CN109077461B

CN109077461B - Architectural design extends platform

Info

Publication number: CN109077461B
Application number: CN201811162193.5A
Authority: CN
Inventors: 不公告发明人
Original assignee: Jincheng Hewei Planning And Design Group Co ltd
Current assignee: Jincheng Hewei planning and Design Group Co.,Ltd.
Priority date: 2018-09-30
Filing date: 2018-09-30
Publication date: 2021-04-13
Anticipated expiration: 2038-09-30
Also published as: CN109077461A

Abstract

The utility model provides a building design extends platform, the left side of support frame is equipped with the sculpture table, and the sculpture table is connected with linear drive device, deflection device, and the crossing side of sculpture table and drawing table place face is called limit one, and linear drive device drives the moving direction of sculpture table and is consistent with the limit all the time, deflection device drives the sculpture table to deflect to the drawing table intermittently, deflection device has locking mechanism, and locking mechanism locks the deflection device when deflection device does not drive the sculpture table and deflects and then prevents that the sculpture table from taking place the deflection this moment. The drawing table plate, the carving table plate and the tablecloth are displayed to be used in front of a user according to different requirements, and different requirements of the user in different times are met. The efficiency of the design is improved. The ratchet wheel and the pawl are matched to prevent the display tray from falling and protect the computer display screen. The lifting edge of the carving table plate has angular deviation, so that the space is saved to the maximum extent.

Description

Architectural design extends platform

Technical Field

The invention relates to the technical field of construction design, in particular to a construction design expansion platform.

Background

With the progress of scientific society and the development of economic society, the construction industry and the design of the construction at present are greatly changed. The period of the building is shorter and shorter at present, and meanwhile, the time required by the building design is also required to be shorter and shorter. However, the existing building design is often simple in design and single in function, and is not suitable for efficient building design. At present, building design does not leave the manufacturing of a computer and a display model, meanwhile, a building platform also needs to meet the requirements of drawing and previewing of drawings on the building platform, different using functions have different requirements on the desktop of the design platform, the desktops of multiple building design platforms need to meet different requirements according to different uses, the best experience can be guaranteed, the design efficiency is guaranteed, the paper amplitude of the drawings used for building design is large at times, and the drawing desk plate needs to be adjusted in time according to the needs.

Disclosure of Invention

In view of the above situation, in order to overcome the defects of the prior art, the invention aims to provide a multifunctional design platform, which can meet the requirements of drawing, can expand the size of a desktop according to the drawing requirements, occupies small space, is convenient to use, improves the service efficiency of architectural design, and can meet the requirements of computer and manual drawing.

The building design expansion platform comprises a support frame and a drawing table fixed on the upper portion of the support frame, wherein an engraving table is arranged on the left side of the support frame and connected with a linear driving device and a deflection device, the side where the engraving table and the drawing table are located is called as a side I, the linear driving device drives the engraving table to move in the same direction with the side I, the deflection device intermittently drives the engraving table to deflect towards the drawing table, the deflection device is provided with a locking mechanism, and the locking mechanism locks the deflection device when the deflection device does not drive the engraving table to deflect, so that the engraving table is prevented from deflecting at the moment.

Preferably, the linear driving device comprises a side plate rack fixed on one side of the engraving table plate close to the support frame, the side plate rack is parallel to the side, a side plate gear is meshed with the side plate rack, and a shaft of the side plate gear is connected with a steering motor.

Preferably, deflection device includes the steering spindle, installs steering gear on the steering spindle, steering gear and curb plate gear engagement, and the steering spindle has initiative bevel gear shaft through the retarder connection, is fixed with first half gear on the initiative bevel gear shaft, and first half gear engagement has second half gear, and one side that second half gear deviates from first half gear is fixed with the fixture block, is equipped with the card strip parallel with the curb plate rack on the sculpture table, and the card strip passes fixture block and fixture block sliding connection, second half gear is installed on the support frame through the locking axle, the axis of curb plate gear and the axis collineation of locking axle.

