Equipment for testing frost resistance of concrete admixture

Abstract

The utility model belongs to the technical field of concrete testing, and particularly discloses a concrete admixture anti-freezing performance testing device which comprises a shell and a freezing box, the freezing box is installed on the left side in the shell, a heat preservation layer is installed on the inner wall of the freezing box, a refrigerator is installed on the right side in the freezing box, and a heat preservation layer is installed on the inner wall of the refrigerator. A cover plate is clamped and fixed to the left side of the top end of the shell, and a refrigerator is longitudinally installed on the right side in the heat preservation layer. According to the equipment for testing the anti-freezing performance of the concrete admixture, the spraying cavity is formed in the right side between the freezing box and the shell, and a concrete block is inserted into a right clamping sleeve in the spraying cavity through a pull rod, so that a spraying disc mounted on the surface of a bracket can conveniently spray water to the concrete block, and the rainfall amount is simulated; and then the concrete block is inserted into the left clamping sleeve in the freezing box through the pull rod, the refrigerator works to reduce the temperature of the surrounding environment, direct freezing is facilitated after liquid is sprayed, and the problem of inconvenient spraying is solved.

Description

Technical Field

[0001] This utility model relates to the field of concrete testing technology, specifically to a testing device for the freeze-thaw resistance of concrete admixtures. Background Technology

[0002] Most building panels at present are made of concrete. In order to adapt to the surrounding environment, walls built in cold regions need to be coated with admixtures for protection. This can improve the properties of the mortar, making it more uniform and dense after solidification. In order to test the antifreeze effect of the admixtures, testing equipment is required.

[0003] Most of these devices have a freezing function, which uses a refrigerator to freeze concrete blocks that have come into contact with water. However, the spraying needs to be done on the outside of the device, otherwise the faucets will freeze easily. If the device needs to be moved back and forth, water droplets will inevitably splash onto the ground, which is not conducive to maintaining the cleanliness of the surrounding environment.

[0004] Now, a novel testing equipment for the freeze-thaw resistance of concrete admixtures is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a testing equipment for the antifreeze performance of concrete admixtures, so as to solve the problem of inconvenient spraying mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a test equipment for the antifreeze performance of concrete admixtures, comprising an outer shell and a freezing chamber. The freezing chamber is installed on the left side inside the outer shell, and an insulation layer is installed on the inner wall of the freezing chamber. A cooler is installed on the right side inside the freezing chamber. A cover plate is snapped and fixed on the left side of the top of the outer shell. The cooler is longitudinally installed on the right side inside the insulation layer. A spray chamber is provided on the right side between the freezing chamber and the outer shell, and a bracket is provided in the lower right corner of the spray chamber. Two sets of spray discs are installed on the left side of the bracket. An inclined platform is welded to the lower part of the spray chamber, and a right retaining sleeve is fixed on the left side of the top of the inclined platform. A motor is installed on the right side of the center of the bottom of the outer shell. A left retaining sleeve is fixed in the lower left corner inside the freezing chamber, and a retaining block is fixedly inserted into the inside of the left retaining sleeve.

[0007] As a further technical solution of this utility model, the left and right ferrules have the same specifications, and the top of the output end of the motor is fixedly connected to the right ferrule.

[0008] As a further technical solution of this utility model, a support platform is welded to the top of the card block, and positioning holes are provided laterally at the front and rear ends of the surface of the support platform. Standing feet are provided on both sides of the front and rear ends of the top of the support platform, and card plates are welded to the top of the standing feet. Concrete blocks are fixed between the card plates. Slots are provided laterally at the bottom of the inside of the card plates, and insert rods are inserted laterally between the slots. A middle block is fixed at the center of the insert rod, and a pull rod is fixed at the top of the middle block. Bolt 2 is threaded to the outside of the standing feet. Screw holes are provided on the surface of the insert rod, and bolt 1 is threaded to the surface of the card plate.

