CN110057433A - A weighing device that can realize limit protection - Google Patents

Abstract

The invention relates to a weighing device capable of realizing limiting protection, which comprises a table board, an upper base plate, an upper ball support, a pressure bearing ball, a lower ball support, a shearing beam sensor, a connecting screw, a lower base plate, a supporting leg, a fixing plate, a lifting screw, a lifting nut, a limiting screw and a limiting gasket. And the four corners close to the rectangular table surface are respectively provided with a shearing beam sensor and a corresponding limiting protection and supporting part. When weighing, the weight of the weighed material is transmitted to the shearing beam sensor, and the shearing beam sensor is stressed to output a signal. When the material to be weighed is seriously unbalance-loaded, the limiting gasket sleeved with the limiting screw can prevent the table top from tilting to exceed the allowable height, and when the table top is subjected to overlarge transverse force due to external factors, the transverse displacement of the table top fastened together with the limiting screw can be limited by the unthreaded hole formed in the lower gasket. When in maintenance, the lifting nut is loosened, the lifting screw is rotated to enable the top end of the lifting screw to be in contact with the upper base plate, and the table top is supported. Thereby not only protecting the equipment, but also facilitating the overhaul of workers.

Description

A weighing device that can realize limit protection

technical field

The invention relates to the technical field of weighing, in particular to a weighing device that can realize limit protection.

Background technique

Rubber mixing in a rubber factory is an important link in the manufacture of rubber products. The smelted rubber will eventually go through the steps of pressing, applying release agent, cooling, and stacking weighing. During the stacking and weighing process, it often occurs that the platform of the weighing platform is lifted due to the deviation of the placement of the film and is damaged. Equipment or shear beam sensors; forklifts may also generate excessive lateral forces when placing an empty plastic table on the table or removing a full table from the table, causing the scale table to offset too much and damaging the equipment or shear beam sensor, affecting normal operation. In addition, due to the heavy platform of the weighing platform, the maintenance of the existing equipment is also very inconvenient.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a weighing device that can realize limit protection, so that the vertical up and down movement and the horizontal lateral movement of the weighing platform are limited within a certain range, and no need for maintenance. Manual lifting of heavier scale decks. It not only protects the equipment and sensors from damage, ensures the stable operation of the equipment, but also reduces the labor intensity of workers during maintenance, which is convenient for maintenance.

In order to achieve this purpose, the present invention adopts the following technical scheme: a weighing device that can realize limit protection, including a table top, an upper backing plate, an upper ball holder, a pressure-bearing ball, a lower ball holder, a shear beam sensor, and a connecting screw , lower backing plate, outriggers, fixing plate, lifting screw, lifting nut, limit nut, limit washer, limit screw, the table is rectangular, and the upper backing plate has four pieces, which are respectively welded on the lower part of the table The four corner positions of the upper ball support are inserted into the holes of the upper backing plate, the cylindrical pins of the lower ball support are inserted into the holes of the shear beam sensor, and the pressure-bearing balls are located in the upper ball support and the lower ball support. between the balls.

Further, the upper part of the support leg is welded with a lower backing plate, the lower part is welded with a fixing plate, and three threaded holes and one light hole are opened on the lower backing plate.

Further, the shear beam sensor is fixed to the two threaded holes of the lower backing plate with two connecting screws, and the lifting screw is screwed into another screw hole of the lower backing plate from the lower part of the lower backing plate and fastened by the lifting nut, and the lifting The gap between the top of the screw and the upper backing plate is about 5mm, and the thread length of the lifting screw is greater than the upper surface of the upper backing plate and the lower surface of the lower backing plate when the upper ball holder, pressure ball, lower ball holder and shear beam sensor are installed. The sum of the vertical spacing and the thickness of the lifting nut is about 15mm.

Further, the diameter of the light hole opened on the lower backing plate is larger than the diameter of the limit screw, and the diameter difference between the two is about 8mm. Then screw it into the threaded hole on the upper backing plate, the light hole on the lower backing plate and the threaded hole on the upper backing plate are located on the same center line, and the gap between the rear limit washer and the lower backing plate is about 2mm after tightening.

