Building engineering material waterproof performance detection device

Abstract

The invention relates to the technical field of detection devices, and discloses a constructional engineering material waterproof performance detection device which comprises a base, a stand column is fixedly installed on the upper surface of the base, a rotating shaft is rotatably installed between the inner walls of the top end of the stand column, and a rotating block is fixedly installed on the outer surface of the rotating shaft. A placing plate is fixedly mounted at the other end of the rotating block, and two limiting grooves are symmetrically formed in the upper surface of the placing plate. Due to the fact that the elastic acting force of the second spring is determined, the weight of the waterproof wood board increased relative to the weight before the waterproof wood board is wetted is determined, and the waterproof performance of the waterproof wood board can be obtained according to the amount of time needed for sucking water with the same weight into the waterproof wood board. The test process is simple, and the test data accuracy is high.

Description

Technical Field

[0001] The invention relates to the technical field of detection devices, and in particular to a device for detecting the waterproof performance of building engineering materials. Background Art

[0002] Building materials are various materials used in construction projects. There are many types of building materials, which can be roughly divided into: inorganic materials, including metal materials (including ferrous metal materials and non-ferrous metal materials) and non-metal materials (such as natural stone, burnt earth products, cement, concrete and silicate products, etc.); organic materials, including plant materials, synthetic polymer materials (including plastics, coatings, adhesives) and asphalt materials; composite materials, including asphalt concrete, polymer concrete, etc., are generally composed of inorganic non-metallic materials and organic materials. Among them, wooden building materials will be decorated and waterproofed before use, and wooden materials will be tested for waterproofness before leaving the factory.

[0003] An existing building material waterproof performance testing device (Announcement No.: CN114894694A) has at least the following disadvantages:

[0004] When the above patent is in use, the operator attaches the device to the surface of the wooden building material through the suction cup, and then uses the inclined water spray head, side water spray head and top water spray brush provided by the bottom spraying mechanism to spray water on the wooden material at the same time, and then uses the humidity detection probe to detect the humidity. In the above patent, the humidity detection probe and the water spray nozzle are both located in the same space. The water mist sprayed by the nozzle will float in the air, causing the humidity detection probe to produce errors when detecting humidity, making the data of the waterproof detection of the wooden building material inaccurate. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a device for detecting the waterproof performance of building materials.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A device for detecting waterproof performance of building materials, comprising a base, a column is fixedly installed on the upper surface of the base, a rotating shaft is rotatably installed between the inner walls of the top of the column, a rotating block is fixedly installed on the outer surface of the rotating shaft, a placement plate is fixedly installed on the other end of the rotating block, two limit grooves are symmetrically provided on the upper surface of the placement plate, a waterproof wooden board is slidably inserted between the inner walls of the two limit grooves, a dovetail slide groove is provided on the upper surface of the middle position of the placement plate, a dovetail slide rail is slidably installed on the inner wall of the dovetail slide groove, a limit plate is fixedly installed on the outer surface of the dovetail slide rail near the bottom end, the bottom end of the waterproof wooden board abuts against the upper surface of the limit plate, an L-shaped rod is fixedly installed on the top of the dovetail slide rail, a pressure column is fixedly installed on the lower surface of the top of the L-shaped rod, a second spring is sleeved on the outer surface of the pressure column, the top of the second spring is fixedly connected to the lower surface of the L-shaped rod, the bottom of the second spring is fixedly connected to the top of the placement plate, a pressure sensor is fixedly installed on the top of the placement plate, and the pressure sensor is arranged directly below the pressure column.

[0008] As a further solution of the present invention, limiting sliding sleeves are fixedly installed on the outer surfaces of the opposite sides of the placement plate, a square sliding rod is slidably installed on the inner wall of the limiting sliding sleeve, a rack is fixedly installed on the bottom end of the square sliding rod, a water box is rotatably installed between the bottom ends of the two racks, the water box is arranged directly below the waterproof wooden board, and block blocks are fixedly installed on the outer surfaces of the opposite sides of the placement plate.

