CN214502629U - Stable self-resetting column type weighing sensor - Google Patents

Abstract

The utility model discloses a stable self-resetting column type weighing sensor, which comprises an upper pressure head, a column type elastic body and a base; a self-resetting structure is arranged outside the column type elastic body, and the bottom of the self-resetting structure is connected with the base; the self-resetting structure comprises an elastic sleeve sleeved outside the column type elastic body, and the elastic force of the elastic sleeve can give an external inclination force to the column type elastic body at any angle and then quickly reset, so that the column type elastic body is always kept to be a vertical stress central line with the upper pressure head and the base, and the accuracy of weighing precision is ensured.

Description

Stable self-resetting column type weighing sensor

Technical Field

The utility model relates to a column type weighing sensor technical field, concretely relates to stable form from restoring to throne column type weighing sensor.

Background

The column type weighing sensor is applied to a large electronic weighing apparatus due to the characteristics of simple and compact structure, high rigidity, high natural frequency, quick dynamic response and the like; however, after the pillar type weighing sensor is affected by a camber force or a torsion force in use, the pillar type elastic body is prone to toppling over or inclining and displacing, so that the pillar type elastic body is separated from the stressed center of the base, weighing accuracy is affected, and even weighing fails. In the prior art, the installation limiting device is adopted abroad so as to keep the alignment of the upper pressure head with the base and with the central line of the column type elastic body and ensure the weighing precision, but the installation cost is higher and the limitation on the moving range of the column type elastic body is smaller, so that the installation limiting device is not widely applied domestically. In order to solve the problems, the invention of Chinese patent application No. 201310065566.8 discloses an integral self-resetting column type weighing sensor, which forms an automatic resetting device by matching a sealing rubber ring, a shell and a damping device, has the functions of powerful self-resetting and preventing the column type elastic body from excessively inclining for the column type elastic body, and ensures the rapid powerful resetting of the column type elastic body. However, such integral self-resetting column type weighing sensors have a number of disadvantages; firstly, clamping the top of a column type elastic body in an upper pressure head, and then sealing and pressing the upper pressure head and a shell by using a sealing rubber ring; the bottom of the column type elastic body and the shell are directly provided with a damping device consisting of a bottom plate and an upper plate to prevent the column type elastic body from excessively inclining; the structure is only a flexible column type elastic body for limiting, the elastic force of the sealing rubber ring and the damping device is weaker, and the elastic force which can quickly reset corresponding to the external inclined force borne by the column type elastic body cannot be given in large-scale weight-bearing weighing; meanwhile, the sealing rubber ring and the damping device are damaged highly; secondly, the sealing rubber ring and the damping device have irresistible oxidative damage and fracture toughness, so that the effective service life is short, and the weighing precision is easily influenced; if oxidation or fracture occurs, the integral weighing of the weighing sensor is failed; thirdly, the invention is described as an integral self-resetting column type weighing sensor, but the dustproof and waterproof performance of the upper pressure head and the column type elastic body through the sealing rubber ring is poor, the sealing rubber ring is easy to deform, dust and water are introduced, and the structure lacks integrity.

SUMMERY OF THE UTILITY MODEL

The utility model discloses it is low and current integral from the technical problem that column type weighing sensor can't reset fast and effective life is short and the overall sealing performance from the easy slope displacement weighing precision of external force influence to solve current column type weighing sensor weighing center pillar formula elastomer to provide have can form the quick reset with arbitrary angle outward tendency power assorted elastic force and have damage resistance, the longer and the strong overall sealing performance's of effective life a stable form from the column type weighing sensor that resets simultaneously.

The utility model provides a technical scheme that above-mentioned problem adopted does: a stable self-resetting column type weighing sensor comprises an upper pressure head, a column type elastic body and a base; a self-resetting structure is arranged outside the column type elastic body, and the bottom of the self-resetting structure is connected with the base; the self-resetting structure comprises an elastic sleeve sleeved outside the column type elastic body, and the elastic force of the elastic sleeve can give an external inclination force to the column type elastic body at any angle and then quickly reset, so that the column type elastic body is always kept to be a vertical stress central line with the upper pressure head and the base, and the accuracy of weighing precision is ensured.

