CN109946185B - Scratch-resistant tester for paint coating detection - Google Patents
Scratch-resistant tester for paint coating detection Download PDFInfo
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- CN109946185B CN109946185B CN201910273274.0A CN201910273274A CN109946185B CN 109946185 B CN109946185 B CN 109946185B CN 201910273274 A CN201910273274 A CN 201910273274A CN 109946185 B CN109946185 B CN 109946185B
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- 239000003973 paint Substances 0.000 title claims abstract description 21
- 239000011248 coating agent Substances 0.000 title claims abstract description 17
- 238000000576 coating method Methods 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 title claims abstract description 13
- 230000003678 scratch resistant effect Effects 0.000 title claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 93
- 238000012360 testing method Methods 0.000 claims abstract description 45
- 238000007790 scraping Methods 0.000 claims abstract description 38
- 230000009471 action Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 5
- 230000033001 locomotion Effects 0.000 abstract description 12
- 208000029154 Narrow face Diseases 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a scratch-resistant tester for paint coating detection, which comprises an operating mechanism, a bearing mechanism, a swinging mechanism, a testing mechanism, an insulating plate, a bottom plate and a driving mechanism, wherein the driving mechanism is arranged in the operating mechanism, the bearing mechanism is arranged on the operating mechanism, and one side of the bearing mechanism is provided with the swinging mechanism. This paint coating that spout is connected detects with anti-scratch tester sets up the sloping piece in preceding stop position, and the cam that utilizes swing mechanism in back stop position is controlled equipment, and when scraping the needle and moving to preceding stop position, the pulley upward movement of installation on the testing mechanism rolls the sloping piece to raise self height, with this lifting scraping needle, make the contact separation of scraping needle and model, when scraping the needle and moving to back stop position, utilize swing structure to drive the cam, the cam is rotatory to convex face from the narrow face this moment, thereby carry out the lifting to test structure, make equipment motion stop.
Description
Technical Field
The invention relates to the technical field of coating teaching research, in particular to a scratch-resistant tester for paint coating detection.
Background
Along with the increasing intervention of chemical products in human life, the defects of hidden danger are brought to human beings, the defects are not easy to catch eyes, for example, when paint is used, the uniformity and scratch resistance of the paint coating often determine the service life of painted objects, such as walls, machines and the like, the paint coating is the most common and convenient method for preventing the damage and corrosion of the walls, the instruments and the like, so the detection of the scratch resistance of the paint is more important, and the result of the scratch resistance detection of the paint often determines the quality of the paint and the function in use, and the protection capability of the walls and the instruments is stable.
The existing paint scratch-resistant detection equipment has the following defects and problems when in use: for example, after the single stroke of the traditional connecting mechanism is finished, the sample needs to be readjusted to return to the starting point position again to perform a second experiment, the operation is too complicated, the operation is not stable and accurate enough in the process of movement, and the mechanism is damaged due to the fact that the motor continues to operate when a switch fails in the test stroke; when the weight is not placed, the balance cannot be maintained due to uneven stress of the scraping needle bracket, and when the weight is placed, the weight cannot be accurately applied to the scraping needle; in the test process, the conductivity of other parts such as a shell and the like can cause interference and error on a test result; the scraping needle is inconvenient to install, disassemble and replace; the scraping needle is not easy to lift when reaching the front and rear stop positions, and damage to the testing instrument is possibly caused, so that the current scratch-resistant testing instrument for paint coating detection needs to be improved.
Disclosure of Invention
The invention aims to provide a scratch-resistant tester for paint coating detection, which is used for solving the problems that after the single stroke of the traditional connecting mechanism is ended, a sample is required to be readjusted to return to a starting point position for a second experiment, the operation is too complicated, the operation is not stable and accurate enough in movement, and the mechanism is damaged due to continuous operation of a motor when a switch fails in the test stroke; when the weight is not placed, the balance cannot be maintained due to uneven stress of the scraping needle bracket, and when the weight is placed, the weight cannot be accurately applied to the scraping needle; in the test process, the conductivity of other parts such as a shell and the like can cause interference and error on a test result; the scraping needle is inconvenient to install, disassemble and replace; the scraping needle is not easy to lift when reaching the front and rear stop positions, and the damage to the testing instrument can be caused.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a paint coating detects with anti-scratch tester, includes operating device, bears mechanism, swing mechanism, testing mechanism, insulation board, bottom plate and actuating mechanism, operating device internally mounted has actuating mechanism, bear the mechanism setting on operating device, bear one side of mechanism and install swing mechanism, testing mechanism fixes on bearing the mechanism, be provided with the insulation board between operating device and the bearing mechanism, operating device's bottom is connected with the bottom plate.
