CN213956239U - Be used in environmental monitor's LVDT clamping device - Google Patents

Abstract

The utility model relates to a be used in environment monitor's LVDT clamping device relates to environment monitor technical field, and the expansion end of the interior active device of environment monitor who has solved among the prior art often deflects because of its drive iron core in the motion, and makes the movement track of iron core not coaxial with LVDT's coil and lead to the numerical value of LVDT test inaccurate, and more serious is that the time has been of a specified duration and still can damage LVDT's technical problem. The technical characteristics are that the device comprises a shell fixing device which is fixedly connected with a fixed end of a movable device in the environment monitor; the iron core fixing device is fixedly connected with the movable end of a movable device in the environment monitor; wherein, still be equipped with between shell fixing device and the iron core fixing device and be used for preventing the rotatory anti-rotation device of expansion end of the interior active device of environmental monitoring appearance. The LVDT testing method has the beneficial effects of ensuring accurate testing value of the LVDT and ensuring normal service life of the LVDT.

Description

Be used in environmental monitor's LVDT clamping device

Technical Field

The utility model relates to an environmental monitoring appearance technical field, in particular to LVDT clamping device for environmental monitoring appearance.

Background

The environmental monitoring instrument is a general term for monitoring various parameters of indoor and outdoor environments, and determines environmental quality (or pollution degree) and a change trend thereof by measuring a representative value of factors affecting the environmental quality.

LVDT is an abbreviation of linear variable differential transformer, belonging to the linear displacement transducer. The working principle is simply that of a movable iron core transformer. The magnetic motor consists of a primary coil, two secondary coils, an iron core, a coil framework, a shell and the like. The linear range of the LVDT is such that the core movement cannot exceed the linear range of the coil during operation, which would otherwise produce a non-linear value, and therefore all LVDTs have a linear range.

Install the LVDT in the environmental monitoring instrument among the prior art is the stiff end with the enclosure fixed mounting movable device in the environmental monitoring instrument of LVDT, the expansion end with the movable device of LVDT's iron core fixed mounting in the environmental monitoring instrument, survey the numerical value of the activity of the movable device in the environmental monitoring instrument with this, but in the actual work process, the expansion end of the movable device in the environmental monitoring instrument is when moving, often because of it drives the iron core deflection, and the movement track that makes the iron core is coaxial and lead to the numerical value of LVDT test not with LVDT's coil, more serious is that time has still can damage LVDT for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve the expansion end of the interior active device of environmental monitoring appearance among the prior art and in the motion, often deflect because of its drive iron core, and make the movement track of iron core not coaxial with LVDT's coil and lead to the numerical value of LVDT test inaccurate, more serious is that the time has been of a specified duration and still can damage LVDT's technical problem, provides a LVDT clamping device who is used in environmental monitoring appearance.

In order to solve the technical problem, the technical scheme of the utility model is specifically as follows:

an LVDT clamp for an environmental monitor, comprising:

the shell fixing device is fixedly connected with the fixed end of a movable device in the environment monitor;

the iron core fixing device is fixedly connected with the movable end of a movable device in the environment monitor;

wherein, still be equipped with between shell fixing device and the iron core fixing device and be used for preventing the rotatory anti-rotation device of expansion end of the interior active device of environmental monitoring appearance.

Further, the housing fixing means includes:

the first fixing plate is fixedly connected with the fixed end of a movable device in the environment monitoring instrument, a first V-shaped groove is formed in one side, far away from the fixed end of the movable device, of the first fixing plate, and first support lugs are arranged on two sides of the first V-shaped groove;

a second V-shaped groove is formed in one side, close to the first V-shaped groove, of the second fixing plate, and second support lugs are arranged on two sides of the second V-shaped groove;

a clamping space for clamping the LVDT shell is formed between the first V-shaped groove and the second V-shaped groove, and the LVDT shell is clamped in the clamping space;

the first support lug and the second support lug are fixedly connected through a screw.

Further, the iron core fixing device includes:

the flat surface is arranged at the movable end of a movable device in the environment monitor;

the first iron core fixing plate is fixedly connected with the flat surface;

a second core fixing plate integrally formed with the first core fixing plate;

the second iron core fixing plate is provided with a threaded hole in threaded connection with the iron core of the LVDT, and the threaded hole is parallel to the axis of the movable end of a movable device in the environment monitor.

Further, the anti-rotation device includes:

the guide post is fixedly connected with the second iron core fixing plate;

the linear bearing is fixedly arranged on the second fixing plate;

the guide post is in sliding fit with the linear bearing.

Furthermore, the second iron core fixing plate is provided with a first strip hole and a second strip hole arranged above the first strip hole;

the top of guide post inserts first rectangular downthehole and with the laminating of the bottom surface in first rectangular hole, the top fixed connection of second rectangular hole and guide post is passed to the screw.

