Experimental device for processing rock penetrating fracture by magnetic attraction template

Abstract

The present application relates to a kind of experimental device of processing rock through fracture with magnetic template, including adjustable box and box driving mechanism, adjustable box is provided with template inside, wherein adjustable box is enclosed by a pair of oppositely arranged first sliding baffle and a pair of oppositely arranged second sliding baffle and is opened at one end, box driving mechanism is arranged in the lower part of adjustable box and is hinged with the bottom of first sliding baffle and second sliding baffle respectively, the size of the cavity in adjustable box is controlled by adjusting the relative movement of first sliding baffle and second sliding baffle through box driving mechanism;The outer part of second sliding baffle is respectively provided with template orientation adjusting mechanism, template is inserted in the inner wall of a pair of second sliding baffle and is magnetically connected with template orientation adjusting mechanism, and the orientation angle of template in adjustable box is controlled by the transverse movement of template orientation adjusting mechanism along second sliding baffle.The present application can realize the control of any fracture position and angle in size-controllable sample.

Description

Technical Field

[0001] This invention relates to a simulated rock sample processing device for rock mechanics experiments, and more particularly to an experimental device for processing rock through-cracks using a magnetic template. Background Technology

[0002] In indoor experiments, pre-fabricated rock fractures can be structurally classified into through-fractures and non-through-fractures. Regardless of the type, controlling the processing method and location of the fractures is quite challenging, and it is difficult to pre-fabricate multiple duplicate samples with precisely consistent fracture locations. Currently, experimental setups for pre-fabricated rock fractures mostly employ coarse control to generate fractures by controlling their size and location, and the experimental process is often a complex manual mechanized operation, making the process rather cumbersome.

[0003] CN114858561B discloses a test device and method for preparing fractured rock materials. It uses a prefabricated fractured steel plate with adjustable horizontal position to generate various through-cracks or non-through-cracks, and can control the sample size relatively flexibly. However, it fails to accurately control the position of the cracks, and the experimental process is relatively complicated.

[0004] CN113155565A discloses a device for preparing rock-like material specimens and its usage method. The device includes a casting mold and a crack positioning fixture, which can control the number, size and orientation of cracks. Although it can be used with most existing casting molds in the laboratory, its control over the position and angle of cracks is limited, and it cannot generate cracks at arbitrary positions and angles. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide an experimental device for processing through-cracks in rocks using a magnetic template. The device employs a flexible magnetic template, which is magnetically controlled to adsorb and fix the template to reserve the crack position, thereby achieving control over the position and angle of any crack in a sample with controllable size.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An experimental apparatus for processing rock through-fissures using a magnetic template includes an adjustable box and a box driving mechanism. The adjustable box contains a template. The adjustable box comprises a pair of opposing first sliding baffles and a pair of opposing second sliding baffles, which together form an adjustable box with one open end. The box driving mechanism is located at the lower part of the adjustable box and is hinged to the bottoms of the first and second sliding baffles. Adjusting the relative movement of the first and second sliding baffles via the box driving mechanism controls the size of the inner cavity of the adjustable box. Template orientation adjustment mechanisms are respectively provided on the outside of the second sliding baffles. The template is inserted into both sides of the inner wall of the pair of second sliding baffles and magnetically connected to the template orientation adjustment mechanisms. The template orientation adjustment mechanisms move along the second sliding baffles to control the orientation angle of the template within the adjustable box.

[0008] Furthermore, the first sliding baffle includes a triangular baffle and a square baffle, which are connected to form an L-shaped structure. The triangular baffles of a pair of first sliding baffles are fitted together to form the bottom of the adjustable box, and the square baffles of a pair of first sliding baffles are arranged opposite each other to form a pair of boxes of the adjustable box. The second sliding baffle includes a square clamping plate, and the square clamping plates of a pair of second sliding baffles are arranged opposite each other to form another pair of boxes of the adjustable box.

[0009] Furthermore, the upper surface of the square baffle is provided with a first sliding groove, and one side of the upper surface of the square baffle is provided with a first sliding hook protruding outward, the first sliding hook being arranged side by side with the first sliding groove; a first slider is provided on the lower surface of the square baffle; a groove cavity penetrating its upper surface is provided inside the square clamping plate, and a second sliding groove is provided on the upper surface of the square clamping plate on one side of the groove cavity, the second sliding groove being arranged side by side with the upper end of the groove cavity; a second slider is provided on the lower surface of the square clamping plate; and a first sliding hook is provided on one side of the square clamping plate. A roller is provided on the upper surface of the other side of the square clamping plate opposite to the roller, and a second sliding hook protrudes outward. The second sliding hook is located at the end of the second sliding groove. The lower end of the square clamping plate is provided with a baffle limiting groove to accommodate the sliding of the triangular baffle. The size of the inner cavity of the adjustable box is controlled when the first sliding hook is embedded in the corresponding second sliding groove and moves along the second sliding groove, when the second sliding hook is embedded in the corresponding first sliding groove and moves along the first sliding groove, and when the triangular baffle is embedded in the corresponding baffle limiting groove and moves.

[0010] Furthermore, the template is a flexible board, and aluminum foil is embedded at both ends of the template. The aluminum foil is respectively pasted on the inner side of the second sliding baffle. Magnetic powder is sandwiched inside the aluminum foil, and the magnetic powder in the aluminum foil at both ends of the template is more than the magnetic powder in the aluminum foil pasted on the second sliding baffle.

[0011] Furthermore, the template orientation adjustment mechanism includes a module moving groove rod, an adjustment shaft is provided in the middle of the module moving groove rod, the module moving groove rod is vertically embedded in the groove rod cavity of the square clamping plate, a limiting slot is opened laterally in the middle of the outer plate surface of the square clamping plate, the adjustment shaft passes through the limiting slot and extends out of the outer side of the square clamping plate, magnetic powder is provided at both ends of the template opposite to the square clamping plate, a magnet is provided in the module moving groove rod, rotating the adjustment shaft causes the magnet to drive the magnetic powder and cause the template to move relative to the other side.

