CN209690309U - An integrated concrete slump detection device - Google Patents

Abstract

The utility model discloses a kind of integral type concrete slump detection devices, including bottom plate, fixed link is vertically installed on bottom plate, telescopic rod is slidably connected in fixed link, laser range finder is connected on telescopic rod, the probe of laser range finder is fixed with circular platform type slump cone towards bottom plate, the other end of telescopic rod.The advantages of slump that is convenient, accurately detecting cement concrete that the utility model has, reduction manual operation.

Description

An integrated concrete slump detection device

technical field

The utility model relates to the field of civil engineering material experiment devices, in particular to a concrete slump detection device.

Background technique

Civil engineering materials refer to various materials used in civil engineering. Concrete is an important class of civil engineering materials. Concrete slump mainly refers to the plasticizing performance and pumpability of concrete. The factors affecting concrete slump are mainly There are gradation changes, water content, weighing deviation of weighing instruments, the amount of admixtures, and the temperature of cement that is easily overlooked.

Most of the existing experimental devices are composed of a truncated slump cylinder, a funnel, a tamping rod and a scale. There are fixed bases on both sides of the bottom of the slump cylinder. When in use, the operator needs to step on the fixed base with both feet, and the other person puts the concrete sample into the cylinder and compacts it, then lifts the slump cylinder, and the measuring cylinder The height difference between the height and the highest point of the concrete sample after slumping is the slump value of the concrete sample.

The existing device is too simple, and has disadvantages such as high requirements on the ground of the experimental environment, more manual operations, weak contact between the bottom of the slump cylinder and the ground, and inaccurate height measurement.

Utility model content

In order to overcome the deficiencies and inherent defects of the existing experimental devices, the utility model proposes an integrated concrete slump detection device.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions to achieve:

1. An integrated concrete slump detection device, characterized in that: it includes a base plate, a fixed rod is vertically arranged on the base plate, a telescopic rod is slidably connected to the fixed rod, a laser range finder is connected to the telescopic rod, and the laser range finder The probe faces the bottom plate, and the other end of the telescopic rod is fixedly connected with a conical slump cylinder.

The bottom plate can be a rectangular iron plate to separate the concrete from the ground, avoiding the influence of the dryness and humidity of the ground and dust impurities on the workability of the concrete, and ensuring the stability of the device.

Preferably, the telescopic rod is fixedly connected to the fixed rod through a sliding sleeve, and the height of the sliding sleeve on the telescopic rod is adjustable.

Preferably, the telescopic rod is welded to the frustum-shaped slump cylinder.

The left end of the telescopic rod is connected with the sliding sleeve. The middle part of the telescopic rod can be equipped with a laser rangefinder, and the right end is welded with the circular table-shaped slump cylinder. The telescopic rod can drive the slump cylinder to move left and right, and at the same time, it can also move up and down with the sliding sleeve .

Preferably, fixed pedals are fixedly connected to both sides of the cone-shaped slump cylinder. Before the start of the experiment, fasten the fixed pedals on both sides of the conical slump cylinder with fixing bolts, so that the slump cylinder is fixed on the bottom plate.

Preferably, a funnel is also included, and the funnel is detachably connected to the top of the truncated slump cylinder. It is convenient to add concrete samples into the cone-shaped slump cylinder and tamp it with a tamp until the slump cylinder is filled.

The laser range finder is a phase method range finder, which is used to measure the distance between the position of the instrument and the target below: when the slump cylinder is lifted up for the first time, the distance between the instrument and the base plate is measured; when the laser range finder moves When reaching above the concrete specimen, the instrument measures the distance from the top of the concrete specimen.

The beneficial effects of the utility model:

The utility model has the advantages of conveniently and accurately detecting the slump of cement concrete and reducing manual operations.

Description of drawings

Fig. 1 is the overall front view of the utility model.

Fig. 2 is a schematic diagram of the lifting operation of the slump cylinder of the present invention.

Fig. 3 is a working schematic diagram of the laser range finder of the present invention.

Detailed ways

As shown in Fig. 1, the utility model comprises fixed rod 1, telescopic rod 2, sliding sleeve 3, laser range finder 4, base plate 5, funnel 6, round table type slump cylinder 7, fixed bolt 8 and fixed pedal 9. The fixed rod 1 is fixed on the base plate 5, and the telescopic rod 2 is connected with the fixed rod 1 through the sliding sleeve 3, and the sliding sleeve 3 can move up and down on the fixed rod 1. The laser rangefinder 4 is arranged below the middle part of the telescopic rod 2 . Conical truncated slump cylinder 7 is welded on telescopic rod 2 right-hand sides, becomes an integral structure. Before the experiment starts, adjust the sliding sleeve 3 so that the truncated slump cylinder 7 is in contact with the bottom plate 5, and fasten the fixed pedals 9 on both sides of the truncated slump cylinder with fixing bolts 8, so that the slump cylinder is fixed on the bottom plate . Add a funnel 6 on the top of the slump cylinder, add concrete samples and tamp it with a tamp until the slump cylinder is filled.

Figure 2 shows the schematic diagram of the lifting of the slump cylinder of the utility model. The funnel is removed, the constraint of the bottom fixing bolt 8 is released, and the sliding sleeve 3 is adjusted to lift the slump cylinder, so that the concrete will slump due to its own weight. Fix the sliding sleeve 3 to keep the telescopic rod 2 at a fixed height, and then use the laser range finder 4 to measure the distance of the instrument from the base plate at this time.

Figure 3 shows the working diagram of the laser range finder of the utility model, adjust the telescopic rod 2, move the laser range finder 4 to the top of the concrete test piece, and measure the distance of the instrument according to the top of the concrete test piece.

Finally, subtract the distance from the top of the concrete specimen to the distance from the bottom plate of the instrument to obtain the slump value of the concrete specimen.

Claims (2)

1. An integrated concrete slump detection device, characterized in that: it comprises a base plate, a fixed rod is vertically arranged on the base plate, a telescopic rod is slidably connected on the fixed rod, and a laser range finder is connected on the telescopic rod, and the laser range finder The probe is facing the bottom plate, and the other end of the telescopic rod is fixedly connected with the circular table-shaped slump cylinder; the telescopic rod is welded to the circular table-shaped slump cylinder, and the telescopic rod is fixedly connected to the fixed rod through a sliding sleeve, and the sliding sleeve is on the telescopic rod height adjustable; The detection device also includes a funnel, which is detachably connected to the top of the truncated slump cylinder. 2. An integrated concrete slump detection device according to claim 1, characterized in that: fixed pedals are fixedly connected to both sides of the circular truncated slump cylinder.