Electric crane propeller strut tower body subassembly process

Abstract

The invention relates to an electric crane propeller strut tower body subassembly process. The process comprises the following steps: S1, upper and lower cylinder body subassembly; s2, folding the upper cylinder body and the lower cylinder body; s3, assembling the rest of auxiliary parts; according to the subassembly process, the propeller strut barrel subassembly is divided into an upper barrel subassembly and a lower barrel subassembly, a slewing bearing, a slewing mechanism, a main hook winch, a variable-amplitude winch and a hinge point assembly are sequentially installed during the lower barrel subassembly, and a pulley block, a cooling device and an electric control device are sequentially installed during the upper barrel subassembly. Before the upper cylinder body and the lower cylinder body are folded, the auxiliary hook winch and the hydraulic station are placed on the upper surface of the lower cylinder body to be temporarily fixed, and after the upper cylinder body and the lower cylinder body are folded and welded into a whole, the auxiliary hook winch and the hydraulic station are installed in place. The operation space of the next station is completely open, mutual interference is avoided, and high-precision positioning and reliable fixing of accessories are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of preparation of a crane, and in particular to a process for assembling a tower body of a crane. BACKGROUND

[0002] Electric cranes are widely used in offshore engineering equipment such as self-elevating drilling platforms, self-elevating work platforms, drilling ships, and offshore engineering installation ships. An electric crane is composed of a cylindrical base, a herringbone frame, and an arm frame. The base is fixed to the structure of a ship or platform. Since the electric crane needs to be used in a marine environment, the main equipment of the electric crane is placed inside the body as much as possible to prevent corrosion from the marine environment. On offshore engineering equipment, the space and weight occupied by the electric crane are required to be small, and the electric crane is required to have a small tail rotation space, resulting in a compact design structure of the electric crane, which brings higher requirements for production and installation.

[0003] The herringbone frame of the electric crane is large in size and heavy in weight. When the herringbone frame is prepared, the herringbone frame is divided into an upper cylinder and a lower cylinder for production. After the upper cylinder and the lower cylinder are produced, the upper cylinder and the lower cylinder are combined to form a herringbone tower body. A plurality of supporting mechanisms, including a rotating bearing, a rotating mechanism, a main hook winch, an amplitude winch, a hinge point assembly, a pulley block, a cooling device, and an electric control device, are installed on the herringbone tower body. It is a great challenge to achieve high-precision positioning and reliable fixation of the supporting mechanisms in a limited space and under segmented conditions.

[0004] Therefore, the present application provides a process for assembling a herringbone tower body of an electric crane to solve the above problems. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a process for assembling a herringbone tower body of an electric crane to achieve high-precision positioning and reliable fixation of supporting mechanisms in a limited space and under segmented conditions.

[0006] To solve the above technical problems, the technical solution of the present application is as follows: a process for assembling a herringbone tower body of an electric crane, which is characterized by the following steps: S1, upper and lower cylinder assembly: sequentially installing a rotating bearing, a rotating mechanism, a main hook winch, an amplitude winch, and a hinge point assembly on the lower cylinder, and sequentially installing a pulley block, a cooling device, and an electric control device on the upper cylinder; S2, the upper and lower cylinder body is closed: on the ground, the first part of the auxiliary hook winch is integrated, and then the auxiliary hook winch is hoisted and placed at the top end of the lower cylinder body, and then the hydraulic station is hoisted and placed at the top end of the lower cylinder body, and the position of the lower cylinder body is avoided. The position of the lower cylinder body is temporarily fixed, then the upper cylinder body is hoisted above the auxiliary hook winch, the state of the upper cylinder body is adjusted, then the upper cylinder body is slowly and smoothly lowered, and the upper cylinder body is avoided. The collision between the auxiliary hook winch and the hydraulic station, when the lower end of the upper cylinder body approaches the lower cylinder body, adjust the assembly pair of the four holes on the lower end of the upper cylinder body to the upper hole of the lower cylinder body. After alignment, the upper cylinder body is lowered and placed in place, and the welding of the upper and lower cylinder bodies is completed after the welding preparation work. The surface of the welding seam is polished after welding, and the welding seam is 100% UTMT. After the flaw detection is qualified, the damaged paint is repaired, and then the auxiliary hook winch and the hydraulic station are installed in place; S3, the remaining matching parts are assembled: after the upper and lower cylinder bodies are closed, the internal ladder and platform are installed in place, and the upper and lower through holes are installed. Then the driver's room is hoisted and installed in the mounting hole of the upper cylinder body, the bolts are installed and tightened, and the driver's room and the upper cylinder body are sealed. Finally, the hydraulic pipeline is laid and installed in place, and the cable pipeline and water cooling pipeline are installed in place.

