CN204944964U - A kind of pocket penetration test instrument - Google Patents

Abstract

The utility model discloses a portable needle penetration measuring instrument, which comprises a dial indicator arranged on a support frame, a weight, a needle rod and a circular tube, the needle rod passes through the circular tube, and the lower part of the needle rod The needle tip can be inserted into the sample, the weight is placed on the upper end of the needle bar, and the needle penetration of the sample is determined by measuring the vertical displacement of the weight and the needle bar with a dial indicator. The utility model can accurately measure the penetration of samples, has simple and compact structure, reasonable design, simple manufacture, light weight and portability, and is favorable for popularization and use.

Description

A portable penetrometer

technical field

The utility model belongs to the technical field of penetration performance testing of materials, in particular to a portable penetration tester.

Background technique

Penetration can be used to characterize the softness and hardness of asphalt, ointment, rubber and other materials. Penetration is measured by measuring the depth of the needle tip vertically penetrating into the sample under a certain load. At present, the instruments for measuring needle penetration on the market have disadvantages such as complex structure, high manufacturing cost, and not easy to carry. Therefore, it is necessary to design a penetrometer with reasonable structure, simple manufacture and portability. Utilize dial gauge to measure the up-and-down displacement of needle bar to measure the measuring instrument of the needle penetration of sample as yet not seen in the report. A dial indicator is a commercially available displacement measuring instrument that converts the general linear displacement into the rotational movement of the pointer through gears or levers, and then reads on the dial.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art, and provide a portable penetration measuring instrument, which has a simple structure, reasonable design, simple manufacture, low manufacturing cost, easy to carry, and can effectively treat asphalt, oil, etc. The penetration of paste, rubber and other materials is measured.

In order to achieve the above object, the technical solution adopted by the utility model is: a portable penetrometer, which is characterized in that: it includes a dial indicator, a weight, a needle rod and a round tube arranged on the support frame, the The needle rod passes through the circular tube, and the circular tube is fixed on the support frame. The circular tube guides the needle rod to move up and down. The bottom of the weight has a blind hole with a diameter larger than that of the needle rod. The needle rod The upper part of the needle is inserted into the blind hole at the bottom of the weight, so that the weight can be placed stably on the needle bar. The needle tip of the lower part of the needle bar can be inserted into the sample, and the needle penetration of the sample is measured by the up and down displacement of the needle bar. The round-shaped measuring head at the bottom of the dial indicator is placed on the top of the weight to measure the vertical displacement of the weight and the needle bar, and the dial indicator is fixed on the support frame.

The above-mentioned portable penetrometer is characterized in that: the weight, the needle rod and the round tube are made of stainless steel.

The above-mentioned portable penetrometer is characterized in that: the cross-section of the needle bar is cylindrical, one end of the needle bar is in the shape of a needle point, and the other end is in the shape of a flat head.

Compared with the prior art, the utility model has the following advantages:

1. The utility model uses a dial gauge to measure the up and down displacement of the needle bar, which can accurately measure the needle penetration of the sample.

2. The needle bar of the utility model can be taken out from the round tube, and the weight can be taken off from the needle bar, so that the parts of the needle penetration measuring instrument can be disassembled and then put into the packing box, and the utility model The structure is small and light, which makes the penetrometer easy to carry.

3. The utility model has the advantages of simple structure, reasonable design and simple manufacture, which is conducive to popularization and use.

Below by accompanying drawing and embodiment, the utility model is described in further detail.

Description of drawings

Fig. 1 is a schematic diagram of installation and connection of a support frame, a dial indicator, a weight, a needle bar and a circular tube of the present invention.

Fig. 2 is a perspective view of the needle bar.

Fig. 3 is a perspective view of a weight.

Explanation of reference signs:

1—support frame; 2—dial indicator; 3—weight; 4—needle bar; 5—round tube; 6—sample.

detailed description

As shown in Fig. 1, Fig. 2 and Fig. 3, the utility model comprises a dial indicator 2, a weight 3, a needle bar 4 and a circular tube 5 arranged on a support frame 1, and the needle bar 4 passes through the circular tube 5 , the round tube 5 is fixed on the support frame 1, the round tube 5 guides the up and down movement of the needle bar 4, the bottom of the weight 3 has a blind hole with a diameter greater than the diameter of the needle bar 4, and the needle bar The upper part of 4 is inserted into the blind hole at the bottom of the weight 3, so that the weight 3 can be placed stably on the needle bar 4, and the needle tip of the lower part of the needle bar 4 can be inserted into the sample 6, and measured by the up and down displacement of the needle bar 4 For the needle penetration of the sample, the round head-shaped measuring head at the bottom of the dial gauge 2 is placed on the top of the weight 3 to measure the up and down displacement of the weight 3 and the needle bar 4, and the dial gauge 2 is fixed on the support frame 1 .

In this embodiment, the weight 3, the needle bar 4 and the round tube 5 are made of stainless steel.

In this embodiment, the cross section of the needle bar 4 is cylindrical, one end of the needle bar 4 is in the shape of a needle point, and the other end is in the shape of a flat head.

The working principle of the utility model is: when in use, first pinch the needle bar 4 by hand and lift up the needle point, then place the sample 6 on the bottom platform of the support frame 1, then pinch the needle bar 4 by hand and move down Make the needle tip just touch the upper surface of the sample 6, record the reading of the dial indicator 2, and then let go, so that the needle bar 4 presses the needle tip of the needle bar 4 into the sample 6 under the gravity of the weight 3, and the round tube 5 It acts as a guide for the up and down movement of the needle bar 4. After a period of time, when the needle bar 4 no longer moves down, write down the reading of the dial gauge 2, according to the reading of the dial gauge 2 and the needle bar 4 at the initial position. When the rod 4 no longer moves down, the reading of the dial indicator 2 can obtain the penetration of the sample 6. Sample 6 can be asphalt, ointment, rubber and other materials.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural transformations made to the above embodiments according to the technical essence of the present utility model still belong to Within the scope of protection of the technical solution of the utility model.

Claims (3)

1. A portable penetrometer, characterized in that it includes a dial indicator (2), a weight (3), a needle bar (4) and a round tube (5) arranged on the support frame (1) , the needle bar (4) passes through the round tube (5), the round tube (5) is fixed on the support frame (1), and the round tube (5) guides the up and down movement of the needle bar (4), The bottom of the weight (3) has a blind hole with a diameter greater than that of the needle rod (4), and the upper part of the needle rod (4) is inserted into the blind hole at the bottom of the weight (3), so that the weight (3) It can be stably placed on the needle bar (4), the lower tip of the needle bar (4) can be inserted into the sample (6), and the needle penetration of the sample can be measured by the up and down displacement of the needle bar (4). The round-shaped measuring head of the lower part of the dial indicator (2) is placed on the top of the weight (3) to measure the up and down displacement of the weight (3) and the needle bar (4), and the dial indicator (2) is fixed on the support frame ( 1) on. 2. A portable penetrometer according to claim 1, characterized in that: said weight (3), needle rod (4) and round tube (5) are made of stainless steel. 3. A portable penetrometer according to claim 1, characterized in that: the cross-section of the needle bar (4) is cylindrical, one end of the needle bar (4) is in the shape of a needle point, and the other end is It is flat head shape.