A concrete strength testing device for road and bridge construction

Abstract

The present invention relates to a concrete strength detection device for road and bridge construction, comprising a fixing component for fixing a concrete block to be tested, a torsion power component for torsionally deforming the concrete block to be tested, and a fixing seat for installation and fixing, and also comprising a pressure mechanism for performing a top pressure test on the center position of the concrete block to be tested, and a torsion adaptation mechanism for cooperating with the pressure mechanism to ensure that the pressure applied to the concrete block to be tested is stable during the pressure application process. The pressure mechanism is arranged at the center position of the upper end of the concrete block to be tested, and the bottoms of both ends of the pressure mechanism cooperate with the concrete block to be tested through the torsion adaptation mechanism. A pressure regulating mechanism for adjusting the pressure of the torsion adaptation mechanism and ensuring the stability of the torsion adaptation mechanism is installed inside the pressure mechanism, so as to solve the technical problem that in the existing concrete test, in order to ensure multi-dimensional testing of concrete, the pressure piece often slips when pressure is applied during the concrete torsion process, resulting in inaccurate experimental data.

Description

Technical Field

[0001] The invention relates to the field of concrete detection, and in particular to a concrete strength detection device for road and bridge construction. Background Art

[0002] In bridge engineering and subsequent use, the inspection of concrete needs to pay attention to the following strength parameters, durability parameters, deformation parameters, appearance quality parameters, etc., so that by effectively inspecting and testing the concrete for bridges, the stress conditions of bridges in real environments can be effectively simulated, so as to effectively inspect the strength and other parameters of concrete to ensure the safety of subsequent use. In addition, in the current use of bridges, because they are generally supported by piers and the center is an overhead structure, it is found in actual use that when large and heavy-loaded vehicles travel on bridges, the pressure on an entire bridge deck is from the edge to the middle, and then from the middle to the edge. When the vehicle travels to the central area, the concrete at the contact position between the entire bridge deck and the pier is actually subjected to tensile stress and torsional stress at the center of the bridge deck, as well as the weight of the vehicle and the sinking bending force of the entire bridge deck. Therefore, it is currently found that when testing concrete, it is necessary to apply the central bending force after providing preliminary torsion to the concrete, so as to judge the stress conditions and limit values ​​of the concrete in a complex environment.

[0003] In contrast, a Chinese invention with publication number CN110296901A discloses a composite force test device and method suitable for steel-concrete special-shaped columns, which performs composite dynamic tests on concrete in a vertical manner. However, in actual tests, it is found that because in the test pieces for composite dynamics, general concrete structural members are long strip structures, and when performing central pressure tests after twisting them, the fracture point is often not centered due to torsion, and due to composite dynamics, the degree of torsion is not uniform, and the center point of torsion is not centered. Under the current ideal state, the bending dynamics are generally corresponding to the center point of the concrete structural member, but the center point will undergo microscopic changes during the test. If the dynamic member cannot follow the adjustment, the pressure member may collapse, and the measurement result may be too large or too small. Summary of the invention

[0004] The present invention provides a concrete strength detection device for road and bridge construction, so as to solve the technical problem that in the existing concrete test, in order to ensure multi-dimensional testing of concrete, when pressure is applied during the concrete torsion process, pressure pieces often slip, resulting in inaccurate experimental data.

[0005] A road and bridge construction concrete strength detection device of the present invention adopts the following technical scheme: it includes a fixing component for fixing a concrete block to be tested, a torsion power component for torsionally deforming the concrete block to be tested, and a fixing seat for installation and fixing, the fixing seat is provided with torsion power components on both sides of the upper end, the fixing seat is provided with power output ends of the torsion power components, the concrete block to be tested is fixed between the two fixing components, and also includes a pressure mechanism for performing a top pressure test on the center position of the concrete block to be tested, and a torsion adaptation mechanism for cooperating with the pressure mechanism to ensure that the pressure applied to the concrete block to be tested is stable during the pressure application process, the pressure mechanism is arranged at the center position of the upper end of the concrete block to be tested, the bottoms of both ends of the pressure mechanism cooperate with the concrete block to be tested through the torsion adaptation mechanism, the pressure mechanism is provided with a pressure regulating mechanism for adjusting the pressure of the torsion adaptation mechanism and ensuring the stability of the torsion adaptation mechanism, and the fixing component and the pressure mechanism are provided with pressure sensors;

