CN216332704U - Light helicopter truss with shock-proof effect - Google Patents

Abstract

The utility model relates to the technical field of helicopter accessories, in particular to a light helicopter truss with a shock absorption effect, which comprises two groups of bearing frames and mounting frames, wherein the two groups of bearing frames are symmetrically mounted on a cross beam of the mounting frames, and the bearing frames comprise: the shock-absorbing device comprises a hoisting head, two shock-absorbing rods, two bearing rods and a connector, wherein the two shock-absorbing rods are symmetrically welded at the bottom end of the hoisting head; the bearing rod is movably connected to the tail end of the shock absorbing rod through a screw rod; one end of the connector is welded on the cross beam of the mounting frame, and the other end of the connector is fixedly connected with the bearing rod through the arranged bolt. This light-duty helicopter truss with effect of moving away to avoid possible earthquakes effectively reduces the collision that produces when moving away to avoid possible earthquakes the pole and accept rigid contact between the pole to and the burden of truss, make whole truss maintain stably, reduce the cracked risk of truss welding department.

Description

Light helicopter truss with shock-proof effect

Technical Field

The utility model relates to the technical field of helicopter accessories, in particular to a light helicopter truss with a shock absorption effect.

Background

Currently, most of the light helicopter accessories are mounted on trusses, which are widely used in mechanical engineering to reduce the consumption of the materials used and to reduce the weight of the structure, in order to relatively reduce the operating loads to which the helicopter is subjected externally, the truss structure being a system of bars, the truss being formed by rectilinear bars connected in a geometrically constant system at nodes where the loads are applied.

A common truss structure consists of triangular shapes, and since the rods are more effective than fractures in compression tension, loads are applied to the truss at the connection points of the rods, and the truss elements are rigidly welded to each other.

However, in the flying process of the helicopter, the fuselage shakes a lot compared with other types of airplanes, the rigid welding point has poor damping effect, cracks are easy to generate, regular maintenance is needed, and the helicopter is inconvenient to use. In view of this, we propose a lightweight helicopter truss with shock absorption.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a light helicopter truss with a shock-absorbing effect, so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a light-duty helicopter truss with effect of moving away to avoid possible earthquakes, includes load frame and mounting bracket, just load frame is provided with two sets ofly, and the symmetry is installed on the crossbeam of mounting bracket, load frame includes: the shock-absorbing device comprises a hoisting head, two shock-absorbing rods, two bearing rods and a connector, wherein the two shock-absorbing rods are symmetrically welded at the bottom end of the hoisting head; the bearing rod is movably connected to the tail end of the shock absorbing rod through a screw rod; one end of the connector is welded on the cross beam of the mounting frame, and the other end of the connector is fixedly connected with the bearing rod through the arranged bolt.

Preferably, the hoisting head is provided with a hoisting hole, and the hoisting hole is used for being fixedly hoisted with the helicopter body.

Preferably, the end of the shock-absorbing rod is provided with a movable groove, the end of the movable groove is communicated with the outside through a jack, a threaded sleeve is movably connected in the movable groove, and the screw rod is inserted into the movable groove through the jack and is in threaded connection with the threaded sleeve.

Preferably, the threaded sleeve is movably connected with the top wall of the movable groove through a set spring.

Preferably, the inner diameter of the movable groove is larger than the diameter of the insertion hole.

Preferably, the end of the shock absorbing rod is provided with a first insection, the end of the bearing rod 13 is provided with a second insection, and the first insection is engaged with the second insection.

Preferably, a triangular welding piece is arranged on the connecting head.

Compared with the prior art, the utility model has the beneficial effects that: this light-duty helicopter truss with effect of moving away to avoid possible earthquakes, because the tip of accepting the pole connects on the threaded sleeve pipe in the pole movable groove of moving away to avoid possible earthquakes through the screw rod soon, in the way that the helicopter jolted the flight, the screw rod vibrates from top to bottom, makes threaded sleeve pipe compression movable inslot's spring to this collision that produces when effectively reducing the pole of moving away to avoid possible earthquakes and accepting the rigid contact between the pole to and the burden of truss, make whole truss maintain stably, reduce the cracked risk of truss welding department.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a structural schematic diagram of the force-bearing frame in the utility model;

FIG. 3 is an enlarged view of the structure of FIG. 2;

FIG. 4 is a schematic view of the end structure of the shock absorbing rod of the present invention;

FIG. 5 is a schematic view of the connection structure of the adapting rod and the connecting head of the present invention.

In the figure: 1. a bearing frame; 11. hoisting the head; 111. hoisting holes; 12. a shock absorbing rod; 121. a movable groove; 122. a jack; 123. a threaded bushing; 124. a spring; 125. a first insection; 13. a bearing rod; 131. a screw; 132. a second insection; 14. a connector; 141. a bolt; 142. triangular welding sheets; 2. and (7) mounting frames.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "diameter", "inner diameter", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1-5, a technical solution provided by the present invention is:

the utility model provides a light-duty helicopter truss with effect of moving away to avoid possible earthquakes, includes load frame 1 and mounting bracket 2, and load frame 1 is provided with two sets ofly, and the symmetry is installed on the crossbeam of mounting bracket 2, and load frame 1 includes: the device comprises a hoisting head 11, two shock-absorbing rods 12, two bearing rods 13 and a connector 14, wherein the two shock-absorbing rods 12 are symmetrically welded at the bottom end of the hoisting head 11; the bearing rod 13 is movably connected with the tail end of the shock absorbing rod 12 through a screw 131; one end of the connector 14 is welded on the cross beam of the mounting frame 2, and the other end is connected and fixed with the bearing rod 13 through a bolt 141. The impact generated when the shock absorbing rod 12 is in rigid contact with the bearing rod 13 can be effectively reduced through the bearing rod 13 in movable connection, and the load of the truss is reduced in the process of bumping and flying of the helicopter, so that the whole truss is kept stable, and the risk of fracture of the welding position of the truss is reduced.

