A three-dimensional model device for construction engineering design

Abstract

The application discloses a kind of three-dimensional model devices special for building engineering design, belong to three-dimensional model device technical field, including bearing platform, the lower end surface outer edge of bearing platform is fixedly installed with multiple groups of supporting legs, and the upper side of bearing platform is provided with tray.The scheme realizes the purpose that tray can be quickly installed and disassembled by designing convenient fixing mechanism, uses inner and outer double-layer fixing pieces, ensures the stability while ensuring the installation speed, effectively avoids any shaking of tray that can occur during printing process, thereby guarantees the high-precision completion of printing job, to further enhance the fixing effect, locking piece is specially set, so that the whole fixing system is more firm and reliable, greatly improves the convenience and safety of use, meets the efficient, accurate modern printing needs, such design not only improves work efficiency, but also simplifies operation process, provides great convenience for users.

Description

Technical Field

[0001] The present invention relates to the technical field of three-dimensional model devices, and more particularly to a three-dimensional model device dedicated to architectural engineering design. Background Art

[0002] Architectural design refers to the process in which designers make comprehensive plans in advance according to the construction tasks before a building is built, so that the completed building can fully meet the various requirements and uses expected by users and society. In the process of architectural design, it is necessary to build models to better understand things, and special three-dimensional model devices are needed for design.

[0003] A Chinese patent with the authorization publication number CN217640498U discloses a three-dimensional model device specifically for architectural engineering design. Through a mobile distance measuring mechanism, it can act on different positions of the model during the design process to detect whether the model height meets the design requirements. It can also adjust the distance between the indicator mark and the right-angle clamping plate to design models of fixed height, ensuring the accuracy of the model design and ease of use.

[0004] Although this type of 3D model device dedicated to architectural engineering design can adjust the distance between the indicator and the right-angled pallet, like existing equipment, during the process of model building and printing, due to the lack of rigid fixation and dynamic stability control mechanism for the pallet, the printing system has structural defects when operating at high speed. When the high-precision nozzle sprays hot-melt material according to the preset trajectory, the dynamic impact force generated by the material deposition and the combined force formed by the mechanical movement of the equipment will be transmitted to the pallet base through the printing platform. The traditional device only relies on simple clips or gravity adsorption fixation methods, which is difficult to effectively offset the X / Y / Z three-axis directions. The asymmetric stress distribution on the printing surface will not only cause millimeter-level instantaneous displacement of the tray, but also cause a gradual deviation between the printing substrate and the preset coordinates due to the cumulative effect of the stacking of materials layer by layer. Especially when printing complex surfaces or suspended structures, the alternating loads formed by the high-speed reciprocating motion of the nozzle and the cooling and contraction of the material will intensify the micro-vibration of the tray and reduce the interlayer bonding strength of the key parts of the molded parts. What is more serious is that this substrate instability will resonate with the natural frequency of the equipment, further amplifying the positioning deviation of the print head, and ultimately leading to irreversible geometric distortion of the key features of the precision components. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a three-dimensional model device specially used for architectural engineering design, which can realize the rapid and stable installation of pallets.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] The 3D model device specially designed for architectural engineering design comprises a pedestal, wherein a plurality of groups of supporting legs are fixedly installed at the outer edge of the lower end surface of the pedestal, a tray is provided on the upper side of the pedestal, a support member 1 is fixedly installed on the outer surface of the pedestal, a 3D printing device is provided at one end of the support member 1, a convenient fixing mechanism is provided inside the pedestal, the convenient fixing mechanism comprises an inner and outer fixing member arranged inside the pedestal, the inner and outer fixing member comprises a groove provided on the upper end surface of the pedestal, a plug plate is fixedly installed on the lower end surface of the tray, the plug plate is inserted into the interior of the groove, a notch is provided on the outer surface of the pedestal, a shift rod is slidably connected to the interior of the notch, a transmission plate is provided inside the pedestal, a slide groove is provided on the front end surface of the transmission plate, a slide rod is fixedly installed on the inner wall of the pedestal, the slide rod is slidably connected to the slide groove, a fixed plate is fixedly installed on one end of the transmission plate, the fixed plate is fixedly connected to one end of the shift rod, and a spring is fixedly installed between the fixed plate and the inner wall of the pedestal.

[0008] The internal and external fixing parts also include a reciprocating screw connected to the internal rotation of the base, a gear 1 is fixedly installed on the outer surface of the reciprocating screw, and a rack 1 is fixedly installed on the upper end surface of the transmission plate, and the rack 1 is meshed with the gear 1.

