Parallel guide rail base mounting method

Abstract

The application provides a parallel guide rail base mounting method, comprising the following steps: first, providing guide rail base segments, each guide rail base segment comprising a bottom support, a horizontal panel and a fixed base plate connected in sequence; then, making a mounting reference line, determining the mounting position of the parallel guide rail base according to the mounting reference line; then, mounting the parallel guide rail base to a predetermined position, and confirming and processing the position where the mounting allowance of the bottom support is out of tolerance; finally, butting and mounting the parallel guide rail base with the hull plate of the corresponding mounting position, and repairing and replacing the fixed base plate with mounting precision out of tolerance. By controlling the mounting precision of the guide rail base segment, the mounting precision of the parallel guide rail base, and then adjusting the fixed base plate, the parallelism and flatness mounting requirements of the parallel guide rail base can be met, the mounting precision is ensured, the on-site installation difficulty and waste rate are reduced, and the use cost of personnel and materials is greatly saved.

Description

Technical Field

[0001] This invention relates to the technical field of shipbuilding, and in particular to a method for installing a parallel guide rail base. Background Technology

[0002] Elevators are typically equipped with two parallel linear guide rails, which allow them to move vertically or horizontally on a base. Especially on land, elevators with double linear guide rails are widely used in equipment such as machine tools and elevators. Ships also utilize various lifting mechanisms during construction and operation. Compared to the relatively stable operating environment on land, the installation of guide rails on ships is more difficult due to external factors such as the construction space environment and the deformation of the ship's own structure, which in turn increases the difficulty of installing the guide rail base.

[0003] Double linear guide rail bases are usually installed on the slipway. Traditional installation methods focus on the later stages of installation, which leads to insufficient precision control. If there is a lot of on-site correction required for the hull structure at the installation location of the guide rail base, the guide rail base will also need to be cut and repaired extensively, increasing the amount of rework and even leading to serious consequences such as scrapping the guide rail base, which greatly increases the construction cost of the guide rail base.

[0004] Therefore, how to provide a parallel guide rail base installation method that ensures the parallelism and flatness of the double linear guide rail base while enabling accurate and rapid installation and reducing unnecessary manpower and material costs such as on-site scrap and rework has become an urgent problem to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to provide a method for installing a parallel guide rail base, which can accurately and quickly install the base while ensuring the parallelism and flatness of the double linear guide rail base, thereby reducing unnecessary manpower and material costs such as on-site scrap and rework.

[0006] This invention provides a method for installing a parallel guide rail base, comprising the following steps:

[0007] Provides guide rail base segments, each of the guide rail base segments including a bottom support, a horizontal panel and a fixing pad connected in sequence, the bottom support being used to connect the horizontal panel to the hull body plate, and the fixing pad being disposed on the surface of the horizontal panel on the side away from the hull body plate;

[0008] An installation mark plate is set in the installation area of ​​the parallel guide rail base, and the installation reference line determined by the installation mark plate is used as the installation reference to determine the installation position of each guide rail base segment on the hull plate. Multiple guide rail base segments together define the installation position of the parallel guide rail base.

[0009] The parallel guide rail base is pre-positioned for installation, and the distance between the horizontal panel and the outer plate of the hull is measured after pre-positioning. Based on the measurement results, the positions where the installation allowance of the bottom support exceeds the tolerance are cut.

[0010] The parallel guide rail base is connected and fixed to the hull plate at the corresponding installation position. The installation accuracy of the fixing pad is re-measured. If the re-measurement result is out of tolerance, the out-of-tolerance value is recorded, and the fixing pad at the corresponding position is replaced.

[0011] In one possible implementation, each of the guide rail base segments is numbered, and the parallel guide rail bases are sequentially connected, installed, and fixed according to the numbering order of the guide rail base segments.

[0012] In one possible implementation, the dimensions of each of the guide rail base segments may be the same or different.

[0013] In one possible implementation, the steps of pre-positioning the parallel guide rail base and subsequently docking and fixing it with the hull plate specifically include proceeding sequentially from stern to bow or from bottom to top.

[0014] In one possible implementation, the parallel guide rail base supports the elevator's operation in both horizontal and vertical directions. When the elevator operates horizontally, the corresponding parallel guide rail base is pre-positioned, installed, and fixed in a direction from stern to bow. When the elevator operates vertically, the corresponding parallel guide rail base is pre-positioned, installed, and fixed in a direction from bottom to top.

[0015] In one possible implementation, prior to the pre-positioning of the parallel guide rail base, the method further includes measuring the deformation of the hull plating corresponding to the installation position of the parallel guide rail base, and correcting the deformation area until the hull construction standards are met.