The utility model discloses following beneficial effect has:

the utility model discloses a be used in environment monitoring instrument's LVDT clamping device, through setting up anti-rotating device, the expansion end of the interior active device of environment monitoring instrument just can not have the pivoted phenomenon in the motion, so the expansion end just can not drive the iron core and deflect, makes the movement track of iron core coaxial with LVDT's coil, guarantees that the numerical value of LVDT test is accurate, guarantees LVDT's normal life.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural diagram of an LVDT clamping device for an environmental monitor according to the present invention;

fig. 2 is a schematic structural diagram of an iron core fixing device of an LVDT clamping device for an environmental monitor according to the present invention;

fig. 3 is a schematic structural diagram of the casing fixing device of the LVDT clamping device for the environmental monitor of the present invention.

The reference numerals in the figures denote:

1. a housing fixture; 101. a first fixing plate; 102. a second fixing plate; 103. a first lug; 104. A second lug; 105. a clamping space; 2. a housing; 3. an anti-rotation device; 301. a guide post; 302. a linear bearing; 303. a first elongated hole; 304. a second elongated hole; 4. an iron core; 5. an iron core fixing device; 501. A first core fixing plate; 502. a second iron core fixing plate; 503. flat surface; 6. a movable end; 7. and a fixed end.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1-3, an LVDT clamp for an environmental monitor includes:

the device comprises a shell fixing device 1, wherein the shell fixing device 1 is fixedly connected with a fixed end 7 of a movable device in the environment monitor;

the iron core fixing device 5 is fixedly connected with a movable end 6 of a movable device in the environment monitor;

wherein, still be equipped with between shell fixing device 1 and the iron core fixing device 5 and be used for preventing the interior active device's of environmental monitor activity end 6 pivoted rotational anti-rotation device 3.

Specifically, through setting up rotational lock 3, the expansion end 6 of the interior active device of environmental monitoring appearance just can not have the pivoted phenomenon in the motion, so expansion end 6 just can not drive iron core 4 and deflect, makes the movement track of iron core 4 coaxial with the coil in LVDT's the shell 2, guarantees that the numerical value of LVDT test is accurate, guarantees LVDT's normal life.

The housing fixing device 1 includes:

the first fixing plate 101 is fixedly connected with a fixed end 7 of a movable device in the environment monitoring instrument, a first V-shaped groove is formed in one side, far away from the fixed end 7 of the movable device, of the first fixing plate 101, and first supporting lugs 103 are arranged on two sides of the first V-shaped groove;

a second V-shaped groove is formed in one side, close to the first V-shaped groove, of the second fixing plate 102, and second support lugs 104 are arranged on two sides of the second V-shaped groove;

a clamping space 105 for clamping the LVDT shell 2 is formed between the first V-shaped groove and the second V-shaped groove, and the LVDT shell 2 is clamped in the clamping space 105;

the first lug 103 and the second lug 104 are fixedly connected by screws.

Specifically, the casing 2 of the LVDT is placed in the clamping space 105, the first lug 103 and the second lug 104 are fixedly connected by screws, so that the casing 2 is clamped in the clamping space 105, meanwhile, the first fixing plate 101 and the second fixing plate 102 are fixedly connected, and finally, the casing fixing device 1 and the fixing end 7 are fixedly connected through the fixed connection of the first fixing plate 101 and the fixing end 7;

a clamping space 105 for clamping the LVDT housing 2 is formed between the first V-shaped groove and the second V-shaped groove, so that different types of LVDTs can be clamped by the clamping space 105, and the universality of the housing fixing device 1 is good.

The iron core fixing device 5 includes:

a flat surface 503 of the movable end 6 of the movable device arranged in the environment monitoring instrument;

a first core fixing plate 501 fixedly connected to the flat surface 503;

a second core fixing plate 502 integrally formed with the first core fixing plate 501;

wherein, the second iron core fixing plate 502 is provided with a threaded hole in threaded connection with the iron core 4 of the LVDT, and the threaded hole is parallel to the axis of the movable end 6 of the movable device in the environment monitoring instrument.

Specifically, the first iron core fixing plate 501 is fixedly connected with the flat surface 503 of the movable end 6 through a bolt, and the flat surface 503 is arranged, so that the first iron core fixing plate 501 can be conveniently connected with the movable end 6; one end of the iron core 4 is connected with the second iron core fixing plate 502 through threads, and the other end of the iron core 4 is arranged in the shell 2, so that the movable end 6 can drive the iron core 4 to move back and forth along the shell 2 in the back and forth movement process; the axis of the movable end 6 of the movable device in the threaded hole and the environment monitoring instrument is parallel, so that the iron core 4 can be guaranteed to normally move along the shell 2, and the phenomenon that the iron core 4 collides with the coil in the shell 2 to cause damage to the LVDT is avoided.