[0009] The thread groove on the outer surface of the reciprocating screw is a bidirectional thread groove, and a one-way bearing is provided inside the gear one.

[0010] Both sides of the outer surface of the reciprocating screw are spirally connected with threaded sleeves, the outer surface of the threaded sleeve is rotatably connected to a connecting rod, the inner lower end surface of the groove is provided with a second slide groove, the inner sliding connection of the second slide groove is an inner splint, the lower end surface of the inner splint is fixedly installed with a top block, and the two groups of connecting rods are rotatably connected to the top block.

[0011] The connecting rod, the top block, the inner clamping plate and the sliding groove are respectively provided in two groups and are symmetrically arranged.

[0012] The upper sides of the outer surfaces of the two groups of threaded sleeves are fixedly mounted with outer splints, and the inner walls on both sides of the groove are provided with slots 2 corresponding to the two groups of outer splints, and each group of outer splints is slidably connected to the corresponding slots 2.

[0013] The convenient fixing mechanism also includes a locking piece arranged at the outer edge of the inner part of the support platform, and the locking piece includes a rotating shaft rotatably connected to the lower end surface of the inner part of the support platform. A toothed disc is fixedly installed on the upper end of the rotating shaft, and a rack 2 is engaged with one side of the toothed disc, and the rack 2 is fixedly connected to the transmission plate.

[0014] One side of the toothed disc is engaged with gear 2, the upper end surface of gear 2 is fixedly mounted with a rotating rod, the inner wall of the base is fixedly mounted with support member 2, the rotating rod is rotatably connected to support member 2, the upper end of the rotating rod is fixedly mounted with a bump 1, one side of the bump 1 is provided with a bump 2, and a one-way bearing is provided inside the gear 2.

[0015] A support member three is fixedly installed on the inner upper end surface of the support platform, and a plug rod is slidably connected to the lower end of the support member three. One end of the plug rod is fixedly connected to the protrusion two, and a spring two is fixedly installed between the protrusion two and the support member three. The spring two is sleeved on the outer surface of the plug rod, and the groove, the insert plate and the inner splint are all provided with slots corresponding to the plug rod.

[0016] The second gear, the rotating rod, the second support member, the first protrusion, the second protrusion, the third support member, the insertion rod, the second spring and the slot in the locking member are respectively provided in four groups and are dispersedly arranged in a ring shape.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) This solution achieves the purpose of rapid installation and removal of the tray by designing a convenient fixing mechanism. The use of inner and outer double-layer fixing parts ensures the installation speed while also ensuring its stability, effectively avoiding any shaking of the tray during the printing process, thereby ensuring the high-precision completion of the printing operation. In order to further enhance the fixing effect, a locking part is specially set up to make the entire fixing system more firm and reliable, greatly improving the convenience and safety of use, and meeting the modern printing needs of high efficiency and precision. Such a design not only improves work efficiency, but also simplifies the operation process and provides great convenience for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0021] Figure 3 For the present invention Figure 2 A in the middle is an enlarged schematic diagram;

[0022] Figure 4 For the present invention Figure 2 The enlarged schematic diagram of point B in the middle;

[0023] Figure 5 is a cross-sectional view of the locking member of the present invention;

[0024] Figure 6 For the present invention Figure 5 Enlarged schematic diagram at point C in the middle;

[0025] Figure 7 For the present invention Figure 5 Enlarged schematic diagram at point D in the middle.

[0026] Description of the numbers in the figure:

