CN219798999U - Four-point bending clamp capable of automatically adjusting balance - Google Patents
Four-point bending clamp capable of automatically adjusting balance Download PDFInfo
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- CN219798999U CN219798999U CN202320847338.5U CN202320847338U CN219798999U CN 219798999 U CN219798999 U CN 219798999U CN 202320847338 U CN202320847338 U CN 202320847338U CN 219798999 U CN219798999 U CN 219798999U
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- telescopic
- point bending
- plate
- automatically adjusting
- fixedly connected
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- 238000013001 point bending Methods 0.000 title claims abstract description 18
- 238000005452 bending Methods 0.000 claims abstract description 30
- 238000004140 cleaning Methods 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000013519 translation Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000010405 clearance mechanism Effects 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 238000002474 experimental method Methods 0.000 abstract description 5
- 238000003754 machining Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses an automatic balance adjusting four-point bending clamp which comprises a processing bottom plate and a bending die, wherein a fixing base is arranged at the top of the processing bottom plate, the bending die is arranged at the top of the fixing base, a processing frame is arranged above the fixing base, and a fisheye bearing is fixedly connected to the processing frame. According to the scheme, the fisheye bearing is used as a connecting rod to automatically adjust and center, so that the upper two fulcrums are uniformly stressed, strain data in an experiment are collected by the strain gauge, a sample is rotated 180 degrees and measured twice, the ratio of the strain data is about one percent, the precision in the four-point bending experiment process is improved, the accuracy of the experiment data is improved, and the cleaning roller can be abutted against the inclined plane of the transmission block in the downward moving process of the top block, so that the cleaning roller can scrape the surface of a sample piece, the error caused by sundries on the surface of the sample piece to the load of the contact surface is prevented, and the accuracy of the realization data is improved.
Description
Technical Field
The utility model relates to the technical field of bending clamps. In particular to a four-point bending clamp capable of automatically adjusting balance.
Background
At present, four-point bending test fixtures are all fixed, and after abrasion, only one point position of the upper two point positions can be in contact with a sample, and one end of the four-point bending test fixture is in virtual connection, so that the problem that the four-point bending test fixture always fails at one end is solved.
In order to solve the problem of errors caused by abrasion or machining in the using process of the traditional clamp, the left and right contact is uneven when the upper pressing roller applies load, so that the applied load has a large error, a sample always breaks along one end, and a new solution is provided.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to provide a four-point bending clamp capable of reducing the applied load error and automatically adjusting balance.
In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides an automatic balanced four-point bending fixture of regulation, includes processing bottom plate and bending die utensil, the top of processing bottom plate is equipped with unable adjustment base, bending die utensil sets up at unable adjustment base's top, unable adjustment base's top is equipped with the processing frame, fixedly connected with fisheye bearing on the processing frame, the bottom of fisheye bearing is equipped with the horizon bar, be equipped with two kicking blocks on the horizon bar, be equipped with the recess on the bending die utensil, the interior bottom of recess is equipped with the foil gage, bending die utensil's top is equipped with the sample wafer, bending die utensil's front side is equipped with two clearance mechanisms.
Preferably, the groove is formed in the middle of the top of the bending die, and the bending die is arranged in a U-shaped mode.
Preferably, the two top blocks are located right above the bending die and correspond to the positions of the grooves.
Preferably, the removing mechanism comprises a mounting frame fixedly connected to the outer side wall of the bending die, a translation rod is slidably connected to the mounting frame, a first expansion plate and an expansion rod are fixedly connected to the translation rod, an expansion groove is formed in the first expansion plate, and a second expansion plate is slidably connected to the inner side wall of the expansion groove.
Preferably, a first spring is arranged between the second expansion plate and the inner bottom of the expansion groove, a cleaning roller is connected to the expansion rod, a transmission rod is arranged between the cleaning roller and the second expansion plate, and two ends of the transmission rod are respectively connected with the second expansion plate and the cleaning roller in a rotating mode.
Preferably, the telescopic shaft is slidably connected to the second telescopic plate, the transmission block is fixedly connected to the telescopic shaft, one end, far away from the second telescopic plate, of the transmission block is arranged in an inclined plane, the outer side wall of the telescopic shaft is sleeved with the second spring, and two ends of the second spring are fixedly connected with the transmission block and the second telescopic plate respectively.
