阅读说明：本技术 称重模块及包括其的称重系统 (Weighing module reaches weighing system including it ) 是由 吴友义 巢志鹤 李春辉 张萍 蔡金杰 丁成刚 于 2020-04-14 设计创作，主要内容包括：本发明提供了一种称重模块及包括其的称重系统,所述称重模块包括：第一折弯板和第二折弯板分别固定在板的底端面的两端；第一折弯板和第二折弯板分别固定在底部的上端面的两端；顶板上的第一折弯板和底板上的第二折弯板上下对应,顶板上的第二折弯板和底板上的第一折弯板上下对应；柱式传感器安装在顶板和底板之间；簧片套设在柱式传感器上,且簧片的两端通过防倾覆螺栓安装在第一折弯板和第二折弯板之间,簧片的一端与顶板上的第一折弯板连接,另一端与底板上的第一折弯板连接。本发明结构新颖、外形简洁,具备过载保护、防倾覆、维护方便等功能,采用了弹性水平限位装置,可以在限位的同时保持系统的柔性,对称量精度没有影响。(The invention provides a weighing module and a weighing system comprising the same, wherein the weighing module comprises: the first bending plate and the second bending plate are respectively fixed at two ends of the bottom end face of the plate; the first bending plate and the second bending plate are respectively fixed at two ends of the upper end surface of the bottom; the first bending plate on the top plate corresponds to the second bending plate on the bottom plate up and down, and the second bending plate on the top plate corresponds to the first bending plate on the bottom plate up and down; the column sensor is arranged between the top plate and the bottom plate; the reed is sleeved on the column type sensor, two ends of the reed are installed between the first bending plate and the second bending plate through the anti-overturning bolt, one end of the reed is connected with the first bending plate on the top plate, and the other end of the reed is connected with the first bending plate on the bottom plate. The invention has novel structure and simple appearance, has the functions of overload protection, overturn prevention, convenient maintenance and the like, adopts the elastic horizontal limiting device, can keep the flexibility of the system while limiting, and has no influence on the precision of the symmetry.)

1. A weighing module, characterized in that the weighing module comprises:

the bending device comprises a top plate, a group of first bending plates and a group of second bending plates, wherein the first bending plates and the second bending plates are respectively fixed at two ends of the bottom end face of the top plate;

the bottom plate, the other group of first bending plates and the second bending plates are respectively fixed at two ends of the upper end face of the bottom;

the first bending plate on the top plate corresponds to the second bending plate on the bottom plate up and down, and the second bending plate on the top plate corresponds to the first bending plate on the bottom plate up and down;

a pillar sensor mounted between the top plate and the bottom plate;

the reed, the reed cover is established on the column sensor, just the both ends of reed are installed through preventing the bolt that topples first bending board with between the second bending board, the one end of reed with first bending board on the roof is connected, the other end with first bending board on the bottom plate is connected.

2. The weighing module of claim 1, wherein the anti-tipping bolt passes through the second bending plate, the spring plate and the first bending plate in sequence, and the end is fixed by a positioning nut, and a first gap is provided between the positioning nut and the first bending plate.

3. The weighing module of claim 2, wherein said positioning nut comprises a first positioning post and a second positioning post, said second positioning post is located on the top end face of said first positioning post, and the junction of said second positioning post and said first positioning post is a positioning step, said positioning nut is mounted on said second positioning post.

4. The weighing module of claim 1, wherein the first and second bending plates are C-shaped plates or U-shaped plates.

5. A weighing module according to claim 2 wherein a spring press pocket is provided between the anti-overturning bolt and the second folding plate, the spring press pocket having a second gap between its end and the spring.

6. The weighing module of claim 5, wherein the sum of the first gap and the second gap is between 3mm and 5 mm.

7. The weighing module of claim 5, wherein the inner diameter of the reed press sleeve satisfies the relationship D + (0.3 mm-0.5 mm), where D is the nominal diameter of the anti-overturning bolt.

8. The weighing module of claim 7, wherein the two ends of the reed are respectively provided with a first through hole, and the width of the first through hole satisfies the relation D + (0.3 mm-0.5 mm), wherein D is the nominal diameter of the overturn-preventing bolt.

