Reinforcing steel bar bending resistance detection device for civil engineering

Abstract

The invention provides a reinforcing steel bar bending resistance detection device for civil engineering. The reinforcing steel bar bending resistance detection device structurally comprises a positioner, a mainframe box, a control panel, a supporting column, a parallel plate, a detection structure and a detection cavity, on the basis of newly-added components in the detection cavity, three steel bars can be inserted in parallel at the same time through the restraining plates on the left side and the right side of the bearing body and the three inserting grooves, the middle sections of the steel bars can be suspended in the cavity area, and therefore when the detection structure is pressed downwards for detection, the two ends of the steel bars are limited in the restraining plates and cannot tilt up; therefore, the parallel fixity of the steel bar is improved, the middle section area does not deviate during downward pressing detection, the detection accuracy and the safety coefficient of the steel bar can be improved, meanwhile, the limiting ring at the edge of the inserting groove can be combined with the reinforcing column to improve the overall hardness, and the deformation condition caused by the continuous influence of the pressure at the two ends of the steel bar is avoided; therefore, the steel bar can be continuously maintained in a circular shape, and the steel bar is prevented from being stuck inside after deformation.

Description

Technical Field

[0001] The invention relates to the technical field of engineering steel bar bending resistance detection, and more specifically to a steel bar bending resistance detection device for civil engineering. Background Art

[0002] Civil engineering mainly studies the survey, design, construction, maintenance, and repair of various land engineering facilities. Therefore, when civil engineering is carried out in a specific area, a large number of steel bars are needed for support and splicing. Before the steel bars are put into use in the project, they need to be tested for their bending resistance by a bending resistance testing device. Only steel bars that meet the requirements after the bending resistance test can be put into construction, avoiding the reduction of the firmness of the building and the increase of the risk factor of the building due to the insufficient bending strength of the steel bars. In summary, the inventors have found that the existing bending resistance detection device mainly has the following defects: since the current bending resistance detection device detects the bending resistance of steel bars by extrusion, after the steel bars enter the device, they are subjected to the vertical middle-section extrusion detection process of the device detection head, and the two ends of the steel bars are very likely to warp up and the middle section is unstable, which can easily cause a large deviation in the extrusion part, thereby reducing the detection stability of the detection device. At the same time, due to the influence of the warping and instability at both ends, nearby workers are very likely to be scratched by the steel bars, which can easily cause safety accidents during the detection process. Summary of the invention

[0003] The technical solution adopted by the present invention to achieve the technical purpose is: a steel bar bending resistance detection device for civil engineering, whose structure includes: a positioner, a main box, a control panel, a support column, a parallel plate, a detection structure, and a detection cavity. The upper end of the positioner is fixedly connected to the lower end of the main box, the side surface of the main box is electrically connected to the control panel, the support column is vertically installed on the upper edge of the main box, the parallel plate is arranged in the upper area of ​​the main box through the support column, the detection structure is vertically installed in the central area of ​​the parallel plate and is electrically connected to the control panel of the main box, and the detection cavity is arranged at the upper center of the main box and is vertically connected to the detection structure above.

[0004] As a further improvement of the present invention, the detection cavity is newly provided with a slot, a check plate, a cavity, a load-bearing body, and a protrusion. The slot passes through the surface center of the check plate, the check plate is arranged on the left and right sides of the cavity and is vertically embedded in the left and right sides of the load-bearing body through the cavity, the outer center of the load-bearing body is welded and connected with the protrusion, the load-bearing body is embedded in the detection cavity through the protrusion and is fixedly connected to the upper center of the main chassis, and the check plate is arranged on both sides of the lower part of the detection structure through the cavity; the slot is circular in shape and is provided at three locations on the check plate, the check plate is provided with one on each of the left and right sides of the load-bearing body, and the protrusion is a solid rectangular shape.