[0009] As a further technical solution of this utility model, the insertion rod and the slot are on the same horizontal plane, and the insertion rod moves left and right inside the card plate.

[0010] As a further technical solution of this utility model, the bottom end of the second bolt is embedded in the positioning hole, and the shank of the first bolt is embedded in the screw hole.

[0011] As a further technical solution of this utility model, a slide rail is installed on the right side of the inner wall of the spray chamber, and a bracket is attached to the outer side of the slide rail. A slider is welded to the center of the right side of the bracket, and a gear is movably connected between the upper and lower parts inside the slider. A ball is embedded in the bottom of the slider. A slide rail is arranged horizontally inside the slide rail, and a rack is fixed on the inner wall of the slide rail. A motor is fixed to the top of the slider. An L-shaped frame is installed on the right side of the outer shell, and two sets of valves are installed on the right side of the L-shaped frame. A hose is installed between the left side of the valve and the bracket. Two sets of through grooves are provided on the lower right side of the outer shell. A liquid pump is installed on the lower right corner of the outer shell.

[0012] As a further technical solution of this utility model, the gear is meshed on the surface of the rack, and the bottom of the output end of the second motor is fixedly connected to the gear.

[0013] As a further technical solution of this utility model, the hose is embedded in the through groove, and the hose enters and exits the through groove from the left and right.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the concrete admixture antifreeze performance testing equipment not only facilitates spraying and freezing and enables rapid fixing of concrete blocks, but also allows for adjustment of the spraying position;

[0015] (1) A spray chamber is provided on the right side between the freezer and the outer shell. A concrete block is fixed on the support platform at the top of the card block. The concrete block can be inserted into the right card sleeve in the spray chamber by the pull rod, so that the spray plate installed on the support surface can spray water on it to simulate the amount of rain. Then, the concrete block is inserted into the left card sleeve in the freezer by the pull rod, and the temperature of the surrounding environment is lowered by the operation of the refrigeration unit. This facilitates the spraying of liquid and then direct freezing, and allows for quick observation of the changes in the concrete block at the first moment.

[0016] (2) By welding a clamping plate to the top of the foot, move the foot and clamping plate along the positioning holes set at the front and rear ends of the support platform surface, rotate the bolts one at the front and rear, and lock the insert rod inside the clamping plate by the bolts one through the screw holes. The clamping structure can be adjusted according to the thickness of the concrete block, making it convenient to hold the pull rod and move the object. Finally, install the clamping plate on the support platform through the bolts two threaded on the foot, so that people can move left and right to different chambers.

[0017] (3) By installing a slide rail on the right side of the inner wall of the spray chamber, the gear is rotated after starting the second motor. The slider is moved along the inner slide rail by the meshing of the gear and rack. The ball can reduce the frictional resistance below. The bracket and spray plate outside the slider also move in an arc along the slide rail. The valve is started at the same time. The water pipe is connected to the outside through the hose and then the clean water is delivered to the spray plate through the through groove to prevent the hose from being squeezed. The angle of the right clamp is adjusted by the first motor to simulate rainwater spraying. Attached Figure Description

[0018] Figure 1 This is a frontal cross-sectional view of the present invention.

[0019] Figure 2 This is a front view structural diagram of the concrete block of this utility model;

[0020] Figure 3 This is a partial cross-sectional enlarged structural schematic diagram of the present invention;

[0021] Figure 4 This is a front view cross-sectional structural diagram of the slide rail of this utility model.