[0007] Further, the installation process of the slewing bearing includes: S1-1-1, place four cylinder jigs on the flat and solid ground; S1-1-2, hoist the slewing bearing to the cylinder jig, and place the quenched soft belt S point on the slewing bearing, and ensure that the distance between the cylinder jig edge and the center of the slewing bearing bolt hole is 100mm. After adjusting the overall level of the slewing bearing, pad with thin steel plate, and then fix the slewing bearing and the cylinder jig with a clamp; S1-1-3, hoist the lower cylinder and slowly place it on the surface of the slewing bearing, and adjust the bolt hole on the slewing bearing to the threaded hole of the lower cylinder flange plate; S1-1-4, first install the stud in place, so that the stud is threadedly connected in the bolt hole on the slewing bearing and the threaded hole of the lower cylinder flange plate, then install the washer and nut in place, and then check the installation of the slewing bearing. After checking that the installation of the slewing bearing is correct, the nut is tightened to the position required by the design by using the hydraulic bolt stretcher.

[0008] Further, the installation process of the slewing mechanism includes: S1-2-1, first install the pinion and the slewing brake of the slewing mechanism on the slewing reducer on the bottom surface, and the pinion and the slewing brake are installed on the bottom and top of the slewing reducer respectively; S1-2-2, hoist the rotary reducer to the mounting hole inside the lower cylinder flange plate, adjust the pinion gear and the rotary bearing inner tooth meshing to meet the requirements, at the same time, align the rotary reducer upper bolt hole with the flange plate bolt hole, and place the rotary reducer oil drain valve outward for manual operation, then install and tighten the rotary reducer fixing bolt and washer; S1-2-3, install the cover outside the pinion gear in place, assemble the rotary encoder components except the encoder gear into an integral body, then install it on one side of the rotary reducer, weld and fix it in place after installation, then install and fix the rotary encoder gear in place.

[0009] Further, the installation process of the main hook winch includes: S1-3-1, place the main hook winch motor, main hook winch motor support, and main hook winch low-speed brake into the lower cylinder to be installed; S1-3-2, assemble the main hook winch drum, main hook winch reducer, main hook winch low-speed brake, and main hook winch bearing connector to form a main hook winch drum assembly, the main hook winch reducer and the main hook winch bearing connector are installed on both sides of the hook winch drum, and the main hook winch low-speed brake is installed on the main hook winch reducer; S1-3-3, hoist the main hook winch drum assembly into the lower cylinder for installation; S1-3-4, install the flange shaft in the main hook winch bearing connector in cooperation with the main hook winch drum, and install and fix it with the installation bolts between the lower cylinder; S1-3-5, assemble the main hook winch motor on the main hook winch motor support, drill the bolt holes in the lower cylinder with the bolt holes in the main hook winch motor support, and then install and fix the main hook winch motor support with the lower cylinder with bolts; S1-3-6, arrange the main hook winch rope blocking rod above the main hook winch drum, and then install it in place by using the bolt holes in the lower cylinder; S1-3-7, install the main hook winch limiting device and the main hook winch rope loosening limiting pressure plate in place, the main hook winch limiting device is installed on the main hook winch bearing connector, and the main hook winch rope loosening limiting pressure plate is positioned and assembled on the flange plate of the main hook winch drum under the condition that the steel wire rope on the main hook winch drum does not have relative friction with the flange plate.

[0010] Further, the installation process of the variable amplitude winch includes: S1-4-1, place the variable amplitude winch motor, variable amplitude winch motor support, and flange shaft of the variable amplitude winch bearing connector into the lower cylinder to be installed; S1-4-2, assemble the amplitude winch drum, the amplitude winch reducer, the amplitude winch high-speed brake and the amplitude winch gear to form an amplitude winch drum assembly, the amplitude winch reducer and the amplitude winch gear are respectively installed on both sides of the amplitude winch drum, and the amplitude winch high-speed brake is installed on the amplitude winch reducer; S1-4-3, hoist the amplitude winch drum assembly into the lower cylinder for installation; S1-4-4, the amplitude winch high-speed brake is installed in place in cooperation with the amplitude winch drum, and is respectively installed with the lower cylinder and fixed by bolts; S1-4-5, assemble the amplitude winch motor on the amplitude winch motor support, drill bolt holes in the lower cylinder through the bolt hole of the amplitude winch motor support, and then install and fix the amplitude winch motor support and the lower cylinder by bolts; S1-4-6, arrange the amplitude winch rope blocking rod above the amplitude winch drum, install the amplitude winch rope blocking rod in place by drilling bolt holes in the lower cylinder; S1-4-7, install the amplitude winch limiting device and the amplitude winch rope loosening limiting pressing plate in place, the amplitude winch limiting device is installed on the amplitude winch gear, and the amplitude winch rope loosening limiting pressing plate is positioned and assembled on the flange plate of the amplitude winch drum under the condition that there is no relative friction between the steel wire rope on the amplitude winch drum and the flange plate.