[0012] Furthermore, the housing drive mechanism includes a base with a track groove, in which the first slider and the second slider are respectively embedded; a gear transmission mechanism is provided at the lower part of the base, the gear transmission mechanism includes a cross-shaped bracket, a baffle drive gear is provided at the center of the lower end of the cross-shaped bracket, and a set of meshing driven pinion and driven gear are respectively provided around the lower end of the cross-shaped bracket, the baffle drive gear meshing with the driven gear; each driven pinion is hinged to a crank connecting rod mechanism located at the upper end of the cross-shaped bracket, one end of one pair of opposite crank connecting rod mechanisms is hinged to the corresponding first slider, and one end of the other pair of opposite crank connecting rod mechanisms is hinged to the corresponding second slider.

[0013] Furthermore, the housing drive mechanism also includes a housing and a base plate. The housing is disposed on the outer periphery of the base and surrounds the adjustable housing and template orientation adjustment mechanism. The base plate is disposed at the bottom of the housing and covers the gear transmission mechanism. The baffle drive gear meshes with a baffle transmission gear disposed on the base plate, and the baffle transmission gear is driven by a rack and pinion.

[0014] Furthermore, the template orientation adjustment mechanism also includes a coarse adjustment gear and a template drive wheel. The coarse adjustment gear is sleeved on the end of the adjustment shaft, and a template transmission gear meshes with the coarse adjustment gear. The template transmission gear is driven by the template drive wheel through a toothed chain. The template drive wheel is located on the upper outer periphery of the second sliding baffle, and the template drive wheel and the template transmission gear are fixed on a gear housing.

[0015] Furthermore, a fine-tuning gear is sleeved on the adjusting shaft, and a circumferential scale line is provided on the fine-tuning gear. A stop rod is provided in the gear housing located at the upper end of the fine-tuning gear. An arc-shaped rack and a probe are provided at the lower end of the stop rod. A spring is sleeved on the stop rod. The stop rod is supported and limited in the gear housing by the spring. Under the action of the spring, the stop rod extends so that the arc-shaped rack meshes with the fine-tuning gear and is limited in position, and the probe points to the circumferential scale line.

[0016] Furthermore, a movable slider is sleeved on the adjusting shaft, and the movable slider is embedded in the limiting groove and moves along the limiting groove to drive the module moving rod to move in the groove cavity.

[0017] The present invention has the following advantages and effects due to the adoption of the above technical solutions.

[0018] The present invention provides an experimental device for processing rock through-cracks using a magnetic template. The adjustable box is formed by a first sliding baffle and a second sliding baffle, creating a retractable and movable cavity structure that allows for flexible and free control of the sample size. At the same time, the template orientation adjustment mechanism is located on the outside of the adjustable box and is magnetically attracted and fixed between it and the flexible magnetic template. The template orientation adjustment mechanism can be used to adjust and control the template to form any pre-reserved crack position and angle within the adjustable box. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the isometric structure of the test device of the present invention.

[0020] Figure 2 for Figure 1 The main view.

[0021] Figure 3 This is a schematic diagram of the exploded structure of the experimental device of the present invention.

[0022] Figure 4 This is an isometric structural diagram of the first sliding baffle of the present invention.

[0023] Figure 5 for Figure 4 The main view.

[0024] Figure 6 for Figure 4 Side view.

[0025] Figure 7 This is an isometric structural diagram of the second sliding baffle of the present invention.

[0026] Figure 8 for Figure 7 The main view.

[0027] Figure 9 for Figure 8 A sectional view along the AA direction.

[0028] Figure 10 This is an exploded view of the template orientation adjustment mechanism of the present invention.

[0029] Figure 11 This is a schematic diagram of the modular moving slot structure of the present invention.

[0030] Figure 12 for Figure 11 Side view.

[0031] Figure 13 This is an enlarged schematic diagram of the template and aluminum foil connection structure of the present invention.

[0032] Figure 14 This is an enlarged schematic diagram of the interface between the template and the aluminum foil of the present invention.

[0033] Figure 15 This is an enlarged schematic diagram of the interface between the template and the aluminum foil after rotation according to the present invention.

[0034] Figure 16 This is an enlarged schematic diagram of the cross-sectional structure of the aluminum foil connected at the top and bottom in this invention.

[0035] Figure 17 This is an exploded structural diagram of the housing drive mechanism of the present invention.

[0036] Figure 18 This is a schematic diagram of the assembly structure of the housing drive mechanism of the present invention.

[0037] Figure 19 This is a schematic diagram of the assembly structure of the housing and base of the housing drive mechanism of the present invention.

[0038] Figure 20 (a) and (b) are schematic diagrams of the changes in the adjustable box structure before and after adjustment according to the present invention.

[0039] The attached figures are labeled as follows:

[0040] 1-Adjustable housing; 11-First sliding baffle; 12-Second sliding baffle;

[0041] 101-Square baffle, 102-Triangular baffle, 103-First sliding hook, 104-First sliding groove, 105-First slider, 106-Straight scale line, 201-Square clamping plate, 202-Limiting groove, 203-Second sliding hook, 204-Grod cavity, 205-Second sliding groove, 206-Roller, 207-Second slider, 208-Baffle limiting groove;

[0042] 2-Template, 21-Magnetic powder, 22-Aluminum foil, 23-Interface;

[0043] 3-Box drive mechanism, 31-Gear transmission mechanism, 32-Base, 33-Base plate, 34-Outer shell;

[0044] 311-Cross-shaped bracket, 312-Baffle drive gear, 313-Driven pinion, 314-Driven large gear, 315-Crank connecting rod mechanism, 3151-Crank, 3152-Connecting rod, 316-Baffle transmission gear, 317-Rack, 318-Slider, 321-Railway groove, 322-Gear shaft, 331-Base plate gear shaft, 341-Horizontal slot hole;

[0045] 4- Template orientation adjustment mechanism;

[0046] 401-Module moving slot rod, 402-Adjusting shaft, 403-Magnet, 404-Coarse adjustment gear, 405-Template drive wheel, 406-Template transmission gear, 407-Gear chain, 408-Gear housing, 409-Moving slider, 410-Fine adjustment gear, 411-Circumferential scale line, 412-Stop rod, 413-Arc rack, 415-Spring. Detailed Implementation

[0047] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative of the essential spirit of the technical solution of the present invention.

