CN215003502U - Linear displacement sensor - Google Patents
Linear displacement sensor Download PDFInfo
- Publication number
- CN215003502U CN215003502U CN202121299017.3U CN202121299017U CN215003502U CN 215003502 U CN215003502 U CN 215003502U CN 202121299017 U CN202121299017 U CN 202121299017U CN 215003502 U CN215003502 U CN 215003502U
- Authority
- CN
- China
- Prior art keywords
- displacement sensor
- linear displacement
- main body
- winding wheel
- encoder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model provides a linear displacement sensor, this linear displacement sensor includes: the spring type spring winding machine comprises a shell, wherein a reserved slotted hole is formed in the shell, and a coil spring is arranged in the reserved slotted hole; the main body is arranged on the shell, an installation section is arranged in the main body, and an outlet cap is arranged outside the main body; the winding wheel is arranged in the installation section, one end of the winding wheel is arranged at the center of the coil spring, a bearing is arranged between the winding wheel and the main body and positioned at one side of the coil spring, and an installation hole is formed in the center of the winding wheel; the steel belt is wound on the wire winding wheel, and the free end of the steel belt penetrates out of the wire outlet cap to be fixedly connected with the pull head; the encoder is arranged on one side of the main body, which is far away from the shell, and a main shaft of the encoder penetrates through the mounting hole to be fixed with the wire winding wheel; the gland is sleeved outside the encoder and fixedly connected with the main body. The winding volume of the winding wheel can be reduced, the sealing performance of the linear displacement sensor is improved, the service life of the linear displacement sensor is prolonged, and the maintenance time of the linear displacement sensor is prolonged.
Description
Technical Field
The utility model relates to a measuring instrument technical field especially relates to a linear displacement sensor.
Background
The displacement sensor is also called a linear sensor, and is an induction device and used for converting measured physical quantity into electric quantity, and the displacement sensor can be divided into a linear displacement sensor and an angle displacement sensor according to a motion mode, and respectively converts the distance of linear displacement and the angle of circumferential displacement into electric signals. The linear displacement sensor can be divided into an inductance type, a resistance type, a grating type, a magnetic type, a pull wire type and the like according to a displacement measurement mode, wherein compared with other modes, the pull wire type linear displacement sensor has the advantages of simple mechanism, small equipment occupied space, long measurement stroke, good reliability, convenience in maintenance and the like, and is widely applied to various linear measurement fields.
The stay wire encoder is a combined device of the stay wire box and the encoder, wherein the stay wire box is mainly an assembly of a stretchable stainless steel cable wound on a wire winding wheel provided with a bearing, the wire winding wheel is connected with the encoder, the encoder can be an incremental encoder or an absolute value encoder, and the stay wire encoder is widely applied to the fields of a linear guide rail system, a hydraulic cylinder system, a testing machine, a telescopic system (a forklift, a press, a lifter, a pipe bender, a bending machine and the like), a crane or a cable winch and the like.
As shown in fig. 1, the present stay wire encoder mainly comprises a rotary encoder 3 ', a wire winding wheel 2 ' and a coil spring 1 ', wherein the three parts are respectively arranged in three cavities of the stay wire encoder, the three parts are fixedly connected with each other through a main shaft of the encoder, along with the increase of the range of the stay wire encoder, the volumes of the wire winding wheel and the coil spring are increased, namely, the steel wire rope of the present conventional stay wire encoder is sequentially wound and arranged on the surface of a cylinder with the same outer diameter, the longer the range is, the longer the cylindrical surface of the wire winding wheel is, the larger the volume of the stay wire encoder is, the weight of the whole product is increased, the difficulty in assembling and adjusting the product is increased, and the application range of the product is limited.
Therefore, there is a need to develop a linear displacement sensor, which can reduce the winding volume of the winding wheel, improve the sealing performance of the linear displacement sensor, and further improve the service life of the linear displacement sensor and prolong the maintenance time of the linear displacement sensor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art or the correlation technique.
Therefore, the utility model provides a linear displacement sensor.