[0011] Further, the installation process of the hinge point assembly includes: S1-5-1, assemble the bearing seat, the joint bearing, the sealing ring and the transparent cover into a bearing seat assembly, the joint bearing is installed in the bearing seat, the sealing ring is installed outside the joint bearing, and the transparent cover is installed on the end face of the bearing seat; S1-5-2, hoist and place the bearing seat assembly inside the two ear plates of the lower cylinder, and place the shaft sleeve in place so that the shaft sleeve is sleeved inside the sealing ring; S1-5-3, insert the hinge shaft into the hole of the outer ear plate of the lower cylinder from the outside, and then insert it into the joint bearing, gently and evenly knock the hinge shaft with a copper rod, the hinge shaft passes through the shaft sleeve, and after the end of the hinge shaft extends out of the inner ear plate hole, stop knocking; S1-5-4, install the shaft end cover on the end of the hinge shaft, and couple and fix the shaft end cover and the hinge shaft by bolts; S1-5-5, install the shear-resistant block outside the shaft end cover and tightly against the shaft end cover, and then weld and fix the shear-resistant block and the lower cylinder.

[0012] Further, the installation process of the pulley block includes: S1-6-1, horizontally place the upper cylinder structure on the cylinder body jig; S1-6-2, respectively, the main hook pulley block, auxiliary hook pulley block and amplitude pulley block is installed to the top of the upper cylinder of each pulley support lug plate.

[0013] Further, the installation process of the cooling device comprises: S1-7-1, the cooling layer platform is hoisted and placed on the cooling device fixing jig, and then the box body of the cooling device is hoisted and placed on the cooling layer platform; the cooling layer platform and the box body of the cooling device are firmly bound and fixed; S1-7-2, the upper cylinder is hoisted and turned from a horizontal state to a vertical state, and then the upper cylinder is hoisted to the top of the cooling device box body of the cooling device fixing jig; the upper cylinder is slowly lowered from top to bottom, and the state of the upper cylinder is adjusted during the lowering process to avoid the upper cylinder from colliding with the cooling device box body; S1-7-3, four jacks are arranged around the bottom of the cooling device fixing jig; after the upper cylinder is lowered into position, the state of the upper cylinder is adjusted by using the four jacks to make the cooling layer platform and the pre-welding part in the upper cylinder align as a whole; S1-7-4, the cooling layer platform and the pre-welding part in the upper cylinder are first firmly fixed, and then the box body of the cooling device is shifted to the final installation position and firmly fixed.

[0014] Further, the installation process of the electric control device comprises: S1-8-1, the electric control layer platform is hoisted and placed on the electric control device fixing jig, and then the box body of the electric control device is hoisted and placed on the electric control layer platform; the electric control layer platform and the box body of the electric control device are firmly bound and fixed; S1-8-2, the upper cylinder is hoisted and turned from a horizontal state to a vertical state, and then the upper cylinder is hoisted to the top of the electric control device box body of the electric control device fixing jig; the upper cylinder is slowly lowered from top to bottom, and the state of the upper cylinder is adjusted during the lowering process to avoid the upper cylinder from colliding with the electric control device box body; S1-8-3, four jacks are arranged around the bottom of the electric control device fixing jig; after the upper cylinder is lowered into position, the state of the upper cylinder is adjusted by using the four jacks to make the electric control layer platform and the pre-welding part in the upper cylinder align as a whole; S1-8-4, the electric control layer platform and the pre-welding part in the upper cylinder are first firmly fixed, and then the box body of the electric control device is shifted to the final installation position and firmly fixed.

[0015] Further, the welding preparation work is to clean the surface of the closing butt joint of the outer side of the upper and lower cylinders, and to paste ceramic gaskets on the part of the inner side without partition.

[0016] The advantages of the present application are: The assembling process of the application is convenient and ensures that each matching part in the cylinder is installed in place during assembling, and the tower body assembling is divided into upper cylinder assembling and lower cylinder assembling, the rotary bearing, rotary mechanism, main hook winch, luffing winch and hinge point assembly are sequentially installed during lower cylinder assembling, the pulley block, cooling device and electric control device are sequentially installed during upper cylinder assembling, and before the upper and lower cylinders are folded, the auxiliary hook winch and hydraulic station are temporarily fixed on the upper surface of the lower cylinder, after the upper and lower cylinders are folded and welded into one body, the auxiliary hook winch and hydraulic station are installed in place, and finally the ladder platform, driver room and pipeline are installed, through optimizing the installation sequence of each matching part, it is ensured that the working space of the next station is completely open after the work of one station is completed, mutual interference is avoided, and high-precision positioning and reliable fixing of the matching parts are realized under the conditions of limited space and segmentation. BRIEF DESCRIPTION OF DRAWINGS

[0017] The application will be further described in detail below in combination with the drawings and specific embodiments.

[0018] Figure 1 It is a front view of the electric Keling crane herringbone tower body of the application.

[0019] Figure 2 It is a side view of the electric Keling crane herringbone tower body of the application.

[0020] Figure 3 It is an installation schematic view of the rotary bearing of the application.

[0021] Figure 4 It is an installation schematic view of the rotary mechanism of the application.

[0022] Figure 5 It is an installation schematic view of the main hook winch of the application.

[0023] Figure 6 It is an installation schematic view of the luffing winch of the application.

[0024] Figure 7 It is an installation schematic view of the hinge point assembly of the application.

[0025] Figure 8 It is an installation schematic view of the cooling device of the application.

