Helicopter tail beam connector drilling and reaming device

Abstract

The utility model provides a drilling and reaming device for a helicopter tail beam connector. The device comprises a frame, a drilling device and a reaming device, the fixing assembly is arranged on the frame, and the fixing assembly can fix the frame on a tail beam of the helicopter; the drilling assembly is arranged on the frame, and the drilling assembly is matched with a fork lug connector on the tail beam of the helicopter; the device provided by the utility model is high in precision, can ensure the aperture, the pitch and the coaxiality when being used for drilling and reaming holes, is convenient and simple to operate, can be operated by both men and women, and greatly improves the product percent of pass and the working efficiency.

Description

Technical Field

[0001] The present application belongs to the technical field of helicopter machining, and in particular relates to a drilling and reaming device for a helicopter tail boom joint. Background Art

[0002] The helicopter's tail boom and diagonal beam are butt-jointed for assembly. The tail boom's butt joint consists of two upper and lower joints, each with left and right fork ears. The diagonal beam also has two upper and lower joints, each with left and right single ears. During butt assembly, the single ear flats of the diagonal beam's upper and lower joints must be inserted into the fork ear slots of the tail boom's upper and lower joints. Bolts are then used to connect the holes in the diagonal beam's single ear flats to the holes in the tail boom's fork ear flats, and finally, nuts are tightened to secure. The tail boom's fork ear holes require an H7-grade tolerance and 0.03mm coaxiality, placing extremely high demands on assembly.

[0003] Machining Difficulties: The fork holes in the upper and lower tail boom joints must meet H7 precision and strict tolerances. Exceeding these tolerances will prevent bolt assembly clearance. Furthermore, the coaxiality of the holes on both sides of the fork lugs must be maintained; otherwise, the bolt holes will not be able to pass through the upper and lower surfaces of the fork lugs during tail boom assembly. Manual reaming, a complex and difficult operation for operators on helicopters, makes it difficult to meet these requirements. To meet production demands and ensure work progress, a tail boom joint drilling and reaming device was designed to address this issue. Utility Model Content

[0004] Purpose of the invention: To provide a tail boom joint drilling device that can realize tail boom joint drilling on a helicopter without disassembling the tail boom, thereby improving production efficiency, having a novel design, accurate positioning, easy operation and durability.

[0005] The present application provides a helicopter tail boom joint drilling and reaming device, the device comprising:

[0006] frame;

[0007] A fixing assembly is provided on the frame, and the fixing assembly is capable of fixing the frame on the tail boom of the helicopter;

[0008] A drilling assembly is provided on the frame, and the drilling assembly is matched with the fork ear joint on the helicopter tail boom.

[0009] Preferably, the framework comprises:

[0010] A rectangular frame with a border;

[0011] A mounting plate is provided on the rectangular frame, and is used for mounting the drilling assembly; wherein the width of the mounting plate is greater than the width of the frame.

[0012] Preferably, the fixing assembly comprises:

[0013] A first fixing component is provided on the frame;

[0014] A second fixing component is provided on the frame; wherein the first fixing component and the second fixing component are capable of clamping the skin on both sides of the helicopter tail boom, and the first fixing component and the second fixing component are identical;

[0015] The third fixing component is arranged on the frame, and the third fixing component is connected to the bolts of the center reduction joint of the helicopter tail boom platform.

[0016] Preferably, the first fixing component includes:

[0017] A pillar, one end of which is connected to the frame;

[0018] a support, disposed at the other end of the support;

[0019] A clamping plate is connected to the support, and the clamping plate can clamp the skin on both sides of the helicopter tail boom.

[0020] Preferably, the third fixing component includes:

[0021] An L-shaped column, one end of which is connected to the frame;

[0022] a connecting plate connected to the other end of the L-shaped column;

[0023] The center drop joint positioning piece is connected to the connecting plate, and the center drop joint positioning piece is connected to the bolts of the center drop joint of the helicopter tail boom platform.

[0024] Preferably, the drilling assembly comprises:

[0025] a fork ear support, disposed on the mounting plate;

[0026] The tail boom joint positioning piece is arranged on the fork ear support, and the tail boom joint positioning piece is connected to the helicopter tail boom fork ear joint.

[0027] Preferably, the drilling assembly further comprises:

[0028] a locating pin for connecting the tail boom joint locating piece to the helicopter tail boom fork ear joint;

[0029] The open gasket is used to adjust the gap between the tail boom joint positioning piece and the helicopter tail boom fork ear joint.