[0048] This invention discloses an experimental apparatus for processing through-and-through cracks in rock using a magnetic template. The apparatus includes an adjustable box with a drive mechanism at the bottom for adjusting the internal space. A flexible magnetic template is placed inside the box, and an angle adjustment device is located on the outside of the box, magnetically connected to both ends of the template. The template is fixed at a pre-reserved crack position within the box. After cement mortar is poured into the adjustable box, the space left after removing the template forms a pre-fabricated crack. Cement mortar is then poured again into the crack position to create a weak surface, which is the pre-fabricated rock fissure. This experimental apparatus allows for arbitrary angle and position adjustment of the template by using an electromagnetic attraction between the template angle adjustment device and the flexible template ends. The template can generate cracks of arbitrary angle and position within the adjustable box, and the adjustable structure of the box enables precise control of the sample size and shape.

[0049] like Figures 1-3As shown. This invention provides an experimental device for processing rock through-fissures using a magnetic template, comprising an adjustable box 1 and a box driving mechanism 3. The adjustable box 1 contains a template 2. The adjustable box 1 includes a pair of first sliding baffles 11 and a pair of second sliding baffles 12. The pair of first sliding baffles 11 are arranged opposite each other, and the pair of second sliding baffles 12 are also arranged opposite each other. The pair of second sliding baffles 12 are respectively arranged on both sides of the first sliding baffles 11, forming an adjustable box 1 with one open end, together with the pair of first sliding baffles 11. The box driving mechanism 3 is located within the adjustable box 1. The lower part is hinged to the bottom of the first sliding baffle 11 and the second sliding baffle 12 respectively. The relative movement of the first sliding baffle 11 and the second sliding baffle 12 is adjusted by the box drive mechanism 3 to control the size of the inner cavity of the adjustable box 1. The template orientation adjustment mechanism 4 is respectively provided on the outside of the second sliding baffle 12. The template is inserted on both sides of the inner wall of the pair of second sliding baffles 12 and magnetically connected to the template orientation adjustment mechanism 4. The template orientation adjustment mechanism 4 moves laterally along the second sliding baffle 12 to control the orientation angle of the template in the adjustable box 1.

[0050] Specifically, the adjustable housing 1 is a square cavity structure with an opening, formed by a pair of first sliding baffles 11 and a pair of second sliding baffles 12 facing each other. The upper and lower ends of the pair of first sliding baffles 11 and the pair of second sliding baffles 12 are respectively fitted and slidably connected. When the pair of first sliding baffles 11 and the pair of second sliding baffles 12 move relative to each other, the internal space of the adjustable housing 1 can expand or shrink. The housing drive mechanism 3 is located at the lower end of the pair of first sliding baffles 11 and the pair of second sliding baffles 12 and is hinged to them respectively. The housing drive mechanism 3 drives the pair of first sliding baffles 11 and the pair of second sliding baffles 12 to achieve relative movement.

[0051] Furthermore, such as Figures 4-9 As shown. The first sliding baffle 11 is formed by connecting triangular baffles 102 and square baffles 101 to form an L-shaped structure. The triangular baffles 102 of a pair of first sliding baffles 11 are fitted together to form the bottom of the adjustable box 1. The square baffles of a pair of first sliding baffles 11 are arranged opposite each other to form a pair of boxes of the adjustable box 1. The second sliding baffle 12 is a square baffle 101. A pair of second sliding baffles 12 are arranged opposite each other to form another pair of boxes of the adjustable box 1.

[0052] Specifically, the triangular baffle 102 is a right-angled triangle, and the square baffle 101 is a square. One right-angled side of the triangular baffle 102 is the same length as one side of the square baffle 101. One right-angled side of the triangular baffle 102 is perpendicularly connected to the lower edge of the square baffle 101, forming a single integrated structure. The lower edge of the triangular baffle 102 is a certain distance from the lower end face of the square baffle 101. When a pair of first sliding baffles 11 are positioned opposite each other, the hypotenuses of the two triangular baffles 102 fit together to form the square bottom of the adjustable housing 1. When the first sliding baffles 11 and the second sliding baffles 12 move relative to each other, the two triangular baffles 102 of the pair of first sliding baffles 11 move and retract relative to each other along their hypotenuses, and the pair of second sliding baffles 12 move and retract relative to each other along the first sliding baffles 11 to control the size of the internal cavity of the adjustable housing 1.