[0005] As a further improvement of the present invention, the restraining plate is provided with an insert block, an anti-rust plate, an adsorption block, a reinforcement column and a limit ring, the insert block is welded to the left and right sides of the anti-rust plate, the adsorption block covers the lower end of the anti-rust plate, the reinforcement column is embedded in the inner layer of the anti-rust plate, the limit ring is embedded in the center of the anti-rust plate through the reinforcement column and the edge is fixedly connected to one end of the reinforcement column, the center area of ​​the limit ring is penetrated by the slot and communicates with the cavity; the surface of the insert block is finely polished, the lower end of the anti-rust plate is completely covered by the adsorption block, the reinforcement column is provided with three groups inside the anti-rust plate and the connection part with the limit ring is arc-shaped.

[0006] As a further improvement of the present invention, the limiting ring is provided with a slot, a ring body, a contact wall, a rotation groove, and an auxiliary wheel. The slot is arranged at the outer center of the ring body, the contact wall is arranged in the inner area of ​​the ring body, the rotation groove is opened in the surface area of ​​the contact wall, the auxiliary wheel is embedded in the contact wall through the rotation groove, and the ring body is fixedly connected with one end of the reinforcement column through the slot; the slot is an arc-shaped recessed shape, the ring body is made of carbon steel, the contact wall is a finely polished shape, and the auxiliary wheel is a solid spherical shape.

[0007] As a further improvement of the present invention, the detection structure is provided with an information receiving module, an electrical connection box, a parallel plate, an auxiliary sleeve, an extension rod, and a detection head. The information receiving module is embedded in the surface of the electrical connection box, the lower end of the electrical connection box overlaps with the parallel plate, the auxiliary sleeve is embedded in the lower end of the parallel plate and is interconnected with the information receiving module of the electrical connection box, the extension rod and the auxiliary sleeve are at the same center point, the detection head is embedded in the lower end center of the extension rod, the bottom of the detection head is connected to the detection cavity, and the information receiving module is electrically connected to the control panel of the main box through the electrical connection box; the information receiving module is provided in three groups on the electrical connection box, the diameter of the auxiliary sleeve is larger than the diameter of the extension rod and is provided in three groups with the detection head.

[0008] As a further improvement of the present invention, an electrical connection module, a parallel plate, a detection spring and a connecting block are newly provided between the information receiving module and the extension rod, the electrical connection block is embedded in the central part of the parallel plate, the detection spring is installed at the lower end center of the parallel plate and is electrically connected to the electrical connection block, the connecting block is fixed to the lower end of the detection spring and is fixedly connected to the top of the extension rod, the detection spring is electrically connected to the information receiving module through the electrical connection module; the electrical connection module and the parallel plate are perpendicular to each other, the detection spring of the parallel plate is set in a vertical position, and the connecting block is solid.

[0009] As a further improvement of the present invention, the positioner is provided with a rubber block, an insulating plate, an overlap plate, and a clamping block. The rubber block is embedded in the surface portion of the insulating plate. The insulating plate and the overlap plate are parallel to each other. The clamping block is embedded in the lower edge area of ​​the overlap plate. The overlap plate is fixedly connected to the lower end of the main chassis through the insulating plate and the rubber block. A total of three rubber blocks are provided on the insulating plate. The overlap plate and the insulating plate are parallel to each other. The clamping block is vertically arranged in the lower portion of the overlap plate.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is based on newly added components inside the detection cavity. Through the restraining plates on the left and right sides of the load-bearing body and three slots, three steel bars can be inserted in parallel at the same time, so that the middle section of the steel bar can be suspended in the cavity area. Therefore, when the detection structure is pressed down for detection, the two ends of the steel bar are restricted by the restraining plates and will not be lifted up, thereby improving the parallel fixation of the steel bar, so that the middle section area will not be offset during the downward pressure detection, thereby improving the detection accuracy and safety factor of the steel bar. At the same time, the limiting ring on the edge of the slot can be combined with the strengthening column to improve the overall hardness, avoiding deformation caused by continuous pressure from the two ends of the steel bar, thereby ensuring that the circular shape is continuously maintained to avoid the steel bar being stuck inside after deformation.

