CN220625563U - Double-beam cantilever type tension sensor - Google Patents
Double-beam cantilever type tension sensor Download PDFInfo
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- CN220625563U CN220625563U CN202322139884.6U CN202322139884U CN220625563U CN 220625563 U CN220625563 U CN 220625563U CN 202322139884 U CN202322139884 U CN 202322139884U CN 220625563 U CN220625563 U CN 220625563U
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- tension sensor
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- 230000009977 dual effect Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model provides a double-beam cantilever type tension sensor, comprising: the deformation block is internally provided with a cavity with a transverse cross section, a connecting through hole and a fixing hole, wherein the connecting through hole transversely penetrates through the deformation block, the fixing hole is used for fixing, the connecting through hole is intersected with the cavity and used for fixing a roll shaft, a first beam and a second beam which are constructed in the cavity are respectively positioned on the upper side and the lower side of the connecting through hole, and the cavity is vertically symmetrical along the central axis of the connecting through hole; the strain gauge is attached to the top surface of the deformation block and used for detecting deformation signals of the deformation block and outputting strain electric signals. When the roll shaft fixed in the connecting through hole receives coiled material tension, the deformation block is deformed to a certain extent, and the first beam and the second beam of the cavity are in an up-down symmetrical state, so that the deformation block is fixed on the inner side or the outer side of the fixed plate to form the same deformation signal, so that the strain gauge outputs the same strain electric signal, and the device can be installed and used on the inner side and the outer side in a compatible manner, and has high detection precision and strong consistency.
Description
Technical Field
The utility model belongs to the technical field of sensors, and particularly relates to a double-beam cantilever type tension sensor.
Background
In the industries such as lithium battery industry, printing and packaging industry, sanitary article industry and the like, there is a need for controlling tension of coiled materials such as strips, wires, films and the like in the processing process. The tension sensor is a core component in the tension control system, has the advantages of small occupied space, high integration level and accurate tension measurement, and is an intelligent front edge product in the tension control system.
In the prior art, the strain effect generated by the cantilever type tension sensor is asymmetric, and the cantilever type tension sensor is only suitable for being arranged on one side of a fixed plate, and when the cantilever type tension sensor is arranged on the other side of the fixed plate, the detection precision is poor and the reliability is low.
Therefore, there is a need for a cantilever type tension sensor with high detection accuracy that can be conveniently used by switching between the inner side and the outer side of a fixed plate.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a double-beam cantilever type tension sensor, which is mainly used for solving the defects of poor detection precision and the like when the cantilever type tension sensor is used for switching between the inner side and the outer side in the prior art.
In order to solve the problems, the technical scheme adopted by the utility model is as follows:
the utility model provides a double-beam cantilever type tension sensor, comprising:
the deformation block is internally provided with a cavity with a transverse cross section, a connecting through hole and a fixing hole, wherein the connecting through hole transversely penetrates through the deformation block, the connecting through hole is intersected with the cavity and is used for fixing a roll shaft, a first beam and a second beam which are constructed in the cavity are respectively positioned on the upper side and the lower side of the connecting through hole, and the cavity is vertically symmetrical along the central axis of the connecting through hole;
the strain gauge is attached to the top surface of the deformation block and used for detecting deformation signals of the deformation block and outputting strain electric signals.
In some embodiments, the cavity comprises a joining channel, the joining channel is vertically disposed, the first free end of the first beam and the first connection end thereof abutting the joining channel are both provided with an expansion region having a vertical cross-sectional dimension greater than the inside diameter of the joining channel, and the second free end of the second beam and the second connection end thereof abutting the joining channel are both provided with an expansion region having a vertical cross-sectional dimension greater than the inside diameter of the joining channel.
In some embodiments, the deformation block is further provided with a limiting through hole which transversely penetrates through the deformation block, a limiting bayonet lock is arranged in the limiting through hole, the limiting bayonet lock comprises a first connecting portion and a second connecting portion which are connected, the second connecting portion is tightly attached to the limiting through hole, the outer diameter of the first connecting portion is smaller than that of the limiting through hole, and the limiting through hole is intersected with a connecting channel of the cavity.
