CN209764240U

CN209764240U - Weighing sensor and dynamic truck scale

Info

Publication number: CN209764240U
Application number: CN201920510528.1U
Authority: CN
Inventors: 吴连松; 姚飞; 邓永强
Original assignee: Beijing Wanji Technology Co Ltd
Current assignee: Beijing Wanji Technology Co Ltd
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2019-12-10
Anticipated expiration: 2029-04-15

Abstract

The utility model provides a weighing sensor and dynamic truck scale, wherein, weighing sensor includes: the upper support body is provided with a first mounting hole; the lower support body is provided with a second mounting hole, and the lower support body is arranged opposite to the upper support body and forms a mounting space with the upper support body; the elastic deformation body is arranged in the mounting space, and a strain gauge is attached to the elastic deformation body; the first connecting piece is fixed at the first mounting hole, and part of the first connecting piece extends into the mounting space and is fixedly connected with the elastic deformation body; and the second connecting piece is fixed at the second mounting hole, and one part of the second connecting piece extends into the mounting space and is fixedly connected with the elastic deformation body. The utility model provides a dynamic weighing sensor for truck scale's among the prior art structure unreasonable, its shock resistance is relatively poor, has the phenomenon of easy damage, seriously influences the job stabilization nature's of truck scale problem.

Description

Weighing sensor and dynamic truck scale

Technical Field

The utility model relates to a dynamic weighing technical field particularly, relates to a dynamic weighing sensor for truck scale's institutional advancement.

Background

The existing truck scale mostly uses four weighing sensors to support a bearing platform (namely a simple support structure), the bearing platform transfers the whole weight of a vehicle to the weighing sensors, the weighing sensors generate electric signals by sensing the vertical downward pressure of the bearing platform, and then the electric signals generated by the weighing sensors are analyzed and processed to obtain the weight of the vehicle.

The weighing sensor for the dynamic automobile scale in the prior art has the characteristics of unreasonable structure, poor impact resistance and easiness in damage, so that the working stability of the automobile scale is seriously influenced; in addition, the existing weighing sensor also has the problem of poor waterproof and dustproof performance.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a weighing sensor and dynamic truck scale to it is unreasonable to solve the structure of weighing sensor for the dynamic truck scale among the prior art, and its shock resistance is relatively poor, has the phenomenon of fragile, seriously influences the job stabilization nature's of truck scale problem.

In order to achieve the above object, according to an aspect of the present invention, there is provided a weighing sensor including: the upper support body is provided with a first mounting hole; the lower support body is provided with a second mounting hole, and the lower support body is arranged opposite to the upper support body and forms a mounting space with the upper support body; the elastic deformation body is arranged in the mounting space, and a strain gauge is attached to the elastic deformation body; the first connecting piece is fixed at the first mounting hole, and part of the first connecting piece extends into the mounting space and is fixedly connected with the elastic deformation body; and the second connecting piece is fixed at the second mounting hole, and one part of the second connecting piece extends into the mounting space and is fixedly connected with the elastic deformation body.

Further, the weighing sensor further comprises a deformation support ring, the deformation support ring is arranged in the installation space and located on the outer peripheral side of the elastic deformation body, the first end of the deformation support ring is connected with the upper support body, and the second end of the deformation support ring is connected with the lower support body.

Furthermore, the upper supporting body and the lower supporting body are both steel plates, the cross section of the deformation supporting ring is an axisymmetric figure, and the deformation supporting ring is welded with the upper supporting body and the lower supporting body.

Further, the rigidity of the elastic deformation body is smaller than that of the upper support body.

Further, the elastic deformation body is of an S-shaped rib plate structure, wherein the elastic deformation body comprises an upper connecting arm, a transition arm and a lower connecting arm which are sequentially connected, the first connecting piece is connected with the upper connecting arm, and the second connecting piece is connected with the lower connecting arm.

Further, the elastic deformation body is made of a steel plate, the first connecting piece and the second connecting piece are both steel elements, and the first connecting piece and the second connecting piece are both in threaded connection with the elastic deformation body.

Furthermore, the first mounting hole is a counter bore, the first connecting piece is a bolt, and the first connecting piece stops at the step surface of the first mounting hole and is in threaded connection with part of the inner wall surface of the first mounting hole; and/or the second mounting hole is a counter bore, the second connecting piece is a bolt, and the second connecting piece stops at the step surface of the second mounting hole and is in threaded connection with part of the inner wall surface of the second mounting hole.

