A strength testing device for special-shaped prefabricated concrete components

Abstract

The invention discloses a strength testing device for special-shaped precast concrete components, which belongs to the technical field of building material testing, and its structure comprises a suspension seat, a lifting frame, an L-shaped clamp arm and an edge strength testing rod; the suspension seat is connected to the lower side of a slide table at the bottom of a gantry, and L-shaped clamp arms are movably installed on both sides of the lifting frame; the end of the clamping head is fixedly connected to a supporting rod, and the edge strength testing rod is detachably fixedly installed on the end of the supporting rod; at least two cross-shaped strength testing rods are arranged below the suspension seat; the application can respectively perform strength testing on the edge, the upper side of the bottom and the inner side of the side wall of the special-shaped precast concrete component to verify whether there are irregular defects inside the component, and the detection range is wide and comprehensive. On this basis, the special-shaped precast concrete component is controlled to perform multi-directional large-scale oscillation in space to simulate various irregular vibrations that may be suffered in a construction environment to verify whether it meets the use requirements.

Description

Technical Field

[0001] The invention relates to the technical field of building material detection, in particular to strength detection equipment for special-shaped prefabricated concrete components. Background Art

[0002] In some large-scale municipal projects, the use of prefabricated concrete drains can effectively reduce the impact of construction on traffic and the surrounding environment. Prefabricated concrete drains are prefabricated in the factory in advance and formed by molds to ensure accurate and consistent dimensions, making the splicing and installation of drains tighter and reducing the risk of leakage. Only simple installation is required on site, greatly shortening the construction period;

[0003] In order to avoid deformation and cracking of prefabricated concrete drainage ditches during transportation and construction, it is necessary to test their compressive strength, bending strength, and impermeability to verify whether they meet the use requirements.

[0004] The existing application number is CN202411260802.6, which is a concrete strength testing device. The patent document discloses a method of using a clamp and a reciprocating power mechanism to perform mechanical high-frequency oscillation on a clamped concrete member to simulate the load conditions encountered during its actual use, thereby increasing the accuracy of strength testing. Specifically, the device includes a pressure mechanism for providing vertical pressure testing for a concrete block to be tested, a fixing mechanism for providing lateral fixation and power for the concrete block to be tested, a reciprocating power mechanism for providing high-frequency power to the fixing mechanism, and a matching mechanism for changing the state of the fixing mechanism. The reciprocating power mechanism includes a slider, and the top of the slider is fixedly connected to a main power block. The lower side of the slider is slidably connected to a support seat, the support seat is fixedly connected to the pedestal, a swing block is fixedly connected to the center position of the bottom surface of the slider, the lower end of the swing block is matched with a swing wheel, an annular groove matching the swing block is formed on the outer circumferential surface of the swing wheel, a power shaft is connected through the axial position of the swing wheel, a limiting groove matching the swing of the swing wheel is formed on the power shaft, a follower shaft is installed along the radial direction of the swing wheel on the limiting groove, the swing wheel is rotatably connected to the power shaft through the following shaft, both ends of the power shaft are rotatably connected to the slider, a power motor driving the power shaft is installed on the slider located at the rear side, an adjusting wheel is arranged on the front side of the swing wheel, a second adjusting block driving the adjusting wheel to slide is arranged on the side of the adjusting wheel, and the eccentric position of the rear end face of the adjusting wheel is connected to the eccentric position of the front end face of the swing wheel through a rocker arm;

[0005] However, when using the technical solution in the above-mentioned patent document, due to the limitations of the size of the equipment and the size of the eccentric disk of the reciprocating power mechanism, the vibration amplitude of the clamped concrete component is limited; it can only clamp concrete components with regular shapes and small sizes, and has poor detection capabilities for irregular overall special-shaped concrete, and cannot fully detect each special-shaped surface; in addition, during transportation and construction, the vibrations that the concrete components are subjected to are not in a constant horizontal direction, but in an irregular spatial direction, which will affect the detection accuracy. Therefore, the present application provides a strength detection device for special-shaped prefabricated concrete components. Summary of the invention

[0006] In order to solve the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a strength testing device for special-shaped precast concrete components, which can respectively perform strength testing on the edge, the upper side of the bottom and the inner side of the side wall of the special-shaped precast concrete components, and then verify whether there are irregular defects inside the components. The detection range is wide and comprehensive. On this basis, the special-shaped precast concrete components are controlled to oscillate in multiple directions in space with large amplitudes, simulating various irregular vibrations that may be suffered in a construction environment, such as impact forces from different directions during hoisting, installation and use, to verify whether they meet the use requirements.