In view of this, the utility model provides a linear displacement sensor, linear displacement sensor includes:
the spring type spring winding device comprises a shell, wherein a reserved slotted hole is formed in the shell, and a coil spring is arranged in the reserved slotted hole;
the main body is arranged on the shell, an installation area is arranged in the main body, and a wire outlet cap is arranged outside the main body;
the winding wheel is arranged in the installation interval, one end of the winding wheel is arranged at the center of the coil spring, a bearing is arranged between the winding wheel and the main body and positioned at one side of the coil spring, and an installation hole is formed in the center of the winding wheel;
the steel belt is wound on the wire winding wheel, and the free end of the steel belt penetrates out of the wire outlet cap to be fixedly connected with the pull head;
the encoder is arranged on one side of the main body, which is far away from the shell, and a main shaft of the encoder penetrates through the mounting hole to be fixed with the wire winding wheel;
the pressing cover is sleeved on the encoder and fixedly connected with the main body.
Further, the linear displacement sensor further includes:
the outlet sealing sleeve is arranged in the outlet cap and is close to the main body;
the pair of brushes is arranged in the wire outlet cap and staggered up and down, and the brush heads of the pair of brushes face the steel belt.
Further, a cushion pad is arranged between the outgoing line cap and the slider.
Further, the linear displacement sensor further includes:
the flange, set up in the gland with between the main part, the encoder with flange fixed connection.
Further, between the casing and the main part, between the main part and the flange, all be equipped with sealed the pad between the flange and the gland.
Further, the linear displacement sensor further includes:
the socket is arranged on one side, far away from the main body, of the gland, and the axis of the socket coincides with the axis of the main shaft.
Furthermore, the adjacent surface between the wire winding wheel and the main body and the adjacent surface between the wire winding wheel and the flange are processed into a curved sealing structure.
Further, the width of the steel strip is 6mm to 12mm, and the thickness of the steel strip is less than 0.1 mm.
The utility model provides a technical scheme can include following beneficial effect:
the original steel wire rope is replaced by a steel belt, the steel belt is convenient to fold, the length is measured in the same way, and the size of the steel belt after being folded is smaller than that of the steel wire rope after being wound, so that the size of the linear displacement sensor is smaller; the setting of steel band is convenient for seal, seals through the outlet seal cover, improves linear displacement sensor's protection level, and through the setting of brush, can also prevent effectively that external dust and foreign matter etc. from returning inside getting into linear displacement sensor along with the steel band of pulling out, greatly prolonged linear displacement sensor's life and application environment scope.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 shows a schematic front view of a prior art gas cylinder cluster grid pull encoder for easy centralized use according to one embodiment of the present invention;
fig. 2 shows a partial cross-sectional view of a linear displacement sensor according to an embodiment of the present invention;
figure 3a shows a schematic internal split view of an outlet cap according to an embodiment of the present invention;
figure 3b shows a schematic combination diagram of an outlet cap according to an embodiment of the present invention;
fig. 4 shows an external schematic view of a linear displacement sensor according to the present invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:
the device comprises a shell 1, a coil spring 2, a body 3, a sealing gasket 4, a flange 5, an encoder 6, a gland 7, a socket 8, a bearing 9, a wire winding wheel 10, a steel belt 11, a wire outlet cap 12, a wire outlet sealing sleeve 13, a hairbrush 14, a buffer cushion 15, a puller 16 and a spindle 17.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Examples
Fig. 2 shows a partial cross-sectional view of a linear displacement sensor according to an embodiment of the present invention; fig. 4 shows an external schematic view of a linear displacement sensor according to the present invention.
