Non-contact parallel displacement measuring device

Abstract

The utility model discloses a non-contact parallel displacement measuring device which comprises a displacement measuring instrument and a base, a fixed column is fixedly installed on the upper surface of the base, a movable column is arranged in the fixed column in a sliding mode, an installation column is arranged in the movable column in a sliding mode, and the displacement measuring instrument is connected to the upper surface of the installation column in a bolted mode. A synchronous assembly for driving the mounting column and the movable column to synchronously extend and retract is arranged in the fixed column; a clamping assembly used for clamping the mounting column is arranged on the outer arc surface of the moving column, and when the mounting column or the moving column is pulled, the mounting column and the moving column can synchronously extend out of the interior of the fixed column under the action of the synchronous assembly, so that the situation that the mounting column and the moving column need to be independently pulled out is avoided, and then the height adjustment efficiency of the displacement measuring instrument is improved; and the mounting column and the moving column are clamped under the action of the clamping assembly, so that the displacement measuring instrument is driven to carry out height adjustment, the height of the displacement measuring instrument is consistent with that of a measured object, and the accuracy of a measurement result is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of displacement measuring devices, in particular to a non-contact parallel displacement measuring device. Background Art

[0002] In the prior art, there are two main types of instruments for measuring displacement: contact and non-contact. Contact displacement measuring devices mainly include winding displacement meters, resistance rulers, rotary encoders, etc. Non-contact displacement measuring devices include gratings, capacitive gratings, magnetic gratings, laser length meters, etc. Contact displacement measuring devices generally have disadvantages such as poor wear resistance and low measurement accuracy. Non-contact displacement measuring devices are an extension of in-plane displacement measurement technology. They enable non-contact in-plane displacement measurement, a metrological method, to have a wider range of use environments and application objects.

[0003] At present, when a non-contact displacement measuring device is used to measure an object, a marker is first pasted on the surface of the object to be measured, and the marker is tracked by a probe. The displacement change of the probe is measured by a grating ruler in the non-contact displacement measuring device to indirectly measure the displacement or deformation of the object surface. As a one-dimensional space measuring device, the grating ruler can only measure the displacement change of the probe along the direction parallel to the grating ruler. When the height of the measured object changes, most existing displacement measuring devices do not have a height adjustment structure. If the grating ruler still maintains the original height, there will be a difference between the measurement data of the grating ruler and the actual displacement change of the probe, resulting in inaccurate measurement results. Therefore, we need to propose a non-contact parallel displacement measuring device. Summary of the invention

[0004] The purpose of the utility model is to provide a non-contact parallel displacement measuring device. When the mounting column or the movable column is pulled, the mounting column and the movable column will be synchronously extended from the inside of the fixed column under the action of the synchronization component, and the mounting column and the movable column will be clamped under the action of the clamping component, thereby driving the displacement measuring instrument to adjust the height, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a non-contact parallel displacement measuring device, comprising a displacement measuring instrument and a base, wherein a fixed column is fixedly installed on the upper surface of the base, a moving column is slidably arranged inside the fixed column, a mounting column is slidably arranged inside the moving column, and the displacement measuring instrument is bolted to the upper surface of the mounting column;

[0006] The fixed column is provided with a synchronization component inside for driving the installation column and the movable column to extend and retract synchronously;

[0007] The outer arc surface of the movable column is provided with a clamping assembly for clamping the mounting column.

[0008] Preferably, the synchronization component includes extended arc plates, push plates, gears, and toothed plates. There are two sets of the extended arc plates, gears, and toothed plates. The two sets of extended arc plates are fixedly installed on the lower surface of the moving column. The two toothed plates are symmetrically arranged on the inner wall of the fixed column. The two gears are rotatably arranged on the corresponding surfaces of the two extended arc plates, and the two gears are located on the corresponding surfaces of the two toothed plates.

[0009] Preferably, the push plate is fixedly installed on the lower surface of the mounting column, and the push plate is located between the two gears. Tooth teeth meshing with the gears are provided on the corresponding surfaces of the two toothed plates and on both sides of the push plate.

[0010] Preferably, the clamping component includes positioning columns, operating plates, support blocks, and compression springs. There are two sets of the support blocks. The two sets of support blocks are fixedly installed on the outer arc surface of the moving column. The operating plate is rotatably arranged on the corresponding surfaces of the two support blocks. The positioning column is fixedly installed on one side of the operating plate close to the mounting column.

[0011] Preferably, one end of the compression spring is fixedly connected to the outer arc surface of the moving column, and the other end of the compression spring is fixedly connected to one side of the operating plate close to the mounting column. The positioning column and the compression spring are respectively located at both ends of one side of the operating plate. A number of positioning holes corresponding to the positioning columns are provided on the outer arc surface of the mounting column.