[0027] 1. Support platform; 2. Support leg; 3. Tray; 4. Support member 1; 5. 3D printing device; 6. Groove; 7. Insert plate; 8. Notch 1; 9. Push rod; 10. Transmission plate; 11. Slide 1; 12. Slide rod; 13. Spring 1; 14. Fixed plate; 15. Reciprocating screw; 16. Rack 1; 17. Gear 1; 18. Threaded sleeve; 19. Connecting rod; 20. Top block; 21. Slide 2; 22. Inner splint; 23. Outer splint; 24. Notch 2; 25. Rotating shaft; 26. Tooth disc; 27. Rack 2; 28. Gear 2; 29. ​​Rotating rod; 30. Support member 2; 31. Bump 1; 32. Bump 2; 33. Support member 3; 34. Insert rod; 35. Spring 2; 36. Slot. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] See also Figures 1 to 7 A three-dimensional model device for architectural engineering design includes a base 1, a plurality of support legs 2 are fixedly installed at the outer edge of the lower end surface of the base 1, a tray 3 is provided on the upper side of the base 1, a support member 4 is fixedly installed on the outer surface of the base 1, a three-dimensional printing device 5 is provided at one end of the support member 4, a convenient fixing mechanism is provided inside the base 1, the convenient fixing mechanism includes internal and external fixing members provided inside the base 1, the internal and external fixing members include a groove 6 opened on the upper end surface of the base 1, and a plug is fixedly installed on the lower end surface of the tray 3. Plate 7, the plug plate 7 is inserted into the inside of the groove 6, the outer surface of the base 1 is provided with a notch 8, the inside of the notch 8 is slidably connected with a lever 9, a transmission plate 10 is provided inside the base 1, and a slide groove 11 is provided on the front end surface of the transmission plate 10. A slide rod 12 is fixedly installed on the inner wall of the base 1, and the slide rod 12 is slidably connected to the slide groove 11. A fixed plate 14 is fixedly installed at one end of the transmission plate 10, and the fixed plate 14 is fixedly connected to one end of the lever 9. A spring 13 is fixedly installed between the fixed plate 14 and the inner wall of the base 1.

[0030] The internal and external fixing parts also include a reciprocating screw 15 that is rotatably connected to the inner part of the base 1, a gear 17 is fixedly installed on the outer surface of the reciprocating screw 15, and a rack 16 is fixedly installed on the upper end surface of the transmission plate 10, and the rack 16 is meshed with the gear 17.

[0031] The screw groove on the outer surface of the reciprocating screw rod 15 is a bidirectional screw groove, and the inside of the gear one 17 is provided with a one-way bearing.

[0032] The outer surface of the reciprocating screw rod 15 is spirally connected with two threaded sleeves 18 on both sides, the outer surface of the threaded sleeve 18 is rotatably connected with a connecting rod 19, the inside of the groove 6 is provided with a sliding groove two 21 at the lower end surface, the inside of the sliding groove two 21 is slidably connected with an inner clamping plate 22, the lower end surface of the inner clamping plate 22 is fixedly installed with a top block 20, and the two groups of connecting rods 19 are rotatably connected with the top block 20.

[0033] The connecting rod 19, the top block 20, the inner clamping plate 22 and the sliding groove two 21 are correspondingly provided with two groups and are symmetrically arranged.

[0034] The outer surface of the two groups of threaded sleeves 18 is fixedly installed with an outer clamping plate 23 on the upper side, and the two inner walls of the groove 6 are provided with a notch two 24 corresponding to the two groups of outer clamping plates 23. Each group of outer clamping plates 23 is slidably connected with the corresponding notch two 24.

[0035] When it is necessary to quickly install the tray 3, first, the plug-in plate 7 on the tray 3 is inserted into the groove 6 on the bearing platform 1, and then the lever 9 is manually actuated to displace the transmission plate 10. The lever 9 will immediately return to its original position under the action of the spring one 13, so the transmission plate 10 will also reset, but the gear one 17 will not drive the reciprocating screw rod 15 to rotate under the action of the one-way bearing. Similarly, the gear two 28 will not drive the rotating rod 29 to rotate under the action of the one-way bearing, and the transmission plate 10 will displace the rack one 16 and the rack two 27 synchronously, and the gear one 17 on the reciprocating screw rod 15 is engaged with the rack one 16 and rotates the reciprocating screw rod 15 under the action of the one-way bearing. The two groups of threaded sleeves 18 spirally connected with the outer surface of the reciprocating screw rod 15 will approach each other, and each will displace a group of outer clamping plates 23 to clamp and fix the plug-in plate 7 on the tray 3. In addition, each group of threaded sleeves 18 will displace two groups of connecting rods 19, and the connecting rods 19 on the same side will be rotatably connected with the corresponding top block 20. Therefore, under the joint action of the two groups of threaded sleeves 18, in cooperation with the four groups of connecting rods 19, the inner clamping plate 22 on the two groups of top blocks 20 will displace in the inside of the sliding groove two 21 to the two sides, and then tightly contact with the plug-in plate 7 to internally support and fix it, in cooperation with the outer clamping plate 23 clamped and fixed on the outside, to achieve the effect of internal and external double-directional fixation.

