Building material detection device for building construction

Abstract

The invention relates to the technical field of building coiled material detection, in particular to a building construction building material detection device which comprises a machine base, two guide rails are fixed to the top face of the machine base, the two ends of the machine base are both in rolling connection with moving bases, first winding wheels are rotationally arranged at the tops of the moving bases, and a coiled material body is in transmission connection between the two first winding wheels; spring telescopic rods are fixed between the movable base and the guide rails, and a tensioning piece is slidably connected between the two guide rails. According to the invention, the middle part of the coiled material is inserted between the tensioning piece and the wear resistance detection piece, and the driving piece drives the [-shaped plate on the wear resistance detection piece to repeatedly and transversely move on the inner side of the panel to rub the coiled material, so that the wear resistance of the coiled material can be conveniently detected, and the [-shaped plate can synchronously drive the panel on the tensioning piece to move along the guide rail in the moving process; therefore, the panel tensions the coiled material from the middle part of the coiled material, so that the tension and tear resistance detection and the wear resistance detection of the coiled material are combined together, and the overall efficiency of detecting different properties of the coiled material is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building coiled material detection, in particular to a building material detection device for building construction. Background Art

[0002] Waterproof membrane is a kind of sheet-shaped waterproof material widely used in construction projects. It is made of flexible material as the base material and processed by a specific process. As an important waterproof layer of the building, it effectively prevents the penetration of rainwater, groundwater and other water sources, and ensures the dry environment inside the building.

[0003] Before the construction of waterproof membrane, it is necessary to sample and test the membrane's waterproof, wear resistance, tensile tear resistance and other performance indicators. Waterproof testing generally involves pouring water on the membrane to observe whether water droplets appear on the back of the membrane. This testing method is inefficient and labor-intensive; wear resistance testing mainly involves scraping the outside of the membrane with a friction block to observe the fuzzing and damage on the surface of the membrane; tensile tear resistance involves pulling the membrane from both ends of the membrane to observe whether the membrane becomes loose and torn under reasonable tension. At present, most of the commonly used performance testing devices for membranes are not easy to combine different performance testing operations of the membrane. In addition, different performance testing devices are set up to test different properties of the membrane, which is not conducive to improving the efficiency of membrane performance testing. Summary of the invention

[0004] The object of the present invention is to provide a building material detection device for building construction to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A building material detection device for building construction, comprising:

[0007] A machine base, wherein two guide rails are fixed on the top surface of the machine base;

[0008] There are two movable seats, which are respectively connected to the two ends of the machine base in a rolling manner. A winding wheel 1 is rotated on the top of the movable seat, and a coil body is connected between the two winding wheels 1 in a transmission manner.

[0009] There are two spring telescopic rods, which are used to elastically connect the moving seat and the guide rail;

[0010] A tensioning member, slidably connected to the two guide rails, the tensioning member comprising two rectangular frames, with a panel fixed between the two rectangular frames;

[0011] Wear-resistant detection piece, slidably connected to two rectangular frames. The wear-resistant detection piece includes a U-shaped plate, and a waterproof detection box is slidably clamped inside the U-shaped plate. Two connecting pipes are fixedly connected to the bottom of the waterproof detection box in a communicating manner. One connecting pipe is communicated with a hose for pumping water outside, and the other connecting pipe is communicated with a drainage hose outside;

[0012] Water seepage feedback piece, arranged on the outside of the panel, used to detect whether the coiled material is permeable;

[0013] Driving piece, used to drive the U-shaped plate to tension the coiled material.

[0014] Furthermore, electromagnet blocks for electrically adsorbing and fixing the moving seat are fixedly installed at both ends of the machine base. One of the rectangular frames is slidably connected to two guide rails.

[0015] Furthermore, a motor two for driving the winding wheel one to rotate is fixedly installed inside the moving seat, and an L-shaped frame is fixedly installed on the top of the moving seat.

[0016] Furthermore, the output end of the spring telescopic rod is fixedly connected to the moving seat, and the other end of the spring telescopic rod is fixedly connected to the guide rail.