[0016] In one possible implementation, the installation reference line includes a first reference line and a second reference line that are perpendicular to each other. The parallel guide rail base is arranged symmetrically about the second reference line, and the fixing pad is parallel to the first reference line and maintains a preset distance.

[0017] In one possible implementation, the step of determining the installation position of the parallel guide rail base specifically includes using a total station and an auxiliary steel wire pulling method to determine two installation center lines of the parallel guide rail base, and the two installation center lines relative to the second reference line must meet a preset symmetry threshold range.

[0018] In one possible implementation, the step of retesting the installation accuracy of the fixing pads specifically includes measuring the flatness of each fixing pad and the parallelism of each fixing pad to the first reference line using a total station and an optical inclinometer.

[0019] In one possible implementation, the bottom support web and a plurality of elbow plates are connected by cross welding in a cross shape.

[0020] Compared with the prior art, the beneficial effects of the present invention are at least as follows:

[0021] This invention provides a method for installing a parallel guide rail base, comprising the following steps: First, providing guide rail base segments, each segment including a bottom support, a horizontal panel, and a fixing pad connected sequentially; then, creating an installation baseline and determining the installation position of the parallel guide rail base based on the baseline; next, pre-positioning the parallel guide rail base for installation, and confirming and addressing any locations where the bottom support installation allowance exceeds the tolerance based on the distance between the horizontal panel and the hull plate; finally, aligning and fixing the parallel guide rail base with the corresponding hull plate at the installation position, and repairing or replacing any fixing pads with excessive installation accuracy. This invention, by pre-controlling the installation accuracy of the guide rail segments, completes the installation and fixing of the parallel guide rail base before controlling the installation accuracy of the fixing pad. Finally, only the fixing pad needs adjustment to meet the parallelism and flatness requirements of the parallel guide rail base, ensuring installation accuracy while reducing on-site installation difficulty and rework rate, significantly saving personnel and material costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a parallel guide rail base according to an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram illustrating the direction of an installation reference line according to an embodiment of the present invention.

[0025] Figure 3 This is a front-view schematic diagram of the mounting structure of a parallel guide rail base according to an embodiment of the present invention.

[0026] Figure 4This is a side view schematic diagram of the mounting structure of a parallel guide rail base according to an embodiment of the present invention.

[0027] Illustration:

[0028] 100 Guide rail base segment; 110 Bottom support; 111 Web plate; 112 Elbow plate; 120 Horizontal panel; 130 Fixed pad. Detailed Implementation

[0029] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or operated through other different specific embodiments, and various details in the present invention can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, the terms "first" and "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0031] According to one aspect of the present invention, a method for mounting a parallel guide rail base is provided, see [link to relevant documentation]. Figures 1-4 Specifically, it includes the following steps:

[0032] First, in step one, a guide rail base segment 110 is provided. Each guide rail base segment 110 includes a bottom support 110, a horizontal panel 120, and a fixing pad 130 connected in sequence. The bottom support 110 includes a web plate 111 and multiple elbow plates 112, with the elbow plates 112 symmetrically arranged on both sides of the web plate 111 and vertically welded to the two opposite surfaces of the web plate 111. The horizontal panel 120 is connected to the elbow plates 112 and the web plate 111 in a cross-shaped manner, so that when the guide rail base is subsequently connected to the hull outer plate, the horizontal panel 120 can maintain a preset distance from the hull outer plate, and the stability of the connection between the guide rail base segment 110 and the hull outer plate can be the deck or bulkhead of the hull.

[0033] The number of fixing pads 130 includes multiple pads, which are spaced apart on the surface of the horizontal panel 120 away from the hull hull. Both the horizontal panel 120 and the fixing pads 130 must meet strict dimensional specifications during manufacturing to provide a planar foundation for the subsequent installation accuracy of the parallel guide rails. For example, in this embodiment, the flatness of each horizontal panel 120 should not exceed 0.2 mm, and the thickness of each fixing pad 130 should not be less than 18 mm.

[0034] Preferably, after the guide rail base segment 110 is assembled, the flatness of the horizontal panel 120 and the thickness of the fixing pad 130 need to be checked again to ensure that each guide rail base segment 110 meets the accuracy requirements of the manufacturing stage.

[0035] Due to its excessive length, the parallel guide rail base needs to be segmented to facilitate processing, transportation, and installation. The dimensions of each guide rail base segment 110 can be the same or different, depending on the overall length of the parallel guide rail and the hull structure at the installation location. For example, in this embodiment, in areas with relatively flat hull structures, the dimensions of the guide rail base segments 110 can be the same. However, when there are multiple protruding reinforcing structures on the hull hull (such as reinforcing T-bars), the segment of the parallel guide rail should be located between two adjacent reinforcing structures to avoid embedded installation and thus reduce installation difficulty.

