Linear self-compensation weighing sensor

Abstract

The utility model relates to the related technical field of weighing sensors, in particular to a linear self-compensation weighing sensor which comprises a base, mounting holes are formed in the edge of the surface of the base, an elastic body is mounted at the top end of the base, a stabilizing mechanism is arranged on the outer side of the elastic body, and a bearing steel ball is mounted in the middle of the top end of the elastic body. And a bearing plate is mounted at the top end of the bearing steel ball. The second stabilizing cylinder is elastically and slidably mounted in the first stabilizing cylinder and performs stable anti-deflection protection on the elastic body, so that the situation that the elastic body deflects when being pressed and the accurate weighing of the weighing sensor is influenced is avoided; the first groove and the limiting ring are arranged at the top end of the elastic body, the bearing steel ball is stably arranged at the top end of the elastic body, the bearing plate and the bearing pressing head are stably installed at the top end of the bearing steel ball through the connecting rod and the limiting ring, guiding deflection caused by stress is reduced, and the accuracy of the weighing sensor is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of weighing sensors, and in particular to a linear self-compensating weighing sensor. Background Technology

[0002] Column-type sensors are widely used in various electronic weighing equipment such as truck scales, rail scales, axle weighing scales, and tank scales. Ordinary column-type sensors used in weighing instruments generally employ a double-ball-head rocker column structure. This structure has the advantages of self-resetting and self-centering, but it carries the risk of tipping over when the tilt angle is large, especially after long-term use due to wear and corrosion. The mainstream column-type sensors on the market are pure column type and shear column type. Pure column type sensors, due to their inherent linearity defects, require linear compensation plates to adjust linearity, but the quality of these compensation plates is difficult to guarantee, increasing both manufacturing complexity and potential quality issues. Shear column type sensors are more sensitive to off-center load output, and the output is affected when the sensor is tilted at an angle.

[0003] Existing load cells lack a stable structure on the outer side of the elastic body during use. When the elastic body is subjected to pressure, it is prone to skew deformation, failing to stabilize the side of the elastic body and affecting the accurate weighing of the load cell. In addition, the bearing steel ball installed at the top of the elastic body is prone to shaking and movement, resulting in unstable installation of the bearing plate and bearing pressure head, which can easily lead to skew and inaccurate weighing by the load cell.

[0004] Therefore, we designed a linear self-compensating load cell to meet the needs of practical applications. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a linear self-compensating weighing sensor.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a linear self-compensating load cell, including a base, mounting holes on the surface edge of the base, an elastic body mounted on the top of the base, a stabilizing mechanism provided on the outside of the elastic body, a bearing steel ball mounted in the middle of the top of the elastic body, a bearing plate mounted on the top of the bearing steel ball, and a bearing pressure head fixed in the middle of the top of the bearing plate.

[0008] The stabilizing mechanism includes a first stabilizing cylinder and a second stabilizing cylinder. The first stabilizing cylinder is fixed to the top of the base, and the second stabilizing cylinder is elastically slidably mounted on the inner side of the first stabilizing cylinder and slidably sleeved on the outer side of the elastic body.

[0009] In detail, the first stabilizing cylinder is a cylindrical structure and is vertically arranged. Its surface has a lifting groove, and a guide rod is fixed inside the lifting groove. A spring is sleeved on the surface of the guide rod.

[0010] In detail, the guide rod is set vertically, and a sliding block is fixed to the bottom outer side of the second stabilizing cylinder. The surface of the sliding block has a guide hole. The sliding block is slidably inserted into the lifting groove and presses against the top of the spring. The guide rod slides through the guide hole.

[0011] In detail, the top of the base is uniformly fixed with positioning posts, the bottom of the elastic body is uniformly opened with positioning grooves, the positioning posts slide through the positioning grooves, the elastic body is provided with strain gauges inside, and a connecting line passing through the surface of the first stabilizing cylinder is connected to its outside.

[0012] In detail, the top of the elastic body has a first groove in the middle, the bottom of the bearing steel ball is placed inside the first groove, and a limiting ring is installed on the top of the elastic body at the position outside the first groove, the limiting ring surrounds the outside of the bearing steel ball.

[0013] In detail, a connecting rod is evenly fixed to the top of the limiting ring, and connecting holes are evenly opened on the surface edge of the bearing plate. The connecting rod slides through the connecting hole, and the bearing plate is set horizontally.

[0014] In detail, a nut is connected to the top of the connecting rod at the top of the connecting hole, a second groove is opened in the middle of the bottom end of the bearing plate, the top of the bearing steel ball is inserted into the second groove, and the connecting rod is vertically arranged around the bearing steel ball.