[0036] The convenient fixing mechanism further comprises a locking member arranged at the inner edge of the bearing platform 1, the locking member comprising a rotating shaft 25 rotatably connected with the lower end surface of the bearing platform 1, the upper end of the rotating shaft 25 is fixedly installed with a gear disc 26, one side of the gear disc 26 is engaged with a rack two 27, and the rack two 27 is fixedly connected with the transmission plate 10.

[0037] One side of the toothed disc 26 is engaged with a gear 28, and a rotating rod 29 is fixedly mounted on the upper end surface of the gear 28. A support 2 30 is fixedly mounted on the inner wall of the base 1. The rotating rod 29 is rotatably connected to the support 2 30. A protrusion 1 31 is fixedly mounted on the upper end of the rotating rod 29, and a protrusion 2 32 is provided on one side of the protrusion 1 31. A one-way bearing is provided inside the gear 2 28.

[0038] A support member 3 33 is fixedly installed on the inner upper end surface of the base 1, and an insertion rod 34 is slidably connected to the lower end of the support member 33. One end of the insertion rod 34 is fixedly connected to the protrusion 2 32. A spring 2 35 is fixedly installed between the protrusion 2 32 and the support member 3 33. The spring 2 35 is sleeved on the outer surface of the insertion rod 34, and the groove 6, the inserting plate 7 and the inner splint 22 are all provided with a slot 36 corresponding to the insertion rod 34.

[0039] The toothed disc 26 is meshed with the rack 27, so the toothed disc 26 will rotate half a circle, and the gear 2 28 on the four groups of rotating rods 29 are all meshed with the toothed disc 26, so the four groups of rotating rods 29 rotate synchronously and respectively carry their respective protrusions 1 31 to rotate, and the protrusions 1 31 and the protrusions 2 32 correspond to each other, collide and slide with each other, so that the protrusions 2 32 drive the insertion rods 34 2 to move, and the four groups of insertion rods 34 2 synchronously squeeze the springs 2 35 to move inward, so that the insertion rods 34 are inserted into each group of slots 36, locking the plug board 7 in the fixed state and enhancing the fixing effect.

[0040] The second gear 28, the rotating rod 29, the second support member 30, the first protrusion 31, the second protrusion 32, the third support member 33, the insertion rod 34, the second spring 35 and the slot 36 in the locking member are respectively provided in four groups and are dispersedly arranged in a ring shape.

[0041] When the fixation needs to be released, the lever 9 is manually toggled again, and the reciprocating screw 15 can continue to rotate. Affected by the characteristics of the reciprocating screw 15, the two sets of threaded sleeves 18 will be synchronously displaced to both sides, and the inner clamping plate 22 on the top block 20 will be displaced toward the center. The synchronous gear 28 will continue to make the rotating rod 29 carry the bump 1 31 to rotate half a circle under the action of the one-way bearing, so that the bump 1 31 is away from the bump 2 32, and then the insertion rod 34 is pulled out from the slot 36 under the action of the spring 2 35, so that the fixed state of each group of inserting plates 7 can be released. Secondly, it should be noted that the damping of the rotation support between the support member 2 30 and the rotating rod 29 is large, and the elastic potential energy of the spring 2 35 is not enough to overcome the damping, while the rotational force of the toothed disc 26 driving the gear 2 28 can overcome the damping between the support member 2 30 and the rotating rod 29.

[0042] During the process of model building and printing, due to the lack of a rigid fixation and dynamic stability control mechanism for the tray 3, the printing system has structural defects when operating at high speed. When the high-precision nozzle sprays hot-melt material according to the preset trajectory, the dynamic impact force generated by the material deposition and the combined force formed by the mechanical movement of the equipment will be transmitted to the base of the tray 3 through the printing platform. The traditional device only relies on simple snap fasteners or gravity adsorption fixation methods, which is difficult to effectively offset the asymmetric stress distribution in the X / Y / Z three-axis directions. This stress imbalance will not only cause instantaneous displacement of the tray 3 at the millimeter level, but also cause a gradual deviation between the printing base and the preset coordinates due to the cumulative effect of the stacking of materials layer by layer. Especially when performing printing of complex curved surfaces or suspended structures, the alternating load formed by the high-speed reciprocating motion of the nozzle and the cooling and contraction of the material will intensify the micro-vibration of the tray 3, causing the molded parts to close. The interlayer bonding strength of the key parts decreases. What is more serious is that this base instability will resonate with the natural frequency of the equipment, further amplifying the positioning deviation of the print head, and ultimately leading to irreversible geometric distortion of the key features of the precision components. Therefore, this solution achieves the purpose of rapid installation and disassembly of the tray 3 by designing a convenient fixing mechanism. The use of inner and outer double-layer fixing parts ensures the installation speed while also ensuring its stability, effectively avoiding any shaking of the tray 3 during the printing process, thereby ensuring the high-precision completion of the printing operation. In order to further enhance the fixing effect, a locking part is specially provided to make the entire fixing system more firm and reliable, greatly improving the convenience and safety of use, and meeting the modern printing needs of efficient and precise printing. Such a design not only improves work efficiency, but also simplifies the operating process, providing great convenience for users.

