Anti-toppling weighing sensor

Abstract

The utility model relates to an anti-toppling weighing sensor which comprises a horizontally-arranged bottom plate, an anti-rotation base is arranged on the bottom plate, a sensor body is vertically arranged on the anti-rotation base, a protective sleeve is arranged at the lower end of the sensor body, the anti-rotation base is sleeved with the protective sleeve, and a pressing plate is arranged at the upper end of the sensor body. Side plates are vertically and downwards arranged on the two sides of the pressing plate, a connecting plate is arranged between the side plates on the two sides, through holes are formed in the two ends of the connecting plate, anti-inclination bolts are arranged at the positions, corresponding to the through holes, of the bottom plate, and the anti-inclination bolts penetrate through the through holes to be connected with the bottom plate. The anti-rotation base is arranged on the bottom plate, the sensor body is arranged on the anti-rotation base, rotation of the sensor can be limited, meanwhile, the protective sleeve is arranged, the sensor body can be protected, water and dust are prevented from entering the sensor body, and the pressing plate, the side plate and the connecting plate which are connected are arranged, so that the overall rigidity is good, and the supporting performance is high; and the anti-inclination bolts arranged at the two ends of the connecting plate are combined, so that the supporting and anti-inclination effects are good.

Description

Technical Field

[0001] The present application relates to the technical field of weighing sensors, and in particular to an anti-dumping weighing sensor. Background Art

[0002] A sensor is a device or apparatus that can sense a specified measured object and convert it into a usable signal according to a certain rule. It is usually composed of a sensitive element and a conversion element. A weighing sensor is a detection device that can detect electrical changes caused by the deformation of a strain gauge and then calculate the pressure value. Column sensors are widely used in various electronic weighing equipment such as truck scales, track scales, axle weight scales, and tank scales. The elastic body of a column sensor is generally a single pure column or shear column structure. The weight is calculated by the deformation of the elastic body.

[0003] Conventional column sensors adopt a spherical design and have a certain degree of dynamic load weighing function. However, due to the spherical structure of the force transmission mechanism, the upper load plate will shake along the tangent direction of the spherical surface of the force transmission structure, which makes the weighing object have the risk of shaking, overturning, etc.

[0004] There are also some column-type weighing sensors with anti-drift on the market. For example, a Chinese patent with authorization announcement number CN217687468U and publication date October 28, 2022 discloses a column-type weighing module, including: an upper top plate and a lower top plate are horizontally arranged, and a support plate is vertically arranged between the upper top plate and the lower top plate; the lower top plate is fixed to the bottom plate; the lower top plate includes a first through hole and a second through hole; the top structure and the bottom plate are fixed to form a rigid structure, and the weighing sensor passes through the first through hole and is located in the rigid structure; the anti-overturning bolt passes through the second through hole and is threadedly connected to the bottom plate; the upper top plate includes a plurality of adjustment bolt holes, and the adjusting bolts are arranged in the adjusting bolt holes for adjusting the balance of the weighing object.

[0005] In the above, a rigid structure is formed by setting an upper top plate, a support plate, a lower top plate and a bottom, which provides support when the weighing sensor breaks or the weighing object overturns to ensure the safety of the weighing object. Regarding the related technologies mentioned above, the inventor believes that although the application can play a certain protective effect, the anti-overturning bolts in the application are only set on one side and cannot play a good protective effect. At the same time, the application does not set an anti-rotation and waterproof structure of the column sensor, which affects its service life. Utility Model Content

[0006] The present application provides an anti-dumping weighing sensor, which has the effects of anti-rotation and waterproof, high weighing accuracy and long service life.

[0007] The anti-dumping weighing sensor provided in this application adopts the following technical solution:

[0008] An anti-dump weighing sensor comprises a horizontally arranged base plate, an anti-rotation base is arranged on the base plate, a sensor body is vertically arranged on the anti-rotation base, a protective sleeve is arranged at the lower end of the sensor body and the protective sleeve is sleeved on the anti-rotation base, a pressure plate is arranged at the upper end of the sensor body, side plates are vertically arranged downward on both sides of the pressure plate, a connecting plate is arranged between the side plates on both sides, the connecting plate is horizontally arranged and through holes are arranged at both ends of the connecting plate, anti-dump bolts are arranged at positions corresponding to the through holes on the base plate, and the anti-dump bolts pass through the through holes and are connected to the base plate.

