CN212461315U - Linear variable differential transformer fixed bolster - Google Patents

Abstract

The utility model discloses a linear variable differential transformer fixed bolster belongs to the fixed bolster field. The variable differential transformer fixing support comprises a cross beam, an extension plate, a direction-changing plate, a first fastener and a second fastener; the crossbeam includes first troughed frame, and the first end of extension board is inserted in first troughed frame, and the second end of extension board stretches out first troughed frame: the extension plate is configured to be movable relative to the cross beam along the horizontal direction so as to adjust the length of the second end of the extension plate extending out of the cross beam; the first fastener is used for fixing the extension plate to the cross beam; the second fastener is used for locking the direction-changing plate to the second end of the extension plate; the direction-changing plate has a parallel connection state parallel to the extension plate and a vertical connection state perpendicular to the extension plate; the direction changing plate is used for fixing an external linear variable differential transformer. The utility model discloses a linear variable differential transformer fixed bolster rigidity is good, is convenient for fix, is convenient for adjust, and the commonality is good and low in manufacturing cost.

Description

Linear variable differential transformer fixed bolster

Technical Field

The utility model relates to a fixed bolster especially relates to a linear variable differential transformer fixed bolster.

Background

The Linear Variable Differential Transformer (LVDT) is a linear displacement transducer, can be used for measuring the elongation, vibration frequency, amplitude, thickness and expansion degree of an object and other accurate data, and has wide application in the manufacturing and test of high-end or important mechanical equipment such as airplanes, missiles, machine tools, engines and the like. Before the mechanical equipment or components are measured, the linear variable differential transformer needs to be installed on a fixed bracket.

At present, no universal linear variable differential transformer fixing bracket exists in the prior art; in the prior art, a user generally designs and manufactures a fixing bracket for fixing a linear variable differential transformer according to actual working conditions, or adopts a modified magnetic frame for fixing the linear variable differential transformer; however, since the fixing bracket used by the user is generally manufactured or modified according to specific working conditions, the existing fixing bracket for the linear variable differential transformer has the following defects: (1) can only be used for specific measurement conditions; (2) the rigidity of the bracket cannot be ensured, so that the accuracy of the measurement result is influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, one of the objects of the present invention is to provide a fixing bracket for a linear variable differential transformer.

The utility model discloses a following technical scheme realizes:

a linear variable differential transformer fixing support comprises a cross beam, an extension plate, a direction-changing plate, a first fastener and a second fastener;

the cross beam comprises a first channel frame, the first end of the extension plate is inserted into the first channel frame, and the second end of the extension plate extends out of the first channel frame: the extension plate is configured to be movable relative to the cross beam in a horizontal direction to adjust the length of the second end of the extension plate extending out of the cross beam; the first fastener is used for fixing the extension plate to the cross beam;

the second fastener is used for locking the direction-changing plate to the second end of the extension plate; the direction-changing plate has a parallel connection state parallel to the extension plate and a vertical connection state perpendicular to the extension plate; the direction changing plate is used for fixing an external linear variable differential transformer.

Furthermore, the first groove-shaped frame is provided with a first mounting hole, the extension plate is provided with a second mounting hole, and the first mounting hole and/or the second mounting hole are strip-shaped holes extending along the horizontal direction.

Further, the second mounting hole is an oblong hole, the first fastener is a butterfly bolt, and the first fastener is used for being inserted into the second mounting hole to be in threaded connection with the first channel-shaped frame.

Furthermore, the first mounting hole is a through hole, a first nut is fixedly welded on the back side of the first groove-shaped frame, which is far away from the extension plate, and the first fastener is used for being inserted into the second mounting hole and being in threaded connection with the first nut so as to fix the extension plate to the cross beam.

Further, the extension plate is a strip-shaped flat plate; a third hole group is arranged at the second end of the extension plate and comprises four third mounting holes positioned on the corner points of the square; a fourth hole group is arranged on the turning plate and comprises four fourth mounting holes positioned on the angular points of the square;

the second fastener is used for penetrating through the third mounting hole and the fourth mounting hole so as to fix the direction-changing plate to the extension plate in parallel or vertically.

