Water conservancy dam strength simulation detection device
By designing a water conservancy embankment strength simulation and detection device including bottom plate, support column, roof plate, positioning device, electric push rod and adjustment column, the problems of model positioning and measurement angle adjustment are solved, the model is quickly and accurately positioned, and the measurement reliability and efficiency are improved.
Patent Information
- Application Number
- CN202510323491.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2045-03-19
AI Technical Summary
When measuring the model, the existing water conservancy embankment strength simulation and detection device needs to position the model and perform multi-angle measurements based on the inclination angle. Failure to position will lead to unreliable measurement results.
A water conservancy dam strength simulation and detection device including a base plate, a support column, a top plate, a positioning device, an electric push rod and a adjustment column is designed. Through the rotation and reset mechanism of the adjustment column, the model is quickly positioned, and through the cooperation of the hydraulic rod and the arc friction rod, the pressure during measurement is ensured to be uniform and the error of the measurement result is reduced.
The rapid and accurate positioning of the model is achieved, the reliability and efficiency of measurement is improved, the measurement results are close to the real dam data, and the error is reduced.
Smart Images

Figure CN120102313A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of dam strength detection, in particular to a hydraulic dam strength simulation detection device. Background Art
[0002] The design goal of the hydraulic dam strength simulation detection device is to simulate the actual working environment of the dam, detect the structural strength and stability of the dam, and promptly discover potential safety hazards, thereby ensuring the safety and reliability of the dam.
[0003] The patent with patent announcement number CN219284828U relates to a water conservancy dam strength simulation detection device, which relates to the field of water conservancy project detection technology and solves the problem of cumbersome installation of protective mechanisms. It includes an installation base and a protective plate, and also includes a support frame fixedly connected to the top surface of the installation base. The top port of the support frame is fixedly connected to the top frame of the central installation strength detection device body, and a connecting slider is fixedly connected on the outer edge surface of the strength detection device body. A slide groove is constructed on the protective plate. When the patent is used, the protective plate can simultaneously enclose the water conservancy dam sample without any other operation. At the same time, when the strength detection device body returns to its original position, the protective plate will also be driven to return to its original position. It is more convenient to use and the protective plate can be installed in place or restored to its original position without any other unnecessary operations, which has a better use effect.
[0004] In the above patent, the protective plate can simultaneously enclose the water conservancy dam sample without any other operation. At the same time, when the main body of the strength detection device is restored to its original position, the protective plate will also be driven to return to its original position. It is relatively convenient to use and can install the protective plate in place or restore it to its original position without any other unnecessary operation. It has a good use effect. However, when measuring the model, it is necessary to position the model and measure the model at multiple angles according to the inclination angle. Failure to position the model will lead to unreliable measurement results. Summary of the invention
[0005] In view of the deficiencies in the prior art, the present invention provides a hydraulic dam strength simulation detection device, which solves the problems raised in the above-mentioned background technology.
[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a water conservancy dam strength simulation detection device, including a bottom plate, a support column is fixedly installed on the top of the bottom plate, a top plate is fixedly penetrated through the circumferential surface of the support column, a positioning device is arranged at the bottom of the top plate, an electric push rod is fixedly installed on the top of the bottom plate, a positioning frame is fixedly installed on the top of the bottom plate, the output end of the electric push rod slides through the inner and outer walls of the positioning frame, a circular hole is provided on the surface of the positioning frame, a limiting hole is provided on the surface of the circular hole, an adjusting column is sleeved on the inner wall of the circular hole, the positioning plate is slidably installed on the top of the bottom plate, and one side of the adjusting column The end is fixedly mounted on the surface of the positioning plate, the other end of the adjusting column is set to an cambered surface, a plurality of limit blocks are fixedly mounted on the circumferential surface of the adjusting column, a triangular block is slidably mounted on the top of the bottom plate, the triangular block is fixedly mounted on the output end of the electric push rod, a hydraulic rod is fixedly mounted on the top of the top plate, a stabilizing device for limiting the speed of the hydraulic rod and a protective device for protecting the stabilizing device are provided at the bottom of the top plate, after the position of the model is positioned, the adjusting column is released, the adjusting column is reset by a reset spring and drives the adjusting column to rotate, after the adjusting column rotates, it is no longer in contact with the limit hole and is circularly blocked by the limit block so that the limit block is limited.
