CN211193664U

CN211193664U - Special wrench for fixing bolts of mounting support of helicopter main speed reducer

Info

Publication number: CN211193664U
Application number: CN201921852933.8U
Authority: CN
Inventors: 瞿德锋; 谢锡海; 姜峰
Original assignee: Chengdu Guoying Jinjiang Machine Factory
Current assignee: Chengdu Guoying Jinjiang Machine Factory
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-08-07
Anticipated expiration: 2029-10-31

Abstract

The utility model relates to a special spanner for fixing helicopter main reducing gear mounting support bolt, which comprises a spanner head and a bent handle. A certain type helicopter need decompose main reducer erection support and inspect at the repair in-process, and the back is accomplished in the inspection, when installation main reducer erection support, need install 16 bolts, uses the spanner have great application of force space, the arm of force is longer, it is not only convenient but also laborsaving to use.

Description

Special wrench for fixing bolts of mounting support of helicopter main speed reducer

Technical Field

The utility model relates to a manual repair tools field, concretely relates to fixed special spanner of helicopter main reducing gear erection support bolt.

Background

The wrench is a common mounting and dismounting tool, and is a manual tool for screwing bolts, screws, nuts and other screw threads to tightly hold open or trepanning fasteners of the bolts or nuts by utilizing the lever principle. The wrench is typically made of structural steel of carbon or alloy material. The 108858003a patent discloses a wrench that is difficult to apply in certain use situations due to its overall vertical configuration. If the utility model relates to a certain type helicopter need decompose main reducer erection support and inspect in the repair process, the inspection is accomplished the back, when installing main reducer erection support, need fasten 16 bolts, the restriction that receives fuselage structure lower part space during the construction bolt leads to the installation inconvenient, and the bolt installation is screwed up the moment great, need grind thin sleeve and just can use when using conventional box spanner, it is thin to cause the sleeve section of thick bamboo wall, often fracture in the use, and be difficult to fix, thereby cause construction bolt intensity of labour shortcoming such as big, production efficiency hangs down.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a certain type helicopter is not suitable for an ordinary wrench when installing a main reducing gear installing support. To above problem, the utility model provides a helicopter main reducing gear erection support bolt fastening special spanner.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a special wrench for fixing a bolt of a mounting support of a main reducer of a helicopter comprises a bent handle and a wrench head, wherein the bent handle is connected with the wrench head.

In any of the above schemes, preferably, the handle of the bent handle and the wrench head are bent by 90 degrees, and when the bolt is fixed, a larger force application space exists, the force arm is longer, and the use is more convenient.

In any of the above schemes, preferably, the wrench is made of 45A steel, so that the wrench has sufficient strength and rigidity as a whole.

In any of the above solutions, it is preferable that the wrench head is provided with a U-shaped groove.

In any of the above schemes, preferably, the wrench head is provided with two fixed wrench lips, a wrench lip a and a wrench lip B.

In any of the above embodiments, it is preferred that the wrench head and the twist grip handle are connected by a wrench neck.

In any of the above solutions, it is preferable that the U-shaped groove has a length of 17-22mm and a height of 10mm, and the rounded radii of the two bottom corners are R2.

In any of the above schemes, it is preferable that the length of the pulling lip A is 3-6mm, and the length of the pulling lip B is 3-8 mm.

In any of the above solutions, it is preferable that the wrench head is 20mm high.

In any of the above solutions, it is preferable that the radius of the rounded corner at the connection between the wrench head and the wrench neck is 2 × R3, and the length of the wrench neck is 14-16 mm.

In any of the above schemes, the length of the wrench neck is 16mm, the radius of the round corner at the connection part of the wrench neck and the handle of the bent handle is R10, and the handle of the bent handle is 90mm long and 12-14mm high.

In any of the above embodiments, preferably, the wrench is 80mm high as a whole.

In any of the above schemes, preferably, the number of the wrenches is 4, and the wrenches are different in size and specification and are respectively used for fixing 4 main reducer mounting support bolts with left back, right back, left front and right front.

The utility model has the advantages that: maintenance workman uses when installing certain type helicopter main reducer erection support the spanner arm of force longer, use more laborsaving, can not receive fuselage structure's influence simultaneously, the application of force of being convenient for.

Drawings

Fig. 1 is a schematic structural view of a preferred embodiment of a special wrench for bolt fastening of a mounting support of a helicopter main reducer according to the present invention;

fig. 2 is a schematic structural view of another embodiment of a special wrench for bolt fastening of a mounting support of a helicopter main reducer according to the present invention;

fig. 3 is a schematic structural view of another embodiment of a special wrench for bolt fastening of a mounting support of a helicopter main reducer according to the present invention;

fig. 4 is a schematic structural view of another embodiment of a special wrench for bolt fastening of a mounting support of a helicopter main reducer according to the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-bending handle, 2-wrench head, 3-lip A, 4-lip B, 5-U-shaped groove,

6-spanner neck.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Example 1

As shown in fig. 1 and 2, a wrench special for fixing bolts of a mounting support of a helicopter main reducer comprises a wrench head 2 and a bent handle 1.

In this embodiment, the wrench head 2 and the bent handle 1 are connected through a wrench neck 6, two round corners are arranged at the joint of the joint, and two bottom corners of the wrench head 2 are right angles.

In this embodiment, the handle 1 and the wrench neck 6 are bent at 90 degrees, two round corners are arranged at the joint, and two corners at the tail end of the handle 1 are right angles.

In a further specific embodiment, a U-shaped groove 5 is formed in the wrench head 2, and two bottom corners of the U-shaped groove 5 are rounded.

