Large low-speed marine diesel engine rack single-piece split preassembling platform tool

Abstract

The utility model relates to a single-piece split preassembling platform tool for a diesel engine rack for a large low-speed ship, which is provided with a steel plate working table and is characterized in that a baffle plate is vertically and upwards arranged on one side of the upper surface of the steel plate working table, a row of vertically and upwards positioning pins are arranged on the edge adjacent to the side of the upper surface of the steel plate working table, and vertically and upwards adjusting support pins are further distributed on the upper surface of the steel plate working table. The position of the guide sliding plate is fixed through the baffle and the positioning pin, then the connecting plate is installed, the position of the triangular plate is determined through the adjustable supporting pins of different specifications, and therefore the assembling precision of split preassembling of the rack single piece is guaranteed.

Description

Technical Field

[0001] The utility model relates to a large-scale low-speed marine diesel engine frame monolithic split pre-installation platform tooling. The invented tooling can pre-install the large-scale low-speed marine diesel engine frame monolithic split. Background Art

[0002] In order to facilitate the welding of the robot arm, the single piece of the large low-speed marine diesel engine frame can adopt the split pre-installation process method, that is, the guide plate, triangle plate, and connecting plate are first assembled on the platform and then removed from the platform for welding. However, the single piece size of the main frame of different models is different. Each time, it is necessary to re-make the ground sample on the platform, install the ground sample jig, and cut off the last installed ground sample jig, resulting in a long platform occupancy period during assembly. In order to improve production efficiency and relieve platform pressure, the steel structure manufacturing department decided to develop a platform tooling to solve the problem of long occupancy period of the existing assembly platform and the need to repeatedly make the ground sample and repeatedly assemble the ground sample jig on the platform. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a single-piece split preinstallation platform tooling for a large low-speed marine diesel engine frame which has a simple structure and is easy to operate. One tooling is suitable for the single-piece split preinstallation of frames of various types of large low-speed marine diesel engines.

[0004] The technical solution of the present invention is: a large-scale low-speed marine diesel engine frame monolithic split pre-installed platform tooling is provided with a steel plate workbench, which is characterized in that a baffle is vertically arranged on one side of the steel plate workbench, a row of vertically arranged positioning pins are arranged on the adjacent edge of the steel plate workbench, and vertically arranged upward adjustment support pins are also distributed on the steel plate workbench (see Figure 1 ). The position of the guide plate is fixed by the baffle and the positioning pin, and then the connecting plate is installed, and then the position of the triangle plate is determined by support pins of different specifications, so as to ensure the assembly accuracy of the single-piece split pre-installation of the frame. Further measures of the present invention: pin holes are also distributed on the steel plate workbench, and the lower end of the adjusting support pin is inserted into the pin hole on the steel plate workbench for positioning connection. The upper section of the adjusting support pin is provided with an adjusting screw connected with a thread. A row of pin holes corresponding to the positioning pins are arranged on the steel plate workbench, and the lower end of the positioning pin is inserted into the pin hole on the steel plate workbench for positioning connection. A row of pin holes corresponding to the positioning pins are arranged on the steel plate workbench, and the lower end of the positioning pin is inserted into the pin hole on the steel plate workbench for positioning connection.

[0005] The large-scale low-speed marine diesel engine frame monolithic split pre-installed platform tooling of the present invention solves the following problems:

[0006] 1. When assembling the single-piece split frame of a large low-speed marine diesel engine, the process of repeatedly making ground samples on the platform and installing ground sample jigs is reduced, which effectively improves production efficiency and reduces construction costs.

[0007] 2. Solve the problem of large low-speed marine diesel engine frame single-piece split assembly occupying the platform for too long.

[0008] 3. This tooling can replace the platform to directly pre-install the single-piece split of the large low-speed marine diesel engine frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A three-dimensional schematic diagram of a large low-speed marine diesel engine frame monolithic split pre-installation platform tooling of the present invention.

[0010] Figure 2 A three-dimensional schematic diagram of the large-scale low-speed marine diesel engine frame monolithic split pre-installation platform tooling for the frame monolithic split pre-installation utilizing the tooling for assembling the frame monolithic split pre-installation. DETAILED DESCRIPTION

[0011] The following further describes the design, manufacturing and assembly process of the large-scale low-speed marine diesel engine frame monolithic split pre-installed platform tooling of the present invention in conjunction with the accompanying drawings.