[0022] In the diagram: 1. Outer shell; 2. Freezer; 3. Insulation layer; 4. Left retaining sleeve; 5. Clamping block; 6. Support platform; 7. Clamping plate; 8. Concrete block; 9. Tie rod; 10. Cover plate; 11. Refrigerator; 12. Spray chamber; 13. Bracket; 14. Hose; 15. Valve; 16. L-shaped frame; 17. Liquid pump; 18. Inclined platform; 19. Right retaining sleeve; 20. Motor 1; 21. Positioning hole; 22. Bolt 1; 23. Slot; 24. Insert rod; 25. Intermediate block; 26. Standing foot; 27. Bolt 2; 28. Slide rail; 29. ​​Slide track; 30. Motor 2; 31. Rack; 32. Gear; 33. Ball bearing; 34. Spray disc; 35. Through groove; 36. Screw hole; 37. Slider. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 An embodiment of this utility model provides a test equipment for the antifreeze performance of concrete admixtures, comprising an outer shell 1 and a freezing chamber 2. The freezing chamber 2 is installed on the left side inside the outer shell 1, and an insulation layer 3 is installed on the inner wall of the freezing chamber 2. A cooler 11 is installed on the right side inside the freezing chamber 2. A cover plate 10 is snapped and fixed on the left side of the top of the outer shell 1. The cooler 11 is installed longitudinally on the right side inside the insulation layer 3. A spray chamber 12 is provided on the right side between the freezing chamber 2 and the outer shell 1, and a bracket 13 is provided in the lower right corner inside the spray chamber 12. Two sets of spray discs 34 are installed on the left side of the bracket 13. An inclined platform 18 is welded to the lower part inside the spray chamber 12, and a right retaining sleeve 19 is fixed on the left side of the top of the inclined platform 18. A motor 20 is installed on the right side of the center of the bottom of the outer shell 1. A left retaining sleeve 4 is fixed in the lower left corner inside the freezing chamber 2, and a retaining block 5 is fixedly inserted into the inside of the left retaining sleeve 4.

[0025] The left ferrule 4 and the right ferrule 19 have the same specifications, and the top of the output end of motor 20 is fixedly connected to the right ferrule 19;

[0026] Specifically, such as Figure 1 As shown, a concrete block 8 is fixed on the support platform 6 at the top of the card block 5. The concrete block 8 can be inserted into the right card sleeve 19 in the spray chamber 12 by the pull rod 9, so that the spray plate 34 installed on the surface of the bracket 13 can spray water on it to simulate the amount of rain. Then, the concrete block 8 is inserted into the left card sleeve 4 in the freezer 2 by the pull rod 9, and waits for the refrigeration unit 11 to work to lower the temperature of the surrounding environment, so that the sprayed liquid can be directly frozen.

[0027] A support platform 6 is welded to the top of the card block 5, and positioning holes 21 are provided laterally at the front and rear ends of the surface of the support platform 6. The front and rear ends of the top of the support platform 6 are provided with feet 26, and card plates 7 are welded to the top of the feet 26. Concrete blocks 8 are fixed between the card plates 7. Slots 23 are provided laterally at the bottom inside the card plates 7, and insert rods 24 are inserted laterally between the slots 23. A middle block 25 is fixed at the center of the insert rod 24, and a pull rod 9 is fixed at the top of the middle block 25. Bolt 27 is threaded to the outside of the foot 26. Screw holes 36 are provided on the surface of the insert rod 24. Bolt 22 is threaded to the surface of the card plate 7.

[0028] The insertion rod 24 and the slot 23 are on the same horizontal plane. The insertion rod 24 moves left and right inside the card plate 7. The bottom end of the second bolt 27 is embedded in the positioning hole 21, and the rod of the first bolt 22 is embedded in the screw hole 36.

[0029] Specifically, such as Figure 1 and Figure 2 As shown, move the foot 26 and the clamping plate 7 along the positioning holes 21 set at the front and rear ends of the support platform 6, rotate the bolts 22 at the front and rear, and lock the insert rod 24 inside the clamping plate 7 by means of the bolts 22 passing through the screw holes 36. The clamping structure can be adjusted according to the thickness of the concrete block 8, so that it is convenient to hold the pull rod 9 and move it. Finally, install the clamping plate 7 on the support platform 6 through the bolts 27 threaded on the foot 26.