In a further embodiment, two fixed dead wrench lips, i.e. a wrench lip a3 and a wrench lip B4, are arranged on the wrench head 2 on both sides of the U-shaped groove 5, and the protruding parts of the two wrench lips are right-angled to fasten the bolt.

In this embodiment, the wrench is made of 45A steel, heat-treated to 40-43 HRC, and flanged to ensure good strength and rigidity at the opening of the wrench.

In this embodiment, the wrench is set to have 4 pieces, different size specifications, and is used for fixing 4 main reducer mounting support bolts of left back, right back, left front and right front respectively.

Example 2

The utility model discloses wrench head 2 and curved handle 1 structure not an organic whole, wrench head is removable.

In this embodiment, a threaded hole is formed in the wrench head 2, and a threaded cylinder is formed in the wrench neck 6, and the two are connected through threads.

In this embodiment, the wrench comprises a series of differently sized wrench heads 2, including at least one of M10, M14.

Example 3

On embodiment 1 or embodiment 2 basis, according to the utility model discloses a spanner is used for fixed left back final drive mounting support bolt, and the fillet radius of its U type recess 5 is 17mm long, high 10mm, two base angles is R2, and pull the long 6mm of lip A3, pull the long 8mm of lip B4, and 2 high 20mm of spanner head, the fillet radius of spanner head 2 and the 6 junction of spanner neck is 2 × R3, and 6 long 16mm of spanner neck, spanner neck 6 and the 1 junction fillet radius of curved handle are R10, and curved handle 1 is long 90mm, high 12mm, the spanner is whole high 80mm, wide 12 mm.

Example 4

On embodiment 1 or embodiment 2 basis, according to the utility model discloses a spanner is used for fixed right rear main reducer erection support bolt, the fillet radius of 5 long 17mm of its U type recess, height 10mm, two base angles is R2, pull the 3mm of lip A3 length, pull the 3mm of lip B4 length, spanner head 2 height 20mm, the fillet radius of 2 and the 6 junctions of spanner neck of spanner head is 2 × R3, the 6 long 14mm of spanner neck, spanner neck 6 is R10 with the fillet radius of 1 junctions of curved handle, curved handle 1 is wide 90mm, high 14mm, the spanner is 80mm high in whole.

Example 5

On embodiment 1 or embodiment 2 basis, according to the utility model discloses a spanner is used for fixed left front main reducer erection support bolt, the fillet radius of 5 long 22mm of its U type recess, high 10mm, two base angles is R2, pull the long 6mm of lip A3, pull the long 8mm of lip B4, spanner head 2 height 20mm, the fillet radius of 2 and the 6 junctions of spanner head 2 and spanner neck is 2 × R3, 6 long 16mm of spanner neck, spanner neck 6 is R10 with the fillet radius of 1 junctions of curved handle, curved handle 1 is long 90mm, high 12mm, the spanner is whole high 80mm, wide 12 mm.

Example 6

On embodiment 1 or embodiment 2 basis, according to the utility model discloses a spanner is used for fixed right front main reducer erection support bolt, the fillet radius of 5 long 22mm of its U type recess, height 10mm, two base angles is R2, pull the long 3mm of lip A3, pull the long 3mm of lip B4, spanner head 2 height 20mm, the fillet radius of 2 and the 6 junctions of spanner head and spanner neck is 2 × R3, 6 long 16mm of spanner neck, spanner neck 6 is R10 with the fillet radius of 1 junctions of curved handle, curved handle 1 is wide 90mm, high 14mm, the spanner is whole 80mm high.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A special wrench for fixing a bolt of a mounting support of a main reducer of a helicopter comprises a wrench head and is characterized by further comprising a bent handle, wherein the bent handle is connected with the wrench head.

2. The special wrench for bolt fixing of the helicopter main speed reducer installation support according to claim 1, wherein the handle of the bent handle is bent at an angle of 90 degrees with respect to the wrench head.

3. The special wrench for bolt fixing of the helicopter main reducer installation support according to claim 1, characterized in that the wrench is made of 45A steel.

4. The special wrench for bolt fixing of the helicopter main speed reducer installation support according to claim 1, characterized in that the wrench head is provided with a U-shaped groove.

5. The special wrench for fixing the bolts of the mounting support of the helicopter main speed reducer according to claim 1, wherein the wrench head is provided with two fixed wrench lips, a wrench lip A and a wrench lip B.

6. The special wrench for bolt fastening of a helicopter main reducer installation support according to claim 1, characterized in that the wrench head and the bent handle are connected through a wrench neck.

7. The special wrench for bolt fixing of the helicopter main reducer installation support according to claim 4, characterized in that the U-shaped groove is 17-22mm long and 10mm high, and the fillet radius of two bottom corners is R2.

8. The special wrench for fixing the bolts of the helicopter main reducer installation support according to claim 5, wherein the length of the wrench lip A is 3-6mm, and the length of the wrench lip B is 3-8 mm.

9. The special wrench for bolt fixing of the helicopter main reducer installation support according to claim 1, characterized in that the wrench head is 20mm high.

10. The special wrench for bolt fixing of the helicopter main speed reducer mounting support according to claim 6, wherein the fillet radius of the joint of the wrench head and the wrench neck is 2 × R3, and the length of the wrench neck is 14-16 mm.

11. The special wrench for fixing the bolts of the mounting support of the helicopter main speed reducer according to claim 6, wherein the length of the wrench neck is 16mm, the radius of the fillet at the joint of the wrench neck and the handle of the bent handle is R10, the length of the handle of the bent handle is 90mm, and the height of the handle of the bent handle is 12-14 mm.

12. The special wrench for bolt fixing of the helicopter main reducer installation support according to claim 1, characterized in that the whole wrench is 80mm high.