A building installation platform based on BIM technology

Abstract

The present application provides a building installation platform based on BIM technology, which belongs to the field of BIM construction technology. Its technical solution is: a building installation platform based on BIM technology, including a lifting mechanism, on which a platform mechanism is arranged, and the lifting mechanism is used to control the lifting and lowering of the platform mechanism, and the platform mechanism has two working states: rotation and extension. The beneficial effects of the present application are: the present application adopts a cylinder to drive the lifting and lowering of the entire platform, which can prevent the technical problem of bending during the lifting and lowering process. At the same time, the rotating platform in the present application can rotate, and the operator does not need to frequently adjust the angle of the body. The extension plate in the present application can expand the scope of construction.

Description

Technical Field

[0001] The present application relates to the field of BIM construction technology, and in particular to a building installation platform based on BIM technology. Background Art

[0002] BIM stands for Building Information Modeling, which is a complete information model that can integrate the project information, processes and resources of different stages of the project life cycle into one model, which can be easily used by all parties involved in the project. It uses three-dimensional digital technology to simulate the real information of the building, and provides a mutually coordinated and internally consistent information model for project design and construction, so that the model can achieve the integration of design and construction, and various disciplines can work together, thereby reducing the production cost of the project and ensuring that the project is completed on time and with quality.

[0003] In order to facilitate the staff to carry out construction and installation according to the building model of BIM technology, it is usually necessary to operate with the help of a building installation platform. At present, most of the building installation platforms based on BIM technology cannot be moved and adjusted according to the needs of the operators, and the flexibility is poor. For example, the Chinese utility model with the authorization announcement number CN 210134632U and the name "A Building Installation Platform Based on BIM Technology" discloses that the stable up and down movement of the platform is adjusted by controlling the drive motor to drive the screw rod to move up and down on the threaded sleeve. However, the support platform in the public patent cannot rotate. The staff standing on the construction platform need to constantly adjust the body position in order to accurately carry out the construction. This construction method has safety hazards. In addition, the public patent can only perform local construction on the model within the platform range. When the construction is completed, the base needs to be pushed to move the platform to the required position, which requires the operator to constantly go up and down the platform. The operation is relatively cumbersome and labor-intensive.

[0004] Although there are platforms with lifting functions, such as the one disclosed in the Chinese utility model with authorization announcement number CN210256105U and titled "A Surveying and Lofting Device Based on BIM", the motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, the driven gear drives the transmission shaft to rotate, the transmission shaft drives the worms at both ends to rotate, the worm drives the worm wheel to rotate, and the worm wheel drives the corresponding lead screw to rotate during the rotation process, thereby driving the nut to move, thereby realizing the lifting function of the top plate. However, the public patent uses a lead screw transmission to drive the lifting of the top plate, but under long-distance and heavy loads, the lead screw is prone to bending.

[0005] Application Contents

[0006] The purpose of this application is to provide a building installation platform based on BIM technology to solve the technical drawbacks that the installation platform is easily bent by screw transmission, the platform cannot rotate, and only local construction can be performed on the model.

[0007] This application is achieved through the following measures:

[0008] A building installation platform based on BIM technology, comprising a lifting mechanism, on which a platform mechanism is arranged, the lifting mechanism is used to control the lifting and lowering of the platform mechanism, and the platform mechanism has two working states: rotation and extension;

[0009] The lifting mechanism comprises a bracket, a universal wheel is arranged at the bottom of the bracket, a guide rod is arranged on the top surface of the bracket, a lifting assembly is arranged on the guide rod, the lifting assembly is lifted and lowered along the guide rod, the platform mechanism is arranged on the lifting assembly, and the platform mechanism is lifted and lowered along with the lifting and lowering of the lifting assembly;

[0010] The platform mechanism includes a bottom plate, a base is arranged on the bottom plate, a worm gear transmission assembly is arranged on one side of the base, the worm gear transmission assembly is arranged on the bottom plate, a rotating seat is arranged on the base, the worm gear transmission assembly drives the rotating seat to rotate, a platform is arranged on the rotating seat, the platform rotates with the rotation of the rotating seat, a rack and pinion transmission assembly is arranged on the rotating seat, an extension plate is arranged on the rack and pinion transmission assembly, and the rack and pinion transmission assembly controls the extension and retraction of the extension plate.

