Panel unit construction method and device for complex ceiling assembly construction

Abstract

The invention relates to a building construction technology, in particular to a panel unit construction method for complex ceiling assembly construction, which comprises the following steps of: rebuilding a net rack model, correcting a ceiling model, producing an aluminum strip plate skin unit on site, lifting and mounting a main keel, lifting and mounting an aluminum strip plate skin decoration panel and the like, each hanging point can be independently controlled, so that a main keel and an aluminum strip plate skin decoration panel can be accurately mounted, and the decoration effect consistent with that of a reconstructed model is achieved; in addition, the invention further comprises a panel unit lifting device used for the construction method, the device only needs to be controlled by one worker, one lifting point can be independently adjusted according to on-site command so as to adjust and rectify the direction of a lifting piece, all the lifting points can be integrally lifted, operation is flexible, and therefore the construction method can be smoothly carried out, and the construction efficiency is improved. And finally, efficient, safe and accurate construction operation is realized.

Description

Technical Field

[0001] The invention relates to building construction technology, and specifically comprises a panel unit construction method for complex ceiling assembly construction, and also comprises a panel unit lifting device suitable for the construction method. Background Art

[0002] In some large public buildings, in pursuit of aesthetics, the ceiling design is generally multi-curved, and the ceiling panel is composed of narrow and long aluminum strips. For example, the ceiling of some projects presents a mountain-shaped wave shape, and the arc surface has two forms: positive arc and negative arc. The overall curved surface shape is complex, and the ceiling surface is composed of narrow and long aluminum strips. The roof steel structure grid will deviate from the design drawings due to its own weight deflection and construction errors. First, if the ceiling is cut and constructed according to the original design drawings, it is difficult to digest the errors caused by the roof steel structure; second, if the traditional construction process is used for ceiling construction, the longer and narrower ceiling aluminum strips are prone to deformation during the hoisting process and require a lot of climbing operations, which affects the construction quality, has high safety risks and a long construction period.

[0003] In view of the above construction status, multiple narrow and long panels can be installed as panel units. When the panel units are installed and lifted, the units can be lifted synchronously at multiple points. In addition, since the ceiling shapes are mostly curved, the ceiling panel units usually have a certain angle during installation. In order to adjust the angle of the ceiling panel units, the ceiling panel units also need to be lifted at a single point. This idea can avoid the problems existing in traditional construction methods, but there is currently no complete set of construction processes and corresponding construction equipment to support the realization of this idea. Summary of the invention

[0004] One object of the present invention is to provide a panel unit construction method for complex ceiling assembly construction, in which most of the assembly work is completed on the ground, and then the keel and panel unit are lifted with the help of a lifting device that can both lift synchronously and control the lifting of the lifting points individually. This method can effectively reduce the panel unit error, and can greatly reduce the investment in construction equipment and the frequency of repeated high-altitude operations, ensuring the safety of the construction process, thereby solving the problems raised by the background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a panel unit construction method for complex ceiling assembly construction, the method comprising the following steps:

[0006] Step 1. Establish a new grid structure model based on the on-site grid: According to the primary coordinate control points of the general contractor, the secondary and tertiary coordinate control points are introduced into the three-dimensional coordinates on the ground of the construction site through the total station; 3D laser scanning is used to establish a grid structure spherical node BIM model after processing the point cloud, and a new grid structure model is reconstructed based on the grid structure spherical node BIM model;

[0007] Step 2. Modification of the ceiling model: Based on the established new grid structure model, according to the corresponding relationship between the conversion layer model and the aluminum strip outer skin, the existing conversion layer model and the existing aluminum strip outer skin model are adjusted, and a new conversion layer model and a new aluminum strip outer skin model are generated;

[0008] Step 3. Aluminum strip skin unit production: select the target unit for construction, place an order according to the new aluminum strip skin model, and process on-site to obtain multiple aluminum strip skin units that match the target unit;

[0009] Step 4. The lifting device is in place: the lifting device includes a traction mechanism with multiple pull wires and multiple pulley blocks, wherein each pull wire can be lifted independently or synchronously as a whole; the pulley block is installed at a preset fixed lifting point at the ceiling target unit, the traction mechanism is set on the construction ground deviating from the ceiling target unit, and each pull wire goes around the corresponding pulley block upward and then hangs freely; the fixed lifting point is located on the grid, and the position of the fixed lifting point is determined in advance by positioning the total station;

[0010] Step 5. Assemble the main keel: Set up a frame on the site below the ceiling target unit, and assemble the main keel and the hoop parts on the frame. Ensure that the positions of each component are accurate during assembly, and set a lifting point I on the main keel, and ensure that the lifting point I is directly below the fixed lifting point;

[0011] Step 6. Hoisting the main keel: connect the tension wires to the corresponding hoisting points I on the main keel, and then adjust the elevation of each hoisting point I on the main keel by controlling each tension wire individually, and determine the curvature elevation from the point to the surface; after the elevation adjustment is completed, hoist the whole keel; after hoisting in place, fix the hoop on the grid to complete the installation of the main keel; release the connection between the tension wire and the hoisting point I;

[0012] Step 7. Positioning aluminum trough installation: Use hoisting equipment to hoist the positioning aluminum trough. After hoisting into place, use a total station to accurately position it, and then fix the positioning aluminum trough under the main keel;

[0013] Step 8. Assembling the aluminum strip skin unit: according to the inclination angles of various places of the new aluminum strip skin model, assemble and fix the corresponding aluminum strip skin units on the frame piece by piece; according to the new conversion layer model, assemble the secondary keel above the aluminum strip skin unit to obtain the conversion layer, and set the lifting point II on the secondary keel of the conversion layer, the lifting point II is located below the fixed lifting point, and the corresponding relationship between the conversion layer and the assembled aluminum strip skin unit is consistent with the corresponding relationship between the new conversion layer model and the new aluminum strip skin model; fix all the aluminum strip skin units below to the back of the conversion layer to obtain the aluminum strip skin decorative panel;

[0014] Step 9. Connect each cable to the corresponding lifting point II, and adjust the elevation of each lifting point II on the secondary keel by controlling each cable individually, and determine the curvature elevation from the point to the surface; after the elevation adjustment is completed, perform the overall lifting, that is, control the synchronous lifting of each cable; after lifting in place, fix the conversion layer on the main keel to complete the installation of the aluminum strip skin decorative panel; release the connection between the cable and the lifting point I;

[0015] Step 10. Disassemble the lifting device and the tire frame;

[0016] Step 11. Repeat steps 3-10 to construct the next ceiling target.