The rotation preventing device 3 includes:

a guide column 301 fixedly connected to the second core fixing plate 502;

a linear bearing 302 fixedly mounted on the second fixing plate 102;

the guide posts 301 are in sliding engagement with linear bearings 302.

Specifically, when the movable end 6 moves back and forth, will drive iron core fixing device 5 and iron core 4 back-and-forth movement, in order to solve because of movable end 6 drives iron core 4 and deflects, and make the movement track of iron core 4 not coaxial with the coil of LVDT and lead to the numerical value of LVDT test inaccurate, more serious is the time of a specified duration and still can damage the problem of LVDT, anti-rotation device 3 has been set up, when movable end 6 drove iron core fixing device 5 and iron core 4 back-and-forth movement, guide post 301 moves back and forth along linear bearing 302, the guide effect of guide post 301 and linear bearing 302 has been had, just so can prevent that movable end 6 from rotating, just can guarantee that iron core 4 can normally move along shell 2, avoid iron core 4 and the interior coil of shell 2 to take place to collide with, and lead to LVDT damage.

The second core fixing plate 502 is provided with a first elongated hole 303 and a second elongated hole 304 disposed above the first elongated hole 303;

the top end of the guide column 301 is inserted into the first long hole 303 and attached to the bottom surface of the first long hole 303, and the screw passes through the second long hole 304 and is fixedly connected with the top end of the guide column 301.

Specifically, for the LVDTs of different models, when the housing 2 is clamped in the clamping space 105, the axial position of the LVDT may change, or for some reasons of processing and installation, so that the axial position of the linear bearing 302 on the second fixing plate 102 may change, in order to enable the guide post 301 to smoothly slide and fit with the linear bearing 302, the first elongated hole 303 and the second elongated hole 304 are provided, so that the guide post 301 inserted into the linear bearing 302 can be adaptively inserted into the first elongated hole 303, and the screw passes through the second elongated hole 304 to be fixedly connected with the top end of the guide post 301, that is, the first elongated hole 303 and the second elongated hole 304 are provided to ensure the smooth installation of the guide post 301.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (5)

1. An LVDT clamping device for an environmental monitor, comprising:

the shell fixing device (1), the shell fixing device (1) is fixedly connected with a fixed end (7) of a movable device in the environment monitor;

the iron core fixing device (5), the iron core fixing device (5) is fixedly connected with a movable end (6) of a movable device in the environment monitor;

and an anti-rotation device (3) used for preventing a movable end (6) of a movable device in the environment monitor from rotating is further arranged between the shell fixing device (1) and the iron core fixing device (5).

2. An LVDT clamp for environmental monitoring according to claim 1, characterized in that the housing fixture (1) comprises:

the first fixing plate (101) is fixedly connected with a fixed end (7) of a movable device in the environment monitoring instrument, a first V-shaped groove is formed in one side, far away from the fixed end (7) of the movable device, of the first fixing plate (101), and first support lugs (103) are arranged on two sides of the first V-shaped groove;

a second V-shaped groove is formed in one side, close to the first V-shaped groove, of the second fixing plate (102), and second support lugs (104) are arranged on two sides of the second V-shaped groove;

a clamping space (105) for clamping the LVDT shell (2) is formed between the first V-shaped groove and the second V-shaped groove, and the LVDT shell (2) is clamped in the clamping space (105);

the first support lug (103) and the second support lug (104) are fixedly connected through screws.

3. An LVDT clamp for environmental monitoring according to claim 2, characterized in that the core fixture (5) comprises:

a flat surface (503) of a movable end (6) of a movable device arranged in the environment monitor;

a first iron core fixing plate (501) fixedly connected with the flat surface (503);

a second core fixing plate (502) integrally formed with the first core fixing plate (501);

the second iron core fixing plate (502) is provided with a threaded hole in threaded connection with the iron core (4) of the LVDT, and the threaded hole is parallel to the axis of a movable end (6) of a movable device in the environment monitor.

4. An LVDT clamp for environmental monitoring according to claim 3, characterized in that the anti-rotation device (3) comprises:

the guide post (301) is fixedly connected with the second iron core fixing plate (502);

a linear bearing (302) fixedly mounted on the second fixing plate (102);

the guide post (301) is in sliding fit with the linear bearing (302).

5. An LVDT clamping device for an environmental monitor according to claim 4, wherein the second core fixing plate (502) is provided with a first elongated hole (303) and a second elongated hole (304) arranged above the first elongated hole (303);

the top end of the guide column (301) is inserted into the first long hole (303) and attached to the bottom surface of the first long hole (303), and a screw penetrates through the second long hole (304) and is fixedly connected with the top end of the guide column (301).

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