[0011] Furthermore, the worm gear transmission assembly includes a worm, a worm wheel and a motor, bases are arranged relatively on the bottom plate, the worm is arranged between the bases, the motor is arranged on the worm, the motor is arranged on the outside of the base, the worm wheel is arranged on one side of the worm, and the worm wheel is meshed with the worm.

[0012] Furthermore, the rotating seat includes an upper end and a lower end, the upper end of the rotating seat includes a bottom surface and wing surfaces arranged on both sides of the bottom surface, concentric axial holes are relatively arranged on the two wing surfaces, and bearings are arranged in the axial holes, one of the wing surfaces is provided with a rack channel, the rack channel includes an upper end surface and a lower end surface, the platform is arranged on the outer side of the upper end surface, and a limiting strip is arranged on the lower end surface of the plane, and a fixing rod is arranged at the lower end of the rotating seat, and the fixing rod passes through the base and extends to the lower part of the base to form an extension part, and the extension part is provided with the worm gear.

[0013] Furthermore, the base is a U-shaped base, comprising a bottom end and raised portions symmetrically arranged at both ends of the bottom end, a through hole is arranged on the bottom end, the fixing rod is arranged in the through hole, and the gear rack transmission assembly is arranged on the two raised portions of the base.

[0014] Furthermore, the rack and pinion transmission assembly includes a gear ring, which is fixed on two raised portions of the base, and a connecting rod is provided in the axial holes of the two opposite wing surfaces of the rotating seat, and the connecting rod is provided in the bearing, and the connecting rod passes through the rotating seat and is provided with a driving gear at one end, and a driven gear at the other end, and the driven gear is provided between the two wing surfaces of the rotating seat. The rotating seat rotates through the connecting rod to drive the driving gear to revolve along the gear ring, and the teeth of the driving gear mesh with the teeth of the gear ring. The driving gear revolves while rotating along the gear ring. The self-rotation of the driving gear drives the connecting rod to rotate, and then drives the driven gear to rotate. A rack is arranged in the rack channel of the rotating seat, and the teeth of the rack face the driven gear. The teeth of the rack are meshed with the teeth of the driven gear. The rotation of the driven gear drives the rack to reciprocate in the rack channel. A blocking block A is arranged at the bottom of the platform, and a blocking block B is arranged at one end of the rack. When the blocking block B contacts the blocking block A, the rack stops moving, and the extension plate is arranged on the side of the rack opposite to the teeth, and the extension plate is arranged on the lower end surface of the platform.

[0015] Furthermore, guide rails are symmetrically provided at the bottom of the extension plate, sliders are provided on the guide rails, cross arms are provided between the sliders, legs are provided at the bottom of the sliders, one end of the legs is fixedly connected to the slider, and the other end is provided with a roller, the roller is provided on the bottom plate, a fixing plate is provided on the rack at the end opposite to the end where the blocking block B is provided, an electric push rod is provided between the fixing plate and the cross arm, the push rod seat of the electric push rod is fixedly connected to the fixing plate, and the piston rod of the electric push rod is fixedly connected to the cross arm.

[0016] Furthermore, the top surface of the bracket is a quadrilateral, the guide rods are arranged at the four corners of the top surface, the top surface of the bracket includes a left end and a right end, the guide rods include two groups, each group of the guide rods includes two, one group of the guide rods is arranged at the front and rear ends of the left end of the top surface, and another group of the guide rods is arranged at the front and rear ends of the right end of the top surface, the lifting assembly includes a lifting frame and a cylinder, and the upper end of the lifting frame is symmetrically provided with limit plates, one of the limit plates is straddled on one group of the guide rods, and the other limit plate is straddled on the other The guide rod of the group is arranged, and a lifting plate is arranged at the lower end of the lifting frame, and the lifting plate is arranged between the symmetrically arranged limit plates, and the left and right ends of the lifting plate are arranged on the guide rod, and the bottom plate is arranged on the lifting plate, and a pull rod is arranged between the limit plate and the lifting plate, one end of the pull rod is fixedly connected to the limit plate, and the other end is fixedly connected to the lifting plate, the cylinder is arranged between the top surface of the bracket and the limit plate, the cylinder seat of the cylinder is fixedly connected to the top surface, and the piston rod of the cylinder is fixedly connected to the limit plate.