[0017] As a preferred solution, when proceeding to step 6 and step 9, the overall lifting is stopped according to the command; the position of each lifting point of the hoisted parts is measured using a total station to determine whether the hoisted parts meet the installation requirements. If they do not meet the requirements, the over-high lifting points are lowered by individually controlling the pull wires at the high points that exceed the installation requirements, and the lifting points with insufficient height are raised by individually controlling the pull wires at the low points that do not meet the installation requirements, until all lifting points meet the installation requirements.

[0018] Another object of the present invention is to provide a lifting device that can meet the requirements of the above-mentioned panel unit construction method. With the help of this device, the staff can centrally and conveniently control the various pull wires, thereby adjusting the position of each hanging point according to needs to ensure the smooth progress of the above-mentioned construction method.

[0019] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a panel unit lifting device, which includes a mounting frame, on which a driving motor and a reduction box installed in cooperation with the driving motor are installed; it also includes a driving shaft, which is horizontally installed on the mounting frame through a plurality of supporting shaft frames, and its coaxial line is connected to the output shaft of the reduction box and is driven by the output shaft. In addition, n driving gears are arranged on the driving shaft along the length direction, and n≥5; the lifting device also includes n twisting wire units, the twisting wire units include a clutch mechanism and a twisting wire mechanism, and the twisting wire mechanism is equipped with a driven gear, the clutch mechanism can make the driven gear driven by the driving gear, and can also make the driven gear not driven by the driving gear; it also includes n fixed pulley assemblies arranged on the grid, and the pull wire of the twisting wire mechanism bypasses the corresponding fixed pulley assemblies.

[0020] In the above technical solution, the entire lifting device has only one driving motor, which drives a driving shaft equipped with multiple active gears. In addition, multiple stranding units are provided. The stranding mechanism in the stranding unit is used to execute the retraction and release of the pulling wire, and the clutch mechanism is used to control the contact between the corresponding stranding mechanism and the active gear. Therefore, the stranding units do not interfere with each other, and the staff can arbitrarily control the working status of each stranding mechanism. Based on this, during construction, one staff member can control the entire equipment, and control the working status of each stranding unit according to the on-site command, so as to meet the construction needs such as the adjustment of the hanging point position and the overall lifting. Since all the stranding mechanisms are driven by a common driving motor, the device effectively simplifies the equipment, and the entire equipment is more compact, which is convenient for operation, transfer and installation.

[0021] As a preferred solution, the lifting device also includes a wire pulling guide frame arranged in front of the multi-station lifting mechanism, and n sets of guide wheels are arranged on the upper part of the wire pulling guide frame, and the n sets of guide wheels are respectively located in front and above the corresponding n twisting mechanisms, and the wire pulling first bypasses the corresponding guide wheel and then bypasses the corresponding fixed pulley assembly. In order to avoid the lateral traction of the panel unit by the wire pulling during lifting, the set pulley assembly should be located directly above the corresponding lifting point. Since the panel unit is large in size and the lifting points are far apart, the distance between the fixed pulley assemblies is much larger than the distance between the corresponding twisting mechanisms. The wire pulling guide frame can reasonably gather the wires, which can make the wire pulling that seriously deviates from the reasonable winding direction return to the normal winding range, thereby avoiding the phenomenon that the wire pulling slips on the twisting mechanism or is unevenly wound due to excessive tilt, and ensuring that the twisting mechanism can stably retract and release the wire.

[0022] As a preferred embodiment, the winding mechanism includes a winding drum, which is coaxially fixedly mounted on a center sleeve, and the center sleeve is coaxially movably mounted on the drive shaft, and can only rotate around the axis of the drive shaft; the center sleeve extends toward the corresponding driving gear, and a driven gear is coaxially mounted at the extended end; the clutch mechanism includes a clutch gear, a toggle mechanism for controlling the movement of the clutch gear, and a control mechanism, wherein the control mechanism can control the toggle mechanism to move forward to gear position I, at which time the clutch gear is engaged with the driving gear and the driven gear at the same time, and can also control the toggle mechanism to move backward to gear position II, at which time the clutch gear is disengaged from the driving gear and the driven gear. The wire twisting mechanism is installed on the driving shaft through a central sleeve arranged in the middle, and the wire twisting mechanism can only rotate in situ around the driving shaft but cannot move axially. By reasonably utilizing the driving shaft as the installation shaft of each wire twisting mechanism, the device does not need to independently set up an installation mechanism for the wire twisting mechanism; in addition, the wire twisting mechanism has no axial displacement on the driving shaft, that is, there is a fixed spacing between the set driven gear and the corresponding driving gear, and the set control mechanism can control the toggle mechanism to move to different gears, and then control the clutch gear to engage or disengage with the driving gear and the driven gear at the same time, thereby realizing the control of the working state of the wire twisting mechanism. This clutch mechanism has a simple structure and a stable working state.

[0023] As a preferred solution, the driving gear, driven gear and clutch gear are all bevel gears, wherein the clutch gear is located in the middle of the first two; the clutch gear is mounted on a gear shaft, which is perpendicular to the drive shaft and can move forward or backward along its own axis under the control of a toggle mechanism.

