CN215573471U - Disc type piezoelectric force transducer - Google Patents
Disc type piezoelectric force transducer Download PDFInfo
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- CN215573471U CN215573471U CN202122011901.9U CN202122011901U CN215573471U CN 215573471 U CN215573471 U CN 215573471U CN 202122011901 U CN202122011901 U CN 202122011901U CN 215573471 U CN215573471 U CN 215573471U
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Abstract
The utility model discloses a disc type piezoelectric force transducer, and relates to the technical field of sensors. A disc-type piezoelectric force transducer comprising: the shell is formed by sleeving a first inner hollow column body and a first outer hollow column body; the shell is integrally formed; the side surface of the shell is provided with a wire outlet hole, and the wire outlet hole is connected with a lead connector outside the side surface of the shell; the bottom plates are symmetrically arranged at two end parts of the shell; the bottom plate comprises a first through hole arranged in the middle of the bottom plate, bosses arranged from the first through hole to the periphery at intervals and grooves adjacent to the bosses; the bottom plate is integrally formed; the support body is formed by sleeving a second inner hollow column body and a second outer hollow column body. The utility model provides a disc type piezoelectric force transducer, which has strong rigid connection and high response speed through an assembled structural design, and can measure plane force and pull-down pressure.
Description
Technical Field
The utility model belongs to the technical field of sensors, and particularly relates to a disc type piezoelectric force transducer.
Background
The sensor is a testing device which can sense the tested information and convert the sensed information into electric signals or other information in required forms to output, so as to meet the requirements of information transmission, processing, storage, display, recording, control and the like.
The sensor is generally digital, multifunctional, intelligent, systematized and miniaturized, and is an effective means for realizing automatic control and automatic measurement. The high-frequency force signal acquisition needs to use a force transducer which is divided into a piezoelectric type and a strain type, and the strain type transducer is not suitable for measurement at overhigh temperature because the output signal is weak and the anti-interference capability is poor. The piezoelectric force transducer is restricted by the structure, and the testing precision, the testing range and the like are limited.
SUMMERY OF THE UTILITY MODEL
Aiming at the existing problems, the utility model provides a disc type piezoelectric force transducer, and through the design of an assembled structure, the obtained force transducer has strong rigid connection and high response speed, and can measure force on a plane and pull-down pressure; the ball pin is placed in a through hole of the force sensor to measure the gravity of the ball pin; in the connection relation, in order to enhance the reliability and tightness of the connecting pieces before the connecting pieces are subjected to working load and prevent the pre-applied force caused by gaps or relative sliding between the connecting pieces after the connecting pieces are subjected to the load, the through holes of the load cell can be used for measurement.
The technical scheme adopted by the utility model is as follows:
a disc-type piezoelectric force transducer comprising:
the shell is formed by sleeving a first inner hollow column body and a first outer hollow column body; the shell is integrally formed; the side surface of the shell is provided with a wire outlet hole, and the wire outlet hole is connected with a lead connector outside the side surface of the shell;
the bottom plates are symmetrically arranged at two end parts of the shell; the bottom plate comprises a first through hole arranged in the middle of the bottom plate, bosses arranged from the first through hole to the periphery at intervals and grooves adjacent to the bosses; the bottom plate is integrally formed;
the support body is formed by sleeving a second inner hollow column body and a second outer hollow column body; the second inner hollow cylinder is inserted into the first through hole and welded with the first through hole; the second outer hollow column body is located on the first boss, and an isolation groove is formed between the second outer hollow column body and the inner side face of the second boss; a first cylindrical isolating ring is sleeved on the periphery of the second outer hollow cylinder, and one end of the first cylindrical isolating ring is inserted into the isolating groove; a device group is sleeved on the periphery of the first cylindrical isolating ring and is located on the second boss; the device group comprises a first conductive element, a first sensitive element, a second conductive element and a second sensitive element from bottom to top; the periphery cover of device group is equipped with the second tube-shape spacing ring, a second tube-shape spacing ring tip inserts in the first recess.
Preferably, the bottom plate is fitted to the housing and welded to the housing.
