A method of assembly within a confined cabinet product

Abstract

The application provides an assembling method in narrow box product, smearing lubricant on the inside sliding surface of the guide rail, sliding the simulation bomb into the guide rail assembly; fastening the guide rail assembly and the bomb body; inverting the box on the assembling platform, installing the auxiliary tooling in the side plate of the box; installing the traction rope in the position of the bomb wing, pushing the assembled simulation bomb and the guide rail into the box in the way of pulling in front and pushing in back, taking out the tooling from the connecting block hole position, then inverting the box on the supporting tooling; testing the assembly of the guide rail and the top plate through the screwing from the lower side of the box, detecting the technical parameters of the guide rail, adjusting the technical parameters of the guide rail through the via hole on the box and the copper pad to meet the design requirements; fastening the box and the guide rail through the bolt and setting the positioning pin; checking the locking mechanism to ensure the locking state. The application reduces the operation difficulty and the labor intensity of the personnel in the narrow space assembling, and solves the problem of the guide rail assembling in the narrow space.

Description

Technical Field

[0001] This invention relates to a storage and launch container, and more particularly to an assembly method for the storage and launch container. Background Technology

[0002] The guide rail assembly is the core component of the storage and launch container. The assembly of the guide rail assembly in a confined space is a challenge and a key point in product design because it relates to the assembly accuracy and usage requirements of the product. If the accuracy does not meet the requirements, it will affect the launch and ultimately the entire project.

[0003] The existing model has a large external structure, and the internal dimensions of the box can accommodate assembly workers to carry out normal work. However, the new model has a small and long cavity, making it impossible for people to enter the cavity to work. Most of the work needs to be completed on the assembly platform outside the box. Then, the assembled parts are put into the box using tooling and screwed in from the outside. The new requirements have brought great difficulties to the assembly of the guide rail assembly.

[0004] Due to its high installation requirements, complex installation environment, and confined assembly space, the precision of the guide rails is difficult to guarantee, which can easily lead to assembly errors. Assembling the components to be installed inside the box on the assembly platform before installing them into the box solves the problem of limited space for assembly, but it cannot guarantee that all components can be assembled in place. During the assembly process, issues such as components falling off, mounting holes shifting, and parts misaligning may occur.

[0005] Using conventional assembly methods can easily cause the reference datum to tilt, resulting in accuracy errors in the guide rail. In actual operation, this leads to a high rate of rework and low assembly efficiency.

[0006] Ensuring precision is a challenge in the production and assembly process, thus requiring improvements in process technology. The aim is to coordinate the precise assembly of guide rail components within confined spaces, thereby improving assembly efficiency, reducing assembly difficulty, and ensuring that all performance indicators ultimately meet assembly requirements. Summary of the Invention

[0007] To overcome the shortcomings of the prior art, the present invention provides an assembly method for products with small enclosures, which can coordinate the precise assembly of guide rail components in a small space, improve assembly efficiency, and reduce assembly difficulty.

[0008] The technical solution adopted by this invention to solve its technical problem includes the following steps:

[0009] 1) Assemble the guide rail, slider, and locking mechanism to form a guide rail assembly;

[0010] 2) Apply lubricant to the inner sliding surface of the guide rail, slide the simulated projectile into the guide rail assembly; and secure the guide rail assembly to the projectile body.

[0011] 3) Invert the box onto the assembly platform so that the guide rail assembly is located at the bottom of the box; install the auxiliary tooling in the side panel of the box;

[0012] 4) Install traction ropes at the wing position, and push the assembled simulated missile and guide rail into the box along the axial direction of the box by pulling forward and pushing backward. After pushing to the position, remove the auxiliary tooling from the opening position of the connecting block, and then invert the box onto the support tooling.

[0013] 5) Perform a trial assembly by screwing the guide rails to the top plate from the bottom of the enclosure, check the technical parameters of the guide rails, and adjust the technical parameters of the guide rails to meet the design requirements by using the through holes on the enclosure and copper pads.

[0014] 6) Secure the housing to the guide rail with bolts and install locating pins;

[0015] 7) Check the locking mechanism to ensure it is in the locked position.

[0016] The guide rails are all manufactured in sections, and the sections are connected to each other to form a whole through reserved interlocking interfaces.

[0017] The axial side plates of the box body are composed of alternating T6 aluminum plates and connecting blocks screwed together. The connecting blocks have at least one opening that can accommodate auxiliary tooling.

[0018] The auxiliary tooling includes a connecting rod, bearings, and limiting blocks. Limiting blocks are provided at both ends of the connecting rod, and the connecting rod is installed in the through holes of the connecting block through the limiting blocks. Several bearings are coaxially installed in the middle of the connecting rod, and the outer diameter of the bearings is larger than the thickness of the connecting block. The connecting rod is installed perpendicular to the axial direction of the box body in the opening of the side plate of the box body.