[0012] Preferably, two connecting columns are fixedly installed on the corresponding surfaces of the two extended arc plates, and the two gears are rotatably sleeved on the outer arc surfaces of the corresponding connecting columns.

[0013] Preferably, a number of counterweight blocks are arranged inside the base, and handles are provided on the upper surfaces of the number of counterweight blocks.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] When pulling the mounting column or the moving column, the mounting column and the moving column will synchronously extend from the inside of the fixed column under the action of the synchronization component, thus avoiding the need to separately pull out the mounting column and the moving column, thereby improving the efficiency of height adjustment of the displacement measuring instrument. And under the action of the clamping component, the mounting column and the moving column are clamped, thereby driving the displacement measuring instrument to adjust the height, thus ensuring that the height of the displacement measuring instrument is consistent with the measured object, and further ensuring the accuracy of the measurement result.

[0016] Other features and advantages of the present utility model will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present utility model can be achieved and obtained by the structures pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1Schematic diagram of the contraction structure of the present utility model;

[0018] Figure 2 Schematic diagram of the extended structure of the present utility model;

[0019] Figure 3 Schematic diagram of the internal structure of the fixed column of the present utility model;

[0020] Figure 4 For the present utility model Figure 3 Schematic diagram of the structure at position A in the present utility model.

[0021] In the figure: 1, displacement measuring instrument; 2, mounting column; 3, moving column; 4, fixed column; 5, base; 6, counterweight; 7, positioning hole; 8, extended arc plate; 9, push plate; 10, gear; 11, toothed plate; 12, connecting column; 14, positioning column; 15, operation plate; 16, support block; 17, compression spring. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] The present utility model provides: a non-contact parallel displacement measuring device, as Figures 1-4 shown, including a displacement measuring instrument 1 and a base 5. A fixed column 4 is fixedly installed on the upper surface of the base 5. A moving column 3 is slidably arranged inside the fixed column 4, and a mounting column 2 is slidably arranged inside the moving column 3. The displacement measuring instrument 1 is bolted to the upper surface of the mounting column 2;

[0024] A synchronous component for driving the mounting column 2 and the moving column 3 to extend and retract synchronously is arranged inside the fixed column 4;

[0025] A clamping component for clamping the mounting column 2 is arranged on the outer arc surface of the moving column 3.

[0026] Preferably, the synchronous component includes an extended arc plate 8, a push plate 9, a gear 10, and a toothed plate 11. There are two sets of the extended arc plate 8, the gear 10, and the toothed plate 11. The two sets of extended arc plates 8 are fixedly installed on the lower surface of the moving column 3. The two sets of toothed plates 11 are symmetrically arranged on the inner wall of the fixed column 4. The two sets of gears 10 are rotatably arranged on the corresponding surfaces of the two sets of extended arc plates 8, and the two sets of gears 10 are located on the corresponding surfaces of the two sets of toothed plates 11. The two sets of extended arc plates 8 are arranged in an arc shape to avoid contact between the two sets of extended arc plates 8 and the gear 10 or the toothed plate 11, thereby ensuring the stability of the rise or fall of the two sets of extended arc plates 8.

[0027] Further, the pushing plate 9 is fixedly installed on the lower surface of the mounting column 2, and the pushing plate 9 is located between the two groups of gears 10. Tooth teeth meshing with the gears 10 are provided on the corresponding surfaces of the two groups of toothed plates 11 and on both sides of the pushing plate 9. When the mounting column 2 is pulled or the moving column 3 moves upward, the moving column 3 drives the two groups of gears 10 to rise. The two groups of gears 10 mesh with the two groups of toothed plates 11, thereby driving the two groups of gears 10. The two groups of gears 10 then drive the pushing plate 9 to rise by rotation, thereby synchronously driving the mounting column 2 to extend out of the moving column 3. Therefore, by simply pulling the mounting column 2 or the moving column 3, the mounting column 2 and the moving column 3 can be driven to rise together, thus avoiding the need to pull out the traditional multi-section telescopic rod one by one, and further improving the efficiency of height adjustment of the displacement measuring instrument 1.

[0028] Furthermore, the clamping assembly includes a positioning column 14, an operation plate 15, a support block 16 and a compression spring 17. There are two groups of support blocks 16, and the two groups of support blocks 16 are fixedly installed on the outer arc surface of the moving column 3. The operation plate 15 is rotatably arranged on the corresponding surfaces of the two groups of support blocks 16. The positioning column 14 is fixedly installed on the side of the operation plate 15 close to the mounting column 2. The two groups of operation plates 15 are rotatably arranged between the two groups of support blocks 16 through a column, so as to ensure that both ends of the operation plate 15 can be tilted and raised.