[0006] The pressure mechanism comprises a pressure rod, a central component is installed at the bottom of the pressure rod, two ends of the central component are respectively connected to side pressure seats, and two torsion adaptation mechanisms are symmetrically arranged at the bottom of the side pressure seats;

[0007] The torsion adaptation mechanism includes an arc-shaped fixing seat and an arc-shaped adjustment seat. The arc-shaped fixing seat is an arc-shaped opening structure. The inner side of the arc-shaped fixing seat is rotatably connected to the arc-shaped adjustment seat. The arc-shaped adjustment seat cooperates with the arc-shaped fixing seat through an inner support frame. A reset component is arranged between the arc-shaped fixing seat and the arc-shaped adjustment seat, and the side of the inner support frame is connected to the torsion adaptation mechanism through a pressure transmission component, so as to ensure that when the arc-shaped adjustment seat rotates according to the deformation trend of the concrete block to be tested, the pressure of the arc-shaped adjustment seat on the same side can be balanced and stable through the pressure transmission component.

[0008] Furthermore, the pressure transmission component includes an internal pressure regulating cylinder, which is installed inside the side pressure seat and located on the side of the arc-shaped fixed seat. The side of the arc-shaped fixed seat is formed with a through groove corresponding to the position of the internal pressure regulating cylinder. The inner support frame is provided with an arc-shaped extrusion strip corresponding to the position of the internal pressure regulating cylinder, and the thickness of the arc-shaped extrusion strip gradually increases along the rotation direction.

[0009] Furthermore, the reset assembly includes a reset spring arranged inside the inner support frame, the inner support frame is formed with an arc groove for accommodating the reset spring, the reset spring is an arc spring, and the arc fixing seat is provided with a protrusion corresponding to the inner end surface of the inner support frame to cooperate with the reset spring.

[0010] Furthermore, the central component includes a stabilizing seat, with central pull rods being provided at both ends of the stabilizing seat, the central pull rods passing through the side pressure seat to be connected to a rotating extrusion block of a pressure regulating mechanism located inside the side pressure seat, and an end pressing piece being provided on the stabilizing seat at the upper side of the central pull rod, the end pressing piece being pressed against the upper end of the side pressure seat, and the bottom surface of the end pressing piece being arc-shaped.

[0011] Furthermore, the pressure regulating mechanism also includes a central regulating oil cylinder, which is arranged at the central position inside the side pressure seat, and the oil supply end of the central regulating oil cylinder is connected to the oil outlet end of the internal pressure regulating oil cylinder through an oil pipe, and the pressure piston rod is arranged on the central regulating oil cylinder at one end corresponding to the end pressure piece, and the pressure piston rod is pressed against the outside of the rotating extrusion block, and a fixed extrusion block is arranged between the rotating extrusion block and the side pressure seat, and the fixed extrusion block is sleeved on the outside of the central pull rod and fixedly connected to the side pressure seat, and an internal support spring for supporting the rotating extrusion block is arranged on the inner side of the fixed extrusion block.

[0012] Furthermore, corresponding end surfaces of the rotating extrusion block and the fixed extrusion block are formed with protrusions and corresponding grooves.

[0013] Furthermore, the opening of the arc-shaped adjustment seat is 95 degrees.

[0014] Furthermore, when the rotating extrusion block and the fixed extrusion block are in their initial positions, a gap is provided between the rotating extrusion block and the fixed extrusion block, and a gap is provided between the end surface of the stabilizing seat and the side pressure seat in their initial positions.

[0015] Furthermore, the central pull rod is rotatably connected to the side pressure seat, and the central pull rod is fixedly connected to the rotating extrusion block.

[0016] Furthermore, one side of the torsion power assembly is fixedly connected to the fixing seat, and the other side of the torsion power assembly is installed on the fixing seat via a lateral adjustment assembly.

