CN208588461U - Unlimited rigidity weighing platform - Google Patents
Unlimited rigidity weighing platform Download PDFInfo
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- CN208588461U CN208588461U CN201821043090.2U CN201821043090U CN208588461U CN 208588461 U CN208588461 U CN 208588461U CN 201821043090 U CN201821043090 U CN 201821043090U CN 208588461 U CN208588461 U CN 208588461U
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- weighing platform
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- platform
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Abstract
The utility model provides a kind of unlimited rigidity weighing platform, it includes upper weighing platform, lower weighing platform and multiple scale feet, the upper surface of the lower weighing platform is provided with multiple lug bosses, and the upper weighing platform is mounted on the lug boss, so that the relatively described lug boss of the upper weighing platform is free to slide；Multiple sensors are installed, the scale foot is mounted on the bottom of the corresponding sensor, and the lug boss corresponds and coaxial with the scale foot on the bottom surface of the lower weighing platform.The unlimited rigidity weighing platform of the utility model makes sensor deform run-off the straight when will not bear load with weighing platform in the case where not changing scale body height, not increasing whole scale quality, by changing scale structure, to improve the performance of whole scale.Since the rigidity of upper and lower weighing platform is all smaller, it can be effectively saved material, reduce cost.Simultaneously as sensor will not be tilted in load, the contact point between scale foot and sensor is stablized.Therefore, the repeatability of whole scale, return to zero, linearly, lag etc. performances greatly improve.
Description
Technical field
The utility model relates to platform scale, in particular to a kind of unlimited rigidity weighing platform is suitable for passing using strain weighing
The electronic platform scale of sensor.
Background technique
In the prior art, the structure of platform scale is to install strain weighing on four angles of a rectangle steel construction to pass
Sensor (hereinafter referred to as sensor), sensor pass through scale foot again and support on ground, or support to the under(-)chassis of a landing
On.
The scale body of platform scale is all than relatively thin, so rigidity is limited, lower flexure strain, the sensing on quadrangle are easy to produce after load
Device also can run-off the straight therewith, cause the contact point of scale foot and sensor to shift.Platform scale mainly uses bent beam and cuts
Beam strain gauge transducer is cut, this kind of sensor is more sensitive to load(ing) point.Thus, the lower flexure strain of weighing platform will lead to the weight of whole scale
Renaturation, it is linear, a series of deterioration of performance indicators or even exceeded such as return to zero, lag.
Based on the above situation, if it is desired to improving the performance of platform scale, it is necessary to using the weighing platform of big rigidity.Due to marking at present
The height of quasi- platform scale is fixed, and the main method for improving rigidity is exactly to increase the quantity of girder steel.However, this method pair
It is even feasible in the platform scale of small size low capacity, but for the platform scale of large scale large capacity, frequently can lead to cost
A larger increase.Meanwhile the increase of weighing platform tare weight, also to weighing sensor, more stringent requirements are proposed.
In addition, another measure for improving platform scale precision is exactly to improve scale foot.But the structure of this kind of scale foot is more multiple
It is miscellaneous, higher cost, and also the contribution improved to whole scale precision is also limited.
In view of this, those skilled in the art urgently develop the structure of platform improving scale, to solve the above problems.
Utility model content
The technical problems to be solved in the utility model is the sensor in order to overcome the rigidity of platform scale in the prior art limited
It is easy to happen inclination, the defects of stress point is easy to happen offset, provides a kind of unlimited rigidity weighing platform.
The utility model is to solve above-mentioned technical problem by following technical proposals:
A kind of unlimited rigidity weighing platform, it is characterized in that, the unlimited rigidity weighing platform includes upper weighing platform, lower weighing platform and multiple scales
Foot, the upper surface of the lower weighing platform are provided with multiple lug bosses, and the upper weighing platform is mounted on the lug boss, so that on described
The relatively described lug boss of weighing platform is free to slide；
Multiple sensors are installed, the scale foot is mounted on the bottom of the corresponding sensor on the bottom surface of the lower weighing platform
Portion, the lug boss correspond and coaxial with the scale foot.
One embodiment according to the present utility model, the down load born on the lug boss and the sensor to
Upper support force generates the first moment of flexure not on an axis；The scale foot generates second moment of flexure opposite with first moment of flexure, institute
The first moment of flexure is stated mutually to balance with second moment of flexure.