[0007] The technical solution adopted by the present invention to solve the technical problem is:

[0008] Provided is a strength testing device for special-shaped prefabricated concrete components, comprising a suspension seat, a lifting frame, an L-shaped clamp arm and an edge strength testing rod; the suspension seat is connected to the lower side of the bottom slide of the gantry, the lifting frame is connected to the bottom of the suspension seat through a hydraulic cylinder, two lifting frames are provided, and L-shaped clamp arms are movably installed on both sides of the lifting frames, and the clamping heads at the ends of the L-shaped clamp arms can abut against the outer side surfaces of the sides of the concrete components; the ends of the clamping heads are fixedly connected to the supporting rod, the edge strength testing rod is detachably fixedly installed on the end of the supporting rod, the edge strength testing rod has a built-in pressure sensor I, and the outer side surface of the edge strength testing rod can abut against the end edge of the concrete component.

[0009] In the present application, an optional technical solution for the installation method of the hydraulic cylinder between the suspension seat and the lifting frame is: the fixed end and the movable end of the hydraulic cylinder are detachably fixedly installed on the suspension seat and the lifting frame respectively.

[0010] In the present application, another optional technical solution for the installation method of the hydraulic cylinder between the suspension seat and the lifting frame is: the fixed end and the movable end of the hydraulic cylinder are respectively detachably fixed with spherical inserts, the two spherical inserts are respectively rotatably connected to the suspension seat and the lifting frame, a cross arm is installed between the two lifting frames, and a reset assembly is arranged between the suspension seat and the cross arm.

[0011] Furthermore, at least two cross-shaped strength detection rods are rotatably installed on the horizontal arm below the suspension seat, the bottom of the cross-shaped strength detection rod is connected to a pressure head I through a pressure sensor II, and the side of the cross-shaped strength detection rod is connected to a pressure head II through a pressure sensor III; the pressure head I can abut against the bottom upper side surface of the concrete member, and the pressure head II can abut against the inner side surface of the side of the concrete member.

[0012] Furthermore, the cross-shaped strength detection rod is vertically slidably installed on the inner side of the I-shaped seat, and a telescopic driver III for driving the cross-shaped strength detection rod to move is installed on the top of the I-shaped seat. The I-shaped seat is engaged and rotatably connected with the cross arm, and an outer gear ring is fixedly installed on the outer side of the middle part of the I-shaped seat. A gear shaft and a rotating driver for driving the gear shaft to rotate are installed on the cross arm.

[0013] Furthermore, the L-shaped clamp arm is connected to the side of the lifting frame through telescopic drive I and telescopic drive II, the fixed ends of telescopic drive I and telescopic drive II are rotatably connected to the lifting frame, and the movable ends of telescopic drive I and telescopic drive II are rotatably connected to the shaft rod.

[0014] Furthermore, a central clamping surface is provided on the side of the clamping head, an annular protrusion is integrally formed on the middle of the supporting rod, and a virtual plane where the central clamping surface is located is tangent to the outer side surface of the annular protrusion.

[0015] Furthermore, an axial rod is detachably fixedly installed between the two supporting rods on the same side, a clamping sleeve is fixedly installed on the outer side of the middle part of the axial rod, the outer diameter of the clamping sleeve is larger than the outer diameter of the supporting rod, and the anti-slip sleeve on the outer side of the clamping sleeve can abut against the outer side surface of the side of the concrete component with an inclined structure, and springs I are respectively fixedly installed between the two ends of the clamping sleeve and the two supporting rods on the same side.

[0016] Furthermore, the side portion of the clamping head is provided with edge clamping surfaces on both sides of the central clamping surface, and the virtual plane where the edge clamping surfaces are located is tangent to the outer side surface of the clamping sleeve.

[0017] In the present application, the structural composition of the reset component, an optional technical solution is: the reset component includes a plurality of springs II, and the two ends of the spring II are respectively connected to the suspension seat and the cross arm.

[0018] In the present application, the structure of the reset component is composed of another optional technical solution: the reset component includes a through rod, the through rod passes through the insertion hole in the middle of the suspension seat and extends toward the upper side of the top of the suspension seat, the top and the middle of the through rod are respectively connected with push rings through spring III, and the two push rings are respectively detachably fixedly connected to the upper and lower sides of the suspension seat; a plurality of suspension rods are fixedly installed on the top of the suspension seat, and the suspension seat is connected to the lower side of the bottom slide of the gantry through a plurality of suspension rods.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The strength testing equipment for special-shaped prefabricated concrete components of the present invention controls two lifting frames to lift up and down periodically, forming a periodically changing height difference at the clamping heads at both ends of the concrete component. Under the action of gravity, the concrete component slides back and forth between the multiple clamping heads, and the two ends of the concrete component continuously collide with the edge strength testing rod, simulating the situation where the concrete component is hit and impacted during actual lifting and installation. In this process, the pressure sensor I is used to detect the impact strength at the edge of the concrete component.