[0024] As a preferred solution, the stranding mechanism further includes a braking mechanism, which includes a positioning gear arranged on the central sleeve, and a locking mechanism arranged on the periphery of the positioning gear, and the locking mechanism can only translate forward and backward; the locking mechanism is connected to the toggle mechanism, and after the toggle mechanism moves forward until the clutch gear is meshed with the driving gear, the locking mechanism disengages from the positioning gear, and before the toggle mechanism moves backward until the clutch gear is disengaged from the driving gear, the locking mechanism locks the positioning gear. The braking mechanism is provided to limit the rotation of the central sleeve by contacting with the positioning gear on the central sleeve, thereby achieving braking of the stranding mechanism. Firstly, the wire twisting mechanism that is separated from the driving gear drive is locked by the braking mechanism to prevent the wire twisting mechanism from rotating under the reaction of the pulling wire, thereby ensuring that the height position of the corresponding hanging point remains unchanged; secondly, the braking mechanism is connected to the toggle mechanism so that the toggle mechanism synchronously controls the clutch gear and the braking mechanism to ensure that the braking mechanism has entered the braking state before the clutch gear enters the non-linked state, and the braking mechanism enters the non-braking state after the clutch gear enters the combined state; in addition, the method of synchronously controlling the clutch gear and the braking mechanism with the toggle mechanism can simplify the operation process, thereby avoiding the phenomenon of misoperation.

[0025] As a preferred solution, the clutch mechanism includes a housing, which is fixedly mounted on the mounting frame by bolts; the driving shaft passes through the housing, and the driving gear, driven gear, clutch gear, positioning gear and locking mechanism are all located inside the housing, and a limiting mechanism for limiting the locking mechanism is provided inside the housing; a sleeve portion whose axis is perpendicular to the driving shaft is provided inside the housing, and the sleeve portion for guiding the gear shaft. The driving gear, driven gear, clutch gear, positioning gear and locking mechanism are all arranged in a closed housing to ensure that these mechanisms are in a stable and suitable working environment, to ensure that each wire twisting mechanism can smoothly complete the switching between the linkage state and the disconnection state, and to ensure the stability and reliability of the braking function.

[0026] As a preferred solution of the control mechanism, the control mechanism is preferably a manually operated lever, and has a positioner for positioning the lever, wherein the lower end of the lever is hingedly installed, and the upper part is a handle for grasping; the lever can move forward around the hinge axis and drive the toggle mechanism to move to gear position I, and can also move backward and drive the toggle mechanism to move to gear position II; a positioning part that cooperates with the positioner is provided on the lever, and when the toggle mechanism reaches gear position I or gear position II, the positioner automatically cooperates with the limiting part to achieve locking of the lever. The staff controls the corresponding clutch mechanism one-to-one by holding the lever, and when the lever moves into position, the positioner automatically cooperates with the positioning part provided on the lever, thereby achieving the purpose of automatic positioning, which can effectively prevent the lever from moving without human operation, and ensure the stability of the clutch mechanism.

[0027] As another preferred solution of the control mechanism, the preferred control mechanism is an electric telescopic mechanism, which has a telescopic shaft connected to the toggle mechanism, and controls the movement of the toggle mechanism by the telescopic shaft; the lifting device also includes a remote control device or a control console, and the remote control device or the control console includes control buttons for controlling each electric telescopic mechanism. The electric telescopic mechanism is used to control the clutch mechanism, and the control buttons of each electric telescopic mechanism are centrally arranged on the remote control device or the control console, so that the staff can complete the operation of the lifting device without touching the stranding unit, and the staff does not need to move back and forth, so the use of the device is more convenient and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0029] Figure 1 A schematic diagram of the use state of the panel unit lifting device provided in the embodiment of the present invention;

[0030] Figure 2 for Figure 1 A schematic diagram of the side structure of the ground portion of the middle lifting device;

[0031] Figure 3 for Figure 1 A top view of the structure of the multi-station lifting mechanism;

[0032] Figure 4 for Figure 3 Schematic diagram of the planar structure of a single stranded wire unit;

[0033] Figure 5 for Figure 4 Schematic diagram of the planar structure of the middle stranding mechanism;

[0034] Figure 6 for Figure 4 Schematic diagram of the internal structure of the clutch mechanism;

[0035] Figure 7 for Figure 6 A schematic diagram of the structure of the locking mechanism;

[0036] Figure 8 for Figure 6 Schematic diagram of the position structure of the locking mechanism and the driving gear;

[0037] Fig. 9 for Figure 4 The structural diagram of the locator in the figure;

[0038] Fig.10 for Fig. 9 The schematic diagram of the combined structure of the positioner and the stopper is shown;

[0039] Fig.11 It is a schematic diagram of the structure when the gear lever is in gear position I;

[0040] Fig.12 This is a schematic diagram of the structure when the gear lever is in gear position II:

[0041] Fig.13 It is a schematic diagram of the structure of the unlocking mechanism inside the lever;

[0042] Fig.14 is a schematic diagram of the structure of a hoop member used to fix the fixed pulley on the grid;

[0043] Fig.15 for Fig.14 A schematic diagram of the structure of the hoop member in the open state is shown;

[0044] Fig.16 A schematic diagram of the partial structure of the electronically controlled clutch mechanism provided by the present invention.

[0045] In the figure, a multi-station lifting mechanism 1, a wire drawing guide frame 2, a wire drawing 3, a grid beam 4, a fixed pulley assembly 5, a tripod 6, a guide wheel 7, a driving motor 8, an electromagnetic brake 9, a reduction box 10, a mounting frame 11, a driving shaft 12, a four-corner stranded wire unit I13, a four-corner stranded wire unit II 14, a middle stranded wire unit I15, a four-corner stranded wire unit III 16, a four-corner stranded wire unit IV17, a clutch mechanism 18, a stranding mechanism 19, a support shaft frame 20, a baffle 21, a positioner 22, a driving gear 23, a driven gear 24, a clutch gear 25, a toggle ring 26, a positioning gear 27, a locking mechanism 28, a central sleeve 29, a baffle mounting seat 30, a limit plate 31, a middle connecting rod 32, an electric telescopic rod 33, a fixed pulley 50, an upper clamp 51, a lower clamp 52, a fixing screw 53, Movable screw 54, right connecting plate 55, left connecting plate 57, overlap interface 56, aluminum strip surface decorative panel 100, connecting rod hole 210, limiting hole 211, shaft hole 212, unlocking shaft 213, return spring 214, pressing head 215, ball lock 221, avoidance hole 222, limiting shell 223, gear shaft 251, positioning tooth head 281, guide hole 282, positioning shaft 283, extrusion head 2131, ball 2210. DETAILED DESCRIPTION