[0017] Furthermore, a rectangular groove is formed inside the panel. Positioning blocks are fixedly installed between the same sides of the two rectangular frames, and the panel is detachably and fixedly connected to the positioning blocks.

[0018] Furthermore, friction blocks are embedded and fixed on the outside of the U-shaped plate, an airbag is embedded and fixed at the open end of the waterproof detection box, and a sealing gasket is fixedly installed on the outside of the airbag.

[0019] Furthermore, the water seepage feedback piece includes:

[0020] Connecting seats, four in number. A winding wheel two is rotated between two adjacent connecting seats;

[0021] Water detection test paper strip, which changes color when exposed to rain. The two ends of the water detection test paper strip are respectively wound and fixed to the winding wheel two at the corresponding positions;

[0022] Motor, fixedly connected to the panel, used to drive the winding wheel two at the corresponding position to rotate and wind up the used water detection test paper strip.

[0023] Furthermore, the driving piece includes:

[0024] Motor one, embedded and fixed on the side of the machine base;

[0025] Driving shaft, fixedly connected to the output end of the motor one. Driving wheels are fixedly installed at both ends of the driving shaft, and an extrusion wheel is fixedly installed in the middle of the driving shaft.

[0026] Furthermore, the eccentric positions of the driving wheel and the extrusion wheel are fixedly connected to the driving shaft, and circular holes for rotatably sleeving the driving wheel are formed at both the top and the bottom of the C-shaped plate.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] 1. By winding and fixing the coil material between the two winding wheels I, the middle part of the coil material is inserted between the panel and the C-shaped plate. The motor I drives the driving shaft to rotate, and the driving shaft drives the two eccentrically arranged driving wheels to rotate, so that the driving wheels drive the C-shaped plate to move horizontally inside the rectangular frame. The C-shaped plate drives the two rectangular frames to drive the panel to move longitudinally along the guide rail. The C-shaped plate repeatedly moves horizontally inside the panel, prompting the friction blocks to repeatedly scrape the coil material. By observing whether the surface of the transmitted coil material appears fluffy or damaged, it is judged whether the wear resistance of the coil material meets the construction requirements;

[0029] The two rectangular frames drive the panel to move longitudinally along the guide rail, so that the tensioning member pulls the middle part of the coil material (refer to the specification Figure 2 ). The spring telescopic rod between the moving seat and the guide rail hinders the moving seat from moving towards the tensioning position. During the process of tensioning the coil material, the coil material needs to overcome the telescopic elastic force of the spring telescopic rod. According to needs, the spring telescopic rod with different telescopic strengths (different spring stiffness coefficients in the prior art) can be replaced, so that the coil material needs to overcome different magnitudes of tensioning forces during the process of tensioning the coil material, so as to realize the detection of wear resistance performance while the coil material can be tensioned and tested with different magnitudes of forces, which is beneficial to improving the overall efficiency of the detection of the wear resistance performance and the anti-tensile tearing performance of the coil material.

[0030] 2. By sleeving a one-way bearing I between the driving shaft and the driving wheel, and sleeving a one-way bearing II between the driving shaft and the extrusion wheel. When the driving shaft rotates forward, the extrusion wheel idles, and the two driving wheels rotate. When the driving shaft rotates reversely, the extrusion wheel rotates away from the center position to extrude the waterproof detection box. The waterproof detection box is hermetically extruded on the panel. The external water pipe continuously injects water into the waterproof detection box through the connecting pipe. The coil material in the internal area of the waterproof detection box stays still for a period of time under the action of high-pressure water. If the water permeates through the coil material and seeps onto the water detection test strip on the inner side of the panel, and the water detection test strip changes color (prior art), it indicates that the waterproof effect of the coil material does not meet the standard. On the contrary, if the water detection test strip does not change color, it indicates that the coil material meets the waterproof construction requirements;

[0031] The water输送到防水检测盒内部 can be replaced with hot water to facilitate the detection of the waterproof effect of the coil material at high temperatures. Also, the part of the coil material that has been rubbed by the friction blocks can be输送到防水检测盒内部 for waterproof detection, realizing the combination of the wear resistance detection and the waterproof detection of the coil material in one test, which is beneficial to improving the accuracy of the overall results of the wear resistance detection and the waterproof performance detection of the coil material. Description of the Drawings

