Protection tool for rocker arm support of aircraft cabin door

Abstract

The utility model provides an aircraft cabin door rocker arm support protection tool, and belongs to the technical field of civil aircraft assembly. Wherein the base assembly is fixed on the inspection tool frame and is used for determining the position of the cabin door; the bolt assembly is fixed on the base assembly and is used for simulating a cabin door rotating shaft; the internal thread protection sleeve and the external thread protection sleeve are installed in a cabin door rocker arm support product hole and used for protecting a product. According to the utility model, the form of the conventional inspection tool is not changed, the fork lug type support and the steel bolt in the conventional inspection tool are replaced, and the fork lug type support and the steel bolt are mounted on the inspection tool according to inspection requirements, so that the inspection tool is prevented from directly moving relative to a cabin door rocker arm support product to cause abrasion, and the purpose of protecting the product is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of civil aircraft assembly and relates to a protection tool for an aircraft cabin door rocker arm support. Background Art

[0002] In order to meet the practicality of aircraft doors, after the door assembly work is completed, the door appearance inspection and door switch test need to be carried out on the inspection tool to simulate the state of being on the aircraft. At present, the rocker support of the door is the only positioning reference of the inspection tool. Therefore, the main form of the door switch test is to use the inspection tool to connect and locate the rocker support hole. At present, most of the tools use fork-ear supports and are equipped with steel pins, and the support surface and pin positioning products are used for inspection.

[0003] The above method has the following problems:

[0004] (1) Steel latches are relatively hard and are used frequently, which may easily damage the door rocker support holes;

[0005] (2) When the product is positioned on the support surface, friction will occur during rotation, which may easily damage the surface of the rocker support;

[0006] (3) Repairing or reworking damaged products increases the cost of aircraft manufacturing. Utility Model Content

[0007] In order to solve the above-mentioned technical problems, the utility model proposes an aircraft cabin door rocker arm support protection tool, which does not change the existing inspection tooling form, but is only used to replace the fork ear type support and the steel pin in the existing inspection tooling, thereby realizing the protection of the cabin door, eliminating the relative movement between the cabin door rocker arm support product and the inspection tooling, and achieving the purpose of product protection.

[0008] The technical solution of the utility model is:

[0009] A protection tool for an aircraft door rocker arm support, the protection tool comprising a base assembly 01, a latch assembly 02, an internal threaded protective sleeve 03, and an external threaded protective sleeve 04. The base assembly 01 is fixed on the inspection tool frame to determine the door position; the latch assembly 02 is fixed on the base assembly 01, passes through the internal threaded protective sleeve 03 and the external threaded protective sleeve 04, and is used to simulate the door shaft; the internal threaded protective sleeve 03 and the external threaded protective sleeve 04 are installed in the hole of the door rocker arm support product to protect the product. The above components are installed on the inspection tool according to the inspection requirements to avoid relative movement between the inspection tool and the door rocker arm support product and wear, thereby achieving the purpose of product protection.

[0010] The base assembly 01 includes a support 01-01, a bolt 01-02, a cylindrical pin 01-03, a shoulder bushing 01-04, and an adjustment seat 01-05; the support 01-01 is a plate-like structure with a fork ear at one end, which serves as the main load-bearing structure, and its bottom is positioned in the positioning hole on the inspection tooling plate through the cylindrical pin 01-03, and is connected to the inspection tooling frame through the bolt 01-02; the fork ears on the support 01-01 have coaxial circular through grooves, and shoulder bushings 01-04 are installed on both, and the inner diameter of the shoulder bushing 01-04 matches the outer diameter of the small diameter section of the latch 02-01 in the latch assembly 02, and the spacing between the fork ears is greater than the thickness of the door rocker arm support product; the adjustment seat 01-05 is a plate-like structure, which is installed at the bottom of the support 01-01 and is used for compensation in the thickness direction of the support 01-01, so as to adjust the posture of the base assembly 01 during installation, and then adjust the installation position of the door.