[0009] As a further solution of the present invention, a sliding column is fixedly installed on the top of the square sliding rod, and the bottom end of the sliding column passes through the outer surface of the limiting sliding sleeve and is slidably installed thereon, and the bottom end of the sliding column is abutted against the upper surface of the stop block, and the outer surface of the sliding column is sleeved with a first spring, and the top end of the first spring is fixedly connected to the lower surface of the top of the square sliding rod, and the bottom end of the first spring is fixedly connected to the upper surface of the limiting sliding sleeve, and two pull ropes are symmetrically fixedly installed on the upper surface of the water box, and the top ends of the two pull ropes are fixedly connected to the bottom end of the placement plate.

[0010] As a further solution of the present invention, a group of support blocks are fixedly installed on the outer surfaces of the opposite sides of the placement plate in groups of two, and a group of two support blocks are arranged above the rack. A limiting slide bar is fixedly installed between a group of two support blocks, and sliding sleeves are slidably installed on the outer surfaces of the two limiting slide bars. A cross bar is fixedly installed between the two sliding sleeves, and a rubber scraper is fixedly installed on the lower surface of the cross bar, and the bottom of the rubber scraper is against the upper surface of the waterproof wooden board.

[0011] As a further solution of the present invention, a group of pulleys are rotatably installed on the outer surfaces of the placement plate on both sides, and a group of two of the pulleys are sleeved on the outer surfaces of a group of two pulleys. The bottom end of the sliding sleeve is fixedly connected to the upper surface of the belt, and a gear is fixedly installed on one end of the pulley close to the rack. The gear is meshed with the rack, and the gear is arranged below the rack. Electromagnets are fixedly installed on the outer surfaces of the placement plate close to the tops of the two square sliding rods, and an iron block is fixedly installed on the tops of the square sliding rods.

[0012] As a further solution of the present invention, the fulcrum for the rotational installation of the water box and the rack is arranged on the outer surface of the water box at both ends away from the pull rope, and the end surfaces at the opposite ends of the water box are fixedly installed with limit blocks, and the limit blocks are arranged on the side of the rack away from the pull rope and against its outer surface, and the limit blocks are arranged above the fulcrum for the rotational installation of the water box and the rack.

[0013] As a further solution of the present invention, an electric telescopic rod is rotatably mounted on the outer surface of the column close to the placement plate, the telescopic end of the electric telescopic rod is rotatably mounted on the lower surface of the placement plate close to the bottom end, one end of the rotating shaft passes through the outer surface of the column and a pointer is fixedly mounted thereon, and a dial is provided on the outer surface of the column close to the pointer.

[0014] As a further solution of the present invention, the end surfaces of the rotation center at both ends of the rotating shaft are fixedly installed with rotating arms, and a water spray pipe is fixedly installed between the outer surfaces of the two rotating arms close to the top ends. A plurality of nozzles are fixedly installed at equal intervals on the outer surface of the water spray pipe, and the nozzles are arranged above the waterproof wooden board. A water pipe joint is fixedly installed on the outer surface of the water spray pipe, and the water pipe joint is connected with the nozzle through the water spray pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Since the elastic force of the second spring is certain, the weight added by the waterproof wooden board before being soaked is certain. The time required for the waterproof wooden board to absorb the same weight of water can be used to obtain the waterproof performance of the waterproof wooden board. When the waterproof performance of the waterproof wooden board is tested by the device, the test process is simple and the test data is highly accurate;

[0017] 2. By controlling the extension and retraction movement of the telescopic end of the electric telescopic rod, the placement plate is driven to rotate around the rotating shaft, and the pointer is driven to rotate through the rotating shaft to make the pointer point to the corresponding position of the dial, and then the cut fixed-size waterproof wooden board is inserted into the interior of the limit groove, and the bottom end of the waterproof wooden board is against the upper surface of the limit plate. The inclination angle of the waterproof wooden board can be adjusted through this device to simulate the different angles of the waterproof wooden board in actual installation. Since the length of time that rainwater stays at different angles is different, the waterproof effect of the waterproof wooden board will also be greatly different, which increases the practicality of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a device for testing the waterproof performance of construction materials proposed by the present invention;

