Three-dimensional model device special for building engineering design

Abstract

The invention discloses a three-dimensional model device special for constructional engineering design, and belongs to the technical field of three-dimensional model devices, the three-dimensional model device comprises a bearing platform, a plurality of sets of supporting legs are fixedly mounted at the outer edge of the lower end face of the bearing platform, and a tray is arranged on the upper side of the bearing platform. According to the scheme, by designing the convenient fixing mechanism, the purpose that the tray can be quickly mounted and dismounted is achieved, the stability of the tray is ensured while the mounting speed is ensured by utilizing the inner and outer double-layer fixing pieces, and any possible shaking of the tray in the printing process is effectively avoided, so that high-precision completion of printing operation is ensured, and the printing efficiency is improved. In order to further enhance the fixing effect, a locking piece is particularly arranged, so that the whole fixing system is firmer and more reliable, the use convenience and safety are greatly improved, the efficient and accurate modern printing requirements are met, and due to the design, the working efficiency is improved, the operation process is simplified, and great convenience is provided for users.

Description

Technical Field

[0001] The present invention relates to the technical field of three-dimensional model devices, and more specifically 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 the construction of a building, 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 so that things can be better understood, and special three-dimensional model devices need to be used for design.

[0003] A Chinese patent with the authorization publication number CN217640498U discloses a three-dimensional model device specially used 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 height of the model meets the design requirements. It can also adjust the distance between the indicator and the right-angle clamping plate to design a model of fixed height, thereby ensuring the accuracy of the model design and being easy to use.

[0004] Although this special 3D model device for architectural engineering design can adjust the distance between the indicator and the right-angle pallet, like the existing equipment, during the process of model building and printing, due to the lack of rigid fixation and dynamic stability control mechanism for the tray, 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 tray base through the printing platform. The traditional device only relies on simple buckles or gravity adsorption fixation methods, which is difficult to effectively offset the X / Y / Z three-axis directions. The asymmetric stress distribution on the surface of the tray will not only cause millimeter-level instantaneous displacement of the tray, but also cause a gradual deviation between the printed 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 shrinkage of the material will aggravate the slight 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] A three-dimensional model device specially used for architectural engineering design comprises a pedestal, 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 arranged on the upper side of the pedestal, a support member 1 is fixedly installed on the outer surface of the pedestal, a three-dimensional printing device is arranged on one end of the support member 1, a convenient fixing mechanism is arranged inside the pedestal, the convenient fixing mechanism comprises inner and outer fixing members arranged inside the pedestal, the inner and outer fixing members comprise 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 plugged into the inside of the groove, a notch 1 is provided on the outer surface of the pedestal, a lever is slidably connected inside the notch 1, a transmission plate is arranged inside the pedestal, a slide groove 1 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 1, a fixed plate is fixedly installed on one end of the transmission plate, the fixed plate is fixedly connected to one end of the slide rod, and a spring 1 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 inner 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 arranged inside the gear one.

[0010] The outer surface of the reciprocating screw rod is spirally connected with threaded sleeves on both sides, and the outer surface of the threaded sleeve is rotatably connected with a connecting rod. The inner lower end surface of the groove is provided with a second slide groove, and the inner sliding connection of the second slide groove is an inner clamping plate, and the lower end surface of the inner clamping plate 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 clamping plates, and the inner walls on both sides of the groove are provided with slots 2 corresponding to the two groups of outer clamping plates, and each group of outer clamping plates 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 second rack is meshed with one side of the toothed disc, and the second rack is fixedly connected to the transmission plate.

[0014] One side of the toothed disc is meshed 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, a bump 1 is fixedly mounted on the upper end of the rotating rod, a bump 2 is arranged on one side of the bump 1, and a one-way bearing is arranged inside 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 plug plate and the inner clamping plate are all provided with slots corresponding to the plug rod.

[0016] The second gear, the rotating rod, the second support member, the first convex block, the second convex block, the third support member, the inserting rod, the second spring and the slot in the locking member are respectively arranged 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 quick 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 job. In order to further enhance the fixing effect, a locking part is also 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 accurate printing. This design not only improves work efficiency, but also simplifies the operation process, providing 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 The enlarged schematic diagram at A in the middle;

[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 a locking member of the present invention;

[0024] Figure 6 For the present invention Figure 5 The enlarged schematic diagram at 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. Base; 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 slot 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 slot 2; 22. Inner plate; 23. Outer plate; 24. Notch 2; 25. Rotating shaft; 26. Toothed 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, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention 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 arranged 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 arranged at one end of the support member 4, a convenient fixing mechanism is arranged inside the base 1, the convenient fixing mechanism includes inner and outer fixing members arranged inside the base 1, the inner and outer 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, a notch 8 is provided on the outer surface of the support 1, a lever 9 is slidably connected inside the notch 8, 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 at one end of the transmission plate 10, the fixed plate 14 is fixedly connected to one end of the lever 9, and a spring 13 is fixedly installed between the fixed plate 14 and the inner wall of the support 1.

