Installation and commissioning method for the luffing mechanism of a quay crane and the luffing mechanism

Abstract

The present invention provides an installation and debugging method for a pitch mechanism of a quay crane and a pitch mechanism, wherein the installation and debugging method includes obtaining a reel that has been processed according to preset requirements; assembling the reel according to the row and assembly requirements to form a pitch mechanism; rotating a high-speed brake disc in the pitch mechanism and causing it to drive the reel to rotate without load; measuring the first jump data of the flange end face of the reel in the no-load state; judging whether the first jump data meets the first jump threshold; if so, installing the pitch mechanism on the quay crane. According to the installation and debugging method of the embodiment of the present invention, before the reel is installed on the quay crane, the high-speed brake disc in the pitch mechanism is used to drive the reel to rotate without load to measure the first jump data of the flange end face, and based on the first jump data, judging whether the reel needs to be adjusted in position, without repeatedly disassembling and assembling the reel for measurement and analysis, eliminating the process of disassembling and assembling the reel, saving the debugging time cycle, and greatly reducing the construction difficulty.

Description

Technical Field

[0001] The present invention relates to the field of quay crane installation, and particularly to an installation and commissioning method for the pitching mechanism of a quay crane and the pitching mechanism. Background Art

[0002] With the continuous transformation and upgrading of the global trade throughput, in order to meet the requirements of ship enlargement, container terminals are often equipped with large quay container cranes (referred to as quay cranes) to meet the loading and unloading operation needs. The large quay crane is often characterized by an increased outreach, and the increase in outreach will generate a greater load on the drum when pitching the boom.

[0003] In the prior art, generally, after the pitching mechanism is installed, the operation is directly carried out. When an abnormality occurs during the operation, it is necessary to check for abnormalities. If it is a problem with the pitching mechanism, operations such as disassembling it are also required, which is time-consuming and laborious. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an installation and commissioning method for the pitching mechanism of a quay crane that can detect abnormalities before installing the pitching mechanism on the quay crane.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] In a first aspect, an installation and commissioning method for the pitching mechanism of a quay crane according to an embodiment of the present invention includes:

[0007] Obtain a drum processed according to preset requirements;

[0008] Assemble the drum according to the row installation requirements to form a pitching mechanism;

[0009] Rotate the high-speed brake disc in the pitching mechanism and drive the drum to rotate without load;

[0010] Measure the first runout of the flange end face of the drum in the no-load state;

[0011] Judge whether the first runout meets the first runout threshold;

[0012] If so, install the pitching mechanism on the quay crane.

[0013] Further, obtaining a drum processed according to preset requirements includes:

[0014] Obtain the respective dimensions of the blank for processing the drum;

[0015] Obtain the machining allowance based on the respective dimensions of the blank;

[0016] For the blank, turning is performed based on the machining allowance to obtain the drum that is machined to meet the preset requirements.

[0017] Further, the turning based on the machining allowance includes:

[0018] Rough turning the blank;

[0019] After rough turning, welding shear blocks to the flange end face;

[0020] After that, finish turning the blank.

[0021] Further, it also includes:

[0022] Aligning the blank with the non-machined surface of the inner wall of the blank as the reference,

[0023] wherein the turning is performed based on the aligned blank.

[0024] Further, after installing the pitching mechanism on the quay crane, it includes:

[0025] Rotating the high-speed brake disc in the pitching mechanism and driving the drum to rotate idly;

[0026] Measuring the second runout of the flange end face of the drum in the no-load state;

[0027] Judging whether the second runout meets the second runout threshold.

[0028] Further, after installing the pitching mechanism on the quay crane, it also includes:

[0029] Performing pitching girder operation with the pitching mechanism and making the drum rotate slowly;

[0030] Measuring the third runout of the flange end face of the drum and the first pitching angle of the girder during rotation;

[0031] Adjusting the position and attitude of the drum based on the third runout and the first pitching angle.

[0032] Further, after installing the pitching mechanism on the quay crane, it includes:

[0033] Performing pitching girder operation with the pitching mechanism and making the drum rotate quickly;

[0034] Measuring the fourth runout data of the flange end face of the drum and the second pitching angle of the girder during rotation;

[0035] Adjusting the position and attitude of the drum based on the fourth runout data and the second pitching angle.

[0036] Further, adjusting the position and attitude of the reel includes:

[0037] Adjusting the position and attitude of the reel in the vertical direction by adjusting the thickness of the gasket between the bearing seat and the base;

[0038] And adjusting the position and attitude of the reel in the sea-land side direction by adjusting the position of the wedge block.