[0007] According to the above technical solution, the positioning device also includes: a measuring device, a hollow box and a square plate. The measuring device is arranged at the bottom of the output end of the hydraulic rod, the hollow box is fixedly installed at the bottom of the top plate, and the square plate is fixedly installed at the bottom of the hollow box. The triangular block moves to contact the model, and the model is lifted to the top by the inclined surface design of the triangular block.
[0008] According to the above technical solution, a reset spring is arranged between the adjusting column and the circular hole, the limiting hole is in contact with the limiting block, and the adjusting column is reset by the reset spring.
[0009] According to the above technical solution, the stabilizing device includes: an elastic telescopic rod, a sliding plate, an arc-shaped friction rod, a transmission oblique block, a square rod and a circular vertical rod, the elastic telescopic rod is fixedly mounted on the bottom of the top plate, the sliding plate is slidably mounted on the inner wall of the hollow box, the sliding plate is fixedly mounted on the bottom of the free end of the elastic telescopic rod, the arc-shaped friction rod is slidably mounted on the bottom of the sliding plate, the transmission oblique block is fixedly mounted on the circumferential surface of the output end of the hydraulic rod, the square rod is slidably mounted on the top of the square plate, one end of the circular vertical rod is fixedly mounted on the top of the square rod, and the other end of the circular vertical rod is fixedly mounted on the bottom of the transmission oblique block, so that the resistance of the hydraulic rod increases when it moves toward the bottom, and the resistance of the hydraulic rod increases and slowly decreases when it moves toward the bottom.
[0010] According to the above technical solution, the stabilizing device also includes: an inflation cylinder, a sealing plate, an L-shaped connecting rod and an inflation hole. The inflation cylinder is fixedly mounted on the inner wall of the hollow box, the sealing plate is slidably mounted on the inner wall of the inflation cylinder, one end of the L-shaped connecting rod is fixedly mounted on the surface of the square rod, and the other end of the L-shaped connecting rod is fixedly mounted on the surface of the sealing plate. The inflation holes are all opened on the surface of the inflation cylinder. Since some of the inflation holes are no longer in circulation with the interior of the inflation cylinder, inflation can only be performed slowly when the interior of the inflation cylinder is inflated.
[0011] According to the above technical solution, a No. 1 spring is arranged between the sealing plate and the inflation cylinder, the arc-shaped friction rod is in contact with the output end of the hydraulic rod, and the sealing plate is driven to reset by the No. 1 spring.
[0012] According to the above technical solution, the protective device includes: a sliding inclined block, a fixed plate, a rotating plate and a blocking plate. The sliding inclined block is slidably installed on the inner wall of the hollow box, the fixed plate is fixedly installed on the side of the sliding inclined block away from the hollow box, the rotating plate is rotatably installed on the side of the fixed plate away from the sliding inclined block, and the blocking plate is fixedly installed on the top of the fixed plate. The movement of the sliding inclined block will contact the arc friction rod and push the arc friction rod to move in the direction of the hydraulic rod.
[0013] According to the above technical solution, a torsion spring is arranged between the rotating plate and the fixed plate, the blocking plate is in contact with the rotating plate, and the rotating plate is driven to reset by the torsion spring.
[0014] The present invention provides a hydraulic dam strength simulation detection device, which has the following beneficial effects: (1) The invention can quickly position the model by adjusting the column so that it no longer contacts the limit hole after rotation and the limit block is blocked by a circle so that the limit block is limited. The invention is convenient and fast, and improves work efficiency. The triangular block moves to contact the model, and the inclined surface design of the triangular block lifts the model to the top to move the angle, so that the model can be adjusted according to the required angle before testing, so that the measured value is closer to the data of the real dam, and the reliability of the device is improved.