As shown in fig. 2 and 4, the present embodiment provides a linear displacement sensor including:
the device comprises a shell 1, wherein a reserved slotted hole is formed in the shell 1, and a coil spring 2 is arranged in the reserved slotted hole;
the main body 3 is arranged on the shell 1, an installation section is arranged in the main body 3, and an outgoing line cap 12 is arranged outside the main body 3;
the winding wheel 10 is arranged in the installation interval, one end of the winding wheel 10 is arranged at the center of the coil spring 2, a bearing 9 is arranged between the winding wheel 10 and the main body 3, the bearing 9 is positioned at one side of the coil spring 2, and the center of the winding wheel 10 is provided with an installation hole;
the steel belt 11 is wound on the winding wheel 10, and the free end of the steel belt 11 penetrates out of the wire outlet cap 12 to be fixedly connected with the pull head 16;
the encoder 6 is arranged on one side of the main body 3 far away from the shell 1, and a main shaft 17 of the encoder 6 penetrates through the mounting hole to be fixed with the wire winding wheel 10;
the gland 7 is sleeved on the encoder 6, and the gland 7 is fixedly connected with the main body 3.
The original steel wire rope is replaced by the steel belt 11, the steel belt 11 is convenient to fold, the size of the steel belt 11 after being folded is smaller than that of the steel wire rope after being wound, and therefore the size of the linear displacement sensor is smaller.
Wherein the width of the steel strip 11 is 6mm to 12mm, and the thickness of the steel strip 11 is less than 0.1 mm.
Because wire rope must all twine in the wire winding wheel outside of an equal diameter, can not fold and roll, otherwise can take place the chaotic and irregular phenomenon of kinking, and steel band 11 is because extremely thin and have certain width, so can fold and roll extremely long steel band 11 in reaching little space, and then same measurement length, the size after steel band 11 folds is less than the size after the wire rope winding, and then makes linear displacement sensor's volume littleer.
Specifically, in a natural state, the steel belt 11 is completely wound inside the linear displacement sensor, all the steel belt 11 is wound on the coiler 10, and the steel belt 11 is pulled out when the pull head 16 is stressed, the coiler 10 rotates along with the extension of the steel belt 11, the main shaft 17 of the encoder 6 and the coiler 10 rotate synchronously, so that the encoder 6 generates numerical value change, the steel belt 11 is pulled out to drive the coiler 10 to rotate, the coiler 10 rotates to drive the main shaft 17 of the encoder 6 to rotate together, the main shaft 17 of the encoder 6 rotates to generate signal record and feed back the signal record to an external display, the encoder records pulse number, a circle of 360 degrees corresponds to N pulse numbers, each pulse number corresponds to 360/N degrees, the revolution number can be calculated according to the recorded pulse number, and then the measured distance can be obtained, wherein the coil spring 2 can provide reverse tension, the steel belt 11 is ensured to be in a stretched state when being pulled out by external force.
It should be noted that, the bearing 6 is arranged between the wire winding wheel 10 and the main body 3, and the bearing is also arranged at one end of the encoder 6 of the main shaft 17, so that the end points at the two sides of the main shaft 17 are accurately placed through the arrangement of the bearings at the two ends, the main shaft 17 is more stable to operate, the poor effect that the main shaft is eccentric due to the single end bearing is avoided, the precision of the linear displacement sensor is increased, and the overall stability of the linear displacement sensor during operation is improved.
Furthermore, the wire outlet of the steel wire rope has long-term relative motion, the diameter of the steel wire rope is small, the steel wire rope is extremely difficult to seal, and the steel strip 11 is a metal strip with certain width and extremely thin thickness, so that the wire outlet allows larger wire outlet width, the sealing difficulty of the wire outlet is greatly reduced, and the stability of the linear displacement sensor can be improved.
When the encoder is installed, the main shaft 17 of the encoder 6 is fixedly connected with the wire winding wheel 10 through a screw, and then one end of the assembled wire winding wheel 10 is inserted into the center of the coil spring 2 and linked with the inner hook of the coil spring 2.
Fig. 3 shows a schematic view inside an enclosure according to an embodiment of the invention;
as shown in fig. 3, the linear displacement sensor further includes:
the outlet sealing sleeve 13 is arranged in the outlet cap 12, and the outlet sealing sleeve 13 is arranged close to the main body 3;
the pair of hairbrushes 14 are arranged in the wire outlet cap 12, the pair of hairbrushes 14 are arranged in a vertically staggered mode, and the brush heads of the pair of hairbrushes 14 face the steel belt 11.