Preferably, the first inner hollow cylinder is welded with the third boss.
Preferably, the bottom plate is fitted to the housing and screwed to the housing.
Preferably, an annular groove is formed in the outer side surface of the second boss, and an annular protrusion matched with the annular groove is formed in the second cylindrical isolating ring; a screw hole is formed in the end face of the bottom end of the first inner hollow column body, and a second through hole is formed in the back face of the third boss; and a bolt penetrates through the second through hole to be connected with the screw hole of the first inner hollow column, so that the shell is assembled with the bottom plate.
Preferably, the height of the first inner hollow column is smaller than the height of the first outer hollow column.
Preferably, the first conductive element and the second conductive element are electrically connected with the charge amplifier and the test instrument.
Has the advantages that: according to the disc type piezoelectric force transducer, through the assembly type structural design, the obtained force transducer has strong rigid connection, is high in response speed and accurate in test, and can measure force on a plane and pull-down pressure; the ball pin is placed in a through hole of the force sensor to measure the gravity of the ball pin; in the connection relation, in order to enhance the reliability and tightness of the connecting pieces before the connecting pieces are subjected to working load and prevent the pre-applied force caused by gaps or relative sliding between the connecting pieces after the connecting pieces are subjected to the load, the through holes of the load cell can be used for measurement.
Drawings
FIG. 1 is a schematic view of an outer shell of an embodiment of a disc-type piezoelectric load cell of the present invention;
FIG. 2 is a schematic view of a base plate of one embodiment of a disc-type piezoelectric load cell of the present invention;
FIG. 3 is a schematic view of a support of an embodiment of a disc-type piezoelectric load cell of the present invention;
FIG. 4 is a schematic cross-sectional view of a disc-type piezoelectric load cell of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof. In the description of the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, a direct connection, or a communication between two elements, and those skilled in the art will understand the specific meaning of the above terms in the present invention specifically.
Examples
A disc-type piezoelectric load cell as shown in figures 1-4, comprising:
the shell 1 is formed by sleeving a first inner hollow column body 11 and a first outer hollow column body 12; the shell 1 is integrally formed; a wire outlet hole (not shown) is formed in the side surface of the shell 1, and the wire outlet hole (not shown) is connected with a lead connector 13 outside the side surface of the shell;
the support body 3 is formed by sleeving a second inner hollow column 31 and a second outer hollow column 32; the second inner hollow cylinder 31 is inserted into the first through hole 21 and welded with the first through hole 21; the second outer hollow cylinder 32 is located on the first boss 23 and forms an isolation groove (not shown) with the inner side surface of the second boss 24; a first cylindrical isolation ring 33 is sleeved on the periphery of the second outer hollow column 32, and one end of the first cylindrical isolation ring 33 is inserted into the isolation groove (not shown); a device group 34 is sleeved on the periphery of the first cylindrical isolating ring 33, and the device group 34 is located on the second boss 24; the device group 34 comprises a first conductive element 341, a first sensing element 342, a second conductive element 343 and a second sensing element 344 from bottom to top; the outer periphery of the device group 34 is sleeved with a second cylindrical isolation ring 35, and one end part of the second cylindrical isolation ring 35 is inserted into the first groove 22.
In this technical scheme, force cell sensor rigidity strong, but big or small production, the bolt is inserted and is carried out fixed mounting to the first through-hole of accessible, the test is accurate, the test range of application is wide, it is convenient to use.
In the above technical solution, the bottom plate 2 is fitted to the housing 1 and welded to the housing 1. By adopting the mode, the rigidity of the force measuring sensor is ensured, the good sealing performance of the force measuring sensor is also ensured, and the method has positive significance for testing the structural stability of the force measuring sensor.
In the above technical solution, the first inner hollow cylinder 11 is welded to the third boss 25. By adopting the mode, the rigidity of the force measuring sensor is ensured, the good sealing performance of the force measuring sensor is also ensured, and the method has positive significance for testing the structural stability of the force measuring sensor.