9. The weighing module of claim 8, wherein the second bending plate is provided with a second through hole, and a gap between the second through hole and the outer circle of the reed pressing sleeve is 2 mm-3 mm.

10. The weighing module of claim 1, wherein the first and second bending panels are provided with reinforcing ribs on the inside and/or outside of the connection with the top and bottom panels.

11. The weighing module of claim 8, wherein two ends of the spring are bent upwards to form two step surfaces, the first through hole is formed in the step surfaces, and the first through hole is an elliptical hole or a kidney hole.

12. A weighing system, characterized in that it comprises a weighing module according to any one of claims 1-11.

Technical Field

The invention relates to the field of weighing modules, in particular to a weighing module and a weighing system comprising the same.

Background

In the prior art, the weighing module is widely applied to storage containers such as charging buckets, hoppers and reaction kettles and is used for weighing the weight of substances in the containers.

The main structure of the current mainstream weighing module can be divided into a moving part and a static part. The moving part comprises an upper top plate, two bent C-shaped plates and a middle plate, and the four plates are connected through welding. The moving parts have the disadvantages of complex structure, large welding amount, high processing cost and the like. On the basis of the moving part, mechanical accessories for connecting horizontal limit are welded, and appearance defects such as seam undercut, welding beading and the like often occur when the mechanical accessories are welded.

In addition, the stationary part is a bottom plate, and the clearance interface between the moving part and the stationary part is located at the bottom of the module. The structure causes that dust and impurities are invaded in the gap to influence the poor feedback of weighing, and the defect of complex maintenance is brought. In addition, rigid constraint is generally adopted for horizontal displacement constraint, and the precision weighing is greatly influenced.

Therefore, how to develop a module which has a simple structure, low cost, easy installation and maintenance and horizontal constraint without affecting the weighing performance is a core problem to be solved urgently by those skilled in the art.

Disclosure of Invention

The invention aims to overcome the defects of complex maintenance, high processing cost and the like of a weighing module in the prior art, and provides the weighing module and a weighing system comprising the same.

The invention solves the technical problems through the following technical scheme:

a weighing module characterized in that it comprises:

the bending device comprises a top plate, a group of first bending plates and a group of second bending plates, wherein the first bending plates and the second bending plates are respectively fixed at two ends of the bottom end face of the top plate;

the bottom plate, the other group of first bending plates and the second bending plates are respectively fixed at two ends of the upper end face of the bottom;

the first bending plate on the top plate corresponds to the second bending plate on the bottom plate up and down, and the second bending plate on the top plate corresponds to the first bending plate on the bottom plate up and down;

a pillar sensor mounted between the top plate and the bottom plate;

the reed, the reed cover is established on the column sensor, just the both ends of reed are installed through preventing the bolt that topples first bending board with between the second bending board, the one end of reed with first bending board on the roof is connected, the other end with first bending board on the bottom plate is connected.

According to one embodiment of the invention, the overturn-preventing bolt sequentially penetrates through the second bending plate, the spring plate and the first bending plate, and the end part of the overturn-preventing bolt is fixed by a positioning nut, and a first gap is formed between the positioning nut and the first bending plate.

According to one embodiment of the invention, the positioning nut comprises a first positioning column and a second positioning column, the second positioning column is positioned on the top end surface of the first positioning column, a positioning step is formed at the joint of the second positioning column and the first positioning column, and the positioning nut is installed on the second positioning column.

According to one embodiment of the present invention, the first and second bending plates are C-shaped plates or U-shaped plates.

According to one embodiment of the invention, a spring pressing sleeve is arranged between the overturn-preventing bolt and the second bending plate, and a second gap is formed between the end of the spring pressing sleeve and the spring.

According to an embodiment of the invention, the sum of the first gap and the second gap is between 3mm and 5 mm.

According to one embodiment of the invention, the inner diameter of the spring pressing sleeve satisfies the relation D + (0.3 mm-0.5 mm), where D is the nominal diameter of the overturn-preventing bolt.

