Creep deformation detection device and geotechnical material creep deformation detection method

Abstract

The application discloses a kind of creep deformation detection equipment and geotechnical material creep deformation detection method, it is related to creep detection equipment field.The application is extruded to soil filled in the inside of movable clamping positioning assembly by shearing mechanism, so that soil provides shearing force to geotechnical material, then by stretching detection mechanism, stretching creep detection is carried out to geotechnical material, by simulating the stress condition when geotechnical material is used, the creep performance detection precision of geotechnical material can be improved;By winding assembly, the tension of movable clamping positioning assembly and geotechnical material is adjusted to the tension of tension rope, until the tension reaches predetermined value, winding assembly stops winding to tension rope, while quick locking assembly quickly limits and locks winding assembly;By winding assembly and tension rope cooperation, the tension of geotechnical material is conveniently adjusted in real time, so that geotechnical material is always in constant tension state, and the creep performance detection precision of geotechnical material is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of creep detection equipment, and particularly relates to a creep deformation detection equipment and a geotechnical material creep deformation detection method. BACKGROUND

[0002] Geosynthetic material is widely used in highway, railway, tunnel, bridge, landfill and other projects due to its characteristics of soil consolidation and water diversion. Under constant load, geosynthetic material deforms over time and exhibits creep. Therefore, geosynthetic material should have good anti-creep performance, otherwise, under the action of long-term load, if the material produces large deformation, the structure will lose stability, which will affect its reinforcing effect in the structure, and even may cause collapse of the engineering structure. In the prior art, the creep performance of geotechnical material is detected by applying a constant tensile force to both ends of the geotechnical material. However, in the actual use process, the geotechnical material will also be subjected to shear force in the direction of soil, garbage pile and other forces, so that the creep value detection is not accurate enough. SUMMARY

[0003] In view of the problems in the related art, the present application provides a creep deformation detection equipment and a geotechnical material creep deformation detection method to overcome the above technical problems existing in the prior art.

[0004] To solve the above technical problems, the present application is realized by the following technical scheme:

[0005] The present application is a kind of creep deformation detection equipment, including detection table, the detection table is installed with positioning mechanism, shearing mechanism and tensile detection mechanism, the positioning mechanism includes fixed clamping positioning assembly and movable clamping positioning assembly, the fixed clamping positioning assembly and movable clamping positioning assembly can be clamped at both ends of the detection object respectively, and the movable clamping positioning assembly is provided with a filling cavity capable of filling soil in the inside, the shearing mechanism can extrude the filled soil to provide lateral shear force to the detection object.

[0006] The tensile detection mechanism includes a pull rope, a displacement detection assembly, a winding assembly and a quick locking assembly, one end of the pull rope is connected with the movable clamping positioning assembly, the other end of the pull rope is wound on the winding assembly, and a tension sensor is connected and installed on the pull rope, the winding assembly can wind the pull rope to provide a constant tensile force to the movable clamping positioning assembly and the detection object, the quick locking assembly can quickly limit and lock the winding assembly after the winding assembly completes winding, and the displacement detection assembly can detect the displacement of the movable clamping positioning assembly.

[0007] Further, the fixed clamping positioning assembly comprises a lower clamping base and an upper clamping base, the lower clamping base is fixedly installed on the top surface of the detection table, and the upper clamping base is fixedly installed on the top surface of the lower clamping base through bolts.

[0008] Further, the movable clamping positioning assembly comprises a rolling support base, the rolling support base is fixedly installed on the top surface of the detection table, a lower positioning box is arranged at the top end of the rolling support base, an upper positioning box is arranged at the top end of the lower positioning box, corresponding connecting seats are arranged on the two sides of the lower positioning box and the upper positioning box, the connecting seats are fixedly connected through bolts, clamping blocks are arranged on the outer side ends of the lower positioning box and the upper positioning box, and the outer side end of the lower positioning box is fixedly connected with a pull rope.

[0009] Further, the shearing mechanism comprises a sliding support and a pressing plate, the pressing plate is slidingly installed in the upper positioning box, a pressure shaft is fixedly installed on the top surface of the pressing plate, the upper end of the pressure shaft extends above the upper positioning box, a pressure detector is fixedly installed on the top end of the pressure shaft, and a pressing block is fixedly installed on the top end of the pressure detector.

