A kind of test device for model piles of similar materials in goaf

Abstract

The present invention discloses a goaf similar material model pile test device, which relates to the technical field of model pile tests. The present invention includes a model box assembly, a front baffle assembly, a gantry frame assembly, a specimen assembly and a pulley group assembly; the front baffle assembly is located on the model box assembly and the two are fixedly connected by fixing bolts; the gantry frame assembly is located on the top of the model box assembly and the two are slidably matched; the specimen assembly is located at the bottom of the gantry frame assembly and the two are fixedly connected by fixing bolts; the pulley group assembly is located on the top of the front baffle assembly and the two are slidably matched. By rotating the bidirectional lead screw of the present invention, the moving plate together with the sliding plate and the long plate strip move. When the moving plate together with the sliding plate and the long plate strip move, the telescopic rod is started, so that the sliding rollers on the long plate strip contact the semi-circular arc surface of the pile, realizing the support for the semi-circular arc pile to be measured with different diameters and preventing the semi-circular arc pile to be measured from tilting during the test.

Description

Technical Field

[0001] The invention belongs to the technical field of model pile tests, and particularly relates to a model pile test device for a goaf similar material. Background Technique

[0002] The goaf similar material model pile test is mainly used to simulate the test process of changes in rock and soil layers such as rock and soil mining, tunnel excavation, mineral mining, non-ferrous metal mining, and coal mining; through a loading jack, a simulation test of rock and soil stress can be realized; during the test process, various complex rock and soil environments can be simulated by filling different similar materials; the front large-area observation window can better observe and record various changes during the test process; adopting the self-balanced design concept, no reaction force trough is required during installation.

[0003] When it is necessary to test the semi-circular pile to be measured during the test process, since the diameters of the semi-circular piles to be measured are different, therefore, it is necessary to carry out a certain clamping and support to prevent it from tilting to a certain extent during the test process and affecting its final test results, which increases the working time of the test personnel; in addition, when the test personnel need to carry out a similar material model pile test, for the existing similar material model pile test device, its installation and removal processes are relatively cumbersome, bringing different degrees of trouble to the test personnel, increasing the working degree of the test personnel, and not having a certain simplicity and versatility in test operation. For this reason, we designed a model pile test device for a goaf similar material to solve the problems mentioned above. Summary of the Invention

[0004] The purpose of the invention is to provide a model pile test device for a goaf similar material, which solves the problems that the existing test process cannot meet the support test of semi-circular piles to be measured with different diameters, increases the working time of the test personnel, and the installation and removal processes are cumbersome, bringing different degrees of trouble to the test personnel, increasing the working degree of the test personnel, and not having a certain simplicity and versatility in test operation through the model box assembly, the front baffle assembly, the gantry frame assembly, the specimen assembly and the pulley block assembly.

[0005] To solve the above technical problems, the invention is realized through the following technical solutions:

[0006] The invention is a model pile test device for a goaf similar material, including a model box assembly, a front baffle assembly, a gantry frame assembly, a specimen assembly and a pulley block assembly; the front baffle assembly is located on the model box assembly and is fixedly connected between the two through fixing bolts; the gantry frame assembly is located on the top of the model box assembly and is slidably matched between the two; the specimen assembly is located at the bottom of the gantry frame assembly and is fixedly connected between the two through fixing bolts; the pulley block assembly is located on the top of the front baffle assembly and is slidably matched between the two.

[0007] The pulley block assembly includes a sliding frame; two symmetrical limiting rotating plates are fixed to the top of the sliding frame; two symmetrical limiting rotating plates are fixed to the inner top of the bottom of the sliding frame; two sliding rods are symmetrically fixed between the two limiting rotating plates; a bidirectional lead screw is rotatably fitted in a threaded manner between the two limiting rotating plates; two symmetrical moving plates are threadedly rotatably connected to the circumferential side of the bidirectional lead screw; a sliding plate is slidably fitted to the top of the moving plate; a telescopic rod is connected to the same side of the sliding plate and the moving plate; a long plate bar is fixed to the other side of the sliding plate; a sliding roller is rotatably fitted to one side surface of the long plate bar.

[0008] Further, the model box assembly includes a workbench plate; a plurality of fixed columns are fixed to the top of the workbench plate; two symmetrical first modular side baffles are connected to the top of the workbench plate; two symmetrical second modular side baffles are symmetrically connected to the top of the workbench plate; the bottom of the first modular side baffle is clamped with the fixed column and the two are threadedly connected by a nut; the bottom of the second modular side baffle is clamped with the fixed column and the two are threadedly connected by a nut; the second modular side baffle and the first modular side baffle are fixedly connected by a fixing bolt.