[0053] Furthermore, the upper surface of the square baffle 101 is provided with a first sliding groove 104, and one side of the upper surface of the square baffle 101 is also provided with a first sliding hook 103 protruding outward, the first sliding hook 103 and the first sliding groove 104 being arranged side by side adjacent to each other; the lower surface of the square baffle 101 is provided with a first sliding block 105; the square clamping plate 201 is provided with a grooved rod cavity 204 penetrating its upper surface, and one side of the upper surface of the square clamping plate 201 on the upper end of the grooved rod cavity 204 is provided with a second sliding groove 205, the second sliding groove 205 and the upper end of the grooved rod cavity 204 being arranged side by side adjacent to each other; the lower surface of the square clamping plate 201 is provided with a second sliding block 207, and one side of the square clamping plate 201 is provided with... A roller 206 is provided. On the other side of the upper end face of the square clamp 201 opposite to the roller 206, a second sliding hook 203 protruding outward is provided. The second sliding hook 203 is located at the end of the second sliding groove 205. The lower end of the square clamp 201 is provided with a baffle limiting groove 208 for accommodating the sliding of the triangular baffle 102. When the first sliding hook 103 is embedded in the corresponding second sliding groove 205 and moves along the second sliding groove 205, and when the second sliding hook 203 is embedded in the corresponding first sliding groove 104 and moves along the first sliding groove 104, and when the triangular baffle 102 is embedded in the corresponding baffle limiting groove 208 and moves, the size of the inner cavity of the adjustable box 1 is controlled.

[0054] Specifically, on the first sliding baffle 11, the first sliding groove 104 passes through the left and right sides of the upper end of the square baffle 101. The first sliding groove 104 is located on the side of the upper end face of the square baffle 101 facing the outer plate surface of the square baffle 101. The first sliding hook 103 is located on the outer side of the upper end of the square baffle 101 on the side connected to the hypotenuse of the triangular baffle. The first sliding hook 103 extends along the upper end of the square baffle 101 to the outer side of the square baffle 101 in a right-angled hook-shaped structure. The outer end of the right-angled hook of the first sliding hook 103 bends downward toward the side of the triangular baffle.

[0055] The first slider 105 is located at the center of the lower end face of the square baffle 101 connected to the triangular baffle 102. Each first slider 105 has a rhomboid block structure, and the lower end of the first slider 105 has a cylindrical sliding column. Straight scale lines 106 are provided on the upper end face of the square baffle 101 on the outer edge of the first slide groove 104 and on the edge of the inner plate of the square baffle 101 connected to the hypotenuse of the triangular baffle 102. The straight scale lines 106 are used to measure the height of the cement mortar poured into the adjustable box 1. After the cement mortar solidifies, it is used to form a sample with controllable dimensions.

[0056] On the second sliding baffle 12, the second sliding groove 205 is disposed at the upper end of the square clamping plate 201, and the two ends of the second sliding groove 205 are at a certain distance from the left and right sides of the square clamping plate 201. The second sliding groove 205 is disposed on the side of the upper end face of the square clamping plate 201 facing the outer plate surface of the square clamping plate 201. The groove rod cavity 204 is a hollow structure, and the groove rod cavity 204 is clamped in the plate surface of the square clamping plate 201, and is disposed on the side of the inner plate surface of the square clamping plate 201.

[0057] The second sliding hook 203 has the same structure as the first sliding hook 103. The second sliding hook 203 extends from the upper end of the square clamp 201 to the outer side of the square clamp 201 in a right-angled hook shape, and the outer end of the right-angled hook 203 is bent towards the lower end of the square clamp 201. The roller 206 is embedded in the outer side of the square clamp 201, and the upper and lower ends of the roller 206 are movably connected to the upper and lower ends of the side of the square clamp 201.

[0058] The limiting groove 202 is located in the middle of the square clamping plate 201 and is parallel to the second sliding groove 205. The limiting groove 202 has a cross groove structure. The front and rear ends of the limiting groove 202 penetrate the outer plate surface of the square clamping plate 201 and the groove cavity 204. The upper and lower ends of the limiting groove 202 extend toward the upper and lower ends inside the square clamping plate 201. The left and right ends of the limiting groove 202 are a certain distance away from the left and right side end faces of the square clamping plate 201.

[0059] The baffle limiting groove 208 is disposed at the lower end of the square clamping plate 201, and the upper end face of the baffle limiting groove 208 is at a distance from the bottom of the groove rod cavity 204. The end of the baffle limiting groove 208 passes through the end face of the square clamping plate 201 on one side of the second sliding hook 203, and the lower edge of the baffle limiting groove 208 is at a certain distance from the lower end face of the square clamping plate 201.

[0060] The second slider 207 is located at the center of the lower end face of the square clamp 201. The structure of the second slider 207 is the same as that of the first slider, and the lower end of the second slider 207 also has a sliding column.

[0061] When a pair of first sliding baffles 11 and a pair of second sliding baffles 12 are arranged to form an adjustable housing 1, the right-angled sides of the triangular baffles of the first sliding baffles 11 are respectively embedded in the baffle limiting grooves 208 of an adjacent second sliding baffle 12, the second sliding hooks 203 of the second sliding baffles 12 are embedded in the first sliding grooves 104 of an adjacent first sliding baffle 11, and the first sliding hooks 103 of the first sliding baffles 11 are embedded in the second sliding grooves 205 of an adjacent second sliding baffle 12. This mutual embedding achieves the connection between the pair of first sliding baffles 11 and the pair of second sliding baffles 12. When the pair of first sliding baffles 11 and the pair of second sliding baffles 12 move relative to each other, the triangular baffles move in their respective baffle limiting grooves 208, the first sliding hooks 103 move in the second sliding grooves 205, and the second sliding hooks 203 move in the first sliding grooves 104. The simultaneous movement of all three achieves the adjustment of the internal size of the adjustable housing 1.

[0062] Furthermore, such as Figures 10-12 As shown. The template orientation adjustment mechanism 4 includes a module moving groove rod 401, with an adjustment shaft 402 located in the middle of the module moving groove rod 401. The module moving groove rod 401 is vertically embedded in the groove cavity 204 of the square clamping plate 201. A limiting slot 202 is laterally formed in the middle of the outer plate surface of the square clamping plate 201. The adjustment shaft 402 passes through the limiting slot 202 and extends outward from the outside of the square clamping plate 201. Magnetic powder 21 is provided inside the two ends of the template 2 opposite to the square clamping plate 201. A magnet 403 is provided inside the module moving groove rod 401. Rotating the adjustment shaft 402 causes the magnet 403 to drive the magnetic powder 21, thus moving the template relative to the other end.