[0017] The beneficial effects of the present invention are as follows: the present invention ensures that the pressure applied downward by the pressure-applying mechanism can be stably transmitted to the concrete block to be tested through the retraction and multi-point fixing effects of the torsion adaptation mechanism, so as to perform pressure detection on the concrete block to be tested, and because torsion force is applied to the concrete block to be tested at the same time, when the bending area is not at the center position of the concrete block to be tested, the reference point of the downward pressure of the pressure-applying mechanism can be adjusted through the cooperation of the torsion adaptation mechanism and the pressure adjustment mechanism, thereby ensuring the stability of the pressure applied to the concrete block to be tested and the safety of the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a road and bridge construction concrete strength detection device of the present invention;

[0020] Figure 2 A schematic diagram of the stress condition of a concrete block to be tested in an embodiment of a concrete strength detection device for road and bridge construction of the present invention;

[0021] Figure 3 A first isometric view of a pressure mechanism of an embodiment of a concrete strength detection device for road and bridge construction of the present invention;

[0022] Figure 4 A second isometric view of a pressure mechanism of an embodiment of a concrete strength detection device for road and bridge construction of the present invention;

[0023] Figure 5 It is a schematic diagram of the matching relationship between the rotating extrusion block and the fixed extrusion block of an embodiment of a concrete strength detection device for road and bridge construction of the present invention;

[0024] Figure 6 It is a schematic diagram of the matching relationship between the central pull rod and the rotating extrusion block of an embodiment of a road and bridge construction concrete strength detection device of the present invention;

[0025] Figure 7 It is a schematic diagram of the coordination relationship between the internal pressure regulating cylinder and the central regulating cylinder of an embodiment of a concrete strength detection device for road and bridge construction of the present invention;

[0026] Figure 8 A first isometric view of an arc-shaped adjustment seat of an embodiment of a road and bridge construction concrete strength detection device of the present invention;

[0027] Fig. 9 A second isometric view of the arc-shaped adjustment seat of an embodiment of a road and bridge construction concrete strength detection device of the present invention;

[0028] Fig.10 It is a schematic diagram of the decomposition of the torsion adaptation mechanism of an embodiment of a concrete strength detection device for road and bridge construction of the present invention;

[0029] Fig.11 The present invention is a cross-sectional view of the internal structure of an arc-shaped fixing seat of an embodiment of a concrete strength detection device for road and bridge construction of the present invention.

[0030] In the figure: 1. concrete block to be tested; 2. fixing seat; 3. torsion power assembly; 4. fixing assembly; 5. compression power assembly; 6. pressure mechanism; 7. torsion adaptation mechanism; 8. pressure regulating mechanism; 61. pressure rod; 62. center assembly; 621. stabilizing seat; 622. end compression piece; 623. center pull rod; 63. side pressure seat; 71. arc fixing seat; 72. arc adjustment seat; 73. internal pressure regulating cylinder; 74. internal support frame; 75. reset spring; 711. through groove; 712. arc extrusion strip; 81. center adjustment cylinder; 82. pressure piston rod; 83. rotating extrusion block; 84. fixed extrusion block; 85. internal support spring. DETAILED DESCRIPTION

[0031] 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.

[0032] An embodiment of a road and bridge construction concrete strength detection device of the present invention is as follows Figures 1 to 11 As shown, it includes a fixing component 4 for fixing the concrete block 1 to be tested, a torsion power component 3 for torsionally deforming the concrete block 1 to be tested, and a fixing seat 2 for installation and fixing, the torsion power components 3 are installed on both sides of the upper end of the fixing seat 2, the fixing component 4 is installed at the power output end of the torsion power component 3, the concrete block 1 to be tested is fixed between the two fixing components 4, and also includes a pressure mechanism 6 for performing a top pressure test at the center position of the concrete block 1 to be tested and a torsion adaptation mechanism 7 for cooperating with the pressure mechanism 6 to ensure that the pressure applied to the concrete block 1 to be tested is stable during the pressure application process, the pressure mechanism 6 is arranged at the center position of the upper end of the concrete block 1 to be tested, the bottoms of both ends of the pressure mechanism 6 cooperate with the concrete block 1 to be tested through the torsion adaptation mechanism 7, the pressure adjustment mechanism 8 for adjusting the pressure of the torsion adaptation mechanism 7 and ensuring the stability of the torsion adaptation mechanism 7 is installed inside the pressure mechanism 6, and pressure sensors are arranged on the fixing component 4 and the pressure mechanism 6;