In some embodiments, the contact surface of the first connection portion and the second connection portion is located in the engagement channel of the cavity.
In some embodiments, the number of the fixing holes is two, and the fixing holes are respectively located at the upper side and the lower side of the connecting through hole, and the center point of the fixing holes and the center point of the connecting through hole are located on the same straight line.
In some embodiments, the deformation block further includes two limiting holes, the limiting holes intersect the connecting through holes and are used for penetrating limiting bolts to fix the roll shaft in the connecting through holes.
In some embodiments, the strain gauge further comprises a housing, wherein the housing is connected to the outer surface of the deformation block, at least a part of the mounting side surface of the deformation block, which is provided with a fixing hole, is exposed, and the housing is provided with an external connection port which is in signal connection with the strain gauge.
In some embodiments, the deformation block is made of an aluminum alloy material.
Compared with the prior art, the utility model at least comprises the following beneficial effects:
the cavity formed in the deformation block is of a transverse shape and is symmetrical up and down along the central axis of the connecting through hole, when the roll shaft fixed in the connecting through hole receives the tension action of the coiled material, the deformation block is deformed to a certain extent, and the first beam and the second beam of the cavity are in an up-down symmetrical state, so that the deformation block is fixed on the inner side or the outer side of the fixed plate to form the same deformation signal, so that the strain gauge outputs the same strain electric signal, and the device is compatible with the installation and use of the inner side and the outer side, high in detection precision and strong in consistency.
The utility model is described in further detail below with reference to the drawings and the detailed description.
Drawings
The utility model will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the utility model, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.
Fig. 1 is a front view of a dual beam cantilever type tension sensor provided in this embodiment.
Fig. 2 is a partial cross-sectional view of fig. 1 taken along line A-A.
Fig. 3 is a rear view of a dual beam cantilever type tension sensor provided in this embodiment.
Fig. 4 is a schematic diagram of an internal structure of a connection between a strain block and a strain gauge according to this embodiment.
Fig. 5 is a schematic cross-sectional structure of the sensor mounted inside the fixing plate.
Fig. 6 is a schematic cross-sectional structure of the sensor mounted on the outside of the fixing plate.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, when it is described that a specific device is located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When it is described that a particular device is connected to other devices, the particular device may be directly connected to the other devices without intervening devices, or may be directly connected to the other devices without intervening devices.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
The applicant found that:
the traditional cantilever type tension sensor often generates a strain effect with a certain inclination angle when receiving the acting force of a roller shaft, and the strain effect is amplified when applied to a scene of inner and outer switching use, namely, the strain degrees in the use states of the traditional cantilever type tension sensor and the traditional cantilever type tension sensor are different, so that the detection precision deviation is large, and the applicability is poor.
In view of this, in order to solve the above existing problems, referring to fig. 1 to 6, the present embodiment provides a double-beam cantilever type tension sensor, including:
the deformation block 10 is internally provided with a cavity 11 with a transverse cross section, a connecting through hole 12 and a fixing hole 13, wherein the connecting through hole 12 transversely penetrates through the deformation block 10, the fixing hole 13 is a blind hole, the connecting through hole 12 is intersected with the cavity 11 and is used for fixing a roll shaft 30, the fixing hole 13 is used for penetrating a bolt to fix the deformation block 10 to a fixing plate 31, a first beam 14 and a second beam 15 which are constructed in the cavity 11 are respectively positioned on the upper side and the lower side of the connecting through hole 12, and the cavity 11 is vertically symmetrical along the central axis of the connecting through hole 12;
the strain gauge 20 is attached to the top surface of the deformation block 10, and is used for detecting a deformation signal of the deformation block 10 and outputting a strain electric signal.
The deformation block 10 is fixed to the inner side or the outer side of the fixing plate 31 through the fixing hole 13, and then the roll shaft 30 for conveying coiled materials is inserted into the connecting through hole 12, when the tension of the coiled materials changes, the roll shaft 30 tilts in the connecting through hole 12 to different degrees under the action of the tension, so that the deformation block 10 is guided to deform.