[0011] The latch assembly 02 includes a latch 02-01, a guide seat 02-02, a guide screw 02-03, and a tightening bolt 02-04. The latch 02-01 is a stepped shaft, the small diameter section of which is used to simulate the door shaft, and a threaded hole is opened on the side of the large diameter section for installing the guide screw 02-03. The material of the latch 02-01 is the same as that of the product or a material with similar performance; the guide seat 02-02 is a cylinder with a boss on the bottom circumference, and the inner diameter of the cylinder matches the large diameter section of the latch 02-01, so that the latch 02-01 can slide in the cylinder, and a "C"-shaped guide groove is formed on the cylinder wall along the length direction. The latch 02 -01 passes through the "C" shaped guide groove and is screwed into the threaded hole on the side of the latch 02-01. The latch 02-01 moves along the "C" shaped guide groove, thereby realizing that the latch 02-01 extends or retracts in the guide seat 02-02; two through holes are opened on the boss at the bottom of the cylinder. By tightening the bolt 02-04, the latch assembly 02 is installed on the outer end face of the fork ear on one side of the support 01-01 in the base assembly 01, and the latch 02-01 passes through the inner hole of the shoulder bushing 01-04.

[0012] The internal thread protective sleeve 03 and the external thread protective sleeve 04 are both cylinders with a flat plate on the top. The external thread protective sleeve 04 is made of external threads and axial through holes. The through hole diameter matches the small diameter section of the plug 02-01. The external diameter of the internal thread protective sleeve 03 matches the hole diameter of the rocker arm support, and the length of the cylinder is not greater than the thickness of the rocker arm support hole. The axial direction is made of a stepped through hole. The inner diameter of the small diameter section of the stepped through hole matches the small diameter section of the plug 02-01. The large diameter section is made of internal threads, which match the external threads of the external thread protective sleeve 04, and the depth of the large diameter section exceeds the length of the external threads of the external thread protective sleeve 04; the internal thread protective sleeve 03 and the external thread protective sleeve 04 are connected from the rocker arm support After the two sides of the seat are inserted into the installation holes, the external threaded protective sleeve 04 is screwed into the internal threaded protective sleeve 03, so that the lower end surfaces of the top plates of the two are in contact with the outer surfaces on both sides of the rocker arm support hole, and the installed internal threaded protective sleeve 03 and external threaded protective sleeve 04 are inserted between the fork ears of the support 01-01, and the pins 02-01 are inserted into the inner holes of the two to achieve the positioning and connection of the hatch and the inspection tooling; two notches are opened on the edges of the top plates of the internal threaded protective sleeve 03 and the external threaded protective sleeve 04 for installation and disassembly, and the materials of the internal threaded protective sleeve 03 and the external threaded protective sleeve 04 are selected to be the same as or have similar performance to the hatch rocker arm support products.

[0013] Furthermore, the outer dimensions of the support 01-01 are adjusted according to the actual installation position.

[0014] Beneficial effects of the utility model: the utility model adds a hatch rocker arm support product protection tool based on the existing tooling form, uses the base and the protective cover to complete the positioning and activity of the hatch rocker arm support product, the protection method is simple and reliable, and can ensure that the tooling completes the inspection of the hatch under the condition of meeting the theoretical tolerance range, and has the following technical advantages:

[0015] (1) The rocker arm support protection tool avoids direct rotational friction between the inspection tool and the door rocker arm support product by installing a protective cover and a latch, meets the manufacturing tolerance requirements, and effectively protects the door rocker arm support hole;

[0016] (2) The rocker arm support protection tool is installed by installing the protective cover and the base, using the inner side of the base fork ear to contact the end face of the protective cover. Through tolerance allocation, the manufacturing tolerance requirements are met, and sliding friction between the product and the base is avoided, thereby well protecting the end face of the hatch door rocker arm support hole;

[0017] (3) The above-mentioned protection tools can be recycled, which reduces costs. They can also be used in the early assembly process to complete the protection of the entire life cycle before delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the aircraft door rocker arm support protection tool;

[0019] Figure 2An isometric view of the aircraft door rocker support protection tool;

[0020] Figure 3 Isometric view of the base assembly;

[0021] Figure 4 is a schematic diagram of the structure of the latch assembly;

[0022] Figure 5 Schematic diagram of the activity process of the latch assembly, wherein (a) is the state of the latch being extended, and (b) is the state of the latch being retracted;

[0023] Figure 6 It is a cross-sectional view of the internal thread protective sleeve;

[0024] Figure 7 It is an isometric view of the internal thread protective sleeve;

