A dynamic water grouting simulation experimental device for bottom karst aquifer

Abstract

The present invention provides a dynamic water grouting simulation experimental device for bottom plate karst aquifer, belonging to the technical field of grouting simulation. It includes a main body and two side plates, the two side plates are fixedly connected to the inner wall of the main body, the top of the main body is fixedly connected to two extension frames, and also includes a lifting mechanism, the lifting mechanism is arranged inside the main body, and the lifting mechanism is used to lift the simulated material inside the main body. The present invention allows the simulated material on the extension placement rack to rotate together with the extension placement rack, so that the material lifted to the top of the main body can be moved to a place close to the bottom, so that the simulated material can be completely moved out of the experimental device. This method replaces the method of punching holes on the simulated material to install the bracket for transportation and removal, and there is no need to punch holes on the simulated material to install the bracket, thereby avoiding the phenomenon of damaging the material and causing fracture to destroy the integrity of the simulated material, thereby avoiding affecting the observation of the simulated material after the experiment.

Description

Technical Field

[0001] The invention relates to the technical field of grouting simulation experiments, and in particular to a dynamic water grouting simulation experiment device for a bottom plate karst aquifer. Background Art

[0002] As infrastructure construction continues to move toward karst areas, such as tunnels and bridges, karst aquifers are increasingly encountered. Karst grouting under dynamic water conditions is one of the key technologies to solve the stability problems of these engineering foundations, and the simulation experimental device can provide a scientific basis for engineering practice and ensure the safety and stability of the project. When studying the long-term performance of grouting materials in simulated karst aquifers, such as the solidification characteristics of the slurry, long-term strength development, and interaction with the surrounding simulated rock and soil layers, it is necessary to remove the experimental materials completely after grouting.

[0003] Generally, a liftable base is provided on the inner wall at the bottom of the experimental device. Before the experiment, the liftable base is lowered to the bottom of the experimental device, and then the experimental simulated materials are filled into the interior of the experimental device. After the experiment, the simulated materials after the experiment are directly pushed to the top of the experimental device through the liftable bottom plate, and then the simulated materials after the experiment are manually moved away from the experimental device. However, the simulated materials generally do not have a fulcrum that can be moved manually, so it is necessary to drill holes on the simulated materials to install and transport brackets, which will not only easily cause the simulated materials to be damaged and fractured, thereby destroying the integrity of the simulated materials, but also affect the observation of the simulated materials after the experiment. Therefore, the present application provides a bottom plate karst aquifer dynamic water grouting simulation experimental device to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a bottom plate karst aquifer dynamic water grouting simulation experimental device to solve the existing phenomenon that the simulated material is easily damaged and fractured, thereby destroying the integrity of the simulated material and affecting the observation of the simulated material after the experiment.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A floor karst aquifer dynamic water grouting simulation experiment device comprises a main body and two side plates, the two side plates are fixedly connected to the inner wall of the main body, the top of the main body is fixedly connected to two extension frames, and also comprises: a lifting mechanism, the lifting mechanism is arranged inside the main body, the lifting mechanism is used to lift the simulated material inside the main body; a transmission mechanism, the transmission mechanism is arranged at the bottom of the main body, the transmission mechanism is used to drive the lifting mechanism to operate; an extension mechanism, the extension mechanism is arranged at the bottom of one of the extension frames, the extension mechanism comprises two L-shaped rotating connecting frames, the two L-shaped rotating connecting frames are fixedly connected to the bottom of one of the extension frames, the outer walls of the two L-shaped rotating connecting frames are rotatably connected with the extension placement frames, when the transmission mechanism controls the lifting mechanism to lift the simulated material inside the main body, the transmission mechanism will synchronously control the extension placement frame to rotate on the two L-shaped rotating connecting frames, so that the extension placement frame is spliced ​​with the extension frame, after the simulated material is manually pushed onto the extension placement frame, during the resetting process of the extension placement frame, the simulated material on the extension placement frame is affected by gravity and slides downward to the area below the main body.

[0007] Optionally, a through hole is opened through the bottom of the main body, the two side panels are symmetrically distributed, and one of the side panels is provided with two water pipe interfaces, and the outer walls of the two side panels are provided with two fitting grooves, each fitting groove is distributed at the connection between the side panel and the inner wall of the main body, and two sets of support columns are fixedly connected to the bottom of the main body.