[0010] The sliding support is slidingly installed on the top surface of the detection table, a threaded sleeve is fixedly installed on the sliding support, a threaded rod is threadedly and drivably installed in the threaded sleeve, and the bottom end of the threaded rod is movably inserted into the top end of the pressing block.

[0011] Further, the sliding support comprises a sliding rail, the sliding rail is arranged on the top surface of the detection table, a sliding seat is slidingly installed in the sliding rail, a support rod is fixedly installed on the sliding seat, a top frame is fixedly installed on the top end of the support rod, and the threaded sleeve is fixedly installed on the top frame.

[0012] Further, the displacement detection assembly comprises a limiting seat and a positioning rod, the limiting seat is fixedly installed on the top surface of the detection table, the positioning rod is fixedly installed on the side surface of the lower positioning box, one end of the positioning rod is movably connected with the limiting seat, and a displacement sensor for detecting the displacement of the positioning rod is also fixedly installed on the limiting seat.

[0013] Further, the winding assembly comprises a motor and a plurality of guide wheels, the motor is fixedly installed on the bottom surface of the detection table, a winding roller is drivably installed at the output end of the motor, the plurality of guide wheels are rotatably installed on one side of the detection table, and the pull rope is wound on the winding roller after being limited and guided by the guide wheels.

[0014] Further, the quick locking assembly comprises a friction positioning ring fixedly installed at one end of the winding roller, two supports respectively arranged at two sides of the friction positioning ring, a clamping base fixedly installed at the top end of each support, an ejection clamping unit installed in the clamping base, a clamping seat fixedly installed at one end of the ejection clamping unit, a bidirectional telescopic rod fixedly installed between the two supports, and telescopic ends at two ends of the bidirectional telescopic rod in transmission connection with the ejection clamping units at two sides.

[0015] Further, the ejection clamping unit comprises a telescopic rod, an ejection rod and a limiting rod, the telescopic rod is slidingly inserted at one end of the clamping base, one end of the telescopic rod extends to the outside of the clamping base and is fixedly installed with an end plate, the end plate is fixedly connected with the telescopic end of the bidirectional telescopic rod, the other end of the telescopic rod is slidingly inserted with the ejection rod, the outside end of the ejection rod is fixedly connected with the clamping seat, a limiting cone is fixedly installed on the ejection rod, and a locking spring is sleeved on one end of the ejection rod and abuts between the limiting cone and the telescopic rod.

[0016] The limiting rod is slidingly inserted into the clamping base and located at one side of the limiting cone, one end of the limiting rod is fixedly installed with a limiting bump capable of abutting and limiting the limiting cone, the other end of the limiting rod is abuttingly installed with a return spring, a guide inclined groove is formed in the limiting rod, a touch rod is fixedly installed on the end plate, one end of the touch rod is slidingly inserted into the clamping base, and the inside end of the touch rod can slidingly abut on the inside inclined surface of the guide inclined groove.

[0017] The application further discloses a geotechnical material creep deformation detection method, and specific steps are as follows:

[0018] First, one end of the geotechnical material is clamped in the fixed clamping positioning assembly, and the other end of the geotechnical material is clamped in the movable clamping positioning assembly, and the filling cavity in the movable clamping positioning assembly is filled with soil located at the top end of the geotechnical material.

[0019] Then, the filled soil is extruded through the shearing mechanism, so that the soil provides a downward shearing force to the geotechnical material, and the winding assembly can wind the pull rope, so that the pull rope provides a pulling force to the movable clamping positioning assembly and the geotechnical material, a pulling force sensor detects the pulling force of the pull rope, until the pulling force reaches a predetermined value, the winding assembly stops winding the pull rope, and the quick locking assembly quickly limits and locks the winding assembly.

[0020] When the geotechnical material is subjected to creep deformation under the action of tension and shear force, the displacement detection assembly can determine the creep deformation amount of the geotechnical material by detecting the displacement amount of the movable clamping positioning assembly, and at the same time, the tension sensor can detect that the tension of the pull rope decreases, then the quick locking assembly is unlocked to limit and lock the winding assembly, and the above winding and locking steps are repeated, so that the tension of the geotechnical material remains constant.

[0021] The tension adjustment step during the creep deformation of the geotechnical material is repeated, and the creep detection of the geotechnical material is continuously performed to detect the creep deformation amount of the geotechnical material within a certain time.