Preferably, the locking mechanism comprises a driving bevel gear, the driving bevel gear is meshed with a driven bevel gear, the driven bevel gear is arranged on the support frame through a driven bevel gear shaft, the driven bevel gear shaft is vertically arranged, a locking driving gear is arranged on the driven bevel gear shaft, the locking driving gear is meshed with a locking driven gear, the locking driven gear is arranged on the support frame through a locking control shaft, a locking disc is arranged on the locking control shaft, the locking shaft is provided with a clamping part, the clamping part is circumferentially provided with a plurality of fixing grooves which are arranged at intervals, the side surface of the locking disc is provided with a section of arc-shaped locking bulge, the locking bulge is matched with the fixing grooves, the locking bulge can extend into the fixing grooves to limit the rotation of the locking shaft, when the first half gear is meshed with the second half gear, the locking protrusion is separated from the fixing groove, and when the first half gear is separated from the second half gear, the locking protrusion extends into the fixing groove.

Preferably, a tablecloth roller and a traction shaft are arranged at the lower part of the drawing table plate, tablecloth is wound on the tablecloth roller, the free end of the tablecloth is connected with at least one traction rope, the traction rope is wound on the traction shaft by winding the upper part of the table top, the tablecloth roller and the traction shaft are matched to rotate to take back or spread the tablecloth on the drawing table plate, a tray is arranged at the rear side of the support frame, a vertical rack is fixed at the lower part of the tray, a driving gear is meshed with the vertical rack, the driving gear is meshed with a first gear, the first gear is coaxially connected with a driving shaft, the driving shaft is connected with a control shaft through a one-way clutch, a control gear is mounted on the control shaft, the control gear is meshed with a horizontal control rack, the control rack is connected with a tension spring in the same direction as the control rack, the control rack is connected with a pawl structure, a, Drive gear drives vertical rack rebound, when the driving shaft forward rotation, the driving shaft can not drive the control shaft through one way clutch and rotate, the extension spring makes the pawl and the ratchet cooperation of pawl structure through the control rack this moment, ratchet and pawl complex one-way transmission direction and driving gear axle pivoted direction that the driving shaft forward rotation drove are opposite, when the driving shaft antiport, the driving shaft drives the control shaft earlier and rotates, control shaft and control gear rotate make control rack remove drive pawl structure and ratchet break away from, then drive first gear revolve, the corresponding spreading of tray rising tablecloth is on the drawing table.

The drawing table plate, the carving table plate and the tablecloth are displayed in front of a user to be used according to different requirements, and different requirements of the user in different times are met. The efficiency of the design is improved. The ratchet wheel and the pawl are matched to prevent the display tray from falling and protect the computer display screen. The lifting edge of the carving table plate has angular deviation, so that the space is saved to the maximum extent.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a top view of fig. 1 in accordance with the present invention.

Fig. 3 is a left side view of fig. 1 of the present invention.

FIG. 4 is a partial schematic view of the present invention shown in FIG. 3A.

FIG. 5 is an enlarged view of the present invention at FIG. 4B.

FIG. 6 is a schematic view of the present invention taken along the line C-C of FIG. 5.

Fig. 7 is an enlarged view of the invention at fig. 6D.

FIG. 8 is a schematic view of the first gear of the present invention engaged with the drive shaft.

Fig. 9 is a schematic view of a lock shaft of the present invention.

FIG. 10 is an enlarged view of FIG. 1E of the present invention.

FIG. 11 is an enlarged view of FIG. 2F according to the present invention.

FIG. 12 is an enlarged view of the invention at FIG. 11G.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

The building design expansion platform is characterized in that an engraving table plate 38 is arranged on the left side of the support frame 1, the engraving table plate 38 is connected with a linear driving device and a deflection device, the side edge where the engraving table plate 38 and the drawing table plate 2 intersect is called as an edge I, the linear driving device drives the engraving table plate 38 to move in the same direction with the edge all the time, the deflection device intermittently drives the engraving table plate 38 to deflect towards the drawing table plate 2, the deflection device is provided with a locking mechanism, and when the deflection device does not drive the engraving table plate 38 to deflect, the locking mechanism locks the deflection device so as to prevent the engraving table plate 38 from deflecting at the moment.

The linear driving device comprises a side plate rack 39 fixed on one side of the carving table plate 38 close to the support frame 1, the side plate rack 39 is parallel to the side, a side plate gear 40 is meshed with the side plate rack 39, and a shaft of the side plate gear 40 is connected with a steering motor 41.