[0032] Figure 1 is the schematic diagram of the overall structure of the present invention Figure 1 ;

[0033] Figure 2 is the schematic diagram of the overall structure of the present invention Figure 2 ;

[0034] Figure 3 is the schematic diagram of the structure of the coiled material in the tensioned state in the present invention;

[0035] Figure 4 is the schematic diagram of the structure of the moving seat, winding wheel one, and coiled material body in the present invention;

[0036] Figure 5 is the schematic diagram of the overall structure of the driving member, tensioning member, wear-resistant detection member, and waterproof detection box in the present invention;

[0037] Figure 6 is the schematic diagram of the structure of the tensioning member in the present invention;

[0038] Figure 7 is the schematic diagram of the structure of the water seepage feedback member and the panel in the split three-dimensional state in the present invention;

[0039] Figure 8 is the schematic diagram of the structure of the wear-resistant detection member and the driving member in the present invention;

[0040] Fig. 9 is the schematic diagram of the structure of the C-shaped plate and the waterproof detection box in the split three-dimensional state in the present invention.

[0041] In the figure: 100, machine base; 110, guide rail; 120, electromagnet block; 200, moving seat; 210, winding wheel one; 211, coiled material body; 220, L-shaped frame; 300, spring telescopic rod; 400, tensioning member; 410, rectangular frame; 411, slide rail; 412, positioning block; 420, panel; 421, rectangular groove; 422, connecting piece; 500, wear-resistant detection member; 510, C-shaped plate; 511, friction block; 520, waterproof detection box; 521, connecting pipe; 522, airbag; 5221, sealing gasket; 523, clamping block; 600, water seepage feedback member; 610, connecting seat; 611, winding wheel two; 620, water detection test strip; 630, motor; 700, driving member; 710, motor one; 720, driving shaft; 721, driving wheel; 722, extrusion wheel. Detailed implementation mode

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] Example 1. Please refer to Figure 1-9 , in the embodiment of the present invention, a building material detection device for building construction includes a machine base 100. Two guide rails 110 are fixed on the top surface of the machine base 100. Moving seats 200 are rotatably connected to both ends of the machine base 100. A first winding wheel 210 is rotated on the top of the moving seat 200. A coiled material body 211 is drivingly connected between the two first winding wheels 210. A spring telescopic rod 300 is fixed between the moving seat 200 and the guide rail 110. A tensioning member 400 is slidably connected to the two guide rails 110. The tensioning member 400 includes two rectangular frames 410. A panel 420 is fixed between the two rectangular frames 410. A wear-resistant detection member 500 is slidably connected between the two rectangular frames 410. The wear-resistant detection member 500 includes a U-shaped plate 510. A waterproof detection box 520 is slidably clamped inside the U-shaped plate 510. Two connecting pipes 521 are connected and fixed to the bottom of the waterproof detection box 520. One connecting pipe 521 is connected to a hose for pumping water from the outside, and the other connecting pipe 521 is connected to a drainage hose from the outside. A water seepage feedback member 600 is driven on the outside of the panel 420. The water seepage feedback member 600 is used to detect whether the coiled material is permeable. A driving member 700 is embedded on one side of the machine base 100. The driving member 700 is used to drive the U-shaped plate 510 to tension the coiled material.

[0044] Specifically, by inserting the middle part of the coiled material between the tensioning member 400 and the wear-resistant detection member 500, the driving member 700 drives the U-shaped plate 510 on the wear-resistant detection member 500 to repeatedly move horizontally and rub the coiled material inside the panel 420, which is convenient for detecting the wear resistance of the coiled material. During the movement of the U-shaped plate 510, the panel 420 on the tensioning member 400 will be driven to move along the guide rail 110 synchronously, so that the panel 420 tensions the coiled material from the middle of the coiled material. The telescopic elastic force of the spring telescopic rod 300 hinders the movement of the coiled material, which is convenient for applying a tensioning force to the coiled material, realizing the combination of the anti-tensile tearing detection and wear-resistant detection of the coiled material. The external water pump transports water to the waterproof detection box 520 through the connecting pipe 521, so that the coiled material at the position between the panel 420 and the waterproof detection box 520 is static in the high-pressure water. By observing whether the water detection test strip 620 on the back of the coiled material changes color, it is judged whether the coiled material leaks water, which is beneficial to improving the overall efficiency of detecting different properties of the coiled material.