Preferably, the left and right dimensions of the connecting through holes 12 are not uniform, and at least a portion of the connecting through holes 12 are in contact with the roller shaft 30, so as to ensure that the stress of the sensing beam does not change differently when the spindle of the tension detecting roller is mounted on the inner side or the outer side of the wallboard, wherein the dimension of the connecting through holes 12 close to the mounting surface is slightly larger for preventing the stress deformation of the interference deformation beam.
Preferably, the strain gage 20 detects the strain of the web by precisely detecting the tension of the web through a Wheatstone full bridge, and converts the deformation signal into a strain electrical signal with different deformation degrees and different magnitudes, thereby detecting the deformation condition.
Referring to fig. 4, in this embodiment, the cavity 11 includes a joining channel 16, the joining channel 16 is vertically disposed, the first beam 14 and the second beam 15 are respectively joined at two ends of the joining channel 16 to form a structure having a transverse "several" section, where the first free end 141 of the first beam 14 and the first connection end 142 of the first beam that is in butt joint with the joining channel 16 are both provided with an expansion area having a vertical section size larger than an inner diameter of the joining channel 16, and the second free end 151 of the second beam 15 and the second connection end 152 of the second beam that is in butt joint with the joining channel 16 are both provided with an expansion area having a vertical section size larger than an inner diameter of the joining channel 16.
An expansion area with larger cross section size is formed at the joint, so that the expansion area is easier to absorb energy due to the structural characteristics of the cavity 11 when tension changes, the whole deformation block 10 is easier to change, and the tension detection fineness is facilitated.
Referring to fig. 4, in this embodiment, the deformation block 10 is further provided with a limiting through hole 21 penetrating through the deformation block 10 transversely, a limiting bayonet lock 22 is disposed in the limiting through hole 21, the limiting bayonet lock 22 includes a first connecting portion 23 and a second connecting portion 24 connected with each other, the second connecting portion 24 is tightly attached to the limiting through hole 21, the outer diameter of the first connecting portion 23 is smaller than that of the limiting through hole 21, and the limiting through hole 21 intersects with the linking channel 16 of the cavity 11.
Preferably, the contact surface of the first connecting portion 23 and the second connecting portion 24 is located in the engagement channel 16 of the cavity 11.
The limiting bayonet 22 plays a role in preventing overload, and since the contact surface of the first connecting portion 23 and the second connecting portion 24 is located in the engagement channel 16 of the cavity 11, and the outer diameter of the second connecting portion 24 is larger than that of the first connecting portion 23, a gap exists between the first connecting portion 23 and the limiting through hole 21, when the deformation block 10 deforms, the first connecting portion 23 can move in the limited gap, but when the deformation block 10 deforms more, the first connecting portion 23 can prop against the wall surface of the limiting through hole 21, so that overload is prevented.
As an embodiment, the number of the fixing holes 13 is two, and the fixing holes are respectively positioned at the upper side and the lower side of the connecting through hole 12, the center point of the fixing holes is positioned on the same straight line with the center point of the connecting through hole 12, and the distances between the center points of the two fixing holes 13 and the center point of the connecting through hole 12 are equal.
Referring to fig. 2, as an embodiment, the deformation block 10 further includes two limiting holes 25, the limiting holes 25 intersect the connecting through holes 12 and are used for penetrating through limiting bolts, the roll shaft 30 is fixed in the connecting through holes 12, and fixing and dismounting of the roll shaft 30 can be achieved by tightening or loosening the limiting bolts in the limiting holes 25.
Referring to fig. 1 to 3, as an embodiment, the strain gauge further includes a housing 26, the housing 26 is connected to the outer surface of the deformation block 10, and at least a part of the mounting side surface of the deformation block 10, which is provided with the fixing hole 13, is exposed, the housing 26 plays a role in protecting, only the mounting side surface of the deformation block 10 is exposed, the deformation block is convenient to directly contact with the fixing plate 31, the housing 26 is provided with an external port 27, the external port 27 is in signal connection with the strain gauge 20, and the external controller can be directly connected with the external port 27 through a connector to collect strain electric signals of the strain gauge 20.