[0030] The internal and external fixing parts also include a reciprocating screw 15 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 thread groove on the outer surface of the reciprocating screw rod 15 is a bidirectional thread groove, and a one-way bearing is arranged inside the gear 17.

[0032] Both sides of the outer surface of the reciprocating screw rod 15 are spirally connected with threaded sleeves 18, and 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 second slide groove 21, and the inner part of the second slide groove 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 sets of connecting rods 19 are rotatably connected to the top block 20.

[0033] The connecting rod 19, the top block 20, the inner clamping plate 22 and the second slide groove 21 are respectively provided in two groups and are symmetrically arranged.

[0034] The outer surfaces of the two sets of threaded sleeves 18 are fixedly mounted with outer clamping plates 23 , and the inner walls on both sides of the groove 6 are provided with second notches 24 corresponding to the two sets of outer clamping plates 23 , and each set of outer clamping plates 23 is slidably connected to the corresponding second notches 24 .

[0035] When the tray 3 needs to be installed quickly, first insert the plug plate 7 on the tray 3 into the groove 6 on the base 1, and then manually push 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 under the action of the one-way bearing when the transmission plate 10 is reset. 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 1 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 the reciprocating screw 15 will rotate under the action of the one-way bearing. The reciprocating screw rod 15 is a two-way threaded groove because the thread groove on the outer surface is a two-way thread groove. Therefore, the two groups of threaded sleeves 18 connected by the spiral transmission on the outer surface of the reciprocating screw rod 15 will approach each other, and carry a group of outer clamping plates 23 to move respectively, so as to clamp and fix the inserting plate 7 on the tray 3. Secondly, each group of the two groups of threaded sleeves 18 will carry two groups 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 groups of threaded sleeves 18, the inner clamping plates 22 on the two groups of top blocks 20 of the four groups of connecting rods 19 are displaced to both sides inside the second slide groove 21, and then are tightly attached to the inserting plate 7 for internal support and fixation, and cooperate with the outer clamping plates 23 fixed by two groups of external clamps to achieve the effect of internal and external bidirectional fixation.

[0036] The convenient fixing mechanism also includes a locking piece arranged at the inner outer edge of the support platform 1, and the locking piece includes a rotating shaft 25 rotatably connected to the lower end surface of the support platform 1. A toothed disc 26 is fixedly installed on the upper end of the rotating shaft 25. A rack 27 is meshed on one side of the toothed disc 26, and the rack 27 is fixedly connected to the transmission plate 10.

[0037] A gear 28 is meshed with one side of the toothed disc 26, a rotating rod 29 is fixedly mounted on the upper end surface of the gear 28, a supporting member 2 30 is fixedly mounted on the inner wall of the base 1, the rotating rod 29 is rotatably connected to the supporting member 2 30, a protrusion 1 31 is fixedly mounted on the upper end of the rotating rod 29, a protrusion 2 32 is arranged on one side of the protrusion 1 31, and a one-way bearing is arranged 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 a plug rod 34 is slidably connected to the lower end of the support member 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 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 clamping plate 22 are all provided with a slot 36 corresponding to the plug 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 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 own protrusions 1 31 to rotate, 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, and the plug plate 7 in the fixed state is locked to enhance 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 inserting rod 34, the second spring 35 and the slot 36 in the locking member are respectively arranged in four groups and are dispersedly arranged in a ring shape.

[0041] When it is necessary to release the fixation, the lever 9 is manually moved again to allow the reciprocating screw 15 to 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 protrusion 1 31 to rotate half a circle under the action of the one-way bearing, so that the protrusion 1 31 is away from the protrusion 2 32, and then the insertion rod 34 is pulled out of the slot 36 under the action of the spring 2 35, so that the fixing state of each group of the insertion plate 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 relatively 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] In the process of model building and printing, due to the lack of 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 composite 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-on 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 the instantaneous displacement of the tray 3 at the millimeter level, but also cause the cumulative effect of the stacking of materials layer by layer, resulting in a gradual deviation between the printing base and the preset coordinates. 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 shrinkage of the material will aggravate the slight vibration of the tray 3, causing the molded parts to close. The interlayer bonding strength at the key position 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 component. 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 fixings 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 member is specially provided to make the entire fixing system more firm and reliable, greatly improving the convenience and safety of use, and meeting the efficient and precise modern printing needs. 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 plug 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 under the action of the one-way bearing when the transmission plate 10 is reset. 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 the reciprocating screw 15 will be moved under the action of the one-way bearing. The reciprocating screw 15 rotates, because the thread groove on the outer surface is a bidirectional thread groove, 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 carry a set of outer clamping plates 23 to move respectively, and clamp and fix the plugging 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 clamping plates 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 closely attached to the plugging plate 7 for internal support and fixation, and cooperate with the outer clamping plates 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 gear 27, so the toothed disc 26 rotates half a circle, and the gear gears 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 own 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, and the plugging plate 7 in the fixed state is locked to enhance the fixing effect;