[0046] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0047] This embodiment provides a panel unit construction method for complex ceiling assembly construction, comprising the following steps:

[0048] The present invention provides the following technical solution: a panel unit construction method for complex ceiling assembly construction, the method comprising the following steps:

[0049] Step 1. Establish a new grid structure model based on the on-site grid: According to the primary coordinate control points of the general contractor, the secondary and tertiary coordinate control points are introduced into the three-dimensional coordinates on the ground of the construction site through the total station; 3D laser scanning is used to establish a grid structure spherical node BIM model after processing the point cloud, and a new grid structure model is reconstructed based on the grid structure spherical node BIM model;

[0050] Step 2. Modification of the ceiling model: Based on the established new grid structure model, according to the corresponding relationship between the conversion layer model and the aluminum strip outer skin, the existing conversion layer model and the existing aluminum strip outer skin model are adjusted, and a new conversion layer model and a new aluminum strip outer skin model are generated;

[0051] Step 3. Aluminum strip skin unit production: divide the construction area, select the target unit to be constructed, place an order based on the new aluminum strip skin model, and process on-site to obtain multiple aluminum strip skin units that match the target unit;

[0052] Step 4. The lifting device is in place: the lifting device includes a traction mechanism with multiple pull wires and multiple pulley blocks, wherein each pull wire can be lifted independently or synchronously as a whole; the pulley block is installed at a preset fixed lifting point at the ceiling target unit, the traction mechanism is set on the construction ground deviating from the ceiling target unit, and each pull wire goes around the corresponding pulley block upward and then hangs freely; the fixed lifting point is located on the grid, and the position of the fixed lifting point is determined in advance by positioning the total station;

[0053] Step 5. Assemble the main keel: Set up a frame on the site below the ceiling target, and assemble the main keel and the hoop parts on the frame. Ensure that the positions of each component are accurate during assembly, and set a lifting point I on the main keel, and ensure that the lifting point I is directly below the fixed lifting point;

[0054] Step 6. Hoisting the main keel: connect the pull wires to the corresponding hoisting points I on the main keel, and then adjust the elevation of each hoisting point I on the main keel by controlling each pull wire individually, and form a surface from points to determine the curvature elevation; after the elevation adjustment is completed, hoist the whole body; because the line speeds of the pull wires may be inconsistent during the winding process, after the main keel is about to be in place, the high-altitude installation personnel should instruct the ground operators to stop hoisting, and then use the total station to measure whether each hoisting point I of the main keel meets the installation requirements. For those that do not meet the requirements, release a pull wire separately to lower the over-high hoisting point, and lift the hoisting point I with insufficient height by winding a pull wire separately, until all hoisting points I can match the corresponding installation positions; then hoist the whole body until the main keel is finally in place, and then the staff will fix each hoop piece on the grid one by one to complete the installation of the main keel; after the installation is completed, release the connection between the pull wire and the hoisting point I;

[0055] Step 7. Install the positioning aluminum groove: Use hoisting equipment to hoist the positioning aluminum groove. After hoisting in place, use the total station to accurately locate it, and then fix the positioning aluminum groove under the main keel; the positioning aluminum groove serves as a transitional connector between the aluminum strip skin decorative panels, which can not only cover the gap, but also absorb the height difference between the edges of adjacent aluminum strip skin decorative panels;

[0056] Step 8. Assembling the aluminum strip skin unit: according to the inclination angles of various places of the new aluminum strip skin model, assemble and fix the corresponding aluminum strip skin units on the frame piece by piece; according to the new conversion layer model, assemble the secondary keel above the aluminum strip skin unit to obtain the conversion layer, and set the lifting point II on the secondary keel of the conversion layer, the lifting point II is located below the fixed lifting point, and the corresponding relationship between the conversion layer and the assembled aluminum strip skin unit is consistent with the corresponding relationship between the new conversion layer model and the new aluminum strip skin model; fix all the aluminum strip skin units below on the back of the conversion layer to obtain an aluminum strip skin decorative panel composed of a conversion layer and a plurality of aluminum strip skin units, wherein the conversion layer is used to position and shape the aluminum strip skin unit, and can absorb part of the construction error inside the decorative layer, so that the aluminum strip skin unit presents a perfect decorative effect;

[0057] Step 9. Connect each cable to the corresponding lifting point II, and adjust the elevation of each lifting point II on the secondary keel by controlling each cable individually, and determine the curvature elevation from the point to the surface; after the elevation adjustment is completed, perform the overall lifting, that is, control the synchronous lifting of each cable; like the lifting process of the main keel, when the aluminum strip skin decorative panel is about to reach the installation position, it is also necessary to stop the lifting, and then use the total station to measure the position of each lifting point II on the conversion layer to determine whether the various parts of the aluminum strip skin decorative panel meet the installation requirements. For those that do not meet the requirements, release a cable individually to lower the over-high lifting point II, and lift the insufficient lifting point II by winding a cable individually, until all lifting points II can match the corresponding installation position; then lift the entire unit until the aluminum strip skin unit is finally in place, and then the staff will fix the conversion layer on the back of the aluminum strip skin unit on the main keel to complete the installation of the aluminum strip skin unit.

[0058] Step 10, disassembling the lifting device and the tire frame;

[0059] Step 11. Repeat steps 3-10 to construct the next ceiling target until all ceiling assembly work is completed.