[0017] The beneficial effects of this application are:

[0018] 1. The lifting mechanism is used to control the lifting of the platform, and can be used for construction at construction locations of different heights. The bracket has a load-bearing function. The universal wheel at the bottom of the bracket can realize the movement of the entire installation platform. The entire installation platform can be moved to the required position as needed. The guide rod has a guiding function, which can ensure that the lifting component can be lifted and lowered in the vertical direction. The platform mechanism has a load-bearing function, and the bottom plate has a bottoming function, providing an installation place for the setting of various components of the platform mechanism. The base is used to install the rotating seat. The worm gear transmission assembly has a relatively large transmission ratio and can run smoothly. It has its own self-locking performance. The function of the worm gear is to drive the rotating seat to rotate, and the rotation of the rotating seat drives the platform to rotate. This is a state in which the platform has rotation. The gear rack transmission assembly has a large load-bearing capacity, high transmission accuracy, and can be connected and continued in unlimited length, with a high transmission speed. The rack drives the extension plate to extend and retract, which can expand the range of the platform and thus expand the scope of construction.

[0019] 2. The function of the base is to support the worm. The base and the worm have a load-bearing function. The motor provides a constant power source, and the function of the worm is to drive the worm wheel to rotate.

[0020] 3. The rotation of the worm gear drives the rotating seat to rotate. The two wing surfaces of the rotating seat provide installation positions for the connecting rod. The bearing in the shaft hole can ensure the rotation of the connecting rod. The function of the rack channel is to install the rack. The rack provides a place for the installation of the platform. The function of the limit bar is to prevent the rack from falling in the limit channel. The function of the fixed rod is to install the worm gear. The rotation of the worm gear drives the upper end of the rotating seat to rotate through the fixed rod, thereby driving the platform to rotate and controlling the reciprocating motion of the rack in the rack channel.

[0021] 4. The function of the bottom end of the base is to fix the fixing rod, and the function of the raised part is to set up the gear ring and be fixedly connected with the gear ring. The gear ring provides a trajectory for the revolution of the driving gear and can ensure the rotation of the driving gear, thereby driving the driven gear to rotate.

[0022] 5. The connecting rod is arranged in the bearing, and the purpose is to drive the connecting rod to rotate through the rotation of the driving gear, and then control the rotation of the driven gear, wherein the driving gear can revolve or rotate, and the driven gear is arranged between the two wing surfaces of the rotating seat to prevent the driven gear from falling off due to the centrifugal force generated by the rotation of the connecting rod. The function of the driven gear is to drive the rack to reciprocate in the rack channel, and then control the telescopic function of the extension plate. The function of the blocking block A is to control the stroke of the rack movement and prevent the rack from escaping from the restriction of the rack channel. The extension plate is arranged on the lower end surface of the platform. When the range of the platform itself can meet the construction requirements, the extension plate does not occupy space. When the range of the platform itself cannot meet the construction requirements, the extension plate expands the range of the platform and also expands the range of construction.

[0023] 6. The purpose of setting a guide track at the bottom of the extension plate is to install the slider and provide guidance and limiting functions for the movement of the slider. The crossbar between the sliders and the fixed plate at one end of the rack are used to install the electric push rod. The leg has a supporting function and a load-bearing function. When the operator stands on the extension plate, it has a load-bearing function for the operator. The rotating seat in the present application rotates, thereby driving the platform to rotate, and also driving the rack to rotate, and then driving the extension plate to rotate. The extension plate performs a circular motion. Therefore, an extension plate can be set at one end of the rack, and there is no need to set extension plates at both ends of the rack because the extension plate is retractable. Therefore, in order to ensure the center of gravity position of the leg on the extension plate, the electric push rod can push the position of the slider on the guide track, thereby controlling the position of the leg on the extension plate. The roller at the bottom of the leg is used to prevent the leg from damaging the bottom plate as the extension plate rotates, and to reduce friction during rotation.

[0024] 7. The function of the guide rod is to ensure that the platform mechanism can be lifted and lowered in the vertical direction to prevent the platform mechanism from tilting. The guide rod also provides guidance for the lifting and lowering of the limit plate. The cylinder is used to control the lifting and lowering of the limit plate. The pull rod has a force transmission function and is also used to fix the limit plate and the lifting plate. Through the action of the pull rod, the cylinder drives the limit plate and then drives the lifting and lowering of the lifting plate.