Furthermore, a plurality of first mounting holes are formed, a plurality of first connecting pieces are formed, and the plurality of first mounting holes and the plurality of first connecting pieces are arranged in a one-to-one correspondence manner; the second mounting hole is a plurality of, and the second connecting piece is a plurality of, and a plurality of second mounting holes set up with a plurality of second connecting piece one-to-one.

Further, the thickness of the upper support or the lower support is 40mm or more and 100mm or less.

According to the utility model discloses an on the other hand provides a dynamic truck scale, include: the supporting structure layer is used for being connected with the installation foundation; the bearing structure layer is arranged at intervals with the support structure layer and is positioned above the support structure layer, and a weighing bearing surface is formed on the surface of one side of the bearing structure layer, which is far away from the support structure layer; the weighing sensor is the weighing sensor, an upper supporting body of the weighing sensor is fixedly connected with the bearing structure layer, and a lower supporting body of the weighing sensor is fixedly connected with the bearing structure layer.

By applying the technical proposal of the utility model and optimizing the structure of the weighing sensor for the dynamic automobile scale, the weighing sensor with a new structural form is provided, in particular, the weighing sensor comprises an upper support body, a lower support body, an elastic deformation body, a first connecting piece and a second connecting piece, wherein the upper support body is provided with a first mounting hole, the lower support body is provided with a second mounting hole, the lower support body and the upper support body are arranged oppositely, and forming an installation space with the upper support body, arranging the elastic deformation body in the installation space, attaching a strain gauge on the elastic deformation body, fixing the first connecting piece at the first installation hole, and a part of the first connecting piece extends into the mounting space and is fixedly connected with the elastic deformation body, the second connecting piece is fixed at the second mounting hole, and a part of the second connecting piece extends into the mounting space and is fixedly connected with the elastic deformation body. The weighing sensor with the structure is strong in impact resistance and good in structural stability, has the characteristic of long-term stable use, and effectively ensures the dynamic weighing measurement precision of the dynamic truck scale on the vehicle.

specifically, when a vehicle runs through the dynamic truck scale, the upper support body of the weighing sensor is pressed by the vehicle, so that the pressure of the vehicle on the upper support body is transmitted to the elastic deformation body, the deformation of the elastic deformation body can be measured by the strain gauge and then converted into a weighing signal to be sent outwards, and the dynamic weighing measurement of the weighing sensor on the vehicle is realized; the utility model provides a first connecting piece of dynamic truck scale utilize the first mounting hole of last supporter fixed and with elasticity morphism fixed connection, the second connecting piece utilize the second mounting hole of bottom suspension body fixed and with elasticity morphism fixed connection, not only ensured the connection stability between last supporter, elasticity morphism and the bottom suspension body, promoted weighing sensor's overall structure intensity moreover effectively.

drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of a load cell according to an alternative embodiment of the invention;

Fig. 2 shows a schematic view of the internal structure of the load cell of fig. 1.

Wherein the figures include the following reference numerals:

100. An installation space; 10. an upper support; 11. a first mounting hole; 20. a lower support; 21. a second mounting hole; 30. an elastic deformation body; 31. an upper connecting arm; 32. a transition arm; 33. a lower connecting arm; 40. a first connecting member; 50. a second connecting member; 60. and (5) deforming the support ring.

Detailed Description

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

in order to solve the structure of the weighing sensor for the dynamic automobile scale among the prior art unreasonable, its shock resistance is relatively poor, there is the phenomenon of easy damage, seriously influence the job stabilization nature's of truck scale problem, the utility model provides a weighing sensor and dynamic automobile scale, wherein, dynamic automobile scale includes bearing structure layer, bearing structure layer and weighing sensor, bearing structure layer is used for being connected with the installation foundation, bearing structure layer and bearing structure layer interval set up, and lie in bearing structure layer's top, bearing structure layer's the surface that deviates from bearing structure layer one side forms the loading end of weighing, weighing sensor is above-mentioned and following weighing sensor, last supporter 10 and bearing structure layer fixed connection of weighing sensor, weighing sensor's under bracing body 20 and bearing structure layer fixed connection. The dynamic truck scale with the structure not only has high precision of dynamic weighing measurement of the vehicle, but also has lower processing and manufacturing cost and high practicability.