[0063] Specifically, the modular moving rod 401 has a strip-shaped groove structure. A magnet 403, preferably an electromagnet, is embedded in the groove of the modular moving rod 401. An adjusting shaft 402 is vertically connected to the middle of the modular moving rod 401 and extends outward toward the square clamping plate 201. The groove of the modular moving rod 401 is vertically embedded in the groove cavity 204 of the square clamping plate 201. The adjusting shaft 402 is embedded in the limiting slot 202 of the square clamping plate 201 and extends outward from the outer surface of the square clamping plate 201. The modular moving rod 401 can move laterally inside the square clamping plate 201 along the groove cavity 204 and the limiting slot 202. The magnet 403 inside the modular moving rod 401 attracts and drives the magnetic powder 21 inside the template to move, thereby driving the template to rotate and move.

[0064] Furthermore, the template orientation adjustment mechanism 4 also includes a coarse adjustment gear 404 and a template drive wheel 405. The coarse adjustment gear 404 is sleeved on the end of the adjustment shaft 402. A template transmission gear 406 meshes on the coarse adjustment gear. The template transmission gear 406 is driven and connected to the template drive wheel 405 through a toothed chain 407. The template drive wheel 405 is located on the upper outer periphery of the second sliding baffle 12. The template drive wheel 405 and the template transmission gear 406 are fixed on a gear housing 408.

[0065] To facilitate the adjustment and movement of the template orientation adjustment mechanism 4, a gear transmission mechanism is installed on the template orientation adjustment mechanism 4 to adjust the rotational movement of the template. The gear housing 408 is a frame-type outer shell, located outside the second sliding baffle 12. The coarse adjustment gear 404, template drive wheel 405, template transmission gear 406, and gear chain 407 are all located inside the gear housing 408. The rotation shafts of the template drive wheel 405 and template transmission gear 406 are fixed inside the gear housing 408 and movably connected to it. The template drive wheel 405 has a double-sided rotating wheel structure, with identical structures on both sides, connected by a rotating shaft via the gear chain 407. The template drive wheel 405 is located on the upper part of the gear housing 408, with its rotating wheel exposed outside the gear housing 408 for easy adjustment of rotation. The template drive gear 406 is located at the lower part of the gear housing 408 and meshes with the coarse adjustment gear 404. The template drive gear 406 has a double gear structure, consisting of a template drive pinion 4061 and a template drive gear 4062 connected by a toothed chain 407 shaft. The template drive pinion 4061 has fewer teeth, while the template drive gear 4062 has more teeth, and the template drive gear 4062 meshes with the coarse adjustment gear 404. The template drive wheel 405 is arranged vertically opposite to the template drive gear 406, and the toothed chain 407 is sleeved on the toothed chain 407 shaft on the template drive wheel 405 and the template drive gear 406 to achieve a drive connection.

[0066] Furthermore, a fine-tuning gear 410 is sleeved on the adjusting shaft 402. The fine-tuning gear 410 is provided with a circumferential scale line 411. A stop rod 412 is provided in the gear housing 408 located at the upper end of the fine-tuning gear 410. An arc-shaped rack 413 and a probe are provided at the lower end of the stop rod 412. A spring 415 is sleeved on the stop rod 412. The stop rod 412 is supported and limited in the gear housing 408 by the spring 415. Under the action of the spring 415, the stop rod 412 extends outward so that the arc-shaped rack 413 meshes with the fine-tuning gear 410 and is limited in position, and the probe points to the circumferential scale line 411.

[0067] To facilitate precise adjustment and measurement of the template orientation adjustment mechanism 4, a fine-tuning gear 410 is fitted on the adjustment shaft 402 and meshes with the template transmission pinion 4061 for precision transmission. The stop rod 412 is an L-shaped structure rod. The upper end of the stop rod 412 can be hung in the slot at the upper end of the gear housing 408. The lower part of the stop rod 412 passes through the fixing block on the gear housing 408. The spring 415 is sleeved on the stop rod 412 at the lower end of the fixing block. When the stop rod 412 is hung at the upper end of the gear housing 408, the arc-shaped rack 413 and the probe at the lower end of the stop rod 412 move away from the fine-tuning gear 410. When the upper end of the stop rod 412 leaves the gear housing 408, the stop rod 412 moves downward under the action of the spring 415. At this time, the arc-shaped rack 413 limits the rotation of the fine-tuning gear 410, and the probe indicates the circumferential scale line 411 on the fine-tuning gear 410 to measure the angle of rotation of the template driven by the template moving groove rod.

[0068] Furthermore, a movable slider 409 is sleeved on the adjusting shaft 402. The movable slider 409 is embedded in the limiting groove 202 and moves along the limiting groove 202, driving the module moving rod 401 to move within the groove cavity 204. To facilitate the movement of the template moving rod 401 within the limiting groove 202 of the second sliding baffle 12, the movable slider 409 is a cross-shaped block structure with protrusions on all four sides. The thickness of the movable slider 409 is the same as the thickness of the square clamping plate 201, and the four sides of the movable slider 409 are respectively embedded in the limiting grooves 202 of the square clamping plate 201 and match the limiting grooves.

[0069] Furthermore, such as Figure 13 , Figure 14 As shown. The template 2 is a flexible board, and aluminum foil 22 is embedded at both ends of the template 2. The aluminum foil 22 is respectively pasted on the inner side of the second sliding baffle 12. Magnetic powder 21 is sandwiched inside the aluminum foil 22. The amount of magnetic powder 21 in the aluminum foil 22 at both ends of the template 2 is greater than the amount of magnetic powder 21 in the aluminum foil 22 pasted on the second sliding baffle 12.