The technical scheme of the utility model has the following beneficial technical effects:
1. the fisheye bearing is used as a connecting rod in the scheme to automatically adjust and center, so that the upper two fulcrums can be uniformly stressed, strain data in an experiment are collected by the strain gauge, the sample is rotated 180 degrees and measured twice, the ratio of the strain data is about one percent, the precision in the four-point bending experiment process is improved, and the accuracy of the experimental data is improved.
2. According to the scheme, the cleaning roller can offset with the inclined plane of the transmission block in the process of downward movement of the top block, so that the cleaning roller can scrape the surface of the sample wafer, errors caused by sundries on the surface of the sample wafer to the load of the contact surface are prevented, and the accuracy of data is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic view of the structure of the first expansion board in the present utility model;
fig. 4 is a schematic view of the position between the fish-eye bearing and the horizontal bar.
The reference numerals in the drawings are as follows: 1-machining a bottom plate; 2-fixing a base; 3-bending the die; 4-a processing frame; 5-fish-eye bearings; 6-a top block; 7-horizontal bars; 8-sample piece; 9-strain gauge; 10-mounting frame; 11-a first expansion plate; 12-a second expansion plate; 13-cleaning rollers; 14-a transmission block; 15-a transmission rod; 16-a second spring.
Detailed Description
Referring to fig. 1-4, an automatic balance adjusting four-point bending fixture comprises a machining bottom plate 1 and a bending die 3, wherein a fixed base 2 is arranged at the top of the machining bottom plate 1, the bending die 3 is arranged at the top of the fixed base 2, a machining frame 4 is arranged above the fixed base 2, a fisheye bearing 5 is fixedly connected to the machining frame 4, a horizontal rod 7 is arranged at the bottom of the fisheye bearing 5, two jacking blocks 6 are arranged on the horizontal rod 7, a compression roller is arranged at the bottom end of the jacking blocks 6, load is applied to a sample wafer 8 through the compression roller, the two jacking blocks 6 are positioned right above the bending die 3 and correspond to the position of the groove, the groove is arranged on the bending die 3 and is arranged in the middle of the top of the bending die 3, and the bending die 3 is arranged in a U-shaped mode;
the inner bottom of the groove is provided with a strain gauge 9, the top of the bending die 3 is provided with a sample sheet 8, the front side of the bending die 3 is provided with two cleaning mechanisms, each cleaning mechanism comprises a mounting frame 10 fixedly connected to the outer side wall of the bending die 3, a translation rod is slidably connected to the mounting frame 10, a first expansion plate 11 and a telescopic rod are fixedly connected to the translation rod, a telescopic groove is formed in the first expansion plate 11, the inner side wall of the telescopic groove is slidably connected with a second expansion plate 12, a first spring is arranged between the second expansion plate 12 and the inner bottom of the telescopic groove, and a cleaning roller 13 is connected to the telescopic rod;
be equipped with transfer line 15 between cleaning roller 13 and the second expansion plate 12, rotate between transfer line 15's both ends respectively and second expansion plate 12 and the cleaning roller 13 and be connected, sliding connection has the telescopic shaft on the second expansion plate 12, fixedly connected with transmission piece 14 on the telescopic shaft, and the one end that transmission piece 14 kept away from second expansion plate 12 is the inclined plane setting, and the telescopic shaft lateral wall cover is equipped with second spring 16, and the both ends of second spring 16 are respectively with fixed connection between transmission piece 14 and the second expansion plate 12.
The operation flow of the scheme is as follows: the initial position of the first expansion plate 11 is positioned above the bending die 3 and is not contacted with the bending die 3, so that the sample piece 8 can be conveniently placed, and the width of the bending die 3 is larger than that of the sample piece 8, so that the first expansion plate 11 can be prevented from propping against the sample piece 8 in the process of moving downwards;
then the horizontal rod 7 is controlled to move downwards, the two top blocks 6 move downwards, the inclined surfaces of the transmission blocks 14 are propped against in the process of moving downwards the top blocks 6, the first expansion plate 11 is driven to move downwards, the first expansion plate 11 is propped against the top end of the bending die 3, the first springs are compressed, the cleaning roller 13 can scrape the processing part of the sample sheet 8, the impurities on the surface of the cleaning roller can be prevented from affecting the load data, the elastic coefficient of the second springs 16 is larger than that of the first springs, the whole of the first expansion plate 11 and the second expansion plate 12 move downwards firstly,
it is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While the obvious variations or modifications which are extended therefrom remain within the scope of the claims of this patent application.