[0022] The present application has the following advantages:

[0023] 1. In the present application, the soil filled in the movable clamping positioning assembly is extruded by the shearing mechanism, so that the soil provides shear force to the geotechnical material, and then the tensile detection mechanism is used to detect the tensile creep of the geotechnical material. By simulating the stress condition of the geotechnical material in use, the creep performance detection precision of the geotechnical material can be improved.

[0024] 2. In the present application, when the tension of the geotechnical material is adjusted, the pull rope is wound by the winding assembly to adjust the tension of the movable clamping positioning assembly and the geotechnical material by the pull rope, and at the same time, the tension sensor detects the tension of the pull rope, until the tension reaches a predetermined value, the winding assembly stops winding the pull rope, and at the same time, the quick locking assembly quickly locks the winding assembly. By cooperating the winding assembly and the pull rope, the tension of the geotechnical material can be adjusted in real time, so that the geotechnical material is always in a constant tension state. The quick locking assembly can quickly lock the winding assembly when the winding assembly stops winding, so as to prevent the winding assembly from unwinding under the reverse tension of the pull rope and the geotechnical material, thereby affecting the tension of the pull rope and the geotechnical material. The tension precision of the geotechnical material can be improved, and the creep performance detection precision of the geotechnical material can be improved.

[0025] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and those skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0027] Figure 1 It is a three-dimensional structure schematic view of the creep deformation detection equipment of the present application.

[0028] Figure 2A local enlarged structure schematic view at A of the present application Figure 1 A local enlarged structure schematic view at A of the present application

[0029] Figure 3 A local enlarged structure schematic view at A of the present application

[0030] Figure 4 A local enlarged structure schematic view at A of the present application Figure 3 A local enlarged structure schematic view at A of the present application

[0031] Figure 5 A local enlarged structure schematic view at A of the present application

[0032] Figure 6 A local enlarged structure schematic view at A of the present application Figure 5 A local enlarged structure schematic view at A of the present application

[0033] Figure 7 A local enlarged structure schematic view at A of the present application

[0034] Figure 8 A local enlarged structure schematic view at A of the present application Figure 7 A local enlarged structure schematic view at A of the present application

[0035] Figure 9 A local enlarged structure schematic view at A of the present application

[0036] Figure 10 A local enlarged structure schematic view at A of the present application Figure 9 A local enlarged structure schematic view at A of the present application

[0037] In the figure: 1, detection table; 2, positioning mechanism; 21, lower positioning box; 22, upper positioning box; 23, connecting seat; 24, rolling support seat; 25, lower clamping seat; 26, upper clamping seat; 27, clamping block; 3, shearing mechanism; 31, slide rail; 32, sliding seat; 33, support rod; 34, top frame; 35, threaded sleeve; 36, threaded rod; 37, pressing block; 38, pressure detector; 39, pressure shaft; 310, pressing plate; 4, tensile detection mechanism; 41, pulling rope; 42, tension sensor; 43, limiting seat; 44, positioning rod; 45, displacement sensor; 46, guide wheel; 47, motor; 48, winding roller; 49, friction positioning ring; 410, clamping seat; 411, support; 412, bidirectional telescopic rod; 413, clamping base; 414, telescopic rod; 416, end plate; 417, locking spring; 418, limiting cone; 419, ejection rod; 420, touch rod; 421, guide chute; 422, limiting rod; 423, return spring; 424, limiting block. DETAILED DESCRIPTION

[0038] With reference to the drawings and the embodiments of the application, the technical solutions in the embodiments of the application will be clearly and completely described. Obviously, the described embodiments are only some of the embodiments of the application, but not all of the embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by those of ordinary skill in the art without creative efforts are within the scope of the application.