[0026] Figure 9 It is a folding schematic view of the upper and lower cylinders of the application. DETAILED DESCRIPTION

[0027] In order to further illustrate the technical means and effects taken by the application to achieve the predetermined purposes, the specific embodiments, structures, features and effects of the application are described in detail below in combination with the drawings and preferred embodiments.

[0028] Example This embodiment provides a process for assembling the A-frame tower body using an electric crane, such as... Figure 1-2 As shown, it includes the following steps: S1. Upper and lower cylinder 1 assembly: On the lower cylinder 1, install the slewing bearing 11, slewing mechanism 12, main hook winch 13, luffing winch 14, and hinge assembly 15 in sequence. On the upper cylinder 2, install the pulley block 21, cooling device 22, and electrical control device 23 in sequence.

[0029] Among them, such as Figure 3 As shown, the installation process of the slewing bearing 11 includes: S1-1-1. Place four cylindrical jigs 111 evenly on a flat and firm ground. S1-1-2. Hoist the slewing bearing 11 onto the cylindrical jig 111. Place the quenched soft strip S point on the slewing bearing 11 on the cylindrical jig 111, and ensure that the distance from the edge of the cylindrical jig 111 to the center of the bolt hole of the slewing bearing 11 is 100mm. After adjusting the overall level of the slewing bearing 11, use a thin steel plate to padded it, and then use a clamp to fix the slewing bearing 11 and the cylindrical jig 111 firmly. S1-1-3. Hoist the lower cylinder 1 and slowly place it on the surface of the slewing bearing 11, and adjust the bolt holes on the slewing bearing 11 to align with the threaded holes on the flange plate of the lower cylinder 1. S1-1-4. First, install the studs in place, so that the stud threads are connected to the bolt holes on the slewing bearing 11 and the threaded holes on the flange plate of the lower cylinder 1. Then, install the washers and nuts and tighten them initially. After checking that the slewing bearing 11 is installed correctly, use a hydraulic bolt tensioner to tighten the nuts to the required position according to the design requirements.

[0030] like Figure 4 As shown, the installation process of the rotary mechanism 12 includes: S1-2-1 First, install the pinion 121 and the rotary brake 123 of the rotary mechanism 12 onto the rotary reducer 122 on the bottom surface. The pinion 121 and the rotary brake 123 are respectively installed at the bottom and top of the rotary reducer 122. S1-2-2. Hoist the rotary reducer 122 into the mounting hole inside the flange plate of the lower cylinder 1, adjust the meshing of the pinion 121 with the internal gear of the rotary bearing 11 to meet the requirements, align the bolt holes on the rotary reducer 122 with the bolt holes on the flange plate, and place the oil drain valve of the rotary reducer 122 facing outward for easy manual operation. Then install and tighten the fixing bolts and washers of the rotary reducer 122. S1-2-3, install the cover 124 outside the pinion gear 121 in place, assemble the components of the rotary encoder except the encoder gear into an integral body, install on one side of the rotary reducer 122, weld and fix in place after installation, then install and fix the gear of the rotary encoder.

[0031] As shown in Figure 5 , the installation process of the main hook winch 13 includes: S1-3-1, place the main hook winch motor 131, the main hook winch motor support 132, and the main hook winch low-speed brake 133 into the lower cylinder 1 in the installation position; S1-3-2, assemble the main hook winch drum assembly by assembling the main hook winch drum 134, the main hook winch reducer 135, the main hook winch low-speed brake 133, and the main hook winch bearing connector 136, install the main hook winch reducer 135 and the main hook winch bearing connector 136 on both sides of the main hook winch drum 134, and install the main hook winch low-speed brake 133 on the main hook winch reducer 135; S1-3-3, hoist the main hook winch drum assembly into the lower cylinder 1 for installation; S1-3-4, install the flange shaft in the main hook winch bearing connector 136 in cooperation with the main hook winch drum 134, and install and fix the bolts between the main hook winch bearing connector 136 and the lower cylinder 1, respectively; S1-3-5, assemble the main hook winch motor 131 on the main hook winch motor support 132, drill bolt holes in the lower cylinder 1 using the bolt holes on the main hook winch motor support 132, and then install and fix the main hook winch motor support 132 to the lower cylinder 1 with bolts; S1-3-6, arrange the main hook winch rope stopping rod 137 above the main hook winch drum 134, install the main hook winch rope stopping rod 137 in place by drilling bolt holes in the lower cylinder 1; S1-3-7, install the main hook winch limiting device 138 and the main hook winch rope loosening limiting pressure plate in place, install the main hook winch limiting device 138 on the main hook winch bearing connector 136, and position and assemble the main hook winch rope loosening limiting pressure plate on the flange plate of the main hook winch drum 134 under the condition that the steel wire rope on the main hook winch drum 134 does not have relative friction with the flange plate.