The deflection device comprises a steering shaft 42, a steering gear 43 is mounted on the steering shaft 42, the steering gear 43 is meshed with a side plate gear 40, the steering shaft 42 is connected with a driving bevel gear 50 shaft 44 through a speed reducer, a first half gear 45 is fixed on the driving bevel gear 50 shaft 44, a second half gear 46 is meshed with the first half gear 45, a fixture block 47 is fixed on one side, away from the first half gear 45, of the second half gear 46, a fixture strip 48 parallel to the side plate rack 39 is arranged on the carving table plate 38, the fixture strip 48 penetrates through the fixture block 47 to be in sliding connection with the fixture block 47, the second half gear 46 is mounted on the support frame 1 through a locking shaft 49, and the axis of the side plate gear 40 is collinear with the axis of the locking shaft 49.

The locking mechanism comprises a driving bevel gear 50, a driven bevel gear 51 is meshed with the driving bevel gear 50, the driven bevel gear 51 is mounted on the support frame 1 through a driven bevel gear shaft 52, the driven bevel gear shaft 52 is vertically arranged, a locking driving gear 53 is mounted on the driven bevel gear shaft 52, the locking driving gear 53 is meshed with a locking driven gear 54, the locking driven gear 54 is mounted on the support frame 1 through a locking control shaft 55, a locking disc 56 is mounted on the locking control shaft 55, a clamping part 57 is arranged on the locking shaft 49, a plurality of fixing grooves 58 are circumferentially arranged on the clamping part 57, an arc-shaped locking bulge 59 is arranged on the side surface of the locking disc 56, the locking bulge 59 is matched with the fixing grooves 58, the locking bulge 59 can extend into the fixing grooves 58 to limit the rotation of the locking shaft 49, and when the first half gear 45 is meshed with the second half gear 46, the locking bulge 59 is, when the first half gear 45 is disengaged from the second half gear 46, the locking projection 59 projects into the fixing groove 58.

The steering motor 41 is provided with a locking device, which locks the output shaft of the motor when the motor is in operation and locks the output shaft of the steering motor 41 when the steering motor 41 stops operating. The forward moving direction of the steering motor 41 is the direction in which the steering motor 41 drives the side plates to move upward through the side plate gear 40 and the side plate rack 39. The motor drives the side plate gear 40 to rotate forward, and the side plate gear 40 drives the side plate rack 39 to move. The locking bar 48 and the locking block 47 cooperate to position and support the pair of engraving tables 38. Meanwhile, the side plate gear 40 drives the steering gear 43 and the steering shaft 42 to rotate, the steering shaft 42 drives the driving bevel gear 50 shaft 44 through the reducer, the bevel gear shaft of the driving shaft 11 intermittently drives the second half gear 46 and the locking shaft 49 to rotate through the first half gear 45, the second half gear 46 drives the carving table 38 to deflect through the fixture block 47 and the fixture strip 48, the driving bevel gear 50 on the driving bevel gear 50 shaft 44 drives the locking control shaft 55 to rotate through the driven bevel gear 51, the locking driving gear 53 and the locking driven gear 54, the locking control shaft 55 rotates to drive the locking disc 56 to rotate, when the first half gear 45 and the second half gear 46 do not drive the locking shaft 49 to rotate, the locking protrusion 59 on the locking turntable is matched with the fixed groove 58, when the first half gear 45 is just meshed with the second half gear 46, the locking protrusion 59 is separated from the locking groove, when the first half gear 45 is separated from the second half gear 46, the locking projection 59 enters the locking groove, and the locking projection 59 is matched with the locking groove to prevent the first half gear 45 and the locking shaft 49 from rotating, so that the first table plate is controlled to rotate. The first half gear 45 and the second half gear 46 intermittently rotate the locking shaft 49 once, and the locking shaft 49 rotates by a deflection angle between the adjacent fixing grooves 58. The engraving table plate 38 can intermittently rotate while the side plate gear 40 and the side plate rack 39 drive the engraving table plate 38 to move upwards. The engraving table 38 is raised to a designated position, and the engraving table 38 is deflected from the initial vertical direction to the horizontal direction and placed on the drawing table 2. When the steering motor 41 rotates reversely, the engraving table 38 is driven to move downward, and the engraving table 38 rotates reversely, so that the engraving table 38 is reset.

