A micro turbojet engine case dismounting tool table

Abstract

A fixture for disassembling a micro turbojet engine casing includes a ground frame, a power mechanism, a transmission mechanism, a belt lock, and a pressure plate. The power mechanism and transmission mechanism are mounted on the ground frame. The belt lock is installed on different models of micro turbojet engine casings, and the pressure plate is bolted to the air intake. This solution solves the problem of difficult disassembly and assembly of micro turbojet engine casings and is applicable to engines of various sizes and shapes.

Description

Technical Field

[0001] This utility model belongs to the technical field of micro turbojet engine assembly process, and relates to a tooling platform, especially a tooling table for disassembling the casing of a micro turbojet engine. Background Technology

[0002] Due to their small size, compact structure, high operating speed, and extremely demanding operating conditions, micro turbojet engines require complex assembly processes and very high precision. If the fit of components does not meet the specified technical requirements, or if the relative positions of the components are incorrect, the performance of the product will be affected, rendering it malfunctioning. Therefore, improving the efficiency and quality of assembly work is of great significance for shortening product manufacturing cycles, reducing production costs, and ensuring product quality.

[0003] During the operation of a micro turbojet engine, the high temperature and pressure generated internally can cause leakage of internal gases. Sealing technology directly affects the engine's efficiency, thrust-to-weight ratio, and fuel economy; therefore, employing reasonable and reliable sealing technology is crucial for aero engines. Aero engines primarily use a casing to contain airflow and engine components such as the rotor and stator within a closed space to ensure normal engine operation, thus requiring excellent casing sealing. A consequence of this is that while ensuring a sealed casing, its tight fit with other components makes disassembly and assembly difficult for personnel. Therefore, a casing disassembly and assembly fixture is needed to meet the engine's assembly requirements. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, such as single function and limited models, and to propose a micro turbojet engine casing disassembly tooling. This tooling is a compact and multifunctional casing disassembly tooling, which can save time and effort in disassembling and assembling the engine casing and meet the assembly and use requirements of micro turbojet engines.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A tooling table for disassembling the casing of a micro turbojet engine includes a ground frame, a power mechanism, a transmission mechanism, a belt lock, and a pressure plate. The power mechanism and the transmission mechanism are located on the ground frame. The belt lock is installed on the casing of different models of micro turbojet engines. The pressure plate is pressed onto the air intake by bolts.

[0006] The aforementioned ground platform includes a turntable base, a rotating shaft, a lifting platform, a grooved suspension rod, a bottom hole, a counterweight platform, a fixed wrench, a rocker arm, and a screw rod. The lifting platform houses a power mechanism and a force transmission mechanism. The functions of the power mechanism and the force transmission mechanism are achieved through the rotating shaft, the screw rod, couplings, and gears. The ground platform is stabilized on the ground by the counterweight platform.

[0007] The belt lock includes a locking platform, a locking nut, a screw, a toothed belt, and lifting lugs. The two ends of the toothed belt pass through the locking platform and are fixed to the locking nut with bolts. The belt lock is fixed to the engine casing using the toothed belt and mounted on a grooved hanger on a ground-based platform using the lifting lugs.

[0008] The pressure plate has rubber on its upper and lower surfaces to protect the engine's air intake from scratches. A long slot in the center of the pressure plate facilitates adjustment of its position.

[0009] The lifting platform moves up and down via a rocker arm and a helical rod. It rotates on a turntable base via a pivot, facilitating the loading and unloading of the engine. The lifting platform is locked to the pivot using a locking wrench.

[0010] The grooved rod is provided with equally spaced rectangular grooves for placing lifting lugs.

[0011] The bottom hole is used to house the engine's air intake, and there are threaded holes around the bottom hole for mounting the pressure plate.

[0012] The toothed belt has rectangular grooves to increase friction. It contains steel wire for strength and durability. The toothed belt extends and retracts on the screw via a locking nut, allowing it to secure casings of different sizes.

[0013] The locking nut has threaded holes on its six outer end faces for securing the toothed belt. One end of the screw is fixed to the locking plate.

[0014] The beneficial effects of this utility model are: the disassembly fixture for the engine casing of this utility model has a simple, stable, and sturdy structure, and is highly practical. It can disassemble and assemble engine casings of different sizes, saving time and effort.

[0015] This utility model provides a micro turbojet engine casing disassembly tooling table with a simple structure and multiple functions, which can meet the assembly needs of different engines. Attached Figure Description

[0016] This utility model has 4 attached drawings, among which Figure 1 The attached figure is for the abstract of the instruction manual.

[0017] Figure 1 This is a schematic diagram of the overall structure of a micro turbojet engine casing disassembly fixture according to the present invention; Figure 2 This is a schematic diagram of the ground platform according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the universal lock described in an embodiment of this utility model; Figure 4 This is a schematic diagram of the pressure plate described in an embodiment of the present utility model; In the diagram: 1. Ground platform; 2. Engine; 3. Universal lock; 4. Pressure plate; 101. Turntable; 102. Shaft; 103. Lifting platform; 104. Grooved lifting rod; 105. Bottom hole; 106. Counterweight platform; 107. Fixed wrench; 108. Rocker arm; 109. Screw rod; 301. Locking plate; 302. Locking nut; 303. Screw; 304. Toothed belt; 305. Lifting lug. Detailed Implementation

[0018] To facilitate understanding and implementation of this utility model by those skilled in the art, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 As shown, a tooling table for disassembling the casing of a micro turbojet engine includes a ground platform, a power mechanism, a transmission mechanism, a belt lock, and a pressure plate. The power mechanism and transmission mechanism are mounted on the ground platform. The belt lock is installed on the casing of the micro turbojet engine, and two lifting lugs are attached to a grooved lifting rod. The pressure plate is bolted to the air intake. The casing is slowly detached by raising the lifting platform using a rocker arm.