[0060] This construction method can first realize the overall lifting of the main keel. The main keel is first assembled on the tire frame, and then lifted and installed on the grid. In addition, multiple pieces of aluminum strip outer skin can be pre-assembled on the tire frame, and the aluminum strip outer skin is fixed through the conversion layer on the back. The conversion layer has a certain reinforcement and shaping effect on the aluminum strip outer skin. The two together form a decorative aluminum strip skin unit. The lifting device used can adjust each lifting point to keep the aluminum strip skin unit in its original shape, and then lift it as a whole. Therefore, this method allows most of the work to be completed on the ground, greatly reducing the frequency of vertical transportation operations, while also reducing the workload of high-altitude operations, and the entire process is safer. Due to the use of overall lifting, workers can more accurately complete the assembly of the main keel and the aluminum strip outer skin on the ground, and can accurately lift it to the installation position, so this construction method can effectively improve the accuracy of construction.

[0061] In view of the above construction method, this embodiment also provides a panel unit lifting device that can complete operations such as panel unit lifting and adjustment according to the above method, such as Figure 1 As shown, the panel unit lifting device includes a ground part and an aerial part, wherein the ground part includes a mounting frame 1 arranged close to the ground, and the aerial part includes a plurality of fixed pulley assemblies 5 installed on the grid beam, and a plurality of pull wires of the ground part respectively pass upward around the corresponding fixed pulley assemblies 5, and then are hoisted to the hoisting point on the back of the aluminum strip skin decorative panel 100 through the hooks at the end.

[0062] Regarding the ground portion of the above-mentioned panel unit lifting device, as Figure 2 As shown, it includes a drive motor 8 fixedly mounted on a mounting frame 11, and a reduction box 10 mounted in cooperation with the drive motor 8, and an electromagnetic brake 9 is also arranged on the mounting frame 11 to brake the drive motor 8. When the drive motor 8 loses power, the electromagnetic brake 9 starts to hold the brake disc on the rotating shaft of the drive motor 8 tightly, and when the drive motor 8 is powered on, the electromagnetic brake 9 releases the brake. Figure 3 It can be seen that the ground part also includes a drive shaft 12, which is directly connected to the output shaft of the reduction gearbox 10. Five stranded wire units are coaxially installed on the drive shaft 12, which are marked as four-corner stranded wire unit I13, four-corner stranded wire unit II 14, middle stranded wire unit I15, four-corner stranded wire unit III 16, and four-corner stranded wire unit IV17 from left to right, among which the four-corner stranded wire unit I13, four-corner stranded wire unit II 14, four-corner stranded wire unit III 16 and four-corner stranded wire unit IV17 are used for the four hanging points on the four sides of the control panel unit, and the middle stranded wire unit I15 is used for the hanging point in the middle of the control panel unit. In order to avoid lateral traction on the panel unit during the lifting process, the wire pulling process is as follows: Figure 1As shown, the fixed pulley assembly 5 used is also arranged directly above the corresponding hanging point. For the convenience of operation, the pulling wire of the middle stranding unit I15 is passed around the middle fixed pulley assembly 5, the pulling wires of the two stranding units on the left are passed around the two fixed pulley assemblies 5 on the left, and the pulling wires of the two stranding units on the right are passed around the two fixed pulley assemblies 5 on the left.

[0063] In addition, combined Figure 1 and Figure 2 It can be seen that a wire guide frame 2 is arranged in front of the drive shaft 12. The top of the wire guide frame 2 is a cross bar parallel to the drive shaft 12. The cross bar is located near each wire and five sets of guide wheels 7 are arranged on the cross bar. Figure 1 It can be seen that the direction of the wire pulling unit I15 in the middle does not change significantly after passing through the middle guide wheel 7, while the directions of the four wire pulling units on both sides change significantly after passing through the corresponding guide wheels 7. This is mainly because in order to achieve a better lifting effect, the distance between the fixed pulley assemblies matches the distance between the hanging points and is therefore much larger than the distance between the corresponding wire pulling units. This will cause the wire pulling units at the four corners to seriously deviate from a reasonable winding direction. The set wire pulling guide frame 2 can reasonably gather the wires, which can return the wire pulling wires that have seriously deviated from a reasonable winding direction to a normal winding range, thereby avoiding the phenomenon that the wire pulling wire slips or is unevenly wound on the wire pulling mechanism 19 due to excessive inclination, thereby ensuring that the wire pulling mechanism 19 can stably retract and release the wire.

[0064] In this embodiment, five stranding mechanisms are installed on the same drive shaft 12 and driven by a drive motor 8. In order to meet the construction requirements of adjusting the height of each suspension point individually, the stranding unit used in this embodiment should have a clutch function so that it can rotate with the drive shaft 12 and remain stationary. In addition, in order to ensure that the drive shaft 12 does not deform, two support shaft frames 20 supporting the drive shaft 12 are arranged on both sides of each stranding unit, and the support shaft frames 20 are installed on the mounting frame 11. Specifically, as Figure 4 As shown, the stranding unit includes a clutch mechanism 18 on the left and a stranding mechanism 19 on the right, wherein the clutch mechanism 18 has a housing and is fixedly mounted on the mounting frame 11 through the housing, and an upwardly extending blocking rod 21 is provided on the front of the housing, and a positioner 22 for positioning the blocking rod 21 is also provided on the front of the housing; Figure 5 The wire twisting mechanism 19 includes a wire twisting drum for winding the pulling wire 3, and also includes a center sleeve 29 coaxially fixedly installed. The center sleeve 29 is coaxially movably installed on the driving shaft 12. The right end of the center sleeve 29 touches the adjacent supporting shaft frame 20 on the right side, and the left side extends into the clutch mechanism 18. Under the restriction of the supporting shaft frame 20 and the clutch mechanism 18, the wire twisting mechanism 19 can only rotate in place without axial movement.

