A device for testing the wear resistance of energy-saving architectural coatings

Abstract

A device for testing the wear resistance of energy-saving architectural coatings comprises a base, an electronic scale is fixed on the base, a grinding device is arranged above the electronic scale, the grinding device comprises a grinding table, a clamping ring and an intermediate platform are arranged above the grinding table in sequence, a number of axle pins with axle pin caps are fixed on the clamping ring, the axle pins are slidably connected with the intermediate platform, and a No. 1 spring is sleeved on the axle pins; a slide is slidably connected to the intermediate platform, an upper limit plate and a lower limit plate are fixed on the slide, the upper limit plate and the lower limit plate are respectively located at the upper and lower sides of the intermediate platform, a grinding motor is fixed below the lower limit plate, a grinding wheel is fixed on the rotating shaft of the grinding motor; a weight block is connected to the upper end of the slide. The present invention can replace weight blocks of different specifications according to needs, and the replacement process can be completed automatically; it can perform automatic weighing, and can remove the dust ground down in time.

Description

Technical Field

[0001] The invention belongs to the field of coating performance testing equipment, and in particular relates to a device for testing the wear resistance of energy-saving architectural coatings. Background Art

[0002] Wear resistance is one of the physical properties of coatings, which directly affects the service life of coatings. The international standard ISO7784-2 stipulates that the wear resistance of coatings is measured by the rotating friction rubber wheel method, that is, under the specified test conditions of the rotating disk speed of 60r / min and the pressure arm bearing a certain load, a hard rubber friction wheel embedded with diamond abrasive is used to wear the coating surface. Its wear resistance can be expressed and evaluated by the average value of the coating mass loss after grinding with a specified grinding number of revolutions (weight loss method) or the average grinding number of revolutions required to wear a certain thickness of coating (revolution method). This time, the weight loss method was used. The patent with publication number CN108663267A discloses a device for testing the wear resistance of coatings, including a base plate, a grinding chamber, a cylinder 1, a bearing plate, a coating plate, a movable plate, a motor, a grinding disc, a cylinder 2, a dust chamber and an exhaust fan. The base plate is arranged on a bracket, the grinding chamber is arranged on the base plate, the cylinder 1 is arranged on the back of the base plate, the bearing plate is arranged on a piston rod 1, the coating plate is movably arranged in a bearing groove, a slider is arranged on the movable plate, and the motor is arranged on the movable plate. The present invention provides limit rods on opposite sides of the coating plate, and the limit rods are arranged in the limit grooves. The limit rods and the limit grooves facilitate the coating plate to be placed in the bearing groove or taken out of the bearing groove, thereby improving the work efficiency. On the other hand, the stability of the coating plate on the bearing plate and the coating on the coating plate during the grinding process can also be improved, thereby improving the accuracy of the coating wear resistance test results. Research has found that the prior art still has the following problems: (1) it is difficult to apply loads of different specifications; (2) it is impossible to weigh automatically; (3) it is impossible to remove dust. Summary of the invention

[0003] The purpose of the present invention is to provide an energy-saving architectural coating wear resistance testing device, which can replace weight blocks of different specifications according to needs, and the replacement process can be completed automatically; it can automatically weigh and remove the ground dust in time.

[0004] The technical solution adopted by the present invention is: a device for testing the wear resistance of energy-saving building coatings, comprising a base, an electronic scale is fixed on the base, a grinding device is arranged above the electronic scale, the grinding device comprises a grinding table, a clamping ring and an intermediate platform are arranged in sequence above the grinding table, a plurality of axle pins with axle pin caps are fixed on the clamping ring, the axle pins are slidably connected with the intermediate platform, and a No. 1 spring is sleeved on the axle pins; a slide cylinder is slidably connected to the intermediate platform, an upper limit plate and a lower limit plate are fixed on the slide cylinder, the upper limit plate and the lower limit plate are respectively located on the upper and lower sides of the intermediate platform, a grinding motor is fixed below the lower limit plate, and a grinding wheel is fixed on the rotating shaft of the grinding motor; a weight block is connected to the upper end of the slide cylinder.