[0019] Figure 2 This is a left-side structural schematic diagram of a device for testing the waterproof performance of construction materials proposed by the present invention;

[0020] Figure 3 This is a schematic diagram of the top view of a device for testing the waterproof performance of construction materials proposed by the present invention;

[0021] Figure 4 A schematic diagram of a placement plate of a device for testing the waterproof performance of construction materials proposed by the present invention;

[0022] Figure 5 A left-side schematic diagram of a placement plate of a device for testing the waterproof performance of construction materials proposed by the present invention;

[0023] Figure 6 A schematic diagram of a dovetail chute of a device for testing the waterproof performance of construction materials proposed by the present invention;

[0024] Figure 7 A schematic diagram of a rack of a device for testing the waterproof performance of construction materials proposed by the present invention;

[0025] Figure 8 for Figure 5 A partial enlarged schematic diagram in the middle;

[0026] Fig. 9 for Figure 5 A partial enlarged schematic diagram of point B in the middle.

[0027] In the figure: 1, base; 2, column; 3, rotating block; 4, placing plate; 401, limiting groove; 402, dovetail slide groove; 403, dovetail slide rail; 404, limiting plate; 5, rotating arm; 6, water spray pipe; 7, nozzle; 8, water pipe joint; 9, dial; 10, pointer; 11, electric telescopic rod; 12, waterproof wooden board; 13, support block; 14, limiting slide rod; 15, sliding sleeve; 16, cross bar; 17, rubber scraper; 18, pulley; 19, belt; 20, gear; 21, limiting slide sleeve; 22, block; 23, rack; 24, slide column; 25, first spring; 26, electromagnet; 27, iron block; 28, water box; 29, pull rope; 30, limiting block; 31, L-shaped rod; 32, pressure column; 33, pressure sensor; 34, second spring. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Reference Figure 1-Figure 9A device for testing the waterproof performance of construction engineering materials comprises a base 1, a column 2 is fixedly installed on the upper surface of the base 1, a rotating shaft is rotatably installed between the inner walls of the top of the column 2, a rotating block 3 is fixedly installed on the outer surface of the rotating shaft, a placing plate 4 is fixedly installed on the other end of the rotating block 3, two limiting grooves 401 are symmetrically provided on the upper surface of the placing plate 4, a waterproof wooden board 12 is slidably inserted between the inner walls of the two limiting grooves 401, a dovetail slide groove 402 is provided on the upper surface of the middle position of the placing plate 4, a dovetail slide rail 403 is slidably installed on the inner wall of the dovetail slide groove 402, and the dovetail slide rail 403 is slidably installed on the inner wall of the dovetail slide groove 402. 03 A limit plate 404 is fixedly installed on the outer surface near the bottom end, the bottom end of the waterproof wooden board 12 is against the upper surface of the limit plate 404, the top of the dovetail slide rail 403 is fixedly installed with an L-shaped rod 31, the lower surface of the top of the L-shaped rod 31 is fixedly installed with a pressure column 32, the outer surface of the pressure column 32 is sleeved with a second spring 34, the top of the second spring 34 is fixedly connected to the lower surface of the L-shaped rod 31, the bottom end of the second spring 34 is fixedly connected to the top of the placement plate 4, the top of the placement plate 4 is fixedly installed with a pressure sensor 33, and the pressure sensor 33 is arranged directly below the pressure column 32.

[0032] As the time that the waterproof wooden board 12 is sprayed with water increases, the interior of the waterproof wooden board 12 will slowly absorb some water, causing the weight of the waterproof wooden board 12 to gradually increase. When the weight of the waterproof wooden board 12 increases, the dovetail slide rail 403 will slide downward through the limit plate 404, and the dovetail slide rail 403 will drive the pressure column 32 to move downward through the L-shaped rod 31. When the pressure column 32 moves down to contact with the pressure sensor 33, an electrical signal will be sent out, and the water pump will be stopped through the electrical signal, thereby causing the nozzle 7 to stop spraying water. The operator takes out the waterproof wooden board 12. Since the elastic force of the second spring 34 is certain, the weight increase of the waterproof wooden board 12 before being soaked is certain. The time required for the waterproof wooden board 12 to absorb the same weight of water can be used to determine the waterproof performance of the waterproof wooden board 12. When the waterproof performance of the waterproof wooden board 12 is tested by this device, the test process is simple and the test data is highly accurate.