[0045] As Figure 2 and Figure 6As shown, in this embodiment, electromagnet blocks 120 for electrically adsorbing and fixing the movable base 200 are fixed at both ends of the base 100 , and a rectangular frame 410 is slidably connected to the two guide rails 110 .

[0046] In this embodiment, when it is necessary to transmit the coil between the two winding wheels 210, the electromagnet block 120 can be energized to adsorb and fix the iron movable seat 200, so that the positions of the two movable seats 200 are fixed, and the coil between the two winding wheels 210 can be tensioned and transported, which is convenient for switching different areas of the coil for performance testing. Two slide rails 411 are fixed to the bottom of the rectangular frame 410, and the slide rails 411 slide on the guide rail 110, so that the rectangular frame 410 can move stably along the guide rail 110 with the tensioning member 400 as a whole.

[0047] like Figure 4 As shown, in this embodiment, a motor 2 for driving a winding wheel 1 210 to rotate is fixed inside the movable seat 200 , and an L-shaped frame 220 is fixed on the top of the movable seat 200 .

[0048] In this embodiment, motor 2 is used to drive winding wheel 1 210 to rotate, so that the coiled material between the two winding wheels 210 can be transmitted. The top of the L-shaped frame 220 is rotatably connected to the top of the winding wheel 1 210, so that the winding wheel 1 210 can rotate stably. A through hole is opened in the middle of the L-shaped frame 220 for the coiled material to pass through, thereby allowing the coiled material to maintain a certain transmission direction during transmission.

[0049] like Figure 2 As shown, in this embodiment, the output end of the spring telescopic rod 300 is fixedly connected to the moving seat 200 , and the other end of the spring telescopic rod 300 is fixedly connected to the guide rail 110 .

[0050] The spring telescopic rod 300 is a prior art component, which plays the role of telescopic rebound and reset. The detailed working principle is not elaborated here. The fixed end of the spring telescopic rod 300 is sleeved and fixed with a mounting sleeve fixedly connected to the guide rail 110, so that the spring telescopic rod 300 is stably fixed in the position between the guide rail 110 and the movable seat 200. There are multiple rotating rollers on both sides of the movable seat 200, so that the movable seat 200 can move smoothly on the machine base 100.

[0051] like Figure 5 and Figure 7 As shown, in this embodiment, a rectangular groove 421 is opened on the inner side of the panel 420, and a positioning block 412 is fixed between the same sides of the two rectangular frames 410, and the panel 420 and the positioning block 412 are detachably fixedly connected.

[0052] In this embodiment, the rectangular groove 421 serves to accommodate the water detection test strip 620, preventing the test strip from moving when the coil is transported inside the panel 420. The panel 420 can be made of acrylic transparent board, which enables convenient observation through the panel 420 to check whether the water detection test strip 620 changes color due to rain. The coil is transported to be in a straight state between the panel 420 and the U-shaped plate 510 through the positioning block 412.

[0053] As Fig. 9 shown, in this embodiment, a friction block 511 is fixedly embedded on the outer side of the U-shaped plate 510, an airbag 522 is fixedly embedded at the open end of the waterproof detection box 520, and a sealing gasket 5221 is fixed on the outer side of the airbag 522.

[0054] In this embodiment, the friction block 511 can repeatedly scrape the coil during the lateral movement of the U-shaped plate 510 to test the wear resistance of the coil. After the inflated airbag 522 presses against the panel 420 at the open end of the waterproof detection box 520, the airbag 522 drives the sealing gasket 5221 to tightly press against the coil on the panel 420, realizing the sealing and water permeability detection of a local area of the coil.

