Multi-point supporting rotating body driving device and mounting method

Abstract

The invention discloses a multi-point supporting swivel driving device and an installation and construction method. The installation and construction method comprises the steps that S1, a center spherical hinge is installed at the bottom of an upper bearing platform; s2, the rack is hoisted into a lower bearing platform; s3, the rack falls to a preset range; s4, the roller trolley is moved to the position over the sliding way; s5, dismounting the trolley guide rail and the traction trolley; s6, the roller trolley is finely adjusted in place; s7, trolley frame guide rails are laid on the lower bearing platform; s8, the first set of traction trolleys and supporting blocks are dismantled; s9, dismounting the second group of traction trolleys and supporting blocks; s10, repeating the steps S8-S9 until all the traction trolleys and the supporting blocks are dismantled; s11, the guide rail and the supporting block at the rack are dismantled; s12, dismantling the traction trolley; s13, a guide wheel on the inner ring of the rack is installed; and S14, repeating the steps S5-S13 until the installation of all the rest driving equipment devices is completed. The problems that a temporary support between an upper bearing platform and a lower bearing platform needs to be dismantled during installation of the swivel driving device, and attitude stability control before bridge swivel is difficult are solved.

Description

Technical Field

[0001] The present invention relates to the field of installation of multi-point support rotating driving devices. More specifically, the present invention relates to a multi-point support rotating driving device and an installation method thereof. Background Art

[0002] For large-span and high-rise structures, the structural stress is sensitive to wind loads, and the rotating body is too heavy. Due to the high structural center of gravity, when the structure deflects at a small angle due to an unbalanced moment, the center of gravity of the rotating body structure will produce a large offset, and then a large additional unbalanced moment will be generated. Using the conventional single spherical hinge rotating technology, it is difficult to ensure the stability during the rotating stage. By adopting a multi-point support rotating system, the overall stability of the rotating system can be improved, the automation and intelligent level of the rotating construction can be enhanced, and the rotating construction can be made safer and more controllable. Each set of driving devices is composed of a carriage frame, a reducer frame, a motor reducer, gears, and a roller trolley, etc., mainly providing the power for rotation. The motor drives the gear to rotate relative to the rack, and then drives the beam body to rotate. The rotating driving device is arranged between the lower bearing platform and the upper rotating disk (upper rotating table), the clearance between the structures is small, the rotating driving device has many components and a large weight, and there is no condition for installation with the cooperation of large-scale lifting equipment, so the installation difficulty is large and the accuracy requirement is high. During the installation of the rotating driving device, the temporary support between the upper and lower bearing platforms needs to be removed, the installation period of the driving device is long, and it is difficult to control the attitude stability of the bridge before rotation. Summary of the Invention

[0003] In order to achieve these and other advantages according to the present invention, on the one hand, a technical solution of the present application provides a multi-point support rotating driving device, including: A plurality of groups of driving device assemblies, which are evenly distributed on an annular slideway on the lower bearing platform, and the driving device assemblies include a carriage frame, a reducer frame, a reducer, a driving gear, a driven gear, and a roller trolley assembly; The roller trolley assembly rolls on the slideway, the carriage frame is arranged on the roller trolley assembly and the two are connected, a loading structure is arranged on the carriage frame, and the loading structure is connected to the bottom of the upper bearing platform through surface sticking of an upper embedded plate; The reducer frame is installed inside the frame of the carriage frame, the reducer is installed on the reducer frame, the output shaft of the reducer is connected to the driving gear, the driving gear and the driven gear mesh with each other and are both arranged on the reducer frame; the driven gear meshes with a ring-shaped rack for transmission, and the ring-shaped rack is fixed to the outside of the circumferential lower bearing platform.

[0004] Preferably, the roller trolley assembly includes a roller trolley, a limit frame, and a rubber pad, and the roller trolley is arranged at the bottom of the limit frame through the rubber pad.

