CN216229096U - Fixing tool for flange plate of main speed reducer of helicopter - Google Patents

Abstract

The utility model provides a frock is fixed to helicopter main reducer ring flange, belongs to helicopter maintenance troubleshooting technical field, including the fixing base, the fixing base can be dismantled with the ring flange and be connected, fixedly connected with bracing piece on one side lateral wall of fixing base, and the upper surface of fixing base is connected with a cylinder section of thick bamboo, the inside cavity of cylinder section of thick bamboo forms the spanner activity chamber, and cylinder section of thick bamboo top center opening forms torsion multiplier installing port, and the viewing aperture of at least three even setting is seted up along its circumference to the lateral wall of a cylinder section of thick bamboo. According to the tool, the effect of screwing the groove nut can be achieved only by acting a small torque on the torque multiplier, the flange plate does not need to be fixed by the aid of the stressing rod, the torque multiplier does not need to be fixed by additional torque, physical consumption of workers can be greatly reduced, and requirements for operation space are reduced.

Description

Fixing tool for flange plate of main speed reducer of helicopter

Technical Field

The utility model belongs to the technical field of maintenance and troubleshooting of helicopters, relates to a fixing tool, and particularly relates to a fixing tool for a flange plate of a main speed reducer of a helicopter.

Background

The input shaft and the output shaft of the helicopter main reducing gear are provided with flanges, the main reducing gear is connected with a transmission shaft through the flanges, in order to ensure high-speed rotation, the flanges are fixed on the input/output shaft of the main reducing gear through a groove nut with larger tightening torque (maximum 392 N.m), and the input/output shaft of the main reducing gear is protected through a cotter pin.

When the groove nut is installed and disassembled at the present stage, two operation methods are adopted: firstly, mounting a tool on the flange plate, then wrenching the groove nut by using a wrench, and applying reverse torque to the flange plate by using the tool to fix the flange plate during wrenching; in another method, a torque multiplier is added to the wrench based on the first method, and the input torque is reduced by the torque multiplier.

However, because the mounting moment of the groove nut is large (up to 392 N.m), a wrench needs to be wrenched by large force, and another worker needs to apply a reverse moment on the tool at the same time, so that the requirement on the physical strength of the worker is high and the worker consumes much; in addition, because the tightening torque needs to be controlled during tightening, the length of the torque wrench reaching the range reaches 1.4m, the operation is very inconvenient, the torque precision is difficult to control, and the working efficiency is low. Although the torque multiplier can reduce the input torque and is convenient for accurately controlling the tightening torque, a reaction torque wrench of the torque multiplier needs to be additionally fixed, the torque of the torque wrench is the same as that of the flange, the torque of the torque wrench can reach 392 N.m, two workers need to respectively control the torque wrench, and the requirement on physical strength is high.

Therefore, in order to solve the problems, the utility model provides a fixing tool for a flange plate of a main reducing gear of a helicopter.

Disclosure of Invention

In view of the above disadvantages of the prior art, an object of the present invention is to provide a fixture for fixing a flange of a main reducer of a helicopter, which is used for solving the technical problems of high physical requirements on workers during the fixing process of the flange and large working space required during the fixing process in the prior art.

In order to achieve the purpose and other related purposes, the utility model provides a fixing tool for a flange plate of a main speed reducer of a helicopter, which comprises a fixing seat, wherein the fixing seat is detachably connected with the flange plate, the upper surface of the fixing seat is connected with a cylindrical barrel, a wrench movable cavity is formed in the cylindrical barrel in a hollow mode, and a torque multiplier mounting opening is formed in the center opening of the top of the cylindrical barrel.

In any of the above schemes, preferably, the fixing seat and the cylinder are integrally formed.

Preferably in any one of the above schemes, the fixing seat is a triangular fixing seat, connecting holes are respectively formed at three corners of the fixing seat, and the fixing seat is connected with the flange after penetrating through the connecting holes through connecting pieces.