[0025] Figure 8 It is a cross-sectional view of the external thread protective sleeve;

[0026] Fig. 9 It is an isometric view of the external thread protective sleeve;

[0027] Fig.10 This is a schematic diagram of the installation of the internal thread protective sleeve and the external thread protective sleeve;

[0028] Fig.11 This is a schematic diagram of the installation of the base assembly and the latch assembly;

[0029] Fig.12 Install isometric views for the base assembly and latch assembly;

[0030] Fig.13 Schematic diagram of the installation effect of two sets of aircraft door rocker support protection tools, wherein (a) and (b) are front views of the installation of the two sets of protection tools, and (c) is a side view of the installation of the two sets of protection tools;

[0031] In the figure: 01 base assembly; 02 latch assembly; 03 internal thread protective sleeve; 04 external thread protective sleeve; 01-01 support; 01-02 bolt; 01-03 cylindrical pin; 01-04 shoulder bushing; 01-05 adjustment seat; 02-01 latch; 02-02 guide seat; 02-03 guide screw; 02-04 tightening bolt. DETAILED DESCRIPTION

[0032] The technical solution of the utility model is described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. All other embodiments improved or adjusted by ordinary technicians in this field based on the embodiments of the utility model belong to the protection scope of the utility model.

[0033] like Figure 1 As shown, a protection tool for an aircraft door rocker arm support, the protection tool comprises a base assembly 01, a latch assembly 02, an internal threaded protective sleeve 03, and an external threaded protective sleeve 04. The base assembly 01 is fixed on the inspection tool frame to determine the door position; the latch assembly 02 is fixed on the base assembly 01, passes through the internal threaded protective sleeve 03 and the external threaded protective sleeve 04, and is used to simulate the door shaft; the internal threaded protective sleeve 03 and the external threaded protective sleeve 04 are installed in the hole of the door rocker arm support product to protect the product. The above components are installed on the inspection tool according to the inspection requirements to avoid relative movement between the inspection tool and the door rocker arm support product and wear, so as to achieve the purpose of product protection.

[0034] like Figure 2 and Figure 3 As shown, the base assembly 01 includes a support 01-01, a bolt 01-02, a cylindrical pin 01-03, a shoulder bushing 01-04, and an adjustment seat 01-05; the support 01-01 is a plate-like structure with a fork ear at one end, which serves as the main load-bearing structure, and its bottom is positioned in the positioning hole on the inspection tooling card plate through two cylindrical pins 01-03, and is connected to the inspection tooling frame through four bolts 01-02; the fork ears on the support 01-01 have coaxial circular through grooves, and are all equipped with shoulder bushings Bushing 01-04, the inner diameter of the shoulder bushing 01-04 matches the outer diameter of the small diameter section of the latch 02-01 in the latch assembly 02, the fork ear spacing is greater than the thickness of the door rocker arm support product, and two threaded holes are made on the outer end face of the fork ear on one side for installing the latch assembly 02; the adjustment seat 01-05 is a plate-like structure, which is installed between the bottom of the support 01-01 and the inspection tooling, and is used for compensation in the thickness direction of the support 01-01, to achieve adjustment of the installation posture of the base assembly 01, and then adjust the installation position of the door.

[0035] like Figure 4 and Figure 5As shown, the latch assembly 02 includes a latch 02-01, a guide seat 02-02, a guide screw 02-03, and a tightening bolt 02-04. The latch 02-01 is a stepped shaft, the small diameter section of which is used to simulate the door shaft, and a threaded hole is opened on the side of the large diameter section for installing the guide screw 02-03. The material of the latch 02-01 is the same as that of the product or a material with similar performance; the guide seat 02-02 is a cylinder with a boss on the bottom circumference, and the inner diameter of the cylinder matches the large diameter section of the latch 02-01, so that the latch 02-01 can slide in the cylinder, and a "C"-shaped guide groove is formed on the cylinder wall along the length direction, and the latch 02-01 The latch 02-01 passes through the "C"-shaped guide groove and is screwed into the threaded hole on the side of the latch 02-01. The latch 02-01 moves along the "C"-shaped guide groove, thereby realizing that the latch 02-01 extends or retracts in the guide seat 02-02. Two through holes are opened in the boss at the bottom of the cylinder. By tightening the bolt 02-04, the latch assembly 02 is installed at the threaded hole on the outer end face of the fork ear on one side of the support 01-01 in the base assembly 01, and the latch 02-01 passes through the inner holes of the two shoulder bushings 01-04.

