of the principle eccentric wheel 13, so that under the action of the rotation of the eccentric wheel 13, the power inclined rod 6 on one side can swing reciprocally left and right.

[0030] The implementation principle of the precast tire formwork for the post-cast strip of the raft slab in the embodiment of the present application is as follows: Squeeze the two clamping plates 8 in the approaching direction. The clamping plates 8 pass through the top formwork 18 and are clamped with the clamping grooves on the upper surface, so as to realize the clamping of the power box 2 at the bottom and the top formwork 15. After the clamping plates 8 pass through the top formwork 15, they are squeezed to both sides under the action of the arc-shaped elastic plate 9, and the power box 2 and the top formwork 15 are connected as a whole through the clamping plates 8. When pouring concrete, start the motor 14 as the power to drive the eccentric wheel 13 to rotate. The eccentric wheel 13 drives the push plate 11 to reciprocate through the "V"-shaped power inclined rod 6 on one side. The push plate 11 vibrates the knocking ball 12 towards the side of the top formwork 15. Under the action of the tension spring 16, the knocking ball 12 vibrates and knocks on the top formwork 15, so as to achieve the effect of vibrating the concrete inside the top formwork 15, avoid the accumulation of the internal concrete, and prevent the phenomenon of gaps.

[0031] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A precast formwork for the post-cast strip of raft slab, comprising a base plate (1), characterized in that: One end of the upper surface of the base plate (1) is clamped with the bottom of the power box (2). One end of the bottom of the inner wall of the power box (2) is fixedly connected to the bottom of the motor (14). The output shaft on one side of the motor (14) is fixedly connected to one side of the eccentric wheel (13). The middle of the outer circumferential surface of the eccentric wheel (13) is slidably connected to the outside of the bottom of the power inclined rod (6). The outside of the top of the power inclined rod (6) is fixedly connected to the middle of one side of the push plate (11). The arc surface on the other side of the push plate (11) is slidably contacted with one side of the outer circumferential surface of the percussion ball (12). The top of the percussion ball (12) is fixedly connected to one end of the tension spring (16). The other end of the tension spring (16) is fixedly connected to the top of the inner wall of the power box (2). One side of the bottom of the power inclined rod (6) is rotatably connected to one end of the sliding rod (3) through a rotating frame. The other end of the sliding rod (3) is rotatably connected to the middle of one side of the circular push plate (4). The middle of the other side of the circular push plate (4) is fixedly connected to one end of the return spring (5). The other end of the return spring (5) is fixedly connected to the bottom of one side of the inner wall of the power box (2).

2. The precast tire formwork for the post-cast strip of raft slab according to claim 1, wherein: The number of the power boxes (2) is two. The two power boxes (2) are symmetrically arranged at both ends of the upper surface of the base plate (1). The bottoms of the two power boxes (2) are both clamped with the upper surface of the base plate (1).

3. A precast tire formwork for the post-cast strip of raft slab according to claim 1, characterized in that: The connection part of the eccentric wheel (13) and the output shaft of the motor (14) is located at two-thirds away from the center of the circle. A chute is arranged at the center of the outer circumferential surface of the eccentric wheel (13). The width of the chute is greater than the thickness of the power inclined rod (6).

4. A precast tire formwork for the post-cast strip of raft slab according to claim 1, characterized in that: The power inclined rod (6) is arranged in a "V" shape. A rotating shaft (7) is rotatably arranged at the end point of the top of the power inclined rod (6). Both ends of the rotating shaft (7) are fixedly arranged at the top of the right side of the inner wall of the power box (2) through support blocks.

5. The precast tire formwork for the post-cast strip of raft slab according to claim 1, characterized in that: The diameter of the circular push plate (4) is the same as that of the power groove at the bottom of the inner wall of the power box (2). The return spring (5) is located at the bottom of the inner wall of the power groove.

6. The prefabricated tire formwork for the post-cast strip of raft slab according to claim 1, wherein: The top template (15) is clamped on the upper surface of the base plate (1). Trapezoidal card slots are fixedly arranged at both ends of the top template (15). The inner wall of the trapezoidal card slot is clamped with the edge position of the clamping plate (8). The bottom of the clamping plate (8) is fixedly connected to the top of the power box (2).

7. A precast tire formwork for the post-cast strip of raft slab according to claim 6, characterized in that: The number of the clamping plates (8) is eight. Two of the clamping plates (8) are symmetrically arranged as a group at one end of the bottom of the power box (2). An arc-shaped elastic plate (9) is arranged in the middle between the two clamping plates (8). A fixing rod (10) is arranged at the top of the clamping plate (8). The two clamping plates (8) are clamped through the fixing rod (10).

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