[0039] In a second aspect, an embodiment of the present invention further provides a quay crane pitching mechanism, including:

[0040] A motor;

[0041] A coupling and a speed reducer, the motor is connected to the input end of the speed reducer through the coupling;

[0042] A high-speed brake, one end of which is connected to the coupling and the other end is connected to the speed reducer;

[0043] A reel, the output end of the speed reducer is connected to the reel.

[0044] Further, the pitching mechanism further includes:

[0045] A bearing seat, the other end of the reel is installed on the bearing seat;

[0046] A base, the bearing seat is installed on the base;

[0047] A gasket, which is installed between the bearing seat and the base;

[0048] A wedge block, which is fixedly connected to the bearing seat, and the inclined surface direction of the wedge block is in the sea-land side direction.

[0049] At least one of the above technical solutions of the present invention has the following beneficial effects:

[0050] The installation and commissioning method for the quay crane pitching mechanism disclosed by the present invention drives the reel to rotate without load by using the high-speed brake disc in the pitching mechanism before the reel is installed on the quay crane, so as to measure the first runout data of the flange end face of the reel in the no-load state, and judge whether to adjust the position of the reel based on the first runout data. Based on this installation and commissioning method, there is no need to repeatedly disassemble and assemble the reel for measurement and analysis, saving the process of disassembling and assembling the reel, saving the debugging time cycle, greatly reducing the construction difficulty; reducing the impact of abnormal reel on quay crane operation, improving the stability of the reel after it is installed on the quay crane, and further improving the operation efficiency of the quay crane. Description of the Drawings

[0051] Figure 1Schematic diagram of the overall process of the installation and commissioning method for the luffing mechanism of the quay crane provided by the embodiment of the present invention;

[0052] Figure 2 Schematic diagram of the processing flow of the drum in the installation and commissioning method for the luffing mechanism of the quay crane provided by the embodiment of the present invention;

[0053] Figure 3 Top view structural diagram of the drum in the luffing mechanism of the quay crane provided by the embodiment of the present invention;

[0054] Figure 4 Side view structural diagram of the drum in the luffing mechanism of the quay crane provided by the embodiment of the present invention;

[0055] Figure 5 Is Figure 4 The sectional view at A-A in

[0056] Reference numerals:

[0057] a1, the first measurement point; b1, the second measurement point; c1, the third measurement point; d1, the fourth measurement point; 10, motor; 20, coupling; 30, high-speed brake; 40, reducer; 50, drum; 61, bearing seat; 62, gasket; 63, base; 64, wedge block; 71, shear block. Detailed implementation manners

[0058] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention fall within the scope of protection of the present invention.

[0059] During the erection and commissioning stage of the quay crane, due to the elastic deformation of the drum under actual load, the data installed in the no-load state has changed. In addition, due to the welding of shear blocks on the end faces after machining the assembly holes and flanges of the inner gear rings of the coupling for the luffing drum, problems such as out-of-tolerance flatness and roundness of the inner hole occur, resulting in deviations in the meshing of the low-speed coupling gears and abnormal sounds during the operation of the quay crane luffing mechanism. Such problems will have a greater impact on production efficiency and product quality.

[0060] To solve the above technical problems, the embodiment of the present invention provides an installation and commissioning method for the luffing mechanism of the quay crane. The installation and commissioning method debugs the luffing mechanism before installing it on the quay crane to determine whether the luffing mechanism is qualified, reduces the impact of abnormal drums on quay crane operations, and improves the quay crane operation efficiency.

[0061] First, a method for installation and commissioning of a luffing mechanism of a quay crane according to an embodiment of the present invention will be specifically described with reference to the accompanying drawings.

[0062] Specifically, as Figure 1 shown, a method for installation and commissioning of a luffing mechanism of a quay crane provided by an embodiment of the present invention includes the following steps:

[0063] S1. Obtain a drum machined according to preset requirements.

[0064] In one embodiment, as Figure 2 shown, S11. Obtain the respective dimensions of the blank for machining the drum.

[0065] S12. Obtain the machining allowance based on the respective dimensions of the blank. Ensure that the coaxiality error between the shaft head and the cylinder body is within a sufficient machining allowance range based on the machining allowance of the blank.

[0066] S13. For the blank, perform turning based on the machining allowance to obtain the drum machined according to preset requirements.

[0067] In one embodiment, performing turning based on the machining allowance specifically includes:

[0068] Rough turn the blank; after rough turning, weld the shear block on the flange end face; thereafter, perform finish turning on the blank. Welding the shear block on the flange end face before finish turning can avoid the hot work during the later assembly of the mechanism, which may cause deviation in the size of the drum flange end face. Welding the shear block on the flange end face and then performing finish turning can ensure that the drum flange end face is consistent with the drawing requirements and improve the machining accuracy of the drum.

[0069] In one embodiment, it further includes:

[0070] Align the blank with the non-machined surface of the inner wall of the blank as the reference, wherein the turning is performed based on the aligned blank. Calibrate the drum before machining it with a machine tool to improve the machining accuracy of the drum part.