[0039] In the description of the application, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner" and the like indicate the orientation or positional relationship, and are only used to facilitate the description of the application and simplify the description, and do not indicate or imply that the referred components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0040] Embodiment one

[0041] Please refer to Figures 1-6 As shown in the drawings, the application is a creep deformation detection device, which comprises a detection table 1, a positioning mechanism 2, a shearing mechanism 3 and a tensile detection mechanism 4 are installed on the detection table 1, the positioning mechanism 2 comprises a fixed clamping positioning assembly and a movable clamping positioning assembly, the fixed clamping positioning assembly and the movable clamping positioning assembly can be clamped at both ends of the detection object respectively, and the movable clamping positioning assembly is internally provided with a filling cavity capable of filling soil, the shearing mechanism 3 can extrude the filled soil to provide lateral shearing force to the detection object; the tensile detection mechanism 4 comprises a pulling rope 41, a displacement detection assembly, a winding assembly and a quick locking assembly, one end of the pulling rope 41 is connected with the movable clamping positioning assembly, the other end of the pulling rope 41 is wound on the winding assembly, and a tension sensor 42 is connected and installed on the pulling rope 41, the winding assembly can wind the pulling rope 41 to provide constant tension to the movable clamping positioning assembly and the detection object, the quick locking assembly can quickly limit and lock the winding assembly after the winding assembly completes winding, and the displacement detection assembly can detect the displacement of the movable clamping positioning assembly.

[0042] When the geotechnical material is detected for creep, one end of the geotechnical material is first clamped in the fixed clamping positioning assembly, the other end of the geotechnical material is clamped in the movable clamping positioning assembly, and the soil at the top end of the geotechnical material is filled in the filling cavity inside the movable clamping positioning assembly; then the filled soil is extruded by the shearing mechanism 3, so that the soil provides downward shearing force to the geotechnical material, and the pulling rope 41 is wound by the winding assembly, so that the pulling rope 41 provides tension to the movable clamping positioning assembly and the geotechnical material, the tension sensor 42 detects the tension of the pulling rope 41, until the tension reaches a predetermined value, the winding assembly stops winding the pulling rope 41, and the quick locking assembly quickly locks the winding assembly; when the geotechnical material is deformed by creep under the action of tension and shearing force, the displacement detection assembly can determine the creep deformation of the geotechnical material by detecting the displacement of the movable clamping positioning assembly, and the tension sensor 42 can detect that the tension of the pulling rope 41 decreases, then the quick locking assembly is unlocked, and the above winding and locking steps are repeated to keep the tension of the geotechnical material constant; in this way, the geotechnical material is repeatedly detected for creep to detect the creep deformation of the geotechnical material within a certain time.

[0043] The soil is extruded to provide shearing force to the geotechnical material, thereby improving the detection accuracy of the creep performance of the geotechnical material by simulating the stress condition of the geotechnical material in use; the cooperation of the winding assembly, the pulling rope 41 and the tension sensor 42 facilitates real-time adjustment of the tension of the geotechnical material, so that the geotechnical material is always in a constant tension state; the quick locking assembly quickly locks the winding assembly when the winding assembly stops winding, prevents the winding assembly from unwinding under the reverse tension of the pulling rope 41 and the geotechnical material, thereby affecting the tension of the pulling rope 41 and the geotechnical material, improves the tension accuracy of the geotechnical material, and further improves the detection accuracy of the creep performance of the geotechnical material.

[0044] Example Two

[0045] Please refer to Figures 1-4As shown, the difference between this embodiment and the above embodiment is that the fixed clamping and positioning assembly includes a lower clamping seat 25 and an upper clamping seat 26, the lower clamping seat 25 is fixedly installed on the top surface of the detection platform 1, and the upper clamping seat 26 is fixedly installed on the top surface of the lower clamping seat 25 by bolts; the movable clamping and positioning assembly includes a rolling support seat 24, the rolling support seat 24 is fixedly installed on the top surface of the detection platform 1, the lower positioning box 21 is placed on the top of the rolling support seat 24, and the upper positioning box 22 is placed on the top of the lower positioning box 21, and corresponding connecting seats 23 are provided on both sides of the lower positioning box 21 and the upper positioning box 22, and the corresponding connecting seats 23 are fixedly connected by bolts, and the outer ends of the lower positioning box 21 and the upper positioning box 22 are provided with clamping blocks 27, and the outer end of the lower positioning box 21 is fixedly connected to the pull rope 41.

[0046] During testing, one end of the geotechnical material is clamped between the lower clamping seat 25 and the upper clamping seat 26, and the lower clamping seat 25 and the upper clamping seat 26 are locked and fixed by bolts. Then, the other end of the geotechnical material is clamped between the clamping blocks 27 at the ends of the lower positioning box 21 and the upper positioning box 22, and the upper and lower connecting seats 23 are locked and fixed by bolts, so that the lower positioning box 21 and the upper positioning box 22 are firmly connected and the geotechnical material is tightened. Then, when the pull rope 41 pulls the lower positioning box 21, the lower positioning box 21 moves forward on the rolling support seat 24, and cooperates with the upper positioning box 22 to gradually tighten the geotechnical material to provide tension to the geotechnical material.