[0033] In this embodiment, the outer surfaces of the two opposite sides of the placement plate 4 are fixedly installed with limit sleeves 21, the inner wall of the limit sleeve 21 is slidably installed with a square slide bar, the bottom end of the square slide bar is fixedly installed with a rack 23, and a water box 28 is rotatably installed between the bottom ends of the two racks 23. The water box 28 is arranged directly below the waterproof wooden board 12, and the outer surfaces of the two opposite sides of the placement plate 4 are fixedly installed with stoppers 22. The top of the square slide bar is fixedly installed with a slide column 24, the bottom end of the slide column 24 penetrates the outer surface of the limit sleeve 21 and is slidably installed therewith, and the bottom end of the slide column 24 is against the upper surface of the stopper 22, and the outer surface of the slide column 24 is sleeved with a first spring 25. The top end of the spring 25 is fixedly connected to the lower surface of the top of the square slide rod, the bottom end of the first spring 25 is fixedly connected to the upper surface of the limiting sliding sleeve 21, and two pull ropes 29 are symmetrically fixedly installed on the upper surface of the water box 28. The top ends of the two pull ropes 29 are fixedly connected to the bottom end of the placement plate 4, and the fulcrum for the rotational installation of the water box 28 and the rack 23 is arranged on the outer surface of the water box 28 away from the pull rope 29 at both ends. The end surfaces of the water box 28 at both ends are fixedly installed with limit blocks 30, and the limit blocks 30 are arranged on the side of the rack 23 away from the pull rope 29 and against its outer surface. The limit blocks 30 are arranged above the fulcrum for the rotational installation of the water box 28 and the rack 23.

[0034] When the water box 28 moves down to the point where the pull rope 29 is fully straightened, the water box 28 will continue to move down due to inertia. At this time, the water box 28 is driven to rotate under the force of the pull rope 29, so that the water collected inside the water box 28 is discharged at an angle, which is convenient for the reset movement of the water box 28. The rotation fulcrum of the water box 28 is offset from the center of gravity so that it can be reset again by its own gravity.

[0035] In this embodiment, the outer surface of the placement plate 4 near the top of the two square slide bars is fixedly installed with an electromagnet 26, the top of the square slide bar is fixedly installed with an iron block 27, and the outer surfaces of the opposite sides of the placement plate 4 are fixedly installed with a group of support blocks 13 in pairs, a group of two support blocks 13 is arranged above the rack 23, a group of two support blocks 13 is fixedly installed between a group of limited slide bars 14, the outer surfaces of the two limited slide bars 14 are slidably installed with sliding sleeves 15, and a cross bar 16 is fixedly installed between the two sliding sleeves 15. A rubber scraper 17 is fixedly installed on the lower surface of the cross bar 16, and the bottom of the rubber scraper 17 is against the upper surface of the waterproof wooden board 12. A group of pulleys 18 are rotatably installed on the outer surfaces of the opposite sides of the placement board 4 in groups of two. The outer surfaces of a group of two pulleys 18 are sleeved with belts 19. The bottom end of the sliding sleeve 15 is fixedly connected to the upper surface of the belt 19. A gear 20 is fixedly installed on one end of the pulley 18 close to the rack 23. The gear 20 is meshed with the rack 23, and the gear 20 is arranged below the rack 23.

[0036] The electromagnet 26 is controlled by an electrical signal to release its magnetism, so that the iron block 27 is no longer attracted by the electromagnet 26, and the rack 23 is driven to slide downward through the water box 28, the rack 23 drives the gear 20 to rotate, the gear 20 drives the pulley 18 to rotate, the pulley 18 drives the sleeve 15 to slide downward along the outer surface of the limiting slide bar 14 through the belt 19, the sleeve 15 drives the rubber scraper 17 to move downward through the cross bar 16 to scrape off the residual moisture on the surface of the waterproof wooden board 12, and the device is used to prevent the weight of the residual moisture on the surface of the waterproof wooden board 12 from affecting the moisture absorbed by the waterproof wooden board 12. If the weight of the waterproof wooden board 12 is not increased enough after the moisture is scraped off, the pressure column 32 will leave the pressure sensor 33, and at this time, water will be sprayed out from the nozzle 7 again. Since the waterproof wooden board 12 is vertical or inclined, there is less moisture remaining on its surface.