[0019] The outer diameter of the bearing is 0.4 mm larger than the thickness of the connecting block.

[0020] The sliding surface of the guide rail that contacts the slider is coated with Teflon paint.

[0021] Taking the above considerations into account, the assembly method of the present invention adopts the following scheme:

[0022] The beneficial effects of this invention are: it reduces the difficulty of assembly in confined spaces, reduces the labor intensity of personnel, and solves the problem of difficult guide rail assembly in confined spaces. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the basic components of a storage and transportation device;

[0024] Figure 2 This is a schematic diagram of the basic components of a guide rail assembly;

[0025] Figure 3 This is a schematic diagram of the auxiliary tooling structure;

[0026] Figure 4 This is a schematic diagram showing the usage status of auxiliary tooling;

[0027] In the diagram, 1-locking mechanism, 2-reinforcing rib, 3-gas cylinder body, 4-guide rail body, 5-auxiliary guide rail. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments. The present invention includes, but is not limited to, the following embodiments.

[0029] A certain storage and transportation device mainly consists of a box, guide rail assemblies inside the box, and simulated missiles. This type of box is elongated and narrow, making it impossible to enter for operation. Its structure is as follows: Figure 1 As shown. The device provided by this invention is used for the installation and leveling of the guide rail assembly inside the box, solving the practical problem of difficult assembly in confined spaces.

[0030] The guide rail assembly mainly consists of auxiliary guide rails, guide rail body, gas cylinder, reinforcing ribs, locking mechanism, etc., see Figure 2 .

[0031] The functions of the above parts are as follows:

[0032] Housing: Its basic function is to provide connection, support and protection for the guide rail assembly, and to bear and transmit certain forces.

[0033] The function of the guide rail assembly is to provide support and gliding for the simulated projectile, and it requires high precision.

[0034] The function of the locking mechanism in the guide rail assembly: The locking mechanism provides two states for the slider: locked and unlocked, and is a key part of the storage and transportation device.

[0035] The assembly scheme of the present invention is as follows:

[0036] 1. Pre-installation preparation

[0037] a) Seal the bolts and locating pins that pass through the box body by filling them with sealant;

[0038] b) All bolt threads used on the guide rails are coated with thread-locking agent;

[0039] c) Assemble all parts and standard components according to the drawings;

[0040] d) Clean the assembly platform (1500mm×9000mm) thoroughly. All assembly work shall be carried out on the assembly platform.

[0041] e) Clean the inside of the box to remove any residual oil stains, metal shavings, etc., and ensure the box is clean.

[0042] 2. Process Scheme

[0043] 1) Composition of each part

[0044] Guide rails: Since both left and right guide rails are processed in sections, the sections are first connected to each other to form a whole through a reserved interlocking splicing method;

[0045] Locking mechanism: According to the technical requirements and drawings, the locking mechanism should be installed to ensure reliable locking and smooth sliding, without any jamming.

[0046] Guide rail trolley assembly: Assemble the guide rail trolley assembly according to technical requirements, ensuring that the trolley slides smoothly without jamming.

[0047] Auxiliary tooling: Auxiliary tooling such as Figure 3 As shown, it consists of a connecting rod, a bearing, and limit blocks at both ends. When in use, it is placed in the space between the connecting blocks (the left and right side plates of the box are made of T6 aluminum plates and connecting blocks screwed together). Since the bearing is 0.2mm higher than the connecting block, the guide rail can slide on the bearing, making it easier to install the guide rail assembly and other parts into the box.

[0048] 2) Assembly process

[0049] Due to the extremely cramped space inside the container, the connection between the guide rail and the simulated missile could not be performed within the container. Based on the study of the drawings and analysis of existing assembly technology, the following solution was developed:

[0050] a) Assemble all components on the assembly platform as required, and then assemble all the components to be installed in the box according to the requirements;

[0051] b) Use auxiliary means to fix the guide rails and other components;

[0052] c) Use auxiliary tooling (such as...) Figure 3 , Figure 4 (As shown) and, together with a crane, load the pre-assembled guide rails and other components into the box;

[0053] d) Remove the auxiliary fixtures and tooling;

[0054] e) Screw-fitting guide rails and other components;

[0055] f) Conduct a passability test using a simulated missile to verify the passability of the guide rail.

[0056] 3) Accuracy Guarantee

[0057] The above-mentioned method of assembling the components to be installed inside the box on the assembly platform and then installing them into the box solves the problem of the limited space inside the box for assembly, but it raises the question of how to ensure accuracy. This invention ensures accuracy in the following aspects:

[0058] a) First, test-assemble the guide rail with the housing frame. After all relevant parameters meet the requirements, install the guide rail with mounting holes. After the guide rail is installed on the frame, conduct sliding, installation positioning, and removal tests on the simulated projectile. The simulated projectile should slide smoothly on the guide rail without jamming.