According to one embodiment of the invention, the two ends of the reed are respectively provided with a first via hole, the width of the first via hole satisfies a relation D + (0.3 mm-0.5 mm), wherein D is the nominal diameter of the overturn-preventing bolt.

According to one embodiment of the invention, the second bending plate is provided with a second through hole, and the gap between the second through hole and the excircle of the reed pressing sleeve is 2-3 mm.

According to one embodiment of the present invention, the first bending plate and the second bending plate are provided with reinforcing ribs inside and/or outside the connection between the top plate and the bottom plate.

According to one embodiment of the invention, two ends of the spring plate are bent upwards to form two step surfaces, the first via hole is formed in the step surfaces, and the first via hole is an elliptical hole or a kidney hole.

The invention also provides a weighing system which is characterized by comprising the weighing module.

The positive progress effects of the invention are as follows:

the weighing module and the weighing system comprising the same have novel structures and simple appearance, have the functions of overload protection, overturn prevention, convenient maintenance and the like, adopt the elastic horizontal limiting device, can keep the flexibility of the system while limiting, and have no influence on the precision of the weighing.

Structurally, the weighing module is simple and attractive and has a symmetrical structure.

Functionally, the weighing module has the functions of overload protection, overturn prevention, convenient maintenance and the like, and is provided with an elastic horizontal limiting device.

In terms of processing, the first bending plate and the second bending plate in the weighing module can use raw materials with the same size and bending dies with the same size, and the first bending plate and the second bending plate can be designed to be completely consistent in size except for the size of the middle through hole. Blanking, cutting, bending and stamping the reinforcing ribs are all the same, the processing is convenient, and the cost is low.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings in which like reference numerals denote like features throughout the several views, wherein:

fig. 1 is a schematic structural view of a weighing module of the present invention.

Fig. 2 is a cross-sectional view taken along the line M-M in fig. 1.

FIG. 3 is a schematic view of the mounting structure of the top plate, the first bending plate and the second bending plate of the weighing module according to the present invention.

Fig. 4 is a schematic structural view of a reinforcing rib arranged at the joint of the first bending plate or the second bending plate and the top plate in the weighing module of the present invention.

Fig. 5 is a schematic view of an installation structure of a bottom plate, a first bending plate and a second bending plate in the weighing module of the present invention.

Fig. 6 is a schematic structural view of a reinforcing rib arranged at the joint of the first bending plate or the second bending plate and the bottom plate in the weighing module of the present invention.

Figure 7 is a front view of a reed in a weighing module of the present invention.

Figure 8 is a top view of a reed in a weighing module of the present invention.

FIG. 9 is a schematic view of the structure of the overturn preventing bolt in the weighing module of the present invention.

[ reference numerals ]

Top plate 10

First bending plate 20

Second bending plate 30

Base plate 40

Pillar sensor 50

Spring plate 60

Upper bearing head 11

Lower bearing head 41

Overturn-preventing bolt 70

Positioning nut 71

First clearance L1

First positioning post 711

Second positioning column 712

Positioning step A

Spring plate pressing sleeve 80

First via 61

Second via hole 31

Reinforcing rib 90

Step surface 62

Second clearance L2

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

Further, although the terms used in the present invention are selected from publicly known and used terms, some of the terms mentioned in the description of the present invention may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein.

Furthermore, it is required that the present invention is understood, not simply by the actual terms used but by the meaning of each term lying within.

Fig. 1 is a schematic structural view of a weighing module of the present invention. Fig. 2 is a cross-sectional view taken along the line M-M in fig. 1. FIG. 3 is a schematic view of the mounting structure of the top plate, the first bending plate and the second bending plate of the weighing module according to the present invention. Fig. 4 is a schematic structural view of a reinforcing rib arranged at the joint of the first bending plate or the second bending plate and the top plate in the weighing module of the present invention. Fig. 5 is a schematic view of an installation structure of a bottom plate, a first bending plate and a second bending plate in the weighing module of the present invention. Fig. 6 is a schematic structural view of a reinforcing rib arranged at the joint of the first bending plate or the second bending plate and the bottom plate in the weighing module of the present invention.

Figure 7 is a front view of a reed in a weighing module of the present invention. Figure 8 is a top view of a reed in a weighing module of the present invention. FIG. 9 is a schematic view of the structure of the overturn preventing bolt in the weighing module of the present invention.

