Concrete stress detection equipment

Abstract

The invention discloses concrete stress detection equipment. The concrete stress detection equipment comprises a detection base, a detection assembly and a driving assembly, when the detection assembly is subjected to external force, the detection assembly is kept close to the conveying piece, and concrete on the conveying piece is detected. The driving assembly is reversely pushed by the concrete on the conveying piece, the driving assembly is kept to be stressed to stretch and make contact with the detection assembly, the detection assembly is pushed to be close to the concrete, and the concrete is detected. According to the concrete stress detection equipment, manufactured concrete is conveyed into the detection equipment through the conveying piece, so that the conveying piece is driven reversely, the driving assembly can work, and the driving assembly drives the detection assembly to carry out stress detection on the concrete. Only one driving assembly needs to be adopted, the equipment manufacturing difficulty is lowered, funds are saved, meanwhile, automatic detection can be achieved, the labor intensity of workers is lowered, the concrete detection efficiency is improved, and the concrete delivery efficiency is improved.

Description

Technical Field

[0001] The invention relates to stress detection technology, in particular to a concrete stress detection device. Background Art

[0002] When a cement mixing plant is producing concrete, it is necessary to extract a certain amount of concrete for accumulation testing, and use molds to make a portion of concrete blocks that can be used as finished products. The solidified concrete blocks are then subjected to impact and stress testing. This method of making a portion of the finished product for testing is only suitable for construction projects with weaker compressive resistance. For some construction projects that require stronger compressive resistance, all concrete workpieces used need to be tested, which requires a lot of manpower and material resources.

[0003] If a single random inspection is used, there will be missed inspections, which may cause certain risks to the construction project in the later stage. If all inspections are carried out, it will take a lot of time and reduce the delivery efficiency, so a concrete stress detection device that can realize automatic and comprehensive testing is needed. Summary of the invention

[0004] In order to solve the defects of the above-mentioned prior art, the present invention proposes a concrete stress detection device.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A concrete stress detection device, comprising:

[0007] A detection base, wherein a conveying trough and movable areas symmetrically arranged on both sides of the conveying trough are arranged in the middle of the detection base, the movable areas are connected to the conveying trough, and a conveying member for conveying concrete is arranged in the conveying trough.

[0008] The detection component is arranged in the activity area. When the detection component is subjected to external force, the detection component is kept close to the conveying member to detect the concrete on the conveying member.

[0009] A driving assembly is arranged in the activity area, and the driving assembly is pushed in the reverse direction by the concrete on the conveying member, so that the driving assembly is stretched under force to contact the detection assembly, and the detection assembly is pushed close to the concrete to detect the concrete, wherein

[0010] The detection component is provided with a first pusher, a rotating member and a second pusher. The first pusher is pushed by the driving component to drive the rotating member to rotate, and the rotating member drives the second pusher to move closer to the concrete on the conveying member.

[0011] The driving assembly is provided with a rotating disk, a positioning member and a driving member. The rotating disk is mounted on the detection base, the positioning member is arranged on the rotating disk, and the driving member is arranged outside the positioning member and is limited by the stroke of the positioning member. The driving member is pushed in the opposite direction by the concrete on the conveying member, keeps in contact with the first pushing member, and drives it to move.

[0012] In the present invention, a plurality of first teeth are provided on the first pushing member, a sliding hole is provided in the middle of the first pushing member, positioning blocks are symmetrically arranged at both ends of the first pushing member in the active area, a sliding rod is provided between the positioning blocks, and the first pushing member is installed on the sliding rod through the sliding hole.

[0013] In the present invention, a rotating shaft is provided in the middle of the rotating member, and the rotating member is installed in the active area through the rotating shaft. A plurality of second teeth are provided on the rotating member, and the first teeth are meshed and connected with the second teeth. A first spring is provided on one end of the sliding rod close to the rotating member, and one end of the first spring contacts with a positioning block, and the other end contacts with the first pushing member. The height of the rotating member is greater than the height of the first pushing member plus the height of the second pushing member, and the second pushing member is located at the lower end of the first pushing member.

[0014] In the present invention, the second pushing member is composed of a mounting section and a sliding section, the mounting section and the sliding section are vertically arranged, the sliding section is provided with a third tooth that cooperates with the second tooth, the mounting section is provided with a first stress detector, and the detection base is provided with a through hole for the sliding section to slide.