The setting of steel band 11 is convenient for seal, seals through outlet seal cover 13, improves linear displacement sensor's protection level, and through the setting of brush 14, can also prevent effectively that external dust and foreign matter etc. from returning along with the steel band 11 of pulling out and getting into linear displacement sensor inside, greatly prolonged linear displacement sensor's life and application environment scope.
It should be noted that the outlet cap 12 includes two half cap bodies, and a groove and a receiving chamber are provided inside the half cap bodies, so that the brush 14, the outlet gland 13 and the outlet cap 12 can be conveniently assembled.
Further, a cushion 15 is provided between the outlet cap 12 and the slider 16.
The buffer pad 15 is injection molding, and wraps up the pull head 16 and the steel band 11 inside simultaneously during injection molding, so that the assembly and adjustment difficulty of the linear displacement sensor is reduced, and the use stability of the linear displacement sensor is improved, wherein the pull head 16 is driven by external force during pulling out, the pull head 16 and the buffer pad 15 and the steel band 11 which are integrally processed are pulled out synchronously along with the external force, and the fixed connection steps of the pull head 16, the buffer pad 15 and the steel band 11 are reduced during assembly and adjustment, so that the assembly and adjustment difficulty is reduced.
Further, the linear displacement sensor further includes:
and the flange 5 is arranged between the gland 7 and the main body 3, and the encoder 6 is fixedly connected with the flange 5.
Wherein, the encoder 6 during operation, main part 3 is static relatively, the rotation of main shaft 17, record information acquires the revolution from this, and then acquire the measuring distance, during the assembly, encoder 6 passes through the fix with screw to flange 5, the during operation keeps static, the main shaft 17 of encoder 6 passes through the screw to be connected with kinking wheel 10 fixedly, during operation external force drives pull head 16, steel band 11 removes, steel band 11 drives kinking wheel 10 and rotates, kinking wheel 10 drives the main shaft 17 rotation of encoder 6, improve the stability of linear displacement sensor work, and then improve linear displacement sensor's measurement accuracy.
Further, sealing gaskets 4 are arranged between the shell 1 and the main body 3, between the main body 3 and the flange 5, and between the flange 5 and the gland 7.
It should be noted that, the housing 1, the main body 3, the flange 5 and the gland 7 are connected in sequence and fixed by screws, the sealing gasket 4 is assembled between the contact surfaces of the housing 1, the main body 3, the flange 5 and the gland 7, so as to improve the sealing performance among all parts, on one hand, dust or foreign matters can be prevented from entering the linear displacement sensor, which affects the measurement accuracy and the service life of the linear displacement sensor, on the other hand, the protection grade is improved, and the application range of the linear displacement sensor is increased.
Further, the linear displacement sensor further includes:
and the socket 8 is arranged on one side of the gland 7 far away from the main body 3, and the axis of the socket 8 is overlapped with the axis of the main shaft 17.
The socket 8 is used to connect the encoder 6 with an external circuit, and is capable of supplying power to the encoder 6 and transmitting the counting result of the encoder 6 to an external display device.
Furthermore, the adjacent surface between the winding wheel 10 and the main body 3 and the adjacent surface between the winding wheel 10 and the flange 5 are processed into a curved sealing structure.
Wherein, crooked way seal structure is adjacent but regular unsmooth ring is processed into in contactless part cooperation, forms the air gap of similar a plurality of S types after the assembly, specifically, crooked way seal structure 'S setting makes linear displacement sensor produce an atmospheric pressure isolation region at the during operation, has increased the barrier propterty between the internal cavity, can not lead to the resistance too big because of the contact seal simultaneously again, very big increase linear displacement sensor' S protection level and life.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
Claims (8)
1. A linear displacement sensor, characterized in that it comprises:
the spring type spring winding device comprises a shell, wherein a reserved slotted hole is formed in the shell, and a coil spring is arranged in the reserved slotted hole;
the main body is arranged on the shell, an installation area is arranged in the main body, and a wire outlet cap is arranged outside the main body;
the winding wheel is arranged in the installation interval, one end of the winding wheel is arranged at the center of the coil spring, a bearing is arranged between the winding wheel and the main body and positioned at one side of the coil spring, and an installation hole is formed in the center of the winding wheel;
the steel belt is wound on the wire winding wheel, and the free end of the steel belt penetrates out of the wire outlet cap to be fixedly connected with the pull head;
the encoder is arranged on one side of the main body, which is far away from the shell, and a main shaft of the encoder penetrates through the mounting hole to be fixed with the wire winding wheel;
the pressing cover is sleeved on the encoder and fixedly connected with the main body.