[0008] Optionally, a cross bar is fixedly connected between each group of support columns, two strip holes are penetrated through the outer walls of the two cross bars, a slide frame is fixedly connected between the two cross bars, the two strip holes are symmetrically distributed with the slide frame as the center, and two lifting slide holes are provided on the inner walls on both sides opposite to each other, and each lifting slide hole is distributed corresponding to each support column.

[0009] Optionally, the lifting mechanism also includes a lifting plate, which is slidably connected to the inner wall of the main body, and two U-shaped frames are fixedly connected on opposite sides of the lifting plate, each U-shaped frame is engaged with each engaging groove, and the end of the U-shaped frame away from the lifting plate is fixedly connected to a sliding connecting frame, the sliding connecting frame is slidably connected to the inside of the lifting slide hole, and the outer wall of the sliding connecting frame is rotatably connected to a double-headed connecting strip, and every two double-headed connecting strips are symmetrically distributed with the slide slot frame as the center.

[0010] Optionally, the transmission mechanism also includes a motor, the motor is fixedly connected between each group of support columns, the output end of the motor is fixedly connected to a bidirectional screw rod, the outer wall of the bidirectional screw rod is fixedly connected to a gear corresponding to the slide slot frame, the outer wall of the bidirectional screw rod is threadedly connected to two movable push strips, the two movable push strips are symmetrically distributed with the gear as the center, and the movable push strips are slidingly connected to the inside of the bar hole, and the end of the double-head connecting strip away from the sliding connecting frame is rotatably connected to the movable push strip.

[0011] Optionally, the extension mechanism also includes a thickening strip, which is fixedly connected to the side of the extension placement rack close to the main body, a rack is slidably connected inside the slide frame, the top of the rack is meshed with the gear, and a roller push column is fixedly connected to the side of the rack close to the extension placement rack, a roller is arranged on the top of the roller push column, and the roller on the top of the roller push column is against the thickening strip.

[0012] Optionally, two L-shaped pulley frames are fixedly connected to the side of the extension placement rack away from the thickening strip, rollers are provided on the bottom inner walls of the two L-shaped pulley frames, side slide grooves are provided on the sides of the two L-shaped pulley frames close to each other, a movable hole is penetrated through the side of the L-shaped pulley frame away from the extension placement rack, an extension connector is fixedly connected to the side of the L-shaped pulley frame away from the extension placement rack, the extension connector is distributed below the movable hole, and a buffer slide groove is provided on the side of the extension placement rack away from the thickening strip.

[0013] Optionally, a buffer mechanism is provided inside the buffer slide groove, and the buffer mechanism also includes a sliding block, which is slidably connected inside the buffer slide groove, a buffer spring is fixedly connected between the sliding block and the top of the buffer slide groove, a push rack is fixedly connected to the outer wall of the sliding block, and movable push strips are rotatably connected to the opposite sides of the push rack, and the end of the movable push strip away from the push rack is slidably connected to the inside of the side slide groove, and the movable push strip is rotatably connected to the inside of the side slide groove.

[0014] Optionally, both side slide grooves are slidably connected with a stop block, and the end of the outer wall of the stop block away from the movable push bar is fixedly connected to a push rod frame, and the push rod frame is distributed on the side of the L-shaped pulley frame away from the extended placement frame, and the outer wall of the extended connecting head is rotatably connected to a push plate frame, and the push plate frame is against the outer wall of the push rod frame.