After adopting the technical scheme of the present invention, the following beneficial effects are brought:

The weighing device of the present invention can realize limit protection. The use of limit screws, limit washers and light holes in the bottom plate can limit the movable range of the table top in the vertical direction and the horizontal direction, thereby preventing the table top from warping. Excessive vertical or lateral displacement can damage the equipment or shear beam sensor. The use of lifting screws can support the table with the top of the lifting screws during equipment maintenance, which facilitates the maintenance of workers and reduces the labor intensity of workers. The limit nut and the lifting nut are respectively used to fix the limit screw and the lifting screw after adjustment, which can ensure the stability of the equipment and the smooth progress of the weighing process.

Description of drawings

Fig. 1: schematic diagram of weighing device of the present invention;

Figure 2: Side view of Figure 1;

Figure 3: A partial enlarged view of Figure 1 .

Among them, 1, the table, 2, the upper backing plate, 3, the upper ball holder, 4, the pressure ball, 5, the lower ball holder, 6, the shear beam sensor, 7, the connecting screw, 8, the lower backing plate, 9, Outrigger, 10, Fixing plate, 11, Lifting screw, 12, Lifting nut, 13, Limiting nut, 14, Limiting washer, 15, Limiting screw

Detailed ways

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

As shown in Figure 1, Figure 2 and Figure 3, a weighing device that can realize limit protection includes a table 1, an upper backing plate 2, an upper ball holder 3, a pressure ball 4, a lower ball holder 5, a shearing Beam sensor 6, connecting screw 7, bottom plate 8, outrigger 9, fixing plate 10, lifting screw 11, lifting nut 12, limit nut 13, limit washer 14, limit screw 15, the table 1 is Rectangular, the upper backing plate 2 has four pieces, which are respectively welded to the four corner positions of the lower part of the table 1, the cylindrical pins of the upper ball holder 3 are inserted into the holes of the upper backing plate 2, the cylindrical pins of the lower ball holder 5 are The pin is inserted into the hole of the shear beam sensor 6 , and the pressure bearing ball 4 is located between the upper ball socket 3 and the lower ball socket 5 . The upper part of the support leg 9 is welded with a lower backing plate 8, and the lower part is welded with a fixing plate 10. The lower backing plate 8 is provided with three threaded holes and one light hole. The shear beam sensor 6 is fixed to the two threaded holes of the lower backing plate 8 with two connecting screws 7 , and the lifting screw 11 is screwed into another screw hole of the lower backing plate 8 from the lower part of the lower backing plate 8 It is fastened by the lifting nut 12, the gap between the top of the lifting screw 11 and the upper backing plate 2 is about 5mm, and the thread length of the lifting screw 11 is greater than that of the upper ball holder 3, the pressure ball 4, the lower ball holder 5, and the shear beam sensor. 6. The sum of the vertical distance between the upper surface of the upper backing plate 2 and the lower surface of the lower backing plate 8 and the thickness of the lifting nut 12 after installation is about 15 mm. The diameter of the light hole opened on the lower backing plate 8 is larger than the diameter of the limit screw 15, and the diameter difference between the two is about 8 mm. The limit screw 15 covers the upper limit washer 14 from bottom to top. The hole is screwed into the threaded hole opened by the upper backing plate 2 after being matched with the limit nut 13. The light hole opened on the lower backing plate 8 and the threaded hole opened on the upper backing plate 2 are located on the same centerline. The gap between the gasket 14 and the bottom plate 8 is about 2 mm.