[0021] 2. The strength testing equipment for special-shaped precast concrete components in the example of the present invention periodically adjusts the position and size of the pressure applied by multiple clamping heads to the side of the concrete component, so that the concrete component constantly swings and twists under the suspension seat, and the inner wall of the concrete component collides with the pressure head II on the side of the cross-shaped strength testing rod, simulating the situation in which the concrete component is subjected to accumulation or collision of foreign objects during actual use.

[0022] 3. The strength testing equipment for special-shaped prefabricated concrete components in the example of the present invention uses a plurality of L-shaped clamp arms for positioning and tightening, and can quickly pick up concrete components placed in the factory building without manual operation to move them up and down the equipment. The overall operation convenience is good. Since the concrete components are clamped as a whole and are not samples in local positions, various irregular vibrations that may be encountered in the construction environment are simulated, such as impact forces from different directions during hoisting, installation and use, to verify whether they meet the use requirements.

[0023] 4. In the strength testing equipment for special-shaped precast concrete components of the example of the present invention, the fixed end and the movable end of the hydraulic cylinder are respectively detachably fixedly installed with spherical inserts, and the two spherical inserts are respectively rotatably connected to the suspension seat and the lifting frame; the two hydraulic cylinders are started synchronously to make them periodically extend and retract within different moving length intervals, control the large-scale oscillation and swing of the cross arm in space, increase the oscillation freedom and oscillation amplitude of the concrete component, and combine with pressure sensor I, pressure sensor II and pressure sensor III to implement strength testing on various special-shaped surfaces on the concrete component, with a wide detection range and strong comprehensiveness.

[0024] 5. In the strength testing equipment for special-shaped precast concrete components of the example of the present invention, a shaft rod is detachably fixedly installed between two supporting rods on the same side, and a clamping sleeve is fixedly installed on the outer side of the middle part of the shaft rod; when simulating various irregular vibrations that the concrete components may suffer in the construction environment, the clamping sleeve slides on the shaft rod as the concrete components move between multiple clamping heads, thereby reducing the sliding resistance of the concrete components and enhancing the simulation effect of irregular vibrations in the construction environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0026] Figure 1 A schematic diagram of the structure of a concrete component provided by an embodiment of the present invention;

[0027] Figure 2 The overall structure of the special-shaped prefabricated concrete component strength testing equipment provided by the embodiment of the present invention is schematically shown in FIG. Figure 1 ;

[0028] Figure 3 A schematic diagram of the structure of a strength testing device for special-shaped prefabricated concrete components provided by an embodiment of the present invention;

[0029] Figure 4 Schematic diagram of the structure of the L-shaped clamp arm, clamp support head and support rod provided in an embodiment of the present invention Figure 1 ;

[0030] Figure 5 A schematic diagram of the structure of a suspension seat and a through-core rod provided in an embodiment of the present invention;

[0031] Figure 6 A schematic diagram of the structure of a cross-shaped strength detection rod and a telescopic driver III provided in an embodiment of the present invention;

[0032] Figure 7 A schematic diagram of the structure of a clamping sleeve and a spring I provided in an embodiment of the present invention;

[0033] Figure 8 Schematic diagram of the structure of the L-shaped clamp arm, clamp support head and support rod provided in an embodiment of the present invention Figure 2 ;

[0034] Fig. 9 The overall structure of the special-shaped prefabricated concrete component strength testing equipment provided by the embodiment of the present invention is schematically shown in FIG. Figure 2 .

[0035] In the figure: 1, concrete member; 11, suspension seat; 111, suspension rod; 112, socket; 12, hydraulic cylinder; 13, lifting frame; 14, cross arm; 141, telescopic drive I; 142, telescopic drive II; 15, L-shaped clamp arm; 16, clamping head; 161, center clamping surface; 162, edge clamping surface; 17, supporting rod; 171, edge strength detection rod; 172, pressure sensor I; 18, shaft rod; 181, clamping sleeve; 182, spring I; 21, I-shaped seat; 211, outer gear ring; 212, gear shaft; 22, cross-shaped strength detection rod; 23, telescopic drive III; 24, pressure head I; 241, pressure sensor II; 25, pressure head II; 251, pressure sensor III; 31, through rod; 32, spring III; 33, push ring. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0037] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0038] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings.