[0015] Optionally, an end of the outer wall of the push plate frame away from the push rod frame is fixedly connected to a rotating pressure rod frame, an extrusion friction block is slidably connected inside the movable hole, a telescopic block is slidably connected to the side of the extrusion friction block away from the extension placement frame, a sliding hole block is fixedly connected to the side of the telescopic block away from the extrusion friction block, an inner spring is fixedly connected between the inner wall of the telescopic block and the inner wall of the extrusion friction block, an outer spring is fixedly connected between the sliding hole block and the side of the L-shaped pulley frame away from the extension placement frame, and the sliding hole block is movably connected to one end of the rotating pressure rod frame away from the push plate frame.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] The two-way screw rod is driven by a motor to rotate, and the two moving push strips symmetrically arranged on the two-way screw rod are driven to move away from each other inside the bar hole. The sliding connection frame can be driven to rise inside the lifting slide hole through the double-headed connecting strip, and then the lifting plate can be driven to rise inside the main body through the U-shaped frame leaving the fitting groove, thereby pushing out the simulated material after the experiment inside the main body, so that the top of the lifting plate coincides with the top of the main body, and when the two-way screw rod rotates and the lifting plate is driven to rise through the double-headed connecting strip, the gear will be driven to rotate synchronously, and the rack will be driven to slide on the slide slot frame synchronously, so that the roller on the roller push column will be against the thickening strip, which will push the extension placement frame as a whole to rotate on the two L-shaped rotating connection frames, so that the extension placement frame will gradually align with the extension frame on the top of the L-shaped rotating connection frame. By overlapping, the simulated material on the lifting plate can be pushed to the top of the L-shaped rotating connecting frame after being lifted, so that the simulated material contacts the pushing frame. When the lifting plate is lowered and reset, the extension placement frame is synchronously driven to rotate slowly on the two L-shaped rotating connecting frames, and slowly reset, so that the simulated material on the extension placement frame rotates together with the extension placement frame, so that the material lifted to the top of the main body can be moved to a place near the bottom, so that the simulated material can be completely moved out of the experimental device. This method replaces the method of punching holes on the simulated material to install the bracket for transportation and removal. There is no need to punch holes on the simulated material to install the bracket, thereby avoiding the phenomenon of damaging the material and breaking it, thereby destroying the integrity of the simulated material, and avoiding affecting the observation of the simulated material after the experiment.

[0018] The simulated material is pushed onto the outer placement rack and contacts the push rack by overlapping the extension rack on the two L-shaped rotating connecting racks with the extension rack. As the outer placement rack is reset and drives the material on the outer placement rack to tilt along with the outer placement rack, the material on the outer placement rack will slide down accordingly. When the simulated material slides down, the push rack will be pushed down synchronously, so that the push rack can slide inside the buffer slide groove through the sliding block and stretch the buffer spring, thereby reducing the speed at which the simulated material slides down on the outer placement rack, thereby reducing the occurrence of the phenomenon that the simulated material slides down too fast and causes the material to quickly hit the inside of the two L-shaped pulley racks, thereby reducing the damage to the L-shaped pulley rack and the simulated material itself when the simulated material slides on the outer placement rack. After the simulated material slides into the inside of the two L-shaped pulley racks, the side of the simulated material will contact the rollers on the two L-shaped pulley racks, thereby directly pushing the simulated material to make the material leave the two L-shaped pulley racks, thereby improving the convenience of moving the simulated material out of the simulation experimental device.

[0019] When the simulated material on the extension rack follows the extension rack to slide downward and push the push rack to slide synchronously, the two ends of the movable push bar will rotate on the push rack and in the side slide groove respectively, thereby synchronously driving the movable push bar on the push rack to slide in the side slide groove toward the end away from the extension rack. When the push rack follows the simulated material to slide a certain distance, the connection between the movable push bar and the side slide groove will abut against the abutment block in the side slide groove, pushing the abutment block to slide in the side slide groove, and then the push rod frame will abut against the push plate frame, and the thrust will be transmitted to the push plate frame, so that the push plate frame rotates with the extension connector as the axis, and the connection between the rotating pressure rod frame and the movable hole on the sliding hole block is driven to apply a pressing force to the sliding hole block, so that the extrusion The friction block passes through the movable hole and presses against the surface of the material. At the same time, the pressing of the sliding block by rotating the pressure rod frame will cause the telescopic block to shrink into the extrusion friction block and compress the inner spring, so that the elastic force of the inner spring is converted into the extrusion force of the extrusion friction block on the simulated material. At the same time, the sliding block will compress the outer spring to facilitate the reset of the push frame and the extrusion friction block after the sliding block loses the pressing force. The simulated material is squeezed by the extrusion friction block. When the simulated material slides up and down the extension placement frame and there is still a distance between it and the roller inside the L-shaped pulley frame, the speed of the simulated material sliding down is further slowed down, thereby reducing the speed of the simulated material sliding down, and reducing the force on the material itself hitting the L-shaped pulley frame due to the simulated material sliding down too fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a dynamic water grouting simulation experimental device for a bottom plate karst aquifer;

[0022] Figure 2 It is a bottom view of a dynamic water grouting simulation experimental device for bottom plate karst aquifer;

[0023] Figure 3 It is a schematic diagram of the main structure of a dynamic water grouting simulation experimental device for bottom plate karst aquifer;

[0024] Figure 4 is a schematic diagram of the transmission mechanism;

[0025] Figure 5 Schematic diagram of the active hole structure;

[0026] Figure 6 It is a schematic diagram of the structure of the extension mechanism;

[0027] Figure 7 It is a schematic diagram of the structure of the buffer mechanism of the present invention;

[0028] Figure 8 for Figure 5 Enlarged view of point A in the middle.