In any of the above aspects, preferably, the connecting member is a fixing pin.

In any of the above schemes, preferably, three corners of the fixing seat are chamfered.

In any one of the above schemes, preferably, a support rod is fixedly connected to a side wall of one side of the fixed seat.

In any of the above schemes, preferably, the side wall of the cylinder is provided with at least three observation ports uniformly arranged along the circumferential direction.

In any of the above schemes, preferably, the opening at the top of the cylindrical barrel is provided with a spline groove matched with the spline shaft of the torque multiplier along the circumferential direction.

As described above, the tool for fixing the flange plate of the main reducer of the helicopter has the following beneficial effects:

1. in the utility model, the input torque is reduced through the torque multiplier, so that the tightening torque is conveniently and accurately controlled.

2. According to the utility model, the tool has a compact structure, does not need a large torque wrench or an additional stress application rod, has a small requirement on the operation space, and is particularly suitable for troubleshooting on a helicopter.

3. According to the utility model, the groove nut can be wrenched by only one worker, so that the working efficiency is high.

4. According to the utility model, the labor consumption of workers is greatly reduced by using the tool.

Drawings

Fig. 1 is a schematic view of the structure of the present invention in use.

Fig. 2 is a schematic structural diagram of the tool of the present invention.

Fig. 3 shows a cross-sectional view of fig. 2.

Description of the element reference numerals

1-a fixed seat, 2-a cylindrical barrel, 3-a wrench movable cavity, 4-a torque multiplier mounting port, 5-a connecting hole, 6-a fixed pin, 7-a supporting rod, 8-an observation port, 9-a tooth socket, 10-a flange plate, 11-a nut, 12-a wrench and 13-a torque multiplier.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 3. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Referring to fig. 1-3, the utility model provides a flange fixing tool for a helicopter main reducer, which comprises a fixed seat 1, wherein the fixed seat 1 is detachably connected with a flange 10, the upper surface of the fixed seat 1 is connected with a cylindrical barrel 2, a wrench movable cavity 3 is formed in the cylindrical barrel 2 in a hollow manner, and a torque multiplier mounting opening 4 is formed in the center opening of the top of the cylindrical barrel 2.

When the tool is used, the wrench 12 is firstly installed on the nut 11, then the fixing seat 1 of the tool is fixedly installed on the flange plate 10, and finally the torque multiplier 13 is installed on the tool. The torque multiplier 13 passes through the torque multiplier mounting opening 4 and is connected with the wrench 12, and the torque multiplier 13 drives the wrench 12 to rotate in the wrench movable cavity 3, so that the nut 11 is screwed up, and the effect of screwing up the groove nut 11 is achieved.

In this embodiment, the torque multiplier 13 is used to reduce the input torque, so as to accurately control the tightening torque; meanwhile, in the use process of the tool, the flange plate 10 does not need to be fixed by a stress application rod, and the requirement on the operation space is reduced. In addition, in the use process of the tool, the torque multiplier 13 does not need to be additionally applied to fix, and the labor intensity of workers is greatly reduced.

In this embodiment, the internal diameter of wrench activity chamber 3 is greater than the external diameter of spanner 12 hand, and the spanner 12 of being convenient for can be in wrench activity chamber 3 free rotation, avoids producing friction and increasing the friction loss and drive spanner 12 and rotate required power between 3 inner walls of spanner activity chamber 12 and the spanner, reduces worker's intensity of labour, prolongs the life of frock and spanner 12 simultaneously.

As a further description of the above embodiment, the fixing base 1 and the cylindrical barrel 2 are integrally formed.

When this embodiment uses, the connected mode between fixing base 1 and the cylinder 2 is not limited to integrated into one piece, and other connected modes that can realize stable connection between the two are all can, like welding etc..

As a further description of the above embodiment, the fixing base 1 is a triangular fixing base, connecting holes 5 are respectively formed at three corners of the fixing base 1, and the fixing base 1 is connected to the flange 10 after passing through the connecting holes 5 by fixing pins 6.