[0025] 8. The present application adopts a cylinder to drive the lifting of the entire platform, which can prevent the technical problem of bending during the lifting process. At the same time, the rotating platform in the present application can rotate, and the operator does not need to frequently adjust the body angle. The extension plate in the present application can expand the scope of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of this application.

[0027] Figure 2 It is a structural diagram of the lifting mechanism.

[0028] Figure 3 It is a structural diagram of the platform mechanism.

[0029] Figure 4 This is a schematic diagram of the platform structure after removing the platform.

[0030] Figure 5 This is a schematic diagram of the platform mechanism structure after removing the platform and extension plate.

[0031] Figure 6 It is a structural schematic diagram of the rotating seat.

[0032] Figure 7 This is a schematic diagram of the structure of the extension plate.

[0033] The reference numerals are: 1. lifting mechanism; 11. bracket; 12. universal wheel; 13. guide rod; 14. lifting assembly; 141. lifting frame; 1411. limit plate; 1412. lifting plate; 1413. pull rod; 142. cylinder; 2. platform mechanism; 21. bottom plate; 22. base; 221. bottom end; 222. raised part; 23. worm gear transmission assembly; 231. worm; 232. worm wheel; 233. motor; 234. base; 24. rotating seat; 241. bottom surface; 24 2. Wing surface; 2421. Shaft hole; 243. Rack channel; 2431. Limiting strip; 244. Fixing rod; 25. Rack and pinion transmission assembly; 251. Ring gear; 252. Connecting rod; 253. Driving gear; 254. Driven gear; 255. Rack; 2551. Fixing plate; 256. Block B; 26. Platform; 261. Block A; 27. Extension plate; 271. Guide rail; 272. Slider; 273. Cross arm; 274. Leg; 275. Roller; 276. Electric push rod. DETAILED DESCRIPTION

[0034] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0035] See also Figure 1 and Figure 2 The present application is a building installation platform based on BIM technology, including a lifting mechanism 1, the lifting mechanism 1 includes a bracket 11, a universal wheel 12 is arranged at the bottom of the bracket 11, a guide rod 13 is arranged on the top surface of the bracket 11, a lifting assembly 14 is arranged on the guide rod 13, the lifting assembly 14 is lifted and lowered along the guide rod 13, a platform mechanism 2 is arranged on the lifting assembly 14, and the platform mechanism 2 is lifted and lowered as the lifting assembly 14 is lifted and lowered; the top surface of the bracket 11 is a quadrilateral, and the guide rods 13 are arranged at the four corners of the top surface. The top surface of the bracket 11 includes a left end and a right end. The guide rods 13 include two groups, and each group of guide rods 13 includes two. One group of guide rods 13 is arranged at the front and rear ends of the left end of the top surface, and another group of guide rods 13 is arranged at the front and rear ends of the right end of the top surface. The lifting assembly 14 includes a lifting frame 141 and a cylinder 142. The lifting frame 1 A limit plate 1411 is symmetrically arranged on the upper end of 41, one of the limit plates 1411 is bridged on a group of guide rods 13, and the other limit plate 1411 is bridged on another group of guide rods 13. A lifting plate 1412 is arranged on the lower end of the lifting frame 141, and the lifting plate 1412 is arranged between the symmetrically arranged limit plates 1411. The left and right ends of the lifting plate 1412 are arranged on the guide rods 13, and a bottom plate 21 is arranged on the lifting plate 1412. A pull rod 1413 is arranged between the limit plates 1411 and the lifting plates 1412, one end of the pull rod 1413 is fixedly connected to the limit plate 1411, and the other end is fixedly connected to the lifting plate 1412. A cylinder 142 is arranged between the top surface of the bracket 11 and the limit plate 1411, the cylinder seat of the cylinder 142 is fixedly connected to the top surface, and the piston rod of the cylinder 142 is fixedly connected to the limit plate 1411.