[0032] As shown in Figure 6 , the installation process of the amplitude winch 14 includes: S1-4-1, place the amplitude winch motor 141, the amplitude winch motor support 142, and the flange shaft of the amplitude winch 14 bearing connector into the lower cylinder 1 in the installation position; S1-4-2, assemble the amplitude winch drum 143, the amplitude winch reducer 144, the amplitude winch high-speed brake 145 and the amplitude winch gear 146 to form an amplitude winch drum assembly, the amplitude winch reducer 144 and the amplitude winch gear 146 are respectively installed on both sides of the amplitude winch drum 143, and the amplitude winch high-speed brake 145 is installed on the amplitude winch reducer 144; S1-4-3, hoist the amplitude winch drum assembly into the lower cylinder 1 for installation; S1-4-4, the amplitude winch high-speed brake 145 is installed in place in cooperation with the amplitude winch drum 143, and is respectively installed with a bolt between the lower cylinder 1 and fixed; S1-4-5, assemble the amplitude winch motor 141 on the amplitude winch motor support 142, drill bolt holes in the lower cylinder 1 through the bolt hole on the amplitude winch motor support 142, and then install and fix the amplitude winch motor support 142 and the lower cylinder 1 with bolts; S1-4-6, arrange the amplitude winch rope blocking rod above the amplitude winch drum 143, install the amplitude winch rope blocking rod in place by drilling bolt holes in the lower cylinder 1; S1-4-7, install the amplitude winch limiting device 147 and the amplitude winch rope loosening limiting pressing plate 148 in place, the amplitude winch limiting device 147 is installed on the amplitude winch gear 146, and the amplitude winch rope loosening limiting pressing plate 148 is positioned and assembled on the flange plate of the amplitude winch drum 143 under the condition that there is no relative friction between the steel wire rope on the amplitude winch drum 143 and the flange plate.

[0033] As Figure 7 shown, the installation process of the hinge point assembly 15 includes: S1-5-1, first assemble the bearing seat 151, the joint bearing 152, the sealing ring 153 and the transparent cover 154 into a bearing seat assembly, the joint bearing 152 is installed in the bearing seat 151, the sealing ring 153 is installed outside the joint bearing 152, and the transparent cover 154 is installed on the end face of the bearing seat 151; S1-5-2, hoist and place the bearing seat assembly inside the two ear plates of the lower cylinder 1, and place the shaft sleeve 155 in place so that the shaft sleeve 155 is sleeved inside the sealing ring 153; S1-5-3, insert the hinge shaft 156 into the hole of the outside ear plate of the lower cylinder 1 from the outside, and then insert it into the joint bearing 152, gently and evenly knock the hinge shaft 156 with a copper rod, the hinge shaft 156 passes through the shaft sleeve 155, and after the end of the hinge shaft 156 extends out of the inside ear plate hole, stop knocking; S1-5-4, install the shaft end cover 157 on the end of the hinge shaft 156, and couple and fix the shaft end cover 157 with the hinge shaft 156 with bolts; S1-5-5, the shear block 158 is installed outside the shaft end cover 157 and tightly attached to the shaft end cover 157, and then the shear block 158 is welded and fixed with the lower cylinder 1.

[0034] The installation process of the pulley block 21 includes: S1-6-1, the upper cylinder 2 structure is horizontally placed on the cylinder bed frame; S1-6-2, the main hook pulley block 211, the auxiliary hook pulley block 212 and the luffing pulley block 213 are respectively installed on the top pulley support ear plate of the upper cylinder 2.

[0035] As shown in Figure 8 The installation process of the cooling device 22 includes: S1-7-1, the cooling device fixing bed frame 4 is arranged on the ground, the cooling layer platform 221 is hoisted and placed on the cooling device fixing bed frame 4, and then the box body of the cooling device 22 is hoisted and placed on the cooling layer platform 221. The cooling layer platform 221 and the box body of the cooling device 22 are firmly bound and fixed; S1-7-2, the upper cylinder 2 is hoisted and turned from the horizontal state to the vertical state, and then the upper cylinder 2 is hoisted and placed above the box body of the cooling device 22 on the cooling device fixing bed frame 4. Slowly lower the upper cylinder 2 from top to bottom, and pay attention to adjust the state of the upper cylinder 2 during the lowering process to avoid the upper cylinder 2 from colliding with the box body of the cooling device 22; S1-7-3, four jacks 3 are arranged around the bottom of the cooling device fixing bed frame 4. After the upper cylinder 2 is lowered into position, the state of the upper cylinder 2 is adjusted by using the jacks at the four corners, so that the cooling layer platform 221 is aligned with the pre-welded part in the upper cylinder 2 as a whole; S1-7-4, the cooling layer platform 221 and the pre-welded part in the upper cylinder 2 are first firmly fixed, and then the box body of the cooling device 22 is shifted to the final installation position and firmly fixed.