[0009] Further, a modular rear baffle is slidably connected between two symmetrical first modular side baffles on the top of the workbench plate; the modular rear baffle is a detachable module; two sliding tracks are symmetrically fixed to the top of the first modular side baffle.

[0010] Further, the front baffle assembly includes a net-covered front baffle frame; high-strength tempered glass is arranged inside the net-covered front baffle frame; a plurality of first fixing holes are opened at the top of the net-covered front baffle frame.

[0011] Further, the gantry frame assembly includes two symmetrical columns; cross beams are slidably fitted to opposite side surfaces of the columns; the cross beams and the columns are fixedly connected by fixing bolts.

[0012] Further, a first support plate is slidably fitted to the top of the two cross beams; a second support plate is slidably fitted to the bottom of the two cross beams; a jack is fixedly penetrated through the first support plate and the second support plate; a high-precision wheel spoke sensor is fixed to the bottom of the jack; a first flange is fixed to the bottom of the high-precision wheel spoke sensor; the first support plate and the second support plate are connected by a fixing bolt.

[0013] Further, sliding grooves are symmetrically opened at the bottoms of the two columns; the sliding grooves are slidably connected with the sliding tracks; the bottoms of the columns and the tops of the first modular side baffles are connected by fixing bolts.

[0014] Furthermore, the specimen assembly includes a fixed second flange; a semi-circular pile is fixed to the bottom of the second flange; and a small force sensor is connected to one end of the semi-circular pile.

[0015] Furthermore, a plurality of second fixing holes are formed in the bottom of the sliding frame; a driving motor is fixed to one side of the sliding frame; a driving gear is fixed to the output shaft of the driving motor; a driven gear is fixed to one end of the bidirectional lead screw; the driven gear meshes with the driving gear; and the second fixing holes and the first fixing holes are fixedly connected by fixing bolts.

[0016] The present invention has the following beneficial effects:

[0017] 1. By starting the driving motor of the present invention, when the bidirectional lead screw rotates, it drives the moving plate together with the sliding plate and the long strip to move. When the moving plate together with the sliding plate and the long strip move, the telescopic rod is started to make the moving plate move, and finally the sliding roller on the long strip contacts the arc surface of the semi-circular pile, realizing the support for semi-circular piles to be tested with different diameters and preventing the semi-circular piles to be tested from tilting during the test.

[0018] 2. By setting the model box assembly, the front baffle assembly, the gantry frame assembly, the specimen assembly and the pulley group assembly, the present invention realizes and ensures the simplicity and versatility of the test operation, and facilitates the disassembly and installation of the test device.

[0019] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of a gob similar material model pile test device of the present invention.

[0022] Figure 2 It is a front view of a gob similar material model pile test device of the present invention.

[0023] Figure 3 It is a schematic structural diagram of the model box assembly.

[0024] Figure 4 It is a schematic structural diagram of the front baffle assembly.

[0025] Figure 5It is a structural schematic diagram of the gantry frame assembly.

[0026] Figure 6 Schematic diagram of the structure of the sample assembly.

[0027] Figure 7 It is a structural schematic diagram of the pulley assembly.

[0028] Figure 8 for Figure 7 A magnified schematic diagram of center A.

[0029] Figure 9 for Figure 7 A magnified schematic diagram of point B in the middle.

[0030] Figure 10 for Figure 7 Enlarged schematic diagram of point C in the middle.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1-model box assembly, 2-front baffle assembly, 3-gantry frame assembly, 4-sample assembly, 5-pulley assembly, 101-workbench plate, 102-fixed column, 103-first modular side baffle, 104-second modular side baffle, 105-modular rear baffle, 106-sliding track, 201-net front baffle frame, 202-high-strength tempered glass, 203-first fixing hole, 301-column, 302-beam, 303-first support plate, 304-second support plate, 305-ton Top, 306-high-precision spoke sensor, 307-first flange, 308-sliding groove, 401-second flange, 402-semicircular arc pile, 403-small force sensor, 501-sliding frame, 502-limited rotating plate, 503-sliding rod, 504-bidirectional screw, 505-moving plate, 506-sliding plate, 507-telescopic rod, 508-long board, 509-sliding roller, 510-second fixing hole, 511-driving motor, 512-driving gear, 513-driven gear. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figures 1-10As shown in the figure, the present invention is a goaf similar material model pile test device, including a model box assembly 1, a front baffle assembly 2, a gantry frame assembly 3, a specimen assembly 4 and a pulley block assembly 5; the front baffle assembly 2 is located on the model box assembly 1 and is fixedly connected between them through fixing bolts; the gantry frame assembly 3 is located on the top of the model box assembly 1 and is slidably matched between them; the specimen assembly 4 is located at the bottom of the gantry frame assembly 3 and is fixedly connected between them through fixing bolts; the pulley block assembly 5 is located on the top of the front baffle assembly 2 and is slidably matched between them;