[0005] On the other hand, a technical solution of the present application provides an installation method based on any of the above-mentioned multi-point support swivel drive devices, comprising the following steps: Step 1: Install the center ball joint at the bottom of the upper platform and the lower bracket at the top of the lower platform, hang the annular rack section by section onto the lower platform in the foundation pit, and pull it to the preset range; Step 2: Lay a trolley guide rail on the lower platform for horizontal transportation of the roller trolley. The trolley guide rail passes over the rack. A traction trolley is installed on the trolley guide rail. The roller trolley is moved to the top of the slideway by dragging the traction trolley. The roller trolley is gradually placed on the slideway, and the roller trolley is temporarily welded and locked to the slideway. A support block and a jack are set on the traction trolley. Step 3: Drag the traction trolley to move the front of the trolley frame to above the rack. At this time, remove the first set of traction trolleys and support blocks in the front, continue to drag the trolley frame inward to just above the rack, remove the second set of traction trolleys and support blocks, and add the second set of traction trolleys to the upper guide rail of the rack; Step 4: Repeat step 3 until all traction trolleys and support blocks are removed; Step 5: Continue to drag the trolley frame to the top of the limit frame, and remove the guide rail and support block at the rack; Continue to drag the trolley frame into place, control the meshing of the driven gear and the rack, remove the traction trolley with the help of the jack, and remove the hand chain hoist at the same time, and the trolley frame is in place; Step 6: Repeat steps 2 to 5 until all remaining drive devices are installed.

[0006] Preferably, step one comprises: S1. Install a central ball joint at the bottom of the upper support, and install a lower bracket at the top of the lower support. The central ball joint can be rotatably arranged on the lower bracket; S2, hoisting the annular rack section by section onto the lower pedestal in the foundation pit until the rack moves to the vicinity of the rack foundation of the lower pedestal, with the teeth of the rack facing outwards, the rack foundation located inside the rack, and anchoring and fixing the rack foundation and the rack to stabilize the rack; S3. Use the pre-buried installation hanging points at the bottom of the upper platform to hang the hand chain hoist, which is connected to the rack. The rack can be dragged, lifted, and turned over by adjusting the hand chain hoist to place the rack within the preset range.

[0007] Preferably, step 2 includes: S4. Mark the outline of the position to be installed of each roller trolley assembly, lay the trolley guide rail for horizontal transportation of the roller trolley on the lower platform, the trolley guide rail passes over the rack, the bottom of the trolley guide rail is supported by a pad, a traction trolley is installed on the trolley guide rail, the roller trolley is hoisted onto the traction trolley, and the traction trolley is dragged by the hand chain hoist installed at the center ball joint to move the roller trolley to the top of the slideway; S5. Install several jacks vertically between the roller trolley and the slideway, and pressurize the jacks until the roller trolley is lifted to the bottom and separated from the traction trolley. Then remove the trolley guide rail and the traction trolley, and unload all the jacks one by one and remove them step by step until the roller trolley is placed on the slideway. Remove the jacks and put the roller trolley in place. S6. Use a total station to measure and control the radial deviation of the roller trolley, then use a manual jack to fine-tune it into place, and temporarily weld and lock the roller trolley and the slideway; S7. Lay a trolley frame guide rail on the lower support platform for horizontal transportation of the trolley frame, arrange a number of traction trolleys on the trolley frame guide rail, set support blocks and jacks on the traction trolleys, and hoist the trolley frame onto the traction trolleys.

[0008] Preferably, step three includes: S8. Use the hand chain hoist installed at the center ball joint to drag the traction trolley to move the front of the trolley frame to above the rack. At this time, remove the first set of traction trolleys and support blocks located in the front; S9. Continue to drag the trolley frame inward until it is directly above the rack, remove the second set of traction trolleys and support blocks, and add the second set of traction trolleys to the upper guide rail of the rack.

[0009] Preferably, the step five comprises: S11. Continue to drag the trolley frame to the top of the limit frame, and remove the guide rail and support block at the rack; S12, continue to drag the trolley frame into place, control the meshing of the driven gear and the rack, remove the traction trolley with the help of the jack, and remove the hand chain hoist at the same time, and the trolley frame is in place; S13. Put the small bracket at the lower part of the reducer frame in place, install the guide wheel of the inner ring of the rack on the small bracket, and ensure that the rack is tangent to the pitch circle of the driven gear during the positioning of the trolley frame; Preferably, a steel rod is used as a roller and is placed under the rack. As the reducer drives the rack to move, the steel rod is continuously switched to the front of the rack.