[0011] 2. After the detection structure of the present invention is further improved, the three groups of information receiving modules and three groups of auxiliary sleeves, extension rods, detection heads and three slots on the restraining plate on the electrical connection box can be matched to effectively increase the number of steel bars during detection, thereby improving the detection efficiency of a large number of steel bars. Then, the detection spring and the electrical connection module connected between the information receiving module and the extension rod can drive the detection spring to descend simultaneously when the detection head descends through the extension rod, so that after the squeezing operation of the middle section of the steel bar is stopped, the steel bar can effectively derive the current bending strength of the steel bar according to its own bending characteristics combined with the rebound of the detection spring. Then, the electrical connection module can transmit the corresponding data to the information receiving module according to the reset amplitude of the detection spring, so as to improve the accuracy of receiving the bending data of each steel bar, thereby further improving the detection accuracy of the steel bar bending.

[0012] 3. After further improvement on the positioner, the present invention can improve the connection strength with the lower end of the main box through the insulating plate and rubber block on the overlap plate, so as to avoid leakage caused by the bottom metal when the main box is powered on after being connected with each other. Then the clamping block at the lower end of the overlap plate can be spliced ​​with the components between the engineering sites, avoiding the device being unable to be stably and vertically positioned in the site due to the uneven surface of the engineering site and the influence of the device detection jitter, thereby indirectly improving the detection stability of the bending resistance of the steel bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a structural schematic diagram of a steel bar bending resistance detection device for civil engineering.

[0014] Figure 2 The present invention is a three-dimensional structural schematic diagram of a newly added component of a detection chamber.

[0015] Figure 3 The present invention is a schematic diagram of the structure of a cross-section of an improved containment plate.

[0016] Figure 4 The present invention is a schematic diagram of the three-dimensional structure of an improved limiting ring.

[0017] Figure 5 The present invention is a schematic diagram of a three-dimensional structure after an improved detection structure.

[0018] Figure 6 The present invention is a front view structural diagram of a newly added component between an information receiving module and an extension rod.

[0019] Figure 7 The present invention is a schematic diagram of the three-dimensional structure of an improved positioner.

[0020] In the figure: positioner-1, main box-2, control panel-3, support column-4, parallel plate-5, detection structure-6, detection cavity-7, slot-71, restraining plate-72, cavity-73, load-bearing body-74, protrusion-75, plug-in block-721, anti-rust plate-722, adsorption block-723, reinforcement column-724, limit ring-725, card slot-a1, ring body-a2, contact wall-a3, rotating groove-a4, auxiliary wheel-a5, information receiving module-61, electrical connection box-62, parallel plate-63, auxiliary sleeve-64, extension rod-65, detection head-66, electrical connection module-611, parallel plate-612, detection spring-613, connection block-614, rubber block-11, insulating plate-12, overlap plate-13, clamping block-14. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings: Example

[0022] Figures 1 to 4 As shown: The present invention provides a steel bar bending resistance detection device for civil engineering. Its structure includes a locator 1, a main box 2, a control panel 3, a support column 4, a parallel plate 5, a detection structure 6, and a detection cavity 7. The upper end of the locator 1 is fixedly connected to the lower end of the main box 2, the side surface of the main box 2 is electrically connected to the control panel 3, the support column 4 is vertically installed on the upper edge of the main box 2, the parallel plate 5 is arranged in the upper area of ​​the main box 2 through the support column 4, the detection structure 6 is vertically installed in the central area of ​​the parallel plate 5 and is electrically connected to the control panel 3 of the main box 2, and the detection cavity 7 is arranged at the upper center of the main box 2 and is vertically connected to the detection structure 6 above.

[0023] The detection cavity 7 is newly provided with a slot 71, a check plate 72, a cavity 73, a load-bearing body 74, and a protrusion 75. The slot 71 runs through the center of the surface of the check plate 72. The check plate 72 is arranged on the left and right sides of the cavity 73 and is vertically embedded in the left and right sides of the load-bearing body 74 through the cavity 73. The outer center of the load-bearing body 74 is welded with the protrusion 75. The load-bearing body 74 is embedded in the detection cavity 7 through the protrusion 75 and is fixedly connected to the upper center of the main chassis 2. The check plate 72 is arranged on both sides of the lower part of the detection structure 6 through the cavity 73. The slot 71 is circular and is provided at three locations on the check plate 72. The check plate 72 is provided with one piece on each of the left and right sides of the load-bearing body 74. The protrusion 75 is a solid rectangular parallelepiped. The circular shape of the slot 71 can effectively match the shape of the steel bar, so that the steel bar can be inserted in a straight line through the slot 71. The restraining plate 72 can restrain the two ends of the steel bar by being located on the left and right sides of the load-bearing body 74. The protrusion 75 can improve the overlapping firmness of the load-bearing body 74 and the components by being a solid rectangular shape.

