CN213631959U

CN213631959U - Conveniently-installed magnetostrictive displacement sensor with push-pull rod

Info

Publication number: CN213631959U
Application number: CN202022894395.8U
Authority: CN
Inventors: 杨俊营
Original assignee: Beijing Tebeifu Electronic Technology Co ltd
Current assignee: Beijing Tebeifu Electronic Technology Co ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-07-06
Anticipated expiration: 2030-12-04

Abstract

The utility model discloses a take push-and-pull rod formula magnetostrictive displacement sensor convenient to installation, take push-and-pull rod formula magnetostrictive displacement sensor convenient to installation to include cavity pipy section bar shell, pull rod assembly, magnetic ring and sensing element subassembly, the scalable position in of right-hand member of pull rod assembly in the section bar shell, the magnetic ring links to each other with pull rod assembly's right-hand member, the left end of sensing element subassembly stretches into and is located in the right-hand member of the pull rod assembly in the section bar shell. The structure part of the utility model can be parameterized according to the requirements of customers; the structure is relatively simple, the aluminum alloy section bar provides flexible installation configuration, and the installation is convenient. The position measurement is completely non-contact, so that the service life is effectively prolonged; the insulating assembly and the shielding assembly inside the aluminum alloy section bar play roles in protecting the internal electric device from being damaged due to static electricity and inhibiting the interference of external signals to the inside of the internal electric device to a certain extent.

Description

Conveniently-installed magnetostrictive displacement sensor with push-pull rod

Technical Field

The utility model relates to a magnetostrictive displacement sensor technical field, concretely relates to take push-and-pull rod formula magnetostrictive displacement sensor who is convenient for install.

Background

The magnetostrictive displacement sensor plays a very important role in engineering machinery. The magnetostrictive displacement sensors are internally and externally arranged according to the installation mode, and most of the externally arranged sensors are fixed together by means of hoops, clamps and equipment. The existing sensor is complex to install, most hoops and clamps are nonstandard parts, and the processing cost is high. And the sensor magnetic ring (magnetic core part) is outside the sensor, the magnetic ring can be influenced by the external environment. To above-mentioned condition current sensor just hardly satisfy its installation requirement, to this kind of condition utility model a take push rod formula magnetostrictive displacement sensor who is convenient for install.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a take push-pull rod formula magnetostrictive displacement sensor who is convenient for install to because the sensor magnetic ring exposes the problem that receives the influence outside among the solution prior art.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a take magnetostrictive displacement sensor of push-pull rod formula installation of being convenient for, take magnetostrictive displacement sensor of push-pull rod formula installation of being convenient for to include hollow tubulose section bar shell, pull rod assembly, magnetic ring and sensing element subassembly, pull rod assembly's right-hand member is scalable and be located in the section bar shell, the magnetic ring links to each other with pull rod assembly's right-hand member, sensing element assembly's left end stretches into and is located in the right-hand member of the pull rod assembly in the section bar shell, in order when pull rod assembly removes along the section bar shell sensing element assembly responds to the relative position of magnetic ring changes.

Furthermore, the pull rod assembly comprises a first fish eye ball head bearing, a pull rod plug, a head cap and a pull rod, the pull rod is hollow and tubular, the right end of the pull rod extends into the profile shell, the first fish eye ball head bearing, the pull rod plug and the pull rod are sequentially connected to the left end of the pull rod through threads, movable displacement is formed between the pull rod and the head cap, and the magnetic ring is sleeved on the periphery of the right end of the pull rod.

Furthermore, the pull rod assembly further comprises a guide block and a spring, the guide block is sleeved on the periphery of the pull rod to guide the pull rod to move in the section shell, the spring is sleeved on the periphery of the pull rod between the guide block and the magnetic ring, and two ends of the spring are respectively connected with the guide block and the magnetic ring.

Furthermore, the sensitive element assembly comprises an insulating sleeve, an insulating cover, a shielding pipe, a sensitive element circuit board, a signal plate, a sensitive element shielding cover and a copper base, the magnetostrictive displacement sensor also comprises an aviation plug, a second fish eye ball head bearing, a mounting seat, a sealing gasket and a shock pad, the second fish eye ball head bearing is connected to the right end of the mounting seat, the mounting seat is connected to the right end of the section bar shell, the aviation plug is connected to the side face of the mounting seat and is connected with the signal plate through a lead, the insulating sleeve and the insulating cover are connected through high-temperature waterproof glue and are positioned in the section bar shell, the right end of the insulating sleeve and the insulating cover are attached to the mounting seat, the sensitive element shielding cover is welded on the sensitive element circuit board and is fixed with the copper base through a screw, and the copper base is connected with the shielding pipe through silver brazing, the signal plate is connected with the sensitive element circuit board through a pin header, and the shielding tube, the sensitive element circuit board, the signal plate, the sensitive element shielding cover and the copper base are accommodated in the insulating sleeve and the insulating cover.

