CN216051059U - Contact rigidity measurement experimental device with different joint surface forms - Google Patents
Contact rigidity measurement experimental device with different joint surface forms Download PDFInfo
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- CN216051059U CN216051059U CN202121064958.9U CN202121064958U CN216051059U CN 216051059 U CN216051059 U CN 216051059U CN 202121064958 U CN202121064958 U CN 202121064958U CN 216051059 U CN216051059 U CN 216051059U
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- 238000005259 measurement Methods 0.000 title claims abstract description 19
- 238000012360 testing method Methods 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 238000002474 experimental method Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
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Abstract
The utility model relates to a contact rigidity measurement experimental device with different joint surface forms, which comprises a plurality of bases, wherein guide pillars extending vertically are fixedly arranged on the bases, movable cross beams are sleeved outside the guide pillars and driven by first lead screws arranged outside the guide pillars in parallel to move up and down along guide rails, a base plate is arranged between the bases and driven by second lead screws extending horizontally to move horizontally, a fixed sleeve is fixedly arranged on the base plate, a guide block is coaxially and slidably connected in the fixed sleeve, the lower end of the guide block is fixedly connected with a normal force application bolt which penetrates through the base plate from bottom to top in a screwed manner, a lower test piece is further slidably connected in the fixed sleeve, the lower test piece is arranged above the guide block, a pressure sensor is arranged between the lower test piece and the guide block, an upper test piece is clamped and fixed on the movable cross beams through a clamping mechanism, and the rigidity measurement experimental device is simple in structure and convenient to adjust and calibrate.
Description
Technical Field
The utility model relates to a contact rigidity measurement experimental device with different joint surface forms.
Background
At present, the joint surface form selected for the contact rigidity measurement experiment is single, and most of the joint surfaces are in contact with two planes. However, in actual life and production, the form of the joint surface is various, and adjustment and calibration are inconvenient, and the measurement accuracy is insufficient.
SUMMERY OF THE UTILITY MODEL
In view of the defects of the prior art, the utility model aims to provide the contact rigidity measurement experiment device with different joint surface forms, which has the advantages of simple and reasonable structure, convenient adjustment and calibration and accurate measurement.
In order to solve the technical problems, the technical scheme of the utility model is as follows: contact rigidity measurement experimental apparatus of different faying face forms, including a plurality of bases, all set firmly the guide pillar of vertical extension on the base, the guide pillar overcoat is equipped with movable cross beam, and this movable cross beam reciprocates along the guide rail through the drive of the first lead screw of parallel locating outside the guide pillar, is equipped with the bottom plate between the base, and this bottom plate drives horizontal migration through the second lead screw of horizontal extension, set firmly fixed cover on the bottom plate, coaxial sliding connection has the guide block in the fixed cover, and the guide block lower extreme links firmly with the normal direction application of force bolt that passes the bottom plate from lower up spiro union, and still sliding connection lower test piece in the fixed cover, lower test piece lie in the guide block top and between the two pad be equipped with pressure sensor, it is fixed with the test piece on the movable cross beam to press from both sides through clamping mechanism.
Furthermore, an eddy current displacement sensor is arranged on the lower test piece.
Further, the lower end of the base is fixedly connected to the workbench, and the upper ends of the guide pillars are fixedly connected to the same cross beam.
Furthermore, the second screw rod extends transversely and is fixed between the left base and the right base, and the bottom plate is driven to move transversely left and right through the rotation of the second screw rod.
Furthermore, the fixed sleeve is fixedly connected to the bottom plate through a bolt, a sliding hole is vertically communicated with the center of the guide sleeve, and the guide block and the lower test piece are driven to slide up and down in the sliding hole through an adjusting normal force application bolt.
Further, the movable cross beam comprises a first movable cross beam and a second movable cross beam which are parallel up and down, the clamping mechanism is installed between the first movable cross beam and the second movable cross beam and comprises two connecting rods, the upper ends of the connecting rods are hinged in the first movable cross beam respectively, the lower ends of the two connecting rods are hinged with clamping arms respectively, springs extending horizontally are connected between the two hinged points, the two clamping arms are arranged in a crossed mode and hinged at the crossed positions, clamping blocks are connected to the lower ends of the connecting rods, a vertical abdicating port for installing a test piece is formed in the second movable cross beam, the two clamping blocks are located in the abdicating port, the test piece is clamped between the two clamping blocks, and a handle is fixedly arranged on the clamping arms.
Compared with the prior art, the utility model has the following beneficial effects: the device can measure the contact rigidity of the experimental test piece in contact with different joint surface forms, is used in pairs, solves the problem of single joint surface form, fully considers the contact modes of other different joint surface forms, measures the load and displacement deformation in the experimental process through the sensor, calculates the value of the contact rigidity, and is accurate in measurement and simple to realize.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic configuration diagram of an embodiment of the present invention;
fig. 2 is a schematic diagram of an embodiment of the present invention.
In the figure: 1-base, 2-guide post, 3-movable cross beam, 4-first lead screw, 5-bottom plate, 6-second lead screw, 7-fixing sleeve, 8-guide block, 9-normal force application bolt, 10-lower test piece, 11-pressure sensor, 12-clamping mechanism, 13-upper test piece, 14-eddy current displacement sensor, 15-workbench, 16-cross beam, 17-bolt, 18-slide hole, 19-first movable cross beam, 20-second movable cross beam, 21-connecting rod, 22-clamping arm, 23-spring, 24-clamping block, 25-relief opening and 26-handle.