[0015] In the present invention, a first mounting hole is provided in the middle of the positioning member, a positioning shaft is provided in the first mounting hole, the positioning shaft is installed on the rotating disk, the positioning member is composed of a first blocking part and a second blocking part, the positioning member is arranged in a "T" shape, and the width of the first blocking part is greater than the width of the second blocking part.

[0016] In the present invention, the middle of the driving member is hollowed out to form a through area, the positioning member is arranged in the through area, the width of the first blocking portion is matched with the width of the through area, a mounting portion is provided at one end of the driving member, a second spring is provided between the first blocking portion and the mounting portion, and a driving wheel is provided at the other end of the driving member, a plurality of fourth teeth are provided on the driving wheel, the fourth teeth are matched with the first pushing member, and the driving wheel is extended to the through area through an extension rod to contact the second blocking portion of the positioning member.

[0017] In the present invention, a T-block is provided on the mounting portion, a force-bearing member is provided on the mounting portion, a T-slot matching the T-block is provided on the force-bearing member, the force-bearing member is made of rubber material, and a second stress detector is provided in the middle of the force-bearing member.

[0018] In the present invention, a symmetrical blocking block is provided on the extension rod, and a first plane, a second plane and an inclined plane are provided on the blocking block. The first plane is connected to the second plane through the inclined plane, the length of the first plane is greater than the length of the second plane, the first plane is set toward the positioning member, and the second plane is set toward the driving wheel.

[0019] In the present invention, a symmetrical avoidance groove is provided on the driving member, a mounting rod is provided on the rotating disk, a limit member is provided on the mounting rod, the limit member consists of a rotating part, an inclined part and a contact part, the inclined part and the contact part are connected by an arc-shaped part, the inclined part is arranged parallel to the inclined surface, the contact part is in contact with the extension rod, a rotating hole is provided in the middle of the rotating part, the mounting rod is arranged in the rotating hole, and the rotating part is arranged in the avoidance groove.

[0020] In the present invention, symmetrical electromagnetic components are provided on both sides of the driving component, the electromagnetic components are installed on the rotating disk, and the electromagnetic components are arranged at positions corresponding to the contact parts. The electromagnetic components are energized to attract the limiting components to keep the contact parts rotating into the avoidance grooves.

[0021] The concrete stress detection device of the present invention has the following beneficial effects: the concrete stress detection device has a compact structure and an ingenious design. The prepared concrete is transported to the detection device through a conveying member, and the conveying member is driven in reverse, so that the driving component can work, and the driving component drives the detection component to perform stress detection on the concrete. Only one driving assembly is needed, which reduces the difficulty of equipment manufacturing and saves money. At the same time, automatic detection can be realized, which reduces the labor intensity of the staff, improves the detection efficiency of concrete, and improves the delivery efficiency of concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the concrete stress detection equipment of the present invention;

[0023] Figure 2 for Figure 1 Exploded diagram of

[0024] Figure 3 for Figure 2 Schematic diagram of the installation status of the drive component, detection component and detection base;

[0025] Figure 4 for Figure 2 Schematic diagram of the structure of the driving component and the detection component in FIG.

[0026] Figure 5 for Figure 4 Exploded view of the drive assembly in Figure 1;

[0027] Figure 6 for Figure 5 A top perspective view of the force-bearing member, driving member, rotating disk, electromagnetic member and positioning member in FIG.

[0028] Figure 7 for Figure 5 A cross-sectional view of a driving member in FIG.

[0029] Figure 8 for Figure 6 Schematic diagram of the limiter structure;

[0030] Fig. 9 for Figure 4 Schematic diagram of the detection component structure in ;

[0031] Fig.10 for Fig. 9 Rear view of

[0032] Fig.11 for Figure 2 Schematic diagram of the detection base structure.