[0043] Instructions for use: When the tray 3 needs to be installed quickly, first insert the insert plate 7 on the tray 3 into the groove 6 on the base 1, and then manually move the lever 9 to displace the transmission plate 10. The lever 9 will immediately return to its original position under the action of the spring 13, so the transmission plate 10 will also be reset, but the gear 17 will not drive the reciprocating screw 15 to rotate when the transmission plate 10 is reset under the action of the one-way bearing. Similarly, the gear 2 28 will not drive the rotating rod 29 to rotate under the action of the one-way bearing. The transmission plate 10 will carry the rack 16 and the rack 2 27 to displace synchronously, and the gear 17 on the reciprocating screw 15 will mesh with the rack 16, and under the action of the one-way bearing, the reciprocating screw 15 will be moved. When the reciprocating screw 15 rotates, the thread groove on the outer surface of the reciprocating screw 15 is a bidirectional thread groove. Therefore, the two sets of threaded sleeves 18 connected by the spiral transmission on the outer surface of the reciprocating screw 15 will approach each other, and respectively carry a set of outer splints 23 to move, thereby clamping and fixing the inserting plate 7 on the tray 3. Secondly, each set of the two sets of threaded sleeves 18 will carry two sets of connecting rods 19 to move, and the connecting rods 19 on the same side will be rotatably connected with the corresponding top block 20. Therefore, under the joint action of the two sets of threaded sleeves 18, the inner splints 22 on the two sets of top blocks 20 of the four sets of connecting rods 19 are displaced to both sides inside the second slide groove 21, and then tightly adhere to the inserting plate 7 for internal support and fixation, and cooperate with the outer splints 23 fixed by the two sets of external clamps to achieve the effect of internal and external bidirectional fixation;

[0044] Secondly, the toothed disc 26 is meshed with the rack 27, so the toothed disc 26 rotates half a circle, and the gear 28 on the four groups of rotating rods 29 are all meshed with the toothed disc 26, so the four groups of rotating rods 29 rotate synchronously, and respectively carry their respective protrusions 1 31 to rotate, and the protrusions 1 31 correspond to the protrusions 2 32, collide and slide with each other, so that the protrusions 2 32 drive the insertion rods 34 2 to move, and the four groups of insertion rods 34 2 synchronously squeeze the springs 2 35 to move inward, so that the insertion rods 34 are inserted into the respective groups of slots 36, thereby locking the plug board 7 in the fixed state and strengthening the fixing effect;

[0045] When the fixation needs to be released, the lever 9 is manually toggled again, and the reciprocating screw 15 can continue to rotate. Affected by the characteristics of the reciprocating screw 15, the two sets of threaded sleeves 18 will be synchronously displaced to both sides, and the inner clamping plate 22 on the top block 20 will be displaced toward the center. The synchronous gear 28 will continue to make the rotating rod 29 carry the bump 1 31 to rotate half a circle under the action of the one-way bearing, so that the bump 1 31 is away from the bump 2 32, and then the insertion rod 34 is pulled out from the slot 36 under the action of the spring 2 35, so that the fixed state of each group of inserting plates 7 can be released. Secondly, it should be noted that the damping of the rotation support between the support member 2 30 and the rotating rod 29 is large, and the elastic potential energy of the spring 2 35 is not enough to overcome the damping, while the rotational force of the toothed disc 26 driving the gear 2 28 can overcome the damping between the support member 2 30 and the rotating rod 29.