Further, the operating mechanism comprises a voltmeter, a test switch, an action switch, a power switch and a shell, wherein the voltmeter is arranged on one side of the shell, the test switch is arranged on one side of the shell, which is close to the voltmeter, the action switch is fixed on one side of the test switch, and the power switch is fixed on one side of the action switch.
Further, the bearing mechanism comprises a sliding seat, a sliding plate and an oblique position block, wherein the sliding seat is fixed on the shell, the sliding plate is installed on the sliding seat, and one end of the sliding plate is provided with the oblique position block.
Further, the sliding seat and the sliding plate form a sliding structure.
Further, the swing mechanism comprises a swing rod, a transmission shaft, a cam shaft and a cam, wherein the swing rod is fixed on one side of the casing, the transmission shaft is fixed at one end of the swing rod, the cam shaft is installed at one end of the swing rod far away from the transmission shaft, and the cam is arranged at one end of the cam shaft.
Further, the cam shaft and the cam form a rotating structure, and the cam shaft is an oval part.
Further, the testing mechanism comprises a rocker, a weight rod, a rocker rotating shaft, a rocker rotating seat, a balance weight, a pulley, a chuck cable cover, a weight seat, a chuck and a scraping needle, wherein the weight rod is installed at one end of the rocker, one side of the rocker far away from the weight rod is provided with the pulley, one side of the pulley is fixed with the weight seat, the outer side of the weight seat is connected with the chuck cable cover, the chuck cable cover is internally provided with the chuck, one end of the chuck is fixed with the scraping needle, one end of the rocker far away from the weight rod is provided with the balance weight, one side of the rocker close to the balance weight is provided with the rocker rotating shaft, and one end of the rocker rotating shaft is fixed with the rocker rotating seat.
Further, the sizes of the chuck cable sleeve and the weight seat are identical, and the chuck cable sleeve and the weight seat form a sliding structure.
Further, the driving mechanism comprises a large gear, an insulating coupler, a motor, a rack and a pinion, wherein the large gear is arranged in the shell, the motor is fixed on one side of the large gear, the insulating coupler is arranged below the motor, the pinion is arranged at one end of the insulating coupler, and the rack is fixedly arranged at the bottom of the sliding plate.
Further, the sizes of the large gear and the rack are identical, and the large gear and the rack form a clamping structure.
Compared with the prior art, the invention has the beneficial effects that:
1. The motor rotates to drive the interaction of the large gear and the rack, so that the motor rotates to be converted into linear motion, and the linear motion acts on the sliding plate, and the rotating force of the motor drives the sliding plate to move on the sliding seat.
2. The forward and reverse rotation of the motor is utilized to convert the one-way movement of the sliding plate into the reciprocating movement, so that a two-way test experiment is realized, the complexity of manually and repeatedly adjusting the position of the sample plate in the traditional equipment is avoided, and meanwhile, the service life of the equipment is also easily shortened due to repeated manual adjustment of the sliding plate.
3. In order to make the weight accurate in a normal experiment, the balance approach adjustment of the rocker is needed on the scraping needle, and the common method is to use a limit nut to adjust the rocker too much, and the device uses a weight balance rod structure to promote the scraping needle and the rocker to be in a balanced state by adjusting the position of the balance weight.
4. An insulating plate is paved between the testing mechanism and the operating mechanism, and because the equipment testing principle is that the reading of the voltmeter changes, metal parts included in the operating mechanism easily interfere the measuring process, so that the reading of the voltmeter is abnormal, and the testing mechanism and the operating mechanism are required to be separated by the insulating plate.
5. The scraping needle is flexible in mounting structure, and when the scraping needle is fixed by utilizing the sliding clamping of the chuck cable sleeve, the scraping needle is convenient to disassemble and maintain and is also convenient to fix.
6. The device is characterized in that a bevel block is arranged at a front stopping position, a cam of a swinging mechanism is used for controlling the device at a rear stopping position, when the scraping needle moves to the front stopping position, a pulley arranged on the testing mechanism moves upwards, the bevel block is rolled, so that the self height is raised, the scraping needle is lifted, the scraping needle is separated from a sample plate in a contact manner, when the scraping needle moves to the rear stopping position, the cam is driven by the swinging structure, and then the cam rotates to an arc-shaped surface from a narrow surface, so that the testing structure is lifted, and the movement of the device is stopped.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic diagram of a front view structure of the present invention;
FIG. 3 is a schematic side view of the present invention;
FIG. 4 is a schematic diagram of a driving mechanism according to the present invention;
FIG. 5 is a schematic diagram of a swing mechanism according to the present invention;
fig. 6 is a schematic view of a partial cross-sectional structure of the scraping needle structure of the present invention.
