CN214121890U - Hardness measuring device - Google Patents
Hardness measuring device Download PDFInfo
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- CN214121890U CN214121890U CN202022795586.9U CN202022795586U CN214121890U CN 214121890 U CN214121890 U CN 214121890U CN 202022795586 U CN202022795586 U CN 202022795586U CN 214121890 U CN214121890 U CN 214121890U
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Abstract
The utility model relates to the technical field of hardness measurement, in particular to a hardness measuring device, wherein a tucking needle is connected inside a sliding sleeve in a sliding way; the workbench is arranged right below the pressing needle; a support table and a support rod fixing table are fixed inside the frame; a lifting device is fixed on the supporting platform; one end of the big lever is hinged with the frame; the other end of the big lever is fixed with a hanging ring; the rod body of the large lever is hinged with the top end of the pressing needle; one end of the supporting rod is hinged with the supporting rod fixing table; the other end of the supporting rod extends into the hanging ring; the output end of the lifting device is hinged with the rod body of the supporting rod; the pull rod is connected and fixed on the hanging ring; weights are fixed on the pull rod. Use the utility model discloses the time, need not to rely on the telescoping device of high accuracy, the pressure of every side measurement all has the weight of fixed weight to confirm, very big limit ground improves the measuring precision.
Description
Technical Field
The utility model relates to a hardness measurement technical field, in particular to hardness measurement device.
Background
When a traditional Brinell hardness tester and a traditional Rockwell hardness tester are used for measuring hardness, a certain force needs to be applied to a measured piece to measure the hardness, two force loading modes are usually adopted, and one mode is to use an alternating current motor to drive a large lever to load and unload a weight; the other method is to utilize a servo motor and a high-precision force sensor to carry out motor loading force and unloading force, and adjust the loading force in real time through the feedback of the force sensor so as to achieve the force required by the hardness test.
The first is that the weight is loaded and unloaded by using the structures such as the alternating current motor, the cam, the pull rod, the travel switch and the like, the force value loading of the method is stable and simple, but when the weight is loaded and unloaded, the position positioning needs to be carried out by using elements such as a photoelectric switch or a Hall switch and the like, the installation and debugging of the pull rod and the cam are needed, and the whole production, assembly and debugging are complicated.
Secondly, the force loading mode of the servo motor is to adjust the force of the hardness test through the feedback of the servo motor and the high-precision force sensor, the structure of the method omits the production and the assembly of weights, structural members such as a pull rod and the like, the whole structure is simpler, but the method requires a very accurate force control system, has very high requirements on software and hardware of the control system and the precision of the force sensor, and has higher whole production cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hardness measuring device to prior art's defect and not enough.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model relates to a hardness measuring device, which comprises a frame, a pull rod, a big lever, a support rod, a sliding sleeve fixed on the frame and a workbench; the inside of the sliding sleeve is connected with a pressing needle in a sliding manner; the workbench is arranged right below the pressing needle; a supporting table and a supporting rod fixing table are fixed inside the rack; a lifting device is fixed on the supporting platform; one end of the big lever is hinged with the frame; the other end of the big lever is fixed with a hanging ring; the rod body of the large lever is hinged with the top end of the pressing needle; one end of the supporting rod is hinged with the supporting rod fixing table; the other end of the supporting rod extends into the hanging ring; the output end of the lifting device is hinged with the rod body of the supporting rod; the pull rod is fixedly connected to the lifting ring; weights are fixed on the pull rod.
Furthermore, a hook is fixed on the pull rod; the hook is hung on the hanging ring.
Further, the lifting device is an electric push rod; one end of the electric push rod is fixedly connected with the support platform; the other end of the electric push rod is hinged with the rod body of the supporting rod.
After the structure is adopted, the utility model discloses beneficial effect does: in the hardness measuring device of the utility model, the inside of the sliding sleeve is connected with the pressing pin in a sliding way; the workbench is arranged right below the pressing needle; a support table and a support rod fixing table are fixed inside the frame; a lifting device is fixed on the supporting platform; one end of the big lever is hinged with the frame; the other end of the big lever is fixed with a hanging ring; the rod body of the large lever is hinged with the top end of the pressing needle; one end of the supporting rod is hinged with the supporting rod fixing table; the other end of the supporting rod extends into the hanging ring; the output end of the lifting device is hinged with the rod body of the supporting rod; the pull rod is connected and fixed on the hanging ring; weights are fixed on the pull rod. When the utility model is used, weights are loaded on the pull rod according to the measurement requirement, the lifting device can drive the support rod to swing, and the limit switch is arranged in the lifting device, so that the stroke of the lifting device can be controlled; after the lifting device rises, the supporting rod swings to overcome the gravity of the weight and supports the large lever to rotate anticlockwise, so that the pressing pin is lifted for a certain distance; the lifting device descends, the supporting rod descends in the hanging ring until the supporting rod is not in contact with the hanging ring, and the large lever presses the pressing pin downwards to perform hardness testing under the action of the gravity of the weight; the pull rod is fixed on the hanging ring; a measured sample is placed on the surface of the workbench, and the pressing pin is lifted through the swinging of the large lever; when the large lever swings clockwise, the pressing pin slides downwards in the sliding sleeve and applies pressure to the sample for testing; after the test is finished, when the large lever swings anticlockwise, the pressing pin is pulled upwards; the high-precision telescopic device is not needed, the pressure measured at each side is determined by the weight with fixed weight, and the measuring precision is improved to the maximum extent.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