[0042] Embodiment 1:

[0043] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, this embodiment provides a strength detection device for special-shaped concrete prefabricated components, including a suspension seat 11, a lifting frame 13, an L-shaped clamp arm 15 and an edge strength detection rod 171; the suspension seat 11 is connected to the lower side of the bottom slide of the gantry, and the gantry uses a truss gantry or a box gantry; the lifting frame 13 is connected to the bottom of the suspension seat 11 through a hydraulic cylinder 12, and the lifting frame 13 is provided with two, and L-shaped clamp arms 15 are movably installed on both sides of the lifting frame 13, and the clamping head 16 at the end of the L-shaped clamp arm 15 can abut against the outer side surface of the side portion of the concrete component 1; the end of the clamping head 16 is fixedly connected to the supporting rod 17, and the edge strength detection rod 171 is detachably fixedly installed on the end of the supporting rod 17, and the edge strength detection rod 171 has a built-in pressure sensor I 172, and the outer side surface of the edge strength detection rod 171 can abut against the end edge of the concrete component 1.

[0044] like Figure 6 As shown, at least two cross-shaped strength detection rods 22 are arranged below the suspension seat 11, the bottom of the cross-shaped strength detection rod 22 is connected to a pressure head Ⅰ24 through a pressure sensor Ⅱ241, and the side of the cross-shaped strength detection rod 22 is connected to a pressure head Ⅱ25 through a pressure sensor Ⅲ251; the pressure head Ⅰ24 can abut against the bottom upper side surface of the concrete component 1, and the pressure head Ⅱ25 can abut against the inner side surface of the side of the concrete component 1.

[0045] like Figure 4 As shown, a central clamping surface 161 is provided on the side of the clamping head 16 , and an annular protrusion is integrally formed in the middle of the supporting rod 17 . The virtual plane where the central clamping surface 161 is located is tangent to the outer side surface of the annular protrusion on the side of the supporting rod 17 .

[0046] like Figure 2 and Figure 3As shown, the L-shaped clamp arm 15 is connected to the side of the lifting frame 13 through a telescopic driver Ⅰ141 and a telescopic driver Ⅱ142; the telescopic driver can use a hydraulic rod or a linear electric cylinder; the fixed ends of the telescopic driver Ⅰ141 and the telescopic driver Ⅱ142 are rotatably connected to the lifting frame 13, and the movable ends of the telescopic driver Ⅰ141 and the telescopic driver Ⅱ142 are rotatably connected to the shaft 18, so that Figure 2 The telescopic driver I 141 and the telescopic driver II 142 are arranged in a cross state, so that the L-shaped clamp arm 15 can hover at any position below the side of the lifting frame 13, and the degree of freedom of use is high.

[0047] In this embodiment, the fixed end and the movable end of the hydraulic cylinder 12 are detachably fixedly mounted on the suspension seat 11 and the lifting frame 13 respectively; the cross-shaped strength detection rod 22 is detachably fixedly mounted on the lower side of the suspension seat 11, and the pressure head II 25 is detachably fixedly mounted on the side of the cross-shaped strength detection rod 22 to cope with concrete components 1 with different inner wall sizes.

[0048] The specific details of the special-shaped prefabricated concrete component strength testing equipment used in this application are as follows:

[0049] 1. Clamp the concrete component 1 and perform pre-test preparation operations;

[0050] First, the telescopic driver I 141 and the telescopic driver II 142 are started to adjust the relative angle between the L-shaped clamp arm 15 and the suspension seat 11, as well as the position of the clamp head 16, so that the distance between the clamp heads 16 on the two adjacent sides is greater than the width of the concrete member 1;

[0051] Afterwards, the truss gantry or box gantry is operated so that the slide at the bottom of the gantry drives the suspension seat 11 to move horizontally to the upper side of the concrete component 1 placed in the factory building; the hydraulic cylinder 12 is started to control the multiple clamping heads 16 to move down synchronously to both sides of the concrete component 1;

[0052] Finally, restart the telescopic drive I 141 and the telescopic drive II 142 to control the distance between the two clamping heads 16 to decrease, so that the inclined surfaces on both sides of the concrete component 1 respectively abut against the central clamping surface 161 on the supporting rod 17 and the outer side surface of the annular protrusion on the side of the supporting rod 17 to clamp the concrete component 1; restart the hydraulic cylinder 12 to control the multiple clamping heads 16 to pick up and lift the concrete component 1, so that the bottom of the concrete component 1 is separated from the factory floor.