[0065] from Figure 5It can be seen that the left end of the central sleeve 29 is coaxially mounted with the driven gear 24, and a spur gear is mounted on the right side of the driven gear 24 as a positioning gear 27. Figure 6 It can be seen that the driving shaft 12 passes through the housing of the clutch mechanism 18, and the driven gear 24 and the positioning gear 27 are located in the housing. In addition, there are also driving gears 23 and clutch gears 25 in the housing. The driven gears 24, 23 and clutch gears 25 are bevel gears of the same model, and the driving gear 23 is fixedly mounted on the driving shaft 12, and is adjacent to and separately arranged with the tooth surface of the driven gear 24; the clutch gear 25 is fixedly mounted on the gear shaft 251, the axis of the gear shaft 251 is perpendicular to the driving shaft 12, and the rear part is movably mounted in the shaft seat in the housing, so that the gear shaft 251 can move forward and backward under the constraint of the shaft seat; a toggle mechanism is also arranged inside the housing, and the toggle mechanism has a toggle ring 26 movably mounted on the gear shaft 251, and the toggle ring 26 can push the gear shaft 251 to move forward and backward, and the aforementioned stop rod 21 is used to control the toggle mechanism. As for the aforementioned positioning gear 27, it is one of the braking components of the wire twisting mechanism 19, and realizes braking of the wire twisting mechanism 19 by cooperating with the locking mechanism 28 disposed in the housing 1. Figure 6 and Figure 7 The rear end of the locking mechanism 28 and the clutch gear 25 are located on the same side of the drive shaft 12, while the front end thereof passes through the bottom of the drive shaft 12 and extends to the other side of the drive shaft 12, and a positioning tooth head 281 facing the middle of the positioning gear 27 is arranged at the front end, and the positioning tooth head 281 can be inserted into the tooth gap of the positioning gear 27 by translating the locking mechanism 28 forward. In order to ensure that the locking mechanism 28 will not deviate and improve its strength, waist-shaped guide holes 282 are respectively opened in the horizontal direction at the front and rear of the locking mechanism 28, and correspondingly, a positioning shaft 283 matching the guide hole 282 is arranged on the housing.

[0066] In this embodiment, the middle part of the toggle mechanism used is a horizontally arranged middle connecting rod 32, the left end of which is the aforementioned toggle ring 26, and the right end is connected to the front end of the locking mechanism 28. Therefore, when the toggle mechanism is controlled to move forward to the gear position I by the shift lever 21, in addition to the clutch gear 25 simultaneously engaging the driving gear 23 and the driven gear 24, the locking mechanism 28 will also simultaneously translate forward and cause the positioning tooth head 281 to disengage from the positioning gear 27. When the toggle mechanism is controlled to move backward to the gear position II by the shift lever 21, the clutch gear 25 simultaneously disengages from the driving gear 23 and the driven gear 24, and the locking mechanism 28 simultaneously translates forward and causes the positioning tooth head 281 to insert into the tooth gap of the positioning gear 27. That is, in this embodiment, the locking mechanism 28 is connected to the toggle mechanism, so that the toggle mechanism synchronously controls the clutch gear 25 and the braking mechanism, ensuring that the braking mechanism has entered the braking state before the clutch gear 25 enters the non-linked state, and the braking mechanism enters the non-braking state after the clutch gear 25 enters the linked state. This control method can simplify the operation process, thereby avoiding the phenomenon of misoperation.

[0067] It should be noted that, in the case where the working state of a certain strand changing mechanism needs to be switched, the drive motor 8 needs to be controlled to stop working first, and the electromagnetic brake 9 needs to be ensured to be in a braking state. After the strand changing mechanism state is switched, the drive motor 8 is started again.

[0068] Regarding the baffle bar 21 used in this embodiment, Figure 7 and Figure 8 The lower end of the blocking rod 21 is hingedly mounted on the bottom of the shell through the blocking rod mounting seat 30, and passes upward through the avoidance hole set on the top of the shell. The aforementioned middle connecting rod 32 passes horizontally through the connecting rod hole 210 set on the blocking rod 21 (the connecting rod hole 210 is located above the mounting seat 30). Under the constraint of the mounting seat 30 and the limitation of the operating hole opened on the top of the shell, when the blocking rod 21 moves forward to the front, the toggle mechanism reaches the gear position I, that is, the blocking rod 21 is in the gear position I state at this time. When the blocking rod 21 moves backward to the rearmost, the toggle mechanism reaches the gear position II, that is, the blocking rod 21 is in the gear position II state at this time.

[0069] from Figure 4 As can be seen from the figure, a positioner 22 is provided at the top of the housing to prevent the gear lever 21 from automatically shifting. Fig. 9 As shown, the main body of the positioner 22 includes a limiting shell 223, the middle of the limiting shell 223 is a rectangular blocking rod hole facing the operating hole, and two sets of ball locks 221 are respectively arranged on both sides of the limiting shell 223, one in front and one in the back, and the balls 2210 of the ball locks 221 are both extended into the blocking rod hole; Figure 8It can be seen that the limiting holes 211 are arranged on the two sides of the blocking rod 21. Based on the working principle of the ball lock 221, when the blocking rod 21 is in the gear position I state or the gear position II state, the corresponding ball 2210 of the ball lock 221 automatically fits into the limiting hole 211, thereby achieving the purpose of automatic positioning of the blocking rod 21. Figure 7 and Figure 8 It can also be seen that an arc-shaped limit plate 31 is provided in the middle of the barrier rod 21, the arc center of the limit plate 31 is located on the hinge axis of the barrier rod mounting seat 30, and the arc-shaped limit plate 31 extends to the front and rear of the barrier rod 21 respectively, and a locking mark is provided on the front of the arc-shaped limit plate 31. The locking mark used in this embodiment is a "lock" icon, and of course, text, letters or color marks can also be used. Fig. 9 and Fig.10 It can be seen that the front side and the rear side of the limiting shell 223 are respectively provided with avoidance holes 222. Fig.10 It can be seen that the width of the arc-shaped limiting plate 31 is equal to or slightly smaller than the width of the blocking rod hole. Fig.11 As shown, when the baffle rod 21 is in the gear position I, the front part of the arc limit plate 31 extends out from the front avoidance hole 222, and the rear part of the arc limit plate 31 retracts into the baffle rod hole. When the baffle rod 21 is in the gear position II, the rear part of the arc limit plate 31 extends out from the rear avoidance hole 222, and at this time the staff can clearly see the restricted locking mark on the arc limit plate 31, which can prevent the staff from misjudging the state of the clutch mechanism 18.