[0029] Reference numerals:

[0030] 1. Main body; 101. Through hole; 102. Side plate; 103. Fitting groove; 104. Support column; 105. Crossbar; 106. Strip hole; 107. Extension frame; 108. Slide frame; 109. Lifting slide hole; 2. Lifting mechanism; 201. Lifting plate; 202. U-shaped frame; 203. Sliding connecting frame; 204. Double-head connecting strip; 3. Transmission mechanism; 301. Motor; 302. Bidirectional screw rod; 303. Gear; 304. Moving push strip; 4. Extension mechanism; 401. Extension placement frame; 402. Thickening strip; 403 , rack; 404, roller push column; 405, L-shaped pulley frame; 406, side slide groove; 407, movable hole; 408, extension connector; 409, buffer slide groove; 410, L-shaped rotating connecting frame; 5, buffer mechanism; 501, sliding block; 502, buffer spring; 503, push frame; 504, movable push strip; 505, resisting block; 506, push rod frame; 507, rotating pressure rod frame; 508, push plate frame; 509, sliding hole block; 510, telescopic block; 511, extrusion friction block; 512, inner spring; 513, outer spring.

[0031] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0032] The following is a detailed description of a floor karst aquifer dynamic water grouting simulation experimental device provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0033] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0034] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0035] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0036] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0037] like Figure 1-Figure 4 As shown, the present invention is a bottom plate karst aquifer dynamic water grouting simulation experimental device, comprising a main body 1 and two side plates 102, the two side plates 102 are fixedly connected to the inner wall of the main body 1, the top of the main body 1 is fixedly connected to two extension frames 107, the bottom of the main body 1 is penetrated by a through hole 101, the two side plates 102 are symmetrically distributed, and one of the side plates 102 is provided with two water pipe interfaces, and the outer walls of the two side plates 102 are provided with two embedding grooves 103, each embedding groove 103 is distributed on the side plate 102 At the connection with the inner wall of the main body 1, two groups of support columns 104 are fixedly connected at the bottom of the main body 1, and a cross bar 105 is fixedly connected between each group of support columns 104. Two strip holes 106 are penetrated through the outer walls of the two cross bars 105, and a slide frame 108 is fixedly connected between the two cross bars 105. The two strip holes 106 are symmetrically distributed with the slide frame 108 as the center. Two lifting sliding holes 109 are provided on the inner walls on both sides of the opposite sides of the main body 1, and each lifting sliding hole 109 is distributed corresponding to each support column 104;

[0038] like Figure 1, Figure 2 , Figure 4 and Figure 5 As shown, it includes a lifting mechanism 2, which is arranged inside the main body 1. The lifting mechanism 2 is used to lift the simulated material inside the main body 1. The lifting mechanism 2 also includes a lifting plate 201, which is slidably connected to the inner wall of the main body 1. Two U-shaped frames 202 are fixedly connected on opposite sides of the lifting plate 201. Each U-shaped frame 202 is embedded in each embedding groove 103. The end of the U-shaped frame 202 away from the lifting plate 201 is fixedly connected with a sliding connection frame 203. The sliding connection frame 203 is slidably connected to the inside of the lifting slide hole 109. The outer wall of the movable connecting frame 203 is rotatably connected with a double-headed connecting strip 204, and every two double-headed connecting strips 204 are symmetrically distributed with the slide slot frame 108 as the center, and the movable push strip 304 gradually approaches the sliding connecting frame 203, so that the sliding connecting frame 203 can be driven to rise inside the lifting slide hole 109 through the double-headed connecting strip 204, and then the lifting plate 201 can be driven to rise inside the main body 1 through the U-shaped frame 202 leaving the fitting groove 103, so that the simulated material after the experiment inside the main body 1 is pushed out, so that the top of the lifting plate 201 coincides with the top of the main body 1;