[0024] The retaining plate 72 is provided with an insert block 721, an anti-rust plate 722, an adsorption block 723, a reinforcement column 724, and a limiting ring 725. The insert block 721 is welded to the left and right sides of the anti-rust plate 722. The adsorption block 723 covers the lower end of the anti-rust plate 722. The reinforcement column 724 is embedded in the inner layer of the anti-rust plate 722. The limiting ring 725 is embedded in the center of the anti-rust plate 722 through the reinforcement column 724, and the edge is fixedly connected to one end of the reinforcement column 724. The center area of ​​the limiting ring 725 is penetrated by the slot 71 and communicates with the cavity 73. The surface of the insert block 721 is finely polished. The lower end of the anti-rust plate 722 is completely covered by the adsorption block 723. The reinforcement column 724 is provided with three groups inside the anti-rust plate 722, and the connection part with the limiting ring 725 is arc-shaped. The insert block 721 can improve the vertical insertion and connection effect of the anti-rust plate 722 through the fine polishing of the surface, the anti-rust plate 722 can improve the overlapping firmness with the surface of the component through the lower end adsorption block 723, and the reinforcement column 724 can position three groups of limit rings 725 through three groups, and then can match the shape of the limit ring 725 through the arc shape of one end.

[0025] The limiting ring 725 is provided with a slot a1, a ring body a2, a contact wall a3, a rotation slot a4, and an auxiliary wheel a5. The slot a1 is arranged at the outer center of the ring body a2, the contact wall a3 is arranged at the inner region of the ring body a2, the rotation slot a4 is opened at the surface region of the contact wall a3, the auxiliary wheel a5 is embedded in the contact wall a3 through the rotation slot a4, and the ring body a2 is fixedly connected with one end of the reinforcing column 724 through the slot a1; the slot a1 is an arc-shaped concave shape, the ring body a2 is made of carbon steel, the contact wall a3 is finely polished, and the auxiliary wheel a5 is a solid spherical shape; The slot a1 can effectively improve the connection stability with the components through the arc-shaped concave shape, the ring body a2 can avoid deformation caused by continuous pressure from steel bars through being made of carbon steel, the contact wall a3 can improve the smoothness of insertion with the steel bars through the fine polishing shape, and the auxiliary wheel a5 can achieve an auxiliary effect when the steel bars are inserted through the solid spherical shape, avoiding surface wear caused by continuous friction, and thus the detection efficiency of a large number of steel bars can be improved through three groups.

[0026] Specific functions and operation procedures of this embodiment: In the present invention, First: the main box 2 of the steel bar bending test device for civil engineering can be installed in the engineering site through the positioner 1, and then the control panel 3 on the main box 2 can control the detection structure 6 on the support column 4 and the parallel plate 5. After the steel bar is inserted into the detection cavity 7 in parallel, the detection structure 6 can be vertically descended according to the program instructions to perform bending test on the steel bar in the detection cavity 7, and then the data obtained by the detection structure 6 will be reflected in the control panel 3 area of ​​the main box 2; Second: the newly added load-bearing body 74 of the detection cavity 7 can be stably fixed to the upper center of the main box 2 through the protrusion 75, and then the vertical restraining plates 72 on the left and right sides of the cavity 73 can allow three steel bars to be inserted in a straight line through three slots 71, so that the middle section of the steel bar can be suspended in the cavity 73, and then the two ends are restrained by the restraining plates 72, avoiding the warping of the two ends and the deviation of the middle section during the downward bending test, so that it can improve the detection accuracy and stability of the steel bar bending resistance and avoid the safety hazards caused by the warping and deviation; Third: the anti-rust plate 722 of the restraining plate 72 can be vertically installed on the left and right sides of the load-bearing body 74 through the left and right side plug blocks 721, and then the bottom adsorption block 723 can be adsorbed on the surface of the cavity 73, so that the verticality of the anti-rust plate 722 can be improved and the restraining strength of the two ends of the steel bar can be improved, and then the three groups of reinforcement columns 724 on the surface of the anti-rust plate 722 can determine the positions of the three groups of limiting rings 725, so that the limiting rings 725 can allow the steel bar to be inserted in a straight line through the circular shape, and then according to the strength of the limiting rings 725 and the cooperation of the reinforcement columns 724, the deformation damage caused by the continuous pressure of the steel bar can be avoided, and the steel bar can be prevented from being stuck in the limiting rings 725 due to deformation and damage; Fourth: the ring body a2 of the limiting ring 725 can be fixedly connected with the reinforcement column 724 through the external slot a1, and then the contact wall a3 inside the ring body a2 and the auxiliary wheel a5 of the rotating slot a4 can contact the surface of the steel bar, so that the auxiliary wheel a5 can be driven to rotate when the steel bar is inserted, thereby improving the smoothness and convenience of the steel bar insertion and avoiding damage to the contact wall a3 caused by frequent friction and insertion. Example

