CA3171806A1 - An auxiliary device and a method for making a 3d printed tunnel model - Google Patents
An auxiliary device and a method for making a 3d printed tunnel modelInfo
- Publication number
- CA3171806A1 CA3171806A1 CA3171806A CA3171806A CA3171806A1 CA 3171806 A1 CA3171806 A1 CA 3171806A1 CA 3171806 A CA3171806 A CA 3171806A CA 3171806 A CA3171806 A CA 3171806A CA 3171806 A1 CA3171806 A1 CA 3171806A1
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- printed
- anchor
- auxiliary device
- main rod
- making
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000003780 insertion Methods 0.000 claims abstract description 19
- 230000037431 insertion Effects 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims description 20
- 239000011159 matrix material Substances 0.000 claims description 19
- 239000011435 rock Substances 0.000 claims description 16
- 238000010146 3D printing Methods 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000003825 pressing Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000013170 computed tomography imaging Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
Abstract
Disclosed is an auxiliary device for making a 3D printed tunnel model. The auxiliary device includes a main rod and an anchor insertion mechanism extendable into a tunnel opening of a physical model. The anchor insertion mechanism comprises a feed assembly comprising a fixed member on the main rod and a rotating member, and a power assembly installed on the main rod and configured to drive the rotating member. A surface of an anchor rod is defined with a slot in an axial direction; the rotating member is threadedly connected with the anchor rod; the fixed member is provided with a perforation coaxial with a screw hole on the rotating member for the anchor rod to pass through. The fixed member comprises a limiting ridge cooperating with the slot to limit the circumferential rotation of the anchor rod. A method of using the auxiliary device is also provided.
Description
PRINTED TUNNEL MODEL
FIELD OF THE INVENTION
[0001] The present application relates to the technical field of geotechnical engineering testing, and in particular, to an auxiliary device and a method for making a 3D printed tunnel model.
DESCRIPTION OF RELATED ART
FIELD OF THE INVENTION
[0001] The present application relates to the technical field of geotechnical engineering testing, and in particular, to an auxiliary device and a method for making a 3D printed tunnel model.
DESCRIPTION OF RELATED ART
[0002] Rock masses often contain complex internal structural features, such as criss-crossing joint fissures, and holes of different shapes and sizes. These defects directly affect the deformation and strength of the entire rock mass, and are directly related to the stability of rock mass engineering. Indoor physical model experiments are traditionally used in order to study the macro-mechanical properties and deformation failure characteristics of rock masses containing artificial structures. However, in the process of numerical simulation of traditional indoor physical simulation experiments, the complex engineering rock mass structure is often simplified, resulting in a large deviation between the model and the real rock mass.
[0003] With the development of 3D printing technology, researchers have printed a model having same internal void characteristics as sandstone from plastics by adopting the combination of CT imaging technology and 3D printing technology. However, the materials of plastic and rock mass are very different, resulting in the experimental simulation data being less consistent with the actual project. Later, the researchers used gypsum to replace plastics, and printed a physical model of the gypsum material for testing, and the effect was greatly improved.
[0004] In the above related technologies, there exists the following defects:
as to the physical model in the form of a tunnel, the tunnel opening is small after 3D printing, and the human hand cannot reach into the tunnel opening to insert the anchor rod, so the model without anchor rod is Date Regue/Date Received 2022-09-02 tested. However, there is anchor rod for supporting in the actual project, so there is still a deviation between the simulated data and the actual situation of the project.
BRIEF SUMMARY OF THE INVENTION
as to the physical model in the form of a tunnel, the tunnel opening is small after 3D printing, and the human hand cannot reach into the tunnel opening to insert the anchor rod, so the model without anchor rod is Date Regue/Date Received 2022-09-02 tested. However, there is anchor rod for supporting in the actual project, so there is still a deviation between the simulated data and the actual situation of the project.
BRIEF SUMMARY OF THE INVENTION
[0005] In order to solve the problem that the simulation data of the 3D
printed rock mass physical model test is less consistent with the actual project, the present application provides an auxiliary device and a method for making a 3D printed tunnel model.
printed rock mass physical model test is less consistent with the actual project, the present application provides an auxiliary device and a method for making a 3D printed tunnel model.
[0006] In the first aspect, the present application provides an auxiliary device for making a 3D
printed tunnel model by adopting the following technical solutions:
An auxiliary device for making a 3D printed tunnel model, including a main rod and an anchor insertion mechanism that can extend into a tunnel opening of a physical model, wherein the anchor insertion mechanism comprises a feed assembly and a power assembly installed on the main rod; the feed assembly comprises a fixed member fixed on the main rod and a rotating member rotatably arranged; the power assembly is configured to drive the rotating member to rotate; a surface of an anchor rod is defined with a slot in an axial direction; the rotating member is in threaded connection with the anchor rod; the fixed member is provided with a perforation for the anchor rod to pass through; the perforation is coaxial with a screw hole on the rotating member; and the fixed member is provided with a limiting ridge cooperating with the slot in the anchor rod to limit the circumferential rotation of the anchor rod.
printed tunnel model by adopting the following technical solutions:
An auxiliary device for making a 3D printed tunnel model, including a main rod and an anchor insertion mechanism that can extend into a tunnel opening of a physical model, wherein the anchor insertion mechanism comprises a feed assembly and a power assembly installed on the main rod; the feed assembly comprises a fixed member fixed on the main rod and a rotating member rotatably arranged; the power assembly is configured to drive the rotating member to rotate; a surface of an anchor rod is defined with a slot in an axial direction; the rotating member is in threaded connection with the anchor rod; the fixed member is provided with a perforation for the anchor rod to pass through; the perforation is coaxial with a screw hole on the rotating member; and the fixed member is provided with a limiting ridge cooperating with the slot in the anchor rod to limit the circumferential rotation of the anchor rod.