[0010] Preferably, S3 further includes the following steps: using a total station, a steel tape measure, and a level to measure the distance between the rack and the rack base, using the inner circle marking points and the outer circle marking points of the rack base as rack positioning control points, adjusting the radial and height positions of the rack by means of a hand jack, fine-tuning bolts, and pads, and pouring concrete after re-measurement.

[0011] The present invention has at least the following beneficial effects: The present invention solves the problems that each component of the slewing drive device, especially the roller car, the carriage frame, and the speed reducer frame (including the speed reducer), is heavy, and it is difficult to install without the cooperation of large-scale lifting equipment, and the installation difficulty is great.

[0012] The present invention solves the problems that it is impossible to find out the actual center of the rotating ball hinge after the construction of the upper structure of the slewing bridge, and the installation of the rack has high precision requirements for the ovality, concentricity, etc. during assembly.

[0013] The present invention solves the problems that the temporary support between the upper and lower bearing platforms needs to be removed during the installation of the slewing drive device, the installation period of the drive device is long, and it is difficult to control the attitude stability of the bridge before slewing.

[0014] Other advantages, objectives, and features of the present invention will be partially reflected by the following description, and partially will be understood by those skilled in the art through the research and practice of the present invention. Description of the Drawings

[0015] Figure 1 It is a top view of the overall construction effect of the multi-point support slewing drive device of the present invention; Figure 2 It is a cross-sectional view of the overall construction effect of the multi-point support slewing drive device of the present invention; Figure 3 It is a construction schematic diagram of S4 in the installation construction method of the multi-point support slewing drive device of the present invention; Figure 4 It is a construction schematic diagram of S5 in the installation construction method of the multi-point support slewing drive device of the present invention; Figure 5 It is a construction schematic diagram of S6 in the installation construction method of the multi-point support slewing drive device of the present invention; Figure 6 It is a construction schematic diagram of S7 in the installation construction method of the multi-point support slewing drive device of the present invention; Figure 7 It is a construction schematic diagram of S8 in the installation construction method of the multi-point support slewing drive device of the present invention; Figure 8 It is a construction schematic diagram of S9 in the installation construction method of the multi-point support slewing drive device of the present invention; Figure 9 and 10 It is a construction schematic diagram of S11 in the installation construction method of the multi-point support slewing drive device of the present invention; Figure 11 and 12 It is a construction schematic diagram of S12 in the installation construction method of the multi-point support slewing drive device of the present invention. Detailed Embodiments

[0016] The present invention will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement it according to the text of the specification.

[0017] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description of the present invention can be applied to other implementation schemes, variation schemes, improvement schemes, equivalent schemes, and other technical schemes that do not depart from the spirit and scope of the present invention.

[0018] Those skilled in the art should understand that in the disclosure of the present invention, the orientation or positional relationship indicated by terms such as "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on the present invention.

[0019] It can be understood that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0020] As Figure 1-12 shown, a preferred embodiment of the present invention provides a multi-point support slewing drive device, including: Several groups of drive device assemblies 1P, which are evenly distributed on the annular slideway 2 on the lower bearing platform 1. The drive device assembly includes a bogie frame 3, a speed reduction machine frame, a limit frame, a speed reducer 6, a driving gear 7, a driven gear 8, and a roller car assembly 9; The roller car assembly 9 rolls on the slideway 2. The bogie frame 3 is arranged on the roller car assembly 9 and the two are connected. A loading structure 21 is arranged on the bogie frame 3, and the loading structure 21 is connected to the bottom of the upper bearing platform 10 by surface bonding through an upper embedded plate 20. This connection method can ensure the close combination of the device and the bridge structure and enhance the overall stability.

[0021] The speed reduction machine frame is installed inside the frame of the bogie frame 3. The speed reducer 6 is installed on the speed reduction machine frame. The output shaft of the speed reducer 6 is connected to the driving gear 7. The driving gear 7 and the driven gear 8 mesh with each other and are both arranged on the speed reduction machine frame. The driven gear 8 meshes and drives with the annular rack 13, and the annular rack 13 is fixed to the outside of the circumferential lower bearing platform 1.

