CN219798218U - High-precision pull wire sensor - Google Patents
High-precision pull wire sensor Download PDFInfo
- Publication number
- CN219798218U CN219798218U CN202321302693.0U CN202321302693U CN219798218U CN 219798218 U CN219798218 U CN 219798218U CN 202321302693 U CN202321302693 U CN 202321302693U CN 219798218 U CN219798218 U CN 219798218U
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- shell
- transmission shaft
- main transmission
- accommodating cavity
- circuit board
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- 230000005540 biological transmission Effects 0.000 claims abstract description 32
- 238000004804 winding Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 description 7
- 230000004308 accommodation Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The utility model discloses a high-precision pull wire sensor which comprises a shell, a circuit board, a main transmission shaft, a potentiometer, a wire winding wheel, a pull rope and a spring, wherein the shell is arranged on the circuit board; the shell is internally provided with a first accommodating cavity and a second accommodating cavity; the circuit board is arranged in the first accommodating cavity, an interface and a display screen are arranged on the circuit board, and the interface and the display screen are exposed out of the outer surface of the shell; the main transmission shaft can be rotatably arranged in the shell back and forth; the potentiometer is fixed in the first accommodating cavity and is electrically connected with the circuit board, and is provided with a rotating handle which is fixedly connected with the main transmission shaft and is driven by the main transmission shaft to rotate; through being provided with interface and display screen on the circuit board, this interface and display screen all expose in the surface of shell, CAN be in real time through display screen demonstration and through the interface in real time through CAN communication external transmission measured movement quantity value and direction, for user's use brings convenience.
Description
Technical Field
The utility model relates to the technical field of measuring devices, in particular to a high-precision pull-wire sensor.
Background
The traditional stay wire displacement sensor mainly comprises an automatic return spring, a steel rope, a hub, a magnet, a data processing unit and the like, and converts the mechanical displacement into a quantifiable and linear proportional electric signal. When the detected object generates displacement, a steel rope connected with the detected object is pulled, and the steel rope drives the sensor transmission mechanism and the sensor element to synchronously rotate; when the displacement moves reversely, the rotating device inside the sensor automatically withdraws the rope and keeps the tension of the rope unchanged during the stretching and withdrawing process of the rope, so that an electric signal which is proportional to the movement amount of the rope is output.
The existing stay wire displacement sensor has no display function, cannot display measurement values, needs to connect a data processing unit with external display equipment, and is inconvenient to use. Accordingly, there is a need for improvements to current pull-wire displacement sensors.
Disclosure of Invention
In view of the above, the present utility model aims at overcoming the drawbacks of the prior art, and its primary objective is to provide a high-precision pull-wire sensor, which can effectively solve the problem of inconvenient use of the existing pull-wire displacement sensor.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a high-precision pull wire sensor comprises a shell, a circuit board, a main transmission shaft, a potentiometer, a wire winding wheel, a pull rope and a spring; the shell is internally provided with a first accommodating cavity and a second accommodating cavity; the circuit board is arranged in the first accommodating cavity, an interface and a display screen are arranged on the circuit board, and the interface and the display screen are exposed out of the outer surface of the shell; the main transmission shaft can be rotatably arranged in the shell back and forth; the potentiometer is fixed in the first accommodating cavity and is electrically connected with the circuit board, and is provided with a rotating handle which is fixedly connected with the main transmission shaft and is driven by the main transmission shaft to rotate; the wire take-up wheel is fixed on the main transmission shaft and drives the main transmission shaft to rotate back and forth, and the wire take-up wheel is positioned in the second accommodating cavity; one end of the pull rope is fixed with the wire winding wheel and is wound on the wire winding wheel, and the other end of the pull rope is fixed with a hook and extends out of the shell; the spring is arranged in the second accommodating cavity, one end of the spring is fixed with the take-up pulley, and the other end of the spring is fixed with the shell.
Preferably, the shell comprises a center shell, a first end cover and a second end cover, wherein the first end cover and the second end cover are respectively fixed at two ends of the center shell to form the first accommodating cavity and the second accommodating cavity in a surrounding mode, the circuit board is fixed on the inner side face of the first end cover, the display screen is exposed on the outer side face of the first end cover, and the other end of the spring is fixedly connected with the second end cover.
Preferably, the interface is an aviation plug, and the interface is exposed out of the bottom surface of the first end cover.
Preferably, the display screen is a digital tube display screen.
Preferably, the main drive shaft is rotatably mounted in the inner center of the center housing by a bearing.
Preferably, a guide sleeve is arranged between the second end cover and the center shell, and the pull rope penetrates through the guide sleeve to extend outwards.
Preferably, the inner side surface of the second end cover is provided with a rotary piece, and the rotary piece is positioned beside the outer side of the spring.
Preferably, the main transmission shaft is fixedly connected with the rotating handle through a bolt.