description of reference numerals:
1. a frame; 2. a support table; 3. a weight; 4. a pull rod; 5. a lifting device; 6. hooking;
7. a hoisting ring; 8. a large lever; 9. a support bar; 10. a support rod fixing table; 11. a sliding sleeve;
12. pressing the needle; 13. a work bench.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the hardness measuring device of the present invention comprises a frame 1, a pull rod 4, a large lever 8, a support rod 9, a sliding sleeve 11 fixed on the frame 1, and a workbench 13; a pressing needle 12 is connected inside the sliding sleeve 11 in a sliding manner; the workbench 13 is arranged right below the pressing pin 12;
a support table 2 and a support rod fixing table 10 are fixed inside the frame 1; a lifting device 5 is fixed on the support platform 2; one end of the large lever 8 is hinged with the frame 1; the other end of the large lever 8 is fixed with a lifting ring 7; the body of the big lever 8 is hinged with the top end of the pressing needle 12; one end of the supporting rod 9 is hinged with a supporting rod fixing table 10; the other end of the supporting rod 9 extends into the hoisting ring 7; the output end of the lifting device 5 is hinged with the rod body of the supporting rod 9; the pull rod 4 is fixedly connected to the lifting ring 7; weights 3 are fixed on the pull rod 4; according to the measurement requirement, weights 3 are loaded on the pull rod 4, the lifting device 5 can drive the supporting rod 9 to swing, and a limit switch is arranged in the lifting device 5 and can control the stroke of the lifting device 5; after the lifting device 5 is lifted, the supporting rod 9 swings to overcome the gravity of the weight 3 and supports the large lever 8 to rotate anticlockwise, so that the pressing pin 12 is lifted for a certain distance; the lifting device 5 descends, the supporting rod 9 descends in the hanging ring 7 until the supporting rod 9 is not in contact with the hanging ring 7, and the large lever 8 presses the pressing pin 12 downwards to perform hardness testing under the action of the gravity of the weight 3;
the pull rod 4 is fixed on the lifting ring 7; the sample to be measured is placed on the surface of the workbench 13, and the pressing pin 12 is lifted through the swinging of the large lever 8; when the large lever 8 swings clockwise, the pressing pin 12 slides downwards in the sliding sleeve 11 and applies pressure to the sample for testing; after the test is finished, when the large lever 8 swings anticlockwise, the pressing pin 12 is pulled upwards; need not to rely on the telescoping device of high accuracy, the pressure of every side measurement all has the weight 3 of fixed weight to confirm, and very big limit improves the measuring precision.
As a preferred mode of the utility model, a hook 6 is fixed on the pull rod 4; the hook 6 is hung on the hanging ring 7; the connecting mode of the hook 6 is adopted, so that the disassembly and the assembly are convenient.
As a preferred mode of the present invention, the lifting device 5 is an electric push rod; one end of the electric push rod is fixedly connected with the support table 2; the other end of the electric push rod is hinged with the rod body of the support rod 9.
When the utility model is used, weights are loaded on the pull rod according to the measurement requirement, the lifting device can drive the support rod to swing, and the limit switch is arranged in the lifting device, so that the stroke of the lifting device can be controlled; after the lifting device rises, the supporting rod swings to overcome the gravity of the weight and supports the large lever to rotate anticlockwise, so that the pressing pin is lifted for a certain distance; the lifting device descends, the supporting rod descends in the hanging ring until the supporting rod is not in contact with the hanging ring, and the large lever presses the pressing pin downwards to perform hardness testing under the action of the gravity of the weight; the pull rod is fixed on the hanging ring; a measured sample is placed on the surface of the workbench, and the pressing pin is lifted through the swinging of the large lever; when the large lever swings clockwise, the pressing pin slides downwards in the sliding sleeve and applies pressure to the sample for testing; after the test is finished, when the large lever swings anticlockwise, the pressing pin is pulled upwards; the high-precision telescopic device is not needed, the pressure measured at each side is determined by the weight with fixed weight, and the measuring precision is improved to the maximum extent.
The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.
Claims (3)
1. A hardness measuring device comprises a frame (1), a sliding sleeve (11) fixed on the frame (1) and a workbench (13); a pressing needle (12) is connected inside the sliding sleeve (11) in a sliding manner; the workbench (13) is arranged right below the pressing needle (12);
the method is characterized in that: it also comprises a pull rod (4), a large lever (8) and a support rod (9); a support table (2) and a support rod fixing table (10) are fixed inside the rack (1); a lifting device (5) is fixed on the support table (2); one end of the large lever (8) is hinged with the frame (1); the other end of the large lever (8) is fixed with a hanging ring (7); the rod body of the large lever (8) is hinged with the top end of the pressing needle (12); one end of the supporting rod (9) is hinged with the supporting rod fixing table (10); the other end of the supporting rod (9) extends into the hoisting ring (7); the output end of the lifting device (5) is hinged with the rod body of the supporting rod (9); the pull rod (4) is fixedly connected to the lifting ring (7); weights (3) are fixed on the pull rod (4).
2. A hardness measuring device according to claim 1, wherein: a hook (6) is fixed on the pull rod (4); the hook (6) is hung on the hanging ring (7).
3. A hardness measuring device according to claim 1, wherein: the lifting device (5) is an electric push rod; one end of the electric push rod is fixedly connected with the support table (2); the other end of the electric push rod is hinged with the rod body of the support rod (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022795586.9U CN214121890U (en) | 2020-11-27 | 2020-11-27 | Hardness measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022795586.9U CN214121890U (en) | 2020-11-27 | 2020-11-27 | Hardness measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214121890U true CN214121890U (en) | 2021-09-03 |
Family
ID=77507492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022795586.9U Active CN214121890U (en) | 2020-11-27 | 2020-11-27 | Hardness measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214121890U (en) |
-
2020
- 2020-11-27 CN CN202022795586.9U patent/CN214121890U/en active Active
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