A concrete test block mold convenient to disassemble

Abstract

The utility model provides a kind of concrete test block mould convenient to dismount, solve the multiple mould integral frame structure inside test block mutual restraint, leading to concrete test block and the total adhesion of mould inner wall and vacuum suction force far greater than single mould, leading to difficult to remove formwork, low efficiency, easily damage test block corner problem.The utility model adopts the core structure of two L-shaped vertical plate through bolt and butterfly nut connection, realized tool-free dismounting, operator only needs to tighten or loosen butterfly nut, can quickly complete the assembly and decomposition of mould, fundamentally solve the difficult to remove formwork, low efficiency and easily damage test block corner problem of traditional integral multiple mould due to vacuum suction and large adhesion.

Description

Technical Field

[0001] This utility model relates to the field of building engineering quality testing, and in particular to a concrete test block mold that is easy to assemble and disassemble. Background Technology

[0002] In construction engineering, concrete test blocks are an important basis for testing concrete strength. Standard cubic test blocks, cast using molds, are common test samples in laboratories and construction sites. Existing concrete test block molds are mainly divided into single-unit molds and multi-unit molds. For single-unit molds, their structure is usually a single-opening cubic frame structure. Due to the structural characteristics of its single cavity, stress concentration occurs, and the adhesion and vacuum adsorption forces between the test block and the inner wall of the mold are relatively easy to overcome. When demolding, simply flip the mold together with the test block, and then gently tap the mold with a rubber mallet. The vibration and gravity will allow the test block to be removed from the mold. The requirements for the mold's assembly and disassembly structure are not high.

[0003] In practical applications, multi-unit molds are more commonly used to improve efficiency. Compared with single molds, their integral frame structure causes the internal test blocks to restrict each other, resulting in a much greater total adhesion force and vacuum adsorption force between the concrete test block and the inner wall of the mold than single molds. This makes demolding difficult and inefficient, requiring strong hammering, which can easily damage the edges and corners of the test blocks and affect the accuracy of the test. Utility Model Content

[0004] To address the problem in the prior art where the integrated frame structure of multi-unit molds causes internal test blocks to restrict each other, resulting in a much greater total adhesion force and vacuum adsorption force between the concrete test block and the inner wall of the mold than a single-unit mold, leading to difficulties in demolding, low efficiency, and easy damage to the edges and corners of the test blocks, this utility model proposes a concrete test block mold that is easy to assemble and disassemble.

[0005] The technical solution of this utility model is: a concrete test block mold that is easy to assemble and disassemble, including an annular rectangular shell, a bottom plate and multiple partitions. The annular rectangular shell is composed of two L-shaped vertical plates with the same structure. Each L-shaped vertical plate is fixedly provided with a connecting vertical plate at the end of the splicing end. The two L-shaped vertical plates are fastened together by bolts and wing nuts passing through the connecting vertical plates. The bottom of the L-shaped vertical plate has a bottom edge that extends outward along its length. A groove is provided on the inner side of the bottom edge that extends along its length. The horizontal projected area of ​​the bottom plate is larger than the internal horizontal area of ​​the annular rectangular shell. The edge of the bottom plate is embedded in the groove of the bottom edge. The partition is vertically fixed on the base plate. The inner wall of the L-shaped vertical plate has vertical grooves at the corresponding positions of the front and rear of the partition, and the front and rear ends of the partition are embedded in the vertical grooves.

[0006] Preferably, the bolt is a hexagonal head bolt, and a hexagonal sleeve corresponding to the through hole position is fixed on one side of the bolt head on the connecting vertical plate, and the bolt head is embedded in the hexagonal sleeve.

[0007] Preferably, there are two partitions, which divide the interior of the annular rectangular shell into three cubic test block slots of the same size.

[0008] Preferably, the top center of the annular rectangular shell is fitted with a U-shaped clip with a downward opening structure.

[0009] Preferably, the L-shaped vertical plate, the connecting vertical plate and the bottom edge are integrally injection molded from engineering plastics, and the partition and the bottom plate are integrally injection molded from engineering plastics.

[0010] Preferably, the connecting vertical plate extends outward at a 135° angle to the surface of the L-shaped vertical plate.

[0011] Advantages of this utility model: (1) This utility model adopts a core structure in which two L-shaped vertical plates are connected by bolts and wing nuts, realizing tool-free assembly and disassembly. Operators only need to tighten or loosen the wing nuts to quickly complete the assembly and disassembly of the mold, which fundamentally solves the problems of difficult demolding, low efficiency and easy damage to the edges of the test block caused by the large vacuum adsorption and bonding force of traditional integrated multi-unit molds.

[0012] (2) This utility model forms a rigid overall frame by the linkage clamping and fixing of the bottom plate edge and the bottom groove, and the precise cooperation between the two ends of the partition and the vertical groove. This structure can effectively resist the lateral pressure of concrete, prevent the partition from bending and the shell from bulging, and ensure that the dimensional accuracy of multiple test block slots is consistent, thereby ensuring the molding quality of concrete test blocks and meeting the standard testing requirements. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the overall structure of this utility model; Figure 3 This utility model Figure 1 A schematic diagram of the structure of the L-shaped vertical plate.