Preferably, the take-up pulley is fixedly connected with the main transmission shaft through an M3 jackscrew.
Preferably, the pull rope is a steel wire rope.
Compared with the prior art, the utility model has obvious advantages and beneficial effects, and in particular, the technical scheme can be as follows:
through being provided with interface and display screen on the circuit board, this interface and display screen all expose in the surface of shell, CAN be in real time through display screen demonstration and through the outside transmission measured object's of CAN communication shift quantity value and direction when the interface, for user's use brings convenience.
Drawings
FIG. 1 is a cross-sectional view of a preferred embodiment of the present utility model.
The attached drawings are used for identifying and describing:
10. shell 11, center housing
12. First end cap 13, second end cap
14. Screw 15, guide sleeve
16. Rotating sheet 101, first accommodation chamber
102. Second accommodation cavity 20 and circuit board
21. Interface 22, display screen
30. Main drive shaft 31, bearing
32. Bolt 40 and potentiometer
41. Rotating handle 50, take-up pulley
51. M3 jackscrew 60, stay cord
61. Hook 70, spring
Detailed Description
Referring to fig. 1, a specific structure of a preferred embodiment of the present utility model is shown, which includes a housing 10, a circuit board 20, a main transmission shaft 30, a potentiometer 40, a take-up pulley 50, a pull rope 60 and a spring 70.
The housing 10 has a first accommodation chamber 101 and a second accommodation chamber 102 therein; specifically, the housing 10 includes a central casing 11, a first end cover 12 and a second end cover 13, where the first end cover 12 and the second end cover 13 are respectively fixed at two ends of the central casing 11 to form the first accommodating cavity 101 and the second accommodating cavity 102, and the first end cover 12 and the second end cover 13 are respectively fixedly connected with the central casing 11 through screws 14. And a guide sleeve 15 is provided between the second end cap 13 and the center housing 11.
The circuit board 20 is arranged in the first accommodating cavity 101, an interface 21 and a display screen 22 are arranged on the circuit board 20, the interface 21 and the display screen 22 are exposed out of the outer surface of the shell 10, the display screen 22 is used for displaying the length digital parameters required to be displayed by the sensor, and the minimum accuracy unit is 0.4mm; in this embodiment, the circuit board 20 is fixed on the inner side of the first end cover 12, the interface 21 is an aviation plug, the interface 21 is exposed on the bottom surface of the first end cover 12, the display screen 22 is exposed on the outer side of the first end cover 12, and the display screen 22 is a digital tube display screen.
The main transmission shaft 30 is rotatably disposed in the housing 10; in the present embodiment, the main drive shaft 30 is rotatably mounted at the inner center of the center housing 11 through a bearing 31.
The potentiometer 40 is fixed in the first accommodating cavity 101 and is electrically connected with the circuit board 20, the potentiometer 40 is provided with a rotating handle 41, and the rotating handle 41 is fixedly connected with the main transmission shaft 30 and is driven to rotate by the main transmission shaft 30. In the present embodiment, the main transmission shaft 30 is fixedly connected with the rotating handle 41 through the bolt 32, so that the assembly is convenient; the potentiometer 40 is electrically connected with the circuit board 20 through three wires, the circuit board 20 receives an electrical signal (voltage or resistance) transmitted by the potentiometer 40, the electrical signal is subjected to analog/digital processing by a singlechip on the circuit board 20 to obtain the current rotation number of the potentiometer 40, the signal is analyzed and processed to obtain a numerical value which should be displayed by the digital display screen 22, external power supply and CAN communication are both connected to the outside through the interface 21, and sensor data CAN be transmitted to external equipment through a CAN protocol.
The take-up pulley 50 is fixed on the main transmission shaft 30 and drives the main transmission shaft 30 to rotate back and forth, and the take-up pulley 50 is located in the second accommodating cavity 102; in this embodiment, the take-up pulley 50 is fixedly connected to the main drive shaft 30 by an M3 jackscrew 51.
One end of the pull rope 60 is fixed with the take-up pulley 50 and is wound on the take-up pulley 50, the other end of the pull rope 60 is fixed with a hook 61 and extends out of the shell 10, and the hook 61 is used for being fixed on an external moving part to be measured; in this embodiment, the pull cord 60 extends outwards through the guide sleeve 15 to fix the position of the outlet of the pull cord 60, so as to prevent the pull cord 60 from swinging, and the pull cord 60 is a steel wire rope and is more durable.