One embodiment according to the present utility model, the top end face of the lug boss are arc surface.
One embodiment according to the present utility model, the bottom surface of the sensor open up fluted, one end of the scale foot
It fixes in the groove.
One embodiment according to the present utility model, the lower weighing platform and the sensor are nested in the upper weighing platform.
One embodiment according to the present utility model, the upper weighing platform include that upper weighing platform table top and multiple upper weighing platforms are reinforced
Muscle, the lower weighing platform include a plurality of horizontal connection strap of lower weighing platform, and the both ends of the lower horizontal connection strap of weighing platform are fixedly connected with sensor
Bottom plate forms frame structure；The horizontal connection strap of lower weighing platform is in the bottom of the upper weighing platform table top, the upper weighing platform reinforcing rib
The corresponding lower horizontal connection strap of weighing platform is covered, and is welded and fixed to the bottom of the upper weighing platform table top；
The upper surface of the sensor base plate is arranged in the lug boss, and the sensor is mounted on the sensor base plate
Bottom, the scale foot is mounted on the bottom of the sensor, and the bottom frame is located at the lower section of the scale foot, described in fixed
Each spacing determined between scale foot.One embodiment according to the present utility model, the lug boss are power transmission salient point, the power transmission
One end of salient point is embedded in the sensor base plate.
One embodiment according to the present utility model is provided with location hole, the upper scale on the lower horizontal connection strap of weighing platform
Platform lower surface is provided with positioning pin, by the location hole and the upper weighing platform positioning pin, so that the horizontal connection strap of lower weighing platform
The limit for carrying out gap with the upper weighing platform table top is connect.
One embodiment according to the present utility model, the bottom of the sensor base plate are welded with side stiffening plate.
The positive effect of the utility model is:
The unlimited rigidity weighing platform of the utility model is not in the case where changing scale body height, not increasing whole scale quality, by changing
Becoming scale structure deforms sensor and run-off the straight when will not bear load with weighing platform, to improve the performance of whole scale.By
It is all smaller in the rigidity of upper and lower weighing platform, it can be effectively saved material, reduce cost.Simultaneously as sensor will not add
It is tilted when load, scale foot contact point is stablized, and impact loading has good buffering effect.Therefore, the repeatability of whole scale, return
Zero, the performances such as linear, lag greatly improve.
Detailed description of the invention
The utility model is above-mentioned and other features, property and advantage will be by with reference to the accompanying drawings and examples
It describes and becomes readily apparent from, identical appended drawing reference always shows identical feature in the accompanying drawings, in which:
Fig. 1 is the structural schematic diagram of the embodiment one of the unlimited rigidity weighing platform of the utility model.
Fig. 2 is the stress diagram in the unlimited rigidity weighing platform of the utility model between sensor and lower weighing platform.
Fig. 3 is the structural schematic diagram of the embodiment two of the unlimited rigidity weighing platform of the utility model.
Fig. 4 is the enlarged drawing of part A in Fig. 3.
Fig. 5 is the schematic diagram of internal structure in the embodiment two of the unlimited rigidity weighing platform of the utility model.
Fig. 6 is the schematic diagram in Fig. 5 along line B-B Cut-away section.
Fig. 7 is that the lower horizontal connection strap of weighing platform is connect with sensor base plate in the embodiment two of the unlimited rigidity weighing platform of the utility model
Structural schematic diagram.
[appended drawing reference]
Upper weighing platform 10
Lower weighing platform 20
Scale foot 30
Lug boss 21
Sensor 22
First moment M 1
Second moment M 2
Groove 221
Sensor base plate 23
Upper weighing platform table top 11
Upper weighing platform reinforcing rib 12
The lower horizontal connection strap 24 of weighing platform
Bottom frame 25
Location hole 241
Upper weighing platform positioning pin 231
Bolt 222 is installed
Side stiffening plate 232
Specific embodiment
It is practical to this below in conjunction with attached drawing for the above objects, features, and advantages of the utility model can be clearer and more comprehensible
Novel specific embodiment elaborates.
The embodiments of the present invention are described with detailed reference to attached drawing now.Now with detailed reference to the excellent of the utility model
Embodiment is selected, its example is shown in the drawings.In the case of any possible, will be come in all the appended drawings using identical label
Indicate the same or similar part.