[0009] Preferably, the sensor body includes a cylindrical elastomer, a groove is provided in the middle of the cylindrical elastomer and a strain gauge is provided in the groove, a waterproof joint is connected to the strain gauge, a sealing plate is provided on the outer side of the groove, the upper and lower ends of the cylindrical elastomer are both cylindrical and the lower end of the cylindrical elastomer is provided with multiple cut edges, and the anti-rotation base is provided with a groove corresponding to the cut surface.

[0010] Preferably, a positioning seat is provided on one side of the pressure plate close to the sensor body, a circular groove is provided in the positioning seat and the positioning seat is connected to the upper end of the columnar elastic body through the circular groove.

[0011] Preferably, the protective sleeve is a cylindrical structure with a hole, the protective sleeve is inverted on the anti-rotation base, a step is provided on the inner side of the protective sleeve, the outer diameter of the protective sleeve gradually increases from top to bottom, an annular protrusion is provided on the outer side of the lower end of the protective sleeve, and the diameter of the annular protrusion is larger than the outer diameter of the anti-rotation base.

[0012] Preferably, the pressure plate, the side plate and the connecting plate are fixedly connected, the side plate is a U-shaped plate with its opening facing outward, the connecting plate is a rectangular plate, a hole is provided in the middle of the connecting plate and the diameter of the hole is larger than the outer diameter of the protective sleeve.

[0013] Preferably, the pressing plate, the side plate and the connecting plate are welded together, the side plate is provided with installation identification holes, and the positions of the installation identification holes on the side plates at both sides are different.

[0014] Preferably, a gap is provided between the anti-tilt bolt and the through hole on the connecting plate, a spring washer is provided between the anti-tilt bolt and the connecting plate, and a height difference is provided between the connecting plate and the bottom plate.

[0015] Preferably, a plurality of mounting holes are provided on the base plate and the pressure plate.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. The present application sets an anti-rotation base on the bottom plate and sets a sensor body on the anti-rotation base, thereby limiting the rotation of the sensor and ensuring the measurement accuracy. At the same time, a protective sleeve is set at the lower end of the sensor body to protect the sensor body, prevent water and dust from entering, and extend the service life of the sensor. At the same time, a pressure plate is set at the upper end of the sensor body and two side plates are connected to the pressure plate. The two side plates are connected by a connecting plate, and the overall rigidity is good and the supporting performance is strong. At the same time, anti-tilt bolts are set at both ends of the connecting plate to achieve good supporting and anti-tilt effect.

[0018] 2. By setting a groove on the sensor body and a strain gauge in the groove, the deformation of the cylindrical elastic body is detected by the strain gauge, and then the pressure value is calculated through the circuit to achieve the purpose of weighing. At the same time, a sealing plate is set on the outside of the groove to ensure the accuracy of the detection; by setting a plurality of cutting edges at the lower end of the cylindrical elastic body and corresponding grooves on the anti-rotation base, the cylindrical elastic body can be prevented from rotating during weighing, thereby ensuring accurate measurement; by setting a positioning seat on the pressure plate, it is convenient to locate and install the sensor body.

[0019] 3. By setting the protective sleeve as a cylindrical structure with holes and providing an annular convex portion on the outer side of the lower end of the protective sleeve, the sensor body and the anti-rotation base can be sealed to achieve dustproof and waterproof effects; by providing steps in the protective sleeve, installation is facilitated.

[0020] 4. By welding and fixing the pressure plate, side plate and connecting plate, the overall rigidity is good, the supporting effect is strong, and a good anti-dumping effect can be achieved. At the same time, anti-dumping bolts are provided at both ends of the pressure plate, which can prevent the pressure plate from dumping and limit the rotation of the pressure plate to ensure measurement accuracy; by providing direction identification holes at different positions of the side plates on both sides, it is convenient to confirm the front and rear installation direction of the sensor, which is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a stereoscopic diagram of an anti-dump weighing sensor in a preferred embodiment of the present application.

[0022] Figure 2 It is a front view of the anti-dump weighing sensor in the preferred embodiment of the present application.