In the figure: 1. the device comprises an operating mechanism, 101, a voltmeter, 102, a test switch, 103, an action switch, 104, a power switch, 105, a machine shell, 2, a bearing mechanism, 201, a sliding seat, 202, a sliding plate, 203, a tilting block, 3, a swinging mechanism, 301, a swinging rod, 302, a transmission shaft, 303, a cam shaft, 304, a cam, 4, a test mechanism, 401, a rocker, 402, a weight rod, 403, a rocker rotating shaft, 404, a rocker rotating seat, 405, a balance weight, 406, a pulley, 407, a chuck cable sleeve, 408, a weight seat, 409, a chuck, 410, a scraping needle, 5, an insulating plate, 6, a bottom plate, 7, a driving mechanism, 701, a large gear, 702, an insulating coupling, 703, a motor, 704, a rack, 705 and a pinion.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a paint coating detects with scratch resistance tester, includes operating device 1, bears mechanism 2, swing mechanism 3, testing mechanism 4, insulation board 5, bottom plate 6 and actuating mechanism 7, operating device 1 internally mounted has actuating mechanism 7, bear mechanism 2 setting on operating device 1, swing mechanism 3 is installed to one side of bearing device 2, testing mechanism 4 is fixed on bearing device 2, be provided with insulation board 5 between operating device 1 and the bearing device 2, the bottom of operating device 1 is connected with bottom plate 6.
Preferably, the operating mechanism 1 includes a voltmeter 101, a test switch 102, an action switch 103, a power switch 104 and a housing 105, the voltmeter 101 is installed on one side of the housing 105, the test switch 102 is installed on one side of the housing 105 close to the voltmeter 101, the action switch 103 is fixed on one side of the test switch 102, and the power switch 104 is fixed on one side of the action switch 103.
Preferably, the carrying mechanism 2 includes a sliding seat 201, a sliding plate 202 and a tilting block 203, the sliding seat 201 is fixed on the housing 105, the sliding seat 201 is provided with the sliding plate 202, and one end of the sliding plate 202 is provided with the tilting block 203.
Preferably, the sliding seat 201 and the sliding plate 202 form a sliding structure.
Preferably, the swing mechanism 3 includes a swing lever 301, a transmission shaft 302, a cam shaft 303, and a cam 304, the swing lever 301 is fixed on one side of the housing 105, the transmission shaft 302 is fixed on one end of the swing lever 301, the cam shaft 303 is mounted on one end of the swing lever 301 away from the transmission shaft 302, and the cam 304 is disposed on one end of the cam shaft 303.
Preferably, the cam shaft 303 and the cam 304 form a rotating structure, and the cam shaft 303 is an oval part.
Preferably, the test mechanism 4 comprises a rocker 401, a weight bar 402, a rocker rotating shaft 403, a rocker rotating seat 404, a balance weight 405, a pulley 406, a collet cable sheath 407, a weight seat 408, a collet 409 and a scraping needle 410, wherein the weight bar 402 is installed at one end of the rocker 401, the pulley 406 is arranged at one side of the rocker 401 far away from the weight bar 402, the weight seat 408 is fixed at one side of the pulley 406, the collet cable sheath 407 is connected to the outer side of the weight seat 408, the collet 409 is arranged in the collet cable sheath 407, the scraping needle 410 is fixed at one end of the collet cable sheath 409, the balance weight 405 is arranged at one end of the rocker 401 far away from the weight bar 402, the rocker rotating shaft 403 is arranged at one side of the rocker 401 near the balance weight 405, and the rocker rotating seat 404 is fixed at one end of the rocker rotating shaft 403.
Preferably, the dimensions of the chuck cable sleeve 407 and the weight seat 408 are matched, and the chuck cable sleeve 407 and the weight seat 408 form a sliding structure.
Preferably, the driven mechanism 7 comprises a large gear 701, an insulating coupling 702, a motor 703, a rack 704 and a pinion 705, wherein the large gear 701 is installed inside the casing 105, the motor 703 is fixed on one side of the large gear 701, the insulating coupling 702 is installed below the motor 703, the pinion 705 is installed at one end of the insulating coupling 702, and the rack 704 is fixedly installed at the bottom of the sliding plate 202.