[0015] In the figure: 1. Annular rectangular shell; 101. L-shaped vertical plate; 102. Connecting vertical plate; 103. Through hole; 104. Bottom edge; 105. Groove; 2. Base plate; 3. Partition plate; 4. Bolt; 401. Hexagonal sleeve; 5. Wing nut; 6. Test block groove; 7. Vertical groove; 8. U-shaped clip. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example 1: A concrete test block mold that is easy to assemble and disassemble, such as Figure 1-3 As shown, it includes an annular rectangular shell 1, a base plate 2, and multiple partitions 3. The annular rectangular shell 1 has a cuboid frame structure and is composed of two identical L-shaped vertical plates 101. Each L-shaped vertical plate 101 is composed of a long side plate and a short side plate that are perpendicular to each other. The L-shaped vertical plates 101 are integrally molded using high-strength ABS engineering plastic through injection molding, which can reduce the number of parts in the mold, reduce manufacturing costs, and simplify the assembly process.

[0018] To achieve rapid connection and fixation of the two L-shaped vertical plates 101, a connecting vertical plate 102 is integrally injection molded at the splicing end of each L-shaped vertical plate 2. The connecting vertical plate 102 extends outward at a 135° angle to the surface of the L-shaped vertical plate 101. Both connecting vertical plates 102 have two through holes 103 spaced vertically. When the two L-shaped vertical plates 101 are spliced, the adjacent through holes 103 correspond one-to-one. A bolt 4 is inserted into the two adjacent through holes 103. The head of the bolt 4 is larger than the through hole 103. The bolt 4 passes through the two adjacent through holes and is threaded with a wing nut 5. The wing nut 5 can clamp and fix the splicing part of the two L-shaped vertical plates 2 together through the head of the bolt 4 during the tightening process, forming a rigid integral annular rectangular shell 1. At the same time, the design of the wing nut 5 allows the operator to complete the tightening and disassembly by hand without the aid of any special tools, improving work efficiency and solving the problem of difficult demolding of multi-unit molds.

[0019] To prevent the bolt 4 from spinning freely during the tightening process of the wing nut 5, which would make the tightening operation difficult, a hexagonal head bolt with a hexagonal head is selected for the bolt 4. Correspondingly, a hexagonal sleeve 401 corresponding to the position of the through hole 103 is integrally injection molded on one side of the bolt head of the connecting vertical plate 102. The head of the bolt 4 can be embedded in the hexagonal sleeve 401, which restricts the rotational freedom of the bolt 4 in the circumferential direction. This allows the tightening torque to be effectively applied to the wing nut 5 during manual operation, causing it to move along the thread of the bolt 4, thereby achieving rapid tightening or loosening of the connecting vertical plate 102.

[0020] To fix the base plate 2, the bottom of the L-shaped vertical plate 101 is integrally injection molded with a bottom edge 104 that extends outward along its length. A groove 105 extending along its length is opened on the inner side of the bottom edge 104. Both the bottom edge 104 and the groove 105 are integrally injection molded with the L-shaped vertical plate 101, further improving the mold production efficiency. The base plate 2 is a rectangular plastic plate of the same material as the L-shaped vertical plate 101. The horizontal projected area of ​​the base plate 2 is larger than the internal horizontal area enclosed by the bottom frame of the annular rectangular shell 1, so that the edge of the base plate 2 can be embedded and supported in the groove 105 of the bottom edge 104. When the two L-shaped vertical plates 101 are tightened and fixed by bolts 4 and wing nuts 5, the bottom edge 104 of the L-shaped vertical plate 101 will simultaneously clamp the edge of the base plate 2 inward, realizing the synchronous installation and fixing of the base plate 2 and the annular rectangular shell 1. No other fasteners are needed to fix the base plate 2, which simplifies the structure, further improves the assembly efficiency, and further facilitates the disassembly and assembly of the concrete test block mold.

[0021] Multiple partitions 3 are integrally injection molded with the base plate 2 and vertically fixed on the base plate 2. The multiple partitions 3 divide the interior of the annular rectangular shell 1 into multiple cubic test block slots 6 of the same size, which are used to simultaneously produce multiple concrete test blocks.

[0022] The number of partitions 3 is preferably two. The two partitions 3 divide the annular rectangular shell 1 into three cubic test block slots 6 of the same size. This number design can meet the requirement of three test blocks for a set of conventional engineering quality testing, while realizing single molding.