[0030] A slide rail 28 is installed on the right side of the inner wall of the spray chamber 12, and a bracket 13 is attached to the outer side of the slide rail 28. A slider 37 is welded to the center of the right side of the bracket 13, and a gear 32 is movably connected between the upper and lower parts inside the slider 37. A ball bearing 33 is embedded at the bottom of the slider 37. A slide rail 29 is arranged horizontally inside the slide rail 28, and a rack 31 is fixed on the inner wall of the slide rail 29. A motor 30 is fixed at the top of the slider 37. An L-shaped frame 16 is installed on the right side of the surface of the outer shell 1, and two sets of valves 15 are installed on the right side of the L-shaped frame 16. A hose 14 is installed between the left side of the valve 15 and the bracket 13. Two sets of through grooves 35 are arranged at the lower right side of the outer shell 1. A liquid pump 17 is installed at the lower right corner of the outer shell 1.

[0031] Gear 32 is meshed on the surface of rack 31. The bottom of the output end of motor 30 is fixedly connected to gear 32. Hose 14 is embedded in through groove 35 and moves in and out of through groove 35 from left to right.

[0032] Specifically, such as Figure 1 , Figure 3 and Figure 4As shown, after starting motor 2 30, the gear 32 rotates. The meshing of gear 32 and rack 31 moves slider 37 along slide rail 28 inner slide 29. Ball bearing 33 can reduce the frictional resistance below. The bracket 13 and spray disc 34 outside slider 37 also move in an arc along slide rail 28. At the same time, valve 15 is started. Water is connected to the external water pipe through hose 14 and then passed through through groove 35 to deliver clean water to spray disc 34. The hose 14 is prevented from being squeezed. Motor 20 is used to finely adjust the angle of right clamp 19 to carry out normal water supply spraying.

[0033] Working principle: In use, the foot 26 and the clamping plate 7 are first moved along the positioning holes 21 set at the front and rear ends of the support platform 6. The bolts 22 at the front and rear are rotated so that the bolts 22 pass through the screw holes 36, locking the insertion rod 24 inside the clamping plate 7. The clamping structure can be adjusted according to the thickness of the concrete block 8 to facilitate the movement of the object after holding the pull rod 9. Finally, the clamping plate 7 is installed on the support platform 6 through the bolts 27 threaded on the foot 26. The concrete block 8 is fixed on the support platform 6 at the top of the clamping block 5. The concrete block 8 can be inserted into the right clamping sleeve 19 in the spray chamber 12 through the pull rod 9, so that the spray plate 34 installed on the surface of the bracket 13 can spray water on it to simulate the amount of rainfall. Then, the concrete block 8 is inserted into the left clamping sleeve 4 in the freezer 2 through the pull rod 9, and the freezer 11 is allowed to work and reduce the temperature. The ambient temperature facilitates the direct freezing of the sprayed liquid, allowing for rapid observation of changes in the concrete block 8. After removal, hot water is sprayed repeatedly to observe and record surface cracks, fissures, and gaps. During this process, motor 2 30 can be started to rotate gear 32. The meshing of gear 32 and rack 31 moves slider 37 along slide rail 28's internal slide 29. Ball bearings 33 reduce frictional resistance below. The support 13 and spray plate 34 outside slider 37 also move in an arc along slide rail 28. Simultaneously, valve 15 is activated, connecting to an external water pipe via hose 14, which then passes through slot 35 to deliver clean water to spray plate 34, preventing hose 14 from being squeezed. Motor 1 20 finely adjusts the angle of right clamp 19 for normal water supply spraying. The cooler 11 used in this case is existing technology and is not described in detail.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A test equipment for the freeze-thaw resistance of concrete admixtures, comprising an outer shell (1) and a freezing chamber (2), characterized in that: A freezer (2) is installed on the left side inside the outer shell (1), and an insulation layer (3) is installed on the inner wall of the freezer (2). A cooler (11) is installed on the right side inside the freezer (2). A cover plate (10) is snapped and fixed on the left side of the top of the outer shell (1). The cooler (11) is installed longitudinally on the right side inside the insulation layer (3). A spray chamber (12) is provided on the right side between the freezer (2) and the outer shell (1). A bracket (13) is provided in the lower right corner of the interior. Two sets of spray discs (34) are installed on the left side of the bracket (13). An inclined platform (18) is welded to the lower part of the spray chamber (12). A right ferrule (19) is fixed to the left side of the top of the inclined platform (18). A motor (20) is installed on the right side of the center of the bottom of the outer shell (1). A left ferrule (4) is fixed in the lower left corner of the interior of the freezer (2). A card block (5) is fixedly inserted into the interior of the left ferrule (4).