[0053] 2. Simulating various irregular vibrations that the concrete component 1 may suffer in the construction environment;

[0054] The hydraulic cylinders 12 on both sides are started to control the two lifting frames 13 to periodically lift up and down alternately, so as to form a periodically changing height difference at the clamping heads 16 at both ends of the concrete component 1. The concrete component 1 slides back and forth between the multiple clamping heads 16, and the two ends of the concrete component 1 continuously collide with the edge strength detection rod 171, simulating the concrete component 1 being hit and impacted during actual lifting and installation;

[0055] Multiple telescopic drivers I 141 and telescopic drivers II 142 are started, and the positions and magnitudes of the pressures applied by the multiple clamping heads 16 to the sides of the concrete component 1 are periodically adjusted, so that the concrete component 1 continuously swings and twists under the suspension seat 11, and the inner wall of the concrete component 1 collides with the pressure head II 25 on the side of the cross-shaped strength detection rod 22, simulating the situation in which the concrete component 1 is subjected to accumulation or collision of foreign objects during actual use.

[0056] 3. Carry out strength testing on multiple positions of the concrete component 1:

[0057] Start the hydraulic cylinders 12 on both sides and control the two lifting frames 13 to move upward synchronously. The concrete component 1 rises vertically relative to the cross-shaped strength detection rod 22. After the pressure heads Ⅰ24 and Ⅱ25 abut against the concrete component 1, continue to control the two lifting frames 13 to move upward, so that a relative force is generated between the concrete component 1 and the pressure heads Ⅰ24 and Ⅱ25. Use the pressure sensor Ⅱ241 in the pressure head Ⅰ24 to implement the compressive strength test on the upper side of the bottom of the concrete component 1; use the pressure sensor Ⅲ251 in the pressure head Ⅱ25 to implement the compressive strength test on the inner side of the side wall of the concrete component 1.

[0058] Start the hydraulic cylinder 12 on one side and control the corresponding lifting frame 13 to move upward, so that there is a height difference between the clamping heads 16 at both ends of the concrete component 1, causing the concrete component 1 to slide down. The sliding speed of the concrete component 1 is adjusted by utilizing the dead weight of the concrete component 1 and the extension and retraction speed of the hydraulic cylinder 12. When the edge of the concrete component 1 abuts against the edge strength detection rod 171, the pressure sensor I 172 is used to implement the impact strength detection at the edge of the concrete component 1.

[0059] In the above step one, multiple L-shaped clamp arms 15 are used to position and tighten, so that the concrete components 1 placed in the factory can be quickly picked up without manual operation to move them up and down the equipment. The overall operation is convenient, and the inclined surfaces on both sides of the concrete component 1 in the clamped state can respectively abut against the central clamping surface 161 on the clamping head 16 and the outer side surface of the annular protrusion on the side of the supporting rod 17, so the supporting stability is good.

[0060] In the above step 2, since the concrete component 1 is clamped as a whole and not a sample in a local position, various irregular vibrations that may be suffered in the construction environment are simulated, such as impact forces from different directions during lifting, installation and use, to verify whether it meets the use requirements.

[0061] In the above step three, the impact resistance strength test is carried out on the edge of the whole concrete component 1, the upper side of the bottom and the inner side of the side wall. The test is comprehensive, and the edge strength detection rod 171 and the cross-shaped strength detection rod 22 are used to limit the vertical and horizontal directions of the concrete component 1 to prevent the concrete component 1 from slipping, thereby ensuring the safety of equipment operation.

[0062] Embodiment 2:

[0063] The features of this embodiment that are the same as those of the first embodiment are not described in detail. The difference between this embodiment and the first embodiment is that: Figure 2 , Figure 3 and Fig. 9 As shown, in this embodiment, the fixed end and the movable end of the hydraulic cylinder 12 are respectively detachably fixedly installed with spherical inserts, the two spherical inserts are respectively rotatably connected to the suspension seat 11 and the lifting frame 13, a cross arm 14 is installed between the two lifting frames 13, and a reset assembly is arranged between the suspension seat 11 and the cross arm 14.

[0064] Among them, the reset component includes multiple springs II, and the two ends of spring II are respectively connected to the suspension seat 11 and the cross arm 14. Under the action of spring II, the suspension seat 11 is pulled in the lower middle direction, so that the cross arm 14 always has a tendency to move toward the middle side of the bottom of the suspension seat 11. Since multiple springs II are provided, the swinging cross arm 14 is corrected under the joint action of multiple springs II, so that the side of the cross arm 14 approaches to be parallel to the side of the suspension seat 11, thereby ensuring the continuous use performance of the equipment.