As shown in fig. 1 to 9, the present invention provides a weighing module including a top plate 10, a first bending plate 20, a second bending plate 30, a bottom plate 40, a pillar sensor 50, and a spring plate 60. Wherein, a set of the first bending plate 20 and the second bending plate 30 are respectively fixed at two ends of the bottom end surface of the top plate 10. Another set of the first bending plate 20 and the second bending plate 30 are fixed to both ends of the upper end surface of the bottom 40, respectively. The first bending plate 20 on the top plate 10 corresponds to the second bending plate 30 on the bottom plate 40 up and down, the second bending plate 30 on the top plate 10 corresponds to the first bending plate 20 on the bottom plate 40 up and down, namely, the first bending plate 20 and the second bending plate 30 are respectively arranged in an X-shaped opposite direction, so that the limiting function is realized.

The pillar sensor 50 is installed between the top plate 10 and the bottom plate 40, an upper pressure head 11 is provided on a bottom end surface of the top plate 10, a lower pressure head 41 is provided on an upper end surface of the bottom plate 40, and the pillar sensor 50 is provided between the upper pressure head 11 and the lower pressure head 41.

The reed 60 is sleeved on the pillar sensor 50, two ends of the reed 60 are installed between the first bending plate 20 and the second bending plate 30 through the anti-overturning bolt 70, one end of the reed 60 is connected with the first bending plate 20 on the top plate 10, and the other end is connected with the first bending plate 20 on the bottom plate 40.

Preferably, the anti-overturning bolt 70 passes through the second bending plate 30, the spring plate 60 and the first bending plate 20 in sequence, and the end is fixed by a positioning nut 71, and a first gap L1 is formed between the positioning nut 71 and the first bending plate 20.

Further, the positioning nut 71 includes a first positioning column 711 and a second positioning column 712, the second positioning column 712 is located on the top end surface of the first positioning column 711, and a joint between the second positioning column 712 and the first positioning column 711 is a positioning step a, and the positioning nut 71 is mounted on the second positioning column 712 and located on the positioning step a.

The first and second bending plates 20 and 30 in this embodiment are preferably C-shaped plates or U-shaped plates.

More preferably, a spring pressing sleeve 80 is disposed between the overturn preventing bolt 70 and the second folding plate 30, and a second gap L2 is provided between the end of the spring pressing sleeve 80 and the spring 60 to maintain the vertical freedom of the spring. The sum of the first gap L1 and the second gap L2 in the present embodiment is preferably 3mm to 5 mm.

The inner diameter of the reed pressing sleeve 80 satisfies the relation D + (0.3 mm-0.5 mm), wherein D is the nominal diameter of the overturn-preventing bolt.

The two ends of the reed 60 are respectively provided with a first via hole 61, the width of the first via hole 61 satisfies a relation D + (0.3 mm-0.5 mm), wherein D is the nominal diameter of the overturn-preventing bolt. The second bending plate 30 is provided with a second through hole 31, and the gap between the second through hole 31 and the outer circle of the reed pressing sleeve 80 is preferably 2 mm-3 mm.

In addition, the first bending plate 20 and the second bending plate 30 may be provided with reinforcing ribs 90 on the inner side and/or the outer side of the connection with the top plate 10 and the bottom plate 40, respectively.

Preferably, two ends of the spring 60 are bent upwards to form two step surfaces 62, the first through hole 61 is opened on the step surfaces 62, and the first through hole 61 is preferably an elliptical hole or a kidney hole. The reed of this kind of structure plays two aspects effects, and firstly the department of bending can optionally punching press the strengthening rib, strengthens the elasticity of reed, plays more steady horizontal limit function. And secondly, the main body part of the reed can be bent downwards to avoid the wiring of the sensor as much as possible, so that the occurrence of interference is avoided.

It is noted that the leaf 60 must be attached to the first folded plate 20 of the top panel on one side and to the first folded plate 20 of the bottom panel on one side. Because the aperture on the first bending plate is only 0.3-0.5 mm larger than the outer diameter D of the overturn-preventing bolt, the horizontal displacement can be limited if the horizontal force is slightly brought. This is an elastic restraint system with little effect on the accuracy of the symmetry due to the presence of the gap of 0.5mm and the elasticity of the spring itself.

