Multi-purpose lifting tool for control box of methanol main engine blower of large ship

Abstract

The present application belongs to the technical field of hoisting tooling, and particularly relates to a multipurpose hoisting tooling for a methanol main engine blower control box of a large ship. The present application comprises: a chassis part tooling assembly, which is provided with an anti-toppling support device at the bottom; a longitudinal support part tooling assembly, which is welded with a rear support tooling assembly at the back and a front support at the front, and is provided with a longitudinal long-hole at the longitudinal support; a blower control box hoisting support, which is connected to the upper part of the longitudinal support part tooling assembly and is provided with lifting lugs to realize multi-point hoisting; a bottom support welded to the front end of the chassis assembly; the bottom support, the longitudinal support and the blower control box hoisting support form a center-of-gravity forward-leaning structure; and the vertical installation, mobile transportation and anti-toppling functions of the blower control box are realized. The present application can be operated by a single person to hoist the control box, thereby reducing labor cost and safety risk, and is stable, reliable and good in versatility.

Description

Technical Field

[0001] This invention belongs to the field of hoisting tooling technology, specifically relating to a multi-purpose hoisting tooling for the control box of a large marine methanol main engine blower. Background Technology

[0002] Traditional methods have significant drawbacks in the transportation and installation of large marine methanol main engine blower control boxes. Transporting the blower control box from the finished product warehouse to the bottom of the test bench relies on manual labor using flatbed trucks, while transporting it from the top of the test bench requires multiple people working together, resulting in low efficiency and significant safety hazards.

[0003] Existing lifting fixtures for large marine methanol main engine blower control boxes rely primarily on direct crane lifting, lacking specialized tooling and resulting in insufficient lifting accuracy and susceptibility to equipment damage. Furthermore, placing the control box flat on the ground occupies space, hinders the movement of other equipment, and fails to meet the layout requirements of the technical center's emissions testing. Previous attempts at fixed mounting brackets have been hampered by complex assembly and disassembly, heavy weight (up to 80kg per box), requiring multiple operators, high construction difficulty, and high costs. Existing tooling lacks mobility, anti-tipping capabilities, and compatibility with multiple machine models, making vertical installation and stable transportation of the control box impossible. These problems severely restrict production efficiency and safety, necessitating a specialized tooling that integrates transportation, lifting, anti-tipping, and multi-purpose compatibility functions to solve these issues. Summary of the Invention

[0004] This invention addresses the problems of insufficient lifting precision, the need for multiple operators, poor safety, inability to achieve vertical installation and stable transportation of the control box, and poor adaptability of existing large marine methanol main engine blower control boxes. The invention proposes a multi-purpose lifting fixture for large marine methanol main engine blower control boxes, comprising: a chassis assembly with bolted casters equipped with brakes and an anti-tipping support device at the bottom; and a longitudinal support assembly vertically welded to the chassis assembly, with a rear support assembly welded to its back. The front part is welded with a front support, and the longitudinal support of the longitudinal bracket of the tooling assembly has longitudinal elongated holes adapted to different models; the blower control box hoisting bracket is connected to the upper part of the longitudinal bracket tooling assembly by adjustable bolts and is equipped with lifting lugs to achieve multi-point hoisting; the bottom support is welded to the front end of the chassis assembly; the bottom support, the longitudinal bracket and the blower control box hoisting bracket form a forward tilting structure; the lower part of the tooling has reserved wiring space, and the whole is connected by a combination of welding and bolts to realize the vertical installation, mobile transportation and anti-tipping function of the blower control box.

[0005] According to the above-described multi-purpose hoisting fixture for the control box of a large marine methanol main engine blower, the longitudinal support part of the fixture assembly and the front support are both equipped with hoisting lugs, and the distribution of the lugs meets the requirements for three-point to five-point hoisting; there are 4 casters; there are 6 anti-tipping support devices; the total height of the fixture is 1500-2000mm, the wiring space is 300-500mm, and there are 8-15 hoisting lugs.

[0006] According to the multi-purpose hoisting fixture for the large marine methanol main engine blower control box described above, the tilt angle between the blower control box hoisting bracket with the forward tilting center of gravity and the vertical horizontal plane is 3°-8°; the width of the elongated slot of the longitudinal bracket of the fixture assembly is 10-30mm, and the length is adjustable from 500-800mm, which is suitable for various blower control box installation sizes.