Detailed Description
In order to make the aforementioned and other features and advantages of the utility model more comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1-2, the experimental apparatus for measuring contact rigidity of different joint surface forms includes a plurality of bases 1, guide pillars 2 extending vertically are fixed on the bases, a movable cross beam 3 is sleeved outside the guide pillars and driven by a first lead screw 4 arranged outside the guide pillars in parallel to move up and down along the guide rails, a bottom plate 5 is arranged between the bases and driven by a second lead screw 6 extending horizontally to move horizontally, a fixed sleeve 7 is fixed on the bottom plate, a guide block 8 is coaxially and slidably connected in the fixed sleeve, the lower end of the guide block is fixedly connected with a normal force application bolt 9 threaded through the bottom plate from bottom to top, a lower test piece 10 is further slidably connected in the fixed sleeve, a pressure sensor 11 is arranged above the guide block and between the lower test piece and the guide block, and an upper test piece 13 is clamped and fixed on the movable cross beam by a clamping mechanism 12.
In the embodiment of the utility model, the lower test piece is provided with the eddy current displacement sensor 14, the data of uniformly acquired force and deformation are measured by the pressure sensor and the eddy current displacement sensor, and the average value of the data of 2 eddy current sensors is taken as the final measured displacement. After the experiment of one group of joint surface forms is finished, replacing the test piece of the next group of joint surface forms, and repeating the steps to obtain the measurement data of a plurality of groups of joint surfaces with different joint surface forms.
In the embodiment of the utility model, the lower ends of the bases are fixedly connected to the workbench 15, and the upper ends of the guide columns are fixedly connected to the same cross beam 16.
In the embodiment of the utility model, the second lead screw extends transversely and is fixed between the left base and the right base, the bottom plate can be fixedly connected to a lead screw nut of the second lead screw and drives the bottom plate to move transversely left and right through the rotation of the second lead screw, and the first lead screw drives the first movable cross beam and the second movable cross beam to synchronously lift.
In the embodiment of the utility model, the fixed sleeve is fixedly connected on the bottom plate through a bolt 17, a sliding hole 18 is vertically penetrated in the center of the guide sleeve, and the guide block and the lower test piece are driven to slide up and down in the sliding hole by adjusting a normal force application bolt.
In the embodiment of the utility model, the movable cross beam comprises a first movable cross beam 19 and a second movable cross beam 20 which are parallel up and down, the clamping mechanism is installed between the first movable cross beam and the second movable cross beam, the clamping mechanism comprises two connecting rods 21, the upper ends of the connecting rods are respectively hinged in the first movable cross beam, the lower ends of the two connecting rods are respectively hinged with a clamping arm 22, a horizontally extending spring 23 is connected between the two hinged points, the two clamping arms are arranged in a crossed manner and hinged at the crossed position, the lower ends of the connecting rods are both connected with clamping blocks 24, the second movable cross beam is vertically provided with a abdicating port 25 for installing an upper test piece, the two clamping blocks are both positioned in the abdicating port, the upper test piece is clamped between the two clamping blocks, and a handle 26 is fixedly arranged on the clamping arm.
The working principle of the embodiment of the utility model is as follows: firstly, pulling a handle, rotating two clamping arms around a hinged point to enable a clamping block to open and clamp an upper test piece, wherein the distance between a first movable cross beam and a second movable cross beam is fixed, at the moment, a spring stretches, the handle is loosened after clamping, and the upper test piece is clamped through spring resetting; the bottom plate and the lower test piece are driven by the second lead screw to transversely move left and right to the same vertical position as the upper test piece, then the movable cross beam is driven by the first lead screw to synchronously rotate to move downwards to be in contact with the upper test piece and the lower test piece, and finally the bottom of the lower test piece is uniformly loaded by the normal force application bolt.
The pressure between the joint surfaces and the deformation of the test piece are respectively measured by a pressure sensor and an eddy current displacement sensor, and the measured normal deformation displacement delta is obtainedtestThe device mainly comprises two parts: deformation delta m generated by pressing of middle matrixes of two test pieces and normal deformation delta of joint surface formed by contactnWherein δmThe required normal deformation displacement of the joint surface can be calculated according to the relevant theory in the material mechanics, and the data post-processing is carried out to obtain the pressure of the joint surface of each group of test pieces-a displacement curve, whereby the normal contact stiffness between the faying surfaces is determined.
The present invention is not limited to the above-mentioned preferred embodiments, and any one can derive other contact rigidity measurement experimental devices in various forms of different joint surfaces according to the teaching of the present invention. All equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121064958.9U CN216051059U (en) | 2021-05-18 | 2021-05-18 | Contact rigidity measurement experimental device with different joint surface forms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121064958.9U CN216051059U (en) | 2021-05-18 | 2021-05-18 | Contact rigidity measurement experimental device with different joint surface forms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216051059U true CN216051059U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121064958.9U Expired - Fee Related CN216051059U (en) | 2021-05-18 | 2021-05-18 | Contact rigidity measurement experimental device with different joint surface forms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216051059U (en) |
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2021
- 2021-05-18 CN CN202121064958.9U patent/CN216051059U/en not_active Expired - Fee Related
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Granted publication date: 20220315 |
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| CF01 | Termination of patent right due to non-payment of annual fee |