The drawing table is characterized in that a table cloth roller 3 and a traction shaft 4 are arranged at the lower part of a drawing table plate 2, table cloth 5 is wound on the table cloth roller 3, the free end of the table cloth 5 is connected with at least one traction rope 6, the traction rope 6 is wound on the traction shaft 4 by winding the upper part of a table top, the table cloth roller 3 and the traction shaft 4 are matched to rotate to withdraw or spread the table cloth 5 on the drawing table plate 2, a tray 7 is arranged at the rear side of a support frame 1, a vertical rack 8 is fixed at the lower part of the tray 7, the vertical rack 8 is meshed with a driving gear 9, the driving gear 9 is meshed with a first gear 10, the first gear 10 is coaxially connected with a driving shaft 11, the driving shaft 11 is connected with a control shaft 13 through a one-way clutch 12, a control gear 14 is arranged on the control shaft 13, the control gear 14 is meshed with a horizontal control rack 15, the control rack 15 is connected with a tension, a ratchet wheel 18 is arranged on a shaft of a driving gear 9 of the driving gear 9, a driving shaft 11 rotates forwards and drives a vertical rack 8 to move upwards through a first gear 10, the driving gear 9 drives a vertical rack 8 to move upwards, when the driving shaft 11 rotates forwards, the driving shaft 11 cannot drive a control shaft 13 to rotate through a one-way clutch 12, a tension spring 16 enables a pawl 19 of a pawl structure 17 to be matched with the ratchet wheel 18 through a control rack 15, the one-way transmission direction of the matching of the ratchet wheel 18 and the pawl 19 is opposite to the rotating direction of the driving gear 9 driven by the forward rotation of the driving shaft 11, when the driving shaft 11 rotates backwards, the driving shaft 11 drives the control shaft 13 to rotate firstly, the control rack 15 is driven to move by the rotation of the control shaft 13 and the control gear 14 to drive the pawl structure 17 to be separated from the ratchet wheel 18, then the first gear 10 is driven to.

The through hole 20 that first gear 10 set up through it overlaps on driving shaft 11, is equipped with curved protruding groove 21 on the through hole 20 inner wall, is equipped with drive arch 22 on the driving shaft 11, and drive arch 22 correspondingly stretches into protruding groove 21 in, leaves the gap between the lateral wall in drive arch 22 and protruding groove 21, is equipped with the gear base on the drawing table 2, and first gear 10 rotates with the gear base to be connected.

The driving shaft 11 rotates in the positive direction, the driving shaft 11 cannot transmit power to the control shaft 13 through the one-way clutch 12, the control rack 15 controls the rack 15 to move under the action of the tension spring 16, the control rack 15 moves to drive the pawl 19 of the pawl structure 17 to move towards the ratchet wheel 18, and when the tension spring 16 drives the control rack 15 to reach the limit position, the pawl 19 of the pawl structure 17 is meshed with the ratchet wheel 18. Meanwhile, the driving shaft 11 rotates in the forward direction, the driving shaft 11 drives the driving gear 9 to rotate through the first gear, and then the tray 7 fixedly connected with the vertical rack 8 and the upper portion of the vertical rack 8 is driven to move upwards. The rotation of the drive gear 9 shaft of the drive gear 9 caused by the forward rotation of the drive shaft 11 is in the same direction as the unidirectional rotation of the drive gear 9 shaft allowed by the pawl structure 17 in cooperation with the ratchet wheel 18. Ratchet wheel 18 consisting of pawl structure 17 and ratchet wheel 18 the pawl structure 17 will not affect the rotation of the drive gear 9 shaft and drive gear 9. At this time, if the driving gear 9 and the driving shaft 11 stop rotating, the tray 7 and the vertical rack 8 have a tendency to descend, and the tray 7 and the vertical rack 8 descend to cause the driving gear 9 and the driving gear 9 to rotate, and the ratchet wheel 18 and the pawl structure 17 allow the rotation in this direction, so that the ratchet wheel 18 and the pawl structure 17 can effectively prevent the vertical rack 8 and the tray 7 from descending at this time. The driving shaft 11 rotates in a positive direction and stops rotating at any time, and the pawl structure 17 and the ratchet wheel 18 are matched to prevent the tray 7 from falling. The driving gear 9 is arranged on the shaft of the driving gear 9, and the shaft of the driving gear 9 is arranged on the support frame 1 through a bearing seat. The sleeve is coaxially fixed on the first gear, is rotatably connected with the driving shaft 11, is rotatably connected with the gear base, and is matched with the gear base to form a rotating connection structure of the first gear and the gear base.

