[0022] The technical solution of this patent will be described in further detail below in conjunction with specific embodiments.
[0023] A molding and positioning process for an assembled pin-pull ring concrete electric pole connecting member includes the following steps:
[0024] 1) The binding and forming of the steel pole skeleton:
[0025] a) Complete the fixation of the longitudinal steel bars and the frame ring to form a steel frame;
[0026] b) Starting from the end of the reinforcing steel frame where the connecting steel parts are not installed, the spiral steel bars are tightly wound 3 times at a position 30mm from the end, and then the spiral reinforcing bars are evenly wound on the outside of the skeleton at a pitch of @110mm until it is away from the connecting steel parts Up to 1000mm from the mounting end; the connecting steel parts are flanges or steel plate rings;
[0027] c) Tie the spiral steel bar firmly on the steel frame, and place the installation end of the connecting steel part 500mm in front of the end of the bearing platform to complete the binding of the pole steel frame;
[0028] 2) Measurement, correction, and welding of the perpendicularity between the connecting plane of the connecting steel parts and the central axis of the steel bar skeleton:
[0029] a) The connecting steel parts include a reinforcing steel anchor plate and a welding steel ring of the reinforcing steel frame arranged on one side of the reinforcing steel anchor plate. The connecting steel parts are tied with a wire rope so that the connection plane is perpendicular to the central axis of the reinforcing steel frame. The steel part is hoisted horizontally until its center is as high as the center of the connecting end of the reinforcing steel frame;
[0030] b) Move the crane, insert the steel frame welding steel ring of the connecting steel part into the end of the steel frame until the end face of the steel bar is 5mm from the prestressed steel anchor plate, and weld the connecting steel part and the uppermost longitudinal steel bar together by electric welding, confirm The connecting steel parts will not fall, and then disassemble the wire rope and remove the crane;
[0031] c) Check the verticality between the connecting end face of the connecting steel part and the central axis of the reinforcing steel frame by using a sling hammer using the cross vertical correction positioning method, and use electric welding to connect the connecting steel part to the uppermost longitudinal steel bar to connect the central axis of the steel part The centrally symmetrical last longitudinal steel bar is firmly anchored to ensure that the corrected verticality will not change;
[0032] d) Turn the steel frame over 90°, and then use a plumb hammer to verify the verticality of the connecting end face of the connected steel parts with the central axis of the steel frame by using the cross vertical correction positioning method. After the verticality is qualified, use electric welding to weld all The longitudinal steel bars and the connecting steel parts are welded firmly, and the connecting steel parts and the reinforcing steel frame must be connected as a whole;
[0033] e) After the overall connection between the connecting steel parts and the reinforcing steel frame is qualified, the qualified identification mark shall be carried out, and then classified and stored. Any steel frame that has not passed the inspection shall not be put into production.
[0034] The tools to choose in actual use are:
[0035] Selection of welding tools:
[0036] a) 1 set of 12.0×3.0m steel frame assembly bearing platform;
[0037] b) One B400 AC welding machine;
[0038] c) 1 pair of hanging hammers;
[0039] d) 1 4-pound hand hammer;
[0040] e) One 150mm steel ruler.
[0041] Production and technical requirements of steel frame assembly bearing platform:
[0042] a) Taking one end of the upper plane of the bearing platform as the reference, press along the length The slope is placed so that the bearing platform is sloped along the length, ( Is the design taper of the conical circular concrete pole);
[0043] b) The bearing platform should be welded firmly without shaking;
[0044] c) The plane on the bearing platform should be flat;
[0045] d) The length of the bearing platform should be greater than the forming length of the largest specification steel frame;
[0046] e) The formed steel frame is placed on the bearing platform, and its central axis should be horizontal;
[0047] f) The formed steel frame assembly bearing platform should be able to bear the entire weight of the entire steel frame without deformation or collapse.
[0048] The quality acceptance standard and error value of the welding forming of the assembled conical ring-shaped concrete pole reinforcement frame and connecting members:
[0049] a) The standard value of the error of the perpendicularity between the end face of the connecting steel part and the axis of the reinforcement frame: ±1.0mm;
[0050] b) Welds connecting steel parts and longitudinal steel bars should be double-sided welding, and the height of the welds should not be less than 10mm, and there should be no welding quality defects such as porosity, slag inclusion, and unilateral welding, and all welds are not covered by coating welding slag;
[0051] c) The support ring should be sealed into a ring without opening;
[0052] d) The ring diameter of all frame force rings should conform to the design regulations, the diameter error value: ±2.0mm; the position error value: ±5.0mm;
[0053] e) The longitudinal steel bars should be evenly distributed along the circumference, and the spacing error value: ±2.0mm;
[0054] f) Longitudinal steel bar length error value: ±20.0mm; position error value: ±20.0mm;
[0055] g) Spiral steel pitch error value: ±10.0mm.
[0056] Assembled-pin ring poles are connected by two (or several) poles by bolting (or welding), and each pole is required to have a bolted flange or welded steel plate ring (hereinafter referred to as To connect the structural parts) should be firmly welded to the steel frame of each pole. At the same time, it is required that the connection plane of each section of the pole must be perpendicular to its central axis, and the error shall not exceed ±1.0mm. However, in the past, in the production of assembled pin-shaped circular poles, there was no correct forming and positioning process and operating procedures for the connecting members to guide and standardize the assembly and positioning of the assembled pin-shaped circular pole connecting member and its reinforcing steel skeleton. In the process of measurement and positioning, the operator was allowed to arbitrarily form and position, resulting in the unqualified verticality of the connecting plane of the connecting member of each assembly type ring-shaped pole and the central axis of the pole. Each assembly type pinning ring produced The connection of the pole connecting components is skewed, resulting in a relatively large skewing of the assembled-tip ring-shaped pole, and the curvature of the assembled-pin-pinned ring pole after assembly is unqualified.