[0015] (2) In the present invention, when the output end of the hydraulic rod moves toward the bottom, the friction force between the arc-shaped friction rod and the output end of the hydraulic rod increases, which increases the resistance when the hydraulic rod moves toward the bottom and decreases slowly, so that the pressure applied by the measuring device to the model during measurement is more uniform, reducing the error of the measurement result and improving the reliability of the device. After the arc-shaped friction rod moves, it no longer contacts the hydraulic rod, so when the output end of the hydraulic rod moves to the bottom, it no longer contacts the arc-shaped friction rod, so that when the output end of the hydraulic rod moves to the top, it will not be affected by the deceleration effect, thereby reducing the detection time without affecting the detection result and improving work efficiency.
[0016] (3) In the present invention, when the sealing plate is reset by the No. 1 spring, some of the inflation holes are no longer in communication with the interior of the inflation cylinder, so that the inflation inside the inflation cylinder can only be carried out slowly, so that there is sufficient time for the output end of the hydraulic rod to move toward the top, thereby improving the practicality of the device. The sliding inclined block moves to contact the arc-shaped friction rod and pushes the arc-shaped friction rod to move in the direction of the hydraulic rod, so that the arc-shaped friction rod contacts the output end of the hydraulic rod again, so that the device returns to its initial state, thereby improving the practicality and portability of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the top structure of the bottom plate of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the hollow box of the present invention; Figure 4 This is a schematic diagram of the top structure of the square plate of the present invention; Figure 5 It is a schematic diagram of the structure of the stabilizing device of the present invention; Figure 6 This is a schematic diagram of the positional relationship between the rotating plate and the fixed plate of the present invention; Figure 7 It is a schematic diagram of the protection structure of the present invention.
[0018] In the figure: 1, bottom plate; 2, support column; 3, top plate; 41, electric push rod; 42, positioning frame; 43, adjusting column; 44, positioning plate; 45, limit block; 46, triangular block; 47, hydraulic rod; 48, measuring device; 49, hollow box; 410, square plate; 51, elastic telescopic rod; 52, sliding plate; 53, arc friction rod; 54, transmission inclined block; 55, square rod; 56, circular vertical rod; 57, inflator; 58, sealing plate; 59, L-shaped connecting rod; 510, inflation hole; 61, sliding inclined block; 62, fixed plate; 63, rotating plate; 64, blocking plate. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0020] See also Figure 1 - Figure 3 An embodiment of the present invention is: a hydraulic dam strength simulation detection device, comprising a bottom plate 1, a support column 2 is fixedly installed on the top of the bottom plate 1, a top plate 3 is fixedly penetrated on the circumferential surface of the support column 2, a positioning device is arranged at the bottom of the top plate 3, an electric push rod 41 is fixedly installed on the top of the bottom plate 1, a positioning frame 42 is fixedly installed on the top of the bottom plate 1, the output end of the electric push rod 41 slides through the inner and outer walls of the positioning frame 42, a circular hole is provided on the surface of the positioning frame 42, a limiting hole is provided on the surface of the circular hole, an adjusting column 43 is sleeved on the inner wall of the circular hole, a positioning plate 44 is slidably installed on the top of the bottom plate 1, one end of the adjusting column 43 is fixedly installed on the surface of the positioning plate 44, the other end of the adjusting column 43 is set as an arc surface, a plurality of limiting blocks 45 are fixedly installed on the circumferential surface of the adjusting column 43, a triangular block 46 is slidably installed on the top of the bottom plate 1, the triangular block 46 is fixedly installed on the output end of the electric push rod 41, a hydraulic rod 47 is fixedly installed on the top of the top plate 3, the model can be quickly positioned, which is convenient and fast, and the work efficiency is improved.
[0021] The positioning device also includes: a measuring device 48, a hollow box 49 and a square plate 410. The measuring device 48 is arranged at the bottom of the output end of the hydraulic rod 47, the hollow box 49 is fixedly installed at the bottom of the top plate 3, and the square plate 410 is fixedly installed at the bottom of the hollow box 49, so that the model can be adjusted according to the required angle before detection, so that the measured value is closer to the data of the real dam, thereby improving the reliability of the device.