[0007] By adopting the above technical solution, the anchor rod is firstly passed through the perforation of the fixed member outside the physical model, so that the slot in the anchor rod is aligned with the limiting ridge in the fixed member, and an end of the anchor rod extends into the rotating member; the end of the anchor rod to be flush with the end of the perforation of fixed member or to protrude a small section by rotating the rotating member. Then, the feed assembly and the anchor rod are inserted into the tunnel opening of the physical model via the main rod.
When the anchor rod is moved to align with the anchor hole in the physical model, the rotating Date Regue/Date Received 2022-09-02 member is driven to rotate by the power assembly. Due to the screwed connection between the anchor rod and the rotating member, and the circumferential rotation of the anchor rod is restricted by the limiting ridge, so that the anchor rod is directionally moved along the perforation axis and inserted into the anchor hole of the physical model.
When the anchor rod is moved to align with the anchor hole in the physical model, the rotating Date Regue/Date Received 2022-09-02 member is driven to rotate by the power assembly. Due to the screwed connection between the anchor rod and the rotating member, and the circumferential rotation of the anchor rod is restricted by the limiting ridge, so that the anchor rod is directionally moved along the perforation axis and inserted into the anchor hole of the physical model.
[0008] Alternatively, a surface of the main rod is provided with a scale along a length direction of the main rod.
[0009] By adopting the above technical solution, when the feed assembly is inserted into the tunnel opening via the main rod, the position of the insertion can be judged according to the scale on the main rod. The anchor rod can be inserted into the anchor hole position conveniently and quickly according to the preset position data of the anchor hole in the physical model during 3D modeling.
[0010] Alternatively, the auxiliary device for making a 3D printed model further includes a support mechanism; the support mechanism includes a base and a bracket; the bracket is configured to slide up and down relative to the base and be fixed at a position; and the main rod is supported on the bracket and slides along a length direction of the main rod relative to the bracket.
[0011] By adopting the above technical solution, the main rod is supported on the bracket, so the shaking of the main rod is reduced during moving, which is beneficial to the alignment of the anchor rod with the anchor hole of the physical model. In the process of inserting the anchor rod into the anchor hole, the possibility of new fissures caused by the shaking of the main rod when inserting the anchor rod is reduced.
[0012] Alternatively, the bracket includes an arc-shaped part matching with an outline of the tunnel opening of the physical model; the arc-shaped part is provided with a mounting seat configured to slide along an arc surface of the arc-shaped part and be fixed at a position; the main rod is snap connected with the mounting seat; the arc-shaped part is provided with an angle Date Regue/Date Received 2022-09-02 scale; the mounting seat is provided with a pointer; and a direction of the pointer is parallel to an axis of the perforation in the fixed member.
[0013] By adopting the above technical solution, since the axial angle of each anchor hole is known during 3D modeling, the axis direction of the anchor rod can be judged by the pointer when the main rod slides along the arc-shaped part with the mounting seat, so that the anchor rod may be aligned with the anchor hole conveniently and quickly.
[0014] Alternatively, the arc-shaped part has a rectangular cross-section, and is defined with a sliding groove on an outer arc surface; a elongated slot in communication with the sliding groove along the circumferential direction is formed in an end surface of the arc-shaped part; the mounting seat is configured to slide relative to the sliding groove; the mounting seat is fixed with a threaded post extending out of the elongated slot; and the threaded post is in thread connection with a nut.
[0015] By adopting the above technical solution, the mounting seat can slide along the sliding groove after the nut is loosened; the threaded post moves in the corresponding elongated slot;
and the nut is tightened when the mounting seat position meets the requirements. The operation is simple and convenient.
and the nut is tightened when the mounting seat position meets the requirements. The operation is simple and convenient.
[0016] Alternatively, a guide groove is formed in a surface of the main rod along the length direction of the main rod, and the mounting seat is fixedly provided with a guide block cooperating with the guide groove.
[0017] By adopting the above technical solution, the main rod will not rotate and shake due to the matching between the guide groove and the guide block when the main rod moves, and the stability of the anchor rod insertion operation is improved.
[0018] Alternatively, the base has one open end and an inner cavity; an end of the bracket extends into the cavity of the base and slides relatively; and an elastic member is arranged in the cavity of the base.
Date Regue/Date Received 2022-09-02
Date Regue/Date Received 2022-09-02
[0019] By adopting the above technical solution, when the support is pressed down, the elastic member is compressed, then the height of the whole auxiliary tool is lowered, which is beneficial to the separation of the fixed member from the anchor rod and facilitates the operation.