[0036] Preferably, each guide rail base segment 110 is also numbered, so that the parallel guide rail bases can be installed and fixed sequentially according to the numbering order of the guide rail base segments 110 to improve installation efficiency.

[0037] Preferably, each fixing plate 130 has through holes made during the manufacturing stage for subsequent bolt connection with the guide rail equipment.

[0038] Next, in step two, installation markers are set up in the installation area of ​​the parallel guide rail bases. The installation reference line determined by the installation markers is used as the installation reference to determine the installation position of each guide rail base segment 110 on the hull hull. Multiple guide rail base segments 110 collectively define the installation position of the parallel guide rail bases. Setting a unified installation reference is more conducive to controlling the positional accuracy during the subsequent assembly and alignment process of the guide rail base segments 110.

[0039] In one implementation, see Figure 2 The installation reference lines include a first reference line and a second reference line that are perpendicular to each other. The first reference line extends from the stern to the bow, and the second reference line can extend from the starboard side to the port side, or it can extend from the lower deck of the hull upwards. The intersection of the first reference line and the second reference line is the center of the elevator hatch opening.

[0040] For example, in this embodiment, the parallel guide rail bases are arranged symmetrically about the second reference line. Correspondingly, the step of determining the installation position of the parallel guide rail bases can be carried out by using a total station and an auxiliary steel wire pulling method, based on the preset spacing between the parallel guide rail bases, to determine the installation center line of each guide rail base on the outer plate of the ship's hull. With the second reference line as the center, the two installation center lines are located on both sides of the second reference line and are symmetrical to each other. The positions of the two installation center lines correspond to the installation positions of the parallel guide rail bases.

[0041] Preferably, the two mounting center lines relative to the second reference line must meet a preset symmetry threshold range. More preferably, the symmetry between the two mounting center lines and the second reference line should not exceed 2 mm.

[0042] Next, proceed to step three: based on the installation position of the parallel guide rail base, pre-position it for installation, measure the distance between the horizontal panel 120 and the outer plate of the hull after pre-positioning, and cut off any positions where the installation allowance of the bottom support 110 exceeds the tolerance based on the measurement results.

[0043] In one embodiment, before the pre-positioning of the parallel guide rail base, the deformation of the hull plate corresponding to the installation position of the parallel guide rail base is measured. Based on the measurement results, the deformed areas of the hull plate are corrected until the hull plate meets the shipbuilding standards. Correcting the deformed areas of the hull plate in advance can further reduce the number of locations where the installation allowance of the bottom support 110 exceeds tolerance when measuring the accuracy of the distance between the horizontal panel 120 and the hull plate, and further reduce the installation allowance and cutting amount of the bottom support 110.

[0044] Preferably, the pre-positioning step for installing the parallel guide rail base specifically includes proceeding sequentially from stern to bow or from bottom to top. For example, the parallel guide rail base supports the elevator's operation in both horizontal and vertical directions. When the elevator operates horizontally, the corresponding parallel guide rail base is pre-positioned from stern to bow; when the elevator operates vertically, the corresponding parallel guide rail base is pre-positioned from bottom to top.

[0045] Finally, proceed to step four, which involves connecting and installing the parallel guide rail base with the corresponding hull plate at the installation position. During connection, the parallel guide rail base is first pre-fixed with clamps, and then the bottom support 110 of the parallel guide rail base is welded and fixed to the hull plate. The specific welding sequence is from stern to bow or from bottom to top, and it is preferred to use the back welding method for symmetrical welding to control local deformation between the hull plate and the guide rail base during the welding process.

[0046] Because there are many fixing pads 130 on the parallel guide rail base, and the accuracy deviation of each fixing pad 130 may vary, the installation accuracy of the fixing pads 130 is re-measured after welding. If the re-measurement result shows deviations, the deviation value is recorded, and the fixing pad 130 at the corresponding position is replaced. To facilitate differentiation, the positions of each fixing pad 130 on the parallel guide rail base can be sequentially numbered to ensure that no errors occur during the replacement process. Based on the accuracy measurement results, qualified pads are directly welded and installed, while fixing pads 130 with deviations need to be processed again before being welded back to their original positions, and then measured again. If deviations still exist, the fixing pads 130 with deviations are ground until the installation requirements are met.

[0047] In one embodiment, the step of retesting the installation accuracy of the fixed pad 130 specifically includes measuring the flatness of each fixed pad 130 using a total station and an optical inclinometer, memorizing the parallelism of each fixed pad 130 with the first reference line, and maintaining a preset distance between the fixed pad 130 and the first reference line.