[0020] Four pressure plates are placed around the bottom hole of the ground platform, each fixed to the counterweight platform with two bolts. When disassembling the casing, the head area of ​​the pressure plate presses against the back of the air intake. When installing the casing, the end face of the air intake is placed on the pressure plate, and a flat plate is placed on the end face of the casing's tail nozzle. The lifting platform is slowly lowered by using a rocker arm until it contacts the flat plate, thus slowly installing the casing into place.

[0021] like Figure 2 As shown, the lifting platform moves up and down via a rocker arm and a helical rod. The lifting platform rotates on a turntable base via a pivot, facilitating the loading and unloading of the engine. The lifting platform is locked to the pivot using a locking wrench. The bottom hole diameter is sufficient to accommodate the air intake of engines weighing less than 200 kg, and the threaded holes around the bottom hole are used to install the pressure plate.

[0022] The slotted boom has equally spaced rectangular slots to hold the lifting lugs in place and prevent them from falling off. Depending on the size of the engine casing, the lifting lugs can be placed in the corresponding rectangular slots.

[0023] like Figure 3 As shown, the toothed belt has rectangular grooves to increase friction. The toothed belt contains steel wire for strength and durability. The toothed belt extends and retracts on the screw via a locking nut, allowing it to secure casings of different sizes.

[0024] The toothed belt passes through the locking platform at both ends and is fixed to the locking nut with bolts. The belt lock is fixed to the engine casing using the toothed belt and is mounted on the grooved hanger on the ground platform using lifting lugs.

[0025] The locking nut has threaded holes on its six outer end faces for securing the toothed belt.

[0026] One end of the screw is fixed to the locking platform, and the arc surface of the locking platform contacts the casing. like Figure 4 As shown, the upper and lower surfaces of the pressure plate are covered with rubber to protect the engine's air intake from scratches. A long slot in the middle of the pressure plate facilitates adjustment of its position.

[0027] This utility model has a simple structure and meets the disassembly and assembly requirements of casings of different sizes for micro turbojet engines with different thrust levels.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tooling table for disassembling the casing of a miniature turbojet engine, characterized in that, It includes a ground platform (1), a power mechanism, a transmission mechanism, a belt lock (3) and a pressure plate (4). The power mechanism and the transmission mechanism are located on the ground platform (1). The belt lock (3) is installed on the casing of different models of micro turbojet engines (2). The pressure plate (4) is pressed onto the air intake by bolts.

2. The micro turbojet engine casing disassembly fixture according to claim 1, characterized in that: The ground platform (1) includes a turntable base (101), a rotating shaft (102), a lifting platform (103), a grooved hanging rod (104), a bottom hole (105), a counterweight platform (106), a fixed wrench (107), a rocker arm (108), and a screw rod (109); the lifting platform (103) is equipped with a power mechanism and a force transmission mechanism; the functions of the power mechanism and the force transmission mechanism are realized through the rotating shaft (102), the screw rod (109), the coupling, and the gears; the ground platform (1) is stabilized on the ground by the counterweight platform (106).

3. The micro turbojet engine casing disassembly fixture according to claim 1, characterized in that: The belt buckle (3) includes a locking platform (301), a locking nut (302), a screw (303), a toothed belt (304), and a lifting lug (305); the two ends of the toothed belt (304) pass through the locking platform (301) and are fixed to the locking nut (302) by bolts; the belt buckle (3) is fixed to the engine casing by the toothed belt (304) and installed on the grooved hanger (104) of the ground platform (1) by the lifting lug (305).

4. The micro turbojet engine casing disassembly fixture according to claim 1, characterized in that: The pressure plate (4) has rubber on its upper and lower surfaces to protect the engine's air intake from scratches; the pressure plate (4) has a long hole in the middle to facilitate adjustment of the position of the pressure plate (4).

5. A micro turbojet engine casing disassembly fixture according to claim 2, characterized in that: The lifting platform (103) moves up and down via a rocker arm (108) and a screw rod (109); the lifting platform (103) rotates on a turntable base (101) via a pivot (102) to facilitate the loading and unloading of the engine; the lifting platform (103) is locked to the pivot (102) by a wrench (107).

6. A micro turbojet engine casing disassembly fixture according to claim 2, characterized in that: The grooved rod (104) is provided with equally spaced rectangular grooves for placing lifting lugs (305).

7. A micro turbojet engine casing disassembly fixture according to claim 2, characterized in that: The bottom hole (105) is used to place the engine's air intake. The bottom hole (105) has threaded holes around its perimeter for mounting the pressure plate (4).

8. A tooling stand for disassembling a micro turbojet engine casing according to claim 3, characterized in that: The toothed belt (304) is provided with a rectangular groove, which can increase the friction force; the toothed belt (304) contains steel wire inside, which is strong and reliable; the toothed belt (304) can be extended and shortened by moving forward and backward on the screw (303) through the locking nut (302), which is used to fix the casing of different sizes.

9. A micro turbojet engine casing disassembly fixture according to claim 3, characterized in that: The locking nut (302) has threaded holes on its six outer end faces for fixing the toothed belt (304); one end of the screw (303) is fixed on the locking table (301).

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