[0070] Specifically, the template 2 is a square flexible plate structure, preferably fiberboard or resin board. The template 2 is used to create cracks in the specimen, and its surface is covered with a thin film to prevent cement mortar from adhering. Aluminum foil 22 is pasted onto the inner sides of the second sliding baffles 12 at both ends of the template 2. Each side of the aluminum foil 22 is composed of several long strips of aluminum foil 22 embedded vertically and connected together. The middle part of each side of the aluminum foil 22 is embedded at the end of the template 2, and one end of each side of the aluminum foil 22 is fixed to the roller 206 of the second sliding baffle 12. The roller 206 is composed of several short sections connected coaxially vertically, with the middle section being three times the length of the two side sections. Each strip of aluminum foil 22 is correspondingly fixed to its corresponding short section. The roller 206 allows the aluminum foil 22 to move relative to each other.

[0071] The aluminum foil 22 has an internal interlayer of magnetic powder 21, preferably iron powder. The thickness of the aluminum foil 22 embedded at both ends of the template 2 is greater than the thickness of the aluminum foil 22 pasted on the second sliding baffle 12. This results in more iron powder in the interlayer of the aluminum foil 22 at both ends of the template than in the interlayer of the aluminum foil 22 pasted on the second sliding baffle 12. Consequently, there is a greater attraction between the two ends of the template 2 and the electromagnet in the module moving groove 401, and the template 2 moves with the electromagnet.

[0072] like Figure 15 , Figure 16 As shown. When the template 2 moves, each aluminum foil 22 moves the same distance around the second sliding baffle 12. The position of the interface 23 between the aluminum foil 22 and the template changes, but it always remains in contact with the template. When the template 2 rotates at a certain angle, the aluminum foils 22 move relative to each other, and the interface 23 becomes inclined and remains in contact with the template 2.

[0073] Furthermore, such as Figures 17-19 As shown. The housing drive mechanism 3 includes a base 32, on which a track groove 321 is provided. The first slider 105 and the second slider 207 are respectively embedded in the corresponding track groove 321. A gear transmission mechanism is provided at the lower part of the base 32. The gear transmission mechanism includes a cross-shaped bracket 311. A baffle drive gear 312 is provided at the center of the lower end of the cross-shaped bracket 311. A set of meshing driven pinions 313 and driven gears 314 are respectively provided around the lower end of the cross-shaped bracket 311. The baffle drive gear 312 meshes with the driven gears 314. Each driven pinion 313 is hinged to a crank-connecting rod mechanism 315 located at the upper end of the cross-shaped bracket 311. One end of one pair of opposing crank-connecting rod mechanisms 315 is hinged to the corresponding first slider 105, and one end of the other pair of opposing crank-connecting rod mechanisms is hinged to the corresponding second slider 207.

[0074] Specifically, the base 32 is a square plate structure, located at the bottom of the enclosed adjustable housing 1. The track groove 321 is a square structure formed by four elongated slots, each slot being a parallelogram. The ends of adjacent track grooves 321 are located on either side of the center line of the base 32. The first slider 105 and the second slider 207, which are positioned opposite each other, are respectively embedded in their respective track grooves 321. The sliding pins at the lower ends of each first slider and second slider extend out of the track groove 321. Gear shafts 322 are provided at the center and around the perimeter of the base 32, with the gear shafts 322 around the perimeter of the base 32 located at the ends of adjacent track grooves 321.

[0075] The baffle drive gear 312 of the gear transmission mechanism is movably connected to the base 32 via a gear shaft. The baffle drive gear 312 has a double-layer gear structure, with the upper gear being smaller than the lower gear. The cross-shaped bracket 311 is composed of four intersecting strip plates. Each intersecting end of the strip plates has a through hole for the gear shaft 322 at the center of the base 32 to pass through. The center of the cross-shaped bracket 311 is sleeved on the gear shaft 322 at the upper end of the baffle drive gear 312. Each set of driven pinion 313 and driven gear 314 meshes to form a driven gear set. The driven pinion 313 and driven gear 314 are movably connected and fixed to the cross-shaped bracket 311. The outer ends of each driven pinion 313 and strip plate are sleeved on the gear shaft around the base 32. The hinge point of the crank and connecting rod of each crank-connecting rod mechanism is sleeved on the rotating shaft in the middle of the corresponding strip plate. The upper pinion of the baffle drive gear 312 meshes with the driven large gear 314 of each driven gear set for transmission. One end of the crank 3151 of each crank-connecting rod mechanism 315 is sleeved on the upper gear shaft of the driven pinion 313. One end of the connecting rod 3152 of a pair of opposing crank-connecting rod mechanisms is hinged to the slide post of the first slider 105, while one end of the connecting rod of another pair of opposing crank-connecting rod mechanisms is hinged to the slide post of the second slider 207.

[0076] When the baffle drive gear 312 rotates, it drives the driven gear set to move in sequence. The driven pinion 313 of the driven gear set drives the crank of the crank-connecting rod mechanism 315 to move. The connecting rod of the crank-connecting rod mechanism drives the corresponding sliding column on the first slider 105 or the second slider 207 to move synchronously along the track groove 321. Since the first sliding baffle 11 and the second sliding baffle 12 are limited by the first sliding hook 103 and the second sliding groove 205, and the second sliding hook 203 and the first sliding groove 104, and the triangular baffle 102 is limited by the baffle limiting groove 208, the crank-connecting rod mechanism drives the sliding column at the lower end of the pair of first sliding baffles 11 and second sliding baffles 12 to move along the track groove 321 to realize the size adjustment of the inner cavity of the adjustable housing 1.