[0020] Alternatively, the feed assembly is installed at one end of the main rod; the power assembly includes a micro motor or a hand wheel and a transmission structure installed at the other end of the main rod; and the transmission structure is any one or two of a belt transmission structure, a chain transmission structure, and a gear transmission structure.
[0021] By adopting the above technical solution, both the micro motor and the hand wheel may conveniently drive the rotating member to rotate, and have simple structure and convenient installation and maintenance.
[0022] In the second aspect, the present application provides a method for making a 3D printed rock mass physical model by adopting the following technical solutions:
A method for making a 3D printed rock mass physical model, including the following steps:
3D printing a sand mold model matrix integrally, in which the model matrix is provided with a tunnel opening and a plurality of anchor holes in an inner wall of the tunnel opening; and inserting the anchor rod into the anchor hole of the model matrix using the above auxiliary device for making a 3D printed tunnel model.
A method for making a 3D printed rock mass physical model, including the following steps:
3D printing a sand mold model matrix integrally, in which the model matrix is provided with a tunnel opening and a plurality of anchor holes in an inner wall of the tunnel opening; and inserting the anchor rod into the anchor hole of the model matrix using the above auxiliary device for making a 3D printed tunnel model.
[0023] By adopting the above technical solution, the sand has structure and components that are closer to the rock mass, so the integrally printed model matrix reduces the possibility that the gap between the modules of the assembled model affects the experimental results.
The auxiliary device inserts and fixes the anchor rod into the anchor hole, which can simulate the actual engineering state more realistically, and the test simulation data reflects the actual engineering situation more closely.
The auxiliary device inserts and fixes the anchor rod into the anchor hole, which can simulate the actual engineering state more realistically, and the test simulation data reflects the actual engineering situation more closely.
[0024] To sum up, the present application achieves at least one of the following beneficial technical effects:
Date Regue/Date Received 2022-09-02 The anchor rod is firstly passed through the perforation of the fixed member outside the physical model, so that the slot in the anchor rod is aligned with the limiting ridge in the fixed member, and an end of the anchor rod extends into the rotating member; the end of the anchor rod to be flush with the end of the perforation of fixed member or to protrude a small section by rotating the rotating member. Then, the feed assembly and the anchor rod are inserted into the tunnel opening of the physical model via the main rod. When the anchor rod is moved to align with the anchor hole in the physical model, the rotating member is driven to rotate by the power assembly.
Due to the screwed connection between the anchor rod and the rotating member, and the circumferential rotation of the anchor rod is restricted by the limiting ridge, so that the anchor rod is directionally moved along the perforation axis and inserted into the anchor hole of the physical model. It can simulate the actual engineering state more realistically, and the test simulation data reflects the actual engineering situation more closely.
BRIEF DESCRIPTION OF DRAWINGS
Date Regue/Date Received 2022-09-02 The anchor rod is firstly passed through the perforation of the fixed member outside the physical model, so that the slot in the anchor rod is aligned with the limiting ridge in the fixed member, and an end of the anchor rod extends into the rotating member; the end of the anchor rod to be flush with the end of the perforation of fixed member or to protrude a small section by rotating the rotating member. Then, the feed assembly and the anchor rod are inserted into the tunnel opening of the physical model via the main rod. When the anchor rod is moved to align with the anchor hole in the physical model, the rotating member is driven to rotate by the power assembly.
Due to the screwed connection between the anchor rod and the rotating member, and the circumferential rotation of the anchor rod is restricted by the limiting ridge, so that the anchor rod is directionally moved along the perforation axis and inserted into the anchor hole of the physical model. It can simulate the actual engineering state more realistically, and the test simulation data reflects the actual engineering situation more closely.
BRIEF DESCRIPTION OF DRAWINGS
[0025] FIG. 1 is a structural schematic diagram illustrating the overall structure of the auxiliary device for making a 3D printed tunnel model in use according to the present application;
Fig. 2 is a cross-sectional view of the A-A plane in Fig. 1;
Fig. 3 is a schematic diagram illustrating the overall structure according to an embodiment of the present application;
FIG. 4 is a cross-sectional view of the B-B plane illustrating the connection structure of the bracket and the base in FIG. 3;
Fig. 5 is a cross-sectional view of part C-C in Fig. 4;
Fig. 6 is a structural schematic diagram illustrating the connection structure of the main rod and the bracket;
Fig. 7 is a structural schematic diagram illustrating the anchor insertion mechanism;
Date Regue/Date Received 2022-09-02 FIG. 8 is a structural schematic diagram illustrating the connection relationship between the feed assembly and the anchor rod.
Fig. 2 is a cross-sectional view of the A-A plane in Fig. 1;
Fig. 3 is a schematic diagram illustrating the overall structure according to an embodiment of the present application;
FIG. 4 is a cross-sectional view of the B-B plane illustrating the connection structure of the bracket and the base in FIG. 3;
Fig. 5 is a cross-sectional view of part C-C in Fig. 4;
Fig. 6 is a structural schematic diagram illustrating the connection structure of the main rod and the bracket;
Fig. 7 is a structural schematic diagram illustrating the anchor insertion mechanism;
Date Regue/Date Received 2022-09-02 FIG. 8 is a structural schematic diagram illustrating the connection relationship between the feed assembly and the anchor rod.