[0046] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A three-dimensional model device for architectural engineering design, comprising a base (1), wherein a plurality of support legs (2) are fixedly mounted on the outer edge of the lower end surface of the base (1), and characterized in that: A tray (3) is provided on the upper side of the support (1), a support member (4) is fixedly installed on the outer surface of the support (1), a three-dimensional printing device (5) is provided at one end of the support member (4), a convenient fixing mechanism is provided inside the support (1), the convenient fixing mechanism includes internal and external fixing members provided inside the support (1), the internal and external fixing members include a groove (6) provided on the upper end surface of the support (1), an insert plate (7) is fixedly installed on the lower end surface of the tray (3), the insert plate (7) is plugged into the inside of the groove (6), a notch (8) is provided on the outer surface of the support (1), the inside of the notch (8) A shift rod (9) is slidably connected, a transmission plate (10) is provided inside the support (1), a slide groove (11) is provided on the front end surface of the transmission plate (10), a slide rod (12) is fixedly installed on the inner wall of the support (1), the slide rod (12) is slidably connected to the slide groove (11), a fixed plate (14) is fixedly installed on one end of the transmission plate (10), the fixed plate (14) is fixedly connected to one end of the shift rod (9), a spring (13) is fixedly installed between the fixed plate (14) and the inner wall of the support (1), the internal and external fixings also include a reciprocating screw rod (15) rotatably connected to the inside of the support (1), the reciprocating screw rod The outer surface of the rod (15) is fixedly mounted with a gear 1 (17), the upper end surface of the transmission plate (10) is fixedly mounted with a rack 1 (16), the rack 1 (16) is meshed with the gear 1 (17), the thread groove on the outer surface of the reciprocating screw (15) is a bidirectional thread groove, the interior of the gear 1 (17) is provided with a one-way bearing, both sides of the outer surface of the reciprocating screw (15) are spirally connected with a threaded sleeve (18), the outer surface of the threaded sleeve (18) is rotatably connected with a connecting rod (19), the inner lower end surface of the groove (6) is provided with a slide groove 2 (21), the interior of the slide groove 2 (21) is slidably connected with an inner clamping plate (2 2), a top block (20) is fixedly mounted on the lower end surface of the inner splint (22), and the two groups of connecting rods (19) are rotatably connected to the top block (20), and two groups of the top block (20), the inner splint (22) and the second slide groove (21) are respectively provided, and are symmetrically arranged. Four groups of connecting rods (19) are provided, and are symmetrically arranged corresponding to the two groups of top blocks (20). The outer surfaces of the two groups of threaded sleeves (18) are fixedly mounted with outer splints (23). The inner walls on both sides of the groove (6) are provided with notches (24) corresponding to the two groups of outer splints (23), and each group of outer splints (23) is slidably connected to the corresponding notch (24).

2. A three-dimensional model device for architectural engineering design according to claim 1, characterized in that: The convenient fixing mechanism further comprises a locking member arranged at the inner outer edge of the support platform (1), the locking member comprising a rotating shaft (25) rotatably connected to the inner lower end surface of the support platform (1), a toothed disc (26) being fixedly mounted on the upper end of the rotating shaft (25), a rack 2 (27) being engaged on one side of the toothed disc (26), and the rack 2 (27) being fixedly connected to the transmission plate (10).

3. The three-dimensional model device for architectural engineering design according to claim 2, characterized in that: One side of the toothed disc (26) is meshed with a second gear (28), an upper end surface of the second gear (28) is fixedly mounted with a rotating rod (29), an inner wall of the support platform (1) is fixedly mounted with a second support member (30), the rotating rod (29) is rotatably connected to the second support member (30), an upper end of the rotating rod (29) is fixedly mounted with a first protrusion (31), a side of the first protrusion (31) is provided with a second protrusion (32), and a one-way bearing is provided inside the second gear (28).

4. The three-dimensional model device for architectural engineering design according to claim 3, characterized in that: A support member 3 (33) is fixedly installed on the inner upper end surface of the support platform (1), and a plug rod (34) is slidably connected to the lower end of the support member 3 (33). One end of the plug rod (34) is fixedly connected to the protrusion 2 (32), and a spring 2 (35) is fixedly installed between the protrusion 2 (32) and the support member 3 (33). The spring 2 (35) is sleeved on the outer surface of the plug rod (34), and the groove (6), the plug plate (7) and the inner splint (22) are all provided with slots (36) corresponding to the plug rod (34).

5. The three-dimensional model device for architectural engineering design according to claim 4, characterized in that: The gear 2 (28), the rotating rod (29), the supporting member 2 (30), the protrusion 1 (31), the protrusion 2 (32), the supporting member 3 (33), the inserting rod (34), the spring 2 (35) and the slot (36) in the locking member are respectively provided in four groups and are dispersedly arranged in a ring shape.

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