In the above technical solution, the bottom plate 2 is fitted to the housing 1 and screwed to the housing 1. In this way, the internal structural elements can be disassembled, assembled, replaced and maintained.
In the above technical solution, an annular groove 241 is arranged on the outer side surface of the second boss 24, and an annular protrusion (not shown) matching with the annular groove is arranged inside the second cylindrical isolation ring 35; a screw hole (not shown) is arranged on the end face of the bottom end of the first inner hollow column body 11, and a second through hole (not shown) is arranged on the back face of the third boss 25; bolts are passed through the second through holes (not shown) to be connected with the screw holes of the first inner hollow column 11, and the housing 1 is assembled with the bottom plate 2. By adopting the mode, the sealing performance of the internal structural element is ensured, and convenience is provided for operation and maintenance management of the internal structural element.
In the above technical solution, the height of the first inner hollow column 11 is less than the height of the first outer hollow column 12.
In the above technical solution, the first conductive element 342 and the second conductive element 344 are electrically connected to the charge amplifier and the test instrument.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. The structure and use, methods of application, modifications and variations of the present invention will be apparent to those skilled in the art.
While embodiments of the utility model have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the utility model not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (7)
1. A disc-type piezoelectric force transducer, comprising:
the shell is formed by sleeving a first inner hollow column body and a first outer hollow column body; the shell is integrally formed; the side surface of the shell is provided with a wire outlet hole, and the wire outlet hole is connected with a lead connector outside the side surface of the shell;
the bottom plates are symmetrically arranged at two end parts of the shell; the bottom plate comprises a first through hole arranged in the middle of the bottom plate, bosses arranged from the first through hole to the periphery at intervals and grooves adjacent to the bosses; the bottom plate is integrally formed;
the support body is formed by sleeving a second inner hollow column body and a second outer hollow column body; the second inner hollow cylinder is inserted into the first through hole and welded with the first through hole; the second outer hollow column body is located on the first boss, and an isolation groove is formed between the second outer hollow column body and the inner side face of the second boss; a first cylindrical isolating ring is sleeved on the periphery of the second outer hollow cylinder, and one end of the first cylindrical isolating ring is inserted into the isolating groove; a device group is sleeved on the periphery of the first cylindrical isolating ring and is located on the second boss; the device group comprises a first conductive element, a first sensitive element, a second conductive element and a second sensitive element from bottom to top; the periphery cover of device group is equipped with the second tube-shape spacing ring, a second tube-shape spacing ring tip inserts in the first recess.
2. The disc-type piezoelectric load cell of claim 1, wherein the base plate is fitted with the housing and welded to the housing.
3. The disc-type piezoelectric load cell of claim 2, wherein the first inner hollow cylinder is welded to the third boss.
4. The disc-type piezoelectric load cell of claim 1, wherein the base plate is fitted with the housing and screwed with the housing.
5. The disc-type piezoelectric force transducer of claim 4, wherein the second boss is provided with an annular groove on the outer side surface thereof, and the second cylindrical cage is provided with an annular protrusion therein matching with the annular groove; a screw hole is formed in the end face of the bottom end of the first inner hollow column body, and a second through hole is formed in the back face of the third boss; and a bolt penetrates through the second through hole to be connected with the screw hole of the first inner hollow column, so that the shell is assembled with the bottom plate.
6. The disc-type piezoelectric load cell of any one of claims 1 to 5, wherein the height of the first inner hollow cylinder is less than the height of the first outer hollow cylinder.
7. The disc-type piezoelectric load cell of claim 1, wherein the first conductive element, the second conductive element, the charge amplifier and the test meter are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122011901.9U CN215573471U (en) | 2021-08-25 | 2021-08-25 | Disc type piezoelectric force transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122011901.9U CN215573471U (en) | 2021-08-25 | 2021-08-25 | Disc type piezoelectric force transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215573471U true CN215573471U (en) | 2022-01-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122011901.9U Active CN215573471U (en) | 2021-08-25 | 2021-08-25 | Disc type piezoelectric force transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215573471U (en) |
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2021
- 2021-08-25 CN CN202122011901.9U patent/CN215573471U/en active Active
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