Preferably, the sizes of the large gear 701 and the rack 704 are identical, and the large gear 701 and the rack 704 form a clamping structure.
When the device is specifically used, firstly, the operating mechanism 1, the bearing mechanism 2, the swinging mechanism 3, the testing mechanism 4 and the driving mechanism 7 which are included in the device are installed and fixed, then the balance weight 405 is stirred to move along one end of the rocker 401, the rocker 401 rotates by virtue of the action between the rocker rotating shaft 403 and the rocker rotating seat 404, at the moment, one end of the rocker 401 provided with the weight seat 408 is lifted, the chuck cable sleeve 407 is stirred upwards, the chuck cable sleeve 407 slides along the weight seat 408, the chuck 409 is opened, the scraping needle 410 is plugged into the chuck 409, a certain length is reserved outside the chuck 409, the chuck cable sleeve 407 is stirred downwards to tightly press the chuck 409, so that the scraping needle 410 is installed and fixed, then the position of the balance weight 405 is adjusted, the rocker 401 rotates again by virtue of the action between the rocker rotating shaft 403 and the rocker rotating seat 404, at the moment, one end of the rocker 401 provided with the weight seat 408 falls down, continuously slowly adjusting the positions of the balance weights 405 to balance the two ends of the rocker 401, hovering the scraping needle 410 at a position close to the sliding plate 203 and keeping the scraping needle motionless, fixing a sample to be detected on the sliding plate 203, adjusting the left and right balance of the rocker 401 to enable the scraping needle 410 to just contact the sample, selecting a proper weight and placing the proper weight on the weight seat 408, enabling the middle hole of the weight to just pass through the weight rod 402, connecting a power supply of the equipment, switching on the power supply switch 104, powering on the equipment and switching on the test switch 103, at the moment, operating the motor 703 and driving the insulating coupler 702 to drive the pinion 705 to operate, enabling the pinion 705 and the gear 701 to be engaged with each other to drive the gear to rotate, enabling the rotation force of the motor to be converted into linear motion force to drive the sliding plate 202 to slide on the sliding seat 201, and changing the forward and backward rotation directions of the motor 703 through the action switch 103, thus realizing the double-stroke movement of the sliding plate 202 on the sliding seat 201, carrying out reciprocating test on a sample, when the operation of the equipment is finished in a single way, a front stop position is provided with a bevel block 203, a rear stop position is used for controlling the equipment by utilizing a cam 304 in a swinging mechanism 3, when a scraping needle 410 moves to the front stop position, a pulley 406 arranged on a testing mechanism 4 moves upwards, rolls the bevel block 203, thereby raising the self height, thereby raising the rocker 401 to integrally raise the scraping needle 410, at the moment, the scraping needle 410 is in contact with and separated from a sample plate, and when the scraping needle 410 moves to the rear stop position, a swinging rod 301 in the swinging mechanism 3 is used for driving a cam shaft 303 to rotate under the action of a transmission shaft 302, so that the cam 304 arranged at one end of the cam shaft 303 changes position, at the moment, the cam 304 rotates from a narrow surface to a circular arc surface, thereby raising the testing mechanism 4, and simultaneously, the stroke switch bumps against a rear stroke switch, and a trigger control circuit is disconnected to stop the operation of the motor, so that the movement of the equipment is stopped.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. The foregoing is merely illustrative of the preferred embodiments of this invention, and it is noted that there is objectively no limit to the specific structure disclosed herein, since numerous modifications, adaptations and variations can be made by those skilled in the art without departing from the principles of the invention, and the above-described features can be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present invention. .