[0033] In the figure: detection base 1, drive component 2, detection component 3, cover plate 4, transmission member 5, tension spring 6, force member 7, rotating disk 8, transmission groove 9, active area 10, lifting part 11, rotating groove 12, first limit block 13, second limit block 14, first stress detector 15, accommodating area 16, limit surface 17, drive member 18, holding surface 19, blocking block 20, limit member 21, contact part 22, first push member 23, rotating member 24, second push member 25, first tooth 26, sliding hole 27, positioning block 28, slide rod 29, rotating shaft 30, second tooth 31, first spring 32, installation Segment 33, sliding segment 34, third tooth 35, through hole 36, positioning piece 37, first mounting hole 38, positioning shaft 39, first blocking portion 40, second blocking portion 41, through area 42, mounting portion 43, second spring 44, driving wheel 45, fourth tooth 46, extension rod 47, T-block 48, bearing surface 49, T-slot 50, second stress detector 51, through area 52, first plane 53, second plane 54, inclined surface 55, avoidance groove 56, mounting rod 57, rotating portion 58, inclined portion 59, arc portion 60, rotating hole 61, electromagnetic member 62, second mounting hole 63, plate body 64. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] like Figures 1 to 11As shown, the concrete stress detection device of the present invention comprises a detection base 1, a driving assembly 2 and a detection assembly 3. A cover plate 4 is provided on the detection base 1 to limit the positions of the driving assembly 2 and the detection assembly 3. The driving assembly 2 is first pushed forward by the concrete on the transmission member 5 to compress the tension spring 6, and then the transmission member 5 drives the concrete to move in the reverse direction, so that the friction between the concrete and the force-bearing member 7 drives the rotating disk 8 to rotate in the reverse direction, so that the tension spring 6 is stretched.

[0036] The concrete in the present application can be tested in the form of strips or rods.

[0037] A conveying groove 9 and active areas 10 symmetrically arranged on both sides of the conveying groove 9 are provided in the middle of the detection base 1. The active area 10 is connected to the conveying groove 9. A conveying member 5 for conveying concrete is provided in the conveying groove 9. The conveying member 5 can adopt a roller-type conveying mechanism, and a baffle for blocking concrete is provided on the roller-type conveying mechanism. The baffle can prevent the concrete from sliding on the roller-type conveying mechanism, thereby preventing the concrete from being unable to push the driving assembly 2 in the reverse direction.

[0038] A raised portion 11 is provided in the active area 10, a rotating groove 12 is provided in the middle of the raised portion 11, and the rotating disk 8 is arranged in the rotating groove 12. At the same time, a first limit block 13 and a second limit block 14 are also provided in the active area 10, the first limit block 13 is provided at the edge of the raised portion 11, and the second limit block 14 is connected to the inner wall of the active area 10. An accommodating area 16 for the first stress detector 15 to slide is formed between the first limit block 13 and the second limit block 14.

[0039] The first limit block 13 is provided with a limit surface 17, which can limit the angle of the positive rotation of the driving member 18 when pushed by the concrete. The moving direction of the concrete driven by the conveying member 5 is the indicated direction of F1, and the direction of F2 is the reverse direction.

[0040] A retaining surface 19 is provided at the edge of the rotating groove 12, and a tension spring 6 is provided between the retaining surface 19 and the driving member 18. The tension spring 6 can limit the position of the driving member 18 so that it remains in a 45° inclined state when no force is applied.

[0041] The rotation angle of the driving member 18 can be rotated 15° toward one end of the tension spring 6, that is, when the force-bearing member 7 in the transmission groove 9 is pushed to the upper end of the lifting portion 11, it indicates that the maximum rotation angle is reached. The rotation angle of the driving member 18 toward the end away from the tension spring 6 can be maintained above 45° until the driving member 18 reaches a vertical 90° from the inclined 45°, or exceeds 90°. However, at this time, the blocking block 20 will be pushed by the driving member 18 to pass the limiting member 21, and then keep the first plane 53 of the blocking block 20 at the upper limit of the contact portion 22, and the concrete at this time can no longer push the driving member 18.

[0042] The detection component 3 is arranged in the active area 10 . When the detection component 3 is subjected to external force, the detection component 3 is kept close to the conveying member 5 to detect the concrete on the conveying member 5 .

[0043] The detection component 3 is provided with a first pusher 23 , a rotating member 24 and a second pusher 25 . The first pusher 23 is pushed by the driving component 2 to drive the rotating member 24 to rotate, and the rotating member 24 drives the second pusher 25 to move closer to the concrete on the conveying member 5 .

[0044] The first push member 23 is provided with a plurality of first teeth 26 , a sliding hole 27 is provided in the middle of the first push member 23 , positioning blocks 28 symmetrically arranged at both ends of the first push member 23 are provided in the movable area 10 , a sliding rod 29 is provided between the positioning blocks 28 , and the first push member 23 is installed on the sliding rod 29 through the sliding hole 27 .

