CN216900040U - Manual loading mechanism of Rockwell hardness tester - Google Patents
Manual loading mechanism of Rockwell hardness tester Download PDFInfo
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- CN216900040U CN216900040U CN202122487023.8U CN202122487023U CN216900040U CN 216900040 U CN216900040 U CN 216900040U CN 202122487023 U CN202122487023 U CN 202122487023U CN 216900040 U CN216900040 U CN 216900040U
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Abstract
The utility model provides a manual loading mechanism of a Rockwell hardness tester, and belongs to the technical field of hardness testers. The utility model comprises a handle and a bracket, wherein the handle is rotationally connected with a sclerometer main body through a hand wheel shaft, one end of the bracket is rotationally connected with a bracket seat, the bracket seat is fixedly connected with the sclerometer main body, the handle drives the bracket to rotate around the bracket seat through a driving mechanism, the driving mechanism comprises an eccentric wheel seat and a first synchronous belt wheel, the eccentric wheel seat is arranged below the middle of the bracket, a supporting bearing is rotationally arranged on the bottom surface of the middle of the bracket, an eccentric wheel is arranged below the supporting bearing, the eccentric wheel is rotationally connected with the eccentric wheel seat through the eccentric wheel shaft, a second synchronous belt wheel is sleeved on the eccentric wheel shaft, the first synchronous belt wheel is connected with the hand wheel shaft, and the second synchronous belt wheel is connected with the first synchronous belt wheel through a synchronous belt.
Description
Technical Field
The utility model relates to a manual loading mechanism of a Rockwell hardness tester, and belongs to the technical field of hardness testers.
Background
The manual Rockwell hardness measurement is one of the most commonly used hardness detection methods at present, has the advantages of high test speed, no need of a power supply and wide application in the automobile and electronic industries and various aspects of scientific research and production.
The existing force value shifting structure of a hardness tester mainly comprises a handle, a roller carrier, a roller, a lever, a bracket seat, a bracket, a transverse pin, a hand wheel shaft and a supporting bolt. The handle and the roller frame are arranged on a main body of the instrument through a hand wheel shaft, the lever is also arranged on a main body of the hardness tester through a supporting bolt, the bracket is arranged on the bracket seat and arranged on the main body, the handle rotates a certain angle to jack or lower the lever, and the bracket is supported or lowered through the transverse pin to realize loading or unloading.
The lever can be quickly pressed down or lifted up at a stroke when a rotating handle of the conventional hardness gauge force value gear shifting structure is loaded and unloaded, the national standard requires smooth loading and unloading, impact force can be caused by quick loading and unloading, and the test force value is directly influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above disadvantages of the prior art, an object of the present invention is to provide a manual loading mechanism for a rockwell hardness tester, which is used to solve the problems that the lever is quickly pressed down or lifted up at a stroke when the rotary handle of the conventional force value shifting structure is loaded and unloaded, the test force value is directly affected by impact caused by the quick loading and unloading, and the relative positions of the mounting positions of the hand wheel shaft, the support bolt and the bracket seat are difficult to process due to the rigid connection of the mechanism, as the national standard provides for smooth loading and unloading.
To achieve the above and other related objects, the present invention provides a manual loading mechanism for rockwell hardometer, comprising: the hand lever is rotatably connected with the hardometer main body through a hand wheel shaft, one end of the bracket is rotatably connected with the bracket seat, the bracket seat is fixedly connected with the hardometer main body, the hand lever drives the bracket to rotate around the bracket seat through a driving mechanism, the driving mechanism comprises an eccentric wheel seat and a first synchronous belt wheel, the eccentric wheel seat is arranged below the middle of the bracket, a supporting bearing is rotatably arranged on the bottom surface of the middle of the bracket, an eccentric wheel is arranged below the supporting bearing, the eccentric wheel is rotatably connected with the eccentric wheel seat through the eccentric wheel shaft, a second synchronous belt wheel is further sleeved on the eccentric wheel shaft, the first synchronous belt wheel is connected with the hand wheel shaft, and the second synchronous belt wheel is connected with the first synchronous belt wheel through a synchronous belt.
In an embodiment of the present invention, a deep groove bearing is disposed at a connection position between the eccentric wheel shaft and the eccentric wheel seat.
In an embodiment of the present invention, a positioning mechanism is further disposed on the eccentric shaft.
In an embodiment of the utility model, the positioning mechanism comprises a positioning wheel, the positioning wheel is sleeved on the eccentric wheel shaft, a positioning steel ball is arranged on one side of the positioning wheel on the eccentric wheel seat, and positioning grooves matched with the positioning steel balls are symmetrically arranged on the side surface of the positioning wheel.
In an embodiment of the utility model, the positioning steel ball is connected with the eccentric wheel seat through a return spring.
As described above, the manual loading mechanism of the rockwell hardness tester of the present invention has the following beneficial effects:
according to the utility model, the eccentric wheel mechanism is adopted to replace the original lever driving mechanism, the bracket can smoothly and linearly ascend or descend according to the outer circular surface of the eccentric wheel, impact force cannot be generated to influence a loading force value, the supporting bearing added on the bracket and the outer circular surface of the eccentric wheel form rolling friction, the service life is greatly prolonged, the mechanism is changed from rigid connection to flexible connection by the application of the synchronous belt, the processing and assembling difficulty of the mounting surface on the main body is greatly reduced, the loading precision is effectively improved, the use cost is reduced, the device is simple in structure, and the operation is simple and convenient.
Drawings
Fig. 1 is a schematic front view of a manual loading mechanism of a rockwell hardness tester according to an embodiment of the present invention.
Fig. 2 is a schematic top view of a manual loading mechanism of a rockwell hardness tester according to an embodiment of the present invention.
Wherein, 1, a handle; 2. a first timing pulley; 3. a synchronous belt; 4. a bracket holder; 5. a bracket; 6. a second timing pulley; 7. an eccentric wheel; 8. an eccentric wheel seat; 9. a support bearing; 10. a deep groove bearing; 11. a hand wheel shaft; 12. an eccentric shaft; 13. positioning wheels; 14. and (5) positioning the steel ball.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1-2. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Referring to fig. 1 to 2, the present invention provides a manual loading mechanism for a rockwell hardness tester, including: the hand handle 1 is rotatably connected with the sclerometer main body through a hand wheel shaft 11, one end of the bracket 5 is rotatably connected with the bracket seat 4, the bracket seat 4 is fixedly connected with the sclerometer main body, the hand handle 1 drives the bracket 5 to rotate around the bracket seat 4 through a driving mechanism, the driving mechanism comprises an eccentric wheel seat 8 and a first synchronous belt wheel 2, the eccentric wheel seat 8 is arranged below the middle of the bracket 5, a supporting bearing 9 is rotatably arranged on the bottom surface of the middle of the bracket 5, an eccentric wheel 7 is arranged below the supporting bearing 9, the eccentric wheel 7 is rotatably connected with the eccentric wheel seat 8 through an eccentric wheel shaft 12, a deep groove bearing 10 is arranged at the joint between the eccentric wheel shaft 12 and the eccentric wheel seat 8, a second synchronous belt wheel 6 is sleeved on the eccentric wheel shaft 12, the first synchronous belt wheel 2 is connected with the hand wheel shaft 11, the second synchronous belt wheel 6 is connected with the first synchronous belt wheel 2 through a synchronous belt 3, the eccentric wheel shaft 12 is further provided with a positioning mechanism, the positioning mechanism comprises a positioning wheel 13, the positioning wheel 13 is sleeved on the eccentric wheel shaft 12, a positioning steel ball 14 is arranged on one side of the positioning wheel 13 on the eccentric wheel seat 8, the positioning steel ball 14 is connected with the eccentric wheel seat 8 through a return spring, and positioning grooves matched with the positioning steel balls 14 are symmetrically formed in the side face of the positioning wheel 13.
The working principle of the manual loading mechanism of the Rockwell hardness tester is as follows: when the loading is removed, the handle 1 is rotated, the handle 1 drives the first synchronous belt wheel 2 to rotate through the hand wheel shaft 11, the first synchronous belt wheel 2 drives the second synchronous belt wheel 6 to rotate through the synchronous belt 3, the second synchronous belt wheel 6 drives the eccentric wheel shaft 12 to rotate, the eccentric wheel shaft 12 drives the eccentric wheel 7 to rotate, when the eccentric wheel 7 moves to the highest end, the eccentric wheel 7 jacks up the bracket 5 through the supporting bearing 9, at the moment, the bracket 5 is lifted upwards to remove the loading, meanwhile, the positioning groove in the positioning wheel 13 is clamped with the positioning steel ball 14, so that the eccentric wheel 7 is positioned, when the loading is needed, the handle 1 is continuously rotated, when the positioning groove on the other side of the positioning wheel 13 is clamped with the positioning steel ball 14, the eccentric wheel 7 moves to the lowest end, and the bracket 5 moves downwards to perform the loading.
In conclusion, the eccentric wheel mechanism is adopted to replace the original lever driving mechanism, the bracket can smoothly and linearly ascend or descend according to the outer circular surface of the eccentric wheel, impact force cannot be generated to influence a loading force value, the supporting bearing added on the bracket and the outer circular surface of the eccentric wheel form rolling friction, the service life is greatly prolonged, the mechanism is changed into flexible connection from rigid connection due to the application of the synchronous belt, the processing and assembling difficulty of the mounting surface on the main body is greatly reduced, the loading precision is effectively improved, the use cost is reduced, the device is simple in structure, and the operation is simple and convenient. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Those skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. A rockwell hardness tester manual loading mechanism comprising: the hand-held hardness tester comprises a handle (1) and a bracket (5), wherein the handle (1) is rotatably connected with a hardness tester main body through a hand wheel shaft (11), one end of the bracket (5) is rotatably connected with a bracket seat (4), the bracket seat (4) is fixedly connected with the hardness tester main body, the handle (1) drives the bracket (5) to rotate around the bracket seat (4) through a driving mechanism, and the hand-held hardness tester is characterized in that the driving mechanism comprises an eccentric wheel seat (8) and a first synchronous belt wheel (2), the eccentric wheel seat (8) is arranged below the middle of the bracket (5), a supporting bearing (9) is rotatably arranged on the bottom surface of the middle of the bracket (5), an eccentric wheel (7) is arranged below the supporting bearing (9), the eccentric wheel (7) is rotatably connected with the eccentric wheel seat (8) through an eccentric wheel shaft (12), a second synchronous belt wheel (6) is further sleeved on the eccentric wheel shaft (12), and the first synchronous belt wheel (2) is connected with the hand wheel shaft (11), the second synchronous pulley (6) is connected with the first synchronous pulley (2) through a synchronous belt (3).
2. The manual rockwell hardness tester loading mechanism according to claim 1, wherein: and a deep groove bearing (10) is arranged at the joint between the eccentric wheel shaft (12) and the eccentric wheel seat (8).
3. The manual rockwell hardness tester loading mechanism according to claim 1, wherein: the eccentric wheel shaft (12) is also provided with a positioning mechanism.
4. The manual rockwell hardness tester loading mechanism according to claim 3, wherein: the positioning mechanism comprises a positioning wheel (13), the positioning wheel (13) is sleeved on an eccentric wheel shaft (12), a positioning steel ball (14) is arranged on one side of the positioning wheel (13) on an eccentric wheel seat (8), and positioning grooves matched with the positioning steel balls (14) are symmetrically arranged on the side surface of the positioning wheel (13).
5. The manual rockwell hardness tester loading mechanism according to claim 4, wherein: the positioning steel ball (14) is connected with the eccentric wheel seat (8) through a return spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122487023.8U CN216900040U (en) | 2021-10-15 | 2021-10-15 | Manual loading mechanism of Rockwell hardness tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122487023.8U CN216900040U (en) | 2021-10-15 | 2021-10-15 | Manual loading mechanism of Rockwell hardness tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216900040U true CN216900040U (en) | 2022-07-05 |
Family
ID=82194951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122487023.8U Active CN216900040U (en) | 2021-10-15 | 2021-10-15 | Manual loading mechanism of Rockwell hardness tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216900040U (en) |
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2021
- 2021-10-15 CN CN202122487023.8U patent/CN216900040U/en active Active
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