When this embodiment uses, can dismantle through fixed pin 6 between fixing base 1 and the ring flange 10 and be connected, the installation and the dismantlement of the frock of being convenient for improve the installation and the dismantlement efficiency of frock to improve the efficiency of screwing up of groove nut 11.

In this embodiment, the connection mode between the fixing base 1 and the flange plate 10 is not limited to the fixing pin 6, and other connection modes capable of achieving detachable connection between the fixing base and the flange plate may be adopted, for example, the fixing base is connected with a nut in a matching manner.

In this embodiment, the equal chamfer of three angle departments of fixing base 1 is handled and can be increased the mellow nature of frock, avoids the staff collision to cause the injury to staff's healthy on the closed angle.

As a further description of the above embodiment, a support rod 7 is fixedly connected to one side wall of the fixing base 1.

In use, the support bar 7 is arranged to apply an opposing force to balance the small forces acting on the torque multiplier 13.

As a further description of the above embodiment, the side wall of the cylindrical barrel 2 is opened with at least three evenly arranged observation ports 8 along its circumference.

When the torque multiplier 13 is used in the embodiment, the observation port 8 is arranged to facilitate the observation of the rotation of the wrench 12, so as to better judge the force application condition of the torque multiplier 13.

As a further description of the above embodiment, the opening at the top of the cylindrical barrel 2 is provided with spline grooves 9 along its circumference that match the spline shaft of the torque multiplier 13.

When the embodiment is used, the spline grooves 9 are arranged to fix the torque multiplier 13 conveniently, and the link of additionally applying torque to fix the torque multiplier 13 is reduced, so that the groove nuts 11 can be wrenched only by one worker, the working efficiency is improved, and the physical consumption of the worker is reduced.

In conclusion, the effect of screwing the groove nut can be achieved by using the tool only by acting a small torque on the torque multiplier, the flange plate does not need to be fixed by the reinforcing rod, and the torque multiplier does not need to be fixed by additionally applying the torque, so that the physical consumption of workers can be greatly reduced, and the requirement on the operation space is reduced. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (8)

1. The utility model provides a frock is fixed to helicopter main reducer ring flange which characterized in that: including fixing base (1), fixing base (1) can be dismantled with ring flange (10) and be connected, the upper surface of fixing base (1) is connected with a cylinder section of thick bamboo (2), the inside cavity of a cylinder section of thick bamboo (2) forms spanner activity chamber (3), cylinder section of thick bamboo (2) top central opening forms torsion multiplier installing port (4).

2. The helicopter main reducer flange plate fixing tool according to claim 1, characterized in that: the fixing seat (1) and the cylindrical barrel (2) are integrally formed.

3. The helicopter main reducer flange plate fixing tool according to claim 1, characterized in that: fixing base (1) is the triangle-shaped fixing base, and connecting hole (5) have been seted up respectively to the three angle department of fixing base (1), fixing base (1) pass connecting hole (5) after be connected with ring flange (10) through the connecting piece.

4. The helicopter main reducer flange plate fixing tool according to claim 3, characterized in that: the connecting piece is a fixing pin (6).

5. The helicopter main reducer flange plate fixing tool according to claim 3, characterized in that: and three corners of the fixed seat (1) are chamfered.

6. The helicopter main reducer flange plate fixing tool according to claim 1, characterized in that: and a support rod (7) is fixedly connected to the side wall of one side of the fixed seat (1).

7. The helicopter main reducer flange plate fixing tool according to claim 1, characterized in that: the side wall of the cylinder (2) is provided with at least three observation ports (8) which are uniformly arranged along the circumferential direction.

8. The helicopter main reducer flange plate fixing tool according to claim 1, characterized in that: and a spline groove (9) matched with the spline shaft of the torque multiplier (13) is formed in the opening at the top of the cylindrical barrel (2) along the circumferential direction of the opening.

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