In addition, although term used in the utility model is selected from public term, this reality
Some terms mentioned in novel specification may be applicant by his or her judgement come selection, and detailed meanings exist
Illustrate in the relevant portion of description herein.
Furthermore, it is desirable that not only by used actual terms, and be also to the meaning contained by each term
To understand the utility model.
Embodiment one:
Fig. 1 is the structural schematic diagram of the embodiment one of the unlimited rigidity weighing platform of the utility model.Fig. 2 is that the utility model is unlimited
Stress diagram in rigidity weighing platform between sensor and lower weighing platform.
As depicted in figs. 1 and 2, the utility model discloses a kind of unlimited rigidity weighing platforms comprising upper weighing platform 10, lower weighing platform
20 and multiple scale feet 30, the upper surface of lower weighing platform 20 is provided with multiple lug bosses 21, upper weighing platform 10 is mounted on lug boss 21,
So that upper 10 opposing projections 21 of weighing platform are free to slide.Multiple sensors 22 are installed on the bottom surface of lower weighing platform 20, by scale foot
30 are mounted on the bottom of accordingly sensor 22, and lug boss 21 corresponds and coaxial with scale foot 30.
It is curved to generate first not on an axis for the upward support force of the down load and sensor 22 that bear on lug boss 21
Square M1, scale foot 30 generate second moment M 2 opposite with the first moment M 1, and the first moment M 1 and the second moment M 2 herein is mutually flat
Weighing apparatus.
Preferably, lug boss 21 is symmetrical along the diametrical direction of lower weighing platform 20.The top end face of lug boss 21 is arc surface.
Fluted 221 are opened up in the bottom surface of sensor 22, one end of scale foot 30 is fixed in groove 221.
According to above structure, the unlimited rigidity weighing platform of the utility model is by the platform for installing sensor and bears weighing load
Platform mutually separates, and using double-layer scale platform, upper weighing platform 10 is solely subjected to weighing load, and lower weighing platform 20 installs sensor 22, upper weighing platform 10
Loading force is transmitted on lower weighing platform 20 again by four lug bosses 21.Herein on four lug bosses 21 and following sensor 22
Scale foot 30 is coaxial, and under the conditions of upper 10 limited lower flexure strain of weighing platform, sensor 22 all will not be with its run-off the straight.
As shown in Fig. 2, from the point of view of the stress of lower weighing platform 20, the downward load born on lug boss 21 with from sensor
22 upward support force can generate first moment M 1 not on an axis.But the first moment M 1 will be come from
It is balanced in the second moment M 2 of scale foot 30.Therefore, the coupling part among lower weighing platform 20 can't bear moment of flexure, that is, play weighing platform
20 do not have lower flexure strain.
First moment M 1 can cause the partial loop variation of lower weighing platform 20, and the second moment M 2 can also cause the curved of sensor 22
Song deformation, two bending deformations herein belong to normal deformation.Due to sensor 22 Calibration test when, sensor
22 be also to be installed on sensor base plate 23, and sensor base plate 23 can also occur bending and deformation under the action of load.
It will of course be noted that the deformation extent of sensor base plate 23 has certain shadow to the hysteretic properties of sensor 22
Ring, therefore the local buckling rigidity by installing Sensor section to lower weighing platform 20 being adjusted, adjustable whole scale it is stagnant
Performance afterwards, this is also another attendant advantages brought by this structure weighing platform.
Four power transmission salient points (i.e. lug boss 21) between upper weighing platform 10 and lower weighing platform 20 should be mounted on lower weighing platform 20,
Because meeting downwarp, causes bump location to shift after upper weighing platform 10 is loaded, and lower weighing platform 20 can guarantee biography almost without deformation
Pass power axis stablize it is constant.
According to above structure, relative to existing platform scale, the rigidity of the upper weighing platform 10 of the unlimited rigidity weighing platform of the utility model
Can be smaller, thus material can be saved.But if upper 10 downwarp of weighing platform is too big, upper weighing platform 10 and lower weighing platform 20
Between spacing just must be big, the height of whole scale can be relatively high.