[0035] The pulley block assembly 5 includes a sliding frame 501; two symmetric limiting rotating plates 502 are fixedly arranged on the top of the sliding frame 501; two symmetric limiting rotating plates 502 are fixedly arranged on the inner top of the bottom of the sliding frame 501; two sliding rods 503 are symmetrically fixed between the two limiting rotating plates 502; a bidirectional lead screw 504 is rotationally and threadedly matched through the two limiting rotating plates 502; two symmetric moving plates 505 are rotationally and threadedly connected to the circumferential side of the bidirectional lead screw 504; a sliding plate 506 is slidably matched on the top of the moving plate 505; a telescopic rod 507 is connected to the same side of the sliding plate 506 and the moving plate 505; a long plate strip 508 is fixedly arranged on the other side of the sliding plate 506; a sliding roller 509 is rotationally matched on one side surface of the long plate strip 508; when it is necessary to test the semi-circular pile 402 to be measured, adjust the two cross beams 302 slidably matched on the opposite side surfaces of the column 301 to the top of the column 301, and then fix them at the top of the gantry frame assembly 3 through fixing bolts. Fix the second fixing hole 510 and the first fixing hole 203 through fixing bolts, so that the front baffle assembly 2 is connected to the front baffle assembly 2. Start the driving motor 511. Since the driven gear 513 meshes with the driving gear 512, when the bidirectional lead screw 504 rotates, it will drive the moving plate 505 together with the sliding plate 506 and the long plate strip 508 to move. When the moving plate 505 together with the sliding plate 506 and the long plate strip 508 move, start the telescopic rod 507 to make the moving plate 505 move, and finally make the sliding roller 509 on the long plate strip 508 contact the arc surface of the semi-circular pile 402. Start the jack 305, so that the test data is transmitted into the computer software through the small force value sensor 403 connected to one end of the semi-circular pile 402 and stored, realizing the support for the semi-circular pile 402 to be measured with different diameters and preventing the inclination of the semi-circular pile 402 to be measured during the test.

[0036] Among them, the model box assembly 1 includes a workbench plate 101; a number of fixed columns 102 are fixed on the top of the workbench plate 101; two symmetrical first modular side baffles 103 are connected to the top of the workbench plate 101; two symmetrical second modular side baffles 104 are symmetrically connected to the top of the workbench plate 101; the bottom of the first modular side baffle 103 is clamped with the fixed column 102 and the two are connected by a nut in a threaded manner; the bottom of the second modular side baffle 104 is clamped with the fixed column 102 and the two are connected by a nut in a threaded manner; the second modular side baffle 104 and the first modular side baffle 103 are fixedly connected by a fixing bolt; connecting the bottom of the first modular side baffle 103 with the fixed column 102 by a nut in a threaded manner, connecting the bottom of the second modular side baffle 104 with the fixed column 102 by a nut in a threaded manner, and fixedly connecting the second modular side baffle 104 and the first modular side baffle 103 by a fixing bolt, so that the model box assembly 1 forms a box-like structure, which is convenient for the experiment and simulates the experimental processes of changes in rock and soil layers such as rock and soil mining, tunnel excavation, mineral mining, non-ferrous metal mining, and coal mining.

[0037] Among them, a modular rear baffle 105 is slidably connected between the two symmetrical first modular side baffles 103 on the top of the workbench plate 101; the modular rear baffle 105 is a detachable module; two sliding tracks 106 are symmetrically fixed on the top of the first modular side baffle 103; by moving the modular rear baffle 105, the testable area of the model box assembly 1 can be changed according to different model pile specimens to be tested.

[0038] Among them, the front baffle assembly 2 includes a net-covered front baffle frame 201; a high-strength tempered glass 202 is arranged inside the net-covered front baffle frame 201; a number of first fixing holes 203 are opened on the top of the net-covered front baffle frame 201; when the experiment is in progress, the experimenter can conveniently observe the situation of the model pile specimen to be tested in the model box assembly 1 through the high-strength tempered glass 202.