It is worth to be noted that the hoisting head 11 is provided with the hoisting hole 111, and the hoisting hole 111 is used for being fixedly hoisted with the body of the helicopter, and in this embodiment, the hoisting hole 111 is fixedly connected with the body of the helicopter through a bolt, so that the flight device for the helicopter mounted on the mounting frame 2 is conveniently placed in the body.

Further, the end of the shock absorbing rod 12 is provided with a movable groove 121, the end of the movable groove 121 is communicated with the outside through an insertion hole 122, a threaded sleeve 123 is movably connected in the movable groove 121, and the screw 131 is inserted into the movable groove 121 through the insertion hole 122 and is in threaded connection with the threaded sleeve 123. The adapting rod 13 is fixed at the end of the shock absorbing rod 12 through the screw 131, and the threaded sleeve 123 is movably connected in the movable groove 121 of the shock absorbing rod 12, so that a certain telescopic space exists between the adapting rod 13 and the shock absorbing rod 12, and the rigid contact is prevented from being broken.

It should be noted that, the threaded sleeve 123 is movably connected to the top wall of the movable groove 121 through the arranged spring 124, the spring 124 has good elastic recovery capability, and can elastically support the threaded sleeve 123, so that the threaded sleeve 123 can move in the movable groove 121 conveniently, and in this embodiment, the spring 124 can also be replaced by a rubber sleeve, and the inner diameter of the rubber sleeve is larger than the diameter of the screw 131.

In addition, the inner diameter of the movable groove 121 is larger than the diameter of the insertion hole 122, preventing the threaded sleeve 123 from falling out of the movable groove 121.

It should be noted that the end of the shock absorbing rod 12 is provided with a first insection 125, the end of the receiving rod 13 is provided with a second insection 132, and the first insection 125 is engaged with the second insection 132, so that the friction between the engaging surfaces of the shock absorbing rod 12 and the receiving rod 13 can be increased by the first insection 125 and the second insection 141, and the connection of the receiving rod 13 is more stable.

Specifically, the connector 14 is provided with a triangular welding piece 142, and the triangular welding piece 142 can increase the welding area between the connector 14 and the cross beam of the mounting frame 2, so that the welding is stable.

Furthermore, in the embodiment, the bearing frame 1 and the mounting frame 2 are integrally made of chromium-molybdenum AISI4130 alloy material, and compared with the traditional steel AISI4130 alloy, the material does not reduce the performance of the product, and meanwhile, the advantage that the subsequent heat treatment of the truss welding line is not needed after the assembly is also achieved.

When the light helicopter truss with the shock absorption effect is used, the bearing frame 1 is integrally hung in the helicopter body through the hoisting head 11, the bearing frame 1 is fixed on a cross beam of the mounting frame 2 through the shock absorption rod 12, the bearing rod 13 and the connecting head 14, the end part of the bearing rod 13 is screwed on the threaded sleeve 123 in the movable groove 121 of the shock absorption rod 12 through the screw rod 131, the screw rod 131 vibrates up and down in the process of bumping and flying of the helicopter, the threaded sleeve 123 compresses the spring 124 in the movable groove 121, and therefore the collision generated when rigid contact is conducted between the shock absorption rod 12 and the bearing rod 13 is effectively reduced, the load of the truss is reduced, the whole truss is kept stable, and the risk of fracture of a truss welding position is reduced.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a light-duty helicopter truss with effect of moving away to avoid possible earthquakes, includes load frame (1) and mounting bracket (2), just load frame (1) is provided with two sets ofly, and the symmetry is installed on the crossbeam of mounting bracket (2), its characterized in that, load frame (1) includes: a hoisting head (11), a shock absorbing rod (12), a bearing rod (13) and a connecting head (14), wherein,

two shock-absorbing rods (12) are symmetrically welded at the bottom end of the hoisting head (11);

the bearing rod (13) is movably connected to the tail end of the shock absorbing rod (12) through a screw rod (131);

one end of the connector (14) is welded on the cross beam of the mounting rack (2), and the other end of the connector is fixedly connected with the bearing rod (13) through the arranged bolt (141).

2. The lightweight helicopter truss with shock absorption effect of claim 1 further characterized by: hoisting holes (111) are formed in the hoisting head (11), and the hoisting holes (111) are used for being fixedly hoisted with a helicopter body.

3. The lightweight helicopter truss with shock absorption effect of claim 1 further characterized by: the tail end of the shock absorbing rod (12) is provided with a movable groove (121), the end part of the movable groove (121) is communicated with the outside through an insertion hole (122), a threaded sleeve (123) is movably connected in the movable groove (121), and the screw rod (131) is inserted into the movable groove (121) through the insertion hole (122) and is in threaded connection with the threaded sleeve (123).

4. The lightweight helicopter truss with shock absorption effect of claim 3 wherein: the threaded sleeve (123) is movably connected with the top wall of the movable groove (121) through a set spring (124).

5. The lightweight helicopter truss with shock absorption effect of claim 3 wherein: the inner diameter of the movable groove (121) is larger than the diameter of the insertion hole (122).

6. A lightweight helicopter truss with shock absorption according to any of claims 3-5 wherein: the end part of the shock absorbing rod (12) is provided with a first insection (125), the end part of the bearing rod (13) is provided with a second insection (132), and the first insection (125) is meshed with the second insection (132).

7. The lightweight helicopter truss with shock absorption effect of claim 1 further characterized by: a triangular welding piece (142) is arranged on the connecting head (14).

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