Claims (6)
1. The utility model provides an automatic balanced four-point bending fixture of regulation, includes processing bottom plate (1) and buckles mould (3), its characterized in that, the top of processing bottom plate (1) is equipped with unable adjustment base (2), buckle mould (3) and set up the top at unable adjustment base (2), the top of unable adjustment base (2) is equipped with processing frame (4), fixedly connected with fisheye bearing (5) on processing frame (4), the bottom of fisheye bearing (5) is equipped with horizon bar (7), be equipped with two kicking blocks (6) on horizon bar (7), be equipped with the recess on buckling mould (3), the interior bottom of recess is equipped with foil gage (9), the top of buckling mould (3) is equipped with sample wafer (8), the front side of buckling mould (3) is equipped with two clearance mechanisms.
2. The four-point bending clamp capable of automatically adjusting balance according to claim 1, wherein the groove is formed in the middle of the top of the bending die (3), and the bending die (3) is arranged in a U-shaped mode.
3. The four-point bending fixture for automatically adjusting balance according to claim 1, wherein two top blocks (6) are positioned right above the bending die (3) and correspond to the positions of the grooves.
4. The four-point bending clamp capable of automatically adjusting balance according to claim 1, wherein the cleaning mechanism comprises a mounting frame (10) fixedly connected to the outer side wall of the bending die (3), a translation rod is slidably connected to the mounting frame (10), a first expansion plate (11) and an expansion rod are fixedly connected to the translation rod, an expansion groove is formed in the first expansion plate (11), and a second expansion plate (12) is slidably connected to the inner side wall of the expansion groove.
5. The four-point bending clamp capable of automatically adjusting balance according to claim 4, wherein a first spring is arranged between the second telescopic plate (12) and the inner bottom of the telescopic groove, a cleaning roller (13) is connected to the telescopic rod, a transmission rod (15) is arranged between the cleaning roller (13) and the second telescopic plate (12), and two ends of the transmission rod (15) are respectively connected with the second telescopic plate (12) and the cleaning roller (13) in a rotating mode.
6. The four-point bending clamp capable of automatically adjusting balance according to claim 5, wherein the second telescopic plate (12) is slidably connected with a telescopic shaft, a transmission block (14) is fixedly connected to the telescopic shaft, one end, far away from the second telescopic plate (12), of the transmission block (14) is arranged in an inclined plane, a second spring (16) is sleeved on the outer side wall of the telescopic shaft, and two ends of the second spring (16) are fixedly connected with the transmission block (14) and the second telescopic plate (12) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320847338.5U CN219798999U (en) | 2023-04-17 | 2023-04-17 | Four-point bending clamp capable of automatically adjusting balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320847338.5U CN219798999U (en) | 2023-04-17 | 2023-04-17 | Four-point bending clamp capable of automatically adjusting balance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219798999U true CN219798999U (en) | 2023-10-03 |
Family
ID=88180672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320847338.5U Active CN219798999U (en) | 2023-04-17 | 2023-04-17 | Four-point bending clamp capable of automatically adjusting balance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219798999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117451535A (en) * | 2023-12-21 | 2024-01-26 | 深圳市旭仓科技有限公司 | Concrete quality detection device for hydraulic engineering |
-
2023
- 2023-04-17 CN CN202320847338.5U patent/CN219798999U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117451535A (en) * | 2023-12-21 | 2024-01-26 | 深圳市旭仓科技有限公司 | Concrete quality detection device for hydraulic engineering |
| CN117451535B (en) * | 2023-12-21 | 2024-03-08 | 深圳市旭仓科技有限公司 | Concrete quality detection device for hydraulic engineering |
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