Auxiliary tool for measuring installation gap of aircraft engine

Abstract

The utility model relates to an auxiliary tool for measuring the installation clearance of an aircraft engine, which comprises a thrust pin stop block, a ball bowl stop block, a base, a sliding block, an ejector head, a knurled flat head screw, a structural frame plate, an engine thrust pin and an engine main installation joint ball bowl end face, and is characterized in that the sliding block is arranged at one end of the base, and the ejector head used for being attached to the structural frame plate is screwed into the other end of the base; the sliding block is provided with a thrust pin check block used for being attached to an engine thrust pin and a knurled flat head screw used for fastening the thrust pin check block and the sliding block, and the base is provided with a ball bowl check block used for being attached to the end face of a ball bowl of an engine main installation joint. And the top head is provided with a nut for adjusting the extension amount of the top head. According to the utility model, an aircraft engine installation gap measurement method is effectively optimized, so that the accuracy of gap measurement data is improved, the time required for gap measurement is shortened, and the labor output of an operator is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft installation gap measurement, in particular to an auxiliary tool for measuring the installation gap of an aircraft engine. Background Art

[0002] After the aircraft's engine is fixed to the fuselage, the gap between the engine thrust pin and the end face of the engine main mounting knob bowl must be measured according to the design and process document requirements to ensure the accuracy of the thrust pin installation position and meet the installation gap requirements.

[0003] Currently, the gap between the engine thrust pin and the end face of the engine main mounting ball bowl is measured as follows: the operator cuts a small section of fuse and places it between the engine thrust pin and the end face of the engine main mounting ball bowl. When this section of fuse does not loosen freely, the fuse is completely removed and the length of the fuse section is measured with a vernier caliper to measure the gap between the two. Due to the limited operating space, it is difficult to ensure the perpendicularity of the fuse and the measuring surface in the current gap measurement, resulting in large measurement errors. At the same time, due to the limited operating space, the current measurement technology usually requires multiple operations to complete, which also increases the operator's labor output. Utility Model Content

[0004] The technical problem solved by the present invention is to provide an auxiliary tool for measuring the installation gap of an aircraft engine, so as to solve the problems in the above-mentioned background technology.

[0005] The technical problem solved by the present invention is achieved by the following technical solutions:

[0006] An auxiliary tool for measuring the installation clearance of an aircraft engine, comprising a thrust pin stopper, a bowl stopper, a base, a slider, a top head, a knurled flat head screw, a structural frame plate, an engine thrust pin and an end face of an engine main mounting section bowl, wherein a slider is installed at one end of the base, a top head for fitting with the structural frame plate is screwed into the other end of the base, a thrust pin stopper for fitting with the engine thrust pin and a knurled flat head screw for fastening the thrust pin stopper and the slider are provided on the slider, and a bowl stopper for fitting with the end face of the engine main mounting section bowl is provided on the base, the measuring surface of the bowl stopper fits with the end face of the engine main mounting section bowl, and the measuring surface of the thrust pin stopper fits with the engine thrust pin; and the top head is provided with a nut for adjusting the extension amount of the top head.

[0007] In the present invention, the measuring surfaces of the thrust pin stopper and the bowl stopper are both arc-shaped, which are used to adapt to the engine thrust pin and the end surface of the engine main mounting joint bowl, avoiding interference between the thrust pin stopper, the bowl stopper and the measuring part during disassembly and assembly.

[0008] In the utility model, an internal thread is provided in the base, and an external thread is provided on the ram that is threadedly connected to the internal thread. The ram and the base are threadedly connected, and the ram has a nut. The extension amount of the ram can be adjusted by the nut to change the total height of the gap measurement auxiliary tool, so that it is temporarily clamped at the measuring position.

[0009] In the present invention, a rubber pad is provided on the outer end surface of the head for fitting with the structural frame plate; and a stopper is provided at the rear end of the base to prevent the slider from falling off.

[0010] In the utility model, a support frame is provided on the base, and a bowl stopper is provided on the support frame.

[0011] In the utility model, the sliding block is provided with a through hole for installing a knurled flat head screw.

[0012] Beneficial effects: The utility model effectively optimizes the aircraft engine installation clearance measurement method, thereby improving the accuracy of the clearance measurement data, shortening the time required for clearance measurement, and also reducing the operator's labor output. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of a preferred embodiment of the present utility model.

[0014] Figure 2 It is a left view of a preferred embodiment of the present utility model.

[0015] Figure 3 This is a schematic diagram of the use of a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0016] 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 with reference to specific illustrations.