[0045] When it is necessary to release the fixation, the lever 9 is manually moved again to allow the reciprocating screw 15 to 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 protrusion 1 31 to rotate half a circle under the action of the one-way bearing, so that the protrusion 1 31 is away from the protrusion 2 32, and then the insertion rod 34 is pulled out of the slot 36 under the action of the spring 2 35, so that the fixing state of each group of the insertion plate 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 relatively 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 is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope 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), characterized in that: A tray (3) is arranged on the upper side of the support platform (1); a support member (4) is fixedly mounted on the outer surface of the support platform (1); a three-dimensional printing device (5) is arranged at one end of the support member (4); a convenient fixing mechanism is arranged inside the support platform (1); the convenient fixing mechanism comprises internal and external fixing members arranged inside the support platform (1); the internal and external fixing members comprise a groove (6) provided on the upper end surface of the support platform (1); an insert plate (7) is fixedly mounted on the lower end surface of the tray (3); the insert plate (7) is plugged into the inside of the groove (6); and a convenient fixing mechanism is arranged inside the support platform (1). A slot (8) is provided, wherein the slot (8) is internally slidably connected with a lever (9), a transmission plate (10) is provided inside the support platform (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 platform (1), the slide rod (12) is slidably connected with 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 with one end of the lever (9), and a spring (13) is fixedly installed between the fixed plate (14) and the inner wall of the support platform (1).

2. A three-dimensional model device for architectural engineering design according to claim 1, characterized in that: The internal and external fixing parts also include a reciprocating screw (15) rotatably connected to the inside of the support platform (1), a gear (17) is fixedly mounted on the outer surface of the reciprocating screw (15), and a rack (16) is fixedly mounted on the upper end surface of the transmission plate (10), and the rack (16) is meshed with the gear (17).

3. A three-dimensional model device for architectural engineering design according to claim 2, characterized in that: The thread groove on the outer surface of the reciprocating screw rod (15) is a bidirectional thread groove, and a one-way bearing is arranged inside the gear one (17).

4. A three-dimensional model device for architectural engineering design according to claim 2, characterized in that: Both sides of the outer surface of the reciprocating screw rod (15) are connected to threaded sleeves (18) in a spiral transmission manner, and the outer surface of the threaded sleeve (18) is rotatably connected to a connecting rod (19). The inner lower end surface of the groove (6) is provided with a second slide groove (21), and the inner part of the second slide groove (21) is slidably connected to an inner clamping plate (22), and a top block (20) is fixedly installed on the lower end surface of the inner clamping plate (22), and the two groups of connecting rods (19) are rotatably connected to the top block (20).

5. A three-dimensional model device for architectural engineering design according to claim 4, characterized in that: The connecting rod (19), the top block (20), the inner clamping plate (22) and the second slide groove (21) are each provided with two groups correspondingly and are symmetrically arranged.

6. A three-dimensional model device for architectural engineering design according to claim 4, characterized in that: The upper sides of the outer surfaces of the two groups of threaded sleeves (18) are fixedly mounted with outer clamping plates (23), and the inner walls on both sides of the groove (6) are provided with slots (24) corresponding to the two groups of outer clamping plates (23), and each group of outer clamping plates (23) is slidably connected to the corresponding slots (24).

7. The three-dimensional model device for architectural engineering design according to claim 1, characterized in that: The convenient fixing mechanism also includes a locking member arranged at the inner outer edge of the support platform (1), and the locking member includes a rotating shaft (25) rotatably connected to the lower end surface of the support platform (1), and a toothed disc (26) is fixedly installed on the upper end of the rotating shaft (25), and a second rack (27) is meshed on one side of the toothed disc (26), and the second rack (27) is fixedly connected to the transmission plate (10).

8. A three-dimensional model device for architectural engineering design according to claim 7, characterized in that: One side of the toothed disc (26) is meshed with a second gear (28), the upper end surface of the second gear (28) is fixedly mounted with a rotating rod (29), the 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), the upper end of the rotating rod (29) is fixedly mounted with a first protrusion (31), one 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).

9. A three-dimensional model device for architectural engineering design according to claim 8, characterized in that: A support member 3 (33) is fixedly installed on the inner upper end surface of the support platform (1), and an insertion rod (34) is slidably connected to the lower end of the support member 3 (33). One end of the insertion 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 insertion rod (34), and the groove (6), the insertion plate (7) and the inner clamping plate (22) are all provided with a slot (36) corresponding to the insertion rod (34).

10. A three-dimensional model device for architectural engineering design according to claim 9, characterized in that: 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 arranged in four groups and are dispersedly arranged in a ring shape.

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