Furthermore, a vibration-proof pad and a sealing pad are arranged between the insulating cover and the mounting seat.

Furthermore, the magnetostrictive displacement sensor with the push-pull rod convenient to install further comprises a clamping piece, and the clamping piece is clamped at the periphery of the section bar shell and is provided with a bolt hole for connecting an external device.

The utility model has the advantages of as follows:

1. the structure part of the utility model can be parameterized according to the requirements of customers;

2. the structure is relatively simple, the aluminum alloy section bar provides flexible installation configuration, and the installation is convenient.

3. The position measurement is completely non-contact, so that the service life is effectively prolonged;

4. the insulating assembly and the shielding assembly in the aluminum alloy section bar play roles in protecting internal electric devices from being damaged due to static electricity and inhibiting interference of external signals to the inside of the aluminum alloy section bar to a certain extent;

5. compared with the wire outlet mode of other sensors, the wire outlet mode of the aerial plug connector is simpler in structure and small in size, and a large amount of installation space can be saved;

6. the sensor is conveniently and quickly connected with the equipment by adopting a card, and is convenient to disassemble;

7. by means of the tie rod assembly, the sensor can be mounted between the two joints, making it possible to measure the distance between the two independent movable parts;

8. the sealing gasket is arranged between the insulating assembly and the mounting seat for sealing, the waterproof effect is better, the maintenance is convenient, and the long-term stable and reliable work can be realized under the severe environment.

9. The utility model discloses the software part can relate to anti-vibration procedure, realizes the high-quality shock resistance of sensor.

10. The magnetic ring of sensor is inside the aluminium alloy, effectual and external isolation, more effectual assurance echo signal's stable output.

Drawings

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. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic structural diagram of a push-pull rod type conveniently installed magnetostrictive displacement sensor provided by the present invention;

FIGS. 2-3 are schematic views of different viewing angles of a card provided by the present invention;

in the figure:

the device comprises a first fish eyeball head bearing 1, a pull rod plug 2, a head cap 3, a section bar 4, a guide block 5, a spring 6, a magnetic ring 7, an insulating sleeve 8, an insulating cover 9, a shielding pipe 10, a sensitive element circuit board 11, an aviation plug 12, a second fish eyeball head bearing 13, a mounting seat 14, a sealing gasket 15, a shockproof pad 16, a signal plate 17, a sensitive element shielding cover 18, a copper base 19, a clamping piece 20 and a pull rod 21.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. 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, the embodiment provides a magnetostrictive displacement sensor with a push-pull rod for convenient installation, where the magnetostrictive displacement sensor with a push-pull rod for convenient installation includes a hollow tubular section casing 4, a pull rod assembly, a magnetic ring 7, and a sensing element assembly, a right end of the pull rod assembly is telescopically located in the section casing 4, the magnetic ring 7 is connected to a right end of the pull rod assembly, and a left end of the sensing element assembly extends into a right end of the pull rod assembly located in the section casing 4, so that the sensing element assembly senses a relative position change of the magnetic ring 7 when the pull rod assembly moves along the section casing 4.

During specific use, the section bar shell 4 is connected with an external fixed device, the pull rod assembly is connected with an external moving device, the pull rod assembly drives the magnetic ring 7 to move axially along the section bar shell in the novel shell 4, and then a magnetic field induced by the sensitive element assembly changes and is converted into an electric signal to output and calculate relative displacement. In the embodiment, the magnetic ring 7 and the sensitive element assembly are arranged at the right end of the pull rod assembly and are positioned in the section bar shell 4, so that the magnetic ring can be protected, and external signals can be inhibited and shielded.

Example 2

As shown in fig. 1, the pull rod assembly includes a first fish eye ball head bearing 1, a pull rod plug 2, a head cap 3 and a pull rod 21, the pull rod 21 is hollow and tubular, the right end of the pull rod extends into the profile housing 4, the first fish eye ball head bearing 1, the pull rod plug 2 and the pull rod 21 are sequentially connected to the left end of the pull rod 21 through threads, a movable displacement is formed between the pull rod 21 and the head cap 3, and the magnetic ring 7 is sleeved on the periphery of the right end of the pull rod 21.

In this embodiment, the external movable component can be connected through a first fisheye bearing 1 (for example, M4 type), the first fisheye bearing 1 is connected with a pull rod plug 2 in a threaded manner, the pull rod plug 2 is connected with a pull rod 21 in a threaded manner, and the end cap 3 is used for plugging the left end of the profile housing 4, and the two are connected through four M4 × 12 bolts to prevent the right end of the pull rod 21 from being separated from the profile housing 4.

