CN207501855U - A kind of pipe displacement sensor - Google Patents

Abstract

The utility model is related to a kind of pipe displacement sensor, including main body and measuring staff；The measuring staff is axially slidable in the main body, and the forepart of the measuring staff is reached outside the main body, it is corresponded on the measuring staff and moving grid is fixed with by pedestal at the position in the main body, corresponded in the main body be fixed at the position above the moving grid with the corresponding fixed grid of moving grid, be equipped in the rear end of the main body by data line derived from measurement data；The top of the main body is equipped with the notch for fixing the fixed grid, fixed column is equipped on the side wall of the main body and at the position of the corresponding indentations bottom, the fixed grid is fixed to ensure that the gap between fixed grid and the moving grid reaches minimum and invariable in the top of the fixed column.The beneficial effects of the utility model are：Compared to existing moving grid and fixed grid by way of shrapnel restriction, there is no abrasions with moving grid for the fixed grid in the pipe displacement sensor, greatly extend the service life of measurer.

Description

A kind of pipe displacement sensor

Technical field

The utility model is related to measurer fields, and in particular to a kind of pipe displacement sensor.

Background technology

Pipe displacement sensor is one of most common survey tool in routine work, and operation principle is as follows：Measuring staff touches It touches workpiece to slide in main body, while measuring staff slides, moving grid (sensor main grid plate) occurs with fixed grid (sensor pair screen) Relative displacement generates displacement signal, and measurement data is obtained by displacement signal.In order to ensure measurement accuracy, between moving grid and fixed grid Gap must be constant during relative displacement, and the smaller measurement accuracy in gap between the two is higher.Therefore, pipe position Displacement sensor needs to set corresponding component to ensure the clearance constant between moving grid and fixed grid, and it also requires setting is corresponding Component come prevent measuring staff slide during deflect.

Existing pipe displacement sensor by setting shrapnel between moving grid and fixed grid, is come with the constant elastic force of shrapnel Ensure the clearance constant between moving grid and fixed grid；It sets integrally-built anti-bias piece in mounting groove in body rear bottom, The sliding slot slided for guide pin on measuring staff is equipped on anti-bias piece, guide pin slides to prevent measuring staff from deflecting along sliding slot. Above structure there are it is following the defects of:

1. moving grid is pressed in moving grid on fixed grid by increasing elastic piece structure on dynamic grid base and moves, although between making between the two Gap is eliminated, but is had friction, not only increased dynamometry but also shortened the working life；

2. processing sliding slot on integrally-built anti-bias piece, requirement on machining accuracy is higher, so as to increase manufacturing cost.

Utility model content

In conclusion in order to overcome the deficiencies of the prior art, the technical problem to be solved by the utility model is to provide one kind Pipe displacement sensor.

The technical solution that the utility model solves above-mentioned technical problem is as follows：A kind of pipe displacement sensor, including main body And measuring staff；The main body is axial horizontally disposed strip circular tube structure, and the measuring staff is axially slidable to be in the master In vivo, and the forepart of the measuring staff is reached outside the main body, is corresponded on the measuring staff and is led at the position in the main body Cross pedestal and be fixed with moving grid, corresponded in the main body be fixed at the position above the moving grid with the corresponding fixed grid of moving grid, It is equipped in the rear end of the main body by data line derived from measurement data；The top of the main body is equipped with to fix the fixed grid Notch, be equipped with fixed column, institute straight up on the side wall of the body top and at the position of the corresponding indentations bottom The fixed grid is fixed to ensure that the gap between fixed grid and the moving grid reaches minimum and invariable in the top for stating fixed column.

The beneficial effects of the utility model are：Compared to existing moving grid and fixed grid by way of shrapnel restriction, the circle There is no abrasions with moving grid for fixed grid in pipe displacement sensor, greatly extend the service life of measurer.

Based on the above technical solution, the utility model can also do following improvement：

Further, there are four the fixed columns, the indentations bottom is respectively equipped with two fixed columns per side.

Advantageous effect using above-mentioned further scheme is：Ensure the gap between fixed grid and moving grid each point reach it is minimum and It is invariable.

Further, it is horizontal on the side wall of the body rear bottom to be equipped with mounting groove, correspond to the installation on the measuring staff It is equipped with straight down at the position of slot and stretches into the guide pin in mounting groove, being equipped in the mounting groove prevents the guide pin from existing The anti-bias mechanism to deflect in the axial direction of the main body.