[0005] Furthermore, brackets are fixed on both sides of the base, a top platform is fixed on the brackets, a cylinder is fixed on the top platform, and the telescopic rod of the cylinder is fixedly connected to the middle platform; an automatic weight block replacement device is also provided on the top platform, and the automatic weight block replacement device comprises two parallel horizontal slide grooves fixed on the top platform, a support frame is slidably provided in the horizontal slide groove, a topless and bottomless weight block storage slot is fixed on the support frame, a load-bearing pin is provided on the side wall of the weight block storage slot, and a through hole matching the load-bearing pin is provided on the weight block; a connecting frame is slidably provided on the support frame, and the connecting frame is slidably connected to the side wall of the weight block storage slot at the same time, and a handle is fixed on the top edge of the connecting frame; two vertical weight block storage slots on the top platform are respectively fixed on both sides of the weight block storage slot. A slide groove, a slide rod is provided in the vertical slide groove, a No. 2 spring is connected between the slide rod and the vertical slide groove, a No. 1 rack is fixed on the slide rod, the No. 1 rack is meshed with a short gear, a long gear is coaxially fixed between the two short gears, and the No. 2 rack and the No. 3 rack are respectively meshed with each other above and below the long gear, and vertical protrusions are provided on the ends of the No. 2 rack and the No. 3 rack close to the weight block storage slot; a lifting plate is fixed at the bottom ends of the two slide rods, and the lifting plate is overlapped on the bottom plate of the connecting frame; a load-bearing pin is also provided on the side wall of the upper end of the slide cylinder, and another matching through hole is provided on the weight block; the load-bearing pin includes a pin shaft, a pin panel is fixed to the end of the pin shaft, and a No. 3 spring is provided between the pin panel and the side wall of the weight block storage slot and between the pin panel and the side wall of the slide cylinder.

[0006] Furthermore, a positioning bar is fixed on the top platform, the positioning bar is parallel to the horizontal slide groove and is provided with a plurality of wedge-shaped positioning grooves; an inverted triangle block is fixed on the bottom plate of the connecting frame, and the inverted triangle block is slidably connected to the wedge-shaped positioning grooves on the positioning bar.

[0007] Furthermore, vertical plates are fixed on both sides of the base, and a horizontal axis pin is provided on the vertical plate for horizontal sliding. A No. 4 spring is provided between the horizontal axis pin and the vertical plate, and a vertical axis pin is provided for sliding at the outer end of the horizontal axis pin. The top end of the vertical axis pin is fixedly connected to the middle platform, and the lower part of the vertical axis pin is a wedge-shaped surface.

[0008] Furthermore, a retractable rubber sleeve is fixed between the clamping ring and the middle platform, a dust suction pipe is fixed on the top of the middle platform, and the dust suction pipe is connected to a vacuum cleaner.

[0009] The retractable rubber sleeve seals the clamping ring and the middle platform, which has two benefits. One is to prevent dust from floating during the grinding process. On the other hand, during the grinding process, the ground dust is between the grinding wheel and the test block, where it is flattened or even accumulated, causing secondary grinding, which not only reduces the grinding efficiency but also leads to errors in the grinding results. This problem can be solved by using a vacuum cleaner to suck away the ground dust through a vacuum pipe.

[0010] The beneficial effects of the present invention are as follows: a detachable weight block is arranged on the grinding device of the present invention, and the required loading weight can be replaced at any time; an automatic weight block replacement device is arranged, and the weight blocks of different specifications are automatically replaced through the mutual cooperation and linkage of a cylinder, a connecting frame with a handle, a rack with a protrusion, and a gear; a vertical plate, a horizontal axis pin, a No. 4 spring, and a vertical axis pin with a wedge-shaped surface at the bottom are arranged, and the grinding device and the electronic scale can be separated during the grinding process to protect the electronic scale; through the cooperation of a vacuum cleaner and a retractable rubber sleeve, the ground powder can be sucked away in real time without affecting the up and down movement of the grinding device, which can prevent the dust from floating and prevent the powder from spreading to cause secondary grinding, thereby ultimately improving the grinding efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front schematic diagram of the overall structure of the present invention.

[0012] Figure 2 It is a side schematic diagram of the overall structure of the present invention.

[0013] Figure 3 It is a schematic diagram of the grinding device.

[0014] Figure 4 It is a schematic top view of the overall structure of the present invention.

[0015] Figure 5 yes Figure 4 Partial view of point B in the middle.

[0016] Figure 6 It is a side view of the automatic weight replacement device.

[0017] Figure 7 It is a schematic diagram of the connection between the weight block and the load-bearing pin.

