CN2064796U

CN2064796U - Concrete testing lump specimen

Info

Publication number: CN2064796U
Application number: CN 89211620
Authority: CN
Inventors: 何曙初
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-09-15
Filing date: 1989-09-15
Publication date: 1990-10-31

Abstract

The utility model relates to a concrete test block mould which is a mould used for forming a concrete test block in civil engineering. The concrete test block mould is surrounded by four upright plates (1) and a bottom plate. The existing concrete test block mould has a demoulding difficulty caused by that the shaft line of a locating pin is parallel to the side surface of a concrete test block. The utility model improves the defect. The locating pin is changed into a rabbet, or the locating pin is changed to be arranged in the position where the locating pin and the side surface of the concrete test block form an included angle of 45 DEG, and a locking bolt (3) is changed to be arranged in the position showed in a figure 1. Therefore, the demould is easy, and the concrete test cube is not easy to damage during demould. A connecting bolt (2) can be replaced by integral casting.

Description

Concrete testing lump specimen

The utility model is a kind of concrete test block mould, is to be used for the mould of moulding concrete test block in the civil engineering.

The concrete test block mould is surrounded by four risers and a base plate.Existing concrete test block mould, the combination between four risers (1) are except that two places have adopted connecting bolt (2), and all the other two places have adopted alignment pin (7), and the axis of alignment pin (7) is parallel with the plate face of two risers (1).Do not consider that base plate is only with regard to the form removal of four risers (1), to allow alignment pin (7) from dowel hole, withdraw as not unclamping binder bolt (2), just must allow riser move, when this direction is moved, have between two riser plate faces and the concrete test block side and can produce very big frictional resistance because of rubbing mutually along the axis direction of alignment pin (7).This frictional resistance makes form removal very difficult just.

The purpose of this utility model is to eliminate or to reduce the frictional resistance between the riser plate face and concrete test block side in the form removal process, thereby makes form removal become easy.

In order to reach this purpose, the utility model takes to avoid in the form removal process riser along the method for concrete test block flank movement, promptly takes to allow when removing riser the direction of motion of riser and the arbitrary side of the concrete test block method of (optimum angle is 45 °) that forms an angle.Concrete implementation method can be to make the alignment pin axis be not parallel to the arbitrary side of concrete test block and form an angle with it (optimum angle is 45 °), perhaps cancels alignment pin and the combination (these combinations can not cause riser moves along arbitrary side surface direction of concrete test block in the form removal process) of using other instead.

The utility model is compared with existing concrete test block mould, owing to eliminate or reduced friction between riser plate face and the concrete test block side, serviceability rate when making concrete formation improves (make concrete test block be difficult for unfilled corner in the form removal process, fall rib), makes the phenomenon that form removal is easy and avoided existing concrete test block mould alignment pin to fracture easily.

Fig. 1 is the schematic diagram of the utility model embodiment.Fig. 2, Fig. 3, Fig. 4, Fig. 5 are the sectional views of the direction of arrow among Fig. 1, and wherein Fig. 3 is the sectional view of existing concrete test block mould, and Fig. 2, Fig. 4, Fig. 5 are the sectional view of three embodiment of the utility model.

First embodiment of the present utility model makes alignment pin (7) into seam (6), make lock bolt (4) into lock bolt (3) simultaneously, when the difference of two kinds of lock bolts is to be in locking state, the axis of lock bolt (4) be parallel to two riser plate faces and the axis of lock bolt (3) and four riser plate faces all not parallel (with the optimum angle of four riser plate faces be 45 °).

Second embodiment of the present utility model makes alignment pin (7) into alignment pin (8), the difference of two kinds of alignment pins be that the axis of alignment pin (7) is parallel to two riser plate faces and the axis of alignment pin (8) and four riser plate faces all not parallel (with four riser plate face optimum angles be 45 °), make lock bolt (4) into lock bolt (3) simultaneously.

The 3rd embodiment of the present utility model makes alignment pin (7) into chase mortise (5), in the process that tenon withdraws from from groove, riser can be because of producing very big frictional resistance along moving with the uneven direction in concrete test block side along the concrete test block flank movement during form removal.

In addition, the combination that two places are formed by connecting bolt (2) between four risers also can change by welding or metal sheet bending or integral cast and replaces.

Claims

1, a kind of concrete test block mould, be to be used for the mould of moulding concrete test block in the civil engineering, surround by four risers [1] and a base plate, when it is characterized in that (as not considering that base plate is only with regard to the dismounting of four risers) in the form removal process splits into two two continuous two parts when do not unclamp connecting bolt [2] (refer to riser do not take apart in the connection at this place) when not having connecting bolt [2] and with four risers, arbitrary side of the direction of motion of riser and concrete test block is not parallel.

2, device according to claim 1, it is characterized in that axis and the plate face of four piece risers (1) of lock bolt (3) when being in locking state is all not parallel, seam (6) or alignment pin (8) (axis of alignment pin and four riser plate faces are all not parallel) have been used in the combination between the riser simultaneously.

3, device according to claim 1 is characterized in that chase mortise (5) has been used in the combination between the riser (1).