[0039] like Figure 1-Figure 4 and Figure 6 As shown, it includes a transmission mechanism 3, which is arranged at the bottom of the main body 1. The transmission mechanism 3 is used to drive the lifting mechanism 2 to operate. The transmission mechanism 3 also includes a motor 301. The motor 301 is fixedly connected between each group of support columns 104. The output end of the motor 301 is fixedly connected with a bidirectional screw rod 302. The outer wall of the bidirectional screw rod 302 is fixedly connected with a gear 303 at a place corresponding to the slide slot frame 108. The outer wall of the bidirectional screw rod 302 is threadedly connected with two moving push strips 304. The two moving push strips 304 are symmetrically distributed with the gear 303 as the center, and the moving push strips 304 are slidably connected with the inside of the bar hole 106. Then, one end of the double-headed connecting strip 204 away from the sliding connecting frame 203 is rotatably connected to the moving push strip 304, and the motor 301 drives the bidirectional screw rod 302 to rotate, driving the two moving push strips 304 symmetrically arranged on the bidirectional screw rod 302 to move away from each other inside the bar-shaped hole 106. During the movement of the moving push strip 304, one end of the double-headed connecting strip 204 rotates on the moving push strip 304, and the end of the moving push strip 304 away from the moving push strip 304 rotates relatively on the sliding connecting frame 203, so that the moving push strip 304 gradually approaches the sliding connecting frame 203;

[0040] like Figure 1 , Figure 2 , Figures 4 to 6 and Figure 8As shown, it includes an extension mechanism 4, which is arranged at the bottom of one of the extension frames 107. The extension mechanism 4 includes two L-shaped rotating connecting frames 410, and the two L-shaped rotating connecting frames 410 are fixedly connected to the bottom of one of the extension frames 107. The outer walls of the two L-shaped rotating connecting frames 410 are rotatably connected with the extension placement frame 401. When the transmission mechanism 3 controls the lifting mechanism 2 to lift the simulated material inside the main body 1, the transmission mechanism 3 will synchronously control the extension placement frame 401 to rotate on the two L-shaped rotating connecting frames 410, so that the extension placement frame 401 is spliced ​​with the extension frame 107. After the simulated material is manually pushed onto the extension placement frame 401, during the resetting process of the extension placement frame 401, the extension placement frame 401 is The simulated material on 401 slides downward to the area below the main body 1 under the influence of gravity. The extension mechanism 4 also includes a thickening strip 402, which is fixedly connected to the side of the extension rack 401 close to the main body 1. A rack 403 is slidably connected inside the slide frame 108. The top of the rack 403 is meshed with the gear 303. A roller push column 404 is fixedly connected to the side of the extension rack 401 close to the extension rack 401. A roller is arranged on the top of the roller push column 404. The roller on the top of the roller push column 404 is against the thickening strip 402. Two L-shaped pulley frames 405 are fixedly connected to the side of the extension rack 401 away from the thickening strip 402. Rollers are arranged on the inner walls of the bottoms of the two L-shaped pulley frames 405. The two L-shaped pulley frames 405 are mutually connected. The sides close to each other are provided with side slide grooves 406, and the side of the L-shaped pulley frame 405 away from the extension placement frame 401 is penetrated with a movable hole 407, and the side of the L-shaped pulley frame 405 away from the extension placement frame 401 is fixedly connected with an extension connector 408, and the extension connector 408 is distributed below the movable hole 407. The side of the extension placement frame 401 away from the thickening strip 402 is provided with a buffer slide groove 409. When the two-way screw rod 302 rotates and drives the lifting plate 201 to rise through the double-headed connecting strip 204, the gear 303 is synchronously driven to rotate, and the rack 403 is meshed with the gear 303 through the rack 403, and the rack 403 is synchronously driven to slide on the slide groove frame 108, so that the roller on the roller push column 404 is against the thickening strip 402. As the rack 403 drives the roller push column 404 to continue to move, it will push the extension placement rack 401 to rotate as a whole on the two L-shaped rotating connecting frames 410, so that the extension placement rack 401 gradually overlaps with the extension rack 107 on the top of the L-shaped rotating connecting frame 410, and the simulated material after being lifted on the lifting plate 201 can be pushed to the top of the L-shaped rotating connecting frame 410, so that the simulated material contacts the push rack 503. When the lifting plate 201 descends and resets, it synchronously drives the extension placement rack 401 to slowly rotate on the two L-shaped rotating connecting frames 410 and slowly resets, so that the simulated material on the extension placement rack 401 rotates together with the extension placement rack 401, so that the material lifted to the top of the main body 1 can be moved to a place near the bottom.