[0026] Description of reference numbers: 1. support mechanism; 11. base; 111.
elastic member;
12. bracket; 121. pressing plate; 122. sliding groove; 123. elongated slot;
13. cross rod; 2. main rod; 21. guide groove; 3. anchor insertion mechanism; 31. micro motor; 32.
driving wheel; 33.
conveyor belt; 34. driven wheel; 35. rotating member; 36. fixed member; 361.
limiting ridge;
362. connecting plate; 4. mounting seat; 41. guide block; 42. pointer; 5.
anchor rod; 51. slot; 6.
model matrix; 61. tunnel opening; 62. anchor hole.
DETAILED DESCRIPTION
elastic member;
12. bracket; 121. pressing plate; 122. sliding groove; 123. elongated slot;
13. cross rod; 2. main rod; 21. guide groove; 3. anchor insertion mechanism; 31. micro motor; 32.
driving wheel; 33.
conveyor belt; 34. driven wheel; 35. rotating member; 36. fixed member; 361.
limiting ridge;
362. connecting plate; 4. mounting seat; 41. guide block; 42. pointer; 5.
anchor rod; 51. slot; 6.
model matrix; 61. tunnel opening; 62. anchor hole.
DETAILED DESCRIPTION
[0027] The present application will be further described in detail below in combination with FIGs. 1-8.
[0028] The embodiment of the present application discloses an auxiliary device for making a 3D
printed tunnel model. Referring to FIG. 1 and FIG. 2, the auxiliary device for 3D printed tunnel model includes a support mechanism 1 and a mounting seat 4 mounted to the support mechanism 1. The mounting seat 4 is slidably connected to a main rod 2, on which an anchor insertion mechanism 3 is installed. The physical model of the 3D printed rock mass includes a model matrix 6 and an anchor rod 5 inserted into the model matrix 6. A tunnel opening 61 is formed through the model matrix 6, and a plurality of anchor hole 62 for insertion are provided in the model matrix 6 inside the tunnel opening 61. In use, the anchor rod 5 is pre-installed on the anchor insertion mechanism 3; the support mechanism 1 is placed on a platform, and then the anchor insertion mechanism 3 is extended into the tunnel opening 61 of the model matrix 6 via the main rod 2; the anchor rod 5 is aligned with the anchor hole 62 in the model matrix 6 by adjusting the inserted depth of the main rod 2, then the anchor insertion mechanism 3 is activated to insert the anchor rod 5 into the corresponding anchor hole 62 for fixing;
then the auxiliary device is withdrawn from the model matrix 6; and the mechanical test of the 3D
printed rock Date Regue/Date Received 2022-09-02 mass physical model is carried out. Since the anchor rod 5 is contained in the physical model, the simulated data results of the test reflect the actual engineering situation more realistically.
printed tunnel model. Referring to FIG. 1 and FIG. 2, the auxiliary device for 3D printed tunnel model includes a support mechanism 1 and a mounting seat 4 mounted to the support mechanism 1. The mounting seat 4 is slidably connected to a main rod 2, on which an anchor insertion mechanism 3 is installed. The physical model of the 3D printed rock mass includes a model matrix 6 and an anchor rod 5 inserted into the model matrix 6. A tunnel opening 61 is formed through the model matrix 6, and a plurality of anchor hole 62 for insertion are provided in the model matrix 6 inside the tunnel opening 61. In use, the anchor rod 5 is pre-installed on the anchor insertion mechanism 3; the support mechanism 1 is placed on a platform, and then the anchor insertion mechanism 3 is extended into the tunnel opening 61 of the model matrix 6 via the main rod 2; the anchor rod 5 is aligned with the anchor hole 62 in the model matrix 6 by adjusting the inserted depth of the main rod 2, then the anchor insertion mechanism 3 is activated to insert the anchor rod 5 into the corresponding anchor hole 62 for fixing;
then the auxiliary device is withdrawn from the model matrix 6; and the mechanical test of the 3D
printed rock Date Regue/Date Received 2022-09-02 mass physical model is carried out. Since the anchor rod 5 is contained in the physical model, the simulated data results of the test reflect the actual engineering situation more realistically.
[0029] Referring to FIG. 3 and FIG. 4, the support mechanism 1 includes a base 11 and a bracket 12. The bracket 12 includes an arc-shaped part and support parts fixed at both ends of the arc-shaped part. There are two brackets 12 arranged side by side. The two brackets 12 are fixedly connected by a cross rod 13 which is fixed on the support parts; each support part corresponds to one base 11, and the bases 11 on the same side of the two brackets 12 are also fixedly connected by the cross rod 13. The cross rod 13 may be fixed to the base 11 and the bracket 12 by screws.
[0030] The base 11 may be a cuboid with an open end and an inner cavity. A
pressing plate 121 is fixed at one end of the bracket 12. One end of the support part with the pressing plate 121 extends into the cavity of the base 11 and can slide relative to the base 11.