As described above, unlimited rigidity weighing platform described in the present embodiment can guarantee sensor 22 in the case where weighing platform is loaded not
Run-off the straight, it appears that its whole scale performance is unrelated with the rigidity of weighing platform.Therefore it can be considered as unlimited rigidity.
Embodiment two:
Fig. 3 is the structural schematic diagram of the embodiment two of the unlimited rigidity weighing platform of the utility model.Fig. 4 is that part A is put in Fig. 3
Big figure.Fig. 5 is the schematic diagram of internal structure in the embodiment two of the unlimited rigidity weighing platform of the utility model.Fig. 6 is in Fig. 5 along B-B
The schematic diagram of line Cut-away section.Fig. 7 is the lower horizontal connection strap of weighing platform and biography in the embodiment two of the unlimited rigidity weighing platform of the utility model
The structural schematic diagram of sensor bottom plate connection.
As shown in Fig. 3 to Fig. 7, the structure of the present embodiment is basically the same as the first embodiment, the difference is that: embodiment
A kind of whole height of unlimited rigidity weighing platform can be relatively high, it is difficult to meet the limitation of standardization weighing platform height.And the present embodiment is adopted
Structure is a kind of double platform structure of weighing of nested type, i.e., lower weighing platform 20 and sensor 22 is nested in upper weighing platform 10.Specifically
It says, upper weighing platform 10 includes upper weighing platform table top 11 and multiple upper weighing platform reinforcing ribs 12, and lower weighing platform 20 includes a plurality of lower horizontal connection of weighing platform
Item 24 is fixedly connected with sensor base plate 23 at the both ends of the horizontal connection strap 24 of lower weighing platform, forms frame structure.This structure is pre-
A frame is first formed, guarantees four sensor base plates 23 in the same plane after welding.The lower horizontal connection strap 24 of weighing platform is in
The bottom of upper weighing platform table top 11, upper weighing platform reinforcing rib 12 covers the corresponding horizontal connection strap 24 of lower weighing platform, and supreme scale is welded and fixed
The bottom of platform table top 11.Upper weighing platform reinforcing rib 12 is preferably U-shaped.It is also understood that lower weighing platform lateral connection bar 24 is from upper
It is passed through in the upper weighing platform reinforcing rib 12 at 10 edge of weighing platform, between the two there are gap, this gap is greater than upper 10 full load of weighing platform
Maximum downwarp.The unlimited rigidity weighing platform in an assembling process, group burn-on 10 surrounding of weighing platform upper weighing platform reinforcing rib 12 it
Before, first assembled lower weighing platform 20 can be embedded.
The upper surface of sensor base plate 23 is arranged in lug boss 21, and sensor 22 is mounted on to the bottom of sensor base plate 23
Portion, scale foot 30 are mounted on the bottom of sensor 22, finally, said modules are lifted on bottom frame 25.
The present embodiment protrusions portion 21 can be preferably power transmission salient point, and the power transmission salient point is fixed on sensor base plate.
One end of the power transmission salient point is embedded in sensor base plate 23 alternatively, may be set to be.In the horizontal connection strap 24 of lower weighing platform
On be provided with location hole 241, be provided with weighing platform positioning pin 231 on upper weighing platform table top 11, it is fixed by location hole 241 and upper weighing platform
Position pin 231, so that the limit between the horizontal connection strap 24 of lower weighing platform and upper weighing platform table top 11 with band gap connects.It in this way can be to prevent
Transverse shifting only occurs between the two.The bottom that sensor 22 is fixed to sensor base plate 23 by installing bolt 222.
The bottom of sensor base plate 23 is welded with side stiffening plate 232, can effectively improve its bending stiffness in this way.Simultaneously
It also offers a connection lengths in short transverse and the horizontal connection strap 24 of lower weighing platform, improve the coplanar of sensor base plate 23
Rigidity.
In conclusion the unlimited rigidity weighing platform of the utility model is not changing scale body height, is not increasing the case where whole scale quality
Under, make sensor deform run-off the straight when will not bear load with weighing platform by changing scale structure, to improve whole scale
Performance.Since the rigidity of upper and lower weighing platform is all smaller, it can be effectively saved material, reduce cost.Simultaneously as sensor
It will not be tilted in load, scale foot contact point is stablized.Therefore, the repeatability of whole scale, return to zero, linearly, lag etc. performances mention significantly
It is high.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
These are merely examples, and the protection scope of the utility model is defined by the appended claims.Those skilled in the art
Member can make numerous variations or be repaired to these embodiments under the premise of without departing substantially from the principles of the present invention and essence
Change, but these change and modification each fall within the protection scope of the utility model.