[0045] A rotating shaft 30 is provided in the middle of the rotating member 24, and the rotating member 24 is installed in the active area 10 through the rotating shaft 30. A plurality of second teeth 31 are provided on the rotating member 24, and the first teeth 26 are meshed and connected with the second teeth 31. A first spring 32 is provided on the end of the slide bar 29 close to the rotating member 24, and one end of the first spring 32 contacts a positioning block 28, and the other end contacts the first pusher 23. The height of the rotating member 24 is greater than the height of the first pusher 23 plus the second pusher 25, and the second pusher 25 is located at the lower end of the first pusher 23. Since the first pusher 23 and the second pusher 25 are not at the same height, they will not interfere with each other.

[0046] The second pusher 25 is composed of a mounting section 33 and a sliding section 34, which are vertically arranged. The sliding section 34 is provided with a third tooth 35 that cooperates with the second tooth 31. The mounting section 33 is provided with a first stress detector 15, and the detection base 1 is provided with a through hole 36 for the sliding section 34 to slide.

[0047] Since the first pusher 23, the rotating member 24 and the second pusher 25 are all provided with teeth, they can mesh with each other for transmission. Therefore, when the first pusher 23 is pushed by the driving member 18, the rotating member 24 can be driven to rotate, and then the second pusher 25 can be driven to move by the rotating member 24, so that the first stress detector 15 is close to the concrete.

[0048] The driving component 2 is arranged in the active area 10. The driving component 2 is pushed in the opposite direction by the concrete on the conveying member 5, so that the driving component 2 is stretched under force to contact the detection component 3, and the detection component 3 is pushed close to the concrete to detect the concrete.

[0049] The driving member 18 is also provided with a plate 64 for covering the driving member 18 .

[0050] The driving assembly 2 is provided with a rotating disk 8, a positioning member 37 and a driving member 18. The rotating disk 8 is mounted on the detection base 1, the positioning member 37 is arranged on the rotating disk 8, and the driving member 18 is arranged outside the positioning member 37. The driving member 18 is pushed in the reverse direction by the concrete on the conveying member 5, keeps in contact with the first pushing member 23, and drives it to move.

[0051] A first mounting hole 38 is provided in the middle of the positioning member 37, a positioning shaft 39 is provided in the first mounting hole 38, the positioning shaft 39 is installed on the rotating disk 8, a second mounting hole 63 is provided on the positioning disk 8, and the positioning shaft 39 is arranged in the second mounting hole 63. The positioning member 37 is composed of a first blocking portion 40 and a second blocking portion 41. The positioning member 37 is arranged in a "T" shape, and the width of the first blocking portion 40 is greater than the width of the second blocking portion 41.

[0052] The middle of the driving member 18 is hollowed out to form a through area 42, the positioning member 37 is arranged in the through area 42, and the width of the first blocking portion 40 matches the width of the through area 42. A mounting portion 43 is arranged at one end of the driving member 18, a second spring 44 is arranged between the first blocking portion 40 and the mounting portion 43, and a driving wheel 45 is arranged at the other end of the driving member 18, and a plurality of fourth teeth 46 are arranged on the driving wheel 45, and the fourth teeth 46 match the first pushing member 23. The driving wheel 45 extends to the through area 42 through an extension rod 47 to contact the second blocking portion 41 of the positioning member 37.

[0053] The mounting portion 43 is provided with a T-block 48, and the mounting portion 43 is provided with a force-bearing member 7. The force-bearing member 7 is provided with a T-slot 50 that matches the T-block 48. The force-bearing member 7 is made of rubber material. A second stress detector 51 is provided in the middle of the force-bearing member 7. The second stress detector 51 can perform a detection when the driving member 18 reaches 90°, and the other angles are all detected by the first stress detector 15. The force-bearing member 7 can protect the second stress detector 51 and buffer it.

[0054] A passing area 52 through which concrete passes is formed between the force-bearing members 7. The driving member 18 is first pushed back to rotate counterclockwise, and then the part to be detected on the concrete is kept beyond the position of the first stress detector 15. Only then can the motor be started to drive the conveying member 5 to move in the reverse direction of F2, driving the driving member 18 to be pushed in the reverse direction by the concrete, compressing the second spring 44, so that the driving member 18 moves in the direction of the first pushing member 23, keeping the fourth tooth 46 meshing with the first tooth 26.

[0055] A symmetrical blocking block 20 is provided on the extension rod 47, and a first plane 53, a second plane 54 and an inclined plane 55 are provided on the blocking block 20. The first plane 53 is connected to the second plane 54 through the inclined plane 55. The length of the first plane 53 is greater than the length of the second plane 54. The first plane 53 is set toward the positioning member 37, and the second plane 54 is set toward the driving wheel 45.

