Assembly tool for hydraulic drawing device of aviation generator shaft

Abstract

The utility model relates to the technical field of part assembly, in particular to an assembly tool of a hydraulic puller of an aero-generator shaft, which comprises a base. The shell is distributed on the outer side of the base, the lower end of the shell is pressed on a product shell, the pull rod is installed on the base in a sliding and penetrating mode and connected with a product shaft through threads, and the sealing assembly is arranged on the base and the shell. According to the utility model, the shaking of assembly parts can be reduced, the tight assembly of products is completed, the effect of tight assembly of high-speed rotating aero-generators is achieved, and the matching force can be controlled as required according to the pressure of hydraulic oil.

Description

Technical Field

[0001] The utility model relates to the technical field of parts assembly, in particular to an assembly tool for a hydraulic puller of an aircraft generator shaft. Background Art

[0002] In aircraft generators, after the parts are assembled, the shaft needs to continuously provide an axial force of approximately 3 to 10 tons to ensure a tight fit during flight. This requires assembling the parts while continuously providing tension and tightening the nuts.

[0003] The axial force is usually achieved by hydraulic lifting with a jack, but the existing jack hydraulic pullers on the market are difficult to adapt to the complex shape and narrow installation space of the generator. Summary of the Invention

[0004] In order to solve the above problems, the utility model proposes an assembly tool for a hydraulic puller of an aircraft generator shaft.

[0005] An assembly tool for a hydraulic puller for an aircraft generator shaft includes a base, a shell distributed outside the base with its lower end pressed against a product shell, a pull rod slidably installed on the base and threadedly connected to the product shaft, and a sealing assembly arranged on the base and the shell.

[0006] Furthermore, the sealing assembly includes a nut that cooperates with the shell thread, a piston arranged inside the base and capable of sliding along the base to push the pull rod to move, and the inner and outer walls of the piston are sealed respectively through a large sealing ring, a small sealing ring and the base.

[0007] The beneficial effects of the utility model are:

[0008] The utility model can reduce the shaking of the assembled parts, completes the tight assembly of the product, plays a role in the tight assembly of high-speed rotating aircraft generators, and can control the matching force as needed according to the pressure of the hydraulic oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0010] Figure 1 This is a schematic cross-sectional view of the utility model;

[0011] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0012] Reference numerals:

[0013] 1. Nut; 2. Large sealing ring; 3. Small sealing ring; 4. Piston; 5. Base; 6. Housing; 7. Pull rod; 8. Nut tightening tool; 9. Product housing; 10. Product nut; 11. Product shaft. DETAILED DESCRIPTION

[0014] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below.

[0015] like Figure 1 and Figure 2 As shown, an assembly tool for a hydraulic puller of an aircraft generator shaft includes a base 5, a shell 6 distributed on the outside of the base 5 and with the lower end pressed on the product shell 9, a pull rod 7 slidingly installed on the base 5 and connected to the product shaft 11 by a thread, and a sealing assembly arranged on the base 5 and the shell 6.

[0016] The utility model adopts the above-mentioned design to reduce the shaking of the assembled parts, completes the tight assembly of the product, plays a role in tightly assembling the high-speed rotating aircraft generator, and can control the matching force as needed according to the pressure of the hydraulic oil.

[0017] The sealing assembly comprises a nut 1 threadedly engaged with a housing 6, a piston 4 disposed within a base 5 and capable of sliding along the base 5 to push a pull rod 7, and a large sealing ring 2 and a small sealing ring 3, respectively, between the inner and outer walls of the piston 4 and the base 5 to achieve a seal. The nut 1 provides protection against accidental injury from high-pressure liquid, while the large and small sealing rings 2 and 3 provide a seal.

[0018] The base 5 is filled with hydraulic oil. After the hydraulic oil is injected into the base 5, the piston 4 can move upward, pushing the pull rod 7 to move upward. The pull rod 7 is connected to the product shaft 11 through a thread, so that the product shaft 11 and the product nut 10 are lifted. At this time, the nut loses its pre-tightening force.

[0019] The piston 4 is hollow in the middle, so that the pull rod 7 pulls the product along the center and the force is balanced.

[0020] The product nut 10 is equipped with a nut tightening tool 8. The nut is tightened or loosened by hand or tool, and then the hydraulic oil is removed to complete the assembly or disassembly. The shell 6 plays a supporting role, and the lower end is pressed on the product shell 9.

[0021] The nut tightening tool 8 is arranged inside the housing 6. The nut tightening tool 8 can cover the product nut 10, leaving a space in the middle for the pull rod 7 to pass through.

[0022] During actual use, high-pressure hydraulic oil is filled into the base 5. Different hydraulic values ​​are specified for different products. The piston 4 is pushed upward, and the pull rod 7 is pushed to move along its own axis with the help of the piston 4. The product shaft 11 is lifted through the pull rod 7, and the product shaft 11 is separated from the product housing 9. The product nut 10 loses its pre-tightening force. After tightening the product nut 10, the pressure of the hydraulic oil is unloaded to complete the assembly. The same applies to disassembly.

[0023] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An assembly tool for a hydraulic puller of an aircraft generator shaft, comprising a base (5), characterized in that: It also includes a shell (6) distributed outside the base (5) and with its lower end pressed on the product shell (9), a pull rod (7) slidably installed on the base (5) and connected to the product shaft (11) by a thread, and a sealing assembly arranged on the base (5) and the shell (6).

2. The assembly tool for the hydraulic puller of an aircraft generator shaft according to claim 1, characterized in that: The sealing assembly includes a nut (1) threadedly matched with the housing (6), a piston (4) arranged inside the base (5) and capable of sliding along the base (5) to push the pull rod (7) to move, and the inner and outer walls of the piston (4) are sealed respectively through a large sealing ring (2), a small sealing ring (3) and the base (5).

3. The assembly tool for the hydraulic puller of an aircraft generator shaft according to claim 1, characterized in that: The base (5) is filled with hydraulic oil.

4. The assembly tool for the hydraulic puller of an aircraft generator shaft according to claim 2, characterized in that: The piston (4) is hollow in the middle.

5. The assembly tool for the hydraulic puller of an aircraft generator shaft according to claim 1, characterized in that: A nut tightening tool (8) is provided inside the housing (6), and the nut tightening tool (8) is sleeved on the product nut (10).

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