1 , 2 and 3 , the table top 1 is rectangular, and four sets of shear beam sensors 6 and corresponding limit protection and support components are installed at positions close to the four corners of the table top 1 . When weighing, the weight of the material to be weighed is transmitted to the shear beam sensor 6 through the table 1, the upper backing plate 2, the upper ball holder 3, the pressure ball 4, and the lower ball holder 5, and the shear beam sensor 6 will be sheared. Output the analog signal, and the computer will accurately display the weight of the object to be weighed according to the change of the analog signal. When the center of gravity of the material to be weighed is at the edge of the table 1 and the table 1 is severely eccentrically loaded, the limit screw 15 and the limit washer 14 together with it will prevent the table from lifting beyond the allowable height; when the table 1 is subjected to external factors When the lateral force is large, the light hole opened in the bottom plate 2 will limit the lateral displacement of the limit screw 15 to ensure that the lateral displacement of the table 1 fastened with the limit screw 15 is also within the allowable range. During maintenance, loosen the lifting nut 12, rotate the lifting screw 11 to make its top contact with the upper backing plate 8, support the table 1, the worker will perform the maintenance, and after the maintenance, rotate the lifting screw 11 in the opposite direction to make the top end with the upper backing plate 2 After separation, the lift nut 12 is tightened. The present invention restricts the movable range of the table 1 in the vertical and horizontal directions by using the limiting screw 15, the limiting washer 14 and the opening of the light hole in the bottom plate 8, so as to prevent the table 1 from lifting or excessive lateral displacement from damaging the equipment. Using the lifting screw 11 can support the table top 1 with the top of the lifting screw 11 when the equipment is overhauled, which is convenient for workers to overhaul. Therefore, the safety and reliability of the equipment are ensured, and the labor intensity of workers' maintenance is reduced.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, various modifications and improvements can be made without departing from the principles of the present invention, which should also be regarded as the present invention. The scope of protection of the invention.

Claims (4)

1. a weighing device that can realize limit protection, it is characterized in that: comprise table top (1), upper backing plate (2), upper ball holder (3), pressure-bearing ball (4), lower ball holder (5) ), shear beam sensor (6), connecting screw (7), bottom plate (8), outrigger (9), fixing plate (10), lifting screw (11), lifting nut (12), limit nut (13), a limit washer (14), a limit screw (15), the table top (1) is rectangular, and the upper backing plate (2) has four pieces, which are respectively welded to the four parts at the lower part of the table top (1). At the corner position, the cylindrical pin of the upper ball holder (3) is inserted into the hole of the upper backing plate (2), and the cylindrical pin of the lower ball holder (5) is inserted into the hole of the shear beam sensor (6), so The pressure-bearing ball (4) is located between the upper ball holder (3) and the lower ball holder (5). 2. A weighing device capable of realizing limit protection according to claim 1, wherein the upper part of the outrigger (9) is welded with a bottom plate (8), and the lower part is welded with a fixed plate (10), and the bottom plate The plate (8) is provided with three threaded holes and one smooth hole. 3. A weighing device that can realize limit protection according to claims 1 and 2, the shear beam sensor (6) is fixed to two parts of the bottom plate (8) with two connecting screws (7). On each threaded hole, the lifting screw (11) is screwed from the lower part of the lower backing plate (8) into another screw hole of the lower backing plate (8) and fastened by the lifting nut (12). The lifting screw (11) The gap between the top end of the ball and the upper backing plate (2) is about 5mm, and the thread length of the lifting screw (11) is greater than that of the upper ball holder (3), the pressure ball (4), the lower ball holder (5), and the shear beam sensor ( 6) After installation, the vertical distance between the upper surface of the upper backing plate (2) and the lower surface of the lower backing plate (8) and the thickness of the lifting nut (12) are about 15mm. 4. A weighing device that can realize limit protection according to claims 1 and 2, the diameter of the light hole opened on the lower backing plate (8) is larger than the diameter of the limit screw (15), the difference between the two is The diameter difference is about 8mm, and the limit screw (15) covers the upper limit washer (14) from bottom to top, passes through the light hole of the lower backing plate (8) and cooperates with the limit nut (13), and then screwed to the upper backing plate ( 2) In the threaded hole opened, the light hole opened on the lower backing plate (8) and the threaded hole opened on the upper backing plate (2) are located on the same centerline, and the rear limit washer (14) and the lower backing plate are tightened. (8) The clearance is about 2mm.