[0037] In this embodiment, an electric telescopic rod 11 is rotatably installed on the outer surface of the column 2 near the placement plate 4. The telescopic end of the electric telescopic rod 11 is rotatably installed on the lower surface of the placement plate 4 near the bottom end. One end of the rotating shaft passes through the outer surface of the column 2 and a pointer 10 is fixedly installed thereon. A dial 9 is provided on the outer surface of the column 2 near the pointer 10.

[0038] By controlling the extension and retraction movement of the telescopic end of the electric telescopic rod 11, the placement plate 4 is driven to rotate around the rotating shaft, and the pointer 10 is driven to rotate through the rotating shaft, so that the pointer 10 points to the corresponding position of the dial 9, and then the cut fixed-size waterproof wooden board 12 is inserted into the interior of the limiting groove 401, and the bottom end of the waterproof wooden board 12 is against the upper surface of the limiting plate 404. The inclination angle of the waterproof wooden board 12 can be adjusted through this device to simulate different angles of the waterproof wooden board 12 in actual installation. Since the length of time that rainwater stays at different angles is different, the waterproof effect of the waterproof wooden board 12 will also be greatly different, thereby increasing the practicality of the detection device.

[0039] In this embodiment, the end faces of the rotation centers at both ends of the rotating shaft are fixedly installed with rotating arms 5, and a water spray pipe 6 is fixedly installed between the outer surfaces of the two rotating arms 5 near the top ends. A plurality of nozzles 7 are fixedly installed at equal intervals on the outer surface of the water spray pipe 6. The nozzles 7 are arranged above the waterproof wooden board 12, and a water pipe joint 8 is fixedly installed on the outer surface of the water spray pipe 6. The water pipe joint 8 is connected to the nozzle 7 through the water spray pipe 6.

[0040] The water spray pipe 6 is connected to an external water pump through a water pipe joint 8 and a hose, and then the water pump is turned on to allow the test water to be sprayed from the nozzle 7 onto the outer surface of the waterproof wooden board 12. The sprayed water will slide from the outer surface of the waterproof wooden board 12 near the top to the inside of the water box 28 at the bottom.

[0041] In this embodiment, when the placement plate 4 is tilted to the maximum angle, the water box 28 can also receive enough water to drive the rack 23 to slide downward.

[0042] It should be noted that when the present invention is in use, the operator controls the extension and retraction of the telescopic end of the electric telescopic rod 11 to drive the placement plate 4 to rotate around the shaft, and drives the pointer 10 to rotate through the shaft, so that the pointer 10 points to the corresponding position of the dial 9, and then inserts the cut fixed-size waterproof wooden board 12 into the inside of the limiting groove 401, and the bottom end of the waterproof wooden board 12 is against the upper surface of the limiting plate 404. The inclination angle of the waterproof wooden board 12 can be adjusted by the device to simulate different angles of the waterproof wooden board 12 in actual installation. Since the length of time that rainwater stays at different angles is different, the waterproof effect of the waterproof wooden board 12 will also be greatly different, which increases the practicality of the detection device;