[0007] According to the multi-purpose hoisting fixture for the control box of the large marine methanol main engine blower described above, the anti-tipping support device is a threaded rod structure, and the support height can be adjusted by rotation, with a maximum adjustment stroke of 100mm.

[0008] According to the above-described multi-purpose hoisting fixture for the control box of the large marine methanol main engine blower, the casters are 4-inch polyurethane silent wheels with a single load capacity of 120kg, and the bracket adopts double ball bearings and is treated with anti-corrosion coating.

[0009] According to the above-described multi-purpose hoisting fixture for the control box of a large marine methanol main engine blower, a 3-8mm thick steel plate is provided for the transition connection between the hoisting bracket of the blower control box and the longitudinal support part of the fixture assembly. The edges of the steel plate are chamfered to avoid stress concentration.

[0010] According to the multi-purpose hoisting fixture for the control box of the large marine methanol main engine blower described above, the rear support fixture assembly is a triangular truss structure, which is welded to the back of the longitudinal support fixture assembly to enhance the overall torsional rigidity.

[0011] According to the above-described multi-purpose hoisting fixture for the control box of the large marine methanol main engine blower, the front support and the chassis part of the fixture assembly are provided with reinforcing ribs, the thickness of which is 5-15mm and the welding length is 150-200mm.

[0012] The multi-purpose hoisting fixture for the control box of the large marine methanol main engine blower described above is coated with epoxy zinc-rich primer and polyurethane topcoat, with a total coating thickness of ≥120μm, which meets the anti-corrosion requirements of the marine environment.

[0013] According to the multi-purpose hoisting tooling for the control box of the large marine methanol main engine blower described above, the lifting lug is made of forged alloy steel with a rated load of 500kg, and is fixed to the support node by double-sided full welding.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. This invention, by equipping the tooling with braked casters, allows the tooling to move freely and stop stably, solving the problem of long-distance transportation, and enabling a single person to complete the operation.

[0016] 2. The blower control box hoisting bracket and lifting lug design of the present invention support multi-point hoisting and adapt to different models. The elongated hole structure of the longitudinal bracket of the tooling assembly improves the tooling versatility.

[0017] 3. The bottom support of this invention is welded to the front end of the chassis assembly, forming a forward tilting structure and an anti-tipping device together with the longitudinal support, ensuring that the tooling operates stably under load and avoiding the risk of tipping.

[0018] 4. The wiring space at the bottom of the chassis tooling assembly of this invention simplifies the equipment installation and electrical connection process, reducing construction time. The tooling assembly adopts modular welding and bolt connection, resulting in high structural strength and ease of maintenance.

[0019] This invention significantly improves the transportation and installation efficiency of blower control boxes. In practical applications, the tooling can replace traditional manual handling and direct crane lifting, reducing labor costs and safety risks. It also adapts to various test bench layout requirements, resulting in overall manufacturing cost savings of over 30% and a 50% increase in construction efficiency. Attached Figure Description

[0020] Figure 1 This is a perspective view of the structural schematic diagram of the multi-purpose hoisting tool for the control box of the large marine methanol main engine blower of the present invention.

[0021] Figure 2 This is a front view of the structural schematic diagram of the multi-purpose hoisting tool for the control box of the large marine methanol main engine blower of the present invention.

[0022] Figure 3 This is a rear view of the structural schematic diagram of the multi-purpose hoisting tool for the control box of the large marine methanol main engine blower of the present invention.

[0023] Figure 4 This is a right view of the structural schematic diagram of the multi-purpose hoisting tool for the control box of the large marine methanol main engine blower of the present invention.

[0024] Figure 5 This is a diagram showing the working state of the large marine methanol main engine blower control box after the multi-purpose hoisting tool is placed on the control box.

[0025] In the diagram: 1- Chassis tooling assembly, 2- Longitudinal support tooling assembly, 3- Rear support tooling assembly, 4- Front support, 5- Bottom support, 6- Blower control box hoisting bracket, 7- Casters, 8- Control box. Detailed Implementation