An elastic member 111 is provided in the inner cavity of the base 11, and a spring may be selected as the elastic member 111. The contour at the opening of the base 11 is smaller than the contour of the pressing plate 121 to prevent the bracket 12 from being detached from the base 11. The elastic member 111 exerts a supporting force on the pressing plate 121 when the bracket 12 is not subjected to other external forces, so that the pressing plate 121 is close to the open end of the base 11; the support part can drive the pressing plate 121 to compress the spring to contract and deform, and the support part is inserted into the base 11 to adjust the height of the entire support mechanism 1 when the bracket 12 is subjected to external force.
pressing plate 121 is fixed at one end of the bracket 12. One end of the support part with the pressing plate 121 extends into the cavity of the base 11 and can slide relative to the base 11.
An elastic member 111 is provided in the inner cavity of the base 11, and a spring may be selected as the elastic member 111. The contour at the opening of the base 11 is smaller than the contour of the pressing plate 121 to prevent the bracket 12 from being detached from the base 11. The elastic member 111 exerts a supporting force on the pressing plate 121 when the bracket 12 is not subjected to other external forces, so that the pressing plate 121 is close to the open end of the base 11; the support part can drive the pressing plate 121 to compress the spring to contract and deform, and the support part is inserted into the base 11 to adjust the height of the entire support mechanism 1 when the bracket 12 is subjected to external force.
[0031] Referring to FIG. 4 and FIG. 5, the arc-shaped part of the bracket 12 has a rectangular cross-section and is provided with a sliding groove 122 on an outer arc surface along the circumferential direction, and the sliding groove 122 is a T-shaped groove. A
elongated slot 123 in communication with the sliding groove 122 along the circumferential direction is formed on an end surface of the arc-shaped part. The bracket 12 is provided with an angle scale on the arc-shaped part, and the angle scale may also be replaced by a fixed position mark as required.
Date Regue/Date Received 2022-09-02
elongated slot 123 in communication with the sliding groove 122 along the circumferential direction is formed on an end surface of the arc-shaped part. The bracket 12 is provided with an angle scale on the arc-shaped part, and the angle scale may also be replaced by a fixed position mark as required.
Date Regue/Date Received 2022-09-02
[0032] Referring to FIG. 5 and FIG. 6, the main rod 2 has a circular cross-section, and the surface of the main rod 2 is provided with a guide groove 21 along the generatrix direction. The main rod 2 is provided with a scale along the length direction.
[0033] The mounting seat 4 is slidably arranged on the sliding groove 122 of the bracket 12; one -- end of the mounting seat 4 is provided with a sliding part that is adapted to and slides relatively to the sliding groove 122, and the other end of the mounting seat 4 is provided with a clamping part that has a contour matching with the main rod 2. The clamping part has a circular arc shape and a certain elasticity, so that the main rod 2 is inserted from the opening of the clamping part and then clamped. The clamping part is integrally provided with a guide block 41 matching with -- the guide groove 21, so that the main rod 2 can only slide along the axial direction of the clamping part after being clamped into the clamping part of the mounting base 4.
[0034] In order to conveniently fix the position of the mounting seat 4, the sliding part is provided with a threaded post passing through the elongated slot 123; the threaded post may be fixed to the sliding part by insertion or by screwing. The threaded post is in thread connection -- with a nut. The mounting seat 4 and the bracket 12 are fixed in position by rotating and tightening the nut after the mounting seat 4 is moved to an appropriate position.
[0035] The mounting seat 4 is fixed with a pointer 42 between the sliding part and the clamping part, and the pointer 42 is parallel to the plane where the angle scale is located, so that the position of the mounting seat 4 may be adjusted accurately.
-- [0036] Referring to FIG. 7 and FIG. 8, the anchor insertion mechanism 3 includes a feed assembly and a power assembly, and the power assembly includes a micro motor 31 installed on one end of the main rod 2 and a transmission structure arranged on the main rod 2, in which the transmission structure is belt transmission; the transmission structure includes a driving wheel 32, a driven wheel 34 and a conveyor belt 33 connected to the driving wheel 32 and the driven wheel 34; the driving wheel 32 is coaxially fixed with the output shaft of the micro motor 31, and the Date Regue/Date Received 2022-09-02 driven wheel 34 is rotatably connected to the main rod 2 at one end away from the micro motor 31. In an alternative embodiment of the present application, the transmission structure may also be a chain transmission, a worm gear transmission, etc. The micro motor 31 may be a forward and reverse rotation motor. The micro motor 31 may also be replaced by a hand wheel as required.
10037] The feed assembly includes a fixed member 36 fixed on one end of the main rod 2 close to the driven wheel 34 and a rotating member 35 connected to the fixed member
-- [0036] Referring to FIG. 7 and FIG. 8, the anchor insertion mechanism 3 includes a feed assembly and a power assembly, and the power assembly includes a micro motor 31 installed on one end of the main rod 2 and a transmission structure arranged on the main rod 2, in which the transmission structure is belt transmission; the transmission structure includes a driving wheel 32, a driven wheel 34 and a conveyor belt 33 connected to the driving wheel 32 and the driven wheel 34; the driving wheel 32 is coaxially fixed with the output shaft of the micro motor 31, and the Date Regue/Date Received 2022-09-02 driven wheel 34 is rotatably connected to the main rod 2 at one end away from the micro motor 31. In an alternative embodiment of the present application, the transmission structure may also be a chain transmission, a worm gear transmission, etc. The micro motor 31 may be a forward and reverse rotation motor. The micro motor 31 may also be replaced by a hand wheel as required.