Example 3

As shown in fig. 1, the pull rod assembly further includes a guide block 5 and a spring 6, the guide block 5 is sleeved on the periphery of the pull rod 21 to guide the movement of the pull rod 21 in the profile housing 4, the spring 6 is sleeved on the periphery of the pull rod 21 between the guide block 5 and the magnetic ring 7, and two ends of the spring are respectively connected to the guide block 5 and the magnetic ring 7. The guide block 5 of the embodiment plays a role in guiding the pull rod 21 in the profile housing 4, and the magnetic ring 7 and the guide block are connected through the spring 6, so that the shock resistance is improved.

Example 4

As shown in fig. 1, the sensing element assembly includes an insulating sleeve 8, an insulating cover 9, a shielding tube 10, a sensing element circuit board 11, a signal board 17, a sensing element shielding cover 18 and a copper base 19, the magnetostrictive displacement sensor further includes an aviation plug 12, a second fish eye ball head bearing 13, a mounting seat 14, a sealing gasket 15 and a shock pad 16, the second fish eye ball head bearing 13 is connected to the right end of the mounting seat 14, the mounting seat 14 is connected to the right end of the profile housing 4, the aviation plug 12 is connected to the side surface of the mounting seat 14 and connected to the signal board 17 through a wire, the insulating sleeve 8 and the insulating cover 9 are connected through a high-temperature waterproof adhesive and located in the profile housing 4, and the right end of the insulating sleeve is attached to the mounting seat 14, the sensing element shielding cover 18 is welded to the sensing element circuit board 11 and fixed to the copper base 19 through a screw, the copper base 19 is connected with the shielding tube 10 through silver soldering, the signal plate 17 is connected with the sensitive element circuit board 11 through pin headers, and the shielding tube 10, the sensitive element circuit board 11, the signal plate 17, the sensitive element shielding cover 18 and the copper base 19 are accommodated in the insulating sleeve 8 and the insulating cover 9.

In this embodiment, the shielding tube 10, the sensing element circuit board 11, the signal board 17, the sensing element shielding case 18 and the copper base 19 are accommodated in the insulating sleeve 8 and the insulating case 9, so that not only can internal components be protected, but also external signals can be shielded. In the embodiment, the waveguide wire in the shielding tube 10 induces the magnetic field change and converts the magnetic field change into an electric signal to be transmitted to the sensitive element circuit board 11 and the signal board 17, and then the relative displacement is calculated through the output of the aviation plug 12.

Example 5

As shown in fig. 1, a vibration-proof pad 16 and a sealing pad 15 are disposed between the insulating cover 9 and the mounting seat 14. The shockproof pad 16 and the sealing pad 15 in the embodiment can play the roles of sealing and shock resistance between the mounting seat 14 and the section bar shell 4, have better waterproof effect, are convenient to overhaul and maintain, and can stably and reliably work for a long time in severe environment

Example 6

As shown in fig. 1 to 3, the magnetostrictive displacement sensor with push-pull rod for easy installation further includes a clamping piece 20, and the clamping piece 20 is clamped on the periphery of the profile housing 4 and is provided with a bolt hole for connecting an external device.

The clamping piece 20 of the embodiment can be clamped on a groove on the periphery of the profile housing 4, and is connected with an external device through a bolt hole in a threaded mode, so that the profile housing 4 is fixed.

