Weighing device for a pre-press

Abstract

The utility model discloses a kind of weighing device of pre-press, it relates to a weighing system. Including weighing hanger and weighing assembly, weighing hanger is connected with weighing assembly, the center of the weighing hanger is determined distribution point after computing, and three lifting points are used;The center of the lifting point weighing hanger is determined distribution point after computing;Weighing assembly is placed with material box by weighing frame. The utility model is reasonable in structure design, improves the weighing precision of equipment, reliability, facilitates installation and debugging, saves cost and facilitates the maintenance of later equipment.

Description

Technical Field

[0001] This utility model relates to a weighing system, specifically a weighing device for a pre-compressor. Background Technology

[0002] With societal progress, consumers have increasingly higher demands for tobacco product quality. As a crucial link in the tobacco industry chain, tobacco leaf re-drying production enterprises are facing new requirements for their key equipment, the pre-compression baling machine. Currently, there are two main structural forms of the weighing system for pre-compression baling machines: one uses an electronic belt scale with front-end feeding; the other uses static weighing with four-point support at the bottom of the weighing frame. Because the electronic belt scale is a dynamic weighing method with lower accuracy than the static scale, it is gradually being phased out. The current mainstream method uses a four-point support structure. However, this method results in a slender weighing frame with a narrow bottom and high height (1500x1300mm at the bottom, 5800mm high, and an overall weight of approximately 3600kg (including material weight)). This high center of gravity leads to poor overall stability. With the upgrading of equipment in tobacco leaf re-drying enterprises, there is an urgent need for a new type of pre-compression baling machine and its weighing system that is efficient, reliable, and easy to maintain. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a weighing device for a pre-compressor. The device has a reasonable structural design, which improves the weighing accuracy and reliability of the equipment, facilitates installation and commissioning, saves costs, and facilitates the maintenance of the equipment in the later stage.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a weighing device for a pre-compressor, comprising a weighing hanger and a weighing assembly, wherein the weighing hanger is connected to the weighing assembly, the weighing hanger employs three lifting points, and the distribution points of the lifting points are determined after the center of the weighing hanger is calculated; the weighing assembly holds a material box through the weighing frame.

[0005] Preferably, the weighing hanger is made of welded profile channel steel and plate, which has a simple structure and good stress resistance.

[0006] Preferably, the weighing assembly includes a support, a cylinder, a cylinder connector, a load cell, a spherical bearing, and a thrust bearing. The spherical bearing is located above the cylinder, and the load cell is located between the spherical bearing and the thrust bearing. The cylinder is connected to the support below the cylinder via the cylinder connector.

[0007] The beneficial effects of this utility model are as follows: The structure of this utility model is reasonable. By changing the traditional four-point bottom support to a three-point upper suspension scale, the weighing assembly can be automatically straightened, resulting in better stress distribution. This improves the weighing accuracy and reliability of the equipment, facilitates installation and debugging, saves costs, and makes subsequent equipment maintenance easier. Attached Figure Description

[0008] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments;

[0009] Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Figure 2 This is a schematic diagram of the lifting point distribution of this utility model;

[0011] Figure 3 This is a schematic diagram of the weighing hanger of this utility model;

[0012] Figure 4 for Figure 3 Sectional view along axis AA;

[0013] Figure 5 This is a schematic diagram of the weighing assembly of this utility model. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] Reference Figure 1-5 The specific embodiment adopts the following technical solution: a weighing device for a pre-compressor, including a weighing hanger 1 and a weighing assembly 2. The weighing hanger 1 is connected to the weighing assembly 2. The weighing hanger 1 adopts three lifting points 3. The distribution points of the lifting points 3 are determined after the center of the weighing hanger is calculated. The weighing assembly 2 places a material box 4 through a weighing frame 5.

[0016] The weighing hanger 1 is made of profile channel steel and plate welded together, with a simple structure and good stress resistance.

[0017] The weighing assembly 2 includes a support 21, a cylinder 22, a cylinder connector 23, a load cell 24, a spherical bearing 25, and a thrust bearing 26. The spherical bearing 25 is located above the cylinder 22, and the load cell 24 is located between the spherical bearing 25 and the thrust bearing 26. The cylinder 22 is connected to the support 21 below through the cylinder connector 23.

[0018] This specific implementation method optimizes the design of the weighing system by replacing the four-point bottom support with a three-point upper suspension. The weighing assembly can automatically straighten, and the distribution points are determined by calculating the center of gravity of the three points. After the three points are leveled, the weight distribution is basically evenly distributed automatically. Simple fine-tuning is all that's needed to meet the usage requirements. The simplicity, reliability, interchangeability, and maintainability of this weighing system are fundamentally improved.

[0019] This specific implementation method adopts an optimized principle and structural design, which is simple and reliable, has a compact shape, is convenient and quick to debug, and has low manufacturing and maintenance costs.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A weighing device for a pre-compressor, characterized in that, It includes a weighing hanger (1) and a weighing assembly (2). The weighing hanger (1) is connected to the weighing assembly (2). The weighing hanger (1) has three lifting points (3). The lifting points (3) are distributed after the center of the weighing hanger is calculated. The weighing assembly (2) places the material box (4) through the weighing frame (5).

2. The weighing device for a pre-compressor according to claim 1, characterized in that, The weighing hanger (1) is made of profile channel steel and plate welded together.

3. The weighing device for a pre-compressor according to claim 1, characterized in that, The weighing assembly (2) includes a support (21), a cylinder (22), a cylinder connector (23), a load cell (24), a spherical bearing (25), and a thrust bearing (26). The spherical bearing (25) is located above the cylinder (22), and the load cell (24) is located between the spherical bearing (25) and the thrust bearing (26). The cylinder (22) is connected to the support (21) below through the cylinder connector (23).

Images