10037] The feed assembly includes a fixed member 36 fixed on one end of the main rod 2 close to the driven wheel 34 and a rotating member 35 connected to the fixed member
36 by a connecting plate 362. The connecting plate 362 is fixed to the fixed member 36 by welding or screws. The connecting plate 362 is rotatably connected to the rotating member 35, and the rotation mode may be a bearing connection. The fixed member 36 may be a rectangular plate or a plate of other shapes. The rotating member 35 is connected to the driven wheel 34. A belt transmission may be selected, and a gear transmission or a chain transmission may also be selected as required. In order to prevent the belt from falling off, the surface of the rotating member 35 is provided with a groove along the circumferential direction for holding the belt.
The fixed member 36 is provided with a perforation, and a limiting ridge 361 in the inner wall of the perforation. The perforation in the fixed member 36 is arranged coaxially with the rotating member 35.
[0038] The rotating member 35 may be a threaded sleeve, and the anchor rod 5 is in thread connection with the rotating member 35. A surface of an anchor rod 5 is defined with a slot 51 in an axial direction. The slot 51 has a cross-section adapted to the limiting ridge 361.
[0039] One end of the anchor rod 5 passes through the perforation in the fixed member 36 and then is in thread connection with the rotating member 35. Because the limiting ridge 361 cooperates with the slot 51 in the anchor rod 5 to prevent the anchor rod 5 from rotating, the anchor rod 5 moves along the perforation axis of the fixed member 36 when the rotating member 35 rotates.
Date Regue/Date Received 2022-09-02 [0040] In an alternative embodiment of the present application, the surface of the anchor rod 5 is provided with a helical groove; the rotating member 35 is provided with a through-hole having a same outer diameter with the anchor rod 5; and the rotating member 35 is provided with a protrusion that may extend into the helical groove in the inner wall of the perforation; the depth of the helical groove is greater than the depth of the groove 51 to prevent the protrusion from slipping off from the groove 51 when the protrusion rotates to the intersection of the helical groove and the groove 51. The protrusion rotates as the rotating member 35 rotates. Since the protrusion is located in the helical groove, the protrusion drives the anchor rod 5 having the helical groove to move along the axis of the through-hole.
[0041] In order to intuitively understand the axis direction of the anchor rod 5, the end of the pointer 42 may be directed parallel to the axis of the rotating member 35.
[0042] The auxiliary device may be sized according to the cross-section of the tunnel opening 61 in the model matrix 6, so that the auxiliary device may extend into the tunnel opening 61.
[0043] A method for making a physical model by the auxiliary device for making a 3D printed tunnel model is as follows:
(1) Preparing the model matrix 6 for 3D printing:
51: the natural rock mass having fissure structure was 3D modelled and outputted;
S2: the model matrix 6 is integrally printed by a 3D sand printing device.
[0044] (2) Installing the fixed anchor rod 5:
51: the anchor rod 5 is installed on the rotating member 35, and then the auxiliary device is extended into the tunnel opening 61, such that the bracket 12 is flush with the end of the tunnel opening 61;
S2: adjusting the position of the anchor rod 5: the main rod 2 is moved to a predetermined insertion depth according to the position of the anchor hole 62 designed for the 3D model, and the insertion depth of the main rod 2 may be judged by the scale on the main rod 2; then the Date Regue/Date Received 2022-09-02 mounting seat 4 is moved and adjusted according to the axis angle of the anchor hole 62, so that the position corresponding to the pointer 42 and the angle scale on the bracket 12 meets the requirements, and then the mounting seat 4 is fixed; at this time, the axis of the anchor rod 5 is aligned with the anchor hole 62;
S3: the micro motor 31 is started, and the anchor rod 5 is inserted into the anchor hole 62, and stops moving when the anchor rod 5 is separated from the rotating member 35;
S4: the bracket 12 is pressed down to lower the height of the auxiliary device; and the fixed member 36 moves down and separates from the anchor rod 5 at the same time; ;
the auxiliary device is pulled out from the tunnel opening 61; then other rods is used to press the exposed part of the anchor rod 5 into the anchor hole 62.
[0045] The remaining anchor rods 5 are installed by repeating the above steps, then a 3D printed rock mass physical model is produced, and the model is used for geotechnical engineering test simulation. Since there are anchor rods 5 in the physical model for support and reinforcement, the simulation data reflects the actual engineering more closely.
[0046] In order to improve the connection firmness of the anchor rod 5 and the model matrix 6, the surface of the anchor rod 5 may be coated with glue, and the physical model is tested after the glue hardens. The auxiliary device is used after being cleaned before the glue is harden.
[0047] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent modification made according to the structure, shape and principle of the present application falls into the protection scope of the present application.
Date Regue/Date Received 2022-09-02
The fixed member 36 is provided with a perforation, and a limiting ridge 361 in the inner wall of the perforation. The perforation in the fixed member 36 is arranged coaxially with the rotating member 35.
[0038] The rotating member 35 may be a threaded sleeve, and the anchor rod 5 is in thread connection with the rotating member 35. A surface of an anchor rod 5 is defined with a slot 51 in an axial direction. The slot 51 has a cross-section adapted to the limiting ridge 361.