[0022] In the above technical solution, the speed reducer 6 serves as the power source, and its output shaft drives the driving gear 7 to rotate. The driving gear 7 meshes with the driven gear 8 to transmit the power to the driven gear 8. The driven gear 8 meshes with the annular rack 13 to convert the rotational motion into the circumferential motion of the rack 13. The bogie frame 3, the speed reducer frame, and the loading mechanism 21 are fixedly connected as a whole. The upper pre-embedded plate 20 is adhesively connected to the upper bearing platform 10 by surface attachment. The rack is annular and is fixed around the outer circumference of the lower bearing platform. With the power transmission of the speed reducer, the upper bearing platform 10 is driven to rotate around the central spherical hinge 11, realizing the swiveling function of the bridge. The roller car assembly 9 rolls on the slideway 2 to support the weight of the entire device; the guide wheel 19 rolls inside the rack 13 to ensure the accuracy and stability of the gear transmission.

[0023] In another technical solution, the roller car assembly 9 includes a roller car and a rubber pad. The roller car is arranged at the bottom of the limit frame through the rubber pad. The setting of the rubber pad can effectively buffer vibration, reduce noise and wear during operation, and extend the service life of the device.

[0024] In another technical solution, an installation method of the multi-point support swiveling drive device is provided, including the following steps: S1. Install the central spherical hinge 11 at the bottom of the upper bearing platform 10, and install the lower bracket 12 at the top of the lower bearing platform 1. The central spherical hinge 11 is rotatably arranged on the lower bracket 12; this step provides the core support points for the subsequent installation of the swiveling drive device and ensures the rotational flexibility of the device.

[0025] S2. Hoist the annular rack 13 in sections into the lower bearing platform 1 in the foundation pit until the rack 13 moves near the rack foundation 14 of the lower bearing platform 1. The tooth part of the rack 13 faces outward, and the rack foundation 14 is located inside the rack 13, and the rack foundation 14 and the rack 13 are anchored and fixed to stabilize the rack 13; this solves the problem of high precision requirements for the installation of the rack, such as the ovality and concentricity of the assembly. Through the method of hoisting in sections and anchoring and fixing, the installation accuracy of the rack is ensured.

[0026] S3. Hang a chain block by using the installation hanging points pre-embedded at the bottom of the upper bearing platform 10. The chain block is connected to the rack 13, and the rack 13 is towed, lifted, and turned over by adjusting the chain block to position the rack 13 within the preset range; in this process, simple chain block equipment is used, avoiding the dependence on large-scale lifting equipment and reducing the installation difficulty.

[0027] S4. As Figure 3As shown, mark the contour line of the installation position of each roller car assembly 9. Lay the car guide rail 15 on the lower bearing platform 1 for the horizontal transportation of the roller car. The car guide rail 15 straddles above the rack 13. The bottom of the car guide rail is supported by pads. Install the towing car 16 on the car guide rail 15. Lift the roller car onto the towing car 16, and use the chain block installed at the center ball hinge 11 to drag the towing car 16 to move the roller car to directly above the slideway 2. Through the cooperation of the towing car and the chain block in this step, the precise transportation and positioning of the roller car are realized.

[0028] S5. As Figure 4 shown, vertically install several jacks 17 between the roller car and the slideway 2, and pressurize the jacks until the roller car is lifted to the bottom to separate from the towing car 16. Then remove the car guide rail 15 and the towing car 16, and gradually remove the pads 23 under the jacks 17 one by one until the roller car is positioned on the slideway 2. Remove the jacks, and the roller car is in place. Through the jacking and gradual unloading in this process, the smooth positioning of the roller car is ensured, and the installation difficulty caused by excessive weight is avoided.

[0029] S6. As Figure 5 shown, use a total station to measure and control the radial deviation of the roller car, and then use a manual jack to finely adjust it to the correct position. Temporarily weld and lock the roller car and the slideway 2. Through the high-precision measurement of the total station and the fine adjustment of the manual jack, the installation accuracy of the roller car is ensured, and the problem of high installation accuracy requirements is solved.

