A mounting structure for a duct and a gear box

Abstract

The utility model provides a kind of mounting structure for culvert and gear box, comprising: gear box lifting platform and movable base, gear box lifting platform includes jacking disc, screw rod, jacking disc support, jacking disc is fastened connection with gear box, jacking disc is rotatable;Screw rod is connected with the lower middle part of jacking disc by screw thread;Jacking disc support is connected with screw rod by screw thread, jacking disc support is located below jacking disc;Movable base is located below culvert.By the utility model can improve installation efficiency, reduce the cost of using crane or headstock, with higher security and adaptability, make culvert, gear box installation convenient, improve the reliability and security of power system whole.

Description

Technical Field

[0001] This utility model belongs to the technical field of airship power system, and particularly relates to an installation structure for ducts and gearboxes. Background Technology

[0002] When assembling a ducted engine, a large rotating trolley is often used as a reference. First, the core components such as the high-pressure compressor rotor, combustion chamber, and high-pressure turbine are installed vertically. Then, the large rotating trolley is rotated 180° to install the fan vertically. After rotating it another 180°, the low-pressure turbine and rear casing are installed. Finally, it is rotated 90° to make the aero engine horizontal. A crane or overhead crane is used to lift the ducted engine and install it on a transport vehicle for the installation of other external accessories. The whole process requires rotating the ducted engine multiple times, which is unsafe, inefficient, and requires a certain height and facilities in the factory. Utility Model Content

[0003] To address the challenges of connecting the drive shaft system, steering pipe assembly, gearbox assembly, and duct during hoisting, which results in low safety, efficiency, and stringent requirements on plant height and facilities, this invention provides an installation structure for the duct and gearbox. This structure offers efficient installation of the drive shaft system, steering pipe assembly, gearbox assembly, and duct, improving installation efficiency, reducing the cost of using cranes or overhead cranes, enhancing safety and adaptability, facilitating duct and gearbox installation, and improving the overall reliability, efficiency, and safety of the power system. The technical solution is as follows: An installation structure for ducts and gearboxes is provided, comprising: a gearbox lifting platform and a movable base 4. The gearbox lifting platform includes a lifting plate 1, a lead screw 2, and a lifting plate support 3. The lifting plate 1 is securely connected to the gearbox, and the lifting plate 1 can rotate. Screw 2 is threadedly connected to the lower center of lifting plate 1; The lifting plate support 3 is threadedly connected to the lead screw 2, and the lifting plate support 3 is located below the lifting plate 1; The movable base 4 is located below the duct.

[0004] Optionally, the movable base 4 includes a support member and casters, the support member being arranged horizontally and vertically, and the casters being welded to the bottom of the vertical support member.

[0005] Optionally, the support member is a square steel, and the movable base 4 also includes an angle member located at the connection between the transverse support member and the longitudinal support member.

[0006] Optionally, the support member is welded and secured to the angle member.

[0007] Optionally, the gearbox lifting platform is connected to the gearbox by bolts.

[0008] Optionally, the lifting platform 1 is made of carbon structural steel.

[0009] Optionally, the lifting plate support 3 is made of carbon structural steel.

[0010] The beneficial effects of this utility model are at least as follows: 1) Mobile installation platform The duct and gearbox mounting structure can be moved to any installation area within the factory, reducing installation site restrictions. It can be used in any area, such as engine installation area, airship installation area, and field maintenance area.

[0011] 2) High-precision installation and adjustment A movable installation platform and a gearbox lifting platform are adopted. A gearbox installation reference surface is designed, and the gearbox is firmly connected to the installation reference surface to realize multi-degree-of-freedom adjustment of the gearbox and ensure adjustable installation accuracy.

[0012] 3) Reduce costs The duct and gearbox installation structure is designed based on functional requirements, resulting in a simple, reliable, and high-performance system. Raw materials and manufacturing processes meet functional requirements while maintaining low cost. Compared to previous installation methods using large equipment such as overhead cranes and gantry cranes, the mobile installation platform occupies less space, improves installation efficiency, and reduces costs. Attached Figure Description

[0013] Figure 1 This is an overall schematic diagram; Figure 2 This is a schematic diagram showing the specific components of a duct and gearbox mounting structure. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] The features and illustrative embodiments of various aspects of this utility model will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a comprehensive understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. This utility model is by no means limited to any specific arrangements and methods set forth below, but covers any improvements, substitutions, and modifications to the structure, method, and apparatus without departing from the spirit of this utility model. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring this utility model.

[0016] It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other, and the various embodiments can be referenced and cited from each other.

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0018] This utility model relates to a structure in which an engine drives a propeller to rotate via a steering pipe assembly, a transmission shaft system, and a gearbox, and a ducted drive system is installed. It is applicable to ducted power units where the engine drives the propeller via a gearbox, and can be used in applications such as airship power systems.

[0019] See Figure 1 and Figure 2 One embodiment of this utility model provides an installation structure for ducts and gearboxes, including: a gearbox lifting platform and a movable base 4. The gearbox lifting platform includes a lifting plate 1, a lead screw 2, and a lifting plate support 3. The lifting plate 1 is securely connected to the gearbox, and the lifting plate 1 can rotate. Screw 2 is threadedly connected to the lower center of lifting plate 1; The lifting plate support 3 is threadedly connected to the lead screw 2, and the lifting plate support 3 is located below the lifting plate 1; The movable base 4 is located below the duct.