[0048] Preferably, the flatness of the fixing plate 130 should not exceed 0.5mm, the parallelism relative to the first reference line should not exceed 0.5mm, and the distance error between the fixing plate 130 and the first reference line should not exceed ±3mm.

[0049] This invention provides a method for installing a parallel guide rail base, comprising the following steps: First, providing guide rail base segments 110, each segment 110 including a bottom support 110, a horizontal panel 120, and a fixing pad 130 connected in sequence; then, creating an installation reference line and determining the installation position of the parallel guide rail base according to the installation reference line; next, pre-positioning the parallel guide rail base for installation, and confirming and addressing any positions where the installation allowance of the bottom support 110 exceeds the tolerance based on the distance between the horizontal panel 120 and the hull plate; finally, connecting and fixing the parallel guide rail base to the hull plate at the corresponding installation position, and repairing or replacing any fixing pads 130 with excessive installation accuracy. This invention controls the installation accuracy of the guide rail segments in advance, completes the installation and fixation of the parallel guide rail base, and then controls the installation accuracy of the fixing pad 130. Finally, by adjusting the fixing pad 130, the parallelism and flatness requirements of the parallel guide rail base can be met. This not only ensures the installation accuracy but also reduces the difficulty of on-site installation and the scrap rate, greatly saving the cost of personnel and materials.

[0050] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A method for installing a parallel guide rail base, characterized in that, include: Provides guide rail base segments, each of the guide rail base segments including a bottom support, a horizontal panel and a fixing pad connected in sequence, the bottom support being used to connect the horizontal panel to the hull body plate, and the fixing pad being disposed on the surface of the horizontal panel on the side away from the hull body plate; An installation mark plate is set in the installation area of ​​the parallel guide rail base, and the installation reference line determined by the installation mark plate is used as the installation reference to determine the installation position of each guide rail base segment on the hull plate. Multiple guide rail base segments together define the installation position of the parallel guide rail base. The parallel guide rail base is pre-positioned for installation, and the distance between the horizontal panel and the outer plate of the hull is measured after pre-positioning. Based on the measurement results, the positions where the installation allowance of the bottom support exceeds the tolerance are cut. The parallel guide rail base is connected and fixed to the hull plate at the corresponding installation position. The installation accuracy of the fixing pad is re-measured. If the re-measurement result is out of tolerance, the out-of-tolerance value is recorded, and the fixing pad at the corresponding position is replaced. The installation reference line includes a first reference line and a second reference line that are perpendicular to each other. The parallel guide rail base is arranged symmetrically about the second reference line, and the fixing pad is parallel to the first reference line and maintains a preset distance.

2. The parallel guide rail base installation method according to claim 1, characterized in that, Each of the guide rail base segments is numbered, and the parallel guide rail bases are sequentially connected, installed, and fixed according to the numbering order of the guide rail base segments.

3. The parallel guide rail base installation method according to claim 1 or 2, characterized in that, The dimensions of each of the guide rail base segments can be the same or different.

4. The parallel guide rail base installation method according to claim 1, characterized in that, The steps of pre-positioning the parallel guide rail base and subsequently docking and fixing it with the hull plate specifically include proceeding sequentially from stern to bow or from bottom to top.

5. The parallel guide rail base installation method according to claim 4, characterized in that, The parallel guide rail base supports the elevator's operation in both horizontal and vertical directions. When the elevator operates horizontally, the corresponding parallel guide rail base is pre-positioned, installed, and fixed from the stern to the bow. When the elevator operates vertically, the corresponding parallel guide rail base is pre-positioned, installed, and fixed from bottom to top.

6. The parallel guide rail base installation method according to claim 1, characterized in that, Before the step of pre-positioning the parallel guide rail base, the method further includes measuring the deformation of the hull plate corresponding to the installation position of the parallel guide rail base, and correcting the deformation area until the hull construction standards are met.

7. The parallel guide rail base installation method according to claim 1, characterized in that, The step of determining the installation position of the parallel guide rail base specifically includes using a total station and an auxiliary steel wire pulling method to determine two installation center lines of the parallel guide rail base, and the two installation center lines relative to the second reference line must meet a preset symmetry threshold range.

8. The parallel guide rail base installation method according to claim 1, characterized in that, The step of retesting the installation accuracy of the fixed pads specifically includes using a total station and an optical inclinometer to measure the flatness of each fixed pad and the parallelism of each fixed pad with the first reference line.

9. The parallel guide rail base installation method according to claim 1, characterized in that, The bottom support web and multiple elbow plates are connected by cross welding in a "+" shape.

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