[0022] A reset spring is arranged between the adjusting column 43 and the circular hole. The limiting hole contacts the limiting block 45 , and the adjusting column 43 is reset by the reset spring.
[0023] When the present embodiment is working, the model is placed on the top of the bottom plate 1, and the hydraulic rod 47 is started. The output end of the hydraulic rod 47 moves toward the bottom, which drives the measuring device 48 to move toward the bottom. The measuring device 48 moves toward the bottom, which contacts the model and measures the model. The adjusting column 43 is rotated toward the top. The rotation of the adjusting column 43 drives the limit block 45 to rotate toward the top. After the limit block 45 coincides with the limit hole, the adjusting column 43 is pushed inward. The movement of the adjusting column 43 drives the positioning plate 44 to move toward the inside of the positioning frame 42. The movement of the positioning frame 42 contacts the model. After the position of the model is positioned, the adjusting column 43 is released. The adjusting column 43 is reset by the reset spring. The spring reset drives the adjusting column 43 to rotate. After the adjusting column 43 rotates, it no longer contacts the limiting hole and is circularly blocked by the limiting block 45, so that the limiting block 45 is limited, and the model can be quickly positioned, which is convenient and fast, and improves work efficiency. The electric push rod 41 is started, and the output end of the electric push rod 41 moves to drive the triangular block 46 to move toward the inside of the positioning frame 42. The triangular block 46 moves and contacts the model, and the inclined surface design of the triangular block 46 lifts the model to the top to move the angle, so that the model can be adjusted according to the required angle before testing, so that the measured value is closer to the data of the real dam, and the reliability of the device is improved.
[0024] See also Figure 1 - Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, a stabilizing device for limiting the speed of the hydraulic rod 47 and a protective device for protecting the stabilizing device are provided at the bottom of the top plate 3, wherein the stabilizing device comprises: an elastic telescopic rod 51, a sliding plate 52, an arcuate friction rod 53, a transmission oblique block 54, a square rod 55 and a circular vertical rod 56, the elastic telescopic rod 51 is fixedly mounted on the bottom of the top plate 3, the sliding plate 52 is slidably mounted on the inner wall of the hollow box 49, the sliding plate 52 is fixedly mounted on the bottom of the free end of the elastic telescopic rod 51, the arcuate friction rod 53 is slidably mounted on the bottom of the sliding plate 52, the transmission oblique block 54 is fixedly mounted on the circumferential surface of the output end of the hydraulic rod 47, the square rod 55 is slidably mounted on the top of the square plate 410, one end of the circular vertical rod 56 is fixedly mounted on the top of the square rod 55, and the other end of the circular vertical rod 56 is fixedly mounted on the bottom of the transmission oblique block 54, so that the pressure applied to the model by the measuring device 48 during measurement is more uniform, the error of the measurement result is reduced, and the reliability of the device is improved.
[0025] The stabilizing device also includes: an inflation cylinder 57, a sealing plate 58, an L-shaped connecting rod 59 and an inflation hole 510. The inflation cylinder 57 is fixedly mounted on the inner wall of the hollow box 49, the sealing plate 58 is slidably mounted on the inner wall of the inflation cylinder 57, one end of the L-shaped connecting rod 59 is fixedly mounted on the surface of the square rod 55, and the other end of the L-shaped connecting rod 59 is fixedly mounted on the surface of the sealing plate 58. The inflation holes 510 are all opened on the surface of the inflation cylinder 57, so that when the output end of the hydraulic rod 47 moves to the top, there is sufficient time to complete the movement, thereby improving the practicability of the device.
[0026] A No. 1 spring is arranged between the sealing plate 58 and the inflation cylinder 57. The arc-shaped friction rod 53 contacts the output end of the hydraulic rod 47, and the sealing plate 58 is driven to reset by the No. 1 spring.
[0027] The protective device includes: a sliding bevel block 61, a fixed plate 62, a rotating plate 63 and a blocking plate 64. The sliding bevel block 61 is slidably installed on the inner wall of the hollow box 49, the fixed plate 62 is fixedly installed on the side of the sliding bevel block 61 away from the hollow box 49, the rotating plate 63 is rotatably installed on the side of the fixed plate 62 away from the sliding bevel block 61, and the blocking plate 64 is fixedly installed on the top of the fixed plate 62, so that the arc-shaped friction rod 53 contacts the output end of the hydraulic rod 47 again, so that the device returns to its initial state, thereby improving the practicability and portability of the device.
