Aluminum honeycomb floor fixing bolt assembly

Abstract

The application belongs to the technical field of aircraft structure design, and particularly relates to an aluminum honeycomb floor fixing bolt assembly which is composed of a honeycomb floor fixing nut, a fixing bolt and an equipment connecting screw rod assembly, and the bolt connecting assembly comprises: the fixing nut which is prefabricated in the honeycomb floor and has an inner thread at the upper end; the fixing bolt has large and small screw rods at the two ends; the equipment connecting screw rod assembly comprises a hollow screw rod with an inner thread; when no fixing equipment is installed, the fixing bolt is in normal position, the large screw rod part of the fixing bolt is screwed into the fixing nut of the honeycomb floor, and the fixing bolt is flush with the floor; when the equipment needs to be installed, the fixing bolt is inverted and screwed into the fixing nut of the honeycomb floor, the screw rod of the small head of the fixing bolt protrudes from the floor, and the equipment is screwed onto the screw rod of the small head of the fixing bolt of the protruding honeycomb floor by using the hollow screw rod with an inner thread and a gasket; the application can not only ensure the flatness of the floor after the equipment is dismounted, but also provide a bolt mounting interface for conveniently installing the equipment.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of aircraft structure design, and particularly relates to an aluminum honeycomb floor fixing bolt assembly. BACKGROUND

[0002] The aluminum honeycomb floor is widely used in the passenger and cargo cabin and equipment cabin of the aircraft structure due to its light weight, good rigidity and convenient connection. In addition to bearing the weight of the personnel, the aluminum honeycomb floor is also often used to place goods and install equipment. When the equipment is installed, it is often necessary to reserve a bolt connection point on the aluminum honeycomb floor. In the previous structure design, one is to preform a bowl-shaped part or a screw sleeve on the honeycomb floor, and the bolt of the equipment is connected to the structure reinforcing frame or beam through the hole of the bowl-shaped part or the screw sleeve of the honeycomb floor; the other is to preform a threaded metal inlay on the honeycomb floor, and the bolt of the equipment is connected to the inlay. Some equipment needs to be disassembled and not used under some working conditions. After the equipment is disassembled, the hole of the bowl-shaped part, the screw sleeve or the inlay is left on the honeycomb floor, and dust and sundries are easy to enter the hole, which may affect the sealing of the floor and the installation of the equipment. SUMMARY

[0003] The application aims to design an aluminum honeycomb floor fixing bolt assembly to solve the problem that the excess bowl-shaped part, screw sleeve or inlay hole of the honeycomb floor affects the sealing and flatness of the floor after the equipment is disassembled.

[0004] Technical scheme: An aluminum honeycomb floor fixing bolt assembly, the honeycomb floor bolt assembly is composed of a honeycomb floor fixing nut, a fixing bolt and an equipment connecting screw rod assembly, the bolt connection assembly comprises: a fixing nut preformed in the interior of the honeycomb floor, the upper end of the fixing nut is provided with an internal thread; the fixing bolt is provided with a large and small threaded rod at both ends; the equipment connecting screw rod assembly comprises a hollow screw rod provided with an internal thread; when the fixing equipment is not installed, the fixing bolt is in a normal position, the large screw rod part of the fixing bolt is screwed into the fixing nut of the honeycomb floor, and the fixing bolt is flush with the floor; when the equipment needs to be installed, the fixing bolt is inverted and screwed into the fixing nut of the honeycomb floor, the threaded rod of the small head of the fixing bolt protrudes out of the floor, and the equipment is screwed onto the small head threaded rod of the fixing bolt of the honeycomb floor protruding out of the floor by using the hollow screw rod provided with an internal thread and a gasket.

[0005] Further, the middle section of the fixing bolt is provided with a avoiding groove to avoid the interference between the end head of the connecting screw rod and the upper end surface of the fixing bolt, and to ensure the reliability of the equipment connection.

[0006] Further, the interior of the fixing nut is a stepped sectional cavity; the upper cavity is provided with an internal thread and cooperates with the large screw rod of the fixing bolt; and the lower cavity serves as a containing space for the small screw rod of the fixing bolt.

[0007] Further, the fixing nut is provided with a plurality of anti-pulling surfaces on the periphery to improve the stability of the fixing nut.

[0008] Further, the fixed nut is glued and fixed in the honeycomb floor through J-97 foaming glue.

[0009] Further, the center of the head of the connecting screw rod is provided with a weight-reducing groove.

[0010] Further, the end of the large screw rod is provided with a "one word" groove.