[0059] b) After trial assembly, remove the guide rail and test assemble the guide rail with the locking mechanism, gas cylinder support, etc. on the assembly platform to ensure that it meets the accuracy requirements before connecting with bolts and pins.

[0060] c) Attach wool felt to the inside of the guide rail body at the outlet end of the cylinder to limit the inner side of the guide rail and the cylinder.

[0061] d) After assembling the guide rail assembly and other parts that need to be assembled in advance on the platform, measure the parameters. Once the requirements are met, install process pins at the relevant positions at the front, middle and rear of the guide rail to ensure the accuracy of the relevant dimensions.

[0062] e) After spraying Teflon coating on the sliding surface where the guide rail and slider contact, proceed to the next step according to the relevant contents of the above assembly process.

[0063] Taking the above considerations into account, the assembly method of the present invention adopts the following scheme:

[0064] 1) On the assembly platform, arrange the assembled guide rails, locking mechanisms, trolley components, reinforcing ribs, reinforcing plates, pins, cylinders, etc., according to requirements. Figure 2 The assembly shown is a guide rail assembly (the locking mechanism is connected to the guide rail with bolts and pins; the reinforcing ribs and steel plates are connected to the guide rail with bolts).

[0065] 2) Apply lubricant to the inner sliding surface of the guide rail (to reduce the coefficient of friction and improve wear resistance), use the overhead crane and auxiliary tooling to slide the simulated missile into the guide rail assembly, and lock the slider of the simulated missile with the locking mechanism;

[0066] 3) Then use tooling to fasten the guide rail assembly to the projectile (avoiding interference positions) to ensure that the projectile and guide rail are securely fastened and will not slide relative to each other when pushed into the box;

[0067] 4) Place the housing upside down on the assembly platform, and place the auxiliary tooling (four bearings assembled together as a set, three sets in total) into the gap of the connecting block. The auxiliary guide rail slides as the pusher rail and the simulated projectile enter the housing;

[0068] 5) Using the auxiliary traction rope at the wing position, slowly push the assembled simulated missile and guide rail into the box by pulling forward and pushing backward. After pushing it into position, remove the auxiliary fixture from the opening of the connecting block, and then place the box on the support fixture;

[0069] 6) Screw the guide rails to the top plate from the bottom of the enclosure for trial assembly. After screwing two bolts at the front, back and center, measure the symmetry and other technical parameters of the guide rails. Adjust the parameters to meet the design requirements by using the through holes on the enclosure and copper shims.

[0070] 7) After all technical specifications are met, use bolts to fasten the housing to the guide rail and install locating pins;

[0071] 8) Check the locking mechanism to ensure it is in the locked state.

Claims

1. An assembly method for a product with a small box-shaped body, characterized in that, Includes the following steps: 1) Assemble the guide rail, slider, and locking mechanism to form a guide rail assembly; 2) Apply lubricant to the inner sliding surface of the guide rail, slide the simulated projectile into the guide rail assembly; and secure the guide rail assembly to the projectile body. 3) Invert the box onto the assembly platform so that the guide rail assembly is located at the bottom of the box; install the auxiliary tooling in the side panel of the box; 4) Install traction ropes at the wing position, and push the assembled simulated missile and guide rail into the box along the axial direction of the box by pulling forward and pushing backward. After pushing to the position, remove the auxiliary tooling from the opening position of the connecting block, and then invert the box onto the support tooling. The axial side plates of the box body are composed of alternating T6 aluminum plates and connecting blocks screwed together. The connecting blocks have at least one opening that can accommodate auxiliary tooling. The auxiliary tooling includes a connecting rod, bearings, and limiting blocks. Limiting blocks are respectively provided at both ends of the connecting rod, and the connecting rod is installed in the through holes of the connecting block through the limiting blocks. Several bearings are coaxially installed in the middle of the connecting rod, and the outer diameter of the bearings is larger than the thickness of the connecting block. The connecting rod is installed perpendicular to the axial direction of the box body in the opening of the side plate of the box body. 5) Perform a trial assembly by screwing the guide rails to the top plate from the bottom of the enclosure, check the technical parameters of the guide rails, and adjust the technical parameters of the guide rails to meet the design requirements by using the through holes on the enclosure and copper pads. 6) Secure the housing to the guide rail with bolts and install locating pins; 7) Check the locking mechanism to ensure it is in the locked position.

2. The assembly method within a small box-shaped product according to claim 1, characterized in that, The guide rails are all manufactured in sections, and the sections are connected to each other to form a whole through reserved interlocking interfaces.

3. The assembly method within a small box-shaped product according to claim 1, characterized in that, The outer diameter of the bearing is 0.4 mm larger than the thickness of the connecting block.

4. The assembly method within a small box-shaped product according to claim 1, characterized in that, The sliding surface of the guide rail that contacts the slider is coated with Teflon paint.

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