Preferably, the elastic sleeve is corrugated in cross section.

According to a further technical scheme, the self-resetting structure further comprises an upper resetting cover arranged at the top of the elastic sleeve, and the column type elastic body penetrates through the upper resetting cover and is matched with the upper resetting cover; thereby it is spacing with the column type elastomer top to utilize the lid that resets to go up, avoided current structure column type elastomer to receive the extroversion to empty in weighing sensor's shell, it is spacing to the top of column type elastomer that the lid that resets on especially important should, but go up the lid that resets and link to each other through welding an organic whole with the elastic sleeve, and not die the column type elastomer card, thereby realize that it can naturally incline and reset after receiving the extroversion to the power and the atress central line of column type elastomer is unanimous perpendicular with last pressure head and base all the time.

Preferably, a limiting hole is formed in the upper reset cover, and the edge of the limiting hole is turned upwards to form a limiting hoop matched with the column type elastic body.

According to a further technical scheme, the self-resetting structure further comprises a lower shell arranged at the bottom of the elastic sleeve, and the lower shell is connected with the elastic sleeve and the base through welding respectively; the lower shell sleeve can provide support for the elastic sleeve when the elastic sleeve deforms after being obliquely extruded by the column type elastic body, and the column type elastic body is prevented from being toppled over due to large integral inclination.

According to a further technical scheme, the bottom surface of the column type elastic body is in a structure that the middle part of an arc surface is protruded and the periphery of the arc surface is in a plane structure; the structure avoids the damage failure caused by the fact that the bottom surface of the traditional column type elastic body is of a cambered surface protruding structure, the bottom of the traditional column type elastic body cannot be supported after the traditional column type elastic body is subjected to outward tilting force, and the column type elastic body is wholly tilted; the plane arrangement structure around the arc surface protrusion can provide support to stop the column type elastic body from completely toppling.

According to a further technical scheme, a stress groove matched with the bottom of the column type elastic body is formed in the center of the base, and the column type elastic body is symmetrically arranged in the stress groove; the limiting and resetting after the displacement of the bottom of the column type elastic body are realized through the stress groove.

Preferably, the bottom end of the column type elastic body is provided with a circle of convex limiting convex rings, the limiting convex rings are matched with the stress groove, and the cross section of each limiting convex ring is of an isosceles trapezoid structure, so that the limiting effect is achieved, and the bottom end of the column type elastic body is prevented from being locked with the stress groove.

Preferably, the stress groove is internally and fixedly provided with a limiting column, and the bottom end of the columnar elastic body and the limiting column are correspondingly provided with limiting grooves which are mutually matched to prevent the columnar elastic body from rotating.

Preferably, the middle part of the base is upwards protruded to form a boss matched with the inner ring at the bottom of the elastic sleeve and fixedly connected with the elastic sleeve through welding.

Preferably, the elastic sleeve is integrally formed by a mold and is made of stainless steel 304 or 316L, the elastic force of the elastic sleeve is enhanced by integrally forming the mold and adopting stainless steel 304 or 316L materials, except that the elastic sleeve has the advantages of sealing, rust prevention and corrosion prevention and high strength, and the outward tilting force borne by the column type elastic body can be completely offset, so that the damage caused by the inclined resetting deformation of the elastic sleeve at any time is effectively avoided, and the column type weighing sensor is ensured to have longer effective service life.

Preferably, the top of the column elastomer is fitted in the upper pressure head and sealed with each other by a seal ring.

The technical scheme of the utility model, still including setting up terminal box and the wire outside the lower shell, wire one end is run through the terminal box and is linked to each other with the foil gage in the elastomer, and the other end is epitaxial outside the terminal box.