In order to realize that the control rack 15 can move horizontally and ensure the stability of the control rack 15 in the movement process, a guide rod 26 is fixedly connected to the control rack 15, a control base 27 is fixed on the support frame 1, the guide rod 26 penetrates through the control base 27 and is in sliding connection with the control base 27, the tension spring 16 is sleeved on the guide rod 26, and two ends of the tension spring 16 are respectively fixed on the control rack 15 and the control base 27. The guide rod 26 is away from the control rack 15, the guide rod 26 is inserted into the control base 27 and is connected with the control base 27 in a sliding mode, and the tension spring 16 is sleeved on the guide rod 26, so that the tension spring 16 pulls the control rack 15, and the acting force of the tension spring 16 on the control rack 15 is ensured to be in the horizontal pull rod direction. In order to facilitate the matching between the pawl structure 17 and the ratchet wheel 18, the pawl structure 17 includes a pawl housing 28, the pawl housing 28 is connected with the control rack 15 through a transmission frame 29, the pawl 19 is slidably connected with the pawl housing 28, a pawl rod 30 on one side of the pawl 19 facing away from the ratchet wheel 18, the pawl rod 30 penetrates out of the pawl housing 28 and is slidably connected with the pawl housing 28, and a pawl pressure spring 31 which is sleeved on the pawl rod 30 and enables the pawl 19 to press towards the ratchet wheel 18 is arranged between the pawl 19 and the pawl housing 28. After the control rack 15 is pulled by the tension spring 16 to move to the extreme position towards the control base 27, at this time, the pawl 19 is matched with the ratchet wheel 18, and the pawl compression spring 31 enables the pawl 19 to press towards the ratchet wheel 18, so that the pawl 19 is matched with the ratchet wheel 18.

In order to make the one-way clutch 12 have more stable performance, the one-way clutch 12 comprises a one-way ratchet wheel 32 fixedly connected with the driving shaft 11 and an outer sleeve 33 coaxially and fixedly connected with the control shaft 13, the one-way ratchet wheel 32 extends into the outer sleeve 33, and balls 34 are placed in ratchet grooves of the one-way ratchet wheel 32. When the driving shaft 11 starts to rotate in the forward direction, the tension spring 16 drives the control gear 14 to rotate through the control rack 15, and then drives the control shaft 13 to rotate, the rotating speed of the driving shaft 11 is greater than the speed of the control shaft 13, the steering of the driving shaft 11 and the steering of the control shaft 13 are the same, and the control gear 14 drives the control shaft 13 to rotate without being limited by the one-way clutch 12.

In order to make the expansion of tablecloth 5 better with the rising complex of tray 7, traction shaft 4 is parallel with driving shaft 11, and traction shaft 4 is closer to driving shaft 11 than 5 rods of tablecloth, and traction shaft 4 is fixed with the carry over pinch rolls 23 that quantity and 6 quantity of haulage rope equal, and the one end winding that haulage rope 6 deviates from the table is on the carry over pinch rolls 23 that correspond, and haulage rope 6 has two and the symmetry setting in 5 both sides of tablecloth. The traction shaft 4 rotates to drive the traction roller 23 to rotate, the traction roller 23 drives the traction rope 6 to be wound on the traction roller 23, and then the traction rope 6 pulls the tablecloth 5 to be unfolded on the drawing table board 2.