[0047] Example 3

[0048] See also Figure 1 、 Figure 2 、 Figure 7 、 Figure 8 As shown, the difference between this embodiment and the above embodiment is that the shearing mechanism 3 includes a sliding bracket and a pressure plate 310, the pressure plate 310 is slidably installed in the interior of the upper positioning box 22, and a pressure shaft 39 is fixedly installed on the top surface of the pressure plate 310, the upper end of the pressure shaft 39 extends above the upper positioning box 22, and a pressure detector 38 is fixedly installed on the top of the pressure shaft 39, and a pressure block 37 is fixedly installed on the top of the pressure detector 38; the sliding bracket is slidably installed on the top surface of the detection platform 1, and a threaded sleeve 35 is fixedly installed on the sliding bracket, and a threaded rod 36 is installed on the internal thread transmission of the threaded sleeve 35, and the bottom end of the threaded rod 36 is movably inserted into the top of the pressure block 37; the sliding bracket includes a slide rail 31, the slide rail 31 is arranged on the top surface of the detection platform 1, a sliding seat 32 is slidably installed in the slide rail 31, a support rod 33 is fixedly installed on the sliding seat 32, a top frame 34 is fixedly installed on the top of the support rod 33, and the threaded sleeve 35 is fixedly installed on the top frame 34.

[0049] The inner part of the upper positioning box 22 is filled with soil between the soil material and the pressing plate 310, the top end of the threaded rod 36 is provided with an internal hexagonal hole, and during detection, the threaded rod 36 is rotated by the cooperation of a wrench and the internal hexagonal hole, so that the threaded rod 36 gradually descends, and the pressing block 37, the pressure detector 38, the pressure shaft 39 and the pressing plate 310 are pressed downward. At this time, the pressing plate 310 presses the soil in the upper positioning box 22 downward, so that the soil provides a shearing force to the soil material, and the pressure detector 38 detects the size of the shearing force, thereby facilitating the regulation of the shearing force of the soil material. When the soil material deforms during the detection process, the lower positioning box 21 and the upper positioning box 22 move under the pulling of the pull rope 41, the threaded rod 36, the pressing block 37, the pressure detector 38, the pressure shaft 39 and the pressing plate 310 move synchronously with the upper positioning box 22, and the threaded rod 36 drives the sliding support to slide synchronously along the detection table 1, so that the sliding support remains limited support to the threaded rod 36, thereby ensuring that the soil material is always subjected to stable shearing force during the detection process, thereby improving the creep detection precision of the creep material.

[0050] Embodiment Four

[0051] As shown in Figures 3-6 The difference between the present embodiment and the above-mentioned embodiments is that the displacement detection assembly includes a limiting seat 43 and a positioning rod 44, the limiting seat 43 is fixedly installed on the top surface of the detection table 1, the positioning rod 44 is fixedly installed on the side surface of the lower positioning box 21, one end of the positioning rod 44 is movably connected with the limiting seat 43, and a displacement sensor 45 for detecting the displacement of the positioning rod 44 is further fixedly installed on the limiting seat 43; the winding assembly includes a motor 47 and a plurality of guide wheels 46, the motor 47 is fixedly installed on the bottom surface of the detection table 1, a winding roller 48 is drivingly installed on the output end of the motor 47, and the plurality of guide wheels 46 are all rotatably installed on one side of the detection table 1. After being limited and guided by the guide wheels 46, the pull rope 41 is wound on the winding roller 48.

[0052] When it is necessary to pull the soil material for detection, the winding roller 48 is driven to rotate by the motor 47 to wind the pull rope 41, so that the lower positioning box 21 and the soil material are pulled by the pull rope 41, and the motor 47 is a stepping motor which can rotate at a small angle to drive the winding roller 48 to rotate at a small angle to pull and wind the pull rope 41, so as to realize the accurate adjustment of the pulling force of the pull rope 41. When the soil material is elongated by creep under the action of the pulling force, the lower positioning box 21 moves forward under the action of the pulling force of the pull rope 41, at this time, the lower positioning box 21 drives the positioning rod 44 to move synchronously, and the displacement of the positioning rod 44 is detected by the displacement sensor 45, so as to measure the elongation of the soil material by creep. The cooperation of the positioning rod 44 and the displacement sensor 45 makes the creep detection of the soil material more convenient, and the positioning rod 44 can cooperate with the limiting seat 43 to limit the lower positioning box 21, so that the lower positioning box 21 is more stable in installation on the rolling support seat 24.