[0036] The working principle of the lifting mechanism of the present application is: in order to move the entire installation platform to the position where construction is required, a universal wheel is set at the bottom of the bracket, and the universal wheel here has a braking function, wherein the braking function of the universal wheel is a prior art and will not be repeated again. The bracket has a load-bearing function and bears the weight of the entire installation platform. The top surface of the bracket is set into a square structure, and the square structure has four corners. A guide rod is installed at each of the four corners. Therefore, four guide rods are set on the top surface of the entire bracket. The top surface is divided into a left end and a right end for the convenience of description. The left end is divided into a front end and a rear end. A first guide rod is set at a right angle where the rear end is combined with the left end, and a second guide rod is set at a right angle where the front end is combined with the left end. Therefore, the left end has a first guide rod and a second guide rod, and the first guide rod and the second guide rod are used as a group; the right end is divided into a front end and a rear end. A third guide rod is set at a right angle where the rear end is combined with the right end, and a fourth guide rod is set at the combination of the front end and the right end, and the third guide rod and the fourth guide rod are used as another group. The guide rod here is preferably a rectangular column. The lifting frame includes an upper end and a lower end, a limit plate is arranged at the left end of the upper end, and another limit plate is arranged at the right end of the upper end, and the two limit plates are arranged symmetrically relative to the center plane of the top surface of the bracket, and the limit plate includes a crossbeam and angle irons arranged at both ends of the crossbeam, wherein the crossbeam is arranged horizontally on the outside of the first guide rod and the second guide rod, and a hanging ear is arranged on the crossbeam, and the hanging ear here is used to fix the cylinder piston rod, and the two angle irons protect the two adjacent surfaces of the guide rod. The lifting and lowering of the cylinder piston rod can push the crossbeam up and down, and then drive the angle iron to move along the vertical direction of the guide rod. A lifting plate is arranged between the two limit plates, and the purpose of the lifting plate is to place the platform mechanism. The lifting plate and the limit plate are connected by a pull rod, and the pull rod fixes the limit plate and the lifting plate into a complete whole, so the lifting plate rises and falls with the lifting and lowering of the limit plate.

[0037] See also Figure 1 , Figure 3-Figure 7 The lifting mechanism 1 is provided with a platform mechanism 2, and the lifting mechanism 1 is used to control the lifting of the platform mechanism 2, and the platform mechanism 2 has two working states: rotation and extension;

[0038] The platform mechanism 2 includes a bottom plate 21, a base 22 is arranged on the bottom plate 21, a worm gear transmission assembly 23 is arranged on one side of the base 22, the worm gear transmission assembly 23 is arranged on the bottom plate 21, a rotating base 24 is arranged on the base 22, the worm gear transmission assembly 23 drives the rotating base 24 to rotate, a platform 26 is arranged on the rotating base 24, the platform 26 rotates with the rotation of the rotating base 24, a rack and pinion transmission assembly 25 is arranged on the rotating base 24, an extension plate 27 is arranged on the rack and pinion transmission assembly 25, and the rack and pinion transmission assembly 25 controls the extension and retraction of the extension plate 27.

[0039] The worm gear transmission assembly 23 includes a worm 231, a worm wheel 232 and a motor 233. A base 234 is arranged opposite to the bottom plate 21, and a worm 231 is arranged between the bases 234. The motor 233 is arranged on the worm 231, and the motor 233 is arranged on the outside of the base 234. A worm wheel 232 is arranged on one side of the worm 231, and the worm wheel 232 is meshed with the worm 231.

[0040] The rotating seat 24 includes an upper end and a lower end. The upper end of the rotating seat 24 includes a bottom surface 241 and wing surfaces 242 arranged on both sides of the bottom surface 241. Concentric shaft holes 2421 are relatively arranged on the two wing surfaces 242. A bearing is arranged in the shaft hole 2421. A rack channel 243 is arranged on one of the wing surfaces 242. The rack channel 243 includes an upper end surface and a lower end surface. A platform 26 is arranged on the outer side of the upper end surface. A limit strip 2431 is arranged on the planar lower end surface. A fixing rod 244 is arranged at the lower end of the rotating seat 24. The fixing rod 244 passes through the base 22 and extends to the lower part of the base 22 to form an extension portion. The extension portion is provided with a worm gear 232.

[0041] The base 22 is a U-shaped base, and the base 22 includes a bottom end 221 and protrusions 222 symmetrically arranged at both ends of the bottom end 221. A through hole is arranged on the bottom end 221, and a fixing rod 244 is arranged in the through hole. A gear rack transmission assembly 25 is arranged on the two protrusions 222 of the base 22.