[0033] The pressure mechanism 6 includes a pressure rod 61, a central component 62 is installed at the bottom of the pressure rod 61, and both ends of the central component 62 are respectively connected to side pressure seats 63, and two torsion adaptation mechanisms 7 are symmetrically arranged at the bottom of the side pressure seat 63;

[0034] The torsion adaptation mechanism 7 includes an arc-shaped fixing seat 71 and an arc-shaped adjusting seat 72. The arc-shaped fixing seat 71 is an arc-shaped opening structure. The inner side of the arc-shaped fixing seat 71 is rotatably connected with the arc-shaped adjusting seat 72. The arc-shaped opening is used to engage and fix the edge position of the concrete block 1 to be tested. At the same time, the four arc-shaped fixing seats 71 and the arc-shaped adjusting seats 72 are used to fix the concrete block 1 to be tested, thereby ensuring the stability of power transmission and the stability of the test process. The arc-shaped adjusting seat 72 is matched with the arc-shaped fixing seat 71 through an inner support frame 74. A reset component is provided between the arc-shaped fixing seat 71 and the arc-shaped adjusting seat 72, and the side of the inner support frame 74 is connected to the torsion adaptation mechanism 7 through a pressure transmission component, thereby ensuring that when the arc-shaped adjusting seat 72 rotates according to the deformation trend of the concrete block 1 to be tested, the pressure of the arc-shaped adjusting seat 72 on the same side can be balanced and stable through the pressure transmission component.

[0035] In this embodiment, the pressure transmission component includes an internal pressure regulating cylinder 73, which is installed inside the side pressure seat 63 and located on the side of the arc-shaped fixed seat 71. A through groove 711 is formed on the side of the arc-shaped fixed seat 71 corresponding to the position of the internal pressure regulating cylinder 73. An arc-shaped extrusion strip 712 is provided on the inner support frame 74 corresponding to the position of the internal pressure regulating cylinder 73. The thickness of the arc-shaped extrusion strip 712 gradually increases along the rotation direction. When the arc-shaped adjusting seat 72 is subjected to the extrusion force of the twisted concrete block 1 to be tested, the rotation angles of the arc-shaped adjusting seat 72 at each point are different. However, the rotation of the arc-shaped adjustment seat 72 at this time drives the arc-shaped extrusion strip 712 on the side of the inner support frame 74, and the arc-shaped extrusion strip 712 squeezes the piston cylinder of the internal pressure regulating cylinder 73, so that the pressure inside the internal pressure regulating cylinder 73 is transmitted to the central regulating cylinder 81, and the pressure of the two internal pressure regulating cylinders 73 is first balanced through the oil chamber of the central regulating cylinder 81 to ensure the bite force of the two internal pressure regulating cylinders 73 on the same side, and at the same time, the pressure is transmitted to the rotating extrusion block 83 through the piston rod of the central regulating cylinder 81 to apply pressure to the central pull rod 623.

[0036] In this embodiment, the reset assembly includes a reset spring 75 disposed inside the inner support frame 74. The inner support frame 74 is formed with an arc groove for accommodating the reset spring 75. The reset spring 75 is an arc spring, such as Fig.11 As shown, a protrusion that cooperates with the return spring 75 is provided on the inner end surface of the arc-shaped fixing seat 71 corresponding to the inner support frame 74.