2. The equipment for testing the freeze-thaw resistance of concrete admixtures according to claim 1, characterized in that: The left ferrule (4) and the right ferrule (19) have the same specifications, and the top of the output end of the motor (20) is fixedly connected to the right ferrule (19).

3. The equipment for testing the freeze-thaw resistance of concrete admixtures according to claim 1, characterized in that: The top of the card block (5) is welded with a support platform (6), and the front and rear ends of the surface of the support platform (6) are respectively provided with positioning holes (21) laterally. The front and rear ends of the top of the support platform (6) are respectively provided with feet (26), and the top of the feet (26) is welded with a card plate (7). A concrete block (8) is fixed between the card plates (7). The lower part of the inside of the card plate (7) is provided with a slot (23), and a plug rod (24) is inserted between the slots (23). A middle block (25) is fixed at the center of the plug rod (24), and a pull rod (9) is fixed at the top of the middle block (25). The external thread of the foot (26) is connected with a bolt two (27). The surface of the plug rod (24) is provided with a screw hole (36), and the surface of the card plate (7) is connected with a bolt one (22).

4. The equipment for testing the freeze-thaw resistance of concrete admixtures according to claim 3, characterized in that: The insertion rod (24) and the slot (23) are on the same horizontal plane, and the insertion rod (24) moves left and right inside the card plate (7).

5. The equipment for testing the freeze-thaw resistance of concrete admixtures according to claim 3, characterized in that: The bottom end of the second bolt (27) is embedded in the positioning hole (21), and the shank of the first bolt (22) is embedded in the screw hole (36).

6. The equipment for testing the freeze-thaw resistance of concrete admixtures according to claim 1, characterized in that: A slide rail (28) is installed on the right side of the inner wall of the spray chamber (12), and a bracket (13) is attached to the outer side of the slide rail (28). A slider (37) is welded to the center of the right side of the bracket (13), and a gear (32) is movably connected between the upper and lower parts inside the slider (37). A ball bearing (33) is embedded in the bottom of the slider (37). A slide rail (29) is arranged horizontally inside the slide rail (28), and a fixed inner wall of the slide rail (29) is provided. There is a rack (31), the top of the slider (37) is fixed with a motor (30), an L-shaped frame (16) is installed on the right side of the surface of the outer shell (1), and two sets of valves (15) are installed on the right side of the L-shaped frame (16). A hose (14) is installed between the left side of the valve (15) and the bracket (13). Two sets of through grooves (35) are provided on the lower right side of the outer shell (1). A liquid pump (17) is installed on the lower right corner of the outer shell (1).

7. The equipment for testing the freeze-thaw resistance of concrete admixtures according to claim 6, characterized in that: The gear (32) is meshed on the surface of the rack (31), and the bottom of the output end of the second motor (30) is fixedly connected to the gear (32).

8. The equipment for testing the freeze-thaw resistance of concrete admixtures according to claim 6, characterized in that: The hose (14) is embedded in the through groove (35), and the hose (14) enters and exits the through groove (35) from the left and right.

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