CN213579249U

CN213579249U - Stay cord displacement sensor

Info

Publication number: CN213579249U
Application number: CN202023099420.XU
Authority: CN
Inventors: 乔建锋
Original assignee: Shenzhen Mirant Technology Co ltd
Current assignee: Shenzhen Mirant Technology Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-06-29
Anticipated expiration: 2030-12-21

Abstract

The utility model discloses a stay cord displacement sensor, including line wheel, potentiometre and circuit board, line wheel outer wall is around being equipped with wire rope, wire rope's one end with line wheel fixed connection, be equipped with on the line wheel with line wheel endocentric connecting hole, the pivot of potentiometre with connecting hole fixed connection, the potentiometre with circuit board electric connection, the circuit board is used for exporting the displacement signal. Compared with the prior art, the utility model discloses stable in structure, and compact structure, the effectual whole volume that reduces stay cord displacement sensor makes it can satisfy more application scenes.

Description

Stay cord displacement sensor

Technical Field

The utility model relates to a displacement sensor field especially relates to a stay cord displacement sensor.

Background

The pull rope displacement sensor is also called pull rope displacement sensor, pull rope electronic ruler, etc. and it combines the advantages of angle sensor and linear displacement sensor. The stay rope displacement sensor is mainly used for displacement detection and position detection, and is widely applied to the mechanical automation industry, geological disaster monitoring, building safety detection and other fields.

The range of the existing pull rope displacement sensor is generally short, and the maximum range is not more than 15 meters, so that the application scene of the pull rope displacement sensor is greatly limited; on the other hand, the existing pull rope displacement sensor is generally large in size, complex in structure, not suitable for small and precise equipment, and high in manufacturing cost.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems existing in the prior art, the utility model provides a stay cord displacement sensor to specifically provide following technical scheme:

the utility model provides a stay cord displacement sensor, includes line wheel, potentiometre and circuit board, the line takes turns to the outer wall around being equipped with wire rope, wire rope's one end with line wheel fixed connection, take turns to be equipped with on the line with the concentric connecting hole of line wheel, the pivot of potentiometre with connecting hole fixed connection, the potentiometre with circuit board electric connection, the circuit board is used for exporting displacement signal.

Further, still including being used for changing the variable speed structure of potentiometre rotational speed, variable speed structure includes the driving shaft, the one end of driving shaft with connecting hole fixed connection, the other end is fixed and is equipped with the driving gear, the fixed driven gear that is equipped with in the pivot of potentiometre, the driving gear with driven gear meshes, driven gear's diameter is more than or equal to the diameter of driving gear.

The wire wheel is fixed in the bottom shell; the positioning plate is fixed above the bottom shell through a bolt, a positioning hole is formed in the positioning plate, and a rotating shaft of the potentiometer penetrates through the positioning hole and then is fixedly connected with the driven gear.

The wire wheel is fixed in the bottom shell, a base is fixedly arranged above the bottom shell, one end of the driving shaft penetrates through the base and then is fixedly connected with the connecting hole, the other end of the driving shaft is fixedly provided with the driving gear, and the driving gear is positioned above the base; the positioning plate is fixed above the base through bolts, a positioning hole is formed in the positioning plate, and a rotating shaft of the potentiometer penetrates through the positioning hole and then is fixedly connected with the driven gear.

Furthermore, the base is provided with an installation groove matched with the driving gear and the driven gear in shape.

Further, the lower fixed surface of drain pan is equipped with the base, the base internal fixation is equipped with the clockwork spring structure, the clockwork spring structure includes the spring axle, the spring axle with the connecting hole fixed connection of line wheel.

Further, the diameter of one end of the connecting hole connected with the clockwork spring shaft is 6 millimeters, and the diameter of the other end of the connecting hole is 6.35 millimeters.

Further, the diameter of the driven gear is 1-90 times of the diameter of the driving gear.

Further, the protective cover is fixedly connected with the bottom shell; the safety cover with the drain pan junction is equipped with the water-proof structure that drips, the drain pan with the junction of base is equipped with the water-proof structure that drips.

Further, the displacement signal output by the circuit board comprises one or more of the following signals: pulse signals, voltage signals, current signals, RS485 signals, RS232 signals, and SSI signals.

Compared with the prior art, the utility model has stable and compact structure, effectively reduces the whole volume of the stay cord displacement sensor, and can meet more application scenes; on the other hand, the utility model discloses well speed change structure can make stay cord displacement sensor's range improve by a wide margin, can satisfy the demand of more application scenes.