[0042] The gear rack transmission assembly 25 includes a gear ring 251, which is fixed on the two protrusions 222 of the base 22. A connecting rod 252 is provided in the shaft hole 2421 of the two opposite wing surfaces 242 of the rotating seat 24. The connecting rod 252 is set in the bearing. The connecting rod 252 passes through the rotating seat 24. A driving gear 253 is provided at one end, and a driven gear 254 is provided at the other end. The driven gear 254 is set between the two wing surfaces 242 of the rotating seat 24. The rotating seat 24 rotates through the connecting rod 252 to drive the driving gear 253 to revolve along the gear ring 251. The teeth of the driving gear 253 mesh with the teeth of the gear ring 251. The driving gear 253 revolves while rotating along the gear ring 251. The rotation of the driven gear 253 drives the connecting rod 252 to rotate, and then drives the driven gear 254 to rotate. A rack 255 is arranged in the rack channel 243 of the rotating seat 24, and the teeth of the rack 255 face the driven gear 254. The teeth of the rack 255 mesh with the teeth of the driven gear 254. The rotation of the driven gear 254 drives the rack 255 to reciprocate in the rack channel 243. A blocking block A261 is arranged at the bottom of the platform 26, and a blocking block B256 is arranged at one end of the rack 255. When the blocking block B256 contacts the blocking block A261, the rack 255 stops moving, and an extension plate 27 is arranged on the side of the rack 255 opposite to the teeth, and the extension plate 27 is arranged on the lower end surface of the platform 26.

[0043] A guide rail 271 is symmetrically arranged at the bottom of the extension plate 27, a slider 272 is arranged on the guide rail 271, a cross arm 273 is arranged between the sliders 272, a support leg 274 is arranged at the bottom of the slider 272, one end of the support leg 274 is fixedly connected to the slider 272, and the other end is provided with a roller 275, the roller 275 is arranged on the bottom plate 21, a fixing plate 2551 is arranged on the rack 255 at the end opposite to the end where the blocking block B256 is arranged, an electric push rod 276 is arranged between the fixing plate 2551 and the cross arm 273, the push rod seat of the electric push rod 276 is fixedly connected to the fixing plate 2551, and the piston rod of the electric push rod 276 is fixedly connected to the cross arm 273.

[0044] The working principle of the platform mechanism in the present application is as follows: the platform mechanism includes a base plate, and the function of the base plate is to facilitate the installation of various components of the platform mechanism. There are preferably two bases on the base plate, and the two bases are used to set up a worm gear. A motor is arranged at one end of the worm gear, and the output shaft of the motor rotates to drive the worm gear to rotate. Because the worm gear is meshed with the worm wheel, the rotation of the worm gear drives the entire worm wheel to rotate. It can be seen from the description that the worm wheel is fixed on a fixed rod at the lower end of the rotating seat and is fixedly connected to the fixed rod. Therefore, the rotation of the worm wheel drives the fixed rod to rotate. Because the fixed rod is arranged at the lower end of the rotating seat, the upper end of the rotating seat is also rotating through the transmission effect of the fixed rod. Therefore, the entire rotating seat is centered on the axis of the fixed rod and makes circular motion around the axis. Axial holes are arranged on the two wing surfaces of the rotating seat, and bearings are arranged in the axial holes. Therefore, the connecting rod can rotate in the bearing, and the power for the rotation of the connecting rod comes from the driving gear.