Of course, the spring 60 can be designed into a flat plate shape or a wave shape, but the holes on both sides of the spring 60 can not be made into pure round holes, elliptical holes or kidney-shaped holes.

When weighing is performed, the top plate assembly (including the top plate, the first bending plate and the second bending plate) moves downward by about a few tenths of a millimeter, and accordingly the spring plate is also deformed by a few tenths of a millimeter in the vertical direction. To give the reed a degree of freedom to deform vertically, the reed press sleeve does not fully compress the reed against the first folded plate, but leaves a gap of second clearance L2, the second clearance L2 being only slightly larger than the distance the system moves down when weighing. In addition, in the vertical direction, the reed can be considered to be a cantilever beam structure, and due to the elasticity of the reed, when the reed is subjected to the very small load action in the vertical direction, the deformation of the reed in the vertical direction is far greater than the downward movement height of the top plate assembly during weighing, so that the counter force of the reed in the vertical direction during weighing can be almost ignored for weighing.

The invention also provides a weighing system comprising a weighing module as described above. For example, in cans, hoppers, reactors, etc. The weighing module has simple structure and convenient processing; and integrates the functions of horizontal elastic limit, overload protection, overturn prevention protection and the like.

According to the above description, the weighing module of the present invention has a structure in which a set of first bending plates 20, second bending plates 30 and top plate 10 are welded to form a top plate assembly, and another set of first bending plates 20, second bending plates 30 and bottom plate 40 are welded to form a bottom plate assembly.

With regard to overall structure, except for roof subassembly and bottom plate subassembly, all the other are machined part or purchase the standard component outward, easily mass production, scale customization production, and roof subassembly and bottom plate subassembly are all formed by a flat board (roof and bottom plate) and two C shaped plate (being first bending plate 20 and second bending plate 30) welding, and the welding only goes on in C shaped plate root border, and welding space is sufficient, and welding operation is convenient, easily realizes automatic weld. The C-shaped plate side spoke stamping reinforcing rib can enhance the bearing capacity of the structure on one hand; on one hand, the welding amount can be increased, and the horizontal load resistance is enhanced; on the other hand, the structure saturation and the aesthetic feeling can be enhanced.

Under the normal weighing condition, all parts are arranged as shown in fig. 1, the top plate 10 is connected with the bucket supporting legs through bolts, the weight is loaded on the top plate 10, and a complete weighing system is formed by the upper bearing head 11, the column type sensor 50, the lower bearing head 41 and the bottom plate 40. It has the following functions:

firstly, an overload protection function: if the system is overloaded and the sensor is crushed, the left and right first bending plates 20 contact with the second bending plate 30, and overload is borne by the contact of the two groups of plates on the two sides, so that the whole charging bucket system is still safe.

Secondly, the overturn prevention function: the overturn-preventing bolt and the overturn-preventing nut have the overturn-preventing function. When the system is tipped over due to wind load or earthquake load, the first bending plate and the second bending plate on the same side can be separated. When the separation distance reaches L1+ L2, the anti-toppling bolt and nut will then clamp the first and second bending plates, preventing toppling from occurring, typically set at 3-5 mm for L1+ L2. The overturn-preventing bolt can use a standard bolt, but in order to guarantee the distance of L1, a step is designed at the end of the bolt for positioning a nut, and the distance of L1 is guaranteed.

Thirdly, the maintenance is convenient: with the structure all around full arrangement during conventional module design, it is different to cause to be difficult to provide enough space to place jacking device when maintaining. Because the first board of bending of major structure, the second board of bending are arranged in the left and right sides in this application, the rear side space of module is sufficient, and the change that uses the jacking device to carry out the sensor of being convenient for is the maintenance, and the operation is convenient. And the dynamic and static joint surfaces are positioned in the middle of the module, so that the interference possibly caused by the invasion of impurities is effectively prevented, and the maintenance difficulty is reduced to a certain extent.