[0055] As Fig. 9 shown, in this embodiment, a rectangular through hole for sliding and clamping connection with the waterproof detection box 520 is formed on the U-shaped plate 510, and clamping grooves are formed on both sides of the rectangular through hole. Clamping blocks 523 for sliding and clamping connection with the rectangular through hole are fixed on both sides of the waterproof detection box 520, so that the waterproof detection box 520 is movably arranged inside the U-shaped plate 510 and is only used when it presses against the coil during waterproof detection.

[0056] As Figure 8 shown, in this embodiment, two connecting pipes 521 are fixedly connected to the bottom of the waterproof detection box 520. One connecting pipe 521 is connected to the pipeline for pumping water from the outside to conduct water transportation, and the other connecting pipe 521 is connected to the outside drain pipe for pumping away the water after the detection. This connecting pipe 521 does not pump water during the waterproof detection process. Using an external water pump for suction or water level transportation is the prior art, and the specific working principle will not be elaborated.

[0057] As Figure 8 shown, in this embodiment, the driving member 700 includes a motor one 710 fixedly embedded on the side of the machine base 100. The output end of the motor one 710 is fixedly connected with a driving shaft 720. Driving wheels 721 are fixed at both ends of the driving shaft 720, and an extrusion wheel 722 is fixed in the middle of the driving shaft 720.

[0058] In this embodiment, when the output end of the first motor 710 rotates forward, the drive shaft 720 drives the two drive wheels 721 to rotate. Under the action of the second one-way bearing between the squeezing wheel 722 and the drive shaft 720, the squeezing wheel 722 does not rotate at this time. The drive wheel 721 rotates to drive the C-shaped plate 510 to move horizontally inside the rectangular frame 410, and the rectangular frame 410 moves longitudinally on the guide rail 110. On the contrary, when the output end of the first motor 710 drives the drive shaft 720 to rotate reversely, the squeezing wheel 722 rotates. Under the action of the first one-way bearing between the drive wheel 721 and the drive shaft 720, the drive wheel 721 does not rotate. The squeezing wheel 722 rotates to squeeze the waterproof detection box 520 to squeeze the coiled material for waterproof detection.

[0059] As Figure 8 shown, in this embodiment, the eccentric positions of the drive wheel 721 and the squeezing wheel 722 are fixedly connected to the drive shaft 720, and circular holes for rotationally sleeving the drive wheel 721 are provided at both the top and bottom of the C-shaped plate 510.

[0060] In this embodiment, the eccentric position of the drive wheel 721 is transmission-sleeved with the drive shaft 720, so that when the drive shaft 720 drives the drive wheel 721 to rotate, the C-shaped plate 510 can be switched to move in both the longitudinal and transverse directions, meeting the transverse movement friction test and the longitudinal movement tension test. The eccentric position of the squeezing wheel 722 is transmission-sleeved with the drive shaft 720, so that the eccentric position of the squeezing wheel 722 can squeeze the waterproof detection box 520 close to the coiled material for waterproof detection.

[0061] Embodiment 2, on the basis of Embodiment 1, in order to visually observe whether water seeps through the back of the coiled material.

[0062] As Figure 8 shown, in this embodiment, the water seepage feedback member 600 includes a plurality of connecting seats 610. A second winding wheel 611 is rotatably arranged between two adjacent connecting seats 610. A water detection test paper strip 620 is传动 connected between the two second winding wheels 611 and changes color when encountering water. The specific color-changing principle is the prior art and will not be elaborated here. The two ends of the water detection test paper strip 620 are respectively wound and fixed to the corresponding second winding wheels 611. A motor 630 is fixedly connected to the outside of the panel 420, and the motor 630 is used to drive the corresponding second winding wheel 611 to rotate and wind up the used water detection test paper strip 620.

[0063] In this embodiment, when water seeps through the coiled material to the back of the coiled material, the water will contact the water detection test paper strip 620, and the water detection test paper strip 620 changes color. The motor 630 drives the second winding wheel 611 to rotate to wind out the colored water detection test paper strip 620, which is convenient for users to observe and also facilitates driving the new spare water detection test paper strip 620 to the detection station for standby.

[0064] Embodiment 3, based on embodiment 1, is designed to enable the panel 420 to be disassembled and to install the coiled material between the panel 420 and the shaped plate 510.