[0030] Beneficial technical effects of this application:

[0031] Without removing the tail boom, operators can operate the helicopter, both indoors and outdoors, regardless of the environment. Furthermore, the device boasts high precision, ensuring guaranteed hole diameter, spacing, and coaxiality when drilling and reaming. It is easy to operate and can be operated by both male and female employees, significantly improving product qualification rates and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a structural schematic diagram of a helicopter tail boom joint drilling and reaming device provided in an embodiment of the present application;

[0033] Figure 2 This is a diagram showing the use of a helicopter tail boom joint drilling and reaming device provided in an embodiment of the present application;

[0034] Figure 3 This is a schematic structural diagram of a tail boom gauge provided in an embodiment of the present application;

[0035] Figure 4 This is a schematic diagram of the structure of a part clamped to a fuselage provided in an embodiment of the present application;

[0036] Figure 5 This is a partial structural diagram of a helicopter tail boom joint drilling and reaming device provided in an embodiment of the present application;

[0037] Among them, 1-tail beam gauge; 2-tail beam joint positioning piece; 3-fork ear support; 4-L-shaped column; 5-first center reduction joint positioning piece; 6-second center reduction joint positioning piece; 7-connecting plate; 8-clamping plate; 9-support; 10-locating pin; 11-opening gasket. DETAILED DESCRIPTION

[0038] The present application provides a helicopter tail boom joint drilling device, which consists of a tail boom gauge, a tail boom joint positioning piece, an L-shaped column, a center reduction joint positioning piece 1, a center reduction joint positioning piece 2, a connecting plate, a clamping plate, a support, a positioning pin, and an opening gasket.

[0039] The above-mentioned "tail boom gauge" consists of a base and two joints. The size and position of the two joints are consistent with the upper and lower joints of the helicopter's tail boom. This part is used to locate the position of the "tail boom joint locator" on the device when manufacturing the device. The "tail boom joint locator" is used to match the upper and lower fork ear joints of the helicopter's tail boom. The above-mentioned "L-shaped column" is the base of the device. The "tail boom joint locator" is screwed to the "fork ear support". By adjusting the tightness of the connecting bolts, the "tail boom joint locator" can be swung left and right on the "fork ear support". When in use, the "clamps" at both ends of the device are clamped on both sides of the tail boom skin, and then the "tail boom joint locator" is connected to the four fork ear joints above and below the tail boom. Finally, the "center reduction joint locator" is fixed to the bolts of the center reduction joint, and the device is installed.

[0040] There are 4 fork ear holes in the upper and lower joints of the tail boom. When it is necessary to drill a hole for the fork ear joint, use the "joint hole locating pin" and insert it into the other 3 fork ear holes that do not need to be drilled or reamed. At the fork ear that needs to be drilled and reamed, insert a guide sleeve of the corresponding specification hole into the hole of the "tail boom joint locating piece" device, and then drilling and reaming can be carried out.

[0041] like Figure 1 As shown, the tooling consists of a tail beam gauge 1, a tail beam joint positioning piece 2, a fork ear support 3, an L-shaped column 4, a first center reduction joint positioning piece 5, a second center reduction joint positioning piece 6, a connecting plate 7, a clamping plate 8, a support 9, a positioning pin 10, and an opening gasket 11.

[0042] like Figure 2 As shown: The fixture is clamped to the ends of the tail boom's outer skin using a clamping plate. The center-reducing joint locating piece is then inserted into the center-reducing joint bolts to secure the fixture. This secures the fixture to the aircraft's tail boom both along and perpendicular to the aircraft's course. This assembly method is stable and secure, preventing loosening. Finally, the tail-reducing joint locating piece is aligned with the fork-ear joint on the tail boom, and the joint hole locating pins and washers are then used to tighten the drilled holes.

[0043] like Figure 3 As shown, the tail boom gauge's end lugs replicate the size and position of the aircraft's tail boom lugs. During the manufacture of this tooling, the tail boom gauge is used to coordinate the position of the "tail boom joint locator." This advantage is that the tail boom gauge can be used to manufacture this device without disassembling the aircraft's tail boom; mass production can be achieved using only the tail boom gauge, making it a key component in the device's manufacturing.

[0044] like Figure 4 As shown, the L-shaped column 4 forms the base of the device, designed as a hollowed-out frame. This reduces weight. Brackets 9 connect the clamps 8 to the frame. Clamps 8 clamp onto the tail boom's outer skin, securing the fixture to the tail boom perpendicular to its course. The center-reduction joint locators 5 and 6 are connected to the L-shaped column 4 via a connecting plate 7. Holes in these locators pass through bolts on the tail boom platform's center-reduction joint, securing the fixture to the tail boom along its course. This device's mounting method is simple, secure, and convenient, eliminating the risk of loosening or falling.