Fourthly, horizontal limiting function: for the charging bucket or the reaction kettle with stirring operation, horizontal displacement can exist, if the horizontal displacement is not restrained, contact interference between module connecting pieces can be caused, weighing precision is influenced, and even structural damage is induced. The application scientifically adopts the reed type elastic limiting structure to combine with the first bending plate, the second bending plate, the overturn-preventing bolt and the reed pressing sleeve to complete the horizontal limiting function.

There are two types of conventional horizontal stops: spacing and horizontal pull rod of machinery, wherein machinery is spacing only to rely on the interval between two components to carry on spacingly, after horizontal force drives one side component horizontal migration certain distance contact another component, realizes that hard contact carries on spacingly, and this kind of limit structure is simple violent, and can cause friction and wearing and tearing after two components contact, and the precision is weighed in the friction can reducing, and wearing and tearing easily cause component surface destruction. When the horizontal pull rod is used in a large-shaking occasion, premature failure is easily caused by fatigue, and when the installation axis of the pull rod is not horizontal, vertical component force can be generated to influence weighing.

For example, assuming that the nominal diameter of the anti-overturning bolt 70 is D, the inner diameter D + 0.3-0.5 of the leaf pressing sleeve 80 is further designed, the width W of the via hole on both sides of the leaf is D + 0.3-0.5, the diameter D1 of the via hole of the first bending plate 20 is D + 0.3-0.5, and the diameter D2 of the via hole of the second bending plate 30 may be larger, for example, the gap between D2 and the outer circle of the leaf pressing sleeve may be 2-3 mm.

As shown in figure 1, when the weighing module is subjected to horizontal force from left to right, the top plate assembly tends to move rightwards, and the first bending plate on the right side of the top plate assembly drives the overturn-preventing bolt and the reed pressing sleeve on the right side to move rightwards due to the small gap between the D1 and the D. For the left structural portion of the weighing module, the left first bending plate on the floor assembly constrains the left anti-overturning bolt to remain stationary due to the floor assembly being constrained to the foundation. The reed between two bolts receives tensile deformation like this, because the reed has very high rigidity and elasticity, the reed is taut and produces the counter-force and then restricts the bottom plate subassembly and move right, plays horizontal limit function.

However, the elasticity of the reed is not a rigid body, so that the module still has certain freedom degree of movement, and the weak freedom degree ensures that the module can still maintain higher weighing precision when horizontally constrained. The elasticity of the reed can be properly enhanced and the restraint can be improved on the occasion with higher weighing precision. For the occasion with low weighing requirement, the reed can use softer material, reduces the restraint.

Similarly, when the horizontal force is from right to left, the reed is compressed to play the horizontal limiting function. In addition, the through holes on the two sides of the reed are not round holes but are designed to be kidney-shaped holes, so that the horizontal direction movement in a plane is limited, but the vertical direction movement in the plane is not limited, and the weighing performance can be kept as much as possible. The deformation of the reed in the vertical direction is far greater than the moving displacement of the top plate assembly during weighing, and the influence on weighing can be ignored

In addition, if the weighing system is suddenly subjected to an extremely serious horizontal force which far exceeds the restraint capability of the reed, the reed pressing sleeve on the periphery of the overturn-preventing bolt can be in contact with the through hole of the second bending plate to perform rigid limiting, and another overload protection function is realized.

In conclusion, the weighing module and the weighing system comprising the same have novel structures and simple appearance, have the functions of overload protection, overturn prevention, convenient maintenance and the like, can keep the flexibility of the system while limiting by adopting the elastic horizontal limiting device, and have no influence on the precision of the weighing.

Structurally, the weighing module is simple and attractive and has a symmetrical structure.

Functionally, the weighing module has the functions of overload protection, overturn prevention, convenient maintenance and the like, and is provided with an elastic horizontal limiting device.

In terms of processing, the first bending plate and the second bending plate in the weighing module can use raw materials with the same size and bending dies with the same size, and the first bending plate and the second bending plate can be designed to be completely consistent in size except for the size of the middle through hole. Blanking, cutting, bending and stamping the reinforcing ribs are all the same, the processing is convenient, and the cost is low.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.