[0015] Core function: The first stabilizing cylinder is fixed on the base, and the second stabilizing cylinder is slidably and elastically sleeved inside the first stabilizing cylinder to stabilize the elastomer;

[0016] The sliding block is inserted into the lifting groove and pressed against the top of the spring, keeping the second stabilizing cylinder movable up and down along the first stabilizing cylinder;

[0017] The elastomer is stably mounted on the base through the positioning groove and positioning post, and the second stabilizing cylinder is slidably sleeved on the top of the elastomer;

[0018] The bearing steel ball is placed on the top of the elastic body through the first groove, and a limiting ring is set at the bottom outer side of the bearing steel ball to limit and stabilize the bearing steel ball;

[0019] The bearing plate presses against the top of the bearing steel ball through the second groove, and a bearing pressure head is provided at the top of the bearing plate;

[0020] The connecting rod is fixed to the top of the limiting ring. The bearing plate is stably installed through the connecting hole and the connecting rod, which can keep the bearing plate and bearing head horizontally and stably installed on the top of the bearing steel ball, and avoid the bearing head and bearing plate from being tilted under pressure.

[0021] The design scheme proposed in this utility model has the following beneficial effects in application:

[0022] 1. The second stabilizing cylinder is elastically slidably installed inside the first stabilizing cylinder, and provides stabilizing and anti-skew protection for the elastic body to avoid skewness when the elastic body is compressed, which would affect the accurate weighing of the load cell;

[0023] 2. A first groove and a limiting ring are set at the top of the elastic body to keep the bearing steel ball stably set at the top of the elastic body. The bearing plate and bearing pressure head are stably installed at the top of the bearing steel ball through the connecting rod and the limiting ring, which reduces the guide deviation due to pressure and improves the accuracy of the weighing sensor. Attached Figure Description

[0024] Figure 1 This is an axonometric view of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the first stabilizing cylinder part of the present invention;

[0026] Figure 3 This is a schematic diagram of the second stabilizing cylinder part of the present invention;

[0027] Figure 4 This is a schematic diagram of the pressure plate part of this utility model;

[0028] Figure 5 This is a schematic diagram of the elastomer part of this utility model.

[0029] In the diagram: 1. Base; 2. Mounting hole; 3. Connecting wire; 4. Guide rod; 5. Lifting groove; 6. Spring; 7. Sliding block; 8. First stabilizing cylinder; 9. Second stabilizing cylinder; 10. Elastic body; 11. First groove; 12. Limiting ring; 13. Bearing steel ball; 14. Connecting rod; 15. Bearing plate; 16. Bearing pressure head; 17. Positioning post; 18. Guide hole; 19. Connecting hole; 20. Second groove; 21. Positioning groove; 22. Nut. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Reference Figures 1-5A linear self-compensating load cell includes a base 1, with mounting holes 2 on the surface edge of the base 1, an elastic body 10 mounted on the top of the base 1, a stabilizing mechanism provided on the outer side of the elastic body 10, a bearing steel ball 13 mounted in the middle of the top of the elastic body 10, a bearing plate 15 mounted on the top of the bearing steel ball 13, and a bearing pressure head 16 fixed in the middle of the top of the bearing plate 15.

[0032] The stabilizing mechanism includes a first stabilizing cylinder 8 and a second stabilizing cylinder 9. The first stabilizing cylinder 8 is fixed to the top of the base 1, and the second stabilizing cylinder 9 is elastically slidably installed inside the first stabilizing cylinder 8 and slidably sleeved on the outside of the elastic body 10.

[0033] It should be further noted that the first stabilizing cylinder 8 is a cylindrical structure and is vertically arranged. Its surface has a lifting groove 5, and a guide rod 4 is fixed inside the lifting groove 5. A spring 6 is sleeved on the surface of the guide rod 4.

[0034] It should be further explained that the guide rod 4 is set vertically, and a sliding block 7 is fixed to the bottom outer side of the second stabilizing cylinder 9. The surface of the sliding block 7 has a guide hole 18. The sliding block 7 slides into the lifting groove 5 and presses on the top of the spring 6. The guide rod 4 slides through the guide hole 18.

[0035] It should be further explained that the top of the base 1 is uniformly fixed with positioning posts 17, and the bottom of the elastic body 10 is uniformly opened with positioning grooves 21. The positioning posts 17 slide through the positioning grooves 21. The elastic body 10 is equipped with strain gauges inside, and its outer side is connected with connecting lines 3 that pass through the surface of the first stabilizing cylinder 8.

[0036] It should be further explained that a first groove 11 is opened in the middle of the top of the elastic body 10, the bottom of the bearing steel ball 13 is placed inside the first groove 11, and a limiting ring 12 is installed at the top of the elastic body 10 and outside the first groove 11, and the limiting ring 12 surrounds the outside of the bearing steel ball 13.