[0056] The driving member 18 is provided with a symmetrical avoidance groove 56, the rotating disk 8 is provided with a mounting rod 57, the mounting rod 57 is provided with a stopper 21, and the stopper 21 is composed of a rotating portion 58, an inclined portion 59 and a contact portion 22. The inclined portion 59 and the contact portion 22 are connected by an arc portion 60, the inclined portion 59 is arranged parallel to the inclined surface 55, the contact portion 22 is in contact with the extension rod 47, a rotating hole 61 is arranged in the middle of the rotating portion 58, the mounting rod 57 is arranged in the rotating hole 61, and the rotating portion 58 is arranged in the avoidance groove 56.

[0057] Symmetrical electromagnetic components 62 are provided on both sides of the driving component 18, and the electromagnetic components 62 are installed on the rotating disk 8. The electromagnetic components 62 are set at positions corresponding to the contact portion 22. The electromagnetic components 62 are energized to attract the limiting component 21, and keep the contact portion 22 rotating into the avoidance groove 56. The electromagnetic components 62 are used to release the blocking block 20 from being restricted by the limiting component 21, so that it can be reset to facilitate the next stress detection operation.

[0058] The electromagnetic member 62 is mounted on the rotating disk 8 and can also limit the moving position of the driving member 18. The driving member 18 can move on the rotating disk 8, but when rotating, the positioning member 37 and the rotating disk 8 will be driven to rotate together.

[0059] During the inspection, the concrete is first placed on the conveying member 5, and then the motor is started, and the conveying member 5 is driven by the motor. The conveying member 5 can transmit multiple concretes that need to be inspected at one time. Of course, for some important construction projects, each of the concrete materials needs to be inspected, and they can be inspected one by one through this application. When the conveying member 5 drives the concrete into the conveying groove 9 in the inspection base 1, the symmetrically arranged driving member 18 will be pushed by the concrete first, so that it pushes the lower end of the driving member 18 to rotate upward, and the driving member 18 at this time will not block the advancement of the concrete.

[0060] Then, after the part of the concrete to be tested has passed the first stress detector 15, the motor needs to be rotated in the opposite direction to ensure that the conveying member 5 drives the concrete to move in the direction of F2. The surface of the concrete contacts the force-bearing member 7 made of rubber, generating a large friction force, so that the driving member 18 blocks the concrete, thereby causing the concrete to push the driving member 18. Since the position of the positioning member 37 is fixed, the second spring 44 is compressed, so that the driving member 18 stretches the tension spring 6 and keeps the driving wheel 45 moving in the direction of the first pushing member 23 until the fourth tooth 46 is meshed with the first tooth 26. Then, the first pushing member 23 drives the rotating member 24 to rotate, and then the rotating member 24 drives the second pushing member 25 to move, so that the first stress detector 15 on the second pushing member 25 performs stress detection on the concrete on the conveying member 5.

[0061] When a stronger stress detection is needed, it is only necessary to keep the transmission member 5 driving the concrete to move in the direction of F2, so that the concrete pushes the driving member 18 to rotate and reaches 90°. When the driving member 18 reaches 90°, the second stress detector 51 will detect the concrete. Of course, when the driving member 18 reaches 90°, the blocking block 20 has just passed the contact portion 22, so that the first plane 53 is placed on the bearing surface 49 on the contact portion 22, blocking the driving member 18 from being pushed in the direction of the concrete by the second spring 44, so that if the concrete continues to move in the direction of F2, it will not affect the movement of the concrete to drive the driving member 18 to rotate.

[0062] When the second stress detector 51 completes the detection, the motor can be started to rotate in the forward direction, driving the concrete that has been detected to continue to move forward, so that the next concrete to be detected moves forward to the passing area 52. At this time, the electromagnetic component 62 will be energized to attract the contact part 22 to enter the avoidance groove 56. When the driving component 18 is not blocked by the limiter 21, it will reset under the elastic force of the second spring 44, and the electromagnetic component 62 will be reversely energized to push the limiter 21 to reset, so as to prepare for the next concrete stress detection.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A concrete stress detection device, characterized in that: include: A detection base, wherein a conveying trough and movable areas symmetrically arranged on both sides of the conveying trough are arranged in the middle of the detection base, the movable areas are connected to the conveying trough, and a conveying member for conveying concrete is arranged in the conveying trough. The detection component is arranged in the activity area. When the detection component is subjected to external force, the detection component is kept close to the conveying member to detect the concrete on the conveying member. A driving assembly is arranged in the activity area, and the driving assembly is pushed in the reverse direction by the concrete on the conveying member, so that the driving assembly is stretched under force to contact the detection assembly, and the detection assembly is pushed close to the concrete to detect the concrete, wherein The detection component is provided with a first pusher, a rotating member and a second pusher. The first pusher is pushed by the driving component to drive the rotating member to rotate, and the rotating member drives the second pusher to move closer to the concrete on the conveying member. The driving assembly is provided with a rotating disk, a positioning member and a driving member. The rotating disk is mounted on the detection base, the positioning member is arranged on the rotating disk, and the driving member is arranged outside the positioning member and is limited by the stroke of the positioning member. The driving member is pushed in the opposite direction by the concrete on the conveying member, keeps in contact with the first pushing member, and drives it to move.