[0036] The installation process of the electric control device 23 includes: S1-8-1, the electric control device fixing bed frame is arranged on the ground, the electric control layer platform is hoisted and placed on the electric control device fixing bed frame, and then the box body of the electric control device 23 is hoisted and placed on the electric control layer platform. The electric control layer platform and the box body of the electric control device 23 are firmly bound and fixed; S1-8-2, the upper cylinder 2 is hoisted and turned from the horizontal state to the vertical state, and then the upper cylinder 2 is hoisted and placed above the box body of the electric control device 23 on the electric control device fixing bed frame. Slowly lower the upper cylinder 2 from top to bottom, and pay attention to adjust the state of the upper cylinder 2 during the lowering process to avoid the upper cylinder 2 from colliding with the box body of the electric control device 23; S1-8-3, four jacks are arranged around the bottom of the electric control device fixed cradle, and after the upper cylinder 2 is lowered in place, the state of the upper cylinder 2 is adjusted by using the four jacks to make the electric control layer platform and the pre-welding piece in the upper cylinder 2 align as a whole; S1-8-4, the electric control layer platform and the pre-welding piece in the upper cylinder 2 are first fixed firmly, and then the box body of the electric control device 23 is shifted to the final installation position and fixed firmly.

[0037] S2, the upper and lower cylinders 1 are folded: as shown in Figure 9 the figure, the auxiliary hook winch 24 is first assembled into a whole on the ground, and then is hoisted and placed at the top end of the lower cylinder 1, avoiding the position of the lower cylinder 1 folding weld and being temporarily fixed. Then the hydraulic station 25 is hoisted and placed at the top end of the lower cylinder 1, avoiding the position of the lower cylinder 1 folding weld and being temporarily fixed. Then the upper cylinder 2 is hoisted above the auxiliary hook winch 24, and after the state of the upper cylinder 2 is adjusted, the upper cylinder 2 is slowly and stably lowered, avoiding collision between the upper cylinder 2 and the auxiliary hook winch 24 and the hydraulic station 25. When the lower end of the upper cylinder 2 approaches the lower cylinder 1, the assembly alignment hole on the four sides of the lower end of the upper cylinder 2 is adjusted to be completely aligned with the sample hole on the lower cylinder 1. After alignment, the upper cylinder 2 is lowered and placed in place. The folding butt joint surface on the outer side of the upper and lower cylinders is cleaned, and the inner side without a partition is pasted with a ceramic lining. After the welding preparation work is completed, the folding butt joint of the upper and lower cylinders is welded. After welding, the weld surface is polished, and the weld is 100% UTMT inspected. After the inspection is qualified, the damaged paint is repaired, and then the auxiliary hook winch 24 and the hydraulic station 25 are installed in place. S3, remaining accessory assembly: after the upper and lower cylinders are folded, the internal ladder and platform are installed in place, and the external ladder and platform are installed in place. Then the cab 26 is hoisted and installed into the installation hole of the upper cylinder 2, the bolts are installed and tightened, and the sealing treatment between the cab 26 and the upper cylinder 2 is performed. Finally, the hydraulic pipeline is laid and installed in place, and the cable pipeline and water cooling pipeline are installed in place.

[0038] The electrically-driven crown block herringbone tower body part assembling process is divided into upper part 2 assembling and lower part 1 assembling for the convenience and ensuring that each matching part in the cylinder is installed in place during assembling, the lower part 1 assembling is sequentially installed with rotary bearing 11, rotary mechanism 12, main hook winch 13, luffing winch 14, hinge point assembly 15, the upper part 2 assembling is sequentially installed with pulley block 21, cooling device 22, electric control device 23, and before the upper part 2 and lower part 1 are folded, the auxiliary hook winch 24 and hydraulic station 25 are temporarily fixed on the upper surface of the lower part 1, after the upper part 2 and lower part 1 are folded and welded into one, the auxiliary hook winch 24 and hydraulic station 25 are installed in place, finally, the ladder platform, driver's room 26 and pipeline are installed, through optimizing the installation sequence of each matching part, it is ensured that the working space of the next station is completely open after the work of one station is completed, the mutual interference is avoided, under the condition of limited space and segmentation, the high-precision positioning and reliable fixing of the matching parts are realized.

[0039] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, change and modification of the above embodiments, which does not depart from the technical solution of the present application, is still within the scope of the present application.

Claims

1. A process for assembling a tower section of a guyed tower crane, characterized in that: It comprises the following steps: S1, upper and lower cylinder body installation: install rotary bearing, rotary mechanism, main hook winch, luffing winch, hinge point assembly on the lower cylinder body in turn, install pulley block, cooling device, electric control device on the upper cylinder body in turn; S2, upper and lower cylinder body closing: on the ground, first assemble the auxiliary hook winch into a whole, then hoist and place the auxiliary hook winch to the top end of the lower cylinder body, place and temporarily fix the auxiliary hook winch avoiding the closing weld position of the lower cylinder body, then hoist and place the hydraulic station to the top end of the lower cylinder body, pay attention to place and temporarily fix the hydraulic station avoiding the closing weld position of the lower cylinder body, then hoist the upper cylinder body above the auxiliary hook winch, adjust the state of the upper cylinder body, then slowly and smoothly lower the upper cylinder body, pay attention to avoid the collision between the upper cylinder body and the auxiliary hook winch and the hydraulic station, when the lower end of the upper cylinder body approaches the lower cylinder body, adjust the assembly alignment hole on the four sides of the lower end of the upper cylinder body to be completely aligned with the sample piercing hole on the lower cylinder body, then place the upper cylinder body in place after lowering, after the preparation work before welding is completed, weld the closing butt joint of the upper and lower cylinders, polish the surface of the weld after welding, make 100% UTMT flaw detection on the weld, after the flaw detection is qualified, repair the damaged paint, then install the auxiliary hook winch and the hydraulic station in place; S3, remaining accessory assembly: after the upper and lower cylinders are closed, install the internal ladder and platform in place, pass through the upper and lower, then install the external ladder and platform in place, then hoist and install the cab into the installation hole of the upper cylinder body, install and tighten the bolts, seal the space between the cab and the upper cylinder body, finally, lay and install the hydraulic pipeline in place, install the cable pipeline and water cooling pipeline in place.