Preferably, the deformation block 10 is made of an aluminum alloy material, which has a lower hardness than the roller shaft 30 and is easily deformed.
In summary, compared with the prior art, the above embodiment provides a double-beam cantilever type tension sensor, in which the cavity 11 constructed in the deformation block 10 is transverse and is vertically symmetrical along the central axis of the connecting through hole 12, when the roll shaft 30 fixed in the connecting through hole 12 receives the tension action of the coiled material, the deformation block 10 is caused to deform to a certain extent, and the first beam 14 and the second beam 15 of the cavity 11 are in a vertically symmetrical state, so that the deformation block 10 is fixed on the inner side or the outer side of the fixed plate 31 to form the same deformation signal, so that the strain gauge 20 outputs the same strain electrical signal, and the strain gauge is compatible with the installation and use of the inner side and the outer side, and has high detection precision and strong consistency.
The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.
Claims (8)
1. A dual beam cantilever type tension sensor, comprising:
the deformation block is internally provided with a cavity with a transverse cross section, a connecting through hole and a fixing hole, wherein the connecting through hole transversely penetrates through the deformation block, the connecting through hole is intersected with the cavity and is used for fixing a roll shaft, a first beam and a second beam which are constructed in the cavity are respectively positioned on the upper side and the lower side of the connecting through hole, and the cavity is vertically symmetrical along the central axis of the connecting through hole;
the strain gauge is attached to the top surface of the deformation block and used for detecting deformation signals of the deformation block and outputting strain electric signals.
2. The dual beam cantilever type tension sensor of claim 1, wherein the cavity comprises a joining channel, the joining channel is vertically disposed, the first free end of the first beam and the first connecting end thereof abutting the joining channel are both provided with an expansion area having a vertical cross-sectional dimension larger than an inner diameter of the joining channel, and the second free end of the second beam and the second connecting end thereof abutting the joining channel are both provided with an expansion area having a vertical cross-sectional dimension larger than an inner diameter of the joining channel.
3. The double-beam cantilever type tension sensor according to claim 2, wherein the deformation block is further provided with a limiting through hole which transversely penetrates through the deformation block, a limiting bayonet lock is arranged in the limiting through hole, the limiting bayonet lock comprises a first connecting portion and a second connecting portion which are connected, the second connecting portion is tightly attached to the limiting through hole, the outer diameter of the first connecting portion is smaller than that of the limiting through hole, and the limiting through hole is intersected with a connecting channel of the cavity.
4. A dual beam cantilever tension sensor as recited in claim 3, wherein the interface of said first and second connection portions is located in the engagement channel of said cavity.
5. The double-beam cantilever type tension sensor according to claim 4, wherein the number of the fixing holes is two, and the fixing holes are respectively positioned at the upper side and the lower side of the connecting through hole, and the center point of the fixing holes and the center point of the connecting through hole are positioned on the same straight line.
6. The dual beam cantilever type tension sensor of claim 5, wherein the deformation block further comprises two limiting holes, wherein the limiting holes are intersected with the connecting through holes and are used for penetrating limiting bolts to fix the roll shaft in the connecting through holes.
7. The dual beam cantilever type tension sensor of claim 6, further comprising a housing, wherein the housing is coupled to an outer surface of the deformation block and at least partially exposes a mounting side of the deformation block having a fixing hole, and wherein the housing has an external port, and wherein the external port is in signal connection with the strain gauge.
8. The dual beam cantilever type tension sensor as recited in any one of claims 1-7, wherein said deformation block is made of aluminum alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322139884.6U CN220625563U (en) | 2023-08-09 | 2023-08-09 | Double-beam cantilever type tension sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322139884.6U CN220625563U (en) | 2023-08-09 | 2023-08-09 | Double-beam cantilever type tension sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220625563U true CN220625563U (en) | 2024-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322139884.6U Active CN220625563U (en) | 2023-08-09 | 2023-08-09 | Double-beam cantilever type tension sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220625563U (en) |
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2023
- 2023-08-09 CN CN202322139884.6U patent/CN220625563U/en active Active
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