CN218973409U

CN218973409U - Sinking displacement sensor

Info

Publication number: CN218973409U
Application number: CN202223212722.2U
Authority: CN
Inventors: 唐解华
Original assignee: Guilin Tianmu Measurement And Control Technology Co ltd
Current assignee: Guilin Tianmu Measurement And Control Technology Co ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-05-05
Anticipated expiration: 2032-12-01

Abstract

The utility model relates to a sinking displacement sensor, which comprises a main body, a measuring rod and a measuring head, wherein the upper end part of the measuring rod is provided with a groove and is movably arranged in the main body, and the lower end part of the measuring rod extends downwards out of the main body; the lower end part of the measuring rod is sleeved with a lower sleeve body, and the upper end part of the lower sleeve body is fixedly embedded into the main body; the measuring head is fixedly arranged at the lower end of the measuring rod; the upper end of the main body is provided with a fixed groove, a limiting groove communicated with the groove is arranged in the fixed groove, a reflecting grating is arranged in the groove, the reflecting grating is fixedly connected with the side wall of the groove, and the measuring rod drives the reflecting grating to limit vertical movement in the limiting groove; a circuit board is fixedly arranged in the fixed groove, and the circuit board and the reflecting grating are arranged at intervals in parallel; and the end of the circuit board close to the reflecting grating is positioned in the groove. Compared with the prior art, the utility model has the advantages of simple manufacturing process, lower cost, small volume, long-distance transmission and wider application range.

Description

Sinking displacement sensor

Technical Field

The utility model relates to the technical field of measuring tools, in particular to a sinking displacement sensor.

Background

1. The displacement sensor is a precision instrument widely applied to length measurement and is used for measuring various precision parts, and measuring the dimensional errors of the parts and the correctness of the mutual positions of the parts.

2. The traditional displacement sensor has larger volume and higher requirement on installation space, and is particularly difficult to be applied when a plurality of displacement sensors are used simultaneously. The inductance displacement sensor in the existing market has the characteristics of small volume and high precision, and has the defects of complex manufacturing process, high production cost and limited measuring range, and the measured displacement is obtained by a calculator connected through a circuit.

Disclosure of Invention

The utility model aims to provide the sinking type displacement sensor which is simple in manufacturing process, low in cost, small in size, capable of achieving the advantage of long-distance transmission and wide in application range.

The technical scheme for solving the technical problems is as follows: the sinking type displacement sensor comprises a main body, a measuring rod and a measuring head, wherein the upper end part of the measuring rod is provided with a groove, the measuring rod is movably arranged in the main body, and the lower end part of the measuring rod extends out of the main body downwards; the lower end part of the measuring rod is sleeved with a lower sleeve body, and the upper end part of the lower sleeve body is fixedly embedded into the main body; the measuring head is fixedly arranged at the lower end of the measuring rod;

the upper end of the main body is provided with a fixed groove, a limiting groove communicated with the groove is arranged in the fixed groove, a reflecting grating is arranged in the groove and fixedly connected with the side wall of the groove, and the measuring rod drives the reflecting grating to limit vertical movement in the limiting groove; a circuit board is fixedly arranged in the fixed groove, and the circuit board and the reflecting grating are arranged in parallel and at intervals; and the end part of the circuit board, which is close to the reflecting grating, is positioned in the groove.

The beneficial effects of the utility model are as follows: the reflective grating is arranged in a sinking mode, the size space of the measuring rod can be effectively utilized on the premise that the moving performance and the rigidity of the measuring rod of a product are not affected, the circuit board of the sensor is arranged near the center point of the structure to the greatest extent, and the volume can be reduced to the greatest extent; the method can also be applied to principle products such as capacitive grids, magnetic grids and the like, and has simple manufacturing process and lower cost; the displacement sensor has small volume, and the output rear end does not need to be connected with complex and expensive matched equipment; the advantages of long-distance transmission can be considered, and the application range is wider.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, a waist-shaped groove is formed in the middle of the main body corresponding to the measuring rod, a limit screw is arranged in the waist-shaped groove, the limit screw is fixedly connected with the measuring rod, and the limit screw is positioned above the lower sleeve body; the limiting screw can be limited to move vertically in the waist-shaped groove.