[0028] A torsion spring is provided between the rotating plate 63 and the fixed plate 62 , and the blocking plate 64 is in contact with the rotating plate 63 , and the rotating plate 63 is driven to reset by the torsion spring.
[0029] When the embodiment is working, the output end of the hydraulic rod 47 moves toward the bottom and contacts with the arc-shaped friction rod 53. The output end of the hydraulic rod 47 moves toward the bottom and is subject to the increased friction between the arc-shaped friction rod 53 and the output end of the hydraulic rod 47, which increases the resistance when the hydraulic rod 47 moves toward the bottom, increases the resistance when the hydraulic rod 47 moves toward the bottom and slowly decreases, so that the pressure applied by the measuring device 48 to the model during measurement is more uniform, reduces the error of the measurement result, and improves the reliability of the device. The output end of the hydraulic rod 47 moves toward the bottom and drives the transmission bevel block 54 to move toward the bottom. The transmission bevel block 54 moves and contacts with the square rod 55. The movement of the transmission bevel block 54 will drive the square rod 55 to move away from the hydraulic rod 47, the movement of the square rod 55 will drive the circular vertical rod 56 to move away from the hydraulic rod 47, the movement of the circular vertical rod 56 will drive the arcuate friction rod 53 to move away from the hydraulic rod 47, and the arcuate friction rod 53 will no longer contact with the hydraulic rod 47 after movement, so that when the output end of the hydraulic rod 47 moves to the bottom, the output end of the hydraulic rod 47 no longer contacts with the arcuate friction rod 53, so that when the output end of the hydraulic rod 47 moves to the top, it will not be affected by the deceleration effect, thereby reducing the detection time without affecting the detection results and improving work efficiency.
[0030] The movement of the square rod 55 will drive the L-shaped connecting rod 59 to move toward the inflatable cylinder 57. The movement of the L-shaped connecting rod 59 will drive the sealing plate 58 to move. The movement of the sealing plate 58 will squeeze the air inside the inflatable cylinder 57 and discharge it through the inflation hole 510. When the sealing plate 58 is reset by the No. 1 spring and drives the sealing plate 58 to reset, since some of the inflation holes 510 are no longer in communication with the inside of the inflatable cylinder 57, the inflation inside the inflatable cylinder 57 can only be carried out slowly, so that there is enough time to complete the movement of the output end of the hydraulic rod 47 to the top. The transmission bevel 54 moves toward the top and contacts with the rotating plate 63. The rotating plate 63 is blocked by the blocking plate 64 so that the rotating plate 63 cannot rotate toward the top. The rotating plate 63 moves toward the top and drives the sliding bevel 61 to move toward the top. The movement of the sliding bevel 61 contacts with the arc-shaped friction rod 53 and pushes the arc-shaped friction rod 53 to move toward the direction of the hydraulic rod 47, so that the arc-shaped friction rod 53 contacts with the output end of the hydraulic rod 47 again, so that the device returns to the initial state, thereby improving the practicability and portability of the device.
[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A hydraulic dam strength simulation detection device, comprising a bottom plate (1), characterized in that: A support column (2) is fixedly mounted on the top of the bottom plate (1), a top plate (3) is fixedly penetrated through the circumferential surface of the support column (2), a positioning device is arranged at the bottom of the top plate (3), an electric push rod (41) is fixedly mounted on the top of the bottom plate (1), a positioning frame (42) is fixedly mounted on the top of the bottom plate (1), an output end of the electric push rod (41) slides through the inner and outer walls of the positioning frame (42), a circular hole is provided on the surface of the positioning frame (42), a limiting hole is provided on the surface of the circular hole, an adjusting column (43) is sleeved on the inner wall of the circular hole, and the positioning plate (44) is slidably mounted on the bottom plate (1). At the top of the bottom plate (1), one end of the adjusting column (43) is fixedly mounted on the surface of the positioning plate (44), the other end of the adjusting column (43) is arranged as an arc surface, a plurality of limit blocks (45) are fixedly mounted on the circumferential surface of the adjusting column (43), a triangular block (46) is slidably mounted on the top of the bottom plate (1), the triangular block (46) is fixedly mounted on the output end of the electric push rod (41), a hydraulic rod (47) is fixedly mounted on the top of the top plate (3), and a stabilizing device for limiting the speed of the hydraulic rod (47) and a protective device for protecting the stabilizing device are arranged at the bottom of the top plate (3).