[0039] One end of the anchor rod 5 passes through the perforation in the fixed member 36 and then is in thread connection with the rotating member 35. Because the limiting ridge 361 cooperates with the slot 51 in the anchor rod 5 to prevent the anchor rod 5 from rotating, the anchor rod 5 moves along the perforation axis of the fixed member 36 when the rotating member 35 rotates.
Date Regue/Date Received 2022-09-02 [0040] In an alternative embodiment of the present application, the surface of the anchor rod 5 is provided with a helical groove; the rotating member 35 is provided with a through-hole having a same outer diameter with the anchor rod 5; and the rotating member 35 is provided with a protrusion that may extend into the helical groove in the inner wall of the perforation; the depth of the helical groove is greater than the depth of the groove 51 to prevent the protrusion from slipping off from the groove 51 when the protrusion rotates to the intersection of the helical groove and the groove 51. The protrusion rotates as the rotating member 35 rotates. Since the protrusion is located in the helical groove, the protrusion drives the anchor rod 5 having the helical groove to move along the axis of the through-hole.
[0041] In order to intuitively understand the axis direction of the anchor rod 5, the end of the pointer 42 may be directed parallel to the axis of the rotating member 35.
[0042] The auxiliary device may be sized according to the cross-section of the tunnel opening 61 in the model matrix 6, so that the auxiliary device may extend into the tunnel opening 61.
[0043] A method for making a physical model by the auxiliary device for making a 3D printed tunnel model is as follows:
(1) Preparing the model matrix 6 for 3D printing:
51: the natural rock mass having fissure structure was 3D modelled and outputted;
S2: the model matrix 6 is integrally printed by a 3D sand printing device.
[0044] (2) Installing the fixed anchor rod 5:
51: the anchor rod 5 is installed on the rotating member 35, and then the auxiliary device is extended into the tunnel opening 61, such that the bracket 12 is flush with the end of the tunnel opening 61;
S2: adjusting the position of the anchor rod 5: the main rod 2 is moved to a predetermined insertion depth according to the position of the anchor hole 62 designed for the 3D model, and the insertion depth of the main rod 2 may be judged by the scale on the main rod 2; then the Date Regue/Date Received 2022-09-02 mounting seat 4 is moved and adjusted according to the axis angle of the anchor hole 62, so that the position corresponding to the pointer 42 and the angle scale on the bracket 12 meets the requirements, and then the mounting seat 4 is fixed; at this time, the axis of the anchor rod 5 is aligned with the anchor hole 62;
S3: the micro motor 31 is started, and the anchor rod 5 is inserted into the anchor hole 62, and stops moving when the anchor rod 5 is separated from the rotating member 35;
S4: the bracket 12 is pressed down to lower the height of the auxiliary device; and the fixed member 36 moves down and separates from the anchor rod 5 at the same time; ;
the auxiliary device is pulled out from the tunnel opening 61; then other rods is used to press the exposed part of the anchor rod 5 into the anchor hole 62.
[0045] The remaining anchor rods 5 are installed by repeating the above steps, then a 3D printed rock mass physical model is produced, and the model is used for geotechnical engineering test simulation. Since there are anchor rods 5 in the physical model for support and reinforcement, the simulation data reflects the actual engineering more closely.
[0046] In order to improve the connection firmness of the anchor rod 5 and the model matrix 6, the surface of the anchor rod 5 may be coated with glue, and the physical model is tested after the glue hardens. The auxiliary device is used after being cleaned before the glue is harden.
[0047] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent modification made according to the structure, shape and principle of the present application falls into the protection scope of the present application.
Date Regue/Date Received 2022-09-02
Claims (9)
1. An auxiliary device for making a 3D printed tunnel model, characterized by comprising a main rod and an anchor insertion mechanism that can extend into a tunnel opening of a physical model, wherein the anchor insertion mechanism comprises a feed assembly and a power assembly installed on the main rod; the feed assembly comprises a fixed member fixed on the main rod and a rotating member rotatably arranged; the power assembly is configured to drive the rotating member to rotate; a surface of an anchor rod is defined with a slot in an axial direction; the rotating member is in threaded connection with the anchor rod;
the fixed member is provided with a perforation for the anchor rod to pass through; the perforation is coaxial with a screw hole in the rotating member; and the fixed member is provided with a limiting ridge cooperating with the slot in the anchor rod to limit a circumferential rotation of the anchor rod.
the fixed member is provided with a perforation for the anchor rod to pass through; the perforation is coaxial with a screw hole in the rotating member; and the fixed member is provided with a limiting ridge cooperating with the slot in the anchor rod to limit a circumferential rotation of the anchor rod.
2. The auxiliary device for making a 3D printed tunnel model according to claim 1, characterized in that, a surface of the main rod is provided with a scale along a length direction of the main rod.
3. The auxiliary device for making a 3D printed tunnel model according to claim 1 or 2, characterized in that, the auxiliary device for making a 3D printed model further comprises a support mechanism; the support mechanism comprises a base and a bracket; the bracket is configured to slide up and down relative to the base and be fixed at a position; and the main rod is supported on the bracket and slides along a length direction of the main rod relative to the bracket.