The beneficial effects of adopting the further scheme are as follows: limiting movement of the measuring rod is achieved through limiting movement of the limiting screw in the waist-shaped groove.

Further, a lower copper sleeve is sleeved at the lower end part of the measuring rod, and the lower copper sleeve is fixedly connected with the inner wall of the lower sleeve body; an upper copper sleeve is sleeved at the upper end part of the measuring rod and fixedly connected with the inner wall of the middle part of the main body; the upper copper sleeve is positioned below the reflecting grating.

The beneficial effects of adopting the further scheme are as follows: the upper copper sleeve and the lower copper sleeve are correspondingly arranged at the upper end part and the lower end part of the measuring rod, so that the measuring rod can stably slide in the main body and the lower sleeve body.

Further, a guide post is fixedly arranged below the measuring rod corresponding to the upper copper sleeve, the guide post is positioned at the upper end of the limit screw, one end of the main body, which is far away from the waist-shaped groove, is provided with a guide groove which is arranged in the vertical direction, and the guide post can be limited in the guide groove to move vertically; the measuring rod is sleeved with a compression spring between the guide post and the upper copper sleeve, the top of the compression spring is tightly pressed against the upper copper sleeve, and the bottom of the compression spring is tightly pressed against the guide post.

The beneficial effects of adopting the further scheme are as follows: the guide post is limited in the guide groove and can only move in the vertical direction, so that the radial deflection of the measuring rod is further limited.

Further, the measuring rod is sleeved with a compression spring between the guide post and the upper copper sleeve, the compression spring is sleeved on the measuring rod from the waist-shaped groove, the top of the compression spring is tightly pressed on the upper copper sleeve, and the bottom of the compression spring is tightly pressed on the guide post.

The beneficial effects of adopting the further scheme are as follows: utilize compression spring to stretch out and draw back between guide post and last copper sheathing, drive the measuring staff and carry out accurate reset.

Further, the upper end of the main body is provided with a sealing nut detachably connected with the main body.

Further, the top of the sleeve is in sealing connection with the sealing nut through the first sealing ring, and the sealing nut screws the sleeve, the first sealing ring and the second sealing ring with the main body.

The beneficial effects of adopting the further scheme are as follows: the sleeve is in sealing connection with the main body by using the sealing nut, the first sealing ring and the second sealing ring, so that the tightness of the instrument is ensured, and the service life is prolonged.

Drawings

FIG. 1 is a front view of a sinking displacement sensor according to the present utility model;

FIG. 2 is a schematic diagram showing an internal structure of a sinking displacement sensor according to the present utility model;

fig. 3 is a cross-sectional view of fig. 2.

In the drawings, the list of components represented by the various numbers is as follows:

1. the device comprises a main body, 101, a fixed groove, 102, a limit groove, 103, a waist-shaped groove, 104 and a guide groove;

2. a measuring rod 201 and a groove;

3. measuring head 4, lower sleeve body 5, reflecting grating 6, circuit board 7, limit screw 8, lower copper sleeve 9, upper copper sleeve, 10, guide posts, 11, compression springs, 12, sealing nuts, 13, sleeves, 14, first sealing rings, 15 and second sealing rings.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