[0036] The internal thread protection sleeve 03 and the external thread protection sleeve 04 are both cylinders with a flat plate on the top. Figure 8 and Fig. 9 As shown, the external thread protective sleeve 04 is made of external thread and axial through hole, and the through hole diameter matches the small diameter section of the plug 02-01, as shown in FIG. Figure 6 and Figure 7 As shown, the outer diameter of the internal thread protection sleeve 03 matches the hole diameter of the rocker arm support, and the length of the cylinder is not greater than the thickness of the rocker arm support hole. The axial direction is formed into a stepped through hole, and the inner diameter of the small diameter section of the stepped through hole matches the small diameter section of the plug 02-01. The large diameter section is formed into an internal thread, which matches the external thread of the external thread protection sleeve 04, and the depth of the large diameter section exceeds the length of the external thread of the external thread protection sleeve 04; as shown Fig.10 As shown, after the internal thread protective sleeve 03 and the external thread protective sleeve 04 are inserted into the holes of the rocker arm support from both sides, the external thread protective sleeve 04 is screwed into the internal thread protective sleeve 03, so that the lower end surface of the top plate of the two fits with the outer surface of the two sides of the rocker arm support hole, the installed internal thread protective sleeve 03 and the external thread protective sleeve 04 are inserted between the fork ears of the support 01-01, and the pin 02-01 is inserted into the inner holes of the two to achieve the positioning and connection of the hatch door and the inspection tooling; the internal thread protective sleeve 03 and the external thread protective sleeve 04 are provided with two notches on the edge of the top plate for installation and disassembly, and the materials of the internal thread protective sleeve 03 and the external thread protective sleeve 04 are selected to be the same as the hatch door rocker arm support product or have similar performance. The inner diameter tolerance of the hatch door rocker arm support hole is H7, and the outer diameter tolerance of the internal thread protective sleeve 03 is selected to be h6. This matching tolerance can ensure that the internal thread protective sleeve 03, the external thread protective sleeve 04 and the rocker arm support hole are matched and installed.

[0037] The method of using the protection tool is as follows:

[0038] like Fig.13 As shown, there are currently two rocker arm support locating holes on the inspection tooling, and the protection tool is manufactured and installed in two groups, which are installed correspondingly at the two rocker arm support locating hole positions on the inspection tooling card board. The outer dimensions of the base assembly 01 in each group are set according to the installation position; Fig.11 , Fig.12 As shown, the latch assembly 02 is installed on the base assembly 01, and the two groups of latch assemblies 02 are fixedly installed on the end faces of the fork ears in the two groups of base assemblies 01 in opposite directions by tightening the bolts 02-04, so as to ensure that the latch assembly 02 can move normally; the two groups of base assemblies 01 are installed on the inspection fixture pallet using a laser tracker, the axis and surface position of the base assembly 01 are determined, and the cylindrical pins 01-03 are used to locate them, and the bolts 01-02 are used to fix them; the latch 02-01 is retracted into the guide seat 02-02.

[0039] like Fig.10 As shown, after the internal threaded protective sleeve 03 and the external threaded protective sleeve 04 are inserted into the holes of the rocker arm support from both sides, the external threaded protective sleeve 04 is screwed into the internal threaded protective sleeve 03 so that the lower end surfaces of the top plates of the two are in contact with the outer surfaces on both sides of the rocker arm support hole; the hatch equipped with the internal threaded protective sleeve 03 and the external threaded protective sleeve 04 is hoisted to the inspection tooling, the hatch rocker arm support equipped with the internal threaded protective sleeve 03 and the external threaded protective sleeve 04 is placed in the fork ear of the base assembly 01 and falls into the inner side of the fork ear, the pin 02-01 is extended from the guide seat 02-02, inserted into the inner holes of the internal threaded protective sleeve 03, the external threaded protective sleeve 04 and the inner hole of the shoulder bushing 01-04, and the hatch is positioned.

[0040] By using the above method, the door rocker arm support can be protected, which can effectively avoid damage to the product and prepare for subsequent installation.