Further, the anti-bias mechanism includes fixed seat and needle roller；The fixed seat and the needle roller respectively there are two, two A fixed seat is separately fixed at the both ends in the mounting groove, and two needle rollers are arranged in parallel, every needle roller Both ends are separately mounted in two fixed seats, and there are gap between two needle rollers, described in which forms and supply Guide pin makees glade plane space of the straight-line displacement without deflection along the axial direction of the main body.

Advantageous effect using above-mentioned further scheme is：On the one hand, the technique that sliding slot is processed on sliding block is saved；Separately Outside, it both can guarantee into precision, and needle roller can select special material that it is made to be not easy to be directed to pin abrasion again, ensure to measure essence Degree greatly reduces the manufacture cost of product.

Further, it is horizontal on the side wall of the body front end bottom to be equipped with limiting slot, correspond to the limiting on the measuring staff It is equipped with straight down at the position of slot and stretches into the stop screw in limiting slot；Resetting spring, institute are equipped in the limiting slot The one end for stating resetting spring is connected on the inner wall of the limiting slot, and the other end connects the screw.

Advantageous effect using above-mentioned further scheme is：Measuring staff can reset to survey next time after sliding measurement once Amount, and limit by the combination of limiting slot and stop screw the maximum displacement of measuring staff prevents the components such as moving grid thereon from occurring It collides and damages.

Further, the outer cover of the main body is equipped with its closed casing.

Advantageous effect using above-mentioned further scheme is：It realizes to the closed of main body.

Description of the drawings

Fig. 1 is the explosive view of the utility model；

Fig. 2 is the utility model section view.

In attached drawing, parts list represented by the reference numerals are as follows：

1st, main body, 2, measuring staff, 3, pedestal, 4, moving grid, 5, fixed grid, 6, data line, 7, mounting groove, 8, guide pin, 9, fixed Seat, 10, needle roller, 11, fixed column, 12, limiting slot, 13, stop screw, 14, resetting spring, 15, casing.

Specific embodiment

The principle and feature of the utility model are described below in conjunction with attached drawing, example is served only for explaining this practicality It is novel, it is not intended to limit the scope of the utility model.

As illustrated in fig. 1 and 2, a kind of pipe displacement sensor, including main body 1 and measuring staff 2.The main body 1 is strip Circular tube structure, the outer cover of the main body 1 are equipped with its closed casing 15.The measuring staff 2 is axially slidable in described In main body 1, and the forepart of the measuring staff 2 is reached outside the main body 1, and the position in the main body 1 is corresponded on the measuring staff 2 The place of putting is fixed with moving grid 4 by pedestal 3, corresponds in the main body 1 and is fixed with and 4 phase of moving grid at the position of 4 top of moving grid Corresponding fixed grid 5 is equipped in the rear end of the main body 1 by data line 6 derived from measurement data.

The top of the main body 1 is equipped with the notch for fixing the fixed grid 5, on the side wall of the main body 1 and corresponding Fixed column 11 is equipped at the position of the indentations bottom, preferably：There are four the fixed columns 11, and the indentations bottom is per side It is respectively equipped with two fixed columns 11.The fixed grid 5 is fixed to ensure fixed grid 5 and the moving grid in the top of the fixed column 11 Gap between 4 reaches minimum and invariable.The mounting means of fixed column 11 is as follows：Using the position where moving grid 4 as reference, It is packed into a manner that fixed column 11 is gap-matched by special fixture in the corresponding hole of side wall of main body 1, when fixture control After plane where 11 top of fixed column processed reaches the required depth of parallelism relative to the plane where moving grid 4, and two planes After gap reaches required distance, the position of fixed column 11 is remembered and fixed by being bonded in glue injection hole, it is possible to Meet the installation requirement of fixed grid 5 and moving grid 4, i.e. the gap of the two reaches minimum and invariable.It is limited compared to existing shrapnel Fixed mode, fixed, 5 are not present abrasion with moving grid 4, greatly extend the service life of measurer.

