CN204255479U - Adhering film many bellows ground scale - Google Patents

Abstract

The utility model provides an adhesive film multi-capsule floor scale, which comprises two rigid flat plates 1 and 2 placed in parallel up and down, more than two thin film capsules made of impermeable and difficult-to-extend flexible materials, a pressure Table, the membrane capsule and the two opposite faces of the two rigid plates together form a closed space, the closed space is filled with liquid, the pressure gauge communicates with the closed space, and the closed space is cake-shaped; the membrane capsule and the rigid plates one, The second rigid plate is bonded, or the film capsule is only in contact with the first rigid plate and the second rigid plate respectively. It has the advantages of no wear, large measuring range per unit area, high precision, good stability, small height, small volume, not affected by temperature, no component aging, and low price.

Description

Adhesive Film Polybag Floor Scale

technical field

The utility model relates to an adhesive film multi-capsule floor scale.

Background technique

The existing weighing methods mainly include: 1. Mechanical lever type; 2. Strain ceremony; 3. Jack with watch. Wherein, the shortcoming of the equipment of mechanical lever type is: complex structure, easy wear and tear of knife edge. The disadvantages of the equipment of the strain ceremony are: it is easily affected by temperature, there is a problem of component aging, and the price is high. The disadvantage of the device with table jack is that the measurement accuracy is very low due to the influence of sealing resistance.

Utility model content

The purpose of the utility model is to provide a ground weighing instrument without wear, not affected by temperature, high precision, large weighing capacity per unit area, high reliability, no component aging, simple structure, small volume and low price.

The technical solution of the utility model is:

An adhesive film multi-capsule floor scale, comprising two rigid plates 1 and 2 placed in parallel up and down, more than two film capsules made of impermeable and non-extensible flexible materials, a pressure gauge, the film and The two facing surfaces of the two rigid plates together form a closed space, which is filled with liquid, and the pressure gauge communicates with the closed space, and the closed space is cake-shaped; the membrane capsule is respectively bonded to the first rigid plate and the second rigid plate , or the membrane capsule is only in contact with rigid plate 1 and rigid plate 2 respectively.

Further, the Euler characteristic of this closed space is the same as that of a sphere.

Further, there are at least three boss structures on the facing surfaces of the first rigid plate or the second rigid plate to limit the relative displacement of the two rigid plates.

Further, the boss structure specifically includes: a large hole on rigid plate 1 or rigid plate 2, a plate with a diameter larger than the large hole and a small hole, rigid plate 1 or rigid plate 2 is provided with a screw hole, a diameter Bolts smaller than the small holes pass through the small holes, and the bolts are flexibly connected to the first rigid plate and the second rigid plate, and the ends of the bolts are larger than the small holes and smaller than the large holes.

The beneficial effects of the utility model are: no wear, no component aging, no temperature influence, large weighing per unit area, high precision, high reliability, small volume, low height, simple structure and low price.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the connection of the film capsule and the rigid plate realized by bonding.

Fig. 2 is a structural schematic diagram of realizing the connection of the membrane capsule and the rigid plate with flanges and screws.

Fig. 3 is a schematic diagram of the boss structure in the embodiment.

Fig. 4 is a schematic structural view of an embodiment of the utility model.

Among them: 1-rigid plate 1, 2-rigid plate 2, 3-film capsule, 4-pressure gauge, 5-flange, 6-screw, 7-bolt.

Detailed ways

Preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

Example

This kind of adhesive film multi-capsule floor scale includes two rigid flat plates 1 and 2 parallel up and down, more than two thin film capsules 3 made of impermeable and difficult-to-extend flexible materials, a pressure gauge 4, As shown in Fig. 4, the membrane capsule 3 is between the two facing faces A1 and B1 of the two rigid plates, and the three together form a closed space, which is filled with liquid, and the pressure gauge 4 communicates with it.

More specifically, the two rigid plates one 1 and rigid plate two 2 are made of common steel plates, the film capsule 3 is made of impermeable chemical fiber cloth, and the film capsule 3 is placed between the two rigid plates, and is bonded or flanged. 5. Screw 6 connection. The film capsule 3 is bonded to the first rigid plate 1 and the second rigid plate 2 respectively, or the film capsule 3 is only in contact with the first rigid plate 1 and the second rigid plate 2 but not fixed.