[0027] Figure 5 to Figure 6 As shown: The present invention provides a steel bar bending resistance detection device for civil engineering. Its structure includes: the detection structure 6 is provided with an information receiving module 61, an electrical connection box 62, a parallel plate 63, an auxiliary sleeve 64, an extension rod 65, and a detection head 66; the information receiving module 61 is embedded in the surface of the electrical connection box 62 to ensure information; the lower end of the electrical connection box 62 overlaps with the parallel plate 63; the auxiliary sleeve 64 is embedded in the lower end of the parallel plate 63 and is interconnected with the information receiving module 61 of the electrical connection box 62; the extension rod 65 and the auxiliary sleeve 64 are at the same center point; the detection head 66 is embedded in the lower end center of the extension rod 65; the lower part of the detection head 66 is communicated with the detection cavity 7; the information receiving module 61 is electrically connected to the control panel 3 of the main box 2 through the electrical connection box 62; the information receiving module 61 is provided with three groups on the electrical connection box 62; the diameter of the auxiliary sleeve 64 is larger than the diameter of the extension rod 65 and is provided with three groups with the detection head 66; The information receiving module 61 can match the number of the three groups of auxiliary sleeves 64, extension rods 65, and detection heads 66 through three groups of numbers, so that the bending resistance data effect of each steel bar can be accurately obtained through one-to-one matching.

[0028] Among them, an electrical connection module 611, a parallel plate 612, a detection spring 613, and a connection block 614 are newly provided between the information receiving module 61 and the extension rod 65. The electrical connection block 611 is embedded in the center of the parallel plate 612. The detection spring 613 is installed at the center of the lower end of the parallel plate 612 and is electrically connected to the electrical connection block 611. The connection block 614 is fixed to the lower end of the detection spring 613 and is fixedly connected to the top of the extension rod 65. The detection spring 613 is electrically connected to the information receiving module 61 through the electrical connection module 611. The electrical connection module 611 and the parallel plate 612 are perpendicular to each other. The detection spring 613 of the parallel plate 612 is set in a vertical position. The connection block 614 is solid. The mutual parallelism of the electrical connection film 611 and the parallel plate 612 can ensure the vertical arrangement effect of the detection spring 613. The detection spring 612 can improve the vertical connection stability with the component through the vertical orientation setting. The connecting block 614 can improve the connection stability between the bottom of the detection spring 613 and the component through the solid shape.