Furthermore, a plurality of groups of third hole groups are arranged on the extension plate, and a plurality of groups of fourth hole groups are arranged on the turning plate.

Furthermore, the cross beam further comprises an end head fixed at the end part of the first groove-shaped frame in the length direction, wherein the end head is provided with at least two end head threaded holes and at least two end head through holes.

Further, the device also comprises a vertical column and a third fastener; the upright post comprises a second groove-shaped frame which is vertically arranged and a bottom plate which is fixed at the bottom of the second groove-shaped frame;

the second groove-shaped frame is provided with a plurality of groups of upright post mounting holes at intervals along the vertical direction, and the third fasteners are used for being inserted into the upright post mounting holes and the end head threaded holes so as to fix the cross beam on the upright posts; the bottom plate is used for being fixed in an external fixing seat so as to fix the fixing support on the external fixing seat.

Further, the end head through hole is used for connecting the end head with an external magnetic base.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the rigidity is good, and be convenient for fixed, be convenient for adjust, the commonality is good and low in manufacturing cost.

Drawings

Fig. 1 is a schematic view of the overall structure of a linear variable differential transformer fixing bracket according to the present invention;

fig. 2 is a schematic view of the overall structure of the fixing bracket of the linear variable differential transformer of the present invention;

fig. 3 is a schematic view of the overall structure of the fixing bracket of the linear variable differential transformer of the present invention;

fig. 4 is a first schematic structural view of a cross beam of the present invention;

fig. 5 is a schematic structural view of a cross beam of the present invention;

fig. 6 is a schematic structural view of the extension plate of the present invention;

fig. 7 is a schematic structural diagram of the bottom plate of the present invention;

fig. 8 is a schematic view of the fixing bracket of the linear variable differential transformer of the present invention fixed to an external fixing base;

in the figure: 10. a cross beam; 11. a first channel frame; 111. a first mounting hole; 12. a tip; 121. end threaded holes; 122. a tip through hole; 13. a first nut; 20. an extension plate; 21. a second mounting hole; 22. a third mounting hole; 30. a direction-changing plate; 31. a fourth mounting hole; 40. a column; 41. a second channel frame; 411. a column mounting hole; 42. a base plate; 421. a bottom plate slotted hole; 422. a bottom plate through hole; 81. a first fastener; 82. A second fastener; 83. a third fastener; 80. a linear variable differential transformer; 90. a magnetic base.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1 to 8, the present embodiment provides a linear variable differential transformer fixing bracket including a cross member 10, an extension plate 20, a direction-changing plate 30, a first fastening member 81 and a second fastening member 82;

the cross-member 10 comprises a first channel 11, a first end of the extension plate 20 being intended to be inserted inside said first channel 11, and a second end of the extension plate 20 protruding outside said first channel 11: the extension board 20 is configured to be movable in a horizontal direction with respect to the cross member 10 to adjust a length of the second end of the extension board 20 protruding out of the cross member 10; the first fastening member 81 is used to fix the extension board 20 to the cross member 10;

the second fastener 82 is used for locking the direction-changing plate 30 to the second end of the extension plate 20; the direction-changing plate 30 has a parallel connection state parallel to the extension plate 20 and also has a vertical connection state perpendicular to the extension plate 20; the direction changing plate 30 is used to fix the external linear variable differential transformer 80.

Preferably, the first groove-shaped frame 11 in this embodiment is formed by processing channel steel, and the first groove-shaped frame 11 is formed by using channel steel, so that the measurement accuracy of the linear variable differential transformer 80 can be improved by using the characteristic of good rigidity of the channel steel, the material is convenient to obtain, and the manufacturing cost is reduced; the first channel frame 11 comprises a waist portion and leg portions connected to both sides of the waist portion, and the two leg portions are respectively positioned at the top and bottom of the first channel frame 11 when the fixing bracket is in use.