[0065] like Figure 1 As shown, in this embodiment, a plurality of connecting pieces 422 are fixed to the outer side of the panel 420, and each connecting piece 422 is detachably screwed to the corresponding position positioning block 412 by means of screws, and the panel 420 can be removed by loosening the screws.

[0066] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0067] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A building material detection device for construction, characterized in that: Including: A machine base (100), on the top surface of the machine base (100), two guide rails (110) are fixed; Moving seats (200), the number of which is two, are respectively connected to the two ends of the machine base (100) in a rolling manner. A first winding wheel (210) is rotatably arranged on the top of the moving seat (200), and a coil material body (211) is drivingly connected between the two first winding wheels (210); Spring telescopic rods (300), the number of which is two, are used to elastically connect the moving seat (200) and the guide rail (110) together; A tensioning member (400) is slidably connected to the two guide rails (110). The tensioning member (400) includes two rectangular frames (410), and a panel (420) is fixed between the two rectangular frames (410); A wear-resistant detection member (500) is slidably connected to the two rectangular frames (410). The wear-resistant detection member (500) includes a C-shaped plate (510), a waterproof detection box (520) is slidably clamped inside the C-shaped plate (510), and two connecting pipes (521) are fixedly connected and communicated at the bottom of the waterproof detection box (520). One connecting pipe (521) is communicated with a hose for pumping water outside, and the other connecting pipe (521) is communicated with a drainage hose outside; A water seepage feedback member (600) is arranged on the outer side of the panel (420) and is used to detect whether the coil material is permeable; A driving member (700) is used to drive the C-shaped plate (510) to tension the coil material; 2. The building material detection device for construction according to claim 1, characterized in that: Electromagnet blocks (120) for electrically adsorbing and fixing the moving seat (200) are fixed at both ends of the machine base (100), and one rectangular frame (410) is slidably connected to the two guide rails (110); 3. The building material detection device for construction according to claim 1, characterized in that: A motor two for driving the first winding wheel (210) to rotate is fixed inside the moving seat (200), and an L-shaped frame (220) is fixed on the top of the moving seat (200); 4. The building material detection device for construction according to claim 1, characterized in that: The output end of the spring telescopic rod (300) is fixedly connected to the moving seat (200), and the other end of the spring telescopic rod (300) is fixedly connected to the guide rail (110); 5. The building material detection device for construction according to claim 1, characterized in that: A rectangular groove (421) is formed inside the panel (420), positioning blocks (412) are fixed between the same sides of the two rectangular frames (410), and the panel (420) is detachably and fixedly connected to the positioning blocks (412); 6. The building material detection device for construction according to claim 1, characterized in that: A friction block (511) is embedded and fixed on the outer side of the C-shaped plate (510), an air bag (522) is embedded and fixed at the open end of the waterproof detection box (520), and a sealing gasket (5221) is fixed on the outer side of the air bag (522); 7. The building material detection device for construction according to claim 1, characterized in that: The water seepage feedback member (600) includes: Four connecting seats (610), and a second winding wheel (611) is rotatably arranged between two adjacent connecting seats (610); A water detection test paper strip (620) changes color when exposed to rain. The two ends of the water detection test paper strip (620) are respectively wound and fixed to the corresponding second winding wheels (611); A motor (630) is fixedly connected to the panel (420) and is used to drive the corresponding second winding wheel (611) to rotate and wind up the used water detection test paper strip (620); 8. The building material detection device for construction according to claim 1, characterized in that: The driving member (700) includes: A motor one (710) is embedded and fixed on the side of the machine base (100); The drive shaft (720) is fixedly connected to the output end of the first motor (710). Driving wheels (721) are fixed to both ends of the drive shaft (720), and an extrusion wheel (722) is fixed to the middle of the drive shaft (720).

9. The building material detection device for construction according to claim 8, characterized in that: The eccentric positions of both the driving wheel (721) and the extrusion wheel (722) are fixedly connected to the drive shaft (720). Circular holes for rotatably sleeving the driving wheel (721) are formed at both the top and the bottom of the C-shaped plate (510).

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