[0023] Figure 3 It is an exploded view of the anti-dump weighing sensor in the preferred embodiment of the present application.

[0024] Figure 4 This is an exploded view of the anti-dump weighing sensor from another perspective in the preferred embodiment of the present application.

[0025] Explanation of the reference numerals: 1. Bottom plate; 2. Anti-rotation base; 3. Sensor body; 301. Columnar elastomer; 302. Waterproof joint; 303. Sealing plate; 4. Protective sleeve; 5. Pressure plate; 6. Side plate; 7. Connecting plate; 8. Anti-tilt bolt; 9. Positioning seat; 10. Direction identification hole; 11. Mounting hole. DETAILED DESCRIPTION

[0026] The present application is further described in detail below in conjunction with the accompanying drawings.

[0027] An embodiment of the present application discloses an anti-dump weighing sensor.

[0028] Reference Figures 1 to 4 An anti-dumping weighing sensor includes a horizontally arranged bottom plate 1, an anti-rotation base 2 is arranged on the bottom plate 1, and a sensor body 3 is vertically arranged on the anti-rotation base 2. Specifically, the sensor body 3 includes a cylindrical elastic body 301, a groove is arranged in the middle of the cylindrical elastic body 301, and a strain gauge is arranged in the groove, a waterproof joint 302 is connected to the strain gauge, and a sealing plate 303 is arranged on the outer side of the groove. The upper and lower ends of the cylindrical elastic body 301 are both cylindrical, and the lower end of the cylindrical elastic body is provided with a plurality of cut edges, and the anti-rotation base 2 is provided with a groove corresponding to the cut surface; the lower end of the sensor body 3 is provided with a protective sleeve 4 The protective sleeve 4 is sleeved on the anti-rotation base 2, a pressure plate 5 is arranged on the upper end of the sensor body 3, a positioning seat 9 is arranged on the side of the pressure plate 5 close to the sensor body 3, a circular groove is arranged in the positioning seat 9 and is connected to the upper end of the cylindrical elastic body 301 through the circular groove, side plates 6 are arranged vertically downward on both sides of the pressure plate 5, a connecting plate 7 is arranged between the side plates 6 on both sides, the connecting plate 7 is arranged horizontally and through holes are arranged at both ends of the connecting plate 7, anti-tilt bolts 8 are arranged at positions corresponding to the through holes on the bottom plate 1, the anti-tilt bolts 8 pass through the through holes and are connected to the bottom plate 1, and a plurality of mounting holes 11 are arranged on the bottom plate 1 and the pressure plate 5.

[0029] Reference Figures 1 to 4The protective sleeve 4 is a cylindrical structure with a hole, and the protective sleeve 4 is inverted on the anti-rotation base 2. A step is provided on the inner side of the protective sleeve 4, and the outer diameter of the protective sleeve 4 gradually increases from top to bottom. An annular convex portion is provided on the outer side of the lower end of the protective sleeve 4, and the diameter of the annular convex portion is larger than the outer diameter of the anti-rotation base 2. The pressing plate 5, the side plate 6 and the connecting plate 7 are fixedly connected. Specifically, the pressing plate 5, the side plate 6 and the connecting plate 7 are connected by welding. The side plate 6 is a U-shaped plate and the opening of the side plate 6 faces outward. The connecting plate 7 is a rectangular plate. A hole is provided in the middle of the connecting plate 7 and the diameter of the hole is larger than the outer diameter of the protective sleeve 4; a direction identification hole 10 is provided on the side plate 6, and the position of the direction identification holes 10 on the side plates 6 on both sides is different. The front and rear installation direction of the sensor can be confirmed according to the position of the direction identification hole 10, which is convenient for installation. Specifically, the direction identification holes 10 in this embodiment are respectively arranged on the upper and lower parts of the side plates 6, and the direction identification holes 10 of the sensor in the front and rear directions are different, which is convenient for installation and wiring.

[0030] Reference Figure 2 The anti-tilt bolts 8 are arranged at both ends of the bottom plate 1 and are located on the outside of the side plate 6. A gap is arranged between the anti-tilt bolts 8 and the through holes on the connecting plate 7. A spring gasket is arranged between the anti-tilt bolts 8 and the connecting plate 7. A height difference is arranged between the connecting plate 7 and the bottom plate 1.