[0018] In the figure, 1, base, 2, electronic scale, 3, grinding device, 301, grinding table, 302, clamping ring, 303, middle platform, 304, shaft pin, 305, No. 1 spring, 306, slide, 307, upper limit plate, 308, lower limit plate, 309, grinding motor, 310, grinding wheel, 311, weight block, 4, bracket, 5, top platform, 6, cylinder, 7, automatic replacement device for weight block, 701, horizontal slide, 702, support frame, 703, weight block storage slot, 704, load-bearing pin, 7041, pin shaft, 7042 , pin panel, 7043, spring No. 3, 705, through hole, 706, connecting frame, 7061, inverted triangle block, 707, handle, 708, vertical slide groove, 709, slide bar, 710, spring No. 2, 711, rack No. 1, 712, short gear, 713, long gear, 714, rack No. 2, 715, rack No. 3, 716, vertical protrusion, 717, lifting plate, 8, positioning bar, 9, vertical plate, 10, horizontal axis pin, 11, spring No. 4, 12, vertical axis pin, 13, retractable rubber sleeve, 14, dust suction tube, 15, vacuum cleaner. DETAILED DESCRIPTION

[0019] like Figure 1 to Figure 7 As shown, a wear resistance testing device for energy-saving architectural coatings comprises a base 1, an electronic scale 2 is fixed on the base 1, a grinding device 3 is arranged above the electronic scale 2, the grinding device 3 comprises a grinding table 301, a clamping ring 302 and an intermediate platform 303 are arranged in sequence above the grinding table 301, a plurality of shaft pins 304 with shaft pin caps are fixed on the clamping ring 302, the shaft pins 304 are slidably connected with the intermediate platform 303, and a No. 1 spring 305 is sleeved on the shaft pins 304; a slide cylinder 306 is slidably connected to the intermediate platform 303, an upper limit plate 307 and a lower limit plate 308 are fixed on the slide cylinder 306, the upper limit plate 307 and the lower limit plate 308 are respectively located at the upper and lower sides of the intermediate platform 303, a grinding motor 309 is fixed below the lower limit plate 308, and a grinding wheel 310 is fixed on the rotating shaft of the grinding motor 309; a weight block 311 is connected to the upper end of the slide cylinder 306.

[0020] Place the test block A on the grinding table 301, and use the clamping ring 302, the middle platform 303, and all the weights connected to the middle platform 303 as loads to bear pressure on the grinding motor 309 for a grinding test; on the basis of the unchanged composition of each component, the load gravity can be determined by the weight block 311 and the No. 1 spring 305. After determining the load gravity, weigh the test block A, and then use the grinding motor 309 to grind for a specified time, clean the grinding dust, and weigh it again to determine the weight loss.

[0021] Brackets 4 are fixed on both sides of the base 1, a top platform 5 is fixed on the brackets 4, a cylinder 6 is fixed on the top platform 5, and the telescopic rod of the cylinder 6 is fixedly connected to the middle platform 303; an automatic weight block replacement device 7 is also provided on the top platform 5, and the automatic weight block replacement device 7 includes two parallel horizontal slide grooves 701 fixed on the top platform 5, a support frame 702 is slidably provided in the horizontal slide grooves 701, and a topless and bottomless weight block storage slot 703 is fixed on the support frame 702. A load-bearing pin 704 is provided on the side wall of the weight block storage slot 703, and a through hole 705 matching the load-bearing pin 704 is provided on the weight block 311; a connecting frame 706 is slidably provided on the support frame 702, and the connecting frame 706 is slidably connected to the side wall of the weight block storage slot 703 at the same time, and a handle 707 is fixed on the top edge of the connecting frame 706; two vertical slide grooves 708 are fixed on both sides of the weight block storage slot 703 on the top platform 5, and a slide rod 709 is slidably provided in the vertical slide groove 708, and the slide rod 709 is slidably provided in the vertical slide groove 708. A second spring 710 is connected between the vertical slide 708 and the slide 709, a first rack 711 is fixed on the slide 709, the first rack 711 is meshed with a short gear 712, a long gear 713 is coaxially fixed between the two short gears 712, and a second rack 714 and a third rack 715 are meshed above and below the long gear 713, respectively. The second rack 714 and the third rack 715 are both provided with a vertical protrusion 716 at one end near the weight block storage slot 703; at the bottom of the two slides 709 A lifting plate 717 is fixed at the end, and the lifting plate 717 is overlapped on the bottom plate of the connecting frame 706; a load-bearing pin 704 is also provided on the side wall of the upper end of the slide 306, and another matching through hole 705 is provided on the weight block 311; the load-bearing pin 704 includes a pin shaft 7041, and a pin panel 7042 is fixed to the end of the pin shaft 7041, and a No. 3 spring 7043 is provided between the pin panel 7042 and the side wall of the weight block storage slot 703 and between the pin panel 7042 and the side wall of the slide 306.