[0037] In this embodiment, if Figure 6As shown, the central component 62 includes a stabilizing seat 621, and central pull rods 623 are arranged at both ends of the stabilizing seat 621. The central pull rod 623 passes through the side pressure seat 63 and is connected to the rotating extrusion block 83 of the pressure regulating mechanism 8 located inside the side pressure seat 63. An end pressing piece 622 is arranged on the upper side of the central pull rod 623 on the stabilizing seat 621. The end pressing piece 622 is pressed on the upper end of the side pressure seat 63, and the bottom surface of the end pressing piece 622 is arc-shaped. When the arc-shaped adjusting seat 72 is greatly deformed, the end face of the concrete block 1 to be tested is twisted severely, but the bending degree is low. The pressure is transmitted to the central pull rod 623 through the internal pressure regulating cylinder 73 and the central regulating cylinder 81. At this time, an extrusion force is applied to the central pull rod 623 to ensure the stability of the end face, and the oil is used to transmit power, so that the vibration of the concrete block 1 to be tested when it is under pressure can be filtered out, thereby making the experimental data more stable. When the concrete block 1 to be tested When the degree of bending increases, the relative angle between the side pressure seat 63 and the pressure rod 61 increases, and the stable seat 621 drives the central pull rod 623 and the rotating extrusion block 83 to rotate. At the same time, because the fixed extrusion block 84 and the side pressure seat 63 are fixed, an inclined surface is provided between the rotating extrusion block 83 and the fixed extrusion block 84. The inclined surface extrusion will cause the rotating extrusion block 83 to move away from the fixed extrusion block 84. At the same time, because the center adjustment cylinder 81 provides pressure, the two forces will press against each other, so that the two forces are balanced with each other. Even if the bending point of the concrete block 1 to be tested is not in the center during the bending process, the adjustment between the end pressure pieces 622 and the side pressure seats 63 on both sides is independent of each other, so that the side pressure seats 63 on both sides can be adjusted to different degrees. After adjustment, it can be ensured that the side pressure seats 63 on both sides have enough and equal downward pressure, thereby ensuring that the downward pressure is stable.

[0038] In this embodiment, if Figure 7 As shown, the pressure regulating mechanism 8 also includes a central regulating oil cylinder 81, which is arranged at the central position inside the side pressure seat 63, and the oil supply end of the central regulating oil cylinder 81 is connected to the oil outlet end of the inner pressure regulating oil cylinder 73 through an oil pipe, and the pressure piston rod 82 is arranged on the central regulating oil cylinder 81 at one end corresponding to the end pressure piece 622, as shown in FIG. Figure 6 As shown, the pressure piston rod 82 is pressed against the outside of the rotating extrusion block 83, and a fixed extrusion block 84 is arranged between the rotating extrusion block 83 and the side pressure seat 63. The fixed extrusion block 84 is sleeved on the outside of the center pull rod 623 and fixedly connected to the side pressure seat 63. An inner support spring 85 for supporting the rotating extrusion block 83 is arranged on the inner side of the fixed extrusion block 84.

[0039] In this embodiment, if Figure 6 As shown, the corresponding end faces of the rotating extrusion block 83 and the fixed extrusion block 84 are both formed with protrusions and corresponding grooves.

[0040] In this embodiment, the opening of the arc-shaped adjustment seat 72 is 95 degrees, which ensures the engagement while avoiding burrs and protrusions on the concrete block 1 to be tested.

[0041] In this embodiment, when the rotating extrusion block 83 and the fixed extrusion block 84 are in their initial positions, a gap is provided between the rotating extrusion block 83 and the fixed extrusion block 84, and a gap is provided between the end surface of the stabilizing seat 621 and the side pressure seat 63 in their initial positions.

[0042] In this embodiment, the central pull rod 623 is rotatably connected to the side pressure seat 63 , and the central pull rod 623 is fixedly connected to the rotating extrusion block 83 .

[0043] In this embodiment, if Figure 1 As shown, one side of the torsion power assembly 3 is fixedly connected to the fixing seat 2, and the other side of the torsion power assembly 3 is installed on the fixing seat 2 through a lateral adjustment assembly.

[0044] The working principle is as follows: according to the concrete block 1 to be tested, a torsion adaptation mechanism 7 of suitable specifications is pressed on the central bend of the concrete block 1 to be tested. At this time, the torsion power component 3 is started to drive the fixing component 4 to make the concrete block 1 to be tested have a torsional force, and then the compression power component 5 is started to drive the pressure mechanism 6 to press down the concrete block 1 to be tested;

[0045] At the initial stage of downward pressure of the pressure mechanism 6, the four arc-shaped adjustment seats 72 preliminarily fix the end surface of the concrete block 1 to be tested, and at the same time, the arc-shaped adjustment seat 72 preliminarily turns over to squeeze the reset spring 75, and the arc-shaped adjustment seat 72, the inner support frame 74 and the arc-shaped squeezing strip 712 turn over to provide preliminary pressure to the inner pressure regulating cylinder 73, so as to ensure that the internal pressure of the inner pressure regulating cylinder 73 and the central regulating cylinder 81 are preliminarily balanced;

[0046] Because the concrete block 1 to be tested is subjected to dynamic twisting at both ends, the four arc-shaped adjustment seats 72 are not in the same plane and the rotation angles are also deviated. In the process of continued downward pressure, when the rotation angle of the arc-shaped adjustment seat 72 gradually increases, the end face of the concrete block 1 to be tested is severely twisted, but the bending degree is low. The pressure is transmitted to the center pull rod 623 through the internal pressure regulating cylinder 73 and the center regulating cylinder 81. At this time, an extrusion force is applied to the center pull rod 623 to ensure the stability of the end face. In addition, the power is transmitted by oil, which can filter out the vibration of the concrete block 1 to be tested when it is under pressure, thereby making the experimental data more stable.

