CN211740359U - Full-suspension metering scale - Google Patents

Abstract

The utility model discloses a full suspension weigher relates to stabilized soil/improvement soil plant mixing equipment field, includes electronic spiral weigher, full suspension weighing device and the weighing platform that top-down set up, the inside screw axis external diameter of electronic spiral weigher sets up to 0.5-1mm with section of thick bamboo wall clearance, full suspension weighing device sets up to three pressure sensor and constitutes, three pressure sensor sets up on weighing platform with three point coplanar is fixed to three's focus position corresponds to electronic spiral weigher's feeding blanking mouth, weighing platform sets up to the independent support plane isolated with the vibration source. The utility model discloses can match user powder ratio quantity according to the powder weighing value of reality, realize the continuous stable measurement of powder, improve the ratio output of the accurate assurance measurement powder simultaneously of measurement precision, guarantee output powder quality.

Description

Full-suspension metering scale

Technical Field

The utility model relates to a stabilized soil/improvement soil mixing equipment field, specific full suspension weigher that says so.

Background

The plant mixing equipment for stabilized soil/improved soil is one kind of road surface machine, and is a stirring machine set specially for mixing various kinds of stable mixture material with hydraulic material as binding agent or granular soil and powder material with certain plasticity index. The equipment is mainly used for producing gravel stabilized soil, lime soil stabilized soil, gravel modified soil and cohesive modified soil, is optimal equipment for building high-grade roads and railways, comprises an aggregate batching supply metering system, a stirring system, a powder batching supply metering system, a waterway system, a storage device, a control system and the like, and belongs to the technical field of engineering construction equipment.

At present, the metering scales of the stabilized soil plant mixing equipment and the improved soil plant mixing equipment have the following structures:

1. and (3) a decrement weighing metering mode, namely, the powder is subjected to 2-layer weighing structure and quantitative weighing, and then the required powder doping amount is automatically calculated according to the actual difference value, and the proportioning output is met. The set of metering scales is not harmonious with the layout of the whole station; a measurement blind area or fuzzy measurement is easy to exist in the blanking and feeding processes of the supplement scale and the decrement scale simultaneously, and the powder doping amount is not well controlled; the calibration mechanism is static calibration, and dynamic measurement cannot meet the standard measurement precision requirement;

2. the belt scale metering mode is that powder is conveyed by a high-flange belt with a baffle plate, and the belt is loaded with powder with a certain section output and constant-speed output by a PLC variable frequency control or constant-speed volume metering matched drum-type driving device, so that the powder doping amount is met and the powder proportioning output is met. The gap between the metering scale and the powder tank is large, the sealing effect and the metering precision are poor, and the metering scale is basically eliminated by the existing equipment market;

3. the suspension type single-point tension type lever metering mode has the advantages of large impact on the metering tare weight of powder, easy floating weighing and large metering fluctuation; the single-point tension sensor is poor in weighing, anti-interference performance and metering stability.

Disclosure of Invention

For solving the technical problem that above-mentioned exists, the utility model provides a full suspension weigher can match user's powder ratio quantity according to the powder weighing value of reality, realizes the continuous stable measurement of powder, improves the ratio output of the accurate assurance measurement powder simultaneously of measurement precision, guarantees the output powder quality.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a full suspension weigher, includes electronic spiral weigher, full suspension weighing device and the weighing platform that top-down set up, the inside screw axis external diameter of electronic spiral weigher sets up to 0.5-1mm with section of thick bamboo wall clearance, full suspension weighing device sets up to three pressure sensor and constitutes, three pressure sensor is fixed to be set up on weighing platform with three coplanar, and three's barycenter position corresponds to electronic spiral weigher's feeding blanking mouth, weighing platform sets up to the independent support plane with vibration source isolated.

The device also comprises an electric control acquisition device which acquires the average value of the three pressure sensors as a final weighing value.

The weighing length of the electronic spiral metering scale is set to be 1.5 meters.

The weighing platform is of an independent structure combining a triangular support frame and the platform.