On the basis of the above structure, the fixing steps of the fixing bracket of the embodiment are as follows:

a fixing step: fixing the cross beam 10 on an external fixed seat according to actual conditions;

fixing the extension plate 20: placing the extension plate 20 into the first groove-shaped frame 11, moving the extension plate 20 according to actual requirements, adjusting the length of the second end of the extension plate 20 extending out of the cross beam 10, so as to adjust the horizontal distance between the extension plate 20 and the object to be measured, and fixing the extension plate 20 to the first groove-shaped frame 11 by using a first fastener 81;

fixing the direction-changing plate 30: the direction-changing plate 30 is fixed to the extension plate 20 in parallel or perpendicularly by the second fastening member 82 according to a specific measurement position of the object to be measured;

and (3) LVDT fixing step: the linear variable differential transformer 80 is fixed to the direction changing plate 30, completing the fixing.

Specifically, in the fixing step of the direction-changing plate 30, if the surface to be measured is the side surface of the object to be measured in the vertical direction, the direction-changing plate 30 is horizontally fixed to the extension plate 20; if the surface to be measured is the bottom surface of the object to be measured, the direction-changing plate 30 is vertically fixed to the extension plate 20, so that one end of the direction-changing plate 30, which is used for the linear variable differential transformer 80, faces upward; if the surface to be measured is the top surface of the object to be measured, the direction-changing plate 30 is vertically fixed to the extension plate 20 such that one end of the direction-changing plate 30 for the linear variable differential transformer 80 faces downward.

The fixed bolster of this embodiment, rigidity is good, and easy fixed, it is convenient to adjust, and the commonality can be good, is applicable to multiple measurement operating mode, and low in manufacturing cost.

Preferably, in order to realize stepless adjustment of the horizontal distance between the fixing bracket and the object to be measured, the first channel-shaped frame 11 is provided with a first mounting hole 111, the extension plate 20 is provided with a second mounting hole 21, and the first mounting hole 111 and/or the second mounting hole 21 are strip-shaped holes extending along the horizontal direction, so that in the step of fixing the extension plate 20, the extension plate 20 can be moved between two extreme positions at will, the length of the second end of the extension plate 20 extending out of the first channel-shaped frame 11 can be adjusted finely, as long as the second mounting hole 21 is ensured to be communicated with the first mounting hole 111, so that the extension plate 20 is fixed to the cross beam 10 by using the first fastening member 81.

Preferably, as shown in fig. 2, 3 and 6, the second mounting hole 21 is an oblong hole, the first fastening member 81 is a thumb bolt, and the first fastening member 81 is used for being inserted into the second mounting hole 21 to be screwed with the first channel frame 11; the butterfly bolt is used as the first fastener 81, when the extension plate 20 needs to be fixed or the position of the extension plate 20 needs to be adjusted, a user can conveniently and directly screw the butterfly bolt by hand without using tools, and the fixing support is convenient to fix and adjust.

Preferably, as shown in fig. 4 and 5, for convenience of manufacturing, the first mounting hole 111 is a through hole, the first nut 13 is fixed to the back side of the first channel frame 11 away from the extension plate 20 by welding, and the first fastening member 81 is used for being inserted into the second mounting hole 21 and the first mounting hole 111 to be screwed with the first nut 13 to fix the extension plate 20 to the cross beam 10; like this, when processing the channel-section steel in order to form first troughed frame 11, only need on the channel-section steel after the drilling welded fastening first nut 13 can, and first nut 13 can adopt the standard component of being convenient for purchase, need not to bore the screw thread in first mounting hole 111. The fixing bracket of the embodiment is convenient to manufacture.