Claims (5)
1. The utility model provides a paint coating detects with scratch resistance tester, includes operating device, bears mechanism, swing mechanism, testing mechanism, insulation board, bottom plate and actuating mechanism, its characterized in that: the test device comprises an operating mechanism, a bearing mechanism, a swinging mechanism, a test mechanism, an insulating plate, a base plate and a base plate, wherein the operating mechanism is internally provided with the driving mechanism, the bearing mechanism is arranged on the operating mechanism, the swinging mechanism is arranged on one side of the bearing mechanism, the test mechanism is fixed on the bearing mechanism, the insulating plate is arranged between the operating mechanism and the bearing mechanism, and the base plate is connected with the bottom of the operating mechanism;
The operating mechanism comprises a voltmeter, a test switch, an action switch, a power switch and a shell, wherein the voltmeter is arranged on one side of the shell, the test switch is arranged on one side of the shell close to the voltmeter, the action switch is fixed on one side of the test switch, and the power switch is fixed on one side of the action switch;
the bearing mechanism comprises a sliding seat, a sliding plate and an oblique block, wherein the sliding seat is fixed on the shell, the sliding seat is provided with the sliding plate, and one end of the sliding plate is provided with the oblique block;
The swing mechanism comprises a swing rod, a transmission shaft, a cam shaft and a cam, wherein the swing rod is fixed on one side of the shell, the transmission shaft is fixed at one end of the swing rod, the cam shaft is installed at one end of the swing rod far away from the transmission shaft, and the cam is arranged at one end of the cam shaft;
The testing mechanism comprises a rocker, a weight rod, a rocker rotating shaft, a rocker rotating seat, a balance weight, a pulley, a chuck cable jacket, a weight seat, a chuck and a scraping needle, wherein the weight rod is installed at one end of the rocker, the pulley is arranged at one side of the rocker far away from the weight rod, the weight seat is fixed at one side of the pulley, the chuck cable jacket is connected to the outer side of the weight seat, the chuck is installed in the chuck cable jacket, the scraping needle is fixed at one end of the chuck, the balance weight is arranged at one end of the rocker far away from the weight rod, the rocker rotating shaft is arranged at one side of the rocker close to the balance weight, and the rocker rotating seat is fixed at one end of the rocker rotating shaft;
The driving mechanism comprises a large gear, an insulating coupler, a motor, a rack and a pinion, wherein the large gear is arranged in the shell, the motor is fixed on one side of the large gear, the insulating coupler is arranged below the motor, the pinion is arranged at one end of the insulating coupler, and the rack is fixedly arranged at the bottom of the sliding plate.
2. A scratch resistant tester for paint coating detection as set forth in claim 1 wherein: the sliding seat and the sliding plate form a sliding structure.
3. A scratch resistant tester for paint coating detection as set forth in claim 1 wherein: the cam shaft and the cam form a rotating structure, and the cam shaft is an oval part.
4. A scratch resistant tester for paint coating detection as set forth in claim 1 wherein: the sizes of the chuck cable sleeve and the weight seat are identical, and the chuck cable sleeve and the weight seat form a sliding structure.
5. A scratch resistant tester for paint coating detection as set forth in claim 1 wherein: the sizes of the large gear and the rack are identical, and the large gear and the rack form a clamping structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910273274.0A CN109946185B (en) | 2019-04-04 | 2019-04-04 | Scratch-resistant tester for paint coating detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910273274.0A CN109946185B (en) | 2019-04-04 | 2019-04-04 | Scratch-resistant tester for paint coating detection |
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| Publication Number | Publication Date |
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| CN109946185A CN109946185A (en) | 2019-06-28 |
| CN109946185B true CN109946185B (en) | 2024-05-14 |
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| CN201910273274.0A Active CN109946185B (en) | 2019-04-04 | 2019-04-04 | Scratch-resistant tester for paint coating detection |
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| CN115266448B (en) * | 2022-08-03 | 2023-04-28 | 江苏财经职业技术学院 | New energy source board block material scraping and grinding detection equipment |
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| CN104931374A (en) * | 2015-07-15 | 2015-09-23 | 肇庆市嘉仪仪器有限公司 | Abrasion resistance testing machine |
| WO2017211064A1 (en) * | 2016-06-06 | 2017-12-14 | 苏州华源控股股份有限公司 | Coating tester |
| CN206489015U (en) * | 2017-02-08 | 2017-09-12 | 东莞市恒宇仪器有限公司 | A kind of coating cloth scrunch testing machine |
| CN206891936U (en) * | 2017-05-16 | 2018-01-16 | 东莞市联合检测校准技术有限公司 | A kind of cooker non-stick pan coating layer tester |
| CN107238528A (en) * | 2017-06-15 | 2017-10-10 | 深圳市旺盈彩盒纸品有限公司 | A kind of printed matter scratch-resistant tester and its method of testing |
| CN108037032A (en) * | 2017-12-08 | 2018-05-15 | 武汉华星光电半导体显示技术有限公司 | Tester |
| CN108444852A (en) * | 2018-06-13 | 2018-08-24 | 深圳市大满包装有限公司 | Coating for metal surfaces scratch resistance test device |
| CN210322656U (en) * | 2019-04-04 | 2020-04-14 | 广东嘉仪仪器集团有限公司 | Paint coating that spout is connected detects uses resistant scratch tester |
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| CN109946185A (en) | 2019-06-28 |
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