[0011] Further, the equipment connecting screw rod assembly comprises a rubber shock-absorbing gasket and a metal gasket, the metal gasket can be combined in multiple forms to adjust the gap and thickness, and the rubber shock-absorbing gasket is used for shock absorption.

[0012] The present application has the following beneficial effects: (1) when the equipment is not installed, the fixing bolt is uprightly screwed into the fixed nut of the floor and is flush with the upper surface of the floor;

[0013] (2) when the equipment is installed, the fixing bolt is invertedly screwed into the fixed nut of the floor, the small head of the fixing bolt protrudes from the floor, and the hollow connecting screw rod is used to fix the equipment on the small screw rod of the fixing bolt;

[0014] (3) the flatness of the floor after the equipment is disassembled can be ensured, and the bolt mounting interface can conveniently install the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is an installation schematic diagram of the fixing bolt assembly;

[0016] Figure 2 It is an enlarged view of the installation area;

[0017] Figure 3 It is a sectional view of the present application;

[0018] Figure 4 It is a schematic diagram of the equipment assembly process;

[0019] Figure 5 It is a state diagram of the present application when the equipment is not connected;

[0020] Wherein, 1 is an aluminum honeycomb floor, 2 is a bolt assembly, 3 is an on-board equipment, 11 is an aluminum honeycomb, 12 is an upper and lower aluminum panel, 13 is J-97 foaming glue, 21 is a fixed nut, 22 is a fixing bolt, 23 is a connecting screw rod, 24 is a gasket, and 25 is a rubber shock-absorbing gasket. DETAILED DESCRIPTION

[0021] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0022] The application provides a fixing bolt assembly for aluminum honeycomb floor, which comprises a fixing nut, a fixing bolt, a gasket and a connecting screw rod, wherein the fixing nut with internal thread is pre-fixed in the aluminum honeycomb floor, the upper end of the fixing nut is a large-diameter internal thread hole, and the lower end of the fixing nut is a small-diameter hole; the fixing bolt with a "single" slot and a threaded rod at both ends is used, the large-diameter threaded rod is used for screwing with the fixing nut in the honeycomb floor, and the small-diameter threaded rod is used for screwing with the internal thread of the connecting screw rod; the gasket and the gasket are combined to realize the installation adjustment of the equipment.

[0023] Figure 1 The application provides a fixing bolt assembly for aluminum honeycomb floor, which comprises a fixing nut, a fixing bolt, a gasket and a connecting screw rod, wherein the fixing nut with internal thread is pre-fixed in the aluminum honeycomb floor, the upper end of the fixing nut is a large-diameter internal thread hole, and the lower end of the fixing nut is a small-diameter hole; the fixing bolt with a "single" slot and a threaded rod at both ends is used, the large-diameter threaded rod is used for screwing with the fixing nut in the honeycomb floor, and the small-diameter threaded rod is used for screwing with the internal thread of the connecting screw rod; the gasket and the gasket are combined to realize the installation adjustment of the equipment. Figure 3 The application provides a fixing bolt assembly for aluminum honeycomb floor, which comprises a fixing nut, a fixing bolt, a gasket and a connecting screw rod, wherein the fixing nut with internal thread is pre-fixed in the aluminum honeycomb floor, the upper end of the fixing nut is a large-diameter internal thread hole, and the lower end of the fixing nut is a small-diameter hole; the fixing bolt with a "single" slot and a threaded rod at both ends is used, the large-diameter threaded rod is used for screwing with the fixing nut in the honeycomb floor, and the small-diameter threaded rod is used for screwing with the internal thread of the connecting screw rod; the gasket and the gasket are combined to realize the installation adjustment of the equipment. Figure 4 The application provides a fixing bolt assembly for aluminum honeycomb floor, which comprises a fixing nut, a fixing bolt, a gasket and a connecting screw rod, wherein the fixing nut with internal thread is pre-fixed in the aluminum honeycomb floor, the upper end of the fixing nut is a large-diameter internal thread hole, and the lower end of the fixing nut is a small-diameter hole; the fixing bolt with a "single" slot and a threaded rod at both ends is used, the large-diameter threaded rod is used for screwing with the fixing nut in the honeycomb floor, and the small-diameter threaded rod is used for screwing with the internal thread of the connecting screw rod; the gasket and the gasket are combined to realize the installation adjustment of the equipment.