[0043] After the waterproof wooden board 12 is placed, the water spray pipe 6 is connected to the external water pump through the water pipe joint 8 and the hose, and then the water pump is turned on to spray the test water from the nozzle 7 to the outer surface of the waterproof wooden board 12. The sprayed water will slide from the outer surface of the waterproof wooden board 12 near the top to the inside of the water holding box 28 at the bottom. As the time when the waterproof wooden board 12 is sprayed with water increases, the inside of the waterproof wooden board 12 will slowly absorb part of the water, so that the weight of the waterproof wooden board 12 gradually increases. When the weight of the waterproof wooden board 12 increases, it will drive the dovetail slide 403 to slide downward through the limit plate 404, and the dovetail slide 403 passes through the L The rod 31 drives the pressure column 32 to move downward. When the pressure column 32 moves downward to contact the pressure sensor 33, an electrical signal is sent out. The electrical signal stops the water pump, thereby stopping the nozzle 7 from spraying water. The operator takes out the waterproof wooden board 12. Since the elastic force of the second spring 34 is certain, the weight of the waterproof wooden board 12 before being soaked is certain. The time required for the waterproof wooden board 12 to absorb the same weight of water can be used to obtain the waterproof performance of the waterproof wooden board 12. When the waterproof performance of the waterproof wooden board 12 is tested by the device, the test process is simple and the test data is highly accurate.

[0044] The electromagnet 26 is controlled by an electrical signal to release its magnetism, so that the iron block 27 is no longer attracted by the electromagnet 26, and the rack 23 is driven to slide downward through the water box 28, the rack 23 drives the gear 20 to rotate, the gear 20 drives the pulley 18 to rotate, the pulley 18 drives the sliding sleeve 15 to slide downward along the outer surface of the limit slide bar 14 through the belt 19, the sliding sleeve 15 drives the rubber scraper 17 to move downward through the cross bar 16 to scrape the residual water on the surface of the waterproof wooden board 12, and the device is used to prevent the weight of the residual water on the surface of the waterproof wooden board 12 from affecting the water absorbed by the waterproof wooden board 12. If the weight of the waterproof wooden board 12 is not enough after the water is scraped off, the pressure column 32 will leave the pressure sensor 33, and at this time, water will be sprayed out from the nozzle 7 again. Since the waterproof wooden board 12 is vertical or inclined, the residual water on its surface is less;

[0045] When the water box 28 moves down to the point where the pull rope 29 is fully straightened, the water box 28 will continue to move down due to inertia. At this time, the water box 28 is driven to rotate under the force of the pull rope 29, so that the water collected inside the water box 28 is discharged at an angle, which is convenient for the reset movement of the water box 28. The rotation fulcrum of the water box 28 is offset from the center of gravity so that it can be reset again by its own gravity.

[0046] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A device for detecting the waterproof performance of construction materials, comprising a base (1), characterized in that: A column (2) is fixedly installed on the upper surface of the base (1), a rotating shaft is rotatably installed between the inner walls of the top of the column (2), a rotating block (3) is fixedly installed on the outer surface of the rotating shaft, and a placement plate (4) is fixedly installed on the other end of the rotating block (3), and two limiting grooves (401) are symmetrically provided on the upper surface of the placement plate (4), and a waterproof wooden board (12) is slidably inserted between the inner walls of the two limiting grooves (401), and a dovetail slide groove (402) is provided on the upper surface of the middle position of the placement plate (4), and a dovetail slide rail (403) is slidably installed on the inner wall of the dovetail slide groove (402), and the outer surface of the dovetail slide rail (403) near the bottom is fixedly installed A limit plate (404) is installed, the bottom end of the waterproof wooden board (12) is against the upper surface of the limit plate (404), the top end of the dovetail slide rail (403) is fixedly installed with an L-shaped rod (31), the lower surface of the top end of the L-shaped rod (31) is fixedly installed with a pressure column (32), the outer surface of the pressure column (32) is sleeved with a second spring (34), the top end of the second spring (34) is fixedly connected to the lower surface of the L-shaped rod (31), the bottom end of the second spring (34) is fixedly connected to the top end of the placement plate (4), the top end of the placement plate (4) is fixedly installed with a pressure sensor (33), and the pressure sensor (33) is arranged directly below the pressure column (32).

2. A device for detecting waterproof performance of construction materials according to claim 1, characterized in that: The outer surfaces of the two opposite sides of the placement plate (4) are fixedly mounted with limit sleeves (21), the inner wall of the limit sleeve (21) is slidably mounted with a square slide bar, the bottom end of the square slide bar is fixedly mounted with a rack (23), a water box (28) is rotatably mounted between the bottom ends of the two racks (23), the water box (28) is arranged directly below the waterproof wooden board (12), and the outer surfaces of the two opposite sides of the placement plate (4) are fixedly mounted with stoppers (22).