[0029] It should be noted that one end of the compression spring 17 is fixedly connected to the outer arc surface of the moving column 3, and the other end of the compression spring 17 is fixedly connected to the side of the operation plate 15 close to the mounting column 2. The positioning column 14 and the compression spring 17 are respectively located at both ends of one side of the operation plate 15. A number of positioning holes 7 corresponding to the positioning column 14 are provided on the outer arc surface of the mounting column 2. When pressing one end of the operation plate 15 close to the compression spring 17, the end of the operation plate 15 close to the positioning hole 7 is raised, so as to pull out the operation plate 15 from the inside of the positioning hole 7. When no longer pressing the operation plate 15, the operation plate 15 lowers the positioning column 14 under the action of the compression spring 17 and snaps it into the corresponding positioning hole 7. And when the positioning column 14 snaps into the positioning hole 7, the mounting column 2 and the moving column 3 are relatively fixed, thus preventing the mounting column 2 and the moving column 3 from contracting by themselves.

[0030] Specifically, two connecting columns 12 are fixedly installed on the corresponding surfaces of the two groups of extension arc plates 8, and the two groups of gears 10 are rotatably sleeved on the outer arc surfaces of the corresponding connecting columns 12. The two groups of gears 10 are fixed to the extension arc plates 8 through the two groups of connecting columns 12, so that when the extension arc plates 8 move up and down, the gears 10 will be driven to move up and down.

[0031] In addition, a number of counterweight blocks 6 are arranged inside the base 5, and handles are provided on the upper surfaces of the number of counterweight blocks 6. The number of counterweight blocks 6 is provided to increase the stability of the overall device, and the handles are provided to facilitate lifting the counterweight blocks 6 out to facilitate the handling of the overall device.

[0032] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A non-contact parallel displacement measuring device, characterized in that: The invention comprises: a displacement measuring instrument (1) and a base (5), wherein a fixed column (4) is fixedly mounted on the upper surface of the base (5), a movable column (3) is slidably arranged inside the fixed column (4), a mounting column (2) is slidably arranged inside the movable column (3), and the displacement measuring instrument (1) is bolted to the upper surface of the mounting column (2); A synchronization component is provided inside the fixed column (4) for driving the installation column (2) and the movable column (3) to extend and retract synchronously; The outer arc surface of the movable column (3) is provided with a clamping assembly for clamping the mounting column (2).

2. A non-contact parallel displacement measuring device according to claim 1, characterized in that: The synchronization component comprises an extended arc plate (8), a push plate (9), a gear (10) and a tooth plate (11), wherein the extended arc plate (8), the gear (10) and the tooth plate (11) are each provided in two groups, the two groups of the extended arc plates (8) are fixedly mounted on the lower surface of the movable column (3), the two groups of the tooth plates (11) are symmetrically arranged on the inner wall of the fixed column (4), the two groups of the gears (10) are rotatably arranged on the corresponding surfaces of the two groups of the extended arc plates (8), and the two groups of the gears (10) are located on the corresponding surfaces of the two groups of the tooth plates (11).

3. A non-contact parallel displacement measuring device according to claim 2, characterized in that: The push plate (9) is fixedly mounted on the lower surface of the mounting column (2), and the push plate (9) is located between the two sets of gears (10). The corresponding surfaces of the two sets of tooth plates (11) and both sides of the push plate (9) are provided with teeth that mesh with the gears (10).

4. A non-contact parallel displacement measuring device according to claim 3, characterized in that: The clamping assembly comprises a positioning column (14), an operating panel (15), a support block (16) and a compression spring (17); the support block (16) is provided in two groups, the two groups of support blocks (16) are fixedly mounted on the outer arc surface of the movable column (3), and the operating panel (15) is rotatably arranged on the corresponding surfaces of the two groups of support blocks (16); the positioning column (14) is fixedly mounted on a side of the operating panel (15) close to the mounting column (2).

5. A non-contact parallel displacement measuring device according to claim 4, characterized in that: One end of the compression spring (17) is fixedly connected to the outer arc surface of the movable column (3), and the other end of the compression spring (17) is fixedly connected to a side of the operating panel (15) close to the mounting column (2). The positioning column (14) and the compression spring (17) are respectively located at two ends of one side of the operating panel (15), and the outer arc surface of the mounting column (2) is provided with a plurality of groups of positioning holes (7) corresponding to the positioning columns (14).

6. A non-contact parallel displacement measuring device according to claim 2, characterized in that: Two groups of connecting columns (12) are fixedly mounted on corresponding surfaces of the two groups of extending arc plates (8), and the two groups of gears (10) are rotatably sleeved on the outer arc surfaces of the corresponding connecting columns (12).

7. The non-contact parallel displacement measuring device according to claim 1, characterized in that: A plurality of groups of counterweight blocks (6) are arranged inside the base (5), and handles are arranged on the upper surfaces of the plurality of groups of counterweight blocks (6).

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