[0029] Specific functions and operation procedures of this embodiment: In the present invention, First: the electrical connection box 62 of the detection structure 6 can be vertically installed at the center of the upper end of the parallel plate 5, and then the three groups of information receiving modules 61, the auxiliary sleeve 64, the extension rod 65, and the detection head 66 can be matched with the number of three slots 71 of the containment plate 72, so that the three steel bars can be tested for bending resistance at one time, so that the detection efficiency of a large number of steel bars can be improved, replacing the original single-bar detection process effect. During the detection, the extension rod 65 can be vertically dropped from the auxiliary sleeve 64 area, and then the middle section of the steel bar is squeezed by the detection head 66. After the middle section of the steel bar is squeezed, after the extension rod 65 is powered off and released, the steel bar can be reset according to its own rebound performance, so that the current bending resistance of the steel bar can be reflected according to the reset degree. Finally, the reset degree data can be reflected to the control panel 3 area through the information receiving module 61, so as to achieve the effect of facilitating data extraction; Second: an electrical connection module 611 and a parallel plate 612 are newly provided between the information receiving module 61 and the extension rod 65, so that the detection spring 613 in the parallel plate 612 can complete the electrical connection with the information receiving module 61 through the electrical connection module 611, and then the connection block 614 at the lower end can be used to complete the fixed connection with the top of the extension rod 65, so that when the extension rod 65 descends, it can drag the detection spring 613 to stretch and descend, and then when the steel bar is subjected to force and rebounds, the detection spring 613 can rebound and reset accordingly, and then according to the degree of rebound of the steel bar, the detection spring 613 can accurately record it, and finally the rebounded data is transmitted through the electrical connection module 61. Therefore, the cooperation of the detection spring 613 can improve the vertical descent stability of the extension rod 65 and the recording accuracy of the anti-bending data. Example

[0030] Figure 7 As shown: The present invention provides a steel bar bending resistance detection device for civil engineering. Its structure includes: the positioner 1 is provided with a rubber block 11, an insulating plate 12, a overlap plate 13, and a clamping block 14; the rubber block 11 is embedded in the surface of the insulating plate 12; the insulating plate 12 and the overlap plate 13 are parallel to each other; the clamping block 14 is embedded in the lower edge area of ​​the overlap plate 13; the overlap plate 13 is fixedly connected to the lower end of the main box 2 through the insulating plate 12 and the rubber block 11; three rubber blocks 11 are provided on the insulating plate 12; the overlap plate 13 and the insulating plate 12 are parallel to each other; the clamping block 14 is vertically arranged at the lower layer of the overlap plate 13; The three rubber blocks 11 can improve the connection stability between the insulating plate 12 and the bottom layer of the component, and then avoid leakage when the component is powered on through the insulating characteristics. The mutual parallelism of the overlap plate 13 and the insulating plate 12 can improve the vertical positioning effect of the component. The clamping block 14 can be connected with the component of the engineering site through the vertical orientation setting, thereby avoiding the shaking generated during the operation of the device and the instability of the device caused by the unevenness of the engineering site.

[0031] Specific functions and operation procedures of this embodiment: In the present invention, According to the clamping block 14 at the lower end of the overlap plate 13 of the locator 1, it can be vertically clamped and connected with the components in the engineering site, so as to improve the vertical positioning operation stability of the device, avoid the influence of the uneven surface of the site and the shaking of the device during operation, which makes the device unable to detect the steel bars vertically and stably, so as to effectively improve the vertical positioning effect of the origin of the device, and then the insulating plate 12 on the overlap plate 13 can be fixedly connected with the lower end of the main box 2 through three rubber blocks 11, so that the bottom power leakage generated when the main box 2 is powered on can be avoided through the cooperation of the insulating plate 12 and the rubber block 11, thereby ensuring the safety of electricity use of the overall components and preventing the leakage of electric energy caused by improving the vertical fixity of the origin of the device.

[0032] Utilizing the technical solution of the present invention, or those skilled in the art designing similar technical solutions inspired by the technical solution of the present invention to achieve the above-mentioned technical effects, all fall within the protection scope of the present invention.

Claims

1. A steel bar bending resistance detection device for civil engineering, the structure of which comprises: A locator (1), a main box (2), a control panel (3), a support column (4), a parallel plate (5), a detection structure (6), and a detection cavity (7), characterized in that: the upper end of the locator (1) is fixedly connected to the lower end of the main box (2), the side surface of the main box (2) is electrically connected to the control panel (3), the support column (4) is vertically installed on the upper edge of the main box (2), the parallel plate (5) is arranged in the upper area of ​​the main box (2) through the support column (4), the detection structure (6) is vertically installed in the central area of ​​the parallel plate (5) and is electrically connected to the control panel (3) of the main box (2), and the detection cavity (7) is arranged at the upper center of the main box (2) and is vertically connected to the detection structure (6) above.