Drawings

FIG. 1 is an exploded view of embodiment 1 of the present invention;

fig. 2 is a schematic view of the overall structure of embodiment 1 of the present invention;

FIG. 3 is a schematic view of the structure of the center line wheel of the present invention;

fig. 4 is an exploded view of embodiment 2 of the present invention;

fig. 5 is a schematic view of the overall structure of embodiment 2 of the present invention.

Detailed Description

To further illustrate the technical means and technical effects of the present invention, the following describes a preferred embodiment of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

as shown in fig. 1-3, a rope displacement sensor includes a bottom case 1, a base 2 is fixedly disposed below the bottom case 1, a protective cover 3 is fixedly disposed above the bottom case 1, and a glue dripping waterproof structure is disposed at the joint of the bottom case 1, the base 2 and the protective cover 3. The base 2 internal fixation is equipped with the clockwork spring structure, and the clockwork spring structure includes the clockwork spring axle. A wire wheel 4 is arranged in the bottom shell 1, a steel wire rope 5 is wound on the outer wall of the wire wheel 4, one end of the steel wire rope 5 is fixedly connected with the outer wall of the wire wheel 4, and the other end of the steel wire rope 5 extends out of the bottom shell 1; the wire wheel 4 is provided with a connecting hole 41 concentric with the wire wheel 4, and the spring shaft is inserted into the connecting hole 41 and fixedly connected, so that the rotation of the wire wheel 4 can link the spring structure to screw or reset, and the spring structure is used for resetting the steel wire rope 5 on the wire wheel 4. A circuit board 6, a potentiometer 7, a positioning plate 8 and a base 9 are arranged in the protective cover 3, the base 9 is fixed above the bottom case 1 through screws, the positioning plate 8 is fixedly arranged on the base 9, a positioning hole 81 is arranged on the positioning plate 8, and a rotating shaft 71 of the potentiometer 7 penetrates through the positioning hole 81 and the base 9 and then is fixedly connected with a connecting hole 41 on the wire wheel 4, so that the potentiometer 7 is limited on the positioning plate 8, and meanwhile, the wire wheel 4 and the potentiometer 7 synchronously rotate; the circuit board 6 is fixed above the positioning plate 8 through bolts, and the circuit board 6 is electrically connected with the potentiometer 7; the circuit board 6 is electrically connected with a line which penetrates through the protective cover 3 and is used for outputting displacement signals, and different circuit modules of the circuit board 6 are designed to output one or more of the following signals: the signal requirements of most of the existing automation equipment can be met by pulse signals, voltage signals, current signals, RS485 signals, RS232 signals, SSI signals and the like. In order to reduce the vibration generated when the pull rope displacement sensor works, improve the stability of the sensor and prolong the service life of the sensor, the connecting hole 41 of the wire wheel 4 is designed to be in a high-low position, the diameter of one end, connected with a clockwork spring shaft, of the connecting hole 41 is set to be 6 mm, and the diameter of one end, connected with a rotating shaft 71 of a potentiometer 7, of the connecting hole 41 is set to be 6.35 mm.

The working principle is as follows: the stay cord displacement sensor is arranged on the automation equipment and is electrified to work, the steel wire rope 5 is pulled, the steel wire rope 5 drives the wire wheel 4 to rotate, the wire wheel 4 drives the rotating shaft 71 of the potentiometer 7 to rotate, the potentiometer 7 converts displacement information into an electric signal and sends the electric signal to the circuit board 6, and the circuit board 6 converts the electric signal into a signal which can be identified by the automation equipment and sends the signal to the control end of the automation equipment; the tension on the steel wire rope 5 is released, and the steel wire rope 5 automatically resets and winds on the outer wall of the wire wheel 4 under the action of the clockwork spring structure.