2. The linear displacement sensor of claim 1, further comprising:
the outlet sealing sleeve is arranged in the outlet cap and is close to the main body;
the pair of brushes is arranged in the wire outlet cap and staggered up and down, and the brush heads of the pair of brushes face the steel belt.
3. The linear displacement sensor of claim 2 wherein a cushion is provided between the outlet wire cap and the pull head.
4. The linear displacement sensor of claim 1, further comprising:
the flange, set up in the gland with between the main part, the encoder with flange fixed connection.
5. The linear displacement sensor of claim 4 wherein a gasket is disposed between the housing and the body, between the body and the flange, and between the flange and the gland.
6. The linear displacement sensor of claim 1, further comprising:
the socket is arranged on one side, far away from the main body, of the gland, and the axis of the socket coincides with the axis of the main shaft.
7. The linear displacement sensor of claim 4 or 5, wherein the adjacent surface between the coiler and the main body and the adjacent surface between the coiler and the flange are processed into a curved sealing structure.
8. The linear displacement sensor of any one of claims 1 to 6, wherein the steel strip has a width of 6mm to 12mm and a thickness of less than 0.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121299017.3U CN215003502U (en) | 2021-06-10 | 2021-06-10 | Linear displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121299017.3U CN215003502U (en) | 2021-06-10 | 2021-06-10 | Linear displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215003502U true CN215003502U (en) | 2021-12-03 |
Family
ID=79130953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121299017.3U Active CN215003502U (en) | 2021-06-10 | 2021-06-10 | Linear displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215003502U (en) |
-
2021
- 2021-06-10 CN CN202121299017.3U patent/CN215003502U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201772856U (en) | Pull wire type linear displacement sensor | |
| CN215003502U (en) | Linear displacement sensor | |
| CN106404381B (en) | A kind of check valve line pressure shift test device | |
| CN110806512B (en) | Insulator surface charge measuring device | |
| CN219576805U (en) | Servo motor encoder | |
| CN216589374U (en) | External rigid displacement sensor of hydraulic hoist | |
| CN108757465B (en) | Compression cavity dynamic pressure measuring device of rotary vane type automobile air conditioner compressor | |
| CN215676938U (en) | Stay wire encoder | |
| CN215491511U (en) | Stay wire displacement sensor for surface displacement monitoring | |
| CN215374011U (en) | Stay-supported displacement encoder | |
| CN215676846U (en) | Linear displacement sensor with inclination angle feedback | |
| CN113470969B (en) | Coil winding device of three-dimensional wound core distribution transformer | |
| CN213455399U (en) | Multifunctional displacement sensor | |
| CN211783287U (en) | Linear displacement sensor | |
| CN220339301U (en) | Novel stay cord displacement sensor | |
| CN220818869U (en) | Novel ultrathin stay wire displacement sensor | |
| CN217585644U (en) | Universal stay wire encoder | |
| CN215810652U (en) | Stay cord displacement sensor | |
| CN218603306U (en) | Novel servo electric cylinder | |
| CN213714640U (en) | Sealing detection device for boiler pipeline port | |
| CN217930158U (en) | Novel high-precision pull wire displacement sensor | |
| CN220454525U (en) | Detection assembly for detecting deformation of oil and gas pipeline | |
| CN217032340U (en) | Stay cord long angle sensor | |
| CN219798218U (en) | High-precision pull wire sensor | |
| CN213632445U (en) | Anti-corrosion thermocouple |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |