CN111272593B - C-shaped loading device applied to portable Rockwell hardness tester - Google Patents
C-shaped loading device applied to portable Rockwell hardness tester Download PDFInfo
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- CN111272593B CN111272593B CN202010243282.3A CN202010243282A CN111272593B CN 111272593 B CN111272593 B CN 111272593B CN 202010243282 A CN202010243282 A CN 202010243282A CN 111272593 B CN111272593 B CN 111272593B
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- pin
- sleeve
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- rockwell hardness
- slot
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
- G01N3/44—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid the indentors being put under a minor load and a subsequent major load, i.e. Rockwell system
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
Abstract
The invention relates to a C-shaped loading device applied to a portable Rockwell hardness tester, which comprises a C-shaped clamp which is vertically arranged, wherein the lower end part of the opening side of the C-shaped clamp vertically penetrates through a screw rod and upwards extends at the opening end of the C-shaped clamp, the upper end part of the opening of the C-shaped clamp is fixedly connected with a vertical sleeve, the outer end of the sleeve is fixedly provided with a straight rod which horizontally outwards extends, one side of the straight rod close to the sleeve is hinged with a compression connecting rod and a Z-shaped loading head to form a parallel connecting rod mechanism, the inner end of the loading head is positioned right above the sleeve, the upper end of the screw rod is fixedly connected with a cushion block, and the Rockwell hardness tester is clamped with the cushion block to be detected through inserting the Rockwell hardness tester into the sleeve, and the compression connecting rod drives the inner end of the loading head to downwards press the Rockwell hardness tester to be detected.
Description
Technical Field
The invention relates to the field of hardness detection, in particular to a C-shaped loading device applied to a portable Rockwell hardness tester.
Background
The metal parts of the thermal power plant are operated in a high-temperature and high-pressure environment for a long time, the requirements on the mechanical properties of the metal parts are continuously improved, the important metal parts of the thermal power plant are required to be detected during the overhaul period of the thermal power plant to determine whether the mechanical properties of the metal parts are suitable for continuous use, and the advantages and disadvantages of the mechanical properties of the metal parts are directly related to safe and stable operation of a power plant unit. Because the power plant accident caused by the degradation of the metal material performance occurs at time, the huge economic loss is caused, the ordered development of the power plant is severely restricted, and the safety and stability of the power production are affected, the detection of the metal parts of the power plant is of great significance for ensuring the safe operation of the power plant unit. The method is characterized in that the method comprises the steps of detecting the mechanical properties of a metal part, namely, detecting the hardness of the metal part, wherein the hardness is detected by the hardness detection method, and the hardness detection method is mainly used for detecting the mechanical properties of the metal part. However, the portable Rockwell hardness is not widely used because of complicated operation, manual load application, large error easily occurs when the operation is not standard, and high requirements on the operation proficiency of personnel are provided. Therefore, a new portable loading device of the Rockwell hardness tester is designed, so that the loading device is easy to operate, and the stability of a detection system is improved, so that the requirement of on-site on-line detection is met.
Disclosure of Invention
In view of the defects of the prior art, the technical problem to be solved by the invention is to provide the C-shaped loading device applied to the portable Rockwell hardness tester, which is reasonable in structure and simple in operation, and the stability of a detection system is effectively improved.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a be applied to portable C shape loading device of Rockwell hardness tester, includes the C shape anchor clamps of vertical placement, C shape anchor clamps open side lower extreme is passed through vertically through the screw rod and is extended up at the open end of C shape anchor clamps, C shape anchor clamps open upper end has linked firmly vertical sleeve, and the sleeve outer end has set firmly the straight-bar that the level extends outwards, the straight-bar is formed parallel link mechanism through articulated the loading head that has compression connecting rod, zigzag in nearly sleeve one side, the loading head inner is located the sleeve directly over, screw rod upper end fixedly connected with cushion, through inserting Rockwell hardness tester in the sleeve and press from both sides the detection sample with the cushion, drive the loading head inner through compression connecting rod and push down the Rockwell hardness tester and detect.
Further, a semi-cylindrical first slot is vertically formed in the inner wall of the sleeve, the first slot extends from the upper end face of the sleeve to the position close to the lower end, a spring is mounted in the first slot in a matched mode, a hardness sleeve head is connected in a sliding mode from top to bottom through the first slot sleeve, a semi-cylindrical second slot is formed in the periphery of the hardness sleeve head in a matched mode from bottom to top, the upper end of the spring is propped against the top of the second slot, and the lower end of the spring is propped against the bottom of the first slot.
Further, the compression connecting rod extends upwards obliquely from inside to outside and comprises a hinge part and a compression part; the straight rod and the sleeve are fixedly arranged into a whole, a compression connecting rod mounting groove is formed in the upper surface of one side, close to the sleeve, of the straight rod downwards, the bottom end of the hinging part is arranged in the mounting groove and vertically penetrated and hinged through a first pin, the horizontal section outside the loading head is provided with a groove from the bottom upwards, the top end of the hinging part is positioned in the groove and vertically penetrated through the second pin, a first strip-shaped slot hole in sliding fit with the hinging part is formed in the loading head on two sides of the groove, the second pin penetrates through the first strip-shaped slot hole, a third pin is vertically penetrated at the near lower end of the vertical section of the loading head, a fourth pin is vertically penetrated at the middle section of the hinging part, the middle section of the hinging part is wound on the fourth pin through a torsion spring, and the upper end and the lower end of the torsion spring are respectively propped against the lower part of the third pin to be connected with the upper part of the first pin; the straight rod at the outer end of the groove is vertically provided with a second bar-shaped slotted hole in a penetrating mode through a fifth pin, and the ends of the third pin, the fourth pin and the fifth pin are limited through a triangular plate.
Furthermore, the triangular plate is a right-angle triangular plate, two triangular plates are arranged in total, and two ends of the third pin, the fourth pin and the fifth pin extend and penetrate through the inclined edges of the triangular plate.
Furthermore, the end parts of the pins are flange-shaped so as to ensure that the connection is stable and not separated.
Further, the upper surface of the straight rod and the lower surface of the horizontal section outside the loading headrest are provided with abdicating grooves matched with the fourth pin.
Further, a handle is fixedly arranged at the lower end of the screw rod to manually drive the screw rod to rotate.
Further, a limiting block for preventing the screw from loosening is arranged on the screw below the C-shaped clamp.
Compared with the prior art, the invention has the following beneficial effects: the device is applicable to the online Rockwell hardness detection of the metal part with the diameter lower than 200mm, and the parallel connecting rod mechanism effectively ensures the stability of test load application and the convenience of operation, so that the accuracy of hardness detection is ensured, and the test errors caused by the perpendicularity errors of the pressure head and the surface of a detection sample and the instability of the loading process are avoided when the handheld sclerometer is used for detection.
The invention will be described in further detail with reference to the drawings and the detailed description.
Drawings
FIG. 1 is a schematic view of a construction of an embodiment of the present invention;
FIG. 2 is a schematic view of a parallel linkage mechanism in an embodiment of the present invention;
FIG. 3 is a schematic view of the triangle of FIG. 2 with the triangle removed;
FIG. 4 is a top view of a straight rod and sleeve connection structure according to an embodiment of the present invention;
fig. 5 is a cross-sectional view of A-A in fig. 4.
In the figure: the clamping device comprises a 1-C-shaped clamp, a 2-screw rod, a 3-sleeve, a 4-straight rod, a 5-compression connecting rod, a 6-loading head, a 7-cushion block, an 8-first slot, a 9-spring, a 10-hardness sleeve head, an 11-second slot, a 12-hinge part, a 13-compression part, a 14-compression connecting rod mounting groove, a 15-first pin, a 16-groove, a 17-second pin, a 18-first strip slot, a 19-third pin, a 20-fourth pin, a 21-torsion spring, a 22-second strip slot, a 23-fifth pin, a 24-triangular plate, a 25-yielding groove, a 26-handle and a 27-limiting block.
Detailed Description
In order to make the above features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1-5, a C-shaped loading device applied to a portable rockwell hardness tester comprises a C-shaped clamp 1 which is vertically placed, the lower end of the open side of the C-shaped clamp vertically penetrates through a screw rod 2 and extends upwards at the open end of the C-shaped clamp, the upper end of the opening of the C-shaped clamp is fixedly connected with a vertical sleeve 3, the outer end of the sleeve is fixedly provided with a straight rod 4 which horizontally extends outwards, one side of the straight rod close to the sleeve is hinged with a compression connecting rod 5 and a zigzag loading head 6 to form a parallel connecting rod mechanism, the inner end of the loading head is positioned right above the sleeve, a cushion block 7 is fixedly connected with the upper end of the screw rod, the rockwell hardness tester is clamped and detected by the cushion block through the insertion of the rockwell hardness tester, the adjustment range of the screw rod is 0 mm-200 mm, and the clamping size can be adjusted by screwing the screw rod.
In the embodiment of the invention, a semi-cylindrical first slot 8 is vertically arranged on the inner wall of the sleeve, the first slot extends from the upper end surface of the sleeve to the position near the lower end, a spring 9 is arranged in the first slot in a matched manner, a hardness sleeve head 10 is connected with the sleeve through the first slot in a sliding manner from top to bottom, a semi-cylindrical second slot 11 matched with the spring is arranged on the periphery of the hardness sleeve head from bottom to top, the upper end of the spring is propped against the top of the second slot, the lower end of the spring is propped against the bottom of the first slot, two springs are respectively arranged in the two first slots in a vertical manner, and the stability of the upper and lower sliding of the hardness sleeve head is ensured.
In the embodiment of the invention, the compression connecting rod extends obliquely upwards from inside to outside and comprises a hinge part 12 and a compression part 13; the straight rod and the sleeve are fixedly arranged into a whole, a compression connecting rod mounting groove 14 is formed in the upper surface of one side, close to the sleeve, of the straight rod downwards, the bottom end of the hinging part is arranged in the mounting groove and vertically penetrated and hinged through a first pin 15, a groove 16 is formed in the horizontal section outside the loading headrest from the bottom upwards, and the groove upwards penetrates out of the horizontal section outside the loading headrest; the top end of the hinging part is positioned in the groove and vertically penetrated through by a second pin 17, a first bar-shaped slotted hole 18 which is in sliding fit with the hinging part is formed in the loading heads on the two sides of the groove, the second pin penetrates through the first bar-shaped slotted hole, a third pin 19 is vertically penetrated at the position close to the lower end of the vertical section of the loading head, a fourth pin 20 is vertically penetrated at the middle section of the hinging part, the middle section of the hinging part is wound at the edge of the fourth pin through a torsion spring 21, and the upper end and the lower end of the torsion spring are respectively propped against the lower part of the third pin to be connected with the upper part of the first pin; the straight rod at the outer end of the groove is vertically penetrated and provided with a second bar-shaped slotted hole 22, the second bar-shaped slotted hole is penetrated and provided with a fifth pin 23, the ends of the third pin, the fourth pin and the fifth pin are limited by a triangular plate 24, a parallel link mechanism is formed above, the stability and the convenience of manually applying load are ensured, and the two torsion springs are respectively wound and connected at the two ends of the fourth pin.
In the embodiment of the invention, the triangular plate is a right-angle triangular plate, two triangular plates are arranged in total, two ends of the third pin, the fourth pin and the fifth pin are all extended and pass through the inclined edges of the triangular plate, and the right-angle part of the triangular plate is positioned outside the first pin and is not connected with the first pin, so that the loading head can be stably and vertically pressed down.
In the embodiment of the invention, the end parts of the pins are all flange-shaped so as to ensure that the connection is stable and not separated.
In the embodiment of the invention, the upper surface of the straight rod and the lower surface of the horizontal section outside the loading headrest are respectively provided with a yielding groove 25 matched with the fourth pin.
In the embodiment of the invention, a handle 26 is fixed at the lower end of the screw rod to manually drive the screw rod to rotate.
In the embodiment of the invention, a limiting block 27 for preventing the screw from loosening is arranged on the screw below the C-shaped clamp.
The working principle of the embodiment of the invention is as follows: firstly, a portable Rockwell hardness tester is arranged in a sleeve and is connected with the top of a hardness sleeve head, then a sample to be tested is arranged between the hardness sleeve head and a cushion block, a handle is rotated to drive a cushion block to move upwards to clamp the sample to be tested, then the screw is fastened through an adjusting limiting block to prevent loosening, and the installation and principle of the limiting block are common devices and are mature in the application field of the screw, so that the details are omitted; and then, a load is applied downwards to the compression part of the compression connecting rod, so that the second pin slides backwards in the first bar-shaped slotted hole, the fifth pin slides backwards in the second bar-shaped slotted hole, the loading head cannot move backwards and then vertically moves downwards along with the rotation of the fifth pin of the triangular plate, at the moment, the torsion spring is compressed, the loading head moves downwards to preload the sclerometer, then, the load is continuously applied downwards to the compression part of the compression connecting rod, the load reaches a specified load and then is kept for a certain time, the load is released, the torsion spring is stretched and reset, the compression connecting rod is unloaded, and the hardness detection is completed through the display of a detection result of output equipment externally connected with the portable Rockwell sclerometer.
The present invention is not limited to the above-described preferred embodiment, and any person who has developed a C-shaped loading device for a portable rockwell hardness machine in accordance with the teachings of the present invention may be given various other forms. All equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.
Claims (6)
1. Be applied to portable Rockwell hardness tester's C shape loading device, its characterized in that: the device comprises a C-shaped clamp which is vertically arranged, wherein the lower end part of the opening side of the C-shaped clamp vertically passes through a screw rod and upwards extends at the opening end of the C-shaped clamp, the upper end part of the opening of the C-shaped clamp is fixedly connected with a vertical sleeve, the outer end of the sleeve is provided with a straight rod which horizontally outwards extends, one side of the straight rod close to the sleeve is hinged with a compression connecting rod and a Z-shaped loading head to form a parallel connecting rod mechanism, the inner end of the loading head is positioned right above the sleeve, a cushion block is fixedly connected to the upper end of the screw rod, a sample is clamped and detected through inserting a Rockwell hardness tester into the sleeve, and the inner end of the loading head is driven to downwards press the Rockwell hardness tester through the compression connecting rod to detect;
a semi-cylindrical first slot is vertically formed in the inner wall of the sleeve, the first slot extends from the upper end face of the sleeve to the position close to the lower end, a spring is mounted in the first slot in a matched mode, a hardness sleeve head is connected with the sleeve through the first slot in a sliding mode from top to bottom, a semi-cylindrical second slot matched with the spring is formed in the periphery of the hardness sleeve head in a mode of being upwards from bottom to top, the upper end of the spring is propped against the top of the second slot, and the lower end of the spring is propped against the bottom of the first slot;
the compression connecting rod extends obliquely upwards from inside to outside and comprises a hinge part and a compression part; the straight rod and the sleeve are fixedly arranged into a whole, a compression connecting rod mounting groove is formed in the upper surface of one side, close to the sleeve, of the straight rod downwards, the bottom end of the hinging part is arranged in the mounting groove and vertically penetrated and hinged through a first pin, the horizontal section outside the loading head is provided with a groove from the bottom upwards, the top end of the hinging part is positioned in the groove and vertically penetrated through the second pin, a first strip-shaped slot hole in sliding fit with the hinging part is formed in the loading head on two sides of the groove, the second pin penetrates through the first strip-shaped slot hole, a third pin is vertically penetrated at the near lower end of the vertical section of the loading head, a fourth pin is vertically penetrated at the middle section of the hinging part, the middle section of the hinging part is wound on the fourth pin through a torsion spring, and the upper end and the lower end of the torsion spring are respectively propped against the lower part of the third pin to be connected with the upper part of the first pin; the straight rod at the outer end of the groove is vertically provided with a second bar-shaped slotted hole in a penetrating mode through a fifth pin, and the ends of the third pin, the fourth pin and the fifth pin are limited through a triangular plate.
2. A C-shaped loading device for a portable rockwell hardness scale of claim 1, wherein: the triangular plate is a right-angle triangular plate, two triangular plates are arranged in total, and two ends of the third pin, the fourth pin and the fifth pin are all extended and pass through the inclined edges of the triangular plate.
3. A C-shaped loading device for a portable rockwell hardness scale of claim 1, wherein: the end parts of the pins are flange-shaped so as to ensure that the connection is stable and not separated.
4. A C-shaped loading device for a portable rockwell hardness scale of claim 1, wherein: and the upper surface of the straight rod and the lower surface of the horizontal section outside the loading headrest are provided with abdication grooves matched with the fourth pin.
5. A C-shaped loading device for a portable rockwell hardness scale of claim 1, wherein: a handle is fixedly arranged at the lower end of the screw rod to manually drive the screw rod to rotate.
6. A C-shaped loading device for a portable rockwell hardness scale of claim 1, wherein: a limiting block for preventing the screw from loosening is arranged on the screw below the C-shaped clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010243282.3A CN111272593B (en) | 2020-03-31 | 2020-03-31 | C-shaped loading device applied to portable Rockwell hardness tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010243282.3A CN111272593B (en) | 2020-03-31 | 2020-03-31 | C-shaped loading device applied to portable Rockwell hardness tester |
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| Publication Number | Publication Date |
|---|---|
| CN111272593A CN111272593A (en) | 2020-06-12 |
| CN111272593B true CN111272593B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010243282.3A Active CN111272593B (en) | 2020-03-31 | 2020-03-31 | C-shaped loading device applied to portable Rockwell hardness tester |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2901293Y (en) * | 2006-05-31 | 2007-05-16 | 沈阳天星试验仪器有限公司 | Portable Rockwell hardness tester |
| WO2013135026A1 (en) * | 2012-03-13 | 2013-09-19 | 沈阳天星试验仪器有限公司 | Portable digital display hardness measuring device |
| CN204679358U (en) * | 2015-05-23 | 2015-09-30 | 湖南工学院 | A kind of Physical Experiment portable hardometer |
| CN106198272A (en) * | 2016-08-08 | 2016-12-07 | 浙江坤博机械制造有限公司 | A kind of portable die hardness detecting instrument |
| CN205941243U (en) * | 2016-08-08 | 2017-02-08 | 浙江坤博机械制造有限公司 | Portable mould hardness detector |
| CN206671096U (en) * | 2017-03-04 | 2017-11-24 | 金一澄 | Aluminium section bar hardometer |
-
2020
- 2020-03-31 CN CN202010243282.3A patent/CN111272593B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2901293Y (en) * | 2006-05-31 | 2007-05-16 | 沈阳天星试验仪器有限公司 | Portable Rockwell hardness tester |
| WO2013135026A1 (en) * | 2012-03-13 | 2013-09-19 | 沈阳天星试验仪器有限公司 | Portable digital display hardness measuring device |
| CN204679358U (en) * | 2015-05-23 | 2015-09-30 | 湖南工学院 | A kind of Physical Experiment portable hardometer |
| CN106198272A (en) * | 2016-08-08 | 2016-12-07 | 浙江坤博机械制造有限公司 | A kind of portable die hardness detecting instrument |
| CN205941243U (en) * | 2016-08-08 | 2017-02-08 | 浙江坤博机械制造有限公司 | Portable mould hardness detector |
| CN206671096U (en) * | 2017-03-04 | 2017-11-24 | 金一澄 | Aluminium section bar hardometer |
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| Publication number | Publication date |
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| CN111272593A (en) | 2020-06-12 |
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