[0065] like Figure 2 and Fig. 9 As shown, the length of the cross arm 14 is greater than the length of the suspension seat 11, so that the spacing between the movable ends of the two hydraulic cylinders 12 is greater than the spacing between the fixed ends thereof; and the connection point of the fixed end of the hydraulic cylinder 12 on the suspension seat 11 is close to the edge of the suspension seat 11, while the connection point of the movable end of the hydraulic cylinder 12 on the lifting frame 13 corresponds to the middle position of the lifting frame 13, so that the extension direction of the hydraulic cylinder 12 and the two vertical planes on the front side and the right side of the suspension seat 11 both form an angle;

[0066] The two hydraulic cylinders 12 are started synchronously to periodically extend and retract in different moving length intervals, and the cross arm 14 is controlled to oscillate greatly in space. Since the fixed end and the movable end of the hydraulic cylinder 12 are respectively provided with spherical inserts, the spherical inserts have a high degree of rotational freedom on the suspension seat 11 and the cross arm 14, so that the cross arm 14 can drive the multiple L-shaped clamp arms 15 to swing greatly in multiple directions in space;

[0067] During this process, the concrete component 1 is partially or completely out of contact with the four clamping heads 16, and due to the influence of the inclined structure and gravity of the concrete component 1 itself, as well as the limiting effect of the edge strength detection rod 171 and the cross-shaped strength detection rod 22, the concrete component 1 periodically falls back between the four clamping heads 16. At the same time, the edge strength detection rod 171, the pressure sensors Ⅰ172, Ⅱ241 and Ⅲ251 in the pressure heads Ⅰ24 and Ⅱ25 are used to perform strength detection on different positions on the concrete component 1.

[0068] By using the above-mentioned scheme of the present embodiment, the oscillation freedom and oscillation amplitude of the concrete component 1 are increased, and by combining the pressure sensor I172, the pressure sensor II241 and the pressure sensor III251, strength detection is carried out on a large area of ​​the concrete component 1, which is comprehensive and can verify whether there are irregular defects inside the concrete component 1.

[0069] like Fig. 9 As shown, the cross-shaped strength detection rod 22 is vertically slidably installed on the inner side of the I-shaped seat 21, and a telescopic driver III 23 for driving the cross-shaped strength detection rod 22 to move is installed on the top of the I-shaped seat 21. The I-shaped seat 21 is engaged and rotatably connected with the cross arm 14, and an outer gear ring 211 is fixedly installed on the outer side of the middle part of the I-shaped seat 21. A gear shaft 212 and a rotation driver for driving the gear shaft 212 to rotate are installed on the cross arm 14;

[0070] The telescopic driver III 23 is started to control the cross-shaped strength detection rod 22 to move vertically downward, and the pressure head I 24 presses the upper side of the bottom of the concrete component 1. During this process, the pressure sensor II 241 is used to monitor the pressure. The rotation driver is started to control the rotation of the gear shaft 212. The meshing transmission between the gear shaft 212 and the outer gear ring 211 is used to drive the work seat 21, the outer gear ring 211 and the cross-shaped strength detection rod 22 to rotate synchronously. The pressure head I 24 presses the inner side of the side wall of the concrete component 1. During this process, the pressure sensor III 251 is used to monitor the pressure.

[0071] Compared with the first embodiment, for the movement control method of the cross-shaped strength detection rod 22, the above-mentioned scheme of this embodiment does not need to pre-adjust the distance between the end of the pressure head II 25 and the axis of the cross-shaped strength detection rod 22. By adjusting the rotation angle of the cross-shaped strength detection rod 22, it can adapt to different pressure detection positions on the inner slope of the concrete component 1. The operation is highly convenient and there is no need to manually adjust the detection position of the pressure head II 25.

[0072] Embodiment three:

[0073] The features common to the second embodiment of this embodiment are not described in detail. The difference between the second embodiment of this embodiment and the second embodiment is that: Figure 2 , Figure 5 and Fig. 9 As shown, in this embodiment, the reset assembly includes a through rod 31, which passes through the socket 112 in the middle of the suspension seat 11, and the diameter of the through rod 31 is one-third or one-quarter of the inner diameter of the socket 112, providing space for the swing and horizontal displacement of the through rod 31; the upper end of the through rod 31 extends toward the upper side of the top of the suspension seat 11, and the top and middle of the through rod 31 are respectively connected to push rings 33 through springs III 32, and the inner diameter of the push ring 33 corresponds to the inner diameter of the socket 112, and the two push rings 33 are respectively detachably fixedly connected to the upper and lower sides of the suspension seat 11.