2. A device for detecting bending resistance of steel bars for civil engineering according to claim 1, characterized in that: The detection cavity (7) is newly provided with a slot (71), a check plate (72), a cavity (73), a load-bearing body (74), and a protrusion (75); the slot (71) passes through the center of the surface layer of the check plate (72); the check plate (72) is arranged on the left and right sides of the cavity (73) and is vertically embedded in the left and right sides of the load-bearing body (74) through the cavity (73); the outer center of the load-bearing body (74) is welded to the protrusion (75); the load-bearing body (74) is embedded in the detection cavity (7) through the protrusion (75) and is fixedly connected to the center of the upper end of the main chassis (2); and the check plate (72) is arranged on both sides of the lower side of the detection structure (6) through the cavity (73).

3. A device for detecting bending resistance of steel bars for civil engineering according to claim 2, characterized in that: The restraining plate (72) is provided with an insert block (721), an anti-rust plate (722), an adsorption block (723), a reinforcement column (724), and a limiting ring (725); the insert block (721) is welded to the left and right sides of the anti-rust plate (722); the adsorption block (723) covers the lower end of the anti-rust plate (722); the reinforcement column (724) is embedded in the inner layer of the anti-rust plate (722); the limiting ring (725) is embedded in the center of the anti-rust plate (722) through the reinforcement column (724) and the edge is fixedly connected to one end of the reinforcement column (724); the center area of ​​the limiting ring (725) is penetrated by the slot (71) and communicates with the cavity (73).

4. A device for detecting bending resistance of steel bars for civil engineering according to claim 3, characterized in that: The limiting ring (725) is provided with a slot (a1), a ring body (a2), a contact wall (a3), a rotation slot (a4), and an auxiliary wheel (a5); the slot (a1) is arranged at the center of the outer layer of the ring body (a2); the contact wall (a3) ​​is arranged in the inner layer area of ​​the ring body (a2); the rotation slot (a4) is opened in the surface area of ​​the contact wall (a3); the auxiliary wheel (a5) is embedded in the contact wall (a3) ​​through the rotation slot (a4); and the ring body (a2) is fixedly connected to one end of the reinforcement column (724) through the slot (a1).

5. The device for detecting bending resistance of steel bars for civil engineering according to claim 1, characterized in that: The detection structure (6) is provided with an information receiving module (61), an electrical connection box (62), a parallel plate (63), an auxiliary sleeve (64), an extension rod (65), and a detection head (66); the information receiving module (61) is embedded in the surface of the electrical connection box (62); the lower end of the electrical connection box (62) and the parallel plate (63) overlap each other; the auxiliary sleeve (64) is embedded in the lower end of the parallel plate (63) and is interconnected with the information receiving module (61) of the electrical connection box (62); the extension rod (65) and the auxiliary sleeve (64) are located at the same center point; the detection head (66) is embedded in the lower end center of the extension rod (65); the lower part of the detection head (66) is connected to the detection cavity (7); and the information receiving module (61) is electrically connected to the control panel (3) of the main box (2) through the electrical connection box (62).

6. A device for detecting bending resistance of steel bars for civil engineering according to claim 5, characterized in that: An electrical connection module (611), a parallel plate (612), a detection spring (613), and a connection block (614) are newly provided between the information receiving module (61) and the extension rod (65); the electrical connection block (611) is embedded in the central portion of the parallel plate (612); the detection spring (613) is installed at the center of the lower end of the parallel plate (612) and is electrically connected to the electrical connection block (611); the connection block (614) is fixed to the lower end of the detection spring (613) and is fixedly connected to the top of the extension rod (65); the detection spring (613) is electrically connected to the information receiving module (61) via the electrical connection module (611).

7. The device for detecting bending resistance of steel bars for civil engineering according to claim 1, characterized in that: The positioner (1) is provided with a rubber block (11), an insulating plate (12), a overlap plate (13), and a clamping block (14); the rubber block (11) is embedded in the surface of the insulating plate (12); the insulating plate (12) and the overlap plate (13) are parallel to each other; the clamping block (14) is embedded in the lower edge area of ​​the overlap plate (13); the overlap plate (13) is fixedly connected to the lower end of the main chassis (2) through the insulating plate (12) and the rubber block (11).

Images