[0070] In addition, in order to further prevent misoperation of the gear lever 21, the upper portion of the gear lever 21 is provided with an open top shaft hole 212, and the aforementioned limit hole 211 is connected to the shaft hole 212, that is, the bumper 2210 will enter the shaft hole 212, so when shifting, the unlocking mechanism needs to be used to push the bumper 2210 in the opposite direction. Fig.13 As shown, the unlocking mechanism used in this embodiment is mainly an unlocking shaft 213 movably installed in the shaft hole 212, the lower end of the unlocking shaft 213 is a conical or wedge-shaped extrusion head 2131 that contacts the beads 2210 on both sides, the upper end of the unlocking shaft 213 extends out of the shaft hole 212 and is provided with a pressing head 215, and a return spring 214 is installed between the pressing head 215 and the gear lever 21. Therefore, when holding the gear lever 21, it is necessary to press down the pressing head 215 at the same time to complete the gear shift.

[0071] The structure and working principle of the ground part of the panel unit lifting device are described above. Regarding the fixed pulley assembly 5 installed on the grid beam 4, this embodiment adopts a quick-release structure, such as Fig.14 and 15As shown, the fixed pulley assembly 5 includes a fixed pulley 50 and a hoop, wherein the hoop includes an upper hoop 51 and a lower hoop 52, both of which surround the grid beam 4, and the fixed pulley 50 is movably installed below the lower hoop 52 in a manner that can rotate in situ, so that the fixed pulley assembly 5 can follow the direction of the pull line. Fig.14 It can be seen that the lower clamp 52 is arc-shaped as a whole, and a horizontal left connecting plate 57 and a right connecting plate 55 are respectively provided on the left and right end edges, wherein two longitudinally penetrating mounting holes are provided on the left connecting plate 57, and two open n-shaped docking ports 56 are provided on the right connecting plate 55; the upper clamp 51 itself adopts a variable steel belt, and two fixed screws 53 are fixedly provided on the left end thereof, and are installed on the left connecting plate 57 through the fixed screws 53, and two movable screws 54 are fixedly provided on the right end, and the movable screws 54 can be clamped in the corresponding docking ports 56. When installing the fixed pulley assembly 5, first take out the movable screw 54 from the overlap interface 56, then fit the lower clamp 52 to the lower part of the grid beam 4, then bend the upper clamp 51 downward to the movable screw 54 to clamp the overlap interface 56, and finally tighten the nut on the movable screw 54 to press the back of the right connecting plate 55. At this time, the fixed installation of the fixed pulley assembly 5 is completed. When disassembling, it is only necessary to loosen the nut on the movable screw 54 appropriately. When the nut can pass over the right connecting plate 55 to the right, the entire pulley assembly 5 can be removed. The fixed pulley assembly 5 using this clamp structure is not only easy to disassemble and assemble, but also can be applied to grid beams 4 of various specifications.

[0072] From the above description, it can be seen that this embodiment provides a panel unit lifting device that is easy for workers to operate and can independently adjust the height of each hanging point. The entire device is driven by a drive motor 8, and the structure is reasonable and compact. One worker can operate the entire process, and the operation process is simple and safe. Regarding the method of using a manual lever 21 to control each clutch mechanism 18, other designs can be made, such as using an electric control method, which will enable the control of the lifting device to further meet the construction needs of remote control, remote control, etc. Fig.16 As shown, this embodiment provides a second clutch mechanism 18, which is different from the aforementioned manually operated clutch mechanism 18 in that an electric telescopic rod 33 (which may also be an electromagnet mechanism) is used to replace the stop bar 21, that is, the clutch mechanism 18 is controlled to switch gears by automatic control. Based on this, the lifting device is also equipped with a remote controller, and the remote controller controls the drive motor 8, the electromagnetic brake 9, and each clutch mechanism 18, so that the staff can complete the operation of the lifting device without touching the ground, and the staff does not need to move back and forth, so the use of the device is more convenient and safe.

[0073] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0074] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0075] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A panel unit construction method for complex ceiling assembly construction, characterized in that: The following steps are involved: Step 1. Establish a new grid structure model based on the on-site grid: According to the primary coordinate control points of the general contractor, the secondary and tertiary coordinate control points are introduced into the three-dimensional coordinates on the ground of the construction site through the total station; 3D laser scanning is used to establish a grid structure spherical node BIM model after processing the point cloud, and a new grid structure model is reconstructed based on the grid structure spherical node BIM model; Step 2. Modification of the ceiling model: Based on the established new grid structure model, according to the corresponding relationship between the conversion layer model and the aluminum strip outer skin, the existing conversion layer model and the existing aluminum strip outer skin model are adjusted, and a new conversion layer model and a new aluminum strip outer skin model are generated; Step 3. Aluminum strip skin unit production: select the target unit to be constructed, place an order based on the new aluminum strip skin model at the target unit, and process on-site to obtain multiple aluminum strip skin units that match the target unit; Step 4. The lifting device is in place: the lifting device includes a traction mechanism with multiple pull wires and multiple pulley blocks, wherein each pull wire can be lifted independently or synchronously as a whole; the pulley block is installed at a preset fixed lifting point at the ceiling target unit, the traction mechanism is set on the construction ground deviating from the ceiling target unit, and each pull wire goes around the corresponding pulley block upward and then hangs freely; the fixed lifting point is located on the grid, and the position of the fixed lifting point is determined in advance by positioning the total station; Step 5. Assemble the main keel: Set up a frame on the site below the ceiling target unit, and assemble the main keel and the hoop parts on the frame. Ensure that the positions of each component are accurate during assembly, and set a lifting point I on the main keel, and ensure that the lifting point I is directly below the fixed lifting point; Step 6. Hoisting the main keel: connect the tension wires to the corresponding hoisting points I on the main keel, and then adjust the elevation of each hoisting point I on the main keel by controlling each tension wire individually, and determine the curvature elevation from the point to the surface; after the elevation adjustment is completed, hoist the whole keel; after hoisting in place, fix the hoop on the grid to complete the installation of the main keel; release the connection between the tension wire and the hoisting point I; Step 7. Positioning aluminum trough installation: Use hoisting equipment to hoist the positioning aluminum trough. After hoisting into place, use a total station to accurately position it, and then fix the positioning aluminum trough under the main keel; Step 8. Assembling the aluminum strip skin unit: according to the inclination angles of various places of the new aluminum strip skin model, assemble and fix the aluminum strip skin units corresponding to various places on the tire frame piece by piece; according to the new conversion layer model, assemble the secondary keel above the aluminum strip skin unit to obtain the conversion layer, and set the lifting point II on the secondary keel of the conversion layer, and the lifting point II is located below the fixed lifting point, and the corresponding relationship between the conversion layer and the assembled aluminum strip skin unit is consistent with the corresponding relationship between the new conversion layer model and the new aluminum strip skin model; Fixing all the aluminum strip skin units below to the back of the conversion layer to obtain an aluminum strip skin decorative panel; Step 9. Connect each cable to the corresponding lifting point II, and adjust the elevation of each lifting point II on the secondary keel by controlling each cable individually, and determine the curvature elevation from the point to the surface; after the elevation adjustment is completed, perform the overall lifting, that is, control each cable to lift synchronously; after lifting in place, fix the conversion layer on the main keel to complete the installation of the aluminum strip skin decorative panel; release the connection between the cable and the lifting point II; Step 10. Disassemble the lifting device and the tire frame; Step 11. Repeat steps 3-10 to construct the next ceiling target.