[0074] Under the action of the springs III 32 on both sides of the suspension seat 11, the traction rod 31 automatically moves toward the center of the insertion hole 112, and the axis of the traction rod 31 approaches to be coaxial with the center of the inner arc of the insertion hole 112, so as to avoid the suspension seat 11 and the cross arm 14 from deviating too much and affecting the continuous use performance of the equipment;

[0075] Compared with the method of using multiple springs II in the second embodiment, the above-mentioned scheme of this embodiment is used. When the hydraulic cylinder 12 with spherical inserts at both ends is started, the jack 112 is used to limit the range of motion of the through rod 31, so that when the concrete component 1, the cross arm 14 and the multiple L-shaped clamp arms 15 swing together, the installation position of the spring III 32 and the direction of the traction force applied by the spring III 32 to the cross arm 14 are closer to the swing center of the cross arm 14, which effectively reduces the swing resistance applied by the multiple springs II to the cross arm 14, prolongs the multi-directional movement period of the concrete component 1 in space, and increases the use effect of the equipment.

[0076] In order to avoid collision between the top of the through rod 31 and the bottom slide of the gantry, Figure 2 and Fig. 9 As shown, a plurality of suspension rods 111 are fixedly installed on the top of the suspension seat 11 , and the suspension seat 11 is connected to the lower side of the bottom slide of the gantry through the plurality of suspension rods 111 , leaving a moving space for the through rod 31 .

[0077] Embodiment 4:

[0078] The features common to the second embodiment of this embodiment are not described in detail. The difference between the second embodiment of this embodiment and the second embodiment is that: Figure 3 , Figure 4 , Figure 7 , Figure 8 and Fig. 9 As shown, in this embodiment, a shaft rod 18 is detachably fixedly installed between two supporting rods 17 on the same side, a clamping sleeve 181 is fixedly installed on the outer side of the middle part of the shaft rod 18, a high-strength TPE cushion layer is arranged on the outer side of the clamping sleeve 181, and the outer side surface of the high-strength TPE cushion layer abuts against the outer side surface of the concrete component 1 with a slope structure on the side, and springs I 182 are respectively fixedly installed between the two ends of the clamping sleeve 181 and the two supporting rods 17 on the same side, and the spring I 182 is used to reset the clamping sleeve 181 on the shaft rod 18 when the contact strength between the concrete component 1 and the clamping sleeve 181 is reduced.

[0079] When using a high-strength TPE cushion, the outer diameter of the clamping sleeve 181 is 5mm-8mm larger than the outer diameter of the supporting rod 17. When a concrete component 1 is placed between the two clamping sleeves 181, the high-strength TPE cushion is compressed and deformed, and the outer diameter of the clamping sleeve 181 is 3mm-5mm larger than the outer diameter of the supporting rod 17.

[0080] Since the outer diameter of the clamping sleeve 181 is larger than the outer diameter of the supporting rod 17, when the strength test is performed on the concrete member 1 having the inclined surface structure on the side, the inclined surface structure on the side of the concrete member 1 is utilized to make the concrete member 1 Fig. 9 As shown, it can be clamped between the clamping sleeves 181 on both sides, and the outer side surface of the clamping sleeve 181 abuts against the outer inclined surface of the concrete component 1; when simulating various irregular vibrations that the concrete component 1 may suffer in the construction environment, the clamping sleeve 181 slides on the shaft 18 as the concrete component 1 moves between the multiple clamping heads 16, thereby reducing the sliding resistance of the concrete component 1 and enhancing the irregular vibration simulation effect in the construction environment.

[0081] In order to smoothly switch the concrete component 1 between the plurality of clamping and supporting heads 16 in a stable placement state and a sliding oscillation state, as shown in FIG. Figure 8As shown, edge clamping surfaces 162 are respectively provided on both sides of the central clamping surface 161 on the side of the clamping head 16, and the virtual plane where the edge clamping surface 162 is located is tangent to the outer side surface of the clamping sleeve 181; since the central clamping surface 161 is recessed in the outer side surface of the clamping sleeve 181, and the edge clamping surface 162 protrudes from the outer side surface of the annular protrusion on the side of the supporting rod 17, multiple telescopic drivers I 141 and telescopic drivers II 142 are synchronously started to control the L-shaped clamping arm 15 to rotate around the axis of the supporting rod 17, and fine-tune the relative angle between the L-shaped clamping arm 15 and the side of the concrete component 1, so that the edge clamping surface 162 is in contact with the outer inclined surface of the concrete component 1, so as to limit the movement of the concrete component 1, so that it can be stably placed between the multiple clamping heads 16, prevent the concrete component 1 from slipping, and ensure the safety of equipment operation.

[0082] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

[0083] Except for the technical features described in the specification, the remaining technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present invention, the remaining technical features will not be described here in detail.