The utility model discloses compare with prior art owing to adopted above-mentioned technical scheme, the utility model discloses a benefit is: the self-resetting structure is arranged outside the column type elastic body, the elastic sleeve integrally formed by a 304 or 316L stainless steel material die is adopted to be respectively connected with the upper resetting cover and the lower shell sleeve by welding up and down, the outward tilting force borne by the column type elastic body can be completely counteracted by the strong elastic force of the elastic sleeve, the column type elastic body is quickly and effectively self-reset after being inclined by the outward tilting force, the damage caused by the inclined resetting deformation of the elastic sleeve is further avoided, and the column type weighing sensor is ensured to have longer effective service life; meanwhile, the bottom surface of the column type elastic body is provided with a cambered surface protrusion and a peripheral plane structure arrangement, the bottom end of the column type elastic body is provided with a circle of protruding limiting convex ring, the limiting convex ring is correspondingly matched and installed with a stress groove arranged in the center of the base to form an effective support, the column type elastic body is prevented from completely toppling over, and the limitation and reset of the bottom of the column type elastic body after displacement are realized; the utility model, through the structure that the upper reset cover, the elastic sleeve and the lower shell are connected with each other through welding in sequence from top to bottom, on one hand, the column type elastic body has the functions of stronger and rapid self-reset and avoiding the column type elastic body from inclining excessively and toppling over, thereby achieving any precision weighing; on the other hand, the structure is integrally connected through welding, the whole sealing performance is strong, the waterproof performance and the dustproof performance are good, and the column type weighing sensor is ensured to have longer effective service life.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is an enlarged view of the structure in the direction A of FIG. 3;

FIG. 5 is an enlarged view of the structure in the direction B of FIG. 4;

fig. 6 is a schematic perspective view of the self-resetting structure of the present invention;

fig. 7 is a top view of the self-resetting structure of the present invention;

FIG. 8 is a sectional view A-A of FIG. 7;

fig. 9 is a schematic perspective view of the base of the present invention;

shown in the figure: 1. the self-resetting type pressure head comprises an upper pressure head, a sealing ring, a column type elastic body, a cambered surface, a plane, a limiting convex ring, a limiting groove, a base, a stress groove, a limiting column, a boss, a self-resetting structure, a self-resetting cover, an upper resetting cover, a limiting hole, a limiting hoop, an elastic sleeve, a lower shell sleeve, a terminal box and a lead, wherein the column type elastic body is 2a, the cambered surface is 2b, the plane is 2c, the limiting convex ring is 21, the base is 3a, the stress groove is 3b, the limiting column is 3c, the boss is 4c, the self-resetting structure is 4a, the upper resetting cover is 4a, the limiting hole is 41, the limiting hoop is 42, the elastic sleeve is 4b, the lower shell sleeve is 4c, the terminal box is 5, and the lead is 6.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