[0041] The above-described embodiments merely express the implementation methods of the present invention, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A protection tool for an aircraft door rocker arm support, characterized in that: The protection tool comprises a base assembly (01), a latch assembly (02), an internal thread protection sleeve (03), and an external thread protection sleeve (04); The base assembly (01) comprises a support (01-01), a bolt (01-02), a cylindrical pin (01-03), and a shoulder bushing (01-04); the support (01-01) is a plate-like structure with a fork ear at one end, and its bottom is positioned in a positioning hole on the inspection tooling card plate through a cylindrical pin (01-03), and is connected to the inspection tooling frame through a bolt (01-02); the fork ears on the support (01-01) have coaxial circular through grooves, and are all equipped with shoulder bushings (01-04), the inner diameter of the shoulder bushing (01-04) matches the outer diameter of the small diameter section of the latch (02-01) in the latch assembly (02), and the distance between the fork ears is greater than the thickness of the door rocker arm support product; The latch assembly (02) comprises a latch (02-01), a guide seat (02-02), a guide screw (02-03), and a tightening bolt (02-04); the latch (02-01) is a stepped shaft, the small diameter section of which is used to simulate the door shaft, and the large diameter section of which is provided with a threaded hole on the side for installing the guide screw (02-03); the guide seat (02-02) is a cylinder with a boss on the bottom circumference, and the inner diameter of the cylinder matches the large diameter section of the latch (02-01), so that the latch (02-01) can slide in the cylinder, and the cylinder wall A "C"-shaped guide groove is formed along the length direction, and the latch pin (02-01) passes through the "C"-shaped guide groove and is screwed into the threaded hole on the side of the latch pin (02-01). The latch pin (02-01) moves along the "C"-shaped guide groove, thereby realizing that the latch pin (02-01) extends or retracts in the guide seat (02-02); the boss at the bottom of the cylinder body is installed on the outer end surface of the fork ear on one side of the support (01-01) in the base assembly (01) by tightening the bolt (02-04), and the latch pin (02-01) passes through the inner hole of the shoulder bushing (01-04); The internal thread protective sleeve (03) and the external thread protective sleeve (04) are both cylinders with a flat plate on the top. The external thread protective sleeve (04) is formed with an external thread and an axial through hole. The through hole diameter matches the small diameter section of the plug pin (02-01). The external diameter of the internal thread protective sleeve (03) matches the hole diameter of the rocker arm support. The length of the cylinder is not greater than the thickness of the rocker arm support hole. The axial direction is formed with a stepped through hole. The inner diameter of the small diameter section of the stepped through hole matches the small diameter section of the plug pin (02-01). The large diameter section is formed with an internal thread, which matches the external thread of the external thread protective sleeve (04). The depth of the large diameter section is The length of the internal thread protective sleeve (03) and the external thread protective sleeve (04) is greater than the length of the external thread of the external thread protective sleeve (04); after the internal thread protective sleeve (03) and the external thread protective sleeve (04) are inserted into the mounting holes of the rocker arm support from both sides, the external thread protective sleeve (04) is screwed into the internal thread protective sleeve (03) so that the lower end surfaces of the top plates of the two are in contact with the outer surfaces of the two sides of the rocker arm support hole, the installed internal thread protective sleeve (03) and the external thread protective sleeve (04) are inserted between the fork ears of the support (01-01), and the latch (02-01) is inserted into the inner holes of the two, so as to realize the positioning and connection of the hatch door and the inspection tooling.

2. The aircraft door rocker support protection tool according to claim 1, characterized in that: The outer dimensions of the support (01-01) are set according to the actual installation position.

3. The aircraft door rocker support protection tool according to claim 1, characterized in that: The base assembly (01) further comprises an adjustment seat (01-05) which is a plate-shaped structure and is installed at the bottom of the support (01-01) and is used to adjust the posture of the base assembly (01) during installation.

4. The aircraft door rocker support protection tool according to claim 1, characterized in that: The latch (02-01), the internal thread protective sleeve (03) and the external thread protective sleeve (04) are made of the same material as the door rocker arm support product.

5. The aircraft door rocker support protection tool according to claim 1, characterized in that: Two notches are provided on the top flat plate edges of the internal thread protection sleeve (03) and the external thread protection sleeve (04) for installation and removal.

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