[0039] Among them, the gantry frame assembly 3 includes two symmetrical columns 301; cross beams 302 are slidably fitted on the opposite side surfaces of the columns 301; the cross beams 302 and the columns 301 are fixedly connected by fixing bolts; by adjusting the two cross beams 302 slidably fitted on the opposite side surfaces of the columns 301, the adjusted two cross beams 302 are fixed in the gantry frame assembly 3 by fixing bolts.

[0040] Among them, a first support plate 303 is slidably fitted on the tops of the two cross beams 302; a second support plate 304 is slidably fitted on the bottoms of the two cross beams 302; a jack 305 is fixedly penetrated through the first support plate 303 and the second support plate 304; a high-precision spoke sensor 306 is fixed to the bottom of the jack 305; a first flange 307 is fixed to the bottom of the high-precision spoke sensor 306; the first support plate 303 and the second support plate 304 are connected by fixing bolts; the first support plate 303 and the second support plate 304 are moved to corresponding positions on the cross beam 302, and the first support plate 303 and the second support plate 304 are connected to the gantry frame assembly 3 by fixing bolts. When a similar material model pile test is carried out, the sample assembly 4 is removed from the gantry frame assembly 3, and the jack 305 is started, so that the test data is transmitted into the computer software through the high-precision spoke sensor 306 for storage.

[0041] Among them, sliding grooves 308 are symmetrically formed at the bottoms of the two columns 301; the sliding grooves 308 are slidably connected with the sliding tracks 106; the bottoms of the columns 301 and the tops of the first modular side baffles 103 are connected by fixing bolts; through the sliding connection between the sliding grooves 308 and the sliding tracks 106, the gantry frame assembly 3 slides on the model box assembly 1. When it slides to the corresponding position, the gantry frame assembly 3 is fixed to the model box assembly 1 by fixing bolts to prevent the gantry frame assembly 3 from tilting during the test.

[0042] Among them, the sample assembly 4 includes a fixed second flange 401; a semi-circular pile 402 is fixed to the bottom of the second flange 401; a small force value sensor 403 is connected to one end of the semi-circular pile 402; the second flange 401 and the first flange 307 are fixed by fixing bolts, so that the sample assembly 4 is connected to the front baffle assembly 2.

[0043] Among them, a plurality of second fixing holes 510 are formed at the bottom of the sliding frame 501; a driving motor 511 is fixed to one side of the sliding frame 501; a driving gear 512 is fixed to the output shaft of the driving motor 511; a driven gear 513 is fixed to one end of the bidirectional lead screw 504; the driven gear 513 is meshed with the driving gear 512; the second fixing holes 510 and the first fixing holes 203 are fixedly connected by fixing bolts; the second fixing holes 510 and the first fixing holes 203 are fixedly connected by fixing bolts, so that the pulley group assembly 5 is connected to the front baffle assembly 2. When the driving motor 511 is started, because the driven gear 513 is meshed with the driving gear 512, when the bidirectional lead screw 504 rotates, it will drive the moving plate 505 together with the sliding plate 506 and the long plate strip 508 to move, so that the sliding rollers 509 on the long plate strip 508 are in contact with the arc surface of the semi-circular pile 402, preventing the semi-circular pile 402 to be measured from tilting during the test.

[0044] A specific application of this embodiment is:

[0045] When it is necessary to test the semi-circular pile 402 to be measured, adjust the two cross beams 302 that are slidably fitted to the opposite sides of the column 301 to the uppermost position of the column 301, and then fix them to the uppermost part of the gantry frame assembly 3 through the fixing bolts. Start the driving motor 511. Since the driven gear 513 meshes with the driving gear 512, when the bidirectional lead screw 504 rotates, it will drive the moving plate 505 together with the sliding plate 506 and the long plate strip 508 to move. When the moving plate 505 together with the sliding plate 506 and the long plate strip 508 move, start the telescopic rod 507 to make the moving plate 505 move, and finally make the sliding roller 509 on the long plate strip 508 contact the arc surface of the semi-circular pile 402. Start the jack 305 to make the test data be transmitted into the computer software for storage through the small force value sensor 403 connected to one end of the semi-circular pile 402. In addition, when conducting the test on the similar material model pile, remove the sample assembly 4 from the gantry frame assembly 3, start the jack 305 to make the test data be transmitted into the computer software for storage through the high-precision spoke sensor 306, which realizes the support for the semi-circular pile 402 to be measured with different diameters and prevents the inclination of the semi-circular pile 402 to be measured during the test.