[0047] When the bending degree of the concrete block 1 to be tested increases, the relative angle between the side pressure seat 63 and the pressure rod 61 increases, and the stabilizing seat 621 drives the central pull rod 623 and the rotating extrusion block 83 to rotate. At the same time, because the fixed extrusion block 84 and the side pressure seat 63 are fixed, an inclined surface is provided between the rotating extrusion block 83 and the fixed extrusion block 84. The inclined surface extrusion will cause the rotating extrusion block 83 to move away from the fixed extrusion block 84. At the same time, because the central regulating cylinder 81 provides pressure, the two forces will be squeezed against each other, so that the two forces are balanced with each other. The balance here is to ensure that the power during downward pressure can be stable.

[0048] Even if the bending point of the concrete block 1 to be tested is not in the center during the bending process, the adjustment between the end pressure pieces 622 and the side pressure seats 63 on both sides is independent of each other. The two side pressure seats 63 rotate to different degrees with the corresponding center pull rod 623 as the axis, so that the side pressure seats 63 on both sides can undergo different degrees of follow-up rotation adjustment. Although the rotation angles are different, because the bottom surface of the end pressure piece 622 is an arc-shaped surface, the downward extrusion force can ensure stability during the rotation process. After adjustment, the side pressure seats 63 on both sides can ensure that they have enough and the same downward pressure, thereby ensuring the stability of the downward pressure, and then ensuring the stability and uniformity of the pressure during the entire downward pressure process, thereby improving the accuracy of the experimental data.

[0049] 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, improvements, etc. 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 strength detection device for road and bridge construction, comprising a fixing assembly (4) for fixing a concrete block (1) to be tested, a torsion power assembly (3) for torsionally deforming the concrete block (1) to be tested, and a fixing seat (2) for mounting and fixing, wherein the torsion power assembly (3) is mounted on both sides of the upper end of the fixing seat (2), the fixing assembly (4) is mounted on the power output end of the torsion power assembly (3), and the concrete block (1) to be tested is fixed between two fixing assemblies (4), characterized in that: It also includes a pressure mechanism (6) for performing a top pressure test on the center position of the concrete block (1) to be tested, and a torsion adaptation mechanism (7) for cooperating with the pressure mechanism (6) to ensure that the pressure applied to the concrete block (1) to be tested is stable during the pressure application process. The pressure mechanism (6) is arranged at the center position of the upper end of the concrete block (1) to be tested, and the bottoms of both ends of the pressure mechanism (6) cooperate with the concrete block (1) to be tested through the torsion adaptation mechanism (7). A pressure adjustment mechanism (8) for adjusting the pressure of the torsion adaptation mechanism (7) and ensuring the stability of the torsion adaptation mechanism (7) is installed inside the pressure mechanism (6), and pressure sensors are arranged on both the fixing component (4) and the pressure mechanism (6); The pressure mechanism (6) comprises a pressure rod (61), a central component (62) is installed at the bottom of the pressure rod (61), both ends of the central component (62) are respectively connected to side pressure seats (63), and two torsion adaptation mechanisms (7) are symmetrically arranged at the bottom of the side pressure seat (63); The torsion adaptation mechanism (7) comprises an arc-shaped fixing seat (71) and an arc-shaped adjustment seat (72); the arc-shaped fixing seat (71) is an arc-shaped opening structure; the inner side of the arc-shaped fixing seat (71) is rotatably connected to the arc-shaped adjustment seat (72); the arc-shaped adjustment seat (72) cooperates with the arc-shaped fixing seat (71) via an inner support frame (74); a reset component is provided between the arc-shaped fixing seat (71) and the arc-shaped adjustment seat (72); and the side of the inner support frame (74) is connected to the torsion adaptation mechanism (7) via a pressure transmission component, so as to ensure that when the arc-shaped adjustment seat (72) rotates according to the deformation trend of the concrete block (1) to be tested, the pressure of the arc-shaped adjustment seat (72) on the same side can be balanced and stable through the pressure transmission component.