[0071] S2. Assemble the drum according to the assembly requirements to form a luffing mechanism.

[0072] That is to say, assemble the drum machined according to preset requirements in step S1 according to the assembly requirements to form a luffing mechanism.

[0073] S3. Rotate the high-speed brake disc in the luffing mechanism and drive the drum to rotate without load.

[0074] Manually rotate the high-speed brake disc, and the high-speed brake disc drives the drum to rotate. The drum is in an unloaded state.

[0075] S4. Measure the first runout of the flange end face of the drum in the no-load state.

[0076] That is to say, after placing the measuring instrument at the output end of the coupling, measure the runout value of the flange end face of the drum in the no-load state, which is the first runout. The measuring instrument is preferably a dial indicator, but is not limited thereto.

[0077] S5. Determine whether the first runout data meets the first runout threshold.

[0078] That is to say, determine whether the first runout measured in step S4 meets the standard requirements.

[0079] S6. If so, install the luffing mechanism on the quay crane.

[0080] That is to say, if the judgment result in step S5 is yes, install the luffing mechanism on the quay crane; if the judgment result in step S5 is no, it is necessary to find the reason for non-compliance and make adjustments until the judgment result in step S5 is yes.

[0081] In one embodiment, after step S6, it further includes:

[0082] Rotate the high-speed brake disc in the luffing mechanism and drive the drum to rotate without load.

[0083] Measure the second runout of the flange end face of the drum in the no-load state.

[0084] Determine whether the second runout meets the second runout threshold.

[0085] That is to say, after the luffing mechanism is installed on the quay crane, measure the luffing mechanism in the same measurement method as steps S3 to S5. That is, drive the drum to be in the no-load state through the high-speed brake disc and measure the runout data of the flange end face of the drum, and determine whether it is qualified.

[0086] After the no-load measurement, it further includes:

[0087] Use the luffing mechanism to perform luffing girder operation and make the drum rotate slowly.

[0088] Measure the third runout of the flange end face of the drum and the first luffing angle of the girder during the rotation process.

[0089] Adjust the position and attitude of the drum based on the third runout and the first luffing angle.

[0090] That is to say, after the measurement is qualified when the drum is in the no-load state, then use the pitching mechanism to perform actual operations, that is, use the pitching mechanism to pitch the main girder, and make the drum rotate slowly, and measure it during the slow rotation of the drum, and record the pitching angle of the main girder when the jump data changes greatly.

[0091] After measuring the data during the slow rotation of the drum, it further includes:

[0092] Use the pitching mechanism to pitch the main girder and make the drum rotate quickly.

[0093] Measure the fourth jump data of the flange end face of the drum during the rotation process and the second pitching angle of the main girder.

[0094] Adjust the position and attitude of the drum based on the fourth jump data and the second pitching angle.

[0095] That is to say, after the measurement data during the slow rotation of the drum is qualified, then use the pitching mechanism to pitch the main girder and make the drum rotate quickly, and measure it during the quick rotation of the drum, and record the pitching angle of the main girder when the jump data changes greatly.

[0096] The above three debugging methods measure the pitching mechanism installed on the quay crane in a progressive manner to ensure that the pitching mechanism has high stability and reliability under high-level operation conditions.

[0097] During the above three debugging methods, when the measured jump data is unqualified, adjust it through the following methods:

[0098] Adjust the position and attitude of the drum in the vertical direction by adjusting the thickness of the gasket between the bearing seat and the base; and adjust the position and attitude of the drum in the sea-land side direction by adjusting the position of the wedge block.

[0099] That is to say, through the measured jump value, the sea-land side direction of the drum is adjusted in the front-back direction through the waist-shaped bolt holes of the bearing seat at the other end of the drum, and the up-down direction of the drum is adjusted in the high-low direction through the thickness of the backing plate of the bearing seat at the other end of the drum. The specific adjustment amount can be calculated according to the following formula:

[0100]

[0101] Among them, the jump difference is the jump difference of the flange end face of the drum, that is, the up-down difference or left-right difference of the flange end face, and X is the amount that the drum needs to be adjusted.

[0102] Specifically, after disconnecting the drum bearing housing from the base according to the calculation results, adjust the thickness of the shims of the drum bearing housing or adjust the position of the wedges in the sea and land directions.

[0103] The above debugging method does not require repeated disassembly and assembly of the drum for measurement and analysis, eliminating the process of disassembling and assembling the drum, saving the debugging time cycle, and greatly reducing the construction difficulty.

[0104] The embodiment of the present invention also provides a quay crane luffing mechanism, as Figures 3 to 5 shown, the luffing mechanism includes a motor 10, a coupling 20, a reducer 40, a high-speed brake 30, and a drum 50.