[0020] In one embodiment, the movable base 4 includes a support member and a caster wheel. The support member is arranged horizontally and vertically, and the caster wheel is welded to the bottom of the vertical support member.

[0021] In one embodiment, the support member is a square steel, and the movable base 4 further includes an angle member located at the connection between the transverse support member and the longitudinal support member.

[0022] The support components are welded and secured to the angle brackets.

[0023] The gearbox lifting platform is connected to the gearbox by bolts.

[0024] The lifting plate and its support are made of Q235 carbon structural steel.

[0025] The lifting plate 1 securely connects to the gearbox, ensuring a tight connection between the gearbox and the lifting plate 1 during installation. This improves upon the traditional hoisting or manual support methods, allowing the lifting plate 1 to complete the installation and reducing resource consumption.

[0026] The lead screw 2 controls the lifting of the jacking plate 1 and the gearbox, ensuring the positioning of the gearbox and the transmission shaft system. The traditional method of positioning the gearbox and transmission shaft system by hoisting is changed to mechanical lifting control, which improves the positioning accuracy and ensures that the target position can be accurately reached for installation.

[0027] The lifting plate support 3 is used to reliably support the lifting plate 1 and the lead screw 2, thereby supporting the gearbox and its transmission shaft system, ensuring the stability and reliability of the whole during the assembly process, and avoiding the instability and swaying of traditional hoisting methods.

[0028] The movable base mounting structure 4 consists of square steel, angle brackets, and casters. It spatially fixes the lifting components and provides support for the gearbox, drive shaft, duct, and engine end. The square steel and angle brackets are welded together to create space for assembly. The casters are welded to the bottom of the square steel to accommodate multiple adjustments during installation. The mounting structure is adjustable to accommodate ducts of different sizes, allowing for the docking and installation of the gearbox with the duct, drive shaft, engine end, fan blades, etc.

[0029] The specific implementation process is as follows: 1. Securely connect the gearbox 6 to the lifting plate 1 in the entire power transmission system. The lifting plate 1 and the gearbox are connected by 8 process bolts. Since the gearbox is not easy to move, the lifting plate 1 is equipped with a rotation and fixing function to facilitate alignment with the gearbox holes. Disconnect the gearbox from the steering tube assembly and the drive shaft system. One side of the steering tube assembly and the drive shaft system is connected to the engine and steering bracket. The gearbox side is adjusted by adjusting the gearbox lifting platform, including the lifting plate 1, the lead screw 2, and the lifting plate support 3, to ensure the shaft system is in place. Then, place the duct on the movable base 4.

[0030] 2. Adjust the gearbox lifting platform to align the gearbox and duct to their theoretical positions. Take the extended drive shaft 7 and the rear steering pipe, secure one end to the gearbox, and connect the other end to the installation position inside the duct using process bolts after comparing the positions.

[0031] 3. Secure the gearbox to the duct using the fixed bracket 5 (6 locations). After the engine output shaft is installed, move the movable base mounting structure 4 to the installation position. Adjust the installation position using the gearbox lifting platform. Use the process of removing one process bolt diagonally and installing one mounting bolt to secure the long drive shaft inside the duct, the rear steering pipe, and the engine output shaft system together with torque.

[0032] 4. Remove the bolts connecting the gearbox lifting platform and the gearbox, take out the blades, and tighten the connection between the blade hub and the gearbox.

[0033] 5. The duct and gearbox mounting structure allows for multiple height adjustments and movements during installation, enabling better control over the precise and efficient connection between the gearbox and the drive shaft system, steering pipe assembly, duct, fixed bracket, and engine end. After installation, the gearbox and gearbox lifting platform are disassembled, and the tooling is moved to the tooling storage area for better subsequent blade and hub installation.

[0034] The above description merely illustrates the embodiments of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Furthermore, any parts of this utility model not described in detail are conventional techniques.

Claims

1. A mounting structure for ducts and gearboxes, characterized in that, include: The gearbox lifting platform and its movable base include a lifting plate, a lead screw, and a lifting plate support. The lifting plate is securely connected to the gearbox, and the lifting plate can rotate. The lead screw is threaded to the lower center of the lifting plate; The lifting plate support is threadedly connected to the lead screw, and the lifting plate support is located below the lifting plate. The movable base is located below the duct.

2. The installation structure according to claim 1, characterized in that, The movable base includes support components and casters. The support components are arranged horizontally and vertically, and the casters are welded to the bottom of the vertical support components.

3. The installation structure according to claim 2, characterized in that, The support is made of square steel, and the movable base also includes: angle brackets, which are located at the connection between the transverse support and the longitudinal support.

4. The installation structure according to claim 3, characterized in that, The support components are welded and secured to the angle brackets.

5. The installation structure according to claim 1, characterized in that, The gearbox lifting platform is connected to the gearbox by bolts.

6. The installation structure according to claim 1, characterized in that, The lifting platform is made of carbon structural steel.

7. The installation structure according to claim 1, characterized in that, The lifting plate support is made of carbon structural steel.

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