2. A hydraulic dam strength simulation detection device according to claim 1, characterized in that: The positioning device further comprises: a measuring device (48), a hollow box (49) and a square plate (410); the measuring device (48) is arranged at the bottom of the output end of the hydraulic rod (47); the hollow box (49) is fixedly mounted on the bottom of the top plate (3); and the square plate (410) is fixedly mounted on the bottom of the hollow box (49).
3. A hydraulic dam strength simulation detection device according to claim 2, characterized in that: A return spring is provided between the adjusting column (43) and the circular hole, and the limiting hole is in contact with the limiting block (45).
4. A hydraulic dam strength simulation detection device according to claim 3, characterized in that: The stabilizing device comprises: an elastic telescopic rod (51), a sliding plate (52), an arc-shaped friction rod (53), a transmission oblique block (54), a square rod (55) and a circular vertical rod (56); the elastic telescopic rod (51) is fixedly mounted on the bottom of the top plate (3); the sliding plate (52) is slidably mounted on the inner wall of the hollow box (49); the sliding plate (52) is fixedly mounted on the bottom of the free end of the elastic telescopic rod (51); the arc-shaped friction rod (53) is slidably mounted on the bottom of the sliding plate (52); the transmission oblique block (54) is fixedly mounted on the circumferential surface of the output end of the hydraulic rod (47); the square rod (55) is slidably mounted on the top of the square plate (410); one end of the circular vertical rod (56) is fixedly mounted on the top of the square rod (55); and the other end of the circular vertical rod (56) is fixedly mounted on the bottom of the transmission oblique block (54).
5. A hydraulic dam strength simulation detection device according to claim 4, characterized in that: The stabilizing device further comprises: an inflating cylinder (57), a sealing plate (58), an L-shaped connecting rod (59) and an inflating hole (510); the inflating cylinder (57) is fixedly mounted on the inner wall of the hollow box (49); the sealing plate (58) is slidably mounted on the inner wall of the inflating cylinder (57); one end of the L-shaped connecting rod (59) is fixedly mounted on the surface of the square rod (55); the other end of the L-shaped connecting rod (59) is fixedly mounted on the surface of the sealing plate (58); and the inflating holes (510) are all opened on the surface of the inflating cylinder (57).
6. A hydraulic dam strength simulation detection device according to claim 5, characterized in that: A No. 1 spring is provided between the sealing plate (58) and the inflation cylinder (57), and the arc-shaped friction rod (53) is in contact with the output end of the hydraulic rod (47).
7. A hydraulic dam strength simulation detection device according to claim 6, characterized in that: The protective device comprises: a sliding inclined block (61), a fixed plate (62), a rotating plate (63) and a blocking plate (64); the sliding inclined block (61) is slidably mounted on the inner wall of the hollow box (49); the fixed plate (62) is fixedly mounted on a side of the sliding inclined block (61) away from the hollow box (49); the rotating plate (63) is rotatably mounted on a side of the fixed plate (62) away from the sliding inclined block (61); and the blocking plate (64) is fixedly mounted on the top of the fixed plate (62).
8. A hydraulic dam strength simulation detection device according to claim 7, characterized in that: A torsion spring is provided between the rotating plate (63) and the fixed plate (62), and the blocking plate (64) is in contact with the rotating plate (63).
Citation Information
Patent Citations
Concrete strength detection device for constructional engineering
CN212871961U
Concrete strength detector with high detection sensitivity for building safety detection
CN216160346U
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CN216228088U
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CN219284828U
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CN219573756U