The spring 70 is disposed in the second accommodating cavity 102, one end of the spring 70 is fixed with the winding wheel 50, the other end of the spring 70 is fixed with the housing 10, the spring 70 can be tightened when the winding wheel 50 rotates, so that the spring 70 bears mechanical force for storage, when the external moving component is retracted, the winding wheel 50 is driven to rotate by the mechanical force of the spring 70 to retract the pull rope 60, and when the external moving component pulls the pull rope 60, the winding wheel 50 can be driven to reversely rotate. In this embodiment, the other end of the spring 70 is fixedly connected with the second end cover 13, and the inner side surface of the second end cover 13 is provided with a rotary piece 16, and the rotary piece 16 is located beside the outer side of the spring 70, so as to reduce the friction between the spring 70 and the second end cover 13, and details the working principle of this embodiment as follows:
first, the hook 61 is fixed on the measured moving object, when the measured object is far away from the sensor, the pull rope 60 is driven to be far away, so that the take-up pulley 50 rotates anticlockwise, and the rotating handle 41 of the potentiometer 40 is driven to rotate anticlockwise. If the measured object moves in the direction approaching the sensor, the take-up wheel 50 rotates clockwise under the action of the internal spring 70, so that the rotating handle 41 of the potentiometer 40 is driven to rotate clockwise.
The singlechip in the circuit board 20 acquires the analog quantity and the digital quantity of the potentiometer 40 to obtain the moving quantity value of the potentiometer 40, then obtains the moving quantity of the measured object through the processing of the internal processor, and displays the moving quantity value and the moving direction of the measured object in real time through the display screen 22 on the circuit board 20 and the CAN communication in real time through the interface 21.
The design key points of the utility model are as follows: through being provided with interface and display screen on the circuit board, this interface and display screen all expose in the surface of shell, CAN be in real time through display screen demonstration and through the outside transmission measured object's of CAN communication shift quantity value and direction when the interface, for user's use brings convenience.
The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (10)
1. A high-precision pull wire sensor is characterized in that: comprises a shell, a circuit board, a main transmission shaft, a potentiometer, a wire winding wheel, a pull rope and a spring; the shell is internally provided with a first accommodating cavity and a second accommodating cavity; the circuit board is arranged in the first accommodating cavity, an interface and a display screen are arranged on the circuit board, and the interface and the display screen are exposed out of the outer surface of the shell; the main transmission shaft can be rotatably arranged in the shell back and forth; the potentiometer is fixed in the first accommodating cavity and is electrically connected with the circuit board, and is provided with a rotating handle which is fixedly connected with the main transmission shaft and is driven by the main transmission shaft to rotate; the wire take-up wheel is fixed on the main transmission shaft and drives the main transmission shaft to rotate back and forth, and the wire take-up wheel is positioned in the second accommodating cavity; one end of the pull rope is fixed with the wire winding wheel and is wound on the wire winding wheel, and the other end of the pull rope is fixed with a hook and extends out of the shell; the spring is arranged in the second accommodating cavity, one end of the spring is fixed with the take-up pulley, and the other end of the spring is fixed with the shell.
2. A high precision pull-wire sensor as claimed in claim 1, wherein: the shell comprises a center shell body, a first end cover and a second end cover, wherein the first end cover and the second end cover are respectively fixed at two ends of the center shell body to form the first accommodating cavity and the second accommodating cavity in a surrounding mode, the circuit board is fixed on the inner side face of the first end cover, the display screen is exposed on the outer side face of the first end cover, and the other end of the spring is fixedly connected with the second end cover.
3. A high precision pull-wire sensor as claimed in claim 2, wherein: the interface is an aviation plug, and the interface is exposed out of the bottom surface of the first end cover.
4. A high precision pull-wire sensor as claimed in claim 2, wherein: the display screen is a digital tube display screen.
5. A high precision pull-wire sensor as claimed in claim 2, wherein: the main transmission shaft is rotatably installed at the inner center of the center housing through a bearing.
6. A high precision pull-wire sensor as claimed in claim 2, wherein: a guide sleeve is arranged between the second end cover and the center shell, and the pull rope penetrates through the guide sleeve and extends outwards.
7. A high precision pull-wire sensor as claimed in claim 2, wherein: the inner side surface of the second end cover is provided with a rotary piece, and the rotary piece is positioned beside the outer side of the spring.
8. A high precision pull-wire sensor as claimed in claim 1, wherein: the main transmission shaft is fixedly connected with the rotating handle through a bolt.
9. A high precision pull-wire sensor as claimed in claim 1, wherein: and the wire winding wheel is fixedly connected with the main transmission shaft through an M3 jackscrew.
10. A high precision pull-wire sensor as claimed in claim 1, wherein: the pull rope is a steel wire rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321302693.0U CN219798218U (en) | 2023-05-26 | 2023-05-26 | High-precision pull wire sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321302693.0U CN219798218U (en) | 2023-05-26 | 2023-05-26 | High-precision pull wire sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219798218U true CN219798218U (en) | 2023-10-03 |
Family
ID=88185249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321302693.0U Active CN219798218U (en) | 2023-05-26 | 2023-05-26 | High-precision pull wire sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219798218U (en) |
-
2023
- 2023-05-26 CN CN202321302693.0U patent/CN219798218U/en active Active
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