The embodiment is as follows: a stable self-resetting column type weighing sensor is shown in figures 1 and 2 and comprises an upper pressure head 1, a column type elastic body 2 and a base 3; as shown in fig. 1 and 4, a self-resetting structure 4 is arranged outside the column elastic body 2, wherein the bottom of the self-resetting structure 4 is connected with the base 3; as shown in fig. 4 and 8, the self-resetting structure 4 includes an elastic sleeve 4b sleeved outside the column-type elastic body 2, the cross-sectional structure of the elastic sleeve 4b is corrugated, and the elastic force thereof can give an external inclination force to the column-type elastic body 2 at any angle and then quickly reset, so that the column-type elastic body 2 always keeps a vertical stress central line with the upper pressure head 1 and the base 3, and the accuracy of weighing precision is ensured; more importantly, the self-resetting structure 4 shown in fig. 1 and 4 further comprises an upper resetting cover 4a arranged on the top of the elastic sleeve 4b, and the columnar elastic body 2 penetrates through the upper resetting cover 4a and is matched with the upper resetting cover 4 a; therefore, the top of the column type elastic body 2 is limited by the upper reset cover 4a, the situation that the column type elastic body 2 in the existing structure is toppled into a shell of a weighing sensor by an outward tilting force is avoided, and particularly, the upper reset cover 4a limits the top of the column type elastic body 2, but the upper reset cover 4a is integrally connected with the elastic sleeve 4b through welding and does not clamp the column type elastic body 2, so that the column type elastic body 2 can naturally tilt and reset after being stressed by the outward tilting force, and the stress central line of the column type elastic body 2 is always consistent and vertical to the upper pressure head 1 and the base 3; a limiting hole 41 is formed in the upper reset cover 4a, and the edge of the limiting hole 41 is turned upwards to form a limiting hoop 42 which is matched with the column type elastic body 2; in a further technical scheme, as shown in fig. 3, 4 and 5, the self-resetting structure 4 further comprises a lower casing 4c arranged at the bottom of the elastic casing 4b, and the lower casing 4c is respectively connected with the elastic casing 4b and the base 3 through welding; the lower shell sleeve 4c can provide support for the elastic sleeve 4b when the elastic sleeve is deformed after being obliquely extruded by the column type elastic body 2, so that the column type elastic body 2 is prevented from being toppled due to large integral inclination; according to a further technical scheme, the bottom surface of the column type elastic body 2 is in a structure arrangement that a middle cambered surface 2a protrudes and peripheral planes 2b are arranged; the structure avoids the damage and failure caused by the fact that the bottom of the traditional column type elastic body 2 is of a convex structure with a cambered surface 2a, the bottom of the traditional column type elastic body is not supported after the traditional column type elastic body is subjected to an outward tilting force, and the column type elastic body 2 is wholly tilted; the arrangement structure of the plane 2b which protrudes from the periphery of the cambered surface 2a can provide support to stop the column type elastic body 2 from completely toppling; the center of the base 3 is provided with a stress groove 3a matched with the bottom of the columnar elastic body 2, and the columnar elastic body 2 is symmetrically arranged in the stress groove 3 a; the limiting and resetting of the bottom of the column type elastic body 2 after displacement are realized through the stress groove 3 a; the bottom end of the column type elastic body 2 is provided with a circle of convex limiting convex rings 2c, the limiting convex rings 2c are matched with the stress grooves 3a, the cross sections of the limiting convex rings 2c are in an isosceles trapezoid structure, so that the limiting effect is achieved, and the bottom end of the column type elastic body 2 is prevented from being locked with the stress grooves 3 a; as shown in fig. 3, 4 and 9, a limiting post 3b is fixedly arranged in the force-receiving groove 3a, and a limiting groove 21 is formed at the bottom end of the columnar elastic body 2 corresponding to the limiting post 3b to be matched with each other to prevent the columnar elastic body 2 from rotating; the middle part of the base 3 is upwards protruded to form a boss 3c matched with the inner ring at the bottom of the elastic sleeve 4b and fixedly connected with each other by welding; as shown in fig. 6, 7 and 8, the elastic sleeve 4b is integrally formed by a mold and is made of stainless steel 304 or 316L, and the elastic force of the elastic sleeve 4b is further enhanced by integrally forming the mold and using the stainless steel 304 or 316L material except that the material has the sealing, rust-proof and corrosion-proof properties and high strength, so that the outward-tilting force applied to the column-type elastic body 2 can be completely offset, thereby effectively avoiding the damage caused by the inclined reset deformation of the elastic sleeve 4b at any time and ensuring that the column-type weighing sensor has a longer effective service life; the top of the column type elastic body 2 is assembled in the upper pressure head 1 and sealed with each other through a sealing ring 1 a; the technical scheme of the utility model, still including setting up terminal box 5 and the wire 6 outside lower shell cover 4c, 6 one ends of wire are run through terminal box 5 and are linked to each other with the foil gage in the column type elastomer 2, and the other end is epitaxial outside terminal box 5.