[0053] Example Five

[0054] Please refer to Figure 5 、 Figure 6 、 Figure 9 、 Figure 10 The difference between this embodiment and the above-mentioned embodiments is that the quick locking assembly includes a friction positioning ring 49 fixedly installed at one end of the winding roller 48 and two supports 411 respectively arranged at both sides of the friction positioning ring 49. The top end of each support 411 is fixedly installed with a clamping base 413, and the clamping base 413 is internally installed with a shooting clamping unit. One end of the shooting clamping unit is fixedly installed with a clamping seat 410. A bidirectional telescopic rod 412 is fixedly installed between the two supports 411, and the telescopic ends at both ends of the bidirectional telescopic rod 412 are respectively in transmission connection with the shooting clamping units at both sides. The shooting clamping units can drive the clamping seat 410 to move in the direction of the friction positioning ring 49 under the transmission of the bidirectional telescopic rod 412, so as to clamp and lock the friction positioning ring 49 by the two clamping seats 410.

[0055] When the winding roller 48 rotates to complete the tension adjustment of the pull rope 41, the bidirectional telescopic rod 412 drives the telescopic ends at both ends to contract, thereby triggering the shooting clamping units, and synchronously driving the clamping seat 410 to move in the direction of the friction positioning ring 49 by the shooting clamping units at both sides, so as to clamp and lock the friction positioning ring 49 by the clamping seats 410 at both sides. In this way, the quick locking and fixing of the winding roller 48 are realized, so as to prevent the winding roller 48 from rotating in the opposite direction under the reverse tension of the geotechnical material and the pull rope 41, and to reduce the tension of the pull rope 41, which is beneficial to improve the accuracy of the tension of the pull rope 41, and further improve the creep detection accuracy of the geotechnical material.

[0056] Further, the ejection clamping unit comprises a telescopic rod 414, an ejection rod 419 and a limiting rod 422, the telescopic rod 414 is slidingly inserted into one end of the clamping base 413, one end of the telescopic rod 414 extends to the outside of the clamping base 413 and is fixedly installed with an end plate 416, the end plate 416 is fixedly connected with the telescopic end of the bidirectional telescopic rod 412, the other end of the telescopic rod 414 is slidingly inserted with the ejection rod 419, the outer end of the ejection rod 419 is fixedly connected with the clamping seat 410, the ejection rod 419 is fixedly installed with a limiting conical table 418, one end of the ejection rod 419 is sleeved with a locking spring 417 abutting between the limiting conical table 418 and the telescopic rod 414; the limiting rod 422 is slidingly inserted into the inside of the clamping base 413 and located at one side of the limiting conical table 418, one end of the limiting rod 422 is fixedly installed with a limiting protrusion 424 capable of abutting limiting the limiting conical table 418, the other end of the limiting rod 422 is abuttingly installed with a return spring 423, the limiting rod 422 is provided with a guide inclined groove 421, the end plate 416 is fixedly installed with a touch rod 420, one end of the touch rod 420 is slidingly inserted into the inside of the clamping base 413, and the inner end of the touch rod 420 can slidingly abut on the inner inclined surface of the guide inclined groove 421.

[0057] When the winding roller 48 rotates to adjust the tension of the pull rope 41, the bidirectional telescopic rod 412 is contracted, driving the end plate 416, the telescopic rod 414 and the touch rod 420 to move towards the clamping base 413, at this time, the telescopic rod 414 abuts and contracts the locking spring 417, so that the locking spring 417 is in a force storage state, then the bidirectional telescopic rod 412 stops contracting, and when it is needed to lock the winding roller 48, the bidirectional telescopic rod 412 continues to contract, driving the end plate 416, the telescopic rod 414 and the touch rod 420 to continue to move towards the clamping base 413, at this time, the inner end of the touch rod 420 slidingly abuts on the inclined surface of the guide inclined groove 421, moving the limiting rod 422 downward, so that the limiting rod 422 drives the limiting protrusion 424 to move downward to release the abutting limiting of the limiting conical table 418, then the limiting conical table 418, the ejection rod 419 and the clamping seat 410 are ejected and moved towards the friction positioning ring 49 under the elastic force of the locking spring 417, so that the clamping seat 410 quickly clamps and fixes the friction positioning ring 49, realizing the quick locking and fixing of the winding roller 48;