2. The concrete stress detection device according to claim 1, characterized in that: The first pushing member is provided with a plurality of first teeth, a sliding hole is provided in the middle of the first pushing member, positioning blocks are symmetrically arranged at both ends of the first pushing member in the active area, a sliding rod is provided between the positioning blocks, and the first pushing member is installed on the sliding rod through the sliding hole.

3. The concrete stress detection device according to claim 2, characterized in that: A rotating shaft is provided in the middle of the rotating member, and the rotating member is installed in the active area through the rotating shaft. A plurality of second teeth are provided on the rotating member, and the first teeth are meshed and connected with the second teeth. A first spring is provided on one end of the sliding rod close to the rotating member, and one end of the first spring contacts with a positioning block, and the other end contacts with the first pushing member. The height of the rotating member is greater than the height of the first pushing member plus the height of the second pushing member, and the second pushing member is located at the lower end of the first pushing member.

4. The concrete stress detection device according to claim 3, characterized in that: The second pushing member is composed of a mounting section and a sliding section, the mounting section and the sliding section are vertically arranged, the sliding section is provided with a third tooth that cooperates with the second tooth, the mounting section is provided with a first stress detector, and the detection base is provided with a through hole for the sliding section to slide.

5. The concrete stress detection device according to claim 1, characterized in that: A first mounting hole is provided in the middle of the positioning member, a positioning shaft is provided in the first mounting hole, and the positioning shaft is installed on the rotating disk. The positioning member consists of a first blocking part and a second blocking part. The positioning member is arranged in a "T" shape, and the width of the first blocking part is greater than the width of the second blocking part.

6. The concrete stress detection device according to claim 5, characterized in that: The middle of the driving member is hollowed out to form a through area, the positioning member is arranged in the through area, the width of the first blocking portion is matched with the width of the through area, a mounting portion is provided at one end of the driving member, a second spring is provided between the first blocking portion and the mounting portion, a driving wheel is provided at the other end of the driving member, a plurality of fourth teeth are provided on the driving wheel, the fourth teeth are matched with the first pushing member, and the driving wheel is extended to the through area through an extension rod to contact the second blocking portion of the positioning member.

7. The concrete stress detection device according to claim 6, characterized in that: The mounting portion is provided with a T-block, the mounting portion is provided with a force-bearing member, the force-bearing member is provided with a T-slot matched with the T-block, the force-bearing member is made of rubber material, and a second stress detector is provided in the middle of the force-bearing member.

8. The concrete stress detection device according to claim 7, characterized in that: The extension rod is provided with a symmetrical blocking block, and the blocking block is provided with a first plane, a second plane and an inclined plane. The first plane is connected to the second plane through the inclined plane. The length of the first plane is greater than the length of the second plane. The first plane is set toward the positioning member, and the second plane is set toward the driving wheel.

9. The concrete stress detection device according to claim 8, characterized in that: The driving member is provided with symmetrical avoidance grooves, the rotating disk is provided with a mounting rod, the mounting rod is provided with a limit member, the limit member is composed of a rotating part, an inclined part and a contact part, the inclined part and the contact part are connected by an arc part, the inclined part is arranged parallel to the inclined surface, the contact part is in contact with the extension rod, a rotating hole is arranged in the middle of the rotating part, the mounting rod is arranged in the rotating hole, and the rotating part is arranged in the avoidance groove.

10. The concrete stress detection device according to claim 9, characterized in that: Symmetrical electromagnetic components are provided on both sides of the driving component. The electromagnetic components are installed on the rotating disk and are arranged at positions corresponding to the contact parts. The electromagnetic components are energized to attract the limiting components to keep the contact parts rotating into the avoidance grooves.

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