[0030] S7. As Figure 6 shown, lay the guide rail for the platform frame 3 on the lower bearing platform 1 for the horizontal transportation of the platform frame 3. Arrange the towing car 16 on the guide rail of the platform frame 3, and set the support block 18 and the jack 17 on the towing car 16. Lift the platform frame 3 onto the towing car 16; S8. As Figure 7 shown, use the chain block installed at the center ball hinge 11 to drag the towing car 16 to move the front part of the platform frame 3 above the rack 13. At this time, remove the first group of towing cars 16 and the support blocks 18 located in the front; S9. As Figure 8 shown, use the chain hoist 22 to continue dragging the platform frame 3 assembly inward to move to directly above the rack 13, remove the second group of towing cars 16 and the support blocks, and add the second group of towing cars 16 to the upper guide rail of the rack 13; S10. Repeat S8 - S9 until all the towing cars 16 and the support blocks 18 are removed; S11. As Figure 9-10 shown, continue to drag the platform frame 3 assembly to move to directly above the limit frame, and remove the guide rail and the support block at the rack 13; S12, Figure 11-12 As shown, continue to drag the trolley frame 3 assembly into place, control the meshing of the driven gear and the rack 13, remove the traction trolley 16 with the help of the jack, and remove the hand chain hoist at the same time, and the trolley frame 3 assembly is in place; (the sixth and seventh figures) S13, the small bracket at the lower part of the reducer frame is in place, and the guide wheel 19 of the inner ring of the rack 13 is installed on the small bracket. During the process of the trolley frame 3 assembly being in place, it is ensured that the rack 13 is tangent to the pitch circle of the driven gear; S14. Repeat S5-S13 until the installation of all other drive equipment devices is completed.

[0031] In one technical solution of the present invention, a steel rod is used as a roller and is placed under the rack 13; as the reducer 6 drives the rack 13 to move, the steel rod is continuously switched to the front of the rack 13. The steel rod is placed under the rack 13 and as the rack 13 moves, the steel rod continuously rolls and is switched to the front of the rack. This rolling method is similar to the movement of a roller, which can significantly reduce the direct friction between the rack 13 and the base, and avoid the difficulty of rack movement caused by excessive friction.

[0032] In one technical solution of the present invention, the S3 further includes the following steps: using a total station, a steel tape measure, and a level to measure the distance between the rack 13 and the rack base 14, using the inner circle marking points and the outer circle marking points of the rack base 14 as positioning control points for the rack 13, adjusting the radial and height positions of the rack 13 by means of a hand jack, fine-tuning bolts, and pads, and pouring concrete after re-measurement.

[0033] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A multi-point support swivel drive device, characterized in that: include: Several groups of driving equipment devices are evenly distributed on the annular slideway on the lower support platform, and the driving equipment devices include a trolley frame, a reduction frame, a reduction gear, a driving gear, a driven gear, and a roller trolley assembly; The roller trolley assembly rolls on the slideway, the trolley frame is arranged on the roller trolley assembly, and the two are connected, the loading structure is arranged on the trolley frame, and the loading structure is connected to the bottom of the upper bearing platform through the upper embedded plate surface; The reducer frame is installed in the frame of the trolley frame, the reducer is installed on the reducer frame, the output shaft of the reducer is connected to the driving gear, the driving gear and the driven gear are meshed with each other and are both arranged on the reducer frame; the driven gear is meshed with the annular rack for transmission, and the annular rack is fixed to the outer side of the annular lower support platform.

2. The multi-point support rotating drive device according to claim 1, characterized in that: The roller trolley assembly comprises a roller trolley, a limiting frame and a rubber pad, wherein the roller trolley is arranged at the bottom of the limiting frame through the rubber pad.

3. The installation method of the multi-point support swivel drive device according to any one of claims 1 to 2, characterized in that: The following steps are involved: Step 1: Install the center ball joint at the bottom of the upper platform and the lower bracket at the top of the lower platform, hang the annular rack section by section onto the lower platform in the foundation pit, and pull it to the preset range; Step 2: Lay a trolley guide rail on the lower platform for horizontal transportation of the roller trolley. The trolley guide rail passes over the rack. A traction trolley is installed on the trolley guide rail. The roller trolley is moved to the top of the slideway by dragging the traction trolley. The roller trolley is gradually placed on the slideway, and the roller trolley is temporarily welded and locked to the slideway. A support block and a jack are set on the traction trolley. Step 3: Drag the traction trolley to move the front of the trolley frame to above the rack. At this time, remove the first set of traction trolleys and support blocks in the front, continue to drag the trolley frame inward to just above the rack, remove the second set of traction trolleys and support blocks, and add the second set of traction trolleys to the upper guide rail of the rack; Step 4: Repeat step 3 until all traction trolleys and support blocks are removed; Step 5: Continue to drag the trolley frame to the top of the limit frame, and remove the guide rail and support block at the rack; Continue to drag the trolley frame into place, control the meshing of the driven gear and the rack, remove the traction trolley with the help of the jack, and remove the hand chain hoist at the same time, and the trolley frame is in place; Step 6: Repeat steps 2 to 5 until all remaining drive devices are installed.