As shown in fig. 1 and 2, by optimizing the structure of the load cell for dynamic vehicle weighing, a new structural form of the load cell is provided, and in particular, the load cell includes an upper support 10, a lower support 20, an elastic deformation body 30, a first connecting member 40 and a second connecting member 50, wherein, the upper supporting body 10 is provided with a first mounting hole 11, the lower supporting body 20 is provided with a second mounting hole 21, the lower supporting body 20 is arranged opposite to the upper supporting body 10, and forms an installation space 100 with the upper supporter 10, the elastic deformation body 30 is arranged in the installation space 100, a strain gauge is attached on the elastic deformation body 30, the first connecting piece 40 is fixed at the first installation hole 11, and a portion of the first connecting member 40 is inserted into the installation space 100 and is fixedly coupled with the elastic deformation body 30, the second connecting member 50 is fixed at the second installation hole 21, and a portion of the second connecting member 50 extends into the installation space 100 and is fixedly coupled to the elastic deformation body 30. The weighing sensor with the structure is strong in impact resistance and good in structural stability, has the characteristic of long-term stable use, and effectively ensures the dynamic weighing measurement precision of the dynamic truck scale on the vehicle.

Specifically, when a vehicle runs through the dynamic truck scale, the upper support body 10 of the weighing sensor is pressed by the vehicle, so that the pressure of the vehicle on the upper support body is transmitted to the elastic deformation body 30, the deformation of the elastic deformation body 30 can be measured by the strain gauge and then converted into a weighing signal to be sent outwards, and the dynamic weighing measurement of the vehicle by the weighing sensor is realized; the first connecting piece 40 of the dynamic automobile scale of the application is fixed by the first mounting hole 11 of the upper support body 10 and fixedly connected with the elastic deformation body 30, and the second connecting piece 50 is fixed by the second mounting hole 21 of the lower support body 20 and fixedly connected with the elastic deformation body 30, so that the connection stability among the upper support body 10, the elastic deformation body 30 and the lower support body 20 is ensured, and the overall structural strength of the weighing sensor is effectively improved.

As shown in fig. 1 and 2, the load cell further includes a deformation support ring 60, the deformation support ring 60 is disposed in the installation space 100 and located at an outer circumferential side of the elastic deformation body 30, and a first end of the deformation support ring 60 is connected to the upper support body 10 and a second end of the deformation support ring 60 is connected to the lower support body 20. The deformation support ring 60 not only can play a role in supporting the upper support body 10 and the lower support body 20 in the circumferential direction, and avoids the elastic deformation body 30 from being subjected to an excessive stress and generating irreversible deformation, so that the working stability of the weighing sensor is ensured, but also the deformation support ring 60 can play a role in sealing and protecting the elastic deformation body 30, and rainwater or dust is prevented from entering the installation space 100 and contacting the strain gauge to influence the weighing measurement precision of the weighing sensor.

Optionally, the upper support 10 and the lower support 20 are both steel plates, the cross section of the deformation support ring 60 is an axisymmetric figure, and the deformation support ring 60 is welded to the upper support 10 and the lower support 20. Each structural component of the weighing sensor with the structure is convenient for material taking, so that the processing and manufacturing difficulty of the weighing sensor is reduced, the economy of the weighing sensor is improved, and the market competitiveness of the dynamic motor scale is promoted.

optionally, the cross-sectional shape of the deformable support ring 60 is one of a circular ring, an elliptical ring, and a polygonal ring.

In order to ensure that the elastic deformation body 30 is more easily deformed than the upper support 10 when compressed, optionally, the rigidity of the elastic deformation body 30 is less than the rigidity of the upper support 10.

As shown in fig. 2, the elastic deformation body 30 is a rib structure having an S-shape, wherein the elastic deformation body 30 includes an upper connecting arm 31, a transition arm 32 and a lower connecting arm 33 connected in sequence, wherein the first connecting member 40 is connected to the upper connecting arm 31, and the second connecting member 50 is connected to the lower connecting arm 33. In this way, the upper connecting arm 31 and the lower connecting arm 33 play a role of force buffering, effectively improving the elastic deformation capacity of the elastic deformation body 30.

In view of the manufacturing economy of the elastic deformation body 30 and the stability of the connection with the first and second connection members 40 and 50, alternatively, the elastic deformation body 30 is made of a steel plate, the first and second connection members 40 and 50 are both steel members, and the first and second connection members 40 and 50 are both screw-connected with the elastic deformation body 30.

In the illustrated embodiment of the present application, in order to further simplify the structure of the load cell, so that the load cell is easy to manufacture and the economic cost of the load cell is reduced, the first mounting hole 11 is a counter bore, the first connecting member 40 is a bolt, and the first connecting member 40 is stopped at the step surface of the first mounting hole 11 and is in threaded connection with a part of the inner wall surface of the first mounting hole 11; and/or the second mounting hole 21 is a counter bore, the second connecting piece 50 is a bolt, and the second connecting piece 50 is stopped at the step surface of the second mounting hole 21 and is in threaded connection with part of the inner wall surface of the second mounting hole 21.