Fig. 1 realizes the connection of film capsule 3 and rigid flat plate with the method of bonding, and in Fig. 1, the middle part of film capsule 3 is bonded with two rigid flat plates one 1, rigid flat plate two 2, and the remainder of film capsule 3 is not bonded with Rigid plate one 1, rigid plate two 2 bonding. Fig. 2 is to use flange 5 and screw 6 to realize the connection of membrane capsule 3 and rigid plate.

When the rigid plate is stressed, a certain pressure will be generated in the closed space, and the pressure gauge 4 shows the magnitude of the force by measuring the pressure. Enclosed spaces are pie-shaped. The section where the outer edge of the film capsule 3 is not in contact with the rigid flat plate is a semicircle with radius=R. Let the pressure = P, then the tensile stress of the film at this place = P × R. The stress elsewhere in the film is less. It can be seen from this that as long as R is small enough, the stress of the film is small enough. For this reason, the distance between A1 and the second rigid plate 21 needs to be small enough, and the area between A1 and the second rigid plate 21 is required to be large enough, so that the film is only in contact with the surfaces of A1 and B1.

Its principle is: the stress of the film material at the point not in contact with the rigid plate is proportional to the radius of curvature of this part, and the stress of other parts is smaller. When the distance between the first rigid plate 1 and the second rigid plate 2 is small, the radius of curvature is also small. Therefore, as long as the distance between the first rigid plate 1 and the second rigid plate 2 is small enough, the film can generate a sufficient pressure.

The strength of the existing chemical fiber cloth can fully meet the requirements of R=0.01m and P=2MP. This is equivalent to a load capacity per unit area of 200t/m, which is more than enough for general weighing.

In order to improve the measurement accuracy, the reading of the pressure gauge 4 is calibrated according to the actual measured value. Since the bending resistance of the film is very small, the measurement error due to the stiffness of the film is very small.

In order to prevent overload and facilitate movement, at least three boss structures are arranged on the A1 or/and B1 surface.

The boss structure is as shown in Figure 3: a large hole C is drilled on rigid plate 1 or rigid plate 2, and a small plate with a diameter greater than C and a small hole D is connected to A1 or B1, corresponding to D in Make a screw hole on the rigid plate 2 or the rigid plate 1, and a bolt 7 with a diameter smaller than D passes through D and is fixed on the rigid plate 2 or the rigid plate 1. The end of the bolt 7 is larger than D and smaller than C. 7 Only limit the excessive relative displacement of the two rigid plates.

A plurality of film capsules 3 ground scales are used for weighing simultaneously, as shown in Figure 4, wherein the rigid flat plates placed on the ground are connected as a whole. The upper rigid plate is also connected as one. It is also possible to replace the lower rigid plate with a solid ground.

Claims (4)

1. adhering film many bellows ground scale, it is characterized in that: comprise film capsule, a tensimeter that two stiffener plate one of upper and lower parallel placement and stiffener plate two, two or more are made with the impermeable flexible material not easily extended, film capsule and two stiffener plate two faces in opposite directions together constitute an enclosure space, liquid is filled with in enclosure space, tensimeter is communicated with this enclosure space, and enclosure space is pie; Film capsule is bonding with stiffener plate one, stiffener plate two respectively, or film capsule only contacts with stiffener plate one, stiffener plate two respectively.

2. adhering film many bellows ground as claimed in claim 1 scale, is characterized in that: the Euler characteristic of this enclosure space and the identical of sphere.

3. adhering film many bellows ground as claimed in claim 1 or 2 scale, is characterized in that: on the forward surface of stiffener plate one or stiffener plate two, total at least three boss structures limit the relative displacement of two stiffener plate.

4. adhering film many bellows ground as claimed in claim 3 scale, it is characterized in that, boss structure specifically comprises: a macropore in stiffener plate one or stiffener plate two, one piece of diameter is greater than macropore and has the plate of an aperture, stiffener plate one or stiffener plate two are provided with a screw, a diameter is less than the bolt of aperture through aperture, and bolt is movably connected in stiffener plate one, stiffener plate two respectively, and the end of bolt is greater than aperture and is less than macropore.