4. The installation method of the multi-point support swivel drive device according to claim 3, characterized in that: Step one includes: S1. Install a central ball joint at the bottom of the upper support, and install a lower bracket at the top of the lower support. The central ball joint can be rotatably arranged on the lower bracket; S2, hoisting the annular rack section by section onto the lower pedestal in the foundation pit until the rack moves to the vicinity of the rack foundation of the lower pedestal, with the teeth of the rack facing outwards, the rack foundation located inside the rack, and anchoring and fixing the rack foundation and the rack to stabilize the rack; S3. Use the pre-buried installation hanging points at the bottom of the upper platform to hang the hand chain hoist, which is connected to the rack. The rack can be dragged, lifted, and turned over by adjusting the hand chain hoist to place the rack within the preset range.

5. The installation method of the multi-point support rotating drive device according to claim 4, characterized in that: Step 2 includes: S4. Mark the outline of the position to be installed of each roller trolley assembly, lay the trolley guide rail for horizontal transportation of the roller trolley on the lower platform, the trolley guide rail passes over the rack, the bottom of the trolley guide rail is supported by a pad, a traction trolley is installed on the trolley guide rail, the roller trolley is hoisted onto the traction trolley, and the traction trolley is dragged by the hand chain hoist installed at the center ball joint to move the roller trolley to the top of the slideway; S5. Install several jacks vertically between the roller trolley and the slideway, and pressurize the jacks until the roller trolley is lifted to the bottom and separated from the traction trolley. Then remove the trolley guide rail and the traction trolley, and unload all the jacks one by one and remove them step by step until the roller trolley is placed on the slideway. Remove the jacks and put the roller trolley in place. S6. Use a total station to measure and control the radial deviation of the roller trolley, then use a manual jack to fine-tune it into place, and temporarily weld and lock the roller trolley and the slideway; S7. Lay a trolley frame guide rail on the lower support platform for horizontal transportation of the trolley frame, arrange a number of traction trolleys on the trolley frame guide rail, set support blocks and jacks on the traction trolleys, and hoist the trolley frame onto the traction trolleys.

6. The installation method of the multi-point support rotating drive device according to claim 5, characterized in that: Step three includes: S8. Use the hand chain hoist installed at the center ball joint to drag the traction trolley to move the front of the trolley frame to above the rack. At this time, remove the first set of traction trolleys and support blocks located in the front; S9. Continue to drag the trolley frame inward until it is directly above the rack, remove the second set of traction trolleys and support blocks, and add the second set of traction trolleys to the upper guide rail of the rack.

7. The installation method of the multi-point support rotating drive device according to claim 6, characterized in that: The step five comprises: S11. Continue to drag the trolley frame to the top of the limit frame, and remove the guide rail and support block at the rack; S12, continue to drag the trolley frame into place, control the meshing of the driven gear and the rack, remove the traction trolley with the help of the jack, and remove the hand chain hoist at the same time, and the trolley frame is in place; S13. Put the small bracket at the bottom of the reducer frame into place, install the guide wheel of the inner ring of the rack on the small bracket, and during the positioning of the trolley frame, ensure that the pitch circle of the rack and the driven gear are tangent.

8. The installation method of the multi-point support rotating drive device according to claim 4, characterized in that: In S2, a steel rod is used as a roller and is placed under the lower part of the rack; as the reducer drives the rack to move, the steel rod is continuously switched to the front of the rack.

9. The installation method of the multi-point support rotating drive device according to claim 4, characterized in that: In S2, S3 further includes the following steps: using a total station, a steel tape measure, and a level to measure the distance between the rack and the rack base, using the inner circle marking points and the outer circle marking points of the rack base as rack positioning control points, adjusting the radial and height positions of the rack by means of a hand jack, fine-tuning bolts, and spacers, and pouring concrete after re-measurement.

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