[0045] A base is set on the bottom plate. The function of the base is to install the entire gear rack transmission assembly. First, the upper gear ring is fixedly installed on the base. The teeth of the gear ring are set on the upper end face of the gear ring. The rotating seat rotates to drive the connecting rod. One end of the connecting rod is fixedly installed with the driving gear, so the driving gear revolves around the entire gear ring. Because the teeth of the driving gear are meshed with the teeth of the gear ring, the driving gear rotates while revolving. The driving gear is fixedly connected to the connecting rod, so the driving gear rotates and drives the connecting rod to rotate. Because the other end of the connecting rod is fixedly installed with the driven gear, the driven gear can rotate. The driven gear is meshed with the rack, so the driven gear rotates and drives the rack to reciprocate in the rack channel. A platform is set on the upper end face of the rack channel. Because the rotating seat is rotating, the platform is also rotating. Because the rack is set in the rack channel, the horizontal height of the end face of the rack without teeth is lower than the height of the upper end face of the rack channel, so the height of the extension plate is lower than the height of the platform. In order to control the formation of the reciprocating motion of the rack, a limit block A is set at the bottom of the platform, and the shape of the limit block A is a right triangle. A limit block B is set at one end of the rack, and the shape of the limit block B is a right triangle. When the hypotenuse of the limit block A is in contact with the hypotenuse of the limit block B, the rack no longer moves. Preferably, in order to prevent the rack from excessively moving in the direction with the extension plate, the thickness of the limit plate is greater than the width of the rack channel. The extension plate is set on the lower end surface of the platform. When the range of the platform itself can meet the construction requirements, the extension plate does not occupy space. When the range of the platform itself cannot meet the construction requirements, the extension plate expands the range of the platform and also expands the range of construction. When the platform rotates, the rack rotates, and the extension plate rotates as well. An extension plate is set at one end of the rack, and there is no need to set extension plates at both ends of the rack because the extension plate is retractable. Therefore, in order to ensure the center of gravity position of the leg on the extension plate, the electric push rod can push the position of the slider on the guide track, thereby controlling the position of the leg on the extension plate. The roller at the bottom of the leg is set to prevent the leg from damaging the bottom plate as the extension plate rotates, and also to reduce friction during rotation.

[0046] The platform mechanism in the present application uses only one motor, which can realize the rotation function of the platform and the reciprocating motion of the rack, thereby saving electric energy and realizing different working states with the least energy.

[0047] Technical features not described in the present application can be achieved through or by adopting existing technologies, and will not be elaborated here. Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present application should also fall within the scope of protection of the present application.