[0058] The telescopic rod 414 is internally provided with a telescopic slot, and a telescopic block connected with the end of the ejecting rod 419 is slidingly installed in the telescopic slot. When it is necessary to adjust the winding of the pull rope 41 again, the bidirectional telescopic rod 412 is elongated to drive the end plate 416, the telescopic rod 414 and the touch rod 420 to move to the direction away from the clamping base 413 and reset, so that the telescopic rod 414 gradually releases the abutment of the locking spring 417, and then, with the continuous outward movement of the telescopic rod 414, the telescopic rod 414 drives the limiting cone 418, the ejecting rod 419 and the clamping base 410 to move outward and reset, so as to release the locking of the winding roller 48, and the limiting cone 418 can move downward by the left conical surface to abut against the limiting block 424 and the limiting rod 422, so that the limiting cone 418 can be reset to the left side of the limiting block 424, and the limiting block 424 can continue to limit the limiting cone 418 subsequently, thereby facilitating the subsequent ejection locking of the next round.

[0059] Embodiment six

[0060] The embodiment discloses a geotechnical material creep deformation detection method, and the specific steps are as follows:

[0061] First, one end of the geotechnical material is clamped in the fixed clamping positioning assembly, and the other end of the geotechnical material is clamped in the movable clamping positioning assembly, and the filling cavity inside the movable clamping positioning assembly is filled with soil located at the top end of the geotechnical material;

[0062] Then, the filled soil is extruded by the shearing mechanism 3, so that the soil provides a downward shearing force to the geotechnical material, and the winding assembly can wind the pull rope 41, so that the pull rope 41 provides a pulling force to the movable clamping positioning assembly and the geotechnical material, the pulling force sensor 42 detects the pulling force of the pull rope 41, until the pulling force reaches a predetermined value, the winding assembly stops winding the pull rope 41, and the quick locking assembly quickly locks the winding assembly;

[0063] When the geotechnical material is subjected to the creep deformation under the action of the pulling force and the shearing force, the displacement detection assembly can determine the creep deformation amount of the geotechnical material by detecting the displacement amount of the movable clamping positioning assembly, and the pulling force sensor 42 can detect that the pulling force of the pull rope 41 decreases, then the quick locking assembly is unlocked, and the winding and locking steps are repeated, so that the pulling force of the geotechnical material remains constant.

[0064] The pulling force adjustment steps during the creep deformation of the geotechnical material are repeated, and the creep deformation of the geotechnical material is continuously detected to detect the creep deformation amount of the geotechnical material within a certain time.

[0065] In the description of the specification, reference to "one embodiment", "an example", "a specific example" or the like means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. The appearances of the phrases "in one embodiment", "an example", "a specific example" or the like in various places in the specification are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0066] The preferred embodiments of the application disclosed above are only to help explain the application. The preferred embodiments do not describe all the details of the application and limit the application to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of the specification. The specification selects and describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and use the application.

Claims

1. A creep deformation detection apparatus comprising a detection stage, characterised in that: The detection table is provided with a positioning mechanism, a shearing mechanism and a tensile detection mechanism. The tensile detection mechanism comprises a pulling rope, a displacement detection assembly, a winding assembly and a quick locking assembly. The winding assembly comprises a motor, and a winding roller is transmissionally installed at an output end of the motor. The quick locking assembly comprises a friction positioning ring and two supports. The friction positioning ring is fixedly installed at one end of the winding roller.