It is horizontal on the side wall of the 1 rear end bottom of main body to be equipped with mounting groove 7, correspond to the mounting groove 7 on the measuring staff 2 It is equipped with straight down at position and stretches into the guide pin 8 in mounting groove 7, being equipped in the mounting groove 7 prevents the guide pin 8 from existing The anti-bias mechanism to deflect in the axial direction of the main body 1.The anti-bias mechanism includes fixed seat 9 and needle roller 10；The fixation Seat 9 and the needle roller 10 respectively there are two, two fixed seats 9 are separately fixed at the both ends in the mounting groove 7, each One end of the needle roller 10 is separately mounted in a fixed seat 10, and is formed described in confession between two needle rollers 10 Guide pin 8 makees glade plane space of the straight-line displacement without deflection along the axial direction of the main body 1.By existing monoblock sliding block knot Structure is decomposed into fixed seat and the assembling structure of needle roller, on the one hand, saves the technique that sliding slot is processed on sliding block；In addition, according to upper The installation of fixed column 11 is stated, is packed into the hole of fixed seat 9 in a manner that needle roller 10 is gap-matched by special fixture, when When fixture controls the position of two needle rollers 11 to meet the requirements the gap between it, remember again by being bonded in glue injection hole And the position of needle roller 10 is fixed, it both can guarantee into precision, and needle roller 10 can select special material to be not easy it again It is directed to pin 8 to wear, ensures measurement accuracy, greatly reduce the manufacture cost of product.

It is horizontal on the side wall of 1 front bottom end of main body to be equipped with limiting slot 12, correspond to the limiting slot 12 on the measuring staff 2 Position at be equipped with straight down and stretch into the stop screw 13 in limiting slot 12；Resetting spring is equipped in the limiting slot 12 14, one end of the resetting spring 14 is connected on the inner wall of the limiting slot 12, and the other end connects the screw 13.Measuring staff After 2 slip stretching resetting springs 14 measure once, it can reset to measure next time under the elastic force of resetting spring 14.Measuring staff 2 After sliding into maximum displacement, stop screw 13 thereon can reach the most end of limiting slot 12, be surveyed under the action of limiting slot 12 Bar 2 can not continue to slide, and limit the maximum displacement of measuring staff 2 by the combination of limiting slot 12 and stop screw 13, prevent thereon 4 grade components of moving grid collide and damage.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims (6)

1. a kind of pipe displacement sensor, which is characterized in that including main body (1) and measuring staff (2)；The main body (1) is axial water The strip circular tube structure of flat setting, the measuring staff (2) is axially slidable in the main body (1), and the measuring staff (2) forepart reaches the main body (1) outside, is corresponded on the measuring staff (2) and passes through pedestal at the position in the main body (1) (3) moving grid (4) is fixed with, corresponds to and is fixed at the position above the moving grid (4) with moving grid (4) relatively on the main body (1) The fixed grid (5) answered is equipped in the rear end of the main body (1) by data line derived from measurement data (6)；It is it is characterized in that, described The top of main body (1) is equipped with for the notch of fixing the fixed grid (5), on the side wall at the top of the main body (1) and corresponding institute It states and is equipped with fixed column (11) at the position of indentations bottom straight up, the fixed grid (5) is fixed at the top of the fixed column (11).

2. pipe displacement sensor according to claim 1, which is characterized in that there are four the fixed columns (11), described Indentations bottom is respectively equipped with two fixed columns (11) per side.

3. pipe displacement sensor according to claim 1, which is characterized in that the side wall of main body (1) the rear end bottom Upper level is equipped with mounting groove (7), corresponds to be equipped at the position of the mounting groove (7) on the measuring staff (2) and stretch into mounting groove (7) Guide pin (8), being equipped in the mounting groove (7) prevents the guide pin (8) from deflecting in the axial direction of the main body (1) Anti-bias mechanism.

4. pipe displacement sensor according to claim 3, which is characterized in that the anti-bias mechanism includes fixed seat (9) With needle roller (10)；The fixed seat (9) and the needle roller (10) respectively there are two, two fixed seats (9) are separately fixed at Both ends in the mounting groove (7), two needle rollers (10) are arranged in parallel, and the both ends of the every needle roller (10) are installed respectively On two fixed seats (9), and there are gap between two needle rollers (10), which, which forms, supplies the guide pin (8) make glade plane space of the straight-line displacement without deflection along the axial direction of the main body (1).

5. pipe displacement sensor according to claim 1, which is characterized in that the side wall of main body (1) front bottom end Upper level is equipped with limiting slot (12), corresponds to be equipped at the position of the limiting slot (12) on the measuring staff (2) and stretches into limiting slot (12) stop screw (13) in；It is equipped with resetting spring (14) in the limiting slot (12), the one of the resetting spring (14) End is connected on the inner wall of the limiting slot (12), and the other end connects the screw (13).

6. pipe displacement sensor according to any one of claims 1 to 4, which is characterized in that the outside of the main body (1) It is set with its closed casing (15).