[0026] Preferred Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] like Figures 1 to 4 As shown: A multi-purpose hoisting fixture for the control box of a large marine methanol main engine blower includes: a chassis fixture assembly 1, which is bolted with casters 7 equipped with brakes and has an anti-tipping support device at the bottom; a longitudinal support fixture assembly 2, which is vertically welded to the chassis fixture assembly 1, with a rear support fixture assembly 3 welded to its back and a front support 4 welded to its front, and longitudinal elongated holes adapted to different models are opened on the longitudinal support of the longitudinal support fixture assembly 2; a blower control box hoisting bracket 6, which is connected to the upper part of the longitudinal support fixture assembly 2 by adjustable bolts and is equipped with lifting lugs for multi-point hoisting; a bottom support 5 welded to the front end of the chassis assembly 1; the bottom support 5, the longitudinal support 2, and the blower control box hoisting bracket 6 form a forward-leaning structure; the lower part of the fixture has reserved wiring space, and the whole is connected by a combination of welding and bolts to realize the vertical installation, mobile transportation, and anti-tipping functions of the blower control box.

[0029] Both the longitudinal support assembly 2 and the front support 4 are equipped with lifting lugs, and the distribution of the lugs meets the requirements for three-point to five-point lifting; there are 4 casters 7; there are 6 anti-tipping support devices; the total height of the tooling is 1500-2000mm, the wiring space is 300-500mm high, and there are 8-15 lifting lugs.

[0030] The tilt angle between the forward-leaning blower control box hoisting bracket 6 and the vertical horizontal plane is 3°-8°; the longitudinal bracket of the longitudinal bracket part tooling assembly 2 has a long slot width of 10-30mm and an adjustable length range of 500-800mm, which is suitable for various blower control box installation sizes.

[0031] The anti-tipping support device is a threaded rod structure, and the support height can be adjusted by rotation, with a maximum adjustment stroke of 100mm.

[0032] The casters are 4-inch polyurethane silent wheels, each with a load capacity of 120kg. The bracket uses double ball bearings and is treated with an anti-corrosion coating.

[0033] A 3-8mm thick steel plate is provided for the transition connection between the blower control box hoisting bracket 6 and the longitudinal support tooling assembly 2. The edges of the steel plate are chamfered to avoid stress concentration.

[0034] The rear support tooling assembly 3 is a triangular truss structure, welded to the back of the longitudinal support tooling assembly 2 to enhance the overall torsional rigidity.

[0035] The front support 4 is connected to the chassis tooling assembly 1 with a reinforcing rib plate. The rib plate is 5-15mm thick and the welding length is 150-200mm.

[0036] The tooling surface is coated with epoxy zinc-rich primer and polyurethane topcoat, with a total coating thickness of ≥120μm, meeting the corrosion protection requirements of the marine environment.

[0037] The lifting lugs are made of forged alloy steel with a rated load of 500kg, and are fixed to the support nodes by double-sided full welding.

[0038] like Figures 1 to 5 As shown, the multi-purpose hoisting fixture for the large marine methanol main engine blower control box in this embodiment includes: a chassis fixture assembly 1, a longitudinal support fixture assembly 2, a rear support fixture assembly 3, a front support 4, a bottom support 5, a blower control box hoisting bracket 6, and casters 7. The chassis fixture assembly 1 uses a welded channel steel frame with dimensions of 2356mm × 789mm. Four-inch casters 7 with brakes are fixed at the four corners with M16 bolts. The caster brackets of the casters 7 are lined with double ball bearings to ensure smooth movement. The longitudinal support fixture assembly 2 is an H-beam, vertically welded to the rear end of the chassis fixture assembly 1. A triangular rear support fixture assembly 3 is welded to its back, and the front is welded to the front support 4 via a 5° inclined steel plate, forming a forward-leaning structure. The longitudinal support surface of the longitudinal support assembly 2 has adjustable-spaced elongated holes, 20mm wide, for fixing blower control boxes of different sizes.

[0039] The blower control box hoisting bracket 6 is an L-shaped steel plate, bolted to the top of the longitudinal support of the longitudinal support assembly 2. Eleven lifting lugs are evenly distributed along its edge, forged from 35CrMo alloy steel, with a rated load of 500kg, supporting three-point to five-point hoisting modes. The bottom support 5 is welded to the front end of the chassis assembly 1, forming a stable support structure together with the longitudinal support assembly 2. Six sets of threaded rod anti-tipping devices are installed below the chassis assembly 1. The support height can be adjusted by rotation, with a maximum stroke of 100mm. The casters 7 can be locked under load to prevent the tooling from sliding or tipping.