4. The auxiliary device for making a 3D printed tunnel model according to claim 3, characterized in that, the bracket comprises an arc-shaped part matching with an outline of the tunnel opening of the physical model; the arc-shaped part is provided with a mounting seat configured to slide along an arc surface of the arc-shaped part and be fixed at a position; the main rod is snap connected with the mounting seat; the arc-shaped part is provided with an angle scale; the mounting seat is provided with a pointer; and a direction of the pointer is parallel to an axis of the perforation in the fixed member.
5. The auxiliary device for making a 3D printed tunnel model according to claim 4, characterized in that, the arc-shaped part has a rectangular cross-section, and is defined with a sliding groove in an outer arc surface; an elongated slot in communication with the sliding groove along the circumferential direction is formed in an end surface of the arc-shaped part;
the mounting seat is configured to slide relative to the sliding groove; the mounting seat is fixed with a threaded post extending out of the elongated slot; and the threaded post is in thread connection with a nut.
the mounting seat is configured to slide relative to the sliding groove; the mounting seat is fixed with a threaded post extending out of the elongated slot; and the threaded post is in thread connection with a nut.
6. The auxiliary device for making a 3D printed tunnel model according to claim 4, characterized in that, a guide groove is formed in a surface of the main rod along the length direction of the main rod, and the mounting seat is fixedly provided with a guide block cooperating with the guide groove.
7. The auxiliary device for making a 3D printed tunnel model according to claim 3, characterized in that, the base has one open end and an inner cavity; an end of the bracket extends into the cavity of the base and slides relatively; and an elastic member is arranged in the cavity of the base.
8. The auxiliary device for making a 3D printed tunnel model according to claim 1, characterized in that, the feed assembly is installed at one end of the main rod; the power assembly comprises a micro motor or a hand wheel and a transmission structure installed at the other end of the main rod; and the transmission structure is any one or two of a belt transmission structure, a chain transmission structure, and a gear transmission structure.
9. A method for making a 3D printed rock mass physical model, characterized by comprising the following steps:
3D printing a sand mold model matrix integrally, wherein the model matrix is provided with a tunnel opening and a plurality of anchor hole in an inner wall of the tunnel opening; and inserting an anchor rod into the plurality of anchor hole of the model matrix using the auxiliary device for making a 3D printed tunnel model according to any one of claims 1 to 8.
3D printing a sand mold model matrix integrally, wherein the model matrix is provided with a tunnel opening and a plurality of anchor hole in an inner wall of the tunnel opening; and inserting an anchor rod into the plurality of anchor hole of the model matrix using the auxiliary device for making a 3D printed tunnel model according to any one of claims 1 to 8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111034683.9 | 2021-09-04 | ||
| CN202111034683.9A CN113715132B (en) | 2021-09-04 | 2021-09-04 | 3D printing tunnel model making auxiliary device and model making method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3171806A1 true CA3171806A1 (en) | 2023-03-04 |
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ID=78681794
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3171806A Pending CA3171806A1 (en) | 2021-09-04 | 2022-09-02 | An auxiliary device and a method for making a 3d printed tunnel model |
Country Status (3)
| Country | Link |
|---|---|
| CN (2) | CN115503070A (en) |
| AU (1) | AU2022221553B2 (en) |
| CA (1) | CA3171806A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115256829A (en) * | 2022-08-02 | 2022-11-01 | 重庆交通大学 | Three-dimensional tunnel model forming method and device |
| CN117250027B (en) * | 2023-11-20 | 2024-01-26 | 中国矿业大学(北京) | Tunnel model test simulated excavation supporting device and test method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206636498U (en) * | 2017-03-07 | 2017-11-14 | 中国科学院武汉岩土力学研究所 | The device of bolthole is bored in a kind of minimum tunnel of physical analogy |
| CN208441092U (en) * | 2018-06-28 | 2019-01-29 | 中原工学院 | A kind of Rock And Soil locking type reinforcing anchor pole |
| CN213144546U (en) * | 2020-08-03 | 2021-05-07 | 中铁工程设计咨询集团有限公司 | Tunnel pressure detection and inspection device |
| CN213897069U (en) * | 2020-12-14 | 2021-08-06 | 安徽振华项目管理有限公司 | Foundation settlement detector |
| CN112816332A (en) * | 2020-12-28 | 2021-05-18 | 长安大学 | Test method for simulating tunnel to penetrate through columnar jointed rock mass |
| CN112832832A (en) * | 2021-01-15 | 2021-05-25 | 华北水利水电大学 | Positioning and mounting device and method for indoor tunnel model experiment support anchor rod |
-
2021
- 2021-09-04 CN CN202211209991.5A patent/CN115503070A/en active Pending
- 2021-09-04 CN CN202111034683.9A patent/CN113715132B/en active Active
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2022
- 2022-08-26 AU AU2022221553A patent/AU2022221553B2/en active Active
- 2022-09-02 CA CA3171806A patent/CA3171806A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AU2022221553A1 (en) | 2023-03-23 |
| CN115503070A (en) | 2022-12-23 |
| AU2022221553B2 (en) | 2024-05-02 |
| CN113715132B (en) | 2022-11-04 |
| CN113715132A (en) | 2021-11-30 |
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