Claims (9)
1. a kind of unlimited rigidity weighing platform, which is characterized in that the unlimited rigidity weighing platform includes upper weighing platform, lower weighing platform and multiple scales
Foot, the upper surface of the lower weighing platform are provided with multiple lug bosses, and the upper weighing platform is mounted on the lug boss, so that on described
The relatively described lug boss of weighing platform is free to slide；
Multiple sensors are installed on the bottom surface of the lower weighing platform, the scale foot is mounted on the bottom of the corresponding sensor,
The lug boss corresponds and coaxial with the scale foot.
2. unlimited rigidity weighing platform as described in claim 1, which is characterized in that the down load born on the lug boss and institute
The upward support force of sensor is stated not on an axis, generates the first moment of flexure；The scale foot generates opposite with first moment of flexure
The second moment of flexure, first moment of flexure mutually balances with second moment of flexure.
3. unlimited rigidity weighing platform as claimed in claim 2, which is characterized in that the top end face of the lug boss is arc surface.
4. unlimited rigidity weighing platform as described in claim 1, which is characterized in that the bottom surface of the sensor opens up fluted, institute
The one end for stating scale foot is fixed in the groove.
5. unlimited rigidity weighing platform as described in claim 1, which is characterized in that the lower weighing platform and the sensor are nested in institute
It states in weighing platform.
6. rigidity weighing platform as claimed in claim 5 unlimited, which is characterized in that the upper weighing platform includes upper weighing platform table top and multiple
Upper weighing platform reinforcing rib, the lower weighing platform include a plurality of horizontal connection strap of lower weighing platform, and the both ends of the lower horizontal connection strap of weighing platform are fixed to be connected
It is connected to sensor base plate, forms frame structure；The horizontal connection strap of lower weighing platform is in the bottom of the upper weighing platform table top, it is described on
Weighing platform reinforcing rib covers the corresponding lower horizontal connection strap of weighing platform, and is welded and fixed to the bottom of the upper weighing platform table top；
The upper surface of the sensor base plate is arranged in the lug boss, and the sensor is mounted on the bottom of the sensor base plate
Portion, the scale foot are mounted on the bottom of the sensor, are provided with bottom frame below the scale foot, described each for fixing
Spacing between scale foot.
7. unlimited rigidity weighing platform as claimed in claim 6, which is characterized in that the lug boss is power transmission salient point, the power transmission
One end of salient point is embedded in the sensor base plate.
8. unlimited rigidity weighing platform as claimed in claim 6, which is characterized in that be provided with positioning on the lower horizontal connection strap of weighing platform
Hole, the upper weighing platform lower surface are provided with positioning pin, by the location hole and the upper weighing platform positioning pin, so that the lower scale
The horizontal connection strap of platform is connect with the limit that the upper weighing platform table top carries out gap.
9. unlimited rigidity weighing platform as claimed in claim 6, which is characterized in that the bottom of the sensor base plate is welded with side and adds
Strong plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821043090.2U CN208588461U (en) | 2018-06-29 | 2018-06-29 | Unlimited rigidity weighing platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821043090.2U CN208588461U (en) | 2018-06-29 | 2018-06-29 | Unlimited rigidity weighing platform |
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| Publication Number | Publication Date |
|---|---|
| CN208588461U true CN208588461U (en) | 2019-03-08 |
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ID=65538816
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821043090.2U Active CN208588461U (en) | 2018-06-29 | 2018-06-29 | Unlimited rigidity weighing platform |
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| Country | Link |
|---|---|
| CN (1) | CN208588461U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657874A (en) * | 2018-06-29 | 2020-01-07 | 梅特勒-托利多(常州)精密仪器有限公司 | Infinite rigidity weighing platform |
-
2018
- 2018-06-29 CN CN201821043090.2U patent/CN208588461U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657874A (en) * | 2018-06-29 | 2020-01-07 | 梅特勒-托利多(常州)精密仪器有限公司 | Infinite rigidity weighing platform |
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