Preferably, the extension plate 20 is an elongated flat plate; a third hole group is arranged at the second end of the extension plate 20, and the third hole group comprises four third mounting holes 22 positioned at the corner points of the square; a fourth hole group is arranged on the turning plate 30 and comprises four fourth mounting holes 31 positioned on the angular points of the square; the second fastening member 82 is used to pass through the third mounting hole 22 and the fourth mounting hole 31, and can fix the direction-changing plate 30 to the extension plate 20 in parallel or perpendicularly according to the measuring direction of the LVDT; by such an arrangement, the distance between the adjacent third mounting holes 22 and the distance between the adjacent fourth mounting holes 31 are equal, so that when the direction-changing plate 30 is parallel or perpendicular to the extension plate 20, the third mounting holes 22 and the fourth mounting holes 31 can be aligned and communicated, so that the direction-changing plate 30 can be fixed to the extension plate 20 through the second fastening members 82.

Preferably, as shown in fig. 1, 2 and 3, for the convenience of adjustment, the extension plate 20 is provided with a plurality of third hole sets, and the direction-changing plate 30 is provided with a plurality of fourth hole sets. In this embodiment, two rows of third mounting holes 22 are formed in the extension plate 20, and two rows of fourth mounting holes 31 are formed in the direction-changing plate 30.

Preferably, one end of the cross beam 10 is closed, the cross beam 10 further includes a terminal 12 fixed to an end portion of the first channel frame 11 in the length direction, the terminal 12 is welded to the first channel frame 11, the terminal 12 is provided with at least two terminal threaded holes 121, and at least two terminal through holes 122.

Preferably, a column 40 and a third fastener 83; the upright post 40 comprises a second channel-shaped frame 41 arranged vertically and a bottom plate 42 fixed at the bottom of the second channel-shaped frame 41; a plurality of groups of upright post mounting holes 411 are formed in the second groove-shaped frame 41 at intervals along the vertical direction, and third fasteners 83 are inserted into the upright post mounting holes 411 and the end head threaded holes 121 so as to fix the cross beam 10 to the upright posts 40; the bottom plate 42 is used to be fixed to an external fixing base so as to fix the fixing bracket to the external fixing base.

Preferably, the second channel frame 41 in this embodiment is formed by channel steel, so that the rigidity of the fixing bracket can be improved.

On the basis of the above structure, the cross beam 10 of this embodiment can at least realize installing the fixed bolster in the outside fixing base through following several modes, and in this embodiment, the outside fixing base can be the base, also can be magnetic base 90:

(1) as shown in fig. 8, the end 12 of the beam 10 abuts against the magnetic base 90, the magnetic base 90 is provided with a threaded hole, and a fastener passes through the end through hole 122 to fix the beam 10 on the magnetic base 90;

(2) as shown in fig. 1, 2 and 3, the stud 40 can be connected to the cross member 10 by a bolt passing through one of the pair of stud mounting holes 411 and screwed into the threaded head hole 121: two groups of bottom plate long round holes 421 in different directions and two bottom plate through holes 422 are processed on the bottom plate 42 welded and fixed with the second groove-shaped frame 41, and the two groups of bottom plate long round holes 421 are arranged in a 90-degree crossed manner, so that the bottom plate 42 is fixed on a base processed with threaded holes through bolts penetrating through the bottom plate long round holes 421; the bottom plate 42 can also be fixed to an external fixing base in another way: two base plate through holes 422 allow the base plate 42 to be connected to the magnetic base 90 by bolts passing therethrough.

The present embodiment can select whether to set the pillar 40 according to actual conditions in the field.

When the fixing bracket is provided with the upright post 40, the fixing steps in the fixing step of the fixing bracket are specifically as follows: firstly, according to actual conditions in the field, the bottom plate 42 is fixed on the base or the magnetic base 90 through bolts; then, the height of the cross member 10 on the second channel frame 41 is adjusted according to the height of the object to be measured, and after the adjustment, the end 12 of the cross member 10 is fixed to the second channel frame 41 by bolts (see fig. 1, 2, and 3).