[0046] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0047] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not elaborate all the details, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A similar material model pile test device based on a goaf, characterized in that: It includes a model box assembly (1), a front baffle assembly (2), a gantry frame assembly (3), a specimen assembly (4) and a pulley group assembly (5); the front baffle assembly (2) is located on the model box assembly (1) and the two are fixedly connected by fixing bolts; the gantry frame assembly (3) is located on the top of the model box assembly (1) and the two are slidably matched; the specimen assembly (4) is located at the bottom of the gantry frame assembly (3) and the two are fixedly connected by fixing bolts; the pulley group assembly (5) is located on the top of the front baffle assembly (2) and the two are slidably matched; The front baffle assembly (2) includes a net - sleeved front baffle frame (201), and a plurality of first fixing holes (203) are opened at the top of the net - sleeved front baffle frame (201); The pulley group assembly (5) includes a sliding frame (501); two symmetrical limiting rotating plates (502) are fixed at the top of the sliding frame (501); two symmetrical limiting rotating plates (502) are fixed at the inner top of the bottom of the sliding frame (501); two sliding rods (503) are symmetrically fixed between the two limiting rotating plates (502); a bidirectional lead screw (504) is rotatably fitted through the two limiting rotating plates (502) in a threaded manner; two symmetrical moving plates (505) are threadedly rotatably connected to the circumferential side of the bidirectional lead screw (504); a sliding plate (506) is slidably fitted on the top of the moving plate (505); a telescopic rod (507) is connected to the same side of the sliding plate (506) and the moving plate (505); a long plate bar (508) is fixed on the other side of the sliding plate (506); a sliding roller (509) is rotatably fitted on one side surface of the long plate bar (508); A plurality of second fixing holes (510) are opened at the bottom of the sliding frame (501); a driving motor (511) is fixed on one side of the sliding frame (501); a driving gear (512) is fixed on the output shaft of the driving motor (511); a driven gear (513) is fixed at one end of the bidirectional lead screw (504); the driven gear (513) is meshed with the driving gear (512); the second fixing holes (510) and the first fixing holes (203) are fixedly connected by fixing bolts.

2. The test device for model piles of similar materials in a goaf according to claim 1, characterized in that The model box assembly (1) includes a workbench plate (101); a plurality of fixing columns (102) are fixed on the top of the workbench plate (101); two symmetrical first modular side baffles (103) are connected to the top of the workbench plate (101); two symmetrical second modular side baffles (104) are symmetrically connected to the top of the workbench plate (101); the bottom of the first modular side baffle (103) is clamped with the fixing column (102) and the two are threadedly connected by nuts; the bottom of the second modular side baffle (104) is clamped with the fixing column (102) and the two are threadedly connected by nuts; the second modular side baffle (104) and the first modular side baffle (103) are fixedly connected by fixing bolts.

3. The test device for model piles of gob similar materials according to claim 2 is characterized in that, A modular rear baffle (105) is slidably connected between two symmetric first modular side baffles (103) at the top of the workbench plate (101); the modular rear baffle (105) is a detachable module; two sliding tracks (106) are symmetrically fixed at the top of the first modular side baffles (103).

4. The apparatus for testing model piles of goaf similar materials according to claim 3, wherein, A high-strength tempered glass (202) is arranged inside the netting front baffle frame (201).

5. The test device for a gob-similar material model pile according to claim 4, characterized in that The gantry frame assembly (3) includes two symmetric columns (301); cross beams (302) are slidably fitted on opposite side surfaces of the columns (301); the cross beams (302) and the columns (301) are fixedly connected by fixing bolts.

6. The test device for model piles of gob similar materials according to claim 5, characterized in that, A first support plate (303) is slidably fitted on the tops of the two cross beams (302); a second support plate (304) is slidably fitted on the bottoms of the two cross beams (302); a jack (305) is fixedly installed through the first support plate (303) and the second support plate (304); a high-precision wheel spoke sensor (306) is fixed at the bottom of the jack (305); a first flange (307) is fixed at the bottom of the high-precision wheel spoke sensor (306); the first support plate (303) and the second support plate (304) are connected by fixing bolts.

7. The test device for model piles of gob-similar materials according to claim 6, characterized in that, Sliding grooves (308) are symmetrically formed at the bottoms of the two columns (301); the sliding grooves (308) are slidably connected with the sliding tracks (106); the bottoms of the columns (301) and the tops of the first modular side baffles (103) are connected by fixing bolts.

8. The apparatus for testing model piles made of similar materials in a goaf according to claim 7, wherein, The specimen assembly (4) includes a fixed second flange (401); a semi-circular pile (402) is fixed at the bottom of the second flange (401); a small force value sensor (403) is connected to one end of the semi-circular pile (402).

Images