[0022] When the grinding is completed and other weight blocks 311 need to be replaced, the cylinder 6 drives the middle platform 303 to rise. During the rising process, due to the action of the upper limit plate 307, the middle platform 303 will drive the entire slide 306 and the grinding wheel 310 below to move upward until the weight blocks 311 connected to the upper end of the slide 306 reach the top, that is, all enter the weight block storage slot 703 and stop; then, the handle 707 is lifted up to drive the connecting frame 706 to move up as a whole, and the lifting plate 717 overlapped on the bottom plate of the connecting frame 706 is also moved up, thereby driving the two slide bars 709 to move up along the two vertical slide grooves 708, driving the short gear 712 to rotate through the No. 1 rack 711, and then driving the long gear 71 3 rotates, the long gear 713 makes the second rack 714 and the third rack 715 move horizontally, and the second rack 714 and the third rack 715 are both provided with a vertical protrusion 716 at one end close to the weight block storage slot 703. During the horizontal movement, the vertical protrusion 716 of the second rack 714 will hook the bearing pin 704 on the side wall of the weight block storage slot 703 and insert it into the through hole 705 on the weight block 311. At the same time, the vertical protrusion 716 of the third rack 715 will hook the bearing pin 704 on the side wall of the upper end of the slide 306 and pull it out, so that the weight block 311 is separated from the slide 306, and the old weight block 311 is unloaded, and then a new weight block 311 is replaced.

[0023] A positioning bar 8 is fixed on the top platform 5, which is parallel to the horizontal slide groove 701 and has multiple wedge-shaped positioning grooves; an inverted triangle block 7061 is fixed on the bottom plate of the connecting frame 706, which is slidably connected to the wedge-shaped positioning grooves on the positioning bar 8.

[0024] When replacing a new weight block 311, the connecting frame 706 moves upward as a whole, so that the inverted triangle block 7061 on the bottom plate of the connecting frame 706 is separated from the positioning bar 8, and the weight block storage slot 703 is manually moved so that the weight block 311 to be replaced is aligned with the weight block automatic replacement device 7, and the handle 707 is released. Under the action of the No. 2 spring 710, the No. 2 rack 714 and the No. 3 rack 715 are respectively opposite to the movement direction of the above-mentioned unloading of the old weight block 311, that is, the No. 2 rack 714 pulls out the load-bearing pin 704 on the side wall of the weight block storage slot 703, and sends the load-bearing pin 704 on the upper side wall of the slide 306 into the new weight block 311, thereby completing the loading of the new weight block 311.

[0025] Vertical plates 9 are fixed on both sides of the base 1, and a horizontal axis pin 10 is provided on the vertical plate 9 for horizontal sliding. A No. 4 spring 11 is provided between the horizontal axis pin 10 and the vertical plate 9, and a vertical axis pin 12 is provided for sliding at the outer end of the horizontal axis pin 10. The top end of the vertical axis pin 12 is fixedly connected to the middle platform 303, and the lower part of the vertical axis pin 12 is a wedge-shaped surface.

[0026] During the grinding test, the gravity of the middle platform 303 and the parts connected thereto are loaded on the grinding wheel 310. During this process, the vertical axis pin 12 squeezes and moves the horizontal axis pin 10 horizontally to the bottom of the grinding table 301, bearing all the weight above, so that the electronic scale 2 is protected from the grinding vibration. When the grinding test is over, the cylinder 6 drives the middle platform 303 to rise. Since the lower part of the vertical axis pin 12 is a wedge-shaped surface, the horizontal axis pin 10 will slide horizontally outward and separate from the middle platform 303, and all the weight above is carried on the electronic scale 2 for weighing.

[0027] A retractable rubber sleeve 13 is fixed between the clamping ring 302 and the middle platform 303 , a dust suction pipe 14 is fixed on the top of the middle platform 303 , and a dust collector 15 is connected to the dust suction pipe 14 .

[0028] The retractable rubber sleeve 13 seals the clamping ring 302 and the middle platform 303, which has two advantages. One is to prevent dust from being dispersed during the grinding process. On the other hand, during the grinding process, the ground dust is located between the grinding wheel 310 and the test block A, where it is spread out or even accumulated, causing secondary grinding, which not only reduces the grinding efficiency but also leads to errors in the grinding results. This problem can be solved by using a vacuum cleaner 15 to suck away the ground dust through a vacuum pipe 14.