2. The process for erecting a tower section of a gin pole tower crane according to claim 1, wherein: The installation process of the rotary bearing comprises: S1-1-1, place four cylinder jigs on the flat and solid ground; S1-1-2, hoist the rotary bearing to the cylinder jig, place the quenched soft belt S point on the rotary bearing on the cylinder jig, and ensure that the distance between the cylinder jig side and the center of the rotary bearing bolt hole is 100mm, adjust the overall level of the rotary bearing, then pad with thin steel plate, and fix the rotary bearing and the cylinder jig with a clamp; S1-1-3, hoist the lower cylinder and slowly place it on the surface of the rotary bearing, adjust the bolt hole on the rotary bearing to be centered with the threaded hole of the lower cylinder flange plate; S1-1-4, first install the stud in place, make the stud threaded connection in the bolt hole on the rotary bearing and the threaded hole of the lower cylinder flange plate, then install the washer and nut in place and initially tighten, after checking that the rotary bearing is installed correctly, use the hydraulic bolt stretcher to tighten the nut to the required position.

3. The process of claim 1, wherein the process further comprises: The installation process of the rotary mechanism comprises: S1-2-1, first install the pinion and rotary brake of the rotary mechanism on the rotary reducer on the bottom surface, the pinion and the rotary brake are installed on the bottom and top of the rotary reducer respectively; S1-2-2, hoist the rotary reducer to the mounting hole inside the lower cylinder flange plate, adjust the pinion gear and rotary bearing inner tooth meshing to meet the requirements, at the same time, align the rotary reducer upper bolt hole with the flange plate bolt hole, and place the rotary reducer oil drain valve outward for manual operation, then install and tighten the rotary reducer fixing bolt and washer; S1-2-3, install the cover outside the pinion gear, assemble the rotary encoder components except the encoder gear into one body, then install it on one side of the rotary reducer, weld and fix it in place after installation, then install and fix the rotary encoder gear.

4. The process of claim 1, wherein the process further comprises: The installation process of the main hook winch includes: S1-3-1, put the main hook winch motor, main hook winch motor support, main hook winch low-speed brake into the lower cylinder to be installed; S1-3-2, assemble the main hook winch drum, main hook winch reducer, main hook winch low-speed brake and main hook winch bearing connector to form a main hook winch drum assembly, the main hook winch reducer and the main hook winch bearing connector are installed on both sides of the hook winch drum respectively, and the main hook winch low-speed brake is installed on the main hook winch reducer; S1-3-3, hoist the main hook winch drum assembly to the lower cylinder for installation; S1-3-4, the flange shaft in the main hook winch bearing connector is installed in cooperation with the main hook winch drum, and is respectively installed with the installation bolt between the lower cylinder and fixed; S1-3-5, assemble the main hook winch motor on the main hook winch motor support, drill the bolt hole of the lower cylinder with the bolt hole of the main hook winch motor support, and then install and fix the main hook winch motor support and the lower cylinder with bolts; S1-3-6, arrange the main hook winch rope blocking rod above the main hook winch drum, and then install the main hook winch rope blocking rod in place by using the bolt hole of the main hook winch rope blocking rod drilled in the lower cylinder; S1-3-7, install the main hook winch limiting device and the main hook winch rope loosening limiting pressure plate in place, the main hook winch limiting device is installed on the main hook winch bearing connector, and the main hook winch rope loosening limiting pressure plate is positioned and assembled on the flange plate of the main hook winch drum under the condition that the steel wire rope on the main hook winch drum does not have relative friction with the flange plate.