Optionally, a plurality of first mounting holes 11 are provided, a plurality of first connecting pieces 40 are provided, and the plurality of first mounting holes 11 and the plurality of first connecting pieces 40 are arranged in a one-to-one correspondence manner; the number of the second mounting holes 21 is plural, the number of the second connectors 50 is plural, and the plurality of second mounting holes 21 and the plurality of second connectors 50 are arranged in a one-to-one correspondence manner. In this way, the connection stability among the first connecting member 40, the elastic deformation body 30 and the second connecting member 50 is effectively improved, and the overall structural stability of the weighing sensor is ensured.

Alternatively, in order to ensure that the upper support 10 and the lower support 20 have sufficient structural strength to effectively withstand the pressure of the vehicle without fatigue damage under the pressure of the vehicle, the thickness of the upper support 10 or the lower support 20 is 40mm or more and 100mm or less.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A load cell, comprising:

The support device comprises an upper support body (10), wherein a first mounting hole (11) is formed in the upper support body (10);

the lower support body (20), a second mounting hole (21) is arranged on the lower support body (20), the lower support body (20) is arranged opposite to the upper support body (10), and a mounting space (100) is formed between the lower support body and the upper support body (10);

the elastic deformation body (30), the elastic deformation body (30) is arranged in the installation space (100), and a strain gauge is pasted on the elastic deformation body (30);

the first connecting piece (40) is fixed at the first mounting hole (11), and a part of the first connecting piece (40) extends into the mounting space (100) and is fixedly connected with the elastic deformation body (30);

The second connecting piece (50) is fixed at the second mounting hole (21), and one part of the second connecting piece (50) extends into the mounting space (100) and is fixedly connected with the elastic deformation body (30).

2. The load cell according to claim 1, further comprising a deformation support ring (60), wherein the deformation support ring (60) is disposed in the mounting space (100) at an outer circumferential side of the elastic deformation body (30), and a first end of the deformation support ring (60) is connected to the upper support body (10), and a second end of the deformation support ring (60) is connected to the lower support body (20).

3. The load cell according to claim 2, wherein said upper support (10) and said lower support (20) are both steel plates, said deformable support ring (60) has a cross section in an axisymmetrical pattern, and said deformable support ring (60) is welded to said upper support (10) and said lower support (20).

4. Weighing cell according to claim 1, characterised in that the elastic deformation body (30) has a stiffness less than the stiffness of the upper support (10).

5. The weighing sensor according to claim 1, wherein the elastic deformation body (30) is an S-shaped rib structure, wherein the elastic deformation body (30) comprises an upper connecting arm (31), a transition arm (32) and a lower connecting arm (33) which are connected in sequence, wherein the first connecting piece (40) is connected with the upper connecting arm (31), and the second connecting piece (50) is connected with the lower connecting arm (33).

6. Weighing cell according to claim 5, characterised in that said elastic deformation body (30) is made of steel plate, said first connector (40) and said second connector (50) are both steel elements, and said first connector (40) and said second connector (50) are both screwed to said elastic deformation body (30).

7. The load cell of claim 1,

the first mounting hole (11) is a counter bore, the first connecting piece (40) is a bolt, and the first connecting piece (40) stops at the step surface of the first mounting hole (11) and is in threaded connection with part of the inner wall surface of the first mounting hole (11); and/or

The second mounting hole (21) is a counter bore, the second connecting piece (50) is a bolt, and the second connecting piece (50) stops at the step surface of the second mounting hole (21) and is in threaded connection with part of the inner wall surface of the second mounting hole (21).

8. the weighing sensor according to claim 7, wherein the first mounting holes (11) are plural, the first connectors (40) are plural, and the plural first mounting holes (11) are provided in one-to-one correspondence with the plural first connectors (40); the number of the second mounting holes (21) is multiple, the number of the second connecting pieces (50) is multiple, and the second mounting holes (21) and the second connecting pieces (50) are arranged in a one-to-one correspondence mode.

9. The load cell according to claim 1, wherein the thickness of said upper support (10) or of said lower support (20) is greater than or equal to 40mm and less than or equal to 100 mm.

10. A dynamic vehicle scale, comprising:

The supporting structure layer is used for being connected with the installation foundation;

The bearing structure layer and the support structure layer are arranged at intervals and are positioned above the support structure layer, and a weighing bearing surface is formed on the surface of one side of the bearing structure layer, which is far away from the support structure layer;

Load cell, the load cell of any one of claims 1 to 9, an upper support (10) of the load cell being fixedly connected to the load-bearing structural layer, and a lower support (20) of the load cell being fixedly connected to the support structural layer.