In order to reduce a power source, the tablecloth roller 3 is connected with the traction shaft 4 through a belt pulley mechanism, the traction shaft 4 is provided with a traction gear 24, the driving shaft 11 is provided with a second gear 25 meshed with the traction gear 24, and when the driving shaft 11 rotates in the positive direction, the driving shaft 11 drives the traction roller 23 to wind the traction rope 6 through the second gear 25 and the traction gear 24, so that the tablecloth 5 is unfolded on the drawing table plate 2. The driving shaft 11 drives the traction shaft 4 to rotate through the second gear 25 and the traction gear 24, and then drives the traction roller 23 or the tablecloth roller 3 to rotate, namely when the driving shaft 11 rotates in the forward direction, the traction shaft 4 and the traction roller 23 are driven to wind the traction rope 6, and the tablecloth 5 is unfolded on the drawing table plate 2. When the driving shaft 11 rotates reversely, the table cloth roller 3 is driven to rotate through the belt pulley mechanism, and the table cloth 5 is retracted and wound on the table cloth roller 3.

The belt pulley mechanism comprises a driving belt pulley 35 fixedly connected with the traction shaft 4 and a driven belt pulley 36 coaxially connected with the tablecloth roller 3, the driving belt pulley 35 and the driven belt pulley 36 are connected through a transmission belt 37, and when acting force between the driving belt pulley 35 and the transmission belt 37 is large, the driving belt pulley 35 and the transmission belt 37 can slide relatively. The driving shaft 11 rotates forward to drive the traction shaft 4 and the traction roller 23 to rotate in a winding mode to wind the traction rope 6, the traction shaft 4 drives the drawing table plate 2 through the belt pulley mechanism, two parallel table plate grooves are formed in the drawing table plate, and the traction rope 6 penetrates through the corresponding table plate grooves. When the tablecloth 5 is contracted on the tablecloth roller 3, because the pulling rope 6 is placed in the table groove, the pulling rope 6 does not affect the drawing paper on the drawing table 2.

When the invention is used and a computer is needed, the driving device drives the display tray 7 to ascend, and simultaneously, the tablecloth 5 is automatically paved on the drawing table plate 2. When the building drawing or the research drawing needs to be manually drawn on the drawing table plate 2, the tablecloth 5 on the drawing table plate 2 is retracted, the display tray 7 moves downwards, and the carving table plate 38 is located at a vertical position. When the building model needs to be made on the carving table 38, the carving table 38 can be horizontally placed on the drawing table 2 under the driving of the rotating motor.

The drawing table plate 2, the carving table plate 38 and the tablecloth 5 are displayed in front of a user according to different requirements, and different requirements of the user in different times are met. The efficiency of the design is improved. Ratchet 18 and pawl 19 cooperate to prevent the display tray 7 from falling and protect the computer display. The carving table plate 38 can be shifted in angle while being lifted, so that the space is saved to the maximum extent.

The above-mentioned embodiments do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention by those skilled in the art should be included in the protection scope defined by the claims of the present invention without departing from the design concept of the present invention.

Claims

1. The architectural design expansion platform comprises a support frame (1) and a drawing table plate (2) fixed on the upper portion of the support frame (1), and is characterized in that a carving table plate (38) is arranged on the left side of the support frame (1), the carving table plate (38) is connected with a linear driving device and a deflection device, the side edge where the carving table plate (38) and the drawing table plate (2) are located intersect is called as a first edge, the linear driving device drives the carving table plate (38) to move in the direction which is consistent with the first edge all the time, the deflection device intermittently drives the carving table plate (38) to deflect towards the drawing table plate (2), the deflection device is provided with a locking mechanism, and when the deflection device does not drive the carving table plate (38) to deflect, the locking mechanism locks the deflection device so as to prevent the carving table plate (38) from deflecting at the moment;

the linear driving device comprises a side plate rack (39) fixed on one side, close to the support frame (1), of the carving table plate (38), the side plate rack (39) is parallel to the first side, a side plate gear (40) is meshed with the side plate rack (39), and a steering motor (41) is connected with a shaft of the side plate gear (40);

the deflection device comprises a steering shaft (42), a steering gear (43) is installed on the steering shaft (42), the steering gear (43) is meshed with a side plate gear (40), the steering shaft (42) is connected with a driving bevel gear (50) shaft (44) through a speed reducer, a first half gear (45) is fixed on the driving bevel gear (50) shaft (44), a second half gear (46) is meshed with the first half gear (45), a clamping block (47) is fixed on one side, away from the first half gear (45), of the second half gear (46), a clamping strip (48) parallel to a side plate rack (39) is arranged on the carving table plate (38), the clamping strip (48) penetrates through the clamping block (47) to be in sliding connection with the clamping block (47), the second half gear (46) is installed on the support frame (1) through a locking shaft (49), and the axis of the side plate gear (40) is collinear with the axis of the locking shaft (49);