The utility model discloses a theory of operation: when weighing, the self-reset structure 4 is arranged outside the column type elastic body 2, the elastic sleeve 4b integrally formed by a 304 or 316L stainless steel material die is adopted to respectively connect the upper reset cover 4a and the lower shell 4c up and down through welding, the stronger elastic force of the elastic sleeve 4b with the corrugated structure can completely offset the outward tilting force borne by the column type elastic body 2, namely, the column type elastic body 2 is quickly and effectively self-reset after being inclined by the outward tilting force, the damage caused by the inclined reset deformation of the elastic sleeve 4b is further avoided, and the column type weighing sensor is ensured to have longer effective service life; meanwhile, the bottom surface of the column type elastic body 2 is provided with a convex cambered surface 2a which is structurally arranged with a peripheral plane 2b, and the bottom end of the column type elastic body is provided with a circle of convex limiting convex ring 2c which is correspondingly matched and installed with a stress groove 3a arranged at the inner center of the base to form an effective support, so that the column type elastic body 2 is prevented from completely toppling, and the limitation and reset of the bottom of the column type elastic body 2 after displacement are realized; the utility model, through the structure that the upper reset cover 4a, the elastic sleeve 4b and the lower shell sleeve 4c are connected with each other through welding in sequence from top to bottom, on one hand, the column type elastic body 2 has the functions of stronger and rapid self-reset and avoiding the column type elastic body 2 from inclining excessively and toppling over, thereby achieving any precision weighing; on the other hand, the structure is integrally connected through welding, the whole sealing performance is strong, the waterproof performance and the dustproof performance are good, and the column type weighing sensor is ensured to have longer effective service life.

The foregoing embodiments and description have been provided to illustrate the principles and preferred embodiments of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed.

Claims (10)

1. A stable self-resetting column type weighing sensor comprises an upper pressure head (1), a column type elastic body (2) and a base (3); the method is characterized in that: a self-resetting structure (4) is arranged outside the column type elastic body (2) and is respectively connected with the upper pressure head (1) and the base (3); the self-resetting structure (4) comprises an elastic sleeve (4b) sleeved outside the column type elastic body (2).

2. A stabilized self-resetting column-type load cell according to claim 1, wherein: the self-resetting structure (4) further comprises an upper resetting cover (4a) arranged at the top of the elastic sleeve (4b), and the column type elastic body (2) penetrates through the upper resetting cover (4a) and is matched with the upper resetting cover (4 a).

3. A stabilized self-resetting column-type load cell according to claim 2, wherein: a limiting hole (41) is formed in the upper reset cover (4a), and the edge of the limiting hole (41) is turned upwards to form a limiting hoop (42) which is matched with the column type elastic body (2).

4. A stabilized self-resetting column-type load cell according to claim 1, wherein: the self-resetting structure (4) further comprises a lower shell sleeve (4c) arranged at the bottom of the elastic sleeve (4b), and the lower shell sleeve (4c) is connected with the elastic sleeve (4b) and the base (3) through welding respectively.

5. A stabilized self-resetting column-type load cell according to claim 1, wherein: the bottom surface of the column type elastic body (2) is in a structure arrangement with a middle cambered surface (2a) protruding and a peripheral plane (2 b).

6. A stabilized self-resetting column-type load cell according to claim 1, wherein: the center of the base (3) is provided with a stress groove (3a) matched with the bottom of the column type elastic body (2), and the column type elastic body (2) is symmetrically arranged in the stress groove (3 a).

7. A stabilized self-resetting column-type weighing sensor according to claim 6, wherein: the bottom of column type elastomer (2) is equipped with convex spacing bulge loop of round (2c), spacing bulge loop (2c) and atress groove (3a) looks adaptation, the cross-section of spacing bulge loop (2c) is isosceles trapezoid structure.

8. A stabilized self-resetting column-type weighing sensor according to claim 7, wherein: the stress groove (3a) is internally and fixedly provided with a limiting column (3b), and the bottom end of the column type elastic body (2) and the limiting column (3b) are correspondingly provided with a limiting groove (21) which are mutually matched to prevent the column type elastic body (2) from rotating.

9. A stabilized self-resetting column-type weighing cell according to any one of claims 1 to 8, wherein: the middle part of the base (3) protrudes upwards to form a boss (3c) matched with the inner ring at the bottom of the elastic sleeve (4b) and the boss are fixedly connected with each other by welding.

10. A stabilized self-resetting column-type weighing cell according to any one of claims 1 to 8, wherein: the elastic sleeve (4b) is integrally formed by adopting a die, and the elastic sleeve (4b) is made of stainless steel 304 or 316L.

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