[0077] Furthermore, the housing drive mechanism 3 also includes a housing 34 and a base plate 33. The housing 34 is disposed on the outer periphery of the base 32, surrounding the outer periphery of the adjustable housing 1 and the template orientation adjustment mechanism 4. The base plate 33 is disposed at the bottom of the housing, covering the gear transmission mechanism. The baffle drive gear 312 meshes with the baffle transmission gear 316 disposed on the base plate 33. The baffle transmission gear 316 is driven by meshing with the drive rack 317.

[0078] Specifically, to facilitate the movement of the baffle drive gear 312, the lower gear of the baffle drive gear 312 meshes with the baffle transmission gear 316. A base plate 33 is provided at the lower end of the baffle transmission gear 316, and the base plate 33 is arranged parallel to the base 32. A base plate gear shaft 331 is provided on the base plate 33, and the baffle transmission gear 316 is sleeved on the base plate gear shaft 331 of the base plate 33. One side of the baffle transmission gear 316 meshes with a drive rack 317. By moving the drive rack 317, the baffle transmission gear 316 is driven, which in turn drives the upper gear of the baffle drive gear 312 to rotate. The baffle transmission gear 316 and the drive rack 317 are movably connected and mounted on the base plate 33.

[0079] To protect the template orientation adjustment mechanism 4, a housing 34 is provided outside the housing drive mechanism 3. The housing 34 is a square shell. Horizontal slots 341 are provided on the two sides of the housing 34 adjacent to the template orientation adjustment mechanism 4 for observing the circumferential scale lines 411 on the coarse adjustment gear 404 and the fine adjustment gear 410. The housing 34 surrounds the adjustable housing 1 and the template orientation adjustment mechanism 4. The housing 34 is open at both ends; one end is connected and fixed to the base 32 and extends beyond the base 32, while the other end extends towards the upper end of the first sliding baffle 11 and the template orientation adjustment mechanism 4. The upper end of the housing 34 does not exceed the upper end of the template drive wheel 405 on the template orientation adjustment mechanism 4 to facilitate the adjustment of the template drive wheel 405. The gear transmission mechanism is located in the space inside the housing 34 at the lower end of the base 32, and the bottom plate 33 at the lower end of the base 32 closes the lower end of the housing 34. The bottom of the outer casing 34 on the base plate 33 is also provided with a window on one side. The slider 318 on the drive rack 317 extends out of the window on one side of the bottom of the outer casing. The movement of the drive rack 317 is achieved by manually moving the slider 318.

[0080] When using the experimental apparatus of the present invention:

[0081] First, place the experimental setup on a relatively flat surface. Slide the slider 318 on the bottom drive rack 317 of the side of the experimental setup, and observe the vertical scale line on the first sliding baffle 11 corresponding to the relative sliding of the second sliding baffle 12 and the first sliding baffle 11. Control the size of the inner cavity of the adjustable chamber 1; the trajectory of the change in the inner cavity of the adjustable chamber 1 is as follows: Figure 20 As shown in (a) and (b).

[0082] Second, turn on the electromagnet power supply on the template orientation adjustment mechanism 4, allowing both ends of the template 2 to adhere to the second sliding baffle 12. Adjust the position of the template orientation adjustment mechanism 4, first adjusting the coarse adjustment gear 404, then observing the reading on the circumferential scale line 411 on the fine adjustment gear 410, and finally adjusting the fine adjustment gear 410 to reach the preset angle, and then fixing the fine adjustment gear 410. At this time, the template 2 will also change position and orientation accordingly. After adjustment, apply a high-performance release agent to the inside of the adjustable housing 1.

[0083] Third, pour cement mortar into the inner cavity of the adjustable box 1, and read the cement mortar position on the scale line on the first sliding baffle 11 while pouring. Stop pouring cement mortar when it reaches the preset height.

[0084] Fourth, after the cement mortar strength is generated after 3 days of curing, the template 2 is removed from the cement mortar sample, cement mortar is injected into the precast crack, and after a certain period of curing, a weak layer is formed, and the sample can be taken out for testing.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An experimental apparatus for processing rock through-cracks using a magnetic template, comprising an adjustable box (1) and a box driving mechanism (3), wherein a template (2) is provided inside the adjustable box (1), characterized in that: The adjustable housing (1) includes a pair of opposing first sliding baffles (11) and a pair of opposing second sliding baffles (12). The pair of first sliding baffles (11) and the pair of second sliding baffles (12) enclose the adjustable housing (1) with one end open. The housing drive mechanism (3) is located at the lower part of the adjustable housing (1) and is hinged to the bottom of the first sliding baffles (11) and the second sliding baffles (12), respectively. The housing drive mechanism (3) adjusts the first sliding baffles (11) and the second sliding baffles (12). A sliding baffle (11) and a second sliding baffle (12) move relative to each other to control the size of the inner cavity of the adjustable box (1); a template orientation adjustment mechanism (4) is provided on the outside of the second sliding baffle (12); the template (2) is inserted into the inner wall of the pair of second sliding baffles (12) and magnetically connected to the template orientation adjustment mechanism (4); the template orientation adjustment mechanism (4) moves along the second sliding baffle (12) to control the orientation angle of the template (2) in the adjustable box (1); The template (2) is a flexible board, and aluminum foil (22) is embedded at both ends of the template (2). The aluminum foil (22) is pasted on the inner side of the second sliding baffle (12). Magnetic powder (21) is sandwiched inside the aluminum foil (22). The amount of magnetic powder (21) in the aluminum foil (22) at both ends of the template (2) is greater than the amount of magnetic powder (21) in the aluminum foil (22) pasted on the second sliding baffle (12). The first sliding baffle (11) includes a triangular baffle (102) and a square baffle (101), and the second sliding baffle (12) includes a square clamping plate (201), wherein a grooved rod cavity (204) is provided in the square clamping plate (201) through its upper end face; The template orientation adjustment mechanism (4) includes a module moving groove rod (401), an adjustment shaft (402) is provided in the middle of the module moving groove rod (401), the module moving groove rod (401) is vertically embedded in the groove rod cavity (204) of the square clamp plate (201), a limiting slot (202) is opened in the middle of the outer plate surface of the square clamp plate (201), the adjustment shaft (402) passes through the limiting slot (202) and extends out of the outer side of the square clamp plate (201), the template (2) and the square clamp plate (201) are provided with magnetic powder (21) at opposite ends, and a magnet (403) is provided in the module moving groove rod (401). Rotating the adjustment shaft (402) causes the magnet (403) to drive the magnetic powder (21) to move the template (2) relative to each other.