[0041] like Figure 1 , Figure 2 , Figure 5 , Figure 7 and Figure 8 As shown, a buffer mechanism 5 is arranged inside the buffer slide 409, and the buffer mechanism 5 also includes a sliding block 501, the sliding block 501 is slidably connected inside the buffer slide 409, a buffer spring 502 is fixedly connected between the sliding block 501 and the top of the buffer slide 409, a push frame 503 is fixedly connected to the outer wall of the sliding block 501, and movable push strips 504 are rotatably connected to the opposite sides of the push frame 503, and the movable push strip 504 is rotatably connected to the inside of the side slide 406, and the movable push strip 504 is rotatably connected to the inside of the side slide 406, and the insides of the two side slides 406 are slidably connected with a stop block 505, and the outer wall of the stop block 505 is away from the movable push frame 503. One end of the movable push bar 504 is fixedly connected to a push rod frame 506, and the push rod frame 506 is distributed on the side of the L-shaped pulley frame 405 away from the extension placement frame 401. The outer wall of the extended connecting head 408 is rotatably connected to a push plate frame 508, and the push plate frame 508 is against the outer wall of the push rod frame 506. The outer wall of the push plate frame 508 away from the push rod frame 506 is fixedly connected to a rotating pressure rod frame 507, and the inside of the movable hole 407 is slidably connected to an extrusion friction block 511, and the side of the extrusion friction block 511 away from the extension placement frame 401 is slidably connected to a telescopic block 510, and the side of the telescopic block 510 away from the extrusion friction block 511 is fixedly connected to a sliding hole block 509, and the inner wall of the telescopic block 510 An inner spring 512 is fixedly connected to the inner wall of the extrusion friction block 511, an outer spring 513 is fixedly connected between the sliding hole block 509 and the side of the L-shaped pulley frame 405 away from the extension placement frame 401, and the sliding hole block 509 is movably connected to the end of the rotating pressure rod frame 507 away from the push plate frame 508. When the simulated material on the extension placement frame 401 slides downward along with the extension placement frame 401 and pushes the push frame 503 to slide synchronously, the two ends of the movable push strip 504 will rotate on the push frame 503 and inside the side slide groove 406 respectively, thereby synchronously driving the end of the movable push strip 504 on the push frame 503 away from the push frame 503 to move away from the extension One end of the extended placement rack 401 slides, and when the push rack 503 follows the simulated material to slide for a distance, the connection between the movable push strip 504 and the side slide groove 406 will be against the block 505 inside the side slide groove 406, pushing the block 505 to slide inside the side slide groove 406, and then the push rod rack 506 will be against the push plate rack 508, and the thrust will be transmitted to the push plate rack 508, so that the push plate rack 508 rotates around the extended connecting head 408 as the axis, and the rotating pressure rod rack 507 is connected with the movable hole on the sliding hole block 509, driving the rotating pressure rod rack 507 to apply a pressing force to the sliding hole block 509, so that the extrusion friction block 511 passes through the movable hole 407 and presses against the surface of the material.

[0042] The working principle of the technical solution provided by the present invention is as follows:

[0043] The two-way screw rod 302 is driven by the motor 301 to rotate, and the two moving push strips 304 symmetrically arranged on the two-way screw rod 302 are driven to move away from each other inside the bar hole 106. During the movement of the moving push strip 304, one end of the double-headed connecting strip 204 is caused to rotate on the moving push strip 304, and the end of the moving push strip 304 away from the moving push strip 304 will rotate relatively on the sliding connecting frame 203, so that the moving push strip 304 gradually approaches the sliding connecting frame 203, so that the sliding connecting frame 203 can be driven to rise inside the lifting slide hole 109 through the double-headed connecting strip 204, and then the U-shaped frame 202 can leave the fitting groove 103 and drive the lifting plate 201 to rise inside the main body 1, thereby pushing out the material simulated after the experiment inside the main body 1, so that the top of the lifting plate 201 coincides with the top of the main body 1, and when the two-way screw rod 302 rotates, the lifting plate 201 is driven to rise through the double-headed connecting strip 204, which will synchronously drive the gear 303 to rotate. The rack 403 is meshed with the gear 303, and the rack 403 is synchronously driven to slide on the slide frame 108, so that the roller on the roller push column 404 is against the thickening strip 402. As the rack 403 drives the roller push column 404 to continue to move, the extension placement frame 401 is pushed to rotate as a whole on the two L-shaped rotating connecting frames 410, so that the extension placement frame 401 gradually overlaps with the extension frame 107 on the top of the L-shaped rotating connecting frame 410, and the lifting plate 201 can be lifted and simulated. The material is pushed to the top of the L-shaped rotating connecting frame 410, so that the simulated material contacts the pushing frame 503. When the lifting plate 201 descends and resets, the extension placement frame 401 is synchronously driven to rotate slowly on the two L-shaped rotating connecting frames 410, and slowly resets, so that the simulated material on the extension placement frame 401 rotates together with the extension placement frame 401, so that the material lifted to the top of the main body 1 can be moved to a place close to the bottom, so as to facilitate the complete removal of the simulated material from the experimental device.

[0044] When the simulated material on the extension rack 401 slides downward along with the extension rack 401 and pushes the push rack 503 to slide synchronously, the two ends of the movable push bar 504 will rotate on the push rack 503 and inside the side slide groove 406 respectively, thereby synchronously driving the end of the movable push bar 504 on the push rack 503 away from the push rack 503 to slide in the side slide groove 406 toward the end away from the extension rack 401. When the push rack 503 slides a certain distance along with the simulated material After that, the connection between the movable push strip 504 and the side slide groove 406 will be against the block 505 inside the side slide groove 406, pushing the block 505 to slide inside the side slide groove 406, and then the push rod frame 506 will be against the push plate frame 508, and the thrust will be transmitted to the push plate frame 508, so that the push plate frame 508 will rotate around the extended connector 408 as the axis, and the rotating pressure rod frame 507 will be driven to rotate the slide hole block 509 through the connection between the rotating pressure rod frame 507 and the movable hole on the slide hole block 509. 9 applies a pressing force to make the extrusion friction block 511 pass through the movable hole 407 and abut against the surface of the material. At the same time, by rotating the pressure rod frame 507 to press the sliding hole block 509, the telescopic block 510 will be retracted into the extrusion friction block 511 and the inner spring 512 will be compressed, so that the elastic force of the inner spring 512 is converted into the extrusion force of the extrusion friction block 511 on the simulated material. At the same time, the sliding hole block 509 will compress the outer spring 513 to facilitate the sliding hole block 509 to lose the pressing force and then push the frame 503 and the extrusion friction block 511 to reset. The simulated material is squeezed by the extrusion friction block 511. When the simulated material slides up and down on the extension placement frame 401 and there is still a distance between it and the roller inside the L-shaped pulley frame 405, the speed of the simulated material sliding down is further slowed down, thereby reducing the speed of the simulated material sliding down, and reducing the force on the material itself hitting the L-shaped pulley frame 405 due to the simulated material sliding down too fast.