[0023] To prevent the partition plate 3 from bending laterally due to the lateral pressure of the concrete during pouring and vibration, vertical grooves 7 are provided on the inner wall of the L-shaped vertical plate 101 at positions corresponding to the front and rear of the partition plate 3. The vertical grooves 7 and the L-shaped vertical plate 101 are integrally injection molded. The front and rear ends of the partition plate 3 are embedded in the vertical grooves 7, so that the inner wall of the vertical grooves 7 can effectively constrain the left and right sides and the front and rear directions of the partition plate 3, and transfer the lateral pressure borne by the partition plate 3 to the more robust L-shaped vertical plate 101. This ensures that the partition plate 3 will not deform under stress, and guarantees the dimensional accuracy of all test block grooves 6 and the molding quality of the final test blocks.

[0024] To further enhance the overall rigidity of the mold and prevent the middle part of the annular rectangular shell 1 from bulging outward under the lateral pressure of concrete, a U-shaped clip 8 with a downward opening structure is provided at the top center of the annular rectangular shell 1. The U-shaped clip 8 is preferably made of rigid metal. The two clip arms of the U-shaped clip 8 are respectively clipped on the front and rear sides of the annular rectangular shell 1. In addition, the top crossbeam of the U-shaped clip 8 provides a flat reference surface, which can be used to scrape off excess concrete along the top of the mold after the concrete is poured, thus achieving a leveling function. It serves two purposes in one.

[0025] Working principle: When assembling the concrete test block mold, place two L-shaped vertical plates 101 symmetrically on the base plate 2. Then, insert the edge of the base plate 2, which is fixed with partitions 3, into the groove 105 of the bottom edge 104 of the L-shaped vertical plate 101. At the same time, the ends of all partitions 3 are also accurately slid into the vertical grooves 7 inside the L-shaped vertical plate 101. Then, insert the head of the hexagonal bolt 4 into the hexagonal sleeve 401 on one side, so that its end passes through the corresponding through holes 103 on the connecting vertical plates 102 on both sides. Then, screw on the wing nut 5 at the other end and tighten the wing nut 5 by hand to tightly pull the connecting vertical plates 102 of the two L-shaped vertical plates 101 together. At the same time, drive the bottom edge 104 to move inward, firmly clamp the edge of the base plate 2 in the groove 105, and lock all parts into a rigid whole. Then, pour concrete into the test block groove 6 of the mold, vibrate and smooth it, and then clip the U-shaped clip 8 into the middle of the top of the mold.

[0026] After the concrete has initially set, loosen and remove the wing nut 5 and bolt 4 by hand, separate the two L-shaped vertical plates 101, and the concrete test block mold is disassembled. The adhesive force and vacuum adsorption force that previously acted on the interior of the integral mold are released, and the complete test block group can be taken out.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims and not by the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A concrete test block mold that is easy to assemble and disassemble, characterized in that: It includes an annular rectangular shell (1), a bottom plate (2) and multiple partitions (3). The annular rectangular shell (1) is composed of two L-shaped vertical plates (101) with the same structure. Each L-shaped vertical plate (101) is fixedly provided with a connecting vertical plate (102) at the end of the splicing end. The two L-shaped vertical plates (101) are fastened to the butterfly nut (5) by bolts (4) passing through the connecting vertical plate (102). The bottom of the L-shaped vertical plate (101) is provided with a bottom edge (104) that extends outward along its length direction. The inner side of the bottom edge (104) is provided with a groove (105) that extends along its length direction. The horizontal projected area of ​​the bottom plate (2) is larger than the internal horizontal area of ​​the annular rectangular shell (1). The edge of the bottom plate (2) is embedded in the groove (105) of the bottom edge (104). The partition (3) is vertically fixed on the base plate (2). The inner wall of the L-shaped vertical plate (101) is provided with vertical grooves (7) at the corresponding positions of the partition (3) at the front and back. The front and back ends of the partition (3) are embedded in the vertical grooves (7).

2. The easily detachable concrete test block mold according to claim 1, characterized in that: The bolt (4) is a hexagonal head bolt. The connecting vertical plate (102) is fixedly provided with a hexagonal sleeve (401) corresponding to the position of the through hole (103) on one side of the bolt (4) head. The head of the bolt (4) is embedded in the hexagonal sleeve (401).

3. The easily detachable concrete test block mold according to claim 1, characterized in that: There are two partitions (3), which divide the interior of the annular rectangular shell (1) into three cubic test block slots (6) of the same size.

4. The easily detachable concrete test block mold according to claim 1, characterized in that: The top center of the annular rectangular shell (1) is fitted with a U-shaped clip (8) with a bottom opening structure.

5. A concrete test block mold that is easy to assemble and disassemble according to claim 1, characterized in that: The L-shaped vertical plate (101), the connecting vertical plate (102) and the bottom edge (104) are integrally injection molded from engineering plastics, and the partition plate (3) and the bottom plate (2) are integrally injection molded from engineering plastics.

6. A concrete test block mold that is easy to assemble and disassemble according to claim 1, characterized in that: The connecting vertical plate (102) extends outward at a 135° angle to the surface of the L-shaped vertical plate (101).

Images