Example 7

The present embodiment provides an implementation of a magnetostrictive displacement sensor with push-pull rod for easy installation. The utility model discloses an external structure size basis is convenient for product installation and product quality and design. The section bar 4 is 37mm long and 35.5mm high, and can be fixed with equipment through the card 20 by means of the clamping groove of the section bar. The other end of the sensor is fixed with the equipment which moves relatively through the M6 fisheye ball head bearing 1. The sensor mainly comprises: the end cap 3, the section bar 4, the aviation plug 12, the M6 fisheye ball head bearing 13, the mounting seat 14, the sealing gasket 15, the shock pad 16 and the card 20. The structure of the pull rod assembly is respectively as follows: m6 first fish eyeball head bearing 1, pull rod plug 2, guide block 5, phi 18 x 1.5 spring 6, magnetic ring 7 and pull rod 21; the insulating assembly structure is respectively: an insulating sleeve 8 and an insulating cover 9; the shielding assembly structure is respectively as follows: a shielding tube 10, a copper base 19; the sensitive element assembly structure is respectively as follows: the sensitive element circuit board 11, the signal board 17 and the sensitive element shielding cover 18; the structure is characterized in that: 1. the pull rod 21 is in a hollow tubular shape, one end of the pull rod 21 is connected with the pull rod plug 2 through a thread, and the other end of the pull rod 21 is fixed with the guide block 5, the phi 18 x 1.5 spring 6 and the magnetic ring 7 through a clamping groove on the pull rod 21; the M6 fish eyeball head bearing 1 and the pull rod plug 2 are fixed through threads; 3. the insulation component is formed by bonding an insulation sleeve 8 and an insulation cover 9 through high-low temperature resistant anti-seismic glue; 4. the shielding assembly is formed by welding a shielding pipe 10 and a copper base 19 together; 5. the end cap 3 is connected with the section bar 4 through a bolt; 6. the draw bar assembly reciprocates in the profile 4; 7. the insulating assembly is inserted into the pull rod assembly, the shielding assembly is inserted into the insulating assembly, and the sensitive element assembly is fixed on the shielding assembly by using a bolt; 8. the shock pad 16 is positioned between the sensor assembly and the mounting base 14 to provide cushioning and shock resistance; 9. the sealing gasket 15 seals the insulating component and the mounting seat 14 to play a sealing role; 10. the aviation plug 12 is connected with the mounting seat 14 through threads and outputs a corresponding current signal; the M6 second fish eye ball bearing 13 is connected with the mounting seat 14 through screw threads.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The magnetostrictive displacement sensor with the push-pull rod type convenient installation is characterized by comprising a hollow tubular section shell (4), a pull rod assembly, a magnetic ring (7) and a sensitive element assembly, wherein the right end of the pull rod assembly is telescopically positioned in the section shell (4), the magnetic ring (7) is connected with the right end of the pull rod assembly, and the left end of the sensitive element assembly extends into the right end of the pull rod assembly positioned in the section shell (4) so as to sense the relative position change of the magnetic ring (7) by the sensitive element assembly when the pull rod assembly moves along the section shell (4).

2. The push-pull rod type conveniently-installed magnetostrictive displacement sensor according to claim 1, wherein the pull rod assembly comprises a first fish eye ball head bearing (1), a pull rod plug (2), a head cap (3) and a pull rod (21), the pull rod (21) is hollow and tubular, the right end of the pull rod (21) extends into the profile housing (4), the first fish eye ball head bearing (1), the pull rod plug (2) and the pull rod (21) are sequentially connected to the left end of the pull rod (21) through threads, a movable displacement is formed between the pull rod (21) and the head cap (3), and the magnetic ring (7) is sleeved on the periphery of the right end of the pull rod (21).

3. The push-pull rod type conveniently-installed magnetostrictive displacement sensor according to claim 2, wherein the pull rod assembly further comprises a guide block (5) and a spring (6), the guide block (5) is sleeved on the outer periphery of the pull rod (21) to guide the movement of the pull rod (21) in the profile housing (4), the spring (6) is sleeved on the outer periphery of the pull rod (21) between the guide block (5) and the magnetic ring (7), and two ends of the spring are respectively connected with the guide block (5) and the magnetic ring (7).

4. The push-pull rod type conveniently-installed magnetostrictive displacement sensor according to claim 1, wherein the sensing element assembly comprises an insulating sleeve (8), an insulating cover (9), a shielding pipe (10), a sensing element circuit board (11), a signal plate (17), a sensing element shielding cover (18) and a copper base (19), the magnetostrictive displacement sensor further comprises an aviation plug (12), a second fish eye ball head bearing (13), a mounting seat (14), a sealing gasket (15) and a shock pad (16), the second fish eye ball head bearing (13) is connected to the right end of the mounting seat (14), the mounting seat (14) is connected to the right end of the section bar shell (4), the aviation plug (12) is connected to the side of the mounting seat (14) and is connected with the signal plate (17) through a wire, and the insulating sleeve (8) and the insulating cover (9) are connected through high-temperature waterproof glue and are located on the section bar shell (4) The sensitive element shielding cover (18) is welded on a sensitive element circuit board (11) and is fixed with a copper base (19) through screws, the copper base (19) is connected with a shielding tube (10) through silver brazing, a signal plate (17) is connected with the sensitive element circuit board (11) through a pin header, and the shielding tube (10), the sensitive element circuit board (11), the signal plate (17), the sensitive element shielding cover (18) and the copper base (19) are contained in an insulating sleeve (8) and an insulating cover (9).

5. Push-pull rod mounted magnetostrictive displacement sensor according to claim 4, characterized in that a shock-absorbing pad (16) and a sealing pad (15) are arranged between the insulating cover (9) and the mounting seat (14).

6. The push-pull rod mounted magnetostrictive displacement sensor according to claim 1, further comprising a clamping piece (20), wherein the clamping piece (20) is clamped at the periphery of the profile housing (4) and is provided with a bolt hole for connecting an external device.