The utility model has simple structure, the clearance between the outer diameter of the screw shaft and the cylinder wall in the electronic spiral metering scale is controlled between 0.5 mm and 1mm, the constant and stable tare weight of the electronic spiral metering scale is ensured, and the precondition guarantee is provided for dynamic continuous weighing; the three pressure sensors are designed to realize a stable weighing mechanism in a three-point coplanar structure, and the feed inlet of the electronic spiral metering scale is ensured to correspond to the gravity center positions of the three pressure sensors, so that the falling impact of powder of an input device is effectively prevented, the metering deviation is reduced, the anti-interference capability is strong, and the performance is more stable; the weighing value is programmed to acquire the metering average value of the three pressure sensors, so that the accuracy of the weighing value is ensured; the weighing platform is designed to be supported independently and separated from the vibration source, so that the weighing fluctuation is avoided, the whole weighing system can be effectively supported and continuously and stably weighed, and the weighing platform is suitable for large-scale popularization and application.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic top view of the present invention;

fig. 3 is a schematic side view of the present invention.

Detailed Description

The invention is described in detail below with reference to the following figures and specific embodiments:

as shown in fig. 1-3, a full-suspension weighing scale comprises an electronic spiral weighing scale 1, a full-suspension weighing device 2 and a weighing platform 3, which are arranged from top to bottom, wherein a gap between the outer diameter of a spiral shaft inside the electronic spiral weighing scale 1 and a cylinder wall is set to be 0.5-1mm, the full-suspension weighing device 2 is composed of three pressure sensors 21, the three pressure sensors 21 are fixedly arranged on the weighing platform 3 in a three-point coplanar manner, the gravity centers of the three pressure sensors correspond to a feeding and blanking port of the electronic spiral weighing scale 1, and the weighing platform 3 is an independent supporting plane isolated from a vibration source.

As a preferable mode, the present embodiment further includes an electronic control acquisition device, which acquires an average value of the three pressure sensors 21 as a final weighing value, and approaches a proportioning setting value more, so that the metering output is more accurate.

In a preferable mode, in this embodiment, the weighing length of the electronic spiral weigher 1 is set to be 1.5 meters, and the lengthened weighing length effectively ensures stable weighing of the materials.

In this embodiment, the whole set of the fully-suspended electronic metering device is mainly composed of an electronic spiral metering scale 1, and is composed of a driving device, a conveying device and a transmission accessory. The conveying device comprises a conveying screw and a cylinder wall, the outer part of the conveying screw shaft and the cylinder wall are mechanically and finely processed, the gap between the outer diameter of the screw and the cylinder wall is controlled to be 0.5-1mm, the skinning amount in the powder weighing process is well controlled, and the skinning amount of 0.5-1mm can be ignored during dynamic weighing, so that the constant and stable skin weight of the electronic screw metering scale is ensured. The three-point coplanar stable weighing mechanism with the three pressure sensors is fixed on the weighing platform, so that the anti-interference performance such as wind load resistance and the like of the outside is greatly enhanced; three pressure sensor overall arrangement position three-dimensional optimization, the focus is confirmed and is guaranteed the balance powder import position and three pressure sensor focus position coincidence, also is that the powder feeding falls into three pressure sensor's focus position all the time, effectively guarantees to weigh stably. The weighing platform 3 is of an independent structure combining a triangular support frame and the platform, is effectively separated from the vibration source stirring device, and can effectively support the whole device and realize stable weighing of the system. The electronic spiral metering scale is controlled to be a 50HZ four-stage motor for constant rotation, constant-speed weighing and continuous and stable operation.

During actual production, external powder enters from a feeding hole of the electronic spiral metering scale 1, and the powder is output from a discharging hole 12 according to a set formula. The input device of external powder can contain a variable-frequency conveying screw, and the variable-frequency speed-regulating constant-speed quantitative output is realized by the associated PLC program control, so that the mixing amount requirements of different proportions of powder of customers are met.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims (4)

1. The utility model provides a full-suspension weigher, its characterized in that includes electronic spiral weigher (1), full-suspension weighing device (2) and weighing platform (3) that top-down set up, the inside screw axis external diameter of electronic spiral weigher (1) sets up to 0.5-1mm with section of thick bamboo wall clearance, full-suspension weighing device (2) set up to three pressure sensor (21) and constitute, three pressure sensor (21) set up on weighing platform (3) with three point coplanar fixed to the focus position of three corresponds the feeding blanking mouth of electronic spiral weigher (1), weighing platform (3) set up to the isolated independent support plane with the vibration source.

2. A fully suspended weighing scale according to claim 1, further comprising an electronically controlled pick-up device for picking up an average value of the three pressure sensors (21) as a final weighing value.

3. A fully suspended weighing scale according to claim 1, wherein the weighing length of the electronic screw weighing scale (1) is set to 1.5 meters.

4. A fully suspended weighing scale according to claim 1, wherein the weighing platform (3) is provided as a stand-alone triangular support frame in combination with the platform.

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