2. The experimental apparatus for processing rock through-fissures using a magnetic template as described in claim 1, characterized in that: The triangular baffle (102) and the square baffle (101) are connected to form an L-shaped structure. The triangular baffles (102) of a pair of first sliding baffles (11) are fitted together to form the bottom of the adjustable box (1). The square baffles (101) of a pair of first sliding baffles (11) are arranged opposite each other to form a pair of boxes of the adjustable box (1). The square baffles (201) of a pair of second sliding baffles (12) are arranged opposite each other to form another pair of boxes of the adjustable box (1).

3. The experimental apparatus for processing rock through-fissures using a magnetic template as described in claim 2, characterized in that: The upper surface of the square baffle (101) is provided with a first sliding groove (104), and one side of the upper surface of the square baffle (101) is also provided with a first sliding hook (103) protruding outward. The first sliding hook (103) is arranged side by side with the first sliding groove (104). The lower surface of the square baffle (101) is provided with a first slider (105). The upper surface of the square clamping plate (201) on one side of the upper end of the grooved rod cavity (204) is provided with a second sliding groove (205). The second sliding groove (205) is arranged side by side with the upper end of the grooved rod cavity (204). The lower surface of the square clamping plate (201) is provided with a second slider (207). One side of the square clamping plate (201) is provided with a roller (206). 06) A second sliding hook (203) protruding outward is provided on the upper surface of the opposite square clamp (201). The second sliding hook (203) is located at the end of the second sliding groove (205). The lower end of the square clamp (201) is provided with a baffle limiting groove (208) for accommodating the sliding of the triangular baffle (102). When the first sliding hook (103) is embedded in the corresponding second sliding groove (205) and moves along the second sliding groove (205), and when the second sliding hook (203) is embedded in the corresponding first sliding groove (104) and moves along the first sliding groove (104), and when the triangular baffle (102) is embedded in the corresponding baffle limiting groove (208) and moves, the size of the inner cavity of the adjustable box is controlled.

4. The experimental apparatus for processing rock through-fissures using a magnetic template as described in claim 3, characterized in that: The housing drive mechanism (3) includes a base (32), on which a track groove (321) is provided. The first slider (105) and the second slider (207) are respectively embedded in the corresponding track groove (321). A gear transmission mechanism is provided at the lower part of the base (32). The gear transmission mechanism includes a cross-shaped bracket (311). A baffle drive gear (312) is provided at the center of the lower end of the cross-shaped bracket (311). A set of meshing gears is provided around the lower end of the cross-shaped bracket (311). Driven pinion (313) and driven gear (314), the baffle drive gear (312) meshes with the driven gear (314) for transmission; each driven pinion (313) is hinged to a crank connecting rod mechanism (315) located at the upper end of the cross-shaped bracket (311), one end of one pair of crank connecting rod mechanisms (315) is hinged to the corresponding first slider (105), and one end of the other pair of crank connecting rod mechanisms (315) is hinged to the corresponding second slider (207).

5. The experimental apparatus for processing rock through-fissures using a magnetic template according to claim 4, characterized in that: The housing drive mechanism (3) further includes a housing (34) and a base plate (33). The housing (34) is disposed on the outer periphery of the base (32) and surrounds the adjustable housing and template orientation adjustment mechanism (4). The base plate (33) is disposed at the bottom of the housing (34) and covers the gear transmission mechanism. The baffle drive gear (312) is meshed with a baffle transmission gear (316) disposed on the base plate (33). The baffle transmission gear (316) is driven by meshing with a rack (317).

6. The experimental apparatus for processing rock through-fissures using a magnetic template according to claim 1, characterized in that: The template orientation adjustment mechanism (4) further includes a coarse adjustment gear (404) and a template drive wheel (405). The coarse adjustment gear (404) is sleeved on the end of the adjustment shaft (402). A template transmission gear (406) meshes on the coarse adjustment gear (404). The template transmission gear (406) is driven and connected to the template drive wheel (405) through a toothed chain (407). The template drive wheel (405) is located on the upper outer periphery of the second sliding baffle (12). The template drive wheel (405) and the template transmission gear (406) are fixed on a gear housing (408).

7. The experimental apparatus for processing rock through-fissures using a magnetic template as described in claim 6, characterized in that: A fine-tuning gear (410) is sleeved on the adjusting shaft (402). The fine-tuning gear (410) is provided with a circumferential scale line (411). A stop rod (412) is provided in the gear housing (408) located at the upper end of the fine-tuning gear (410). An arc-shaped rack (413) and a probe are provided at the lower end of the stop rod (412). A spring (415) is sleeved on the stop rod (412). The stop rod (412) is supported and limited in the gear housing (408) by the spring (415). The stop rod (412) extends under the action of the spring (415) so that the arc-shaped rack (413) meshes with the fine-tuning gear (410) and is limited, and the probe points to the circumferential scale line (411).

8. The experimental apparatus for processing rock through-fissures using a magnetic template according to claim 7, characterized in that: The adjusting shaft (402) is fitted with a movable slider (409), which is embedded in the limiting slot (202) and moves along the limiting slot (202) to drive the module moving groove rod (401) to move in the groove rod cavity (204).

Images