As shown in fig. 1 to 3, a sinking displacement sensor comprises a main body 1, a measuring rod 2 and a measuring head 3, wherein a groove 201 is formed at the upper end part of the measuring rod 2, the upper end part of the measuring rod 2 is movably arranged in the main body 1, and the lower end part of the measuring rod 2 extends downwards out of the main body 1; the lower end part of the measuring rod 2 is sleeved with a lower sleeve body 4, and the upper end part of the lower sleeve body 4 is fixedly embedded into the main body 1; the measuring head 3 is fixedly arranged at the lower end of the measuring rod 2; wherein the inner diameter of the lower end part of the main body 1 is phi 8mm, and the diameter of the lower sleeve body 4 is phi 8mm;

the upper end part of the main body 1 is provided with a fixed groove 101, a limit groove 102 communicated with the groove 201 is arranged in the fixed groove 101, a reflecting grating 5 is arranged in the groove 201, the reflecting grating 5 is fixedly connected with the side wall of the groove 201, and the measuring rod 2 drives the reflecting grating 5 to limit and vertically move in the limit groove 102; a circuit board 6 is fixedly arranged in the fixed groove 101, and the circuit board 6 and the reflecting grating 5 are arranged in parallel and at intervals; and the end of the circuit board 6 close to the reflecting grating 5 is positioned in the groove 201.

In the above embodiment, the main body 1 is provided with a waist-shaped groove 103 corresponding to the middle part of the measuring rod 2, a limit screw 7 is arranged in the waist-shaped groove 103, the limit screw 7 is fixedly connected with the measuring rod 2, and the limit screw 7 is positioned above the lower sleeve body 4; the limit screw 7 can be limited to vertically move in the waist-shaped groove 103.

In the above embodiment, the lower end portion of the measuring rod 2 is sleeved with a lower copper sleeve 8, and the lower copper sleeve 8 is fixedly connected with the inner wall of the lower sleeve body 4; an upper copper sleeve 9 is sleeved at the upper end part of the measuring rod 2, and the upper copper sleeve 9 is fixedly connected with the inner wall of the middle part of the main body 1; the upper copper sleeve 9 is positioned below the reflecting grating 5, wherein the aperture of the lower copper sleeve 8 is phi 5.01mm; the aperture of the upper copper bush 9 is phi 5.01mm; the diameter of the measuring rod 2 is phi 5mm.

In the above embodiment, the guide post 10 is fixedly disposed under the upper copper bush 9 corresponding to the measuring rod 2, the guide post 10 is disposed at the upper end of the limit screw 7, one end of the main body 1, which is far away from the waist-shaped slot 103, is provided with a guide slot 104 disposed in a vertical direction, and the guide post 10 can be limited and vertically moved in the guide slot 104; the measuring rod 2 is sleeved with a compression spring 11 between the guide post 10 and the upper copper sleeve 9, the compression spring 11 is sleeved on the measuring rod 2 from the waist-shaped groove 103, the top of the compression spring 11 is tightly pressed on the upper copper sleeve 9, and the bottom of the compression spring 11 is tightly pressed on the guide post 10.

In the above embodiment, the upper end of the main body 1 is provided with a sealing nut 12 detachably connected thereto.

In the above embodiment, the main body 1 is fixedly sleeved with the sleeve 13, the bottom of the sleeve 13 is in sealing connection with the lower end of the main body 1 through the second sealing ring 15, the top of the sleeve 13 is in sealing connection with the sealing nut 12 through the first sealing ring 14, and the sealing nut 12 screws the sleeve 13, the first sealing ring 14 and the second sealing ring 15 with the main body 1.

In this embodiment, when measuring displacement, the measuring head 3 is pressed to drive the upper end of the measuring rod 2 to move vertically in the main body 1, in this process, the limit screw 7 limits the vertical movement in the waist-shaped groove 103, the measuring rod 2 drives the reflecting grating 5 to move vertically and limitedly on one side of the circuit board 6, the circuit board 6 obtains the displacement information of the reflecting grating 5 to obtain a measured displacement digital quantity, and the displacement digital quantity can be transmitted to a display or a computer in a wired or wireless mode; after the measurement is completed, the compression spring 11 drives the measuring rod 2 and the reflecting grating 5 to reset.

In this embodiment, the reflective grating 5 is disposed in the groove 201, and the end surface of the circuit board 6 close to the reflective grating 5 is located in the groove 201, and the end portion of the circuit board 6 close to the reflective grating 5 is located in the groove 201, so that the size space of the measuring rod 2 can be effectively utilized, the circuit board 6 of the sensor is maximally close to the central point of the sensor structure, and the volume of the sensor can be maximally reduced.