5. The electric crane A-frame tower body assembly process according to claim 1, characterized in that: The installation process of the luffing winch includes: S1-4-1, put the luffing winch motor, luffing winch motor support and flange shaft of luffing winch bearing connector into the lower cylinder to be installed; S1-4-2, assemble the luffing winch drum, luffing winch reducer, luffing winch high-speed brake and luffing winch gear to form a luffing winch drum assembly, the luffing winch reducer and the luffing winch gear are installed on both sides of the luffing winch drum respectively, and the luffing winch high-speed brake is installed on the luffing winch reducer; S1-4-3, hoist the luffing winch drum assembly to the lower cylinder for installation; S1-4-4, install the luffing winch high-speed brake in cooperation with the luffing winch drum, and respectively install the bolt between the lower cylinder and fix it; S1-4-5, assemble the luffing winch motor on the luffing winch motor support, drill bolt holes in the lower cylinder according to the bolt holes on the luffing winch motor support, and then install and fix the luffing winch motor support and the lower cylinder with bolts; S1-4-6, arrange the luffing winch rope blocking rod above the luffing winch drum, and then install the luffing winch rope blocking rod in place by drilling bolt holes in the lower cylinder; S1-4-7, install the luffing winch limiting device and the luffing winch rope loosening limiting plate in place, the luffing winch limiting device is installed on the luffing winch gear, and the luffing winch rope loosening limiting plate is installed in place under the condition that there is no relative friction between the steel wire rope on the luffing winch drum and the flange plate.

6. The process of claim 1, wherein the process further comprises: The installation process of the hinge point assembly includes: S1-5-1, first assemble the bearing seat, joint bearing, sealing ring and transparent cover into a bearing seat assembly, the joint bearing is installed in the bearing seat, the sealing ring is installed outside the joint bearing, and the transparent cover is installed on the end face of the bearing seat; S1-5-2, hoist and place the bearing seat assembly inside the two ear plates of the lower cylinder, and place the shaft sleeve in place at the same time, so that the shaft sleeve is sleeved inside the sealing ring; S1-5-3, insert the hinge shaft into the hole of the outer ear plate of the lower cylinder from the outside, and then insert it into the joint bearing, gently and evenly knock the hinge shaft with a copper rod, the hinge shaft passes through the shaft sleeve, and after the end of the hinge shaft extends out of the inner ear plate hole after knocking, stop knocking; S1-5-4, install the shaft end cover on the end of the hinge shaft, and couple and fix the shaft end cover and the hinge shaft with bolts; S1-5-5, install the shear block outside the shaft end cover and tightly against the shaft end cover, and then weld and fix the shear block and the lower cylinder.

7. The process of claim 1, wherein the process further comprises: providing a plurality of Kevlar® cords; and wrapping the plurality of Kevlar® cords around the plurality of Kevlar® cords to form a Kevlar® cord wrap. The installation process of the pulley block includes: S1-6-1, horizontally place the upper cylinder structure on the cylinder bed frame; S1-6-2, respectively install the main hook pulley block, the auxiliary hook pulley block and the luffing pulley block on the top pulley support ear plate of the upper cylinder.

8. The process of claim 1, wherein the process further comprises: providing a plurality of Kevlar® cords; and wrapping the plurality of Kevlar® cords around the plurality of Kevlar® cords to form a Kevlar® cord wrap. The installation process of the cooling device includes: S1-7-1, arrange the cooling device fixing bed frame on the ground, hoist and place the cooling layer platform on the cooling device fixing bed frame, and then hoist and place the box body of the cooling device on the cooling layer platform, and firmly bind and fix the cooling layer platform and the box body of the cooling device; S1-7-2, hoist the upper cylinder from the horizontal state to the vertical state, and then hoist the upper cylinder above the box body of the cooling device on the cooling device fixing bed frame, slowly lower the upper cylinder from top to bottom, and pay attention to adjust the state of the upper cylinder during the lowering process to avoid the upper cylinder colliding with the box body of the cooling device; S1-7-3, arrange four jacks around the bottom of the cooling device fixing bed frame, and after the upper cylinder is lowered in place, adjust the state of the upper cylinder by using the four jacks to make the cooling layer platform and the pre-welded part inside the upper cylinder align as a whole; S1-7-4, first firmly fix the cooling layer platform and the pre-welded part inside the upper cylinder, and then fix the box body of the cooling device in the final installation position.

9. The electric crane A-frame tower assembly process according to claim 1, characterized in that: The installation process of the electric control device includes: S1-8-1, arrange the electric control device fixed bed on the ground, after hoisting and placing the electric control layer platform on the electric control device fixed bed, bind and fix the electric control layer platform and the box body of the electric control device firmly; S1-8-2, hoist the upper cylinder from the horizontal state to the vertical state, then hoist the upper cylinder to the top of the box body of the electric control device fixed bed, slowly lower the upper cylinder from top to bottom, and pay attention to adjust the state of the upper cylinder during the lowering process to avoid the upper cylinder from colliding with the box body of the electric control device; S1-8-3, arrange four jacks around the bottom of the electric control device fixed bed, after the upper cylinder is lowered into position, adjust the state of the upper cylinder by using the jacks at four corners, so that the electric control layer platform is aligned with the pre-welded parts in the upper cylinder as a whole; S1-8-4, first fix the electric control layer platform and the pre-welded parts in the upper cylinder firmly, then move the box body of the electric control device to the final installation position and fix it firmly.

10. The process of claim 1, wherein: the tower section is a gin pole tower section. The welding preparation work is to clean the surface of the closing butt joint of the outer side of the upper and lower cylinders, and to paste ceramic gaskets on the parts without partition plates on the inner side.

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