CN220699972U

CN220699972U - Prefabricated component mandrel mould and prefabricated component thereof

Info

Publication number: CN220699972U
Application number: CN202320135421.XU
Authority: CN
Inventors: 王春雷; 杨思忠; 任成传; 朱凤起; 王群; 董铁良; 卢造; 国仕蕾; 刘蕴哲; 董慧生; 赵志刚; 陈旭; 闫明
Original assignee: Beijing Yantong Precast Concrete Co ltd; Chengde Green Building Energy Saving Technology Co ltd
Current assignee: Beijing Yantong Precast Concrete Co ltd; Chengde Green Building Energy Saving Technology Co ltd
Priority date: 2023-01-17
Filing date: 2023-01-17
Publication date: 2024-04-02
Anticipated expiration: 2033-01-17

Abstract

The utility model discloses a prefabricated part core mold and a prefabricated part thereof, wherein the mold comprises a core mold body, wherein a first bulge serving as a tenon is arranged on the core mold body, so that a mortise capable of accommodating a prefabricated part reinforcing steel bar is formed in the prefabricated part, and further cast-in-place concrete is filled into the mortise to form a mortise and tenon structure. The utility model also provides the prefabricated part manufactured by the prefabricated part core mould. When prefabricated components are assembled, cast-in-place concrete enters the cast-in-place cavity to be solidified, and then the cast-in-place concrete can form tenons and mortises in a matched mode, so that a mortise-tenon structure between new and old concrete is achieved, reliable and firm combination with cast-in-place concrete is formed, the integrity is good, and the feather flushing process in production is prevented.

Description

Prefabricated component mandrel mould and prefabricated component thereof

Technical Field

The utility model relates to the field of prefabricated part production, in particular to a prefabricated part core mold and a prefabricated part thereof.

Background

When the prefabricated component is manufactured, the mould frame is firstly erected, and then the core mould is arranged in the mould frame, so that after concrete is poured into the mould frame, the core mould can construct a structure with a corresponding shape in the formed concrete. When the prefabricated components are assembled, the structures can be filled with cast-in-place concrete, so that the adjacent prefabricated components can be directly assembled and combined. For example, a core mold which is approximately square is arranged at the bottom of the mold frame, concrete is poured in the mold frame, the core mold is removed after the concrete is solidified, a cast-in-situ cavity with a corresponding shape is formed in the manufactured prefabricated part, when the upper prefabricated part and the lower prefabricated part are assembled, the vertical steel bars at the top of the lower prefabricated part extend into the cast-in-situ cavity at the bottom of the upper prefabricated part, and a concrete pouring channel is arranged above the cast-in-situ cavity so as to pour the concrete into the cast-in-situ cavity, so that the vertical steel bars of the lower prefabricated part are wrapped with the concrete in the cast-in-situ cavity, and the reliable connection of the upper prefabricated part and the lower prefabricated part is realized. Similarly, the mandrel may also extend through the mold frame from one end to the other, thereby forming a top-to-bottom through cast-in-place cavity.

However, the existing core mold is too simple in shape, so that the inner wall of a cast-in-situ cavity formed in the prefabricated part is too smooth, reliable and firm combination with cast-in-situ concrete cannot be formed, and the combination integrity of new concrete and old concrete is poor. In some methods, the bonding strength of new and old concrete is improved by punching the inner side of the cast-in-situ cavity of the prefabricated part, but when the punching effect of the cast-in-situ cavity is poor, the bonding effect of the new and old concrete is poorer, so that the hidden danger exists in the punching process depending on production.

The present utility model has been made in view of this.

Disclosure of Invention

The utility model aims to provide a prefabricated part core mold and a prefabricated part thereof, which can improve the reliability and the integrity of the combination of new concrete and old concrete, can replace the scouring process, and avoid the scouring process too dependent on production.

To solve the above problems, an embodiment of the present utility model provides a preform core mold including: the core die body is provided with a first bulge serving as a tenon, so that a mortise capable of accommodating the prefabricated member steel bars is formed in the prefabricated member, and then cast-in-place concrete is filled into the mortise to form a mortise and tenon structure.

Optionally, the first protrusion extends from the surface of the core die body in a straight line in a direction away from the core die body and gradually increases in width until reaching an end of the first protrusion, thereby forming a dovetail.

Optionally, the first protrusion extends from the surface of the core die body, is an arc surface extending away from the core die body, and gradually increases in width, extends to the middle section of the first protrusion, and then continues to extend away from the core die body, is an arc surface extending away from the core die body, gradually narrows in width, and extends to the end of the first protrusion, so that a round tenon is formed.

Optionally, the core die body is further provided with a second protrusion for forming a groove for accommodating the prefabricated member reinforcing steel bar; the second protrusions are arranged on two sides of the core die body, and the first protrusions are arranged in the middle of the core die body.

Optionally, a cast-in-situ cavity is formed in the prefabricated part, and a mortise is formed in the inner wall of the cast-in-situ cavity, so that cast-in-situ concrete enters the cast-in-situ cavity and then forms a tenon corresponding to the mortise, and a mortise and tenon structure is formed.

Compared with the prior art, the utility model has the following beneficial effects: the first bulge serving as the tenon is arranged on the core die body, so that a tenon groove is formed in the prefabricated part, when the prefabricated part is assembled, cast-in-place concrete enters the cast-in-place cavity to be solidified, the tenon can be formed by matching with the tenon groove, and further, a tenon-and-mortise structure between new and old concrete and the cast-in-place concrete are reliably and firmly combined, the integrity is good, and the feather flushing process when the cast-in-place concrete is too dependent on production is prevented.