2. A creep deformation detection apparatus according to claim 1, characterized in that: The two supports are arranged at two sides of the friction positioning ring. The quick locking assembly further comprises a clamping base, a spring shooting clamping unit and a limiting rod. The clamping base is fixedly installed at a top end of the support. The spring shooting clamping unit is fixedly installed at one end of the clamping base. The limiting rod is slidably inserted into the clamping base and located at one side of the limiting cone. The limiting rod is provided with a limiting protrusion at one end thereof. The limiting protrusion is capable of abutting and limiting the limiting cone. The other end of the limiting rod is abuttingly installed with a return spring. The limiting rod is provided with a guide inclined slot. The end plate is fixedly installed with a touch rod. One end of the touch rod is slidably inserted into the clamping base. The inner side end of the touch rod is capable of slidingly abutting on the inner side inclined surface of the guide inclined slot. The fixed clamping and positioning assembly comprises a lower clamping seat and an upper clamping seat. The lower clamping seat is fixedly installed on the top surface of the detection table. The upper clamping seat is fixedly installed on the top surface of the lower clamping seat by means of bolts.

3. The creep deformation detection apparatus of claim 1, wherein: The movable clamping positioning assembly comprises a rolling support seat fixedly installed on the top surface of the detection table, a lower positioning box placed on the top end of the rolling support seat, an upper positioning box placed on the top end of the lower positioning box, and corresponding connecting seats arranged on the two sides of the lower positioning box and the upper positioning box and fixedly connected through bolts.

4. A creep deformation detection apparatus according to claim 3, wherein: The shearing mechanism comprises a sliding support and a pressing plate, the pressing plate is slidingly installed in the inner part of the upper positioning box, a pressure shaft is fixedly installed on the top surface of the pressing plate, the upper end of the pressure shaft extends above the upper positioning box, a pressure detector is fixedly installed on the top end of the pressure shaft, and a pressing block is fixedly installed on the top end of the pressure detector. The sliding support is slidingly installed on the top surface of the detection table, a threaded sleeve is fixedly installed on the sliding support, a threaded rod is threadedly and drivably installed in the inner part of the threaded sleeve, and the bottom end of the threaded rod is movably inserted into the top end of the pressing block.

5. A creep deformation detection apparatus according to claim 4, wherein: The sliding support comprises a sliding rail arranged on the top surface of the detection table, a sliding seat slidingly installed in the sliding rail, a supporting rod fixedly installed on the sliding seat, a top frame fixedly installed on the top end of the supporting rod, and the threaded sleeve fixedly installed on the top frame.

6. A creep deformation detection apparatus according to claim 3, wherein: The displacement detection assembly comprises a limiting seat fixedly installed on the top surface of the detection table and a positioning rod fixedly installed on the side surface of the lower positioning box, one end of the positioning rod is movably inserted into the limiting seat, and a displacement sensor for detecting the displacement of the positioning rod is also fixedly installed on the limiting seat.

7. The creep deformation detection apparatus of claim 1, wherein: The winding assembly comprises a plurality of guide wheels, the motor is fixedly installed on the bottom surface of the detection table, the plurality of guide wheels are rotatably installed on one side of the detection table, and the pulling rope is wound on the winding roller after being guided and limited by the guide wheels.

8. A method for detecting creep deformation of a geotechnical material using the creep deformation detection apparatus according to any one of claims 1 to 7, characterized by, The specific steps are as follows: First, one end of the geotechnical material is clamped in the fixed clamping positioning assembly, the other end of the geotechnical material is clamped in the movable clamping positioning assembly, and the soil at the top end of the geotechnical material is filled in the filling cavity in the movable clamping positioning assembly; Then, the filled soil is extruded by the shearing mechanism, the soil provides downward shearing force to the geotechnical material, the pulling rope is wound by the winding assembly, the pulling rope provides pulling force to the movable clamping positioning assembly and the geotechnical material, the pulling force sensor detects the size of the pulling force of the pulling rope, until the pulling force reaches the predetermined value, the winding assembly stops winding the pulling rope, and the quick locking assembly quickly limits and locks the winding assembly; When the geotechnical material is deformed by creep under the action of the pulling force and the shearing force, the displacement detection assembly can determine the creep deformation amount of the geotechnical material by detecting the displacement amount of the movable clamping positioning assembly, and the pulling force sensor can detect that the pulling force on the pulling rope decreases, then the limiting and locking of the quick locking assembly on the winding assembly is released, and the above winding and locking steps are repeated to keep the pulling force on the geotechnical material constant; The pulling force adjustment steps when the geotechnical material is deformed by creep are repeated, and the geotechnical material is continuously detected by creep to detect the creep deformation amount of the geotechnical material within a certain time.

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