[0105] Among them, the motor 10 is connected to the input end of the reducer 40 through the coupling 20; one end of the high-speed brake 30 is connected to the coupling 20, and the other end is connected to the reducer 40; the output end of the reducer 40 is connected to the drum 50.

[0106] The motor 10 is connected to the input end of the luffing mechanism reducer 40 through the coupling 20. At the same time, a high-speed brake 30 is configured at the position of the coupling 20. The output end of the reducer 40 is meshed and connected to the inner gear ring of the drum 50 through a toothed coupling. The other end of the drum 50 is fixed on the bearing housing 61 and is equipped with a low-speed brake. The power output by the motor 10 is transmitted to the drum 50 through the reducer 40, and the wire rope is wound around the drum 50 to realize the operation of the luffing front girder.

[0107] Further, the luffing mechanism further includes a bearing housing 61, a base 63, shims 62, and wedges 64.

[0108] Among them, the other end of the drum is installed on the bearing housing; the bearing housing 61 is installed on the base 63; the shims 62 are installed between the bearing housing 61 and the base 63; the wedges 64 are fixedly connected to the bearing housing 661, and the inclined surface direction of the wedges 64 is in the sea and land directions.

[0109] Further, the flange end face of the drum 50 includes a first measurement point a1, a second measurement point b1, a third measurement point c1, and a fourth measurement point d1. The first measurement point a1, the second measurement point b1, the third measurement point c1, and the fourth measurement point d1 are evenly distributed at the upper and lower edges and the left and right edges of the flange end face of the drum to measure the differences between the upper and lower ends and the left and right ends of the flange end face; shear blocks 71 are provided on the flange end face of the drum 50.

[0110] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An installation and commissioning method for the luffing mechanism of a quay crane, characterized in that, it includes: Obtain a drum processed according to preset requirements; Assemble the drum according to the row installation requirements to form a luffing mechanism; Rotate the high-speed brake disc in the luffing mechanism and drive the drum to rotate without load; Measure the first runout of the flange end face of the drum in the no-load state; Judge whether the first runout meets the first runout threshold; If so, install the luffing mechanism on the quay crane; After installing the luffing mechanism on the quay crane, rotate the high-speed brake disc in the luffing mechanism and drive the drum to rotate without load; measure the second runout of the flange end face of the drum in the no-load state; judge whether the second runout meets the second runout threshold; use the luffing mechanism to perform the luffing girder operation and make the drum rotate slowly; measure the third runout of the flange end face of the drum obtained during the rotation and the first luffing angle of the girder; adjust the position and attitude of the drum based on the third runout and the first luffing angle; use the luffing mechanism to perform the luffing girder operation and make the drum rotate quickly; measure the fourth runout data of the flange end face of the drum during the rotation and the second luffing angle of the girder; adjust the position and attitude of the drum based on the fourth runout data and the second luffing angle; wherein, adjusting the position and attitude of the drum includes adjusting the position and attitude of the drum in the vertical direction by adjusting the thickness of the gasket between the bearing seat and the base and adjusting the position of the wedge block to adjust the position and attitude of the drum in the sea-land side direction.

2. The installation and commissioning method for the luffing mechanism of a quay crane according to claim 1, characterized in that, Obtaining a drum processed according to preset requirements includes: Obtain the respective dimensions of the blank for processing the drum; Obtain the machining allowance based on the respective dimensions of the blank; For the blank, perform turning based on the machining allowance to obtain the drum processed according to preset requirements.

3. The installation and commissioning method for the luffing mechanism of a quay crane according to claim 2, characterized in that, Performing turning based on the machining allowance includes: Rough turn the blank; After rough turning, weld shear blocks on the flange end face; After that, perform finish turning on the blank.

4. The installation and commissioning method for the luffing mechanism of a quay crane according to claim 2, characterized in that, It further includes: Align the blank with the non-machined surface of the inner wall of the blank as the reference, wherein, the turning is performed based on the aligned blank.

5. A luffing mechanism of a quay crane, characterized in that, Applied to the installation and commissioning method according to any one of claims 1-4, the luffing mechanism of the quay crane includes: Motor; Coupling and reducer, the motor is connected to the input end of the reducer through the coupling; High-speed brake, one end of which is connected to the coupling and the other end is connected to the reducer; Drum, the output end of the reducer is connected to the drum.

6. The luffing mechanism of a quay crane according to claim 5, characterized in that, It further includes: Bearing seat, the other end of the drum is installed on the bearing seat; Base, the bearing seat is installed on the base; Gasket, which is installed between the bearing seat and the base; A wedge block, which is fixedly connected to the bearing seat, and the inclined surface direction of the wedge block is in the sea-land side direction.

Images