Drawings

Fig. 1 is a schematic bottom view of a prefabricated part core mold according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of a front view structure of a core mold for a prefabricated part according to an embodiment of the present utility model;

fig. 3 is a schematic bottom view of a prefabricated part manufactured by the prefabricated part core mold according to the embodiment of the utility model;

fig. 4 is a schematic bottom view of a preform core mold according to another embodiment of the present utility model;

fig. 5 is a schematic bottom view of a prefabricated element manufactured by a prefabricated element core mold according to another embodiment of the utility model;

in the figure: 1-a mandrel body; 2-a first bump; 3-mortises; 4-prefabricating a component; 5-new concrete; 6-old concrete; 7-second protrusions.

Detailed Description

The principles and spirit of the present utility model will be described below with reference to several exemplary embodiments shown in the drawings. It should be understood that these embodiments are described only to enable those skilled in the art to better understand and to practice the utility model, and are not intended to limit the scope of the utility model in any way.

Referring to fig. 1 to 5, an embodiment of the present utility model provides a prefabricated member core mold, which includes a core mold body 1 having a substantially square box shape, one or more first protrusions 2 are provided on front and rear opposite surfaces of the core mold body 1, the first protrusions being tenons, and since the core mold is placed into a prefabricated member mold frame in use, concrete poured into the prefabricated member mold frame coats the core mold during manufacturing, and thus after the concrete is solidified, the core mold is removed (if the core mold has a hollow structure, there may be a case where removal is not required), and a cast-in-place cavity corresponding to the shape of the core mold can be formed inside the prefabricated member. The core mould can penetrate through two ends of the mould frame and can also be arranged at the bottom of the mould frame. As described above, since the core mold body 1 has the tenon, i.e., the first protrusion 2, the mortise 3 corresponding to the shape of the first protrusion 2 can be formed in the cast-in-place cavity of the prefabricated part 4. When the prefabricated part 4 is manufactured and assembled on site, the vertical steel bars of the lower-layer prefabricated part extend into the mortises 3 in the cast-in-situ cavities at the bottoms of the upper-layer prefabricated parts, then the on-site pouring is carried out, and the mortises 3 are filled with new concrete 5 and combined with old concrete 6 to form a mortise-tenon structure, and the mortise-tenon structure is wider at one side close to the old concrete 6 and narrower at one side close to the new concrete 5, so that the combination of the new concrete 5 and the old concrete 6 is firmer, the integrity is better, the connection strength is higher, and the punching is not needed. Of course, in some embodiments, the mortises 3 may not be embedded with vertical rebars, and only serve as keyways for improving the connection strength.

The first protrusion 2 may be a dovetail or a circular dovetail. The former is a dovetail joint formed by extending from the surface of the core mold body 1 in a straight line in a direction away from the core mold body 1 and gradually increasing in width until reaching the end of the first protrusion 2 (see fig. 1). The latter extends from the surface of the core mold body 1 to the middle section of the first protrusion 2 in a direction away from the core mold body 1 in an arc shape and gradually increases in width, and then continues to extend to the end of the first protrusion 2 in a direction away from the core mold body 1 in an arc shape and gradually narrows in width until reaching the end of the first protrusion 2, thereby forming a round tenon (as shown in fig. 4).

In some embodiments, the mandrel body 1 is further provided with a second protrusion 7 for forming a groove for accommodating the prefabricated member reinforcing bar; the second protrusions 7 are provided on both sides of the core mold body 1, and the first protrusions 2 are provided in the middle of the core mold body 1.

The embodiment also provides the prefabricated part manufactured by the prefabricated part core mold, wherein a cast-in-situ cavity is formed in the prefabricated part, and a mortise is formed in the inner wall of the cast-in-situ cavity, so that cast-in-situ concrete enters the cast-in-situ cavity and then forms a tenon corresponding to the mortise, and a mortise and tenon structure is formed. The mortise and tenon structure can be a dovetail mortise and tenon joint or a round mortise and tenon joint.

Specific examples are set forth herein to illustrate the utility model in detail, and the description of the above examples is only for the purpose of aiding in understanding the core concept of the utility model. It should be noted that any obvious modifications, equivalents, or other improvements to those skilled in the art without departing from the inventive concept are intended to be included in the scope of the present utility model.

Claims

1. A preform core mold, comprising: the core die body is provided with a first bulge serving as a tenon, so that a mortise capable of accommodating the prefabricated member steel bars is formed in the prefabricated member, and then cast-in-place concrete is filled into the mortise to form a mortise and tenon structure.

2. A preform core mold according to claim 1, wherein the first protrusion extends from the core mold body surface in a straight line in a direction away from the core mold body and gradually increases in width until reaching an end of the first protrusion, thereby forming a dovetail joint.

3. A preform core mold according to claim 1, wherein the first protrusion extends from the core mold body surface in an arc surface direction away from the core mold body and gradually increases in width to the middle section of the first protrusion, and then continues to extend in an arc surface direction away from the core mold body and gradually narrows in width until reaching the end of the first protrusion, thereby forming a round tenon.

4. A preform core mold according to claim 1, wherein the core mold body is further provided with a second protrusion for forming a groove for accommodating a preform reinforcing bar; the second protrusions are arranged on two sides of the core die body, and the first protrusions are arranged in the middle of the core die body.

5. A prefabricated part manufactured by the prefabricated part core mold according to claim 1, wherein the prefabricated part is internally provided with a cast-in-situ cavity, and a mortise is formed in the inner wall of the cast-in-situ cavity, so that cast-in-situ concrete enters the cast-in-situ cavity and then forms a tenon corresponding to the mortise, thereby constructing a mortise and tenon structure.