2. A road and bridge construction concrete strength detection device according to claim 1, characterized in that: The pressure transmission component comprises an internal pressure regulating oil cylinder (73), the internal pressure regulating oil cylinder (73) being installed inside the side pressure seat (63) and located on the side of the arc-shaped fixing seat (71), a through groove (711) being formed on the side of the arc-shaped fixing seat (71) at a position corresponding to the internal pressure regulating oil cylinder (73), and an arc-shaped extrusion strip (712) being provided on the inner support frame (74) at a position corresponding to the internal pressure regulating oil cylinder (73), and the thickness of the arc-shaped extrusion strip (712) gradually increases along the rotation direction.

3. A road and bridge construction concrete strength detection device according to claim 2, characterized in that: The reset assembly comprises a reset spring (75) arranged inside the inner support frame (74); an arc-shaped groove for accommodating the reset spring (75) is formed on the inner support frame (74); the reset spring (75) is an arc-shaped spring; and a protrusion for matching the reset spring (75) is arranged on the inner end surface of the arc-shaped fixing seat (71) corresponding to the inner support frame (74).

4. A road and bridge construction concrete strength detection device according to claim 3, characterized in that: The central component (62) includes a stabilizing seat (621), and central pull rods (623) are provided at both ends of the stabilizing seat (621). The central pull rod (623) passes through the side pressure seat (63) and is connected to a rotating extrusion block (83) of a pressure regulating mechanism (8) located inside the side pressure seat (63). An end pressing piece (622) is provided on the stabilizing seat (621) on the upper side of the central pull rod (623). The end pressing piece (622) is pressed on the upper end of the side pressure seat (63), and the bottom surface of the end pressing piece (622) is arc-shaped.

5. A road and bridge construction concrete strength detection device according to claim 4, characterized in that: The pressure regulating mechanism (8) further comprises a central regulating oil cylinder (81), wherein the central regulating oil cylinder (81) is arranged at a central position inside the side pressure seat (63), wherein an oil supply end of the central regulating oil cylinder (81) is connected to an oil outlet end of the internal pressure regulating oil cylinder (73) via an oil pipe, and a pressure piston rod (82) is arranged on the central regulating oil cylinder (81) at an end corresponding to the end pressing member (622), wherein the pressure piston rod (82) presses against the outside of the rotating extrusion block (83), and a fixed extrusion block (84) is arranged between the rotating extrusion block (83) and the side pressure seat (63), wherein the fixed extrusion block (84) is sleeved on the outside of the central pull rod (623) and fixedly connected to the side pressure seat (63), and an inner support spring (85) for supporting the rotating extrusion block (83) is arranged on the inner side of the fixed extrusion block (84).

6. A road and bridge construction concrete strength detection device according to claim 5, characterized in that: The corresponding end surfaces of the rotating extrusion block (83) and the fixed extrusion block (84) are both formed with protrusions and corresponding grooves.

7. A road and bridge construction concrete strength detection device according to claim 1, characterized in that: The opening of the arc-shaped adjustment seat (72) is 95 degrees.

8. The device for detecting concrete strength for road and bridge construction according to claim 5, characterized in that: When the rotating extrusion block (83) and the fixed extrusion block (84) are in their initial positions, a gap is provided between the rotating extrusion block (83) and the fixed extrusion block (84), and when the end surface of the stabilizing seat (621) and the side pressure seat (63) are in their initial positions, a gap is provided between them.

9. A road and bridge construction concrete strength detection device according to claim 8, characterized in that: The central pull rod (623) is rotatably connected to the side pressure seat (63), and the central pull rod (623) is fixedly connected to the rotating extrusion block (83).

10. The concrete strength detection device for road and bridge construction according to claim 1, characterized in that: One side of the torsion power component (3) is fixedly connected to the fixing seat (2), and the other side of the torsion power component (3) is installed on the fixing seat (2) via a lateral adjustment component.

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