[0012] This large-scale low-speed marine diesel engine frame single-piece split pre-installation platform tooling as shown in the attached figure is suitable for the single-piece split pre-installation of various types of large-scale low-speed marine diesel engine frames. This tooling design installs a baffle on one side (also called the front side or the horizontal side) of a steel plate workbench, and a total of six rows of pins are arranged in a vertical row on the workbench; among them, one side is provided with a row of six positioning pins, and three rows (six in each row) are provided for eighteen adjustable support pins. In this way, this tooling design installs a baffle (2), six positioning pins (3), and 18 adjustable support pins (4) on the steel plate workbench (1), fixes the position of the guide plate by the baffle and the positioning pins, and then installs the connecting plate, and then determines the position of the triangle plate by adjustable support pins of different specifications, thereby ensuring the assembly accuracy of the single-piece split pre-installation of the frame.

[0013] Design and manufacture of tooling

[0014] According to the guide slides, triangle plates and related dimensions of the single-piece frame of each series of machine models under construction, the size of the single-piece split pre-installation platform tooling of the frame is determined, and its size is designed to be the same as the single-piece split pre-installation size of the largest frame; according to the size of each series of single-piece split pre-installation of the frame, adjustable support pins of different heights are selected to adjust the installation height of the triangle plate to ensure that it is suitable for all series of host machines under on-site construction.

[0015] Material selection: Grade B board.

[0016] Assembly process

[0017] 1. Place the rack single-piece split pre-installed platform tooling on the ground and level it.

[0018] 2. Use the lifting lugs on the steel plate workbench to place the rack single-piece split pre-installed platform tooling to the designated position.

[0019] 3. Prepare the corresponding adjustable support pins according to the host model that needs to be pre-installed.

[0020] 4. Use tooling for split pre-installation

[0021] 1) Place the bottom of the guide slide of the frame single-piece part directly against the baffle (1), and at the same time, place the slide surface of the guide slide close to the positioning pin (3);

[0022] 2) Install the frame single-piece parts connecting plate, align it directly with the lower leg of the guide plate, and fix them together with spot welding;

[0023] 3) Assemble the single-piece triangle plate of the frame, place it directly on the adjustable support pin, adjust the position so that it is in full contact with the guide plate and the connecting plate, and then weld it;

[0024] 4) Check all part dimensions against the drawings.

[0025] 5. Welding shall be carried out after passing the inspection.

[0026] This large-scale low-speed marine diesel engine frame single-piece split pre-installed platform tooling is easy to use and convenient for welding with a welding robot arm. The use of this tooling can improve production efficiency, ensure assembly accuracy, save space and replace platform assembly, eliminating the need to make ground samples on the platform and install jigs when assembling single-piece split frames with different cylinder diameters.

Claims

1. A large-scale low-speed marine diesel engine frame single-piece split pre-installed platform tooling, equipped with a steel plate workbench, characterized in that: A baffle is vertically arranged on one side of the steel plate workbench, a row of vertically arranged positioning pins is arranged on the adjacent edge of the steel plate workbench, and vertically arranged adjusting support pins are also distributed on the steel plate workbench.

2. The large low-speed marine diesel engine frame monolithic split pre-installed platform tooling as claimed in claim 1, characterized in that: Pin holes are also distributed on the steel plate workbench, and the lower ends of the adjusting support pins are inserted into the pin holes on the steel plate workbench for positioning and connection.

3. The large low-speed marine diesel engine frame monolithic split pre-installed platform tooling as claimed in claim 1 or 2, characterized in that: The upper section of the adjusting support pin is provided with an adjusting screw rod which is thread-matched and connected.

4. The large low-speed marine diesel engine frame monolithic split pre-installation platform tooling as claimed in claim 1 or 2, characterized in that: A row of pin holes corresponding to the positioning pins are arranged on the steel plate workbench, and the lower ends of the positioning pins are inserted into the pin holes on the steel plate workbench for positioning connection.

5. The large low-speed marine diesel engine frame monolithic split pre-installation platform tooling as claimed in claim 3, characterized in that: A row of pin holes corresponding to the positioning pins are arranged on the steel plate workbench, and the lower ends of the positioning pins are inserted into the pin holes on the steel plate workbench for positioning connection.

6. The large low-speed marine diesel engine frame monolithic split pre-installation platform tooling as claimed in claim 1, characterized in that: According to the guide slides, triangle plates and related dimensions of the single-piece frame of each series of machine models under construction, the size and specifications of the single-piece pre-installation platform tooling of the frame are determined according to the single-piece pre-installation size of the frame with the largest size specification.

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