Claims

1. A device for testing the wear resistance of energy-saving architectural coatings, characterized in that: The invention comprises a base (1), an electronic scale (2) is fixed on the base (1), a grinding device (3) is arranged above the electronic scale (2), the grinding device (3) comprises a grinding table (301), a clamping ring (302) and an intermediate platform (303) are arranged above the grinding table (301), a plurality of shaft pins (304) with shaft pin caps are fixed on the clamping ring (302), the shaft pins (304) are slidably connected to the intermediate platform (303), a first spring (305) is sleeved on the shaft pin (304), and a plurality of shaft pins (304) are sleeved on the shaft pin (304). ); A slide cylinder (306) is slidably connected to the middle platform (303); an upper limit plate (307) and a lower limit plate (308) are fixed to the slide cylinder (306); the upper limit plate (307) and the lower limit plate (308) are respectively located at the upper and lower sides of the middle platform (303); a grinding motor (309) is fixed below the lower limit plate (308); a grinding wheel (310) is fixed to the rotating shaft of the grinding motor (309); a weight block (311) is connected to the upper end of the slide cylinder (306); A bracket (4) is fixed on both sides of the base (1), a top platform (5) is fixed on the bracket (4), a cylinder (6) is fixed on the top platform (5), and a telescopic rod of the cylinder (6) is fixedly connected to the middle platform (303); an automatic weight block replacement device (7) is also provided on the top platform (5) to complete the unloading of the old weight block (311) and the loading of the new weight block (311); the automatic weight block replacement device (7) comprises two parallel horizontal slide grooves (701) fixed on the top platform (5), a support frame (702) is slidably provided in the horizontal slide grooves (701), and the support frame (702) A topless and bottomless weight block storage slot (703) is fixed on the top, a load-bearing pin (704) is provided on the side wall of the weight block storage slot (703), and a through hole (705) matching the load-bearing pin (704) is provided on the weight block (311); a connecting frame (706) is slidably provided on the support frame (702), the connecting frame (706) is slidably connected to the side wall of the weight block storage slot (703), and a handle (707) is fixed on the top edge of the connecting frame (706); two vertical slide grooves (708) are respectively fixed on both sides of the weight block storage slot (703) on the top platform (5), and the vertical slide grooves (708) are provided with a handle (707) on the top edge of the connecting frame (706). A slide bar (709) is provided for sliding, a second spring (710) is connected between the slide bar (709) and the vertical slide groove (708), a first rack (711) is fixed on the slide bar (709), the first rack (711) is meshedly connected with a short gear (712), a long gear (713) is coaxially fixed between the two short gears (712), a second rack (714) and a third rack (715) are meshedly connected above and below the long gear (713), and a vertical protrusion (716) is provided at one end of the second rack (714) and the third rack (715) close to the weight block storage groove (703); A lifting plate (717) is fixed at the bottom end of each slide bar (709), and the lifting plate (717) is overlapped on the bottom plate of the connecting frame (706); a load-bearing pin (704) is also provided on the side wall of the upper end of the slide cylinder (306), and another matching through hole (705) is provided on the weight block (311); the load-bearing pin (704) includes a pin shaft (7041), and a pin panel (7042) is fixed at the end of the pin shaft (7041), and a third spring (7043) is provided between the pin panel (7042) and the side wall of the weight block storage slot (703) and between the pin panel (7042) and the side wall of the slide cylinder (306); A positioning bar (8) is fixed on the top platform (5), the positioning bar (8) is parallel to the horizontal slide groove (701) and is provided with a plurality of wedge-shaped positioning grooves; an inverted triangle block (7061) is fixed on the bottom plate of the connecting frame (706), and the inverted triangle block (7061) is slidably connected to the wedge-shaped positioning grooves on the positioning bar (8).

2. The wear resistance testing device for energy-saving architectural coatings according to claim 1, characterized in that: Vertical plates (9) are fixed on both sides of the base (1), a horizontally slidable horizontally provided on the vertical plate (9), a No. 4 spring (11) is provided between the horizontal pin (10) and the vertical plate (9), a vertical pin (12) is slidably provided on the outer end of the horizontal pin (10), the top end of the vertical pin (12) is fixedly connected to the middle platform (303), and the lower part of the vertical pin (12) is a wedge-shaped surface.

3. The wear resistance testing device for energy-saving architectural coatings according to claim 1, characterized in that: A retractable rubber sleeve (13) is fixed between the clamping ring (302) and the middle platform (303), a dust suction pipe (14) is fixed at the top of the middle platform (303), and the dust suction pipe (14) is connected to a dust collector (15).

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