Example 2:

as shown in fig. 4-5, on the basis of the structure of the above embodiment 1, the speed changing device further includes a speed changing structure for changing the rotation speed of the potentiometer 7, the speed changing structure includes a driving shaft 10, one end of the driving shaft 10 is inserted into the connecting hole 41 of the reel 4 after passing through the base 9 and fixed, and the other end is fixedly provided with a driving gear 11, the driving gear 11 is located above the base 9; the rotating shaft 71 of the potentiometer 7 penetrates through the positioning hole 81 of the positioning plate 8, the end part of the rotating shaft 71 of the potentiometer 7 is fixedly provided with a driven gear 12, the driving gear 11 is meshed with the driven gear 12, the diameter of the driven gear 12 is 1-90 times of that of the driving gear 11, the positioning plate 8 is fixed above the base 9 through bolts, and the circuit board 6 is fixed above the positioning plate 8 through bolts. This can greatly increase the range of the rope displacement sensor, for example: when the diameter of the driven gear 12 is twice of that of the driving gear 11, the driving gear 11 rotates for one circle, the driven gear 12 drives the rotating shaft 71 of the potentiometer 7 to rotate for only half a circle, so that the measuring range of the pull rope displacement sensor is twice of the original non-speed change structure, and by analogy, the measuring range of the pull rope displacement sensor can be enlarged to 90 times of the original measuring range to the maximum extent, and the maximum measuring range can exceed 100 meters. For the convenience of installation, the base 9 is provided with an installation groove 91 matched with the driving gear 11 and the driven gear 12 in shape. In order to reduce the vibration generated when the stay cord displacement sensor works, improve the stability of the sensor and prolong the service life of the sensor, the connecting hole 41 of the wire wheel 4 is designed to be high and low, the diameter of one end of the connecting hole 41 connected with the spring shaft is set to be 6 mm, and the diameter of one end of the connecting hole 41 connected with the driving shaft 10 is set to be 6.35 mm.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims

1. The utility model provides a stay cord displacement sensor, its characterized in that, includes line wheel, potentiometre and circuit board, line wheel outer wall is around being equipped with wire rope, wire rope's one end with line wheel fixed connection, be equipped with on the line wheel with the concentric connecting hole of line wheel, the pivot of potentiometre with connecting hole fixed connection, the potentiometre with circuit board electric connection, the circuit board is used for exporting displacement signal.

2. The pull-cord displacement sensor according to claim 1, further comprising a speed change mechanism for changing the rotation speed of the potentiometer, wherein the speed change mechanism comprises a driving shaft, one end of the driving shaft is fixedly connected with the connecting hole, the other end of the driving shaft is fixedly provided with a driving gear, a rotating shaft of the potentiometer is fixedly provided with a driven gear, the driving gear is meshed with the driven gear, and the diameter of the driven gear is larger than or equal to that of the driving gear.

3. The pull-cord displacement sensor according to claim 2, further comprising a bottom case and a positioning plate, wherein the reel is fixed in the bottom case;

the positioning plate is fixed above the bottom shell through a bolt, a positioning hole is formed in the positioning plate, and a rotating shaft of the potentiometer penetrates through the positioning hole and then is fixedly connected with the driven gear.

4. The pull rope displacement sensor according to claim 2, further comprising a bottom shell and a positioning plate, wherein the wire wheel is fixed in the bottom shell, a base is fixedly arranged above the bottom shell, one end of the driving shaft penetrates through the base and then is fixedly connected with the connecting hole, the other end of the driving shaft is fixedly provided with the driving gear, and the driving gear is positioned above the base;

the positioning plate is fixed above the base through bolts, a positioning hole is formed in the positioning plate, and a rotating shaft of the potentiometer penetrates through the positioning hole and then is fixedly connected with the driven gear.

5. The pull-cord displacement sensor of claim 4 wherein the base defines mounting slots that are shaped to mate with the drive gear and the driven gear.

6. The rope pulling displacement sensor as claimed in claim 5, wherein a base is fixedly arranged on the lower surface of the bottom shell, a spring structure is fixedly arranged in the base, the spring structure comprises a spring shaft, and the spring shaft is fixedly connected with the connecting hole of the wire wheel.

7. The pull-cord displacement sensor of claim 6, wherein the diameter of the attachment hole at one end connected to the spring shaft is 6 mm and the diameter of the attachment hole at the other end is 6.35 mm.

8. The pull-cord displacement sensor of claim 7 wherein the diameter of the driven gear is 1-90 times the diameter of the drive gear.

9. The pull-cord displacement sensor of claim 8, further comprising a protective cover fixedly attached to the bottom housing;

the safety cover with the drain pan junction is equipped with the water-proof structure that drips, the drain pan with the junction of base is equipped with the water-proof structure that drips.

10. The pull-cord displacement sensor of claim 9, wherein the circuit board outputs displacement signals comprising one or more of the following: pulse signals, voltage signals, current signals, RS485 signals, RS232 signals, and SSI signals.