[0045] like Figure 5As shown, the four tail reduction joint locators 2 are connected to the L-shaped column 4 via the fork ear supports 3. The base plate portion connecting the fork ear supports 3 to the L-shaped column 4 is designed to be welded to facilitate device manufacturing. The base plate is designed to be larger than the bottom frame of the L-shaped column to make the base support of the fork ear supports 3 more stable without affecting the device's mitigation function. The tail reduction joint locators 2 are designed with double fork ears to allow the fork ears of the tail boom joint to be inserted into the double fork ear grooves. Opening gaskets 11 are also installed to reduce the assembly gap of the fork ears. The tail reduction joint locators 2 and the fork ear supports 3 are designed to be bolted together to allow the tail reduction joint locators 2 to move freely in the left and right directions of the heading by adjusting the tightness of the bolts, facilitating the assembly and disassembly of the device. The tail reduction joint locators 3 are assembled with the fuselage tail boom joint, and then the locating pins 10 are inserted to connect them. The assembly gasket is pressed tightly. The position of the tail reduction joint locators 3 on the device is determined by the tail boom gauge 1 in conjunction with the processing.

[0046] The above is the determination of the design basis and relevant dimensions of the positioning tool.

[0047] In a feasible implementation method, the method of using the present application is as follows: clamp the device clamping plate 8 on both sides of the tail boom skin to locate the vertical heading position so that the device cannot move left or right in the heading, and then insert the center reduction joint positioning members 5 and 6 into the bolts of the center reduction joint to fix the heading position. Insert the double fork ear grooves of the tail boom joint positioning member 2 in the device into the fork ear slots of the fuselage tail boom fork ear joint, insert the positioning pins 10 into the holes to fix them, and then install the opening gasket to adjust the gap of the fork ear slots, and finally tighten the positioning pins 10. There are 4 fork ear holes in the upper and lower joints of the tail boom. When it is necessary to drill a hole for the fork ear joint, use the positioning pin 10 to insert it into the other 3 fork ear holes that do not need to be drilled and hinged. At the fork ear where the hole needs to be drilled and hinged, insert the guide sleeve of the corresponding specification hole into the hole of the tail boom joint positioning member 2 of the device, and then drilling and reaming can be carried out.

Claims

1. A drilling and reaming device for a helicopter tail boom joint, characterized in that: The device comprises: frame; A fixing assembly is provided on the frame, and the fixing assembly is capable of fixing the frame on the tail boom of the helicopter; A drilling assembly is provided on the frame, and the drilling assembly is matched with the fork ear joint on the helicopter tail boom.

2. The device according to claim 1, characterized in that The framework includes: A rectangular frame with a border; A mounting plate is provided on the rectangular frame, and is used for mounting the drilling assembly; wherein the width of the mounting plate is greater than the width of the frame.

3. The device according to claim 2, characterized in that The fixing assembly includes: A first fixing component is provided on the frame; A second fixing component is provided on the frame; wherein the first fixing component and the second fixing component are capable of clamping the skin on both sides of the helicopter tail boom, and the first fixing component and the second fixing component are identical; The third fixing component is arranged on the frame, and the third fixing component is connected to the bolts of the center reduction joint of the helicopter tail boom platform.

4. The device according to claim 3, characterized in that The first fixing component includes: A pillar, one end of which is connected to the frame; a support, disposed at the other end of the support; A clamping plate is connected to the support, and the clamping plate can clamp the skin on both sides of the helicopter tail boom.

5. The device according to claim 3, characterized in that The third fixing component includes: An L-shaped column, one end of which is connected to the frame; a connecting plate connected to the other end of the L-shaped column; The center drop joint positioning piece is connected to the connecting plate, and the center drop joint positioning piece is connected to the bolts of the center drop joint of the helicopter tail boom platform.

6. The device according to claim 2, characterized in that The drilling assembly comprises: a fork ear support, disposed on the mounting plate; The tail boom joint positioning piece is arranged on the fork ear support, and the tail boom joint positioning piece is connected to the helicopter tail boom fork ear joint.

7. The device according to claim 6, characterized in that The drilling assembly further comprises: a locating pin for connecting the tail boom joint locating piece to the helicopter tail boom fork ear joint; The open gasket is used to adjust the gap between the tail boom joint positioning piece and the helicopter tail boom fork ear joint.

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