Claims

1. A building installation platform based on BIM technology, characterized in that: It comprises a lifting mechanism (1), wherein a platform mechanism (2) is arranged on the lifting mechanism (1), wherein the lifting mechanism (1) is used to control the lifting and lowering of the platform mechanism (2), and the platform mechanism (2) has two working states: rotation and extension; The lifting mechanism (1) comprises a bracket (11), a universal wheel (12) is arranged at the bottom of the bracket (11), a guide rod (13) is arranged on the top surface of the bracket (11), a lifting assembly (14) is arranged on the guide rod (13), the lifting assembly (14) is lifted and lowered along the guide rod (13), the platform mechanism (2) is arranged on the lifting assembly (14), and the platform mechanism (2) is lifted and lowered as the lifting assembly (14) is lifted and lowered; The platform mechanism (2) comprises a bottom plate (21), a base (22) is arranged on the bottom plate (21), a worm gear transmission assembly (23) is arranged on one side of the base (22), the worm gear transmission assembly (23) is arranged on the bottom plate (21), a rotating seat (24) is arranged on the base (22), the worm gear transmission assembly (23) drives the rotating seat (24) to rotate, a platform (26) is arranged on the rotating seat (24), the platform (26) rotates with the rotation of the rotating seat (24), a gear rack transmission assembly (25) is arranged on the rotating seat (24), an extension plate (27) is arranged on the gear rack transmission assembly (25), and the gear rack transmission assembly (25) controls the extension and retraction of the extension plate (27); The worm gear transmission assembly (23) comprises a worm (231), a worm wheel (232) and a motor (233); a base (234) is arranged on the bottom plate (21) opposite to each other; the worm (231) is arranged between the bases (234); the motor (233) is arranged on the worm (231); the motor (233) is arranged outside the base (234); the worm wheel (232) is arranged on one side of the worm (231); and the worm wheel (232) is meshed with the worm (231); The rotating seat (24) comprises an upper end and a lower end, the upper end of the rotating seat (24) comprises a bottom surface (241) and wing surfaces (242) arranged on both sides of the bottom surface (241), concentric shaft holes (2421) are arranged on the two wing surfaces (242) opposite to each other, a bearing is arranged in the shaft hole (2421), a rack channel (243) is arranged on one of the wing surfaces (242), the rack channel (243) comprises an upper end surface and a lower end surface, the platform (26) is arranged on the outer side of the upper end surface of the rack channel (243), and a limit strip (2431) is arranged on the lower end surface of the rack channel (243), and a fixing rod (244) is arranged at the lower end of the rotating seat (24), the fixing rod (244) passes through the base (22) and extends to the lower part of the base (22) to form an extension portion, and the extension portion is provided with the worm gear (232); The base (22) is a U-shaped base, and the base (22) comprises a bottom end (221) and raised portions (222) symmetrically arranged at both ends of the bottom end (221); a through hole is arranged on the bottom end (221) of the base (22), the fixing rod (244) is arranged in the through hole, and the gear rack transmission assembly (25) is arranged on the two raised portions (222) of the base (22); The rack and pinion transmission assembly (25) comprises a gear ring (251), the gear ring (251) being fixed on two protrusions (222) of the base (22), a connecting rod (252) being arranged in the shaft holes (2421) of the two opposite wing surfaces (242) of the rotating seat (24), the connecting rod (252) being arranged in a bearing, the connecting rod (252) passing through the rotating seat (24), one end of which is provided with a driving gear (253), and the other end of which is provided with a A driven gear (254) is provided between two wing surfaces (242) of the rotating seat (24). The rotating seat (24) rotates through the connecting rod (252) to drive the driving gear (253) to revolve along the gear ring (251). The teeth of the driving gear (253) mesh with the teeth of the gear ring (251). The driving gear (253) revolves while rotating along the gear ring (251). The driven gear (253) rotates to drive the connecting rod (252) to rotate, thereby driving the driven gear (254) to rotate. A rack (255) is arranged in the rack channel (243) of the rotating seat (24). The teeth of the rack (255) face the driven gear (254). The teeth of the rack (255) mesh with the teeth of the driven gear (254). The driven gear (254) rotates to drive the rack (255) to rotate in the driven gear (254). The rack (255) reciprocates in the rack channel (243), a blocking block A (261) is provided at the bottom of the platform (26), and a blocking block B (256) is provided at one end of the rack (255). When the blocking block B (256) contacts the blocking block A (261), the rack (255) stops moving. The side of the rack (255) opposite to the teeth is provided with the extension plate (27), and the extension plate (27) is provided on the lower end surface of the platform (26); A guide rail (271) is symmetrically arranged at the bottom of the extension plate (27), a slider (272) is arranged on the guide rail (271), a cross arm (273) is arranged between the sliders (272), a support leg (274) is arranged at the bottom of the slider (272), one end of the support leg (274) is fixedly connected to the slider (272), and the other end is provided with a roller (275), and the roller (275) is arranged on the bottom plate (21), and a fixing plate (2551) is arranged on the rack (255) at the end opposite to the end where the blocking block B (256) is arranged, an electric push rod (276) is arranged between the fixing plate (2551) and the cross arm (273), the push rod seat of the electric push rod (276) is fixedly connected to the fixing plate (2551), and the piston rod of the electric push rod (276) is fixedly connected to the cross arm (273); The top surface of the bracket (11) is a quadrilateral, and the guide rods (13) are arranged at the four corners of the top surface. The top surface of the bracket (11) includes a left end and a right end. The guide rods (13) include two groups, and each group of the guide rods (13) includes two rods. One group of the guide rods (13) is arranged at the front and rear ends of the left end of the top surface, and another group of the guide rods (13) is arranged at the front and rear ends of the right end of the top surface. The lifting component (14) includes a lifting frame (141) and a cylinder (142). The upper end of the lifting frame (141) is symmetrically provided with a limiting plate (1411), one of the limiting plates (1411) is bridged on one group of the guide rods (13), and the other limiting plate (1411) is bridged on the other group of the guide rods (13). The lower end of the lifting frame (141) A lifting plate (1412) is provided, and the lifting plate (1412) is arranged between the symmetrically arranged limiting plates (1411). The left and right ends of the lifting plate (1412) are arranged on the guide rod (13). The bottom plate (21) is arranged on the lifting plate (1412). A pull rod (1413) is provided between the limiting plate (1411) and the lifting plate (1412). One end of the pull rod (1413) is fixedly connected to the limiting plate (1411), and the other end is fixedly connected to the lifting plate (1412). The cylinder (142) is provided between the top surface of the bracket (11) and the limiting plate (1411), and the cylinder seat of the cylinder (142) is fixedly connected to the top surface. The piston rod of the cylinder (142) is fixedly connected to the limiting plate (1411).

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