[0017] See also Figures 1-3An auxiliary tool for measuring the installation gap of an aircraft engine includes a thrust pin stopper 1, a bowl stopper 2, a base 3, a slider 4, a stopper 5, a top head 6, a rubber pad 7, a knurled flat head screw 8, a structural frame plate 9, an engine thrust pin 10 and a bowl end face 11 of the engine main mounting section, wherein the base 3 has a slider 4 installed at one end, and a top head 6 is screwed into the other end of the base 3, the slider 4 is provided with a thrust pin stopper 1 and a knurled flat head screw 8 for fastening the thrust pin stopper 1 and the slider 4, and the bowl stopper 2 is provided on the base 3, the rubber pad 7 on the outer end face of the top head 6 is in contact with the structural frame plate 9; at the same time, a stopper 5 is provided at the tail end of the base 3 to prevent the slider 4 from falling off; the measuring surface of the bowl stopper 2 is in contact with the bowl end face 11 of the engine main mounting section, and the measuring surface of the thrust pin stopper 1 is in contact with the engine thrust pin 10.

[0018] In this embodiment, the measuring surfaces of the thrust pin stopper 1 and the ball bowl stopper 2 are both arc-shaped, which are used to adapt to the engine thrust pin 10 and the ball bowl end face 11 of the engine main mounting joint. The arc length is relatively short to avoid interference between the thrust pin stopper 1 and the ball bowl stopper 2 and the measuring part during disassembly and assembly.

[0019] In this embodiment, an internal thread is provided in the base 3, and an external thread is provided on the jack 6 for threaded connection with the internal thread. The jack 6 and the base 3 are threadedly connected. At the same time, the jack 6 has a nut, and the extension amount of the jack 6 can be adjusted by the nut to change the total height of the gap measurement auxiliary tool, so that it can be temporarily clamped at the measuring position.

[0020] In this embodiment, a support frame is provided on the base 3 , and a bowl stopper 2 is provided on the support frame.

[0021] In this embodiment, a through hole is provided on the slider 4 for mounting a knurled flat head screw 8 .

[0022] In this embodiment, the steps for using the gap measurement auxiliary tool are as follows:

[0023] Step 1) Screw the external thread of the mandrel 6 into the internal thread of the base 3. Then, place the gap measurement auxiliary tool on the side of the engine thrust pin 10 and align the measuring surface of the bowl stopper 2 with the end surface 11 of the engine main mounting joint bowl;

[0024] Step 2) Unscrew the external thread of the mandrel 6 from the internal thread of the base 3 so that the rubber pad 7 on the outer end surface of the mandrel 6 fits against the structural frame plate 9, thereby clamping the gap measurement auxiliary tool;

[0025] Step 3) Loosen knurled grub screw 8 and move slider 4 to move thrust pin stop 1 until the measuring surface of thrust pin stop 1 is aligned with engine thrust pin 10. Then tighten knurled grub screw 8 to secure slider 4 and thrust pin stop 1.

[0026] Step 4) Screw the external thread of the plug 6 into the internal thread of the base to separate the rubber pad 7 on the outer end surface of the plug 6 from the structural frame plate 9, and remove the gap measurement auxiliary tool;

[0027] Step 5) Use a vernier caliper to measure the gap between the measuring surface of the bowl stopper 2 and the measuring surface of the thrust pin stopper 1. The measured value is the gap value between the engine thrust pin 10 and the bowl end face 11 of the engine main mounting joint.

[0028] 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 are merely illustrative of 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 auxiliary tool for measuring the installation clearance of an aircraft engine, comprising a thrust pin stopper, a bowl stopper, a base, a slider, a top head, a knurled flat head screw, a structural frame plate, an engine thrust pin and an end face of a bowl of an engine main mounting joint, characterized in that: A slider is installed at one end of the base, and a top head for fitting with the structural frame plate is screwed into the other end of the base. The slider is provided with a thrust pin stopper for fitting with the engine thrust pin, and a knurled flat head screw for fastening the thrust pin stopper and the slider. A bowl stopper for fitting with the end face of the ball bowl of the engine main mounting section is provided on the base, the measuring surface of the bowl stopper fits with the end face of the ball bowl of the engine main mounting section, and the measuring surface of the thrust pin stopper fits with the engine thrust pin; and the top head is provided with a nut for adjusting the extension amount of the top head.

2. The aircraft engine installation clearance measurement auxiliary tool according to claim 1, characterized in that: The measuring surfaces of the thrust pin stopper and the ball bowl stopper are both arc-shaped.

3. The aircraft engine installation clearance measurement auxiliary tool according to claim 1, characterized in that: An internal thread is provided in the base, and an external thread which is threadably connected to the internal thread is provided on the top head.

4. The aircraft engine installation clearance measurement auxiliary tool according to claim 1, characterized in that: The outer end surface of the plug is provided with a rubber pad for fitting with the structural frame plate.

5. The aircraft engine installation clearance measurement auxiliary tool according to claim 1, characterized in that: A stop block is provided at the rear end of the base.

6. The aircraft engine installation clearance measurement auxiliary tool according to claim 1, characterized in that: A support frame is provided on the base, and a bowl stopper is provided on the support frame.

7. The aircraft engine installation clearance measurement auxiliary tool according to claim 1, characterized in that: The sliding block is provided with a through hole for installing a knurled flat head screw.

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