[0045] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A floor karst aquifer dynamic water grouting simulation experimental device, comprising a main body and two side plates, the two side plates are fixedly connected to the inner wall of the main body, and the top of the main body is fixedly connected to two extension frames, characterized in that: Also includes: A lifting mechanism, the lifting mechanism is arranged inside the main body, and the lifting mechanism is used to lift the simulated material inside the main body; A transmission mechanism, which is arranged at the bottom of the main body and is used to drive the lifting mechanism to operate; The extension mechanism is arranged at the bottom of one of the extension frames, and the extension mechanism includes two L-shaped rotating connecting frames, the two L-shaped rotating connecting frames are fixedly connected to the bottom of one of the extension frames, and the outer walls of the two L-shaped rotating connecting frames are rotatably connected to the extension placement frame. When the transmission mechanism controls the lifting mechanism to lift the simulated material inside the main body, the transmission mechanism will synchronously control the extension placement frame to rotate on the two L-shaped rotating connecting frames, so that the extension placement frame is spliced ​​with the extension frame, and after the simulated material is manually pushed onto the extension placement frame, during the resetting process of the extension placement frame, the simulated material on the extension placement frame is affected by gravity and slides downward to the area below the main body; A through hole is formed through the bottom of the main body, the two side panels are symmetrically distributed, and one of the side panels is provided with two water pipe interfaces, the outer walls of the two side panels are provided with two fitting grooves, each of which is distributed at the connection between the side panel and the inner wall of the main body, and two groups of support columns are fixedly connected to the bottom of the main body; A cross bar is fixedly connected between each group of support columns, and two strip holes are penetrated through the outer walls of the two cross bars, and a slide frame is fixedly connected between the two cross bars, and the two strip holes are symmetrically distributed with the slide frame as the center, and two lifting sliding holes are provided on the inner walls on the opposite sides of the main body, and each lifting sliding hole is distributed corresponding to each support column; The lifting mechanism also includes a lifting plate, which is slidably connected to the inner wall of the main body, and two U-shaped frames are fixedly connected on opposite sides of the lifting plate, each of the U-shaped frames is engaged with each engaging groove, and one end of the U-shaped frame away from the lifting plate is fixedly connected to a sliding connecting frame, and the sliding connecting frame is slidably connected to the inside of the lifting slide hole, and the outer wall of the sliding connecting frame is rotatably connected to a double-headed connecting strip, and every two of the double-headed connecting strips are symmetrically distributed with the slide slot frame as the center; The transmission mechanism also includes a motor, the motor is fixedly connected between each group of support columns, the motor output end is fixedly connected to a bidirectional screw rod, the outer wall of the bidirectional screw rod and a place corresponding to the slide slot frame are fixedly connected to a gear, the outer wall of the bidirectional screw rod is threadedly connected to two movable push strips, the two movable push strips are symmetrically distributed with the gear as the center, and the movable push strips are slidably connected to the inside of the bar-shaped hole, and the end of the double-headed connecting strip away from the sliding connecting frame is rotatably connected to the movable push strip; The extension mechanism also includes a thickening strip, which is fixedly connected to a side of the extension placement rack close to the main body, a rack is slidably connected inside the slide slot rack, the top of the rack is meshed with a gear, a roller push column is fixedly connected to a side of the rack close to the extension placement rack, a roller is arranged on the top of the roller push column, and the roller on the top of the roller push column abuts against the thickening strip; The side of the extension placement rack away from the thickening strip is fixedly connected to two L-shaped pulley racks, the bottom inner walls of the two L-shaped pulley racks are provided with rollers, the sides of the two L-shaped pulley racks close to each other are provided with side slide grooves, the side of the L-shaped pulley rack away from the extension placement rack is penetrated with a movable hole, the side of the L-shaped pulley rack away from the extension placement rack is fixedly connected with an extension connector, the extension connector is distributed below the movable hole, and the side of the extension placement rack away from the thickening strip is provided with a buffer slide groove; A buffer mechanism is arranged inside the buffer slide, and the buffer mechanism also includes a sliding block, the sliding block is slidably connected inside the buffer slide, a buffer spring is fixedly connected between the sliding block and the top of the buffer slide, a push rack is fixedly connected to the outer wall of the sliding block, and movable push strips are rotatably connected to the opposite sides of the push rack, and one end of the movable push strip away from the push rack is slidably connected to the inside of the side slide, and the movable push strip is rotatably connected to the inside of the side slide; The two side slide grooves are both slidably connected with a stop block, and the end of the stop block outer wall away from the movable push bar is fixedly connected with a push rod frame, and the push rod frame is distributed on the side of the L-shaped pulley frame away from the extension placement frame, and the outer wall of the extension connector is rotatably connected with a push plate frame, and the push plate frame is against the outer wall of the push rod frame; The outer wall of the push plate frame is fixedly connected to an end of the push rod frame away from the push rod frame, and an extrusion friction block is slidably connected to the inside of the movable hole. The extrusion friction block is slidably connected to a telescopic block on a side away from the extension placement frame, and the telescopic block is fixedly connected to a sliding hole block on a side away from the extrusion friction block. An inner spring is fixedly connected between the sliding hole block and the inner wall of the extrusion friction block, and an outer spring is fixedly connected between the sliding hole block and a side of the L-shaped pulley frame away from the extension placement frame. The sliding hole block is movably connected to an end of the rotating pressure rod frame away from the push plate frame.

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