[0040] The tooling surface is coated with an 80μm epoxy zinc-rich primer and a 40μm polyurethane topcoat, with a total thickness ≥120μm, suitable for the high humidity environment of ships. During installation, the blower control box is hoisted onto the blower control box hoisting bracket 6, secured with bolts through the elongated holes, and the anti-tipping device is adjusted to contact the ground. Deactivating the brakes on the casters 7 ensures stable transport. When installing on top of the test bench, the tooling is hoisted to the designated position using the lifting lugs. After removing the bottom bolts, the blower control box remains upright, with a 400mm space underneath for easy electrical wiring. This implementation method integrates transportation, hoisting, installation, and anti-tipping functions, significantly improving construction efficiency and safety.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-purpose hoisting fixture for the control box of a large marine methanol main engine blower, characterized in that, include: The chassis tooling assembly (1) is bolted with casters (7) with brake function and has an anti-tipping support device at the bottom; The longitudinal support tooling assembly (2) is vertically welded to the chassis tooling assembly (1). The rear support tooling assembly (3) is welded to its back, and the front support (4) is welded to its front. The longitudinal support of the longitudinal support tooling assembly (2) is provided with longitudinal elongated holes adapted to different models. The blower control box hoisting bracket (6) is connected to the upper part of the longitudinal support tooling assembly (2) by adjustable bolts and is equipped with lifting lugs to achieve multi-point hoisting. The bottom support (5) is welded to the front end of the chassis tooling assembly (1). The bottom support (5), the longitudinal support part tooling assembly (2), and the blower control box hoisting bracket (6) form a forward tilting structure; the lower part of the tooling has reserved wiring space, and the whole is connected by welding and bolts to realize the vertical installation, mobile transportation and anti-tipping functions of the blower control box.

2. The multi-purpose hoisting fixture for the control box of a large marine methanol main engine blower according to claim 1, characterized in that: The longitudinal support assembly (2) and the front support (4) are both equipped with lifting lugs, and the distribution of the lugs meets the requirements for three-point to five-point lifting; there are 4 casters (7); there are 6 anti-tipping support devices; the total height of the tooling is 1500-2000mm, the wiring space is 300-500mm high, and there are 8-15 lifting lugs.

3. The multi-purpose hoisting fixture for the control box of a large marine methanol main engine blower according to claim 2, characterized in that: The tilt angle between the forward-leaning blower control box hoisting bracket (6) and the vertical horizontal plane is 3°-8°; the longitudinal bracket of the longitudinal bracket part tooling assembly (2) has a long strip hole width of 10-30mm and an adjustable length range of 500-800mm, which is suitable for various blower control box installation sizes.

4. The multi-purpose hoisting fixture for the control box of a large marine methanol main engine blower according to claim 3, characterized in that: The anti-tipping support device is a threaded rod structure, and the support height can be adjusted by rotation, with a maximum adjustment stroke of 100mm.

5. The multi-purpose hoisting fixture for the control box of a large marine methanol main engine blower according to claim 4, characterized in that: The caster (7) is a 4-inch polyurethane silent wheel with a single load capacity of 120kg. The bracket uses double ball bearings and is treated with anti-corrosion coating.

6. The multi-purpose hoisting fixture for the control box of a large marine methanol main engine blower according to claim 5, characterized in that: A 3-8mm thick steel plate is provided between the blower control box hoisting bracket (6) and the longitudinal support tooling assembly (2) for transition connection. The edges of the steel plate are chamfered to avoid stress concentration.

7. The multi-purpose hoisting fixture for the control box of a large marine methanol main engine blower according to claim 6, characterized in that: The rear support tooling assembly (3) is a triangular truss structure, welded to the back of the longitudinal support tooling assembly (2) to enhance the overall torsional stiffness.

8. The multi-purpose hoisting fixture for the control box of a large marine methanol main engine blower according to claim 7, characterized in that: The front support (4) is provided with a reinforcing rib at the connection between it and the chassis tooling assembly (1). The rib thickness is 5-15mm and the welding length is 150-200mm.

9. The multi-purpose hoisting fixture for the control box of a large marine methanol main engine blower according to claim 8, characterized in that: The tooling surface is coated with epoxy zinc-rich primer and polyurethane topcoat, with a total coating thickness of ≥120μm, meeting the corrosion protection requirements of the marine environment.

10. The multi-purpose hoisting fixture for the control box of a large marine methanol main engine blower according to claim 9, characterized in that: The lifting lugs are made of forged alloy steel, with a rated load of 500 kg, and are fixed to the support nodes by double-sided full welding.

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