[0031] The implementation principle is: the present application sets an anti-rotation base 2 on the bottom plate 1 and a sensor body 3 on the anti-rotation base 2, so as to limit the rotation of the sensor body 3 and ensure the measurement accuracy. At the same time, a protective sleeve 4 is set at the lower end of the sensor body 3 to protect the sensor body 3, avoid water and dust from entering, and extend the service life of the sensor; at the same time, a pressure plate 5 is set at the upper end of the sensor body 3 and two side plates 6 are connected to the pressure plate 5. The two side plates 6 are connected by a connecting plate 7. The overall rigidity is good and the supporting performance is strong. Combined with the anti-tilt bolts 8 set at both ends of the connecting plate 7, the supporting anti-tilt effect is good.

[0032] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An anti-dumping weighing sensor, characterized in that: The sensor comprises a horizontally arranged bottom plate (1), an anti-rotation base (2) being arranged on the bottom plate (1), a sensor body (3) being vertically arranged on the anti-rotation base (2), a protective sleeve (4) being arranged at the lower end of the sensor body (3) and the protective sleeve (4) being sleeved on the anti-rotation base (2), a pressure plate (5) being arranged at the upper end of the sensor body (3), side plates (6) being arranged vertically downward on both sides of the pressure plate (5), a connecting plate (7) being arranged between the side plates (6) on both sides, the connecting plate (7) being arranged horizontally and having through holes at both ends of the connecting plate (7), anti-tilt bolts (8) being arranged at positions corresponding to the through holes on the bottom plate (1), and the anti-tilt bolts (8) passing through the through holes are connected to the bottom plate (1).

2. The anti-dumping weighing sensor according to claim 1, characterized in that: The sensor body (3) comprises a cylindrical elastic body (301), a groove is provided in the middle of the cylindrical elastic body (301) and a strain gauge is provided in the groove, a waterproof connector (302) is connected to the strain gauge, a sealing plate (303) is provided on the outer side of the groove, the upper and lower ends of the cylindrical elastic body (301) are both cylindrical and the lower end of the cylindrical elastic body is provided with a plurality of cut edges, and a groove corresponding to the cut surface is provided on the anti-rotation base (2).

3. The anti-dumping weighing sensor according to claim 2, characterized in that: A positioning seat (9) is provided on one side of the pressure plate (5) close to the sensor body (3); a circular groove is provided in the positioning seat (9) and is connected to the upper end of the columnar elastic body (301) through the circular groove.

4. The anti-dumping weighing sensor according to claim 1, characterized in that: The protective sleeve (4) is a cylindrical structure with a hole. The protective sleeve (4) is inverted on the anti-rotation base (2). A step is provided on the inner side of the protective sleeve (4). The outer diameter of the protective sleeve (4) gradually increases from top to bottom. An annular convex portion is provided on the outer side of the lower end of the protective sleeve (4), and the diameter of the annular convex portion is greater than the outer diameter of the anti-rotation base (2).

5. The anti-dumping weighing sensor according to claim 4, characterized in that: The pressure plate (5), the side plate (6) and the connecting plate (7) are fixedly connected, the side plate (6) is a U-shaped plate with an opening facing outward, the connecting plate (7) is a rectangular plate, a hole is provided in the middle of the connecting plate (7) and the diameter of the hole is greater than the outer diameter of the protective sleeve (4).

6. The anti-dumping weighing sensor according to claim 5, characterized in that: The pressing plate (5), the side plate (6) and the connecting plate (7) are connected by welding, and a direction identification hole (10) is provided on the side plate (6). The direction identification holes (10) on the side plates (6) on both sides are located at different positions.

7. The anti-dumping weighing sensor according to claim 1, characterized in that: A gap is provided between the anti-tilt bolt (8) and the through hole on the connecting plate (7), a spring washer is provided between the anti-tilt bolt (8) and the connecting plate (7), and a height difference is provided between the connecting plate (7) and the bottom plate (1).

8. The anti-dumping weighing sensor according to claim 1, characterized in that: A plurality of mounting holes (11) are provided on the base plate (1) and the pressure plate (5).

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