[0024] As Figure 5 When the equipment is not needed to be installed, only the "single" screwdriver is needed to be used to screw the large-diameter threaded rod of the fixing bolt 22 into the internal thread of the fixing nut 21, the large-diameter threaded rod of the fixing bolt 22 is matched with the upper end internal thread of the fixing nut 21, the small-diameter threaded rod is hidden in the lower end internal thread of the fixing nut 21, and the upper end of the fixing bolt 22 is flush with the floor.

[0025] In this way, the threaded interface for equipment installation can be provided, and the sealing and flatness of the floor after the equipment is disassembled can be ensured.

[0026] ②Invention key point

[0027] (1) the fixed nut pre-installed in the aluminum honeycomb floor has a large-diameter threaded hole at the upper end and a small-diameter hole at the lower end, the large-diameter threaded hole is used for connecting with the large-threaded rod of the fixing bolt, and the small-diameter hole at the lower end is used for providing a hiding space for the small-threaded rod of the fixing bolt;

[0028] (2) the fixing bolt with threads at both ends has a large diameter at one end and a small diameter at the other end, and has a slot at both ends, the large-diameter threaded rod is used for screwing with the fixed nut in the honeycomb floor, and the small-diameter threaded rod is used for screwing with the internal thread of the equipment fixing rod;

[0029] (3) when the equipment is not needed to be installed, the fixing bolt is screwed into the fixed nut in the normal position, and the small-threaded head of the fixing bolt is hidden in the hole at the lower end of the fixed thread; when the equipment needs to be installed, the fixing bolt is screwed into the fixed nut in the inverted position, and the small-diameter threaded rod head protrudes from the floor;

[0030] The above is only a specific embodiment of the present application, and the present application is described in detail, and the part not described in detail is a conventional technology. However, the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. The protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An aluminum honeycomb floor fixation bolt assembly, characterized by, The honeycomb floor bolt assembly is composed of a honeycomb floor fixing nut, a fixing bolt and a device connecting screw rod assembly, the fixing bolt comprises: a fixing nut precast in the honeycomb floor, the upper end of the fixing nut is provided with internal threads; the two ends of the fixing bolt are large threaded rods; the device connecting screw rod assembly comprises a hollow screw rod with internal threads; when the fixing device is not installed, the fixing bolt is in a normal position, the large screw rod part of the fixing bolt is screwed into the fixing nut of the honeycomb floor, and the fixing bolt is flush with the floor; when the device needs to be installed, the fixing bolt is inverted and screwed into the fixing nut of the honeycomb floor, the threaded rod of the small head of the fixing bolt protrudes from the floor, and the device is screwed onto the small head threaded rod of the fixing bolt of the protruding honeycomb floor by using the hollow screw rod with internal threads and the gasket; The upper end of the fixing nut precast in the aluminum honeycomb floor is a large-diameter internal threaded hole, and the lower end is a small-diameter hole, the large-diameter internal threaded hole is used for connecting with the large threaded rod of the fixing bolt, and the small-diameter hole at the lower end is used for providing a hiding space for the small threaded rod of the fixing bolt; the fixing bolt with threads at both ends has one end with a large diameter and the other end with a small diameter, the large-diameter threaded rod is used for screwing with the fixing nut in the honeycomb floor, and the small-diameter threaded rod is used for screwing with the internal threads of the device fixing screw rod; The internal part of the fixing nut is a stepped segmented cavity; the upper cavity is provided with internal threads and cooperates with the large screw rod of the fixing bolt; the lower cavity serves as a containing space for the small screw rod of the fixing bolt.

2. The aluminum honeycomb floor anchor bolt assembly of claim 1, wherein, A plurality of anti-pulling surfaces are arranged on the periphery of the fixing nut to improve the stability of the fixing nut.

3. The aluminum honeycomb floor anchor bolt assembly of claim 2, wherein, The fixing nut is glued and fixed in the honeycomb floor by J-97 foaming glue.

4. The aluminum honeycomb floor anchor bolt assembly of claim 1, wherein, The middle section of the fixing bolt is provided with a avoiding slot to avoid interference between the end head of the connecting screw rod and the upper end surface of the fixing bolt after the connecting screw rod is fixed, and to ensure the reliability of the device connection.

5. The aluminum honeycomb floor anchor bolt assembly of claim 1, wherein, A weight-reducing groove is formed in the center of the head of the connecting screw rod.

6. The aluminum honeycomb floor anchor bolt assembly of claim 1, wherein, The large threaded rod of the fixing bolt is provided with a T-shaped groove at the end.

7. The aluminum honeycomb floor anchor bolt assembly of claim 1, wherein, The device connecting screw rod assembly further comprises a rubber shock-absorbing gasket and a metal gasket.

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