the locking mechanism comprises a driving bevel gear (50), the driving bevel gear (50) is meshed with a driven bevel gear (51), the driven bevel gear (51) is installed on a support frame (1) through a driven bevel gear shaft (52), the driven bevel gear shaft (52) is vertically arranged, a locking driving gear 53 is installed on the driven bevel gear shaft (52), the locking driving gear (53) is meshed with a locking driven gear (54), the locking driven gear (54) is installed on the support frame (1) through a locking control shaft (55), a locking disc (56) is installed on the locking control shaft (55), a clamping part (57) is arranged on a locking shaft (49), a plurality of fixing grooves (58) which are arranged at intervals are circumferentially arranged on the clamping part (57), a section of arc-shaped locking bulge (59) is arranged on the side surface of the locking disc (56), and the locking bulge (59) is matched with the fixing grooves (, the locking protrusion (59) can extend into the fixing groove (58) to limit the rotation of the locking shaft (49), when the first half gear (45) is meshed with the second half gear (46), the locking protrusion (59) is separated from the fixing groove (58), and when the first half gear (45) is separated from the second half gear (46), the locking protrusion (59) extends into the fixing groove (58).

2. The architectural design expansion platform according to claim 1, wherein a tablecloth roller (3) and a traction shaft (4) are arranged at the lower part of the drawing table plate (2), tablecloth (5) is wound on the tablecloth roller (3), at least one traction rope (6) is connected to the free end of the tablecloth (5), the traction rope (6) is wound on the traction shaft (4) around the upper part of the table top, the tablecloth roller (3) and the traction shaft (4) are matched and rotated to withdraw or spread the tablecloth (5) on the drawing table plate (2), a tray (7) is arranged at the rear side of the support frame (1), a vertical rack (8) is fixed at the lower part of the tray (7), the vertical rack (8) is meshed with a driving gear (9), the driving gear (9) is meshed with a first gear (10), the first gear (10) is coaxially connected with a driving shaft (11), the driving shaft (11) is connected with a control shaft (13) through a one-way clutch (12), a control gear (14) is installed on the control shaft (13), the control gear (14) is meshed with a horizontal control rack (15), the control rack (15) is connected with a tension spring (16) with the same direction as the control rack (15), the control rack (15) is connected with a pawl structure (17), a ratchet wheel (18) is installed on a drive gear (9) shaft of the drive gear (9), the drive shaft (11) rotates forwards and drives a vertical rack (8) to move upwards through a first gear (10) and the drive gear (9), when the drive shaft (11) rotates forwards, the drive shaft (11) cannot drive the control shaft (13) to rotate through a one-way clutch (12), the tension spring (16) enables a pawl (19) of the pawl structure (17) to be matched with the ratchet wheel (18) through the control rack (15), the one-way transmission direction of the ratchet wheel (18) and the pawl (19) is opposite to the rotation direction of the drive gear (9) shaft driven by the forward rotation of the drive shaft (11, when the driving shaft (11) rotates reversely, the driving shaft (11) drives the control shaft (13) to rotate, the control shaft (13) and the control gear (14) rotate to enable the control rack (15) to move to drive the pawl structure (17) to be separated from the ratchet wheel (18), then the first gear (10) is driven to rotate, and the tray (7) rises the tablecloth (5) and is correspondingly spread on the drawing table plate (2).

3. The architectural design expansion platform according to claim 2, wherein the first gear (10) is sleeved on the driving shaft (11) through a through hole (20) formed in the first gear, an arc-shaped protruding groove (21) is formed in the inner wall of the through hole (20), a driving protrusion (22) is formed in the driving shaft (11), the driving protrusion (22) correspondingly extends into the protruding groove (21), a gap is reserved between the driving protrusion (22) and the side wall of the protruding groove (21), a gear base is arranged on the drawing table plate (2), and the first gear (10) is rotatably connected with the gear base.