[0037] It should be further noted that the top of the limiting ring 12 is uniformly fixed with connecting rods 14, and the surface edge of the bearing plate 15 is uniformly opened with connecting holes 19. The connecting rods 14 slide through the connecting holes 19, and the bearing plate 15 is set horizontally.

[0038] It should be further noted that a nut 22 is connected to the top of the connecting rod 14 and at the top of the connecting hole 19. A second groove 20 is opened in the middle of the bottom end of the bearing plate 15. The top of the bearing steel ball 13 is inserted into the second groove 20. The connecting rod 14 is vertically arranged around the bearing steel ball 13.

[0039] Working principle: The first stabilizing cylinder is fixed on the base, and the second stabilizing cylinder is slidably and elastically sleeved inside the first stabilizing cylinder to stabilize the elastomer;

[0040] The sliding block is inserted into the lifting groove and pressed against the top of the spring, keeping the second stabilizing cylinder movable up and down along the first stabilizing cylinder;

[0041] The elastomer is stably mounted on the base through the positioning groove and positioning post, and the second stabilizing cylinder is slidably sleeved on the top of the elastomer;

[0042] The bearing steel ball is placed on the top of the elastic body through the first groove, and a limiting ring is set at the bottom outer side of the bearing steel ball to limit and stabilize the bearing steel ball;

[0043] The bearing plate presses against the top of the bearing steel ball through the second groove, and a bearing pressure head is provided at the top of the bearing plate;

[0044] The connecting rod is fixed to the top of the limiting ring. The bearing plate is stably installed through the connecting hole and the connecting rod, which can keep the bearing plate and bearing head horizontally and stably installed on the top of the bearing steel ball, and avoid the bearing head and bearing plate from being tilted under pressure.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A linear self-compensating load cell, comprising a base (1), characterized in that: The base (1) has mounting holes (2) on its surface edge. An elastic body (10) is installed at the top of the base (1). A stabilizing mechanism is provided on the outside of the elastic body (10). A bearing steel ball (13) is installed in the middle of the top of the elastic body (10). A bearing plate (15) is installed at the top of the bearing steel ball (13). A bearing pressure head (16) is fixed in the middle of the top of the bearing plate (15). The stabilizing mechanism includes a first stabilizing cylinder (8) and a second stabilizing cylinder (9). The first stabilizing cylinder (8) is fixed to the top of the base (1), and the second stabilizing cylinder (9) is elastically slidably installed on the inner side of the first stabilizing cylinder (8) and slidably sleeved on the outer side of the elastic body (10).

2. The linear self-compensating load cell according to claim 1, characterized in that: The first stabilizing cylinder (8) is a cylindrical structure and is vertically arranged. A lifting groove (5) is opened on its surface. A guide rod (4) is fixed inside the lifting groove (5), and a spring (6) is sleeved on the surface of the guide rod (4).

3. A linear self-compensating load cell according to claim 2, characterized in that: The guide rod (4) is set vertically, and a sliding block (7) is fixed at the bottom outer side of the second stabilizing cylinder (9). A guide hole (18) is opened on the surface of the sliding block (7). The sliding block (7) slides into the lifting groove (5) and presses on the top of the spring (6). The guide rod (4) slides through the guide hole (18).

4. A linear self-compensating load cell according to claim 1, characterized in that: The top of the base (1) is uniformly fixed with positioning posts (17), and the bottom of the elastic body (10) is uniformly opened with positioning grooves (21). The positioning posts (17) slide through the positioning grooves (21). The elastic body (10) is provided with strain gauges inside, and its outer side is connected with connecting lines (3) that pass through the surface of the first stabilizing cylinder (8).

5. A linear self-compensating load cell according to claim 1, characterized in that: The top of the elastic body (10) has a first groove (11) in the middle. The bottom of the bearing steel ball (13) is placed inside the first groove (11). A limiting ring (12) is installed at the top of the elastic body (10) and outside the first groove (11). The limiting ring (12) surrounds the outside of the bearing steel ball (13).

6. A linear self-compensating load cell according to claim 5, characterized in that: The top end of the limiting ring (12) is uniformly fixed with a connecting rod (14), and the surface edge of the bearing plate (15) is uniformly opened with connecting holes (19). The connecting rod (14) slides through the connecting hole (19), and the bearing plate (15) is horizontally set.

7. A linear self-compensating load cell according to claim 6, characterized in that: A nut (22) is connected to the top of the connecting rod (14) and at the top of the connecting hole (19). A second groove (20) is opened in the middle of the bottom end of the bearing plate (15). The top of the bearing steel ball (13) is inserted into the second groove (20). The connecting rod (14) is vertically arranged around the bearing steel ball (13).

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