[0057] The reason for the skew after assembly of the assembled pin-pin ring pole is that the connecting plane of the connecting member of each assembled pin-pin ring pole is not perpendicular to the central axis of the pole, and the reason why the two are not perpendicular is: due to assembly The shape of the frame of the pin-pin ring-shaped pole is tapered, and the upper plane of the original steel frame bearing platform is horizontal. When the steel frame of the assembled pin-pin ring pole is placed on the table, it is assembled. The central axis of the rebar skeleton of the circular pin-shaped pole is at a certain angle with the horizontal plane. As a result, it is difficult for the operator to correctly implement the connection member and the reinforced steel frame when the connecting member is welded to the assembled pin-shaped circular pole steel frame. The verticality of the central axis was verified, which resulted in different degrees of skew between the connection plane of the connecting member of each assembly-type ring-shaped pole and the central axis of the steel skeleton, which resulted in the assembly-type ring-shaped pole assembling at the construction site. When the curvature is unqualified.
[0058] Increasing the verticality between the connecting plane of the connecting member of each assembly-type pull-out ring-shaped pole and the central axis of the pole to minimize the verticality error is the key to preventing the bending of the assembled pole. If the quality of the connecting member of the electric pole is qualified, how to find the correction datum for the verticality between the connecting member and the central axis of the electric pole's reinforcing steel skeleton, and find the correct method to measure, correct and control the verticality between the above two? Is the top priority, my thinking is:
[0059] Change the state of the upper plane of the steel reinforcement frame to make the bearing platform, change from flat to slope, place the central axis of the steel frame in a horizontal state, make the central axis of the horizontally placed steel frame become the calibration reference, and then introduce the "cross vertical "Line correction method" uses the principle and method of plumb verticality to implement simple and effective correction and measurement of the perpendicularity between the connecting plane of the connecting member and the central axis of the steel frame, which simplifies the forming and positioning process to the greatest extent and reduces the difficulty of correction.
[0060] The invention regulates and guides the assembling process of the connecting components, starting from the operation method and the correction technology, adopts simple and easy process methods, and standardizes the forming and positioning process, so as to ensure that the verticality of each power-saving pole connecting component meets the quality Requirement to ensure the quality of the assembled ring-shaped pole.
[0061] The steps of the cross vertical line correction positioning method are:
[0062] a) Place the central axis of the assembled ring-shaped pole or the steel frame of the pole in a horizontal position;
[0063] b) Put the hanging rope of the plumb bob about 1.0m long, grasp the end of the rope firmly by hand to make the plumb droop freely, slowly move the vertical line until it almost touches the connecting end surface, and observe the distance between the vertical line and the connecting end surface If you find that there is a gap below, hit the back of the connecting steel part below with a hammer to move the connecting end face forward until the connecting end face is in full contact with the vertical line; if there is a gap above, use Gently tap the back above the connecting end face with a hand hammer to move the connecting end face forward until the connecting end face comes into full contact with the vertical line.
[0064] As for the assembled ring-shaped pole, it is necessary to measure the perpendicularity between the connecting plane of each pole connecting member and the central axis of the pole. If the above-mentioned perpendicularity is to be measured, controlled and accurately positioned, It is necessary to quickly and accurately find the central axis of the assembled pin-shaped circular pole, that is, the central axis of the pole's steel frame, and make it horizontal, and then use it as the measurement reference, and use the cross and vertical cross method to use the hanging wire of the plumb The vertical line formed by the central axis is the measurement reference, and the verticality of the two degrees of freedom of the connecting plane is measured and positioned separately, which can easily be assembled with a connecting member with a small deviation of the verticality. Electric pole.
[0065] The technical core of the cross vertical line correction positioning method is:
[0066] 1) The taper of the assembled ring pole As a benchmark, place the original horizontally placed electric pole steel frame bearing platform and press The slope becomes a continuous slope along the length direction, so that after the pole steel frame is placed on the technically transformed bearing platform, its central axis will always remain horizontal, so that the central axis of the horizontally placed steel frame can truly become a connection Benchmark for verticality measurement and calibration of components;
[0067] 2) When assembling the connecting members, the cross vertical line correction method is adopted, and the verticality of the connecting member to the central axis of the reinforcing steel skeleton on the two degrees of freedom on the connecting plane of the connecting member is realized by the method of rolling the steel frame on the bearing platform. Carry out effective measurement and control, and control the verticality error within ±1.0mm.
[0068] The present invention analyzes the occurrence mechanism of the skew of the assembly-type pull-out ring-shaped electric pole connecting member, and specifically proposes methods and technical measures to prevent the connection plane of the assembled-type pull-out ring-shaped electric pole connecting member from being skewed. The forming and positioning of the rod connecting members and the technical transformation of the process method are carried out. The upper plane of the bearing platform is made by changing the steel frame, and the slope is changed from flat to the slope. The central axis of the steel frame is placed in a horizontal state, so that the horizontally placed steel frame The central axis of the steel bar becomes the calibration reference, and then the "cross vertical line correction method" is introduced, using the plumb vertical principle and method to implement simple and effective correction and measurement of the perpendicularity between the connecting plane of the connecting member and the central axis of the reinforcing steel skeleton. Simplifies the molding positioning process and reduces the difficulty of calibration.
[0069] The preferred embodiments of this patent are described in detail above, but this patent is not limited to the above embodiments. It can also be made without departing from the purpose of this patent within the scope of knowledge possessed by those of ordinary skill in the art. Various changes.