3. A device for detecting waterproof performance of construction materials according to claim 2, characterized in that: A sliding column (24) is fixedly installed on the top of the square sliding rod, and the bottom end of the sliding column (24) passes through the outer surface of the limiting sliding sleeve (21) and is slidably installed thereon. The bottom end of the sliding column (24) abuts against the upper surface of the stopper (22). A first spring (25) is sleeved on the outer surface of the sliding column (24), and the top end of the first spring (25) is fixedly connected to the lower surface of the top of the square sliding rod, and the bottom end of the first spring (25) is fixedly connected to the upper surface of the limiting sliding sleeve (21). Two pull ropes (29) are symmetrically fixedly installed on the upper surface of the water box (28), and the top ends of the two pull ropes (29) are fixedly connected to the bottom end of the placement plate (4).

4. A device for detecting waterproof performance of construction materials according to claim 3, characterized in that: A group of support blocks (13) are fixedly mounted on the outer surfaces of the two opposite sides of the placement plate (4) in pairs, and a group of two support blocks (13) are arranged above the rack (23). A limit slide bar (14) is fixedly mounted between the two support blocks (13). A sliding sleeve (15) is slidably mounted on the outer surfaces of the two limit slide bars (14). A cross bar (16) is fixedly mounted between the two sliding sleeves (15). A rubber scraper (17) is fixedly mounted on the lower surface of the cross bar (16), and the bottom of the rubber scraper (17) abuts against the upper surface of the waterproof wooden board (12).

5. A device for detecting waterproof performance of construction materials according to claim 4, characterized in that: A group of pulleys (18) are rotatably mounted on the outer surfaces of the two opposite sides of the placement plate (4), and a group of two pulleys (18) are sleeved on the outer surfaces of the two pulleys (18). The bottom end of the sliding sleeve (15) is fixedly connected to the upper surface of the belt (19). A gear (20) is fixedly mounted on one end of the pulley (18) near the rack (23). The gear (20) is meshed with the rack (23). The gear (20) is arranged below the rack (23). An electromagnet (26) is fixedly mounted on the outer surface of the placement plate (4) near the top of the two square slide bars, and an iron block (27) is fixedly mounted on the top of the square slide bar.

6. A device for detecting waterproof performance of construction materials according to claim 3, characterized in that: The fulcrum for the rotational installation of the water box (28) and the rack (23) is arranged on the outer surface of the two ends of the water box (28) away from the pull rope (29), and the end surfaces of the opposite ends of the water box (28) are fixedly installed with limit blocks (30), and the limit blocks (30) are arranged on the side of the rack (23) away from the pull rope (29) and abut against the outer surface thereof, and the limit blocks (30) are arranged above the fulcrum for the rotational installation of the water box (28) and the rack (23).

7. A device for detecting waterproof performance of construction materials according to claim 1, characterized in that: An electric telescopic rod (11) is rotatably mounted on the outer surface of the column (2) on the side close to the placement plate (4); the telescopic end of the electric telescopic rod (11) is rotatably mounted on the lower surface of the placement plate (4) close to the bottom end; one end of the rotating shaft passes through the outer surface of the column (2) and is fixedly mounted with a pointer (10); and a dial (9) is provided on the outer surface of the column (2) on the side close to the pointer (10).

8. A device for detecting waterproof performance of construction materials according to claim 1, characterized in that: The end surfaces of the rotation centers at both ends of the rotating shaft are fixedly mounted with rotating arms (5); a water spray pipe (6) is fixedly mounted between the outer surfaces of the two rotating arms (5) close to the top ends; a plurality of nozzles (7) are fixedly mounted at equal intervals on the outer surfaces of the water spray pipes (6); the nozzles (7) are arranged above the waterproof wooden board (12); a water pipe joint (8) is fixedly mounted on the outer surface of the water spray pipe (6); the water pipe joint (8) is connected to the nozzle (7) through the water spray pipe (6).

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