The displacement sensor in the embodiment adopts the reflecting grating 5 to acquire displacement information, so that the cost of the displacement sensor can be effectively reduced; the method can also be applied to principle products such as capacitive grids, magnetic grids and the like, and has simple manufacturing process and lower cost; the displacement sensor has small volume, and the output rear end does not need to be connected with complex and expensive matched equipment; the advantages of long-distance transmission can be considered, and the application range is wider.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. A sinking displacement sensor, characterized in that: the measuring rod comprises a main body (1), a measuring rod (2) and a measuring head (3), wherein a groove (201) is formed in the upper end part of the measuring rod (2), the upper end part of the measuring rod (2) is movably arranged in the main body (1), and the lower end part of the measuring rod (2) extends downwards out of the main body (1); the lower end part of the measuring rod (2) is sleeved with a lower sleeve body (4), and the upper end part of the lower sleeve body (4) is fixedly embedded into the main body (1); the measuring head (3) is fixedly arranged at the lower end of the measuring rod (2);

the upper end part of the main body (1) is provided with a fixed groove (101), a limit groove (102) communicated with the groove (201) is arranged in the fixed groove (101), a reflecting grating (5) is arranged in the groove (201), the reflecting grating (5) is fixedly connected with the side wall of the groove (201), and the measuring rod (2) drives the reflecting grating (5) to move vertically in the limit groove (102) in a limit mode; a circuit board (6) is fixedly arranged in the fixing groove (101), and the circuit board (6) and the reflecting grating (5) are arranged at intervals in parallel; and the end part of the circuit board (6) close to the reflecting grating (5) is positioned in the groove (201).

2. The submersible displacement sensor according to claim 1, wherein: the middle part of the main body (1) corresponding to the measuring rod (2) is provided with a waist-shaped groove (103), a limit screw (7) is arranged in the waist-shaped groove (103), the limit screw (7) is fixedly connected with the measuring rod (2), and the limit screw (7) is positioned above the lower sleeve body (4); the limiting screw (7) can be limited to move vertically in the waist-shaped groove (103).

3. The submersible displacement sensor according to claim 2, wherein: the lower end part of the measuring rod (2) is sleeved with a lower copper sleeve (8), and the lower copper sleeve (8) is fixedly connected with the inner wall of the lower sleeve body (4); an upper copper sleeve (9) is sleeved at the upper end part of the measuring rod (2), and the upper copper sleeve (9) is fixedly connected with the inner wall of the middle part of the main body (1); the upper copper sleeve (9) is arranged below the reflecting grating (5).

4. A submersible displacement sensor according to claim 3, wherein: the measuring rod (2) is fixedly provided with a guide post (10) corresponding to the lower part of the upper copper sleeve (9), the guide post (10) is positioned at the upper end of the limit screw (7), one end of the main body (1) away from the waist-shaped groove (103) is provided with a guide groove (104) which is arranged in the vertical direction, and the guide post (10) can be limited in the guide groove (104) to move vertically; the measuring rod (2) is sleeved with a compression spring (11) between the guide post (10) and the upper copper sleeve (9), the top of the compression spring (11) is tightly pressed against the upper copper sleeve (9), and the bottom of the compression spring (11) is tightly pressed against the guide post (10).

5. The submersible displacement sensor according to any one of claims 1 to 4, wherein: the upper end of the main body (1) is provided with a sealing nut (12) which is detachably connected with the main body.

6. The submersible displacement sensor according to claim 5, wherein: the sleeve (13) is fixedly sleeved on the main body (1), the bottom of the sleeve (13) is in sealing connection with the lower end part of the main body (1) through the second sealing ring (15), the top of the sleeve (13) is in sealing connection with the sealing nut (12) through the first sealing ring (14), and the sealing nut (12) screws the sleeve (13), the first sealing ring (14) and the second sealing ring (15) with the main body (1).