Claims

1. A strength testing device for special-shaped prefabricated concrete components, characterized in that: It comprises a suspension seat (11) connected to the lower side of the slide at the bottom of the gantry, the bottom of the suspension seat (11) is connected to a lifting frame (13) via a hydraulic cylinder (12), two lifting frames (13) are provided, and L-shaped clamping arms (15) are movably installed on both sides of the lifting frames (13), and the clamping head (16) at the end of the L-shaped clamping arm (15) can abut against the outer side surface of the side of the concrete component (1); The end of the clamping head (16) is fixedly connected to a supporting rod (17), the end of the supporting rod (17) is detachably fixedly mounted with an edge strength detection rod (171), the edge strength detection rod (171) has a built-in pressure sensor I (172), and the outer side surface of the edge strength detection rod (171) is capable of abutting against the end edge of the concrete component (1); At least two cross-shaped strength detection rods (22) are arranged below the suspension seat (11); the bottom of the cross-shaped strength detection rod (22) is connected to a pressure head I (24) via a pressure sensor II (241); the side of the cross-shaped strength detection rod (22) is connected to a pressure head II (25) via a pressure sensor III (251); the pressure head I (24) can abut against the upper side surface of the bottom of the concrete member (1), and the pressure head II (25) can abut against the inner side surface of the side of the concrete member (1); The L-shaped clamp arm (15) is connected to the side of the lifting frame (13) through a telescopic driver I (141) and a telescopic driver II (142), the fixed ends of the telescopic driver I (141) and the telescopic driver II (142) are rotatably connected to the lifting frame (13), and the movable ends of the telescopic driver I (141) and the telescopic driver II (142) are rotatably connected to the shaft (18); The side of the clamping head (16) is provided with a central clamping surface (161), the middle of the supporting rod (17) is integrally formed with an annular protrusion, and the virtual plane where the central clamping surface (161) is located is tangent to the outer side surface of the annular protrusion; The fixed end and the movable end of the hydraulic cylinder (12) are detachably fixedly mounted on the suspension seat (11) and the lifting frame (13), respectively; The fixed end and the movable end of the hydraulic cylinder (12) are respectively detachably fixedly mounted with spherical inserts, the two spherical inserts are respectively rotatably connected to the suspension seat (11) and the lifting frame (13), a cross arm (14) is mounted between the two lifting frames (13), a cross-shaped strength detection rod (22) is mounted on the cross arm (14), and a reset assembly is provided between the suspension seat (11) and the cross arm (14); A shaft rod (18) is detachably fixedly mounted between two supporting rods (17) on the same side, a clamping sleeve (181) is fixedly mounted on the outer side of the middle portion of the shaft rod (18), the outer diameter of the clamping sleeve (181) is larger than the outer diameter of the supporting rod (17), the anti-slip sleeve on the outer side of the clamping sleeve (181) can abut against the outer side surface of the concrete component (1) having an inclined surface structure, and springs I (182) are respectively fixedly mounted between the two ends of the clamping sleeve (181) and the two supporting rods (17) on the same side.

2. The special-shaped prefabricated concrete component strength testing equipment according to claim 1 is characterized in that: The side portion of the clamping head (16) is provided with edge clamping surfaces (162) on both sides of the central clamping surface (161), and the virtual plane where the edge clamping surface (162) is located is tangent to the outer side surface of the clamping sleeve (181).

3. The special-shaped prefabricated concrete component strength testing equipment according to claim 1 is characterized in that: The cross-shaped strength detection rod (22) is vertically slidably mounted on the inner side of the work-shaped seat (21); a telescopic driver III (23) for driving the cross-shaped strength detection rod (22) to move is mounted on the top of the work-shaped seat (21); the work-shaped seat (21) is engaged and rotatably connected with the cross arm (14); an outer gear ring (211) is fixedly mounted on the outer side of the middle part of the work-shaped seat (21); and a gear shaft (212) and a rotation driver for driving the gear shaft (212) to rotate are mounted on the cross arm (14).

4. The special-shaped prefabricated concrete component strength testing equipment according to claim 1, characterized in that: The reset assembly comprises a plurality of springs II, and the two ends of the springs II are respectively connected to the suspension seat (11) and the cross arm (14).

5. The special-shaped prefabricated concrete component strength testing equipment according to claim 1, characterized in that: The reset assembly comprises a through-rod (31), the through-rod (31) passing through a plug hole (112) in the middle of the suspension seat (11) and extending toward the top upper side of the suspension seat (11), the top and middle of the through-rod (31) being connected to push rings (33) via springs III (32), respectively, and the two push rings (33) being detachably fixedly connected to the upper and lower sides of the suspension seat (11), respectively; A plurality of suspension rods (111) are fixedly mounted on the top of the suspension seat (11), and the suspension seat (11) is connected to the lower side of the bottom slide of the gantry via the plurality of suspension rods (111).

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