2. The panel unit construction method according to claim 1, characterized in that: In step 6 and step 9, after the main keel or aluminum strip skin decorative panel is lifted into place, stop the overall lifting; use a total station to measure the position of each lifting point, and judge whether the installation requirements are met by the position of the lifting point. If it does not meet the requirements, lower the over-high lifting points by controlling the pull wires at the high points separately, and raise the lifting points with insufficient height by controlling the pull wires at the low points separately, until all lifting points meet the installation requirements.

3. The panel unit lifting device used in the panel unit construction method according to claim 1, characterized in that: It includes a mounting frame, on which a driving motor and a reduction box installed in cooperation with the driving motor are mounted; It also includes a horizontally arranged driving shaft, which is coaxially connected to the output shaft of the reduction box, and n driving gears are arranged on the driving shaft along the length direction, and n≥5; the lifting device also includes n twisting wire units, the twisting wire units include a clutch mechanism and a twisting wire mechanism, and the twisting wire mechanism is equipped with a driven gear, the clutch mechanism can make the driven gear driven by the driving gear, and can also make the driven gear not driven by the driving gear; it also includes n fixed pulley assemblies arranged on the grid, and the pulling wire of the twisting wire mechanism passes around the corresponding fixed pulley assemblies.

4. The lifting device according to claim 3, characterized in that: The lifting device also includes a wire pulling guide frame arranged in front of the multi-station lifting mechanism, and n groups of guide wheels are arranged on the upper part of the wire pulling guide frame. The n groups of guide wheels are respectively located in front of and above the corresponding n twisting mechanisms, and the wire pulling first passes around the corresponding guide wheel and then passes around the corresponding fixed pulley assembly.

5. The lifting device according to claim 3, characterized in that: The winding mechanism includes a winding drum, which is coaxially fixedly installed on a central sleeve, and the central sleeve is coaxially movably installed on a driving shaft, and can only rotate around the axis of the driving shaft; the central sleeve extends toward the corresponding driving gear, and a driven gear is coaxially installed at the extended end; the clutch mechanism includes a clutch gear, a toggle mechanism for controlling the movement of the clutch gear, and also includes a control mechanism, wherein the control mechanism can control the toggle mechanism to move forward to gear position I, at which time the clutch gear is engaged with the driving gear and the driven gear at the same time, and can also control the toggle mechanism to move backward to gear position II, at which time the clutch gear is disengaged from the driving gear and the driven gear.

6. The lifting device according to claim 5, characterized in that: The driving gear, driven gear and clutch gear are all bevel gears, wherein the clutch gear is located in the middle of the first two; the clutch gear is mounted on a gear shaft, which is perpendicular to the driving shaft and can move forward or backward along its own axis under the control of a toggle mechanism.

7. The lifting device according to claim 6, characterized in that: The wire twisting mechanism also includes a braking mechanism, which includes a positioning gear arranged on the central sleeve and a locking mechanism arranged on the periphery of the positioning gear, and the locking mechanism can only be translated forward and backward; the locking mechanism is connected to the toggle mechanism, and after the toggle mechanism moves forward until the clutch gear is engaged with the driving gear, the locking mechanism disengages from the positioning gear, and before the toggle mechanism moves backward until the clutch gear is disengaged from the driving gear, the locking mechanism locks the positioning gear.

8. The lifting device according to claim 7, characterized in that: The clutch mechanism includes a shell, which is fixedly mounted on the mounting frame by bolts; the drive shaft passes through the shell, and the driving gear, driven gear, clutch gear, positioning gear and locking mechanism are all located inside the shell, and a limiting mechanism for limiting the locking mechanism is arranged inside the shell; a shaft sleeve portion whose axis is perpendicular to the drive shaft is arranged inside the shell, and the shaft sleeve portion for guiding the gear shaft.

9. The lifting device according to any one of claims 5 to 8, characterized in that: The control mechanism is a manually operated gear lever and has a locator for positioning the gear lever, wherein the lower end of the gear lever is hingedly installed and the upper part is a handle for grasping; the gear lever can move forward around the hinge axis and push the toggle mechanism to gear position I, and can also move backward and push the toggle mechanism to gear position II; a positioning part that cooperates with the locator is provided on the gear lever, and when the toggle mechanism reaches gear position I or gear position II, the locator automatically cooperates with the limit part to achieve locking of the gear lever.

10. The lifting device according to any one of claims 5 to 8, characterized in that: The control mechanism is an electric telescopic mechanism, and the telescopic shaft of the electric telescopic mechanism is connected to the toggle mechanism; the lifting device also includes a remote control device, and the remote control includes control buttons for controlling each electric telescopic mechanism.

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