When the fixing bracket is not provided with the upright post 40, the fixing steps in the fixing step of the fixing bracket are specifically as follows: the cross beam 10 is directly fixed to the magnetic base 90 by means of the head through holes 122 and bolts (as shown in fig. 8).

Of course, in some embodiments, the fixing bracket may include the pillar 40, the beam 10 and the extension board 20, and the fixed linear variable differential transformer 80 may be directly fixed to the extension board 20 by means of the third mounting hole 22 of the extension board 20.

Preferably, in this embodiment, except for the first channel frame 11, the second channel frame 41, the bolt and the nut, the manufacturing materials of other parts are mild steel plates, and all parts are subjected to blackening or electroplating or chemical plating rust prevention treatment before assembly.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (9)

1. The utility model provides a linear variable differential transformer fixed bolster which characterized in that:

the device comprises a cross beam, an extension plate, a direction-changing plate, a first fastener and a second fastener;

the cross beam comprises a first channel frame, the first end of the extension plate is inserted into the first channel frame, and the second end of the extension plate extends out of the first channel frame: the extension plate is configured to be movable relative to the cross beam in a horizontal direction to adjust the length of the second end of the extension plate extending out of the cross beam; the first fastener is used for fixing the extension plate to the cross beam;

the second fastener is used for locking the direction-changing plate to the second end of the extension plate; the direction-changing plate has a parallel connection state parallel to the extension plate and a vertical connection state perpendicular to the extension plate; the direction changing plate is used for fixing an external linear variable differential transformer.

2. The linear variable differential transformer mounting bracket of claim 1, wherein:

the first groove-shaped frame is provided with a first mounting hole, the extension plate is provided with a second mounting hole, and the first mounting hole and/or the second mounting hole are strip-shaped holes extending along the horizontal direction.

3. The linear variable differential transformer mounting bracket of claim 2, wherein:

the second mounting hole is a long round hole, the first fastening piece is a butterfly bolt, and the first fastening piece is used for being inserted into the second mounting hole to be in threaded connection with the first groove-shaped frame.

4. The linear variable differential transformer mounting bracket of claim 3, wherein:

the first mounting hole is a through hole, a first nut is fixedly welded on the back side, away from the extension plate, of the first groove-shaped frame, and the first fastener is used for being inserted into the second mounting hole and being in threaded connection with the first nut so as to fix the extension plate to the cross beam.

5. The linear variable differential transformer mounting bracket of claim 1, wherein:

the extension plate is a strip-shaped flat plate; a third hole group is arranged at the second end of the extension plate and comprises four third mounting holes positioned on the corner points of the square; a fourth hole group is arranged on the turning plate and comprises four fourth mounting holes positioned on the angular points of the square;

the second fastener is used for penetrating through the third mounting hole and the fourth mounting hole so as to fix the direction-changing plate to the extension plate in parallel or vertically.

6. The linear variable differential transformer mounting bracket of claim 5, wherein:

the extension plate is provided with a plurality of groups of third hole groups, and the turning plate is provided with a plurality of groups of fourth hole groups.

7. The linear variable differential transformer fixing bracket as recited in any one of claims 1 to 4, wherein:

the cross beam further comprises an end head fixed at the end part of the first groove-shaped frame in the length direction, at least two end head threaded holes are formed in the end head, and at least two end head through holes are formed in the end head.

8. The linear variable differential transformer mounting bracket of claim 7, wherein:

the device also comprises a vertical column and a third fastener; the upright post comprises a second groove-shaped frame which is vertically arranged and a bottom plate which is fixed at the bottom of the second groove-shaped frame;

the second groove-shaped frame is provided with a plurality of groups of upright post mounting holes at intervals along the vertical direction, and the third fasteners are used for being inserted into the upright post mounting holes and the end head threaded holes so as to fix the cross beam on the upright posts; the bottom plate is used for being fixed in an external fixing seat so as to fix the fixing support on the external fixing seat.

9. The linear variable differential transformer mounting bracket of claim 7, wherein:

the end head through hole is used for connecting the end head with an external magnetic base.

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