CN214870240U - Special dismounting tool of helicopter horizontal stabilizer connecting pin puller formula - Google Patents

Abstract

The utility model discloses a special disassembling tool for a connecting pin puller type of a horizontal stabilizing surface of a helicopter, wherein the main structure of the special disassembling tool is a U-shaped groove, and a U-shaped opening is arranged on the groove wall on one side of the U-shaped groove; two thread through holes are arranged on the other side of the groove wall along the direction vertical to the groove bottom for two screws to pass through; the upper screw is a jacking screw, the rod head of the upper screw is provided with a square base, and the jacking screw can penetrate through the U-shaped opening to jack and fix the lug of the horizontal stabilizing surface; the lower screw is a pulling screw, and the rod head of the lower screw is provided with a claw; the connecting pin is used for clamping the head of the connecting pin of the horizontal stabilizing surface, and when the pulling screw rod rotates outwards, the connecting pin can be pulled out. The utility model discloses a draw horse formula U type structural design, ingenious moment with rotatory is changed into along the axial pulling force of connecting pin, extracts the horizontal stabilizer connecting pin smoothly, has both reduced the dismantlement degree of difficulty, has avoided the dismantlement in-process again simultaneously to the connecting pin with connect the damage of ear bush.

Description

Special dismounting tool of helicopter horizontal stabilizer connecting pin puller formula

Technical Field

The utility model relates to an assembly and disassembly tools field, concretely relates to special assembly and disassembly tools of helicopter horizontal stabilizer connecting pin puller formula.

Background

The horizontal stabilizer of the small antelope helicopter is a rectangular airfoil with a camber airfoil shape and is used for generating a downward aerodynamic force to balance the lift force of a main rotor wing and the low-head moment of the gravity center of the helicopter so as to keep the balance and pitching stability of the helicopter. The horizontal stabilizer crossbeam penetrates through the tail beam, and the left side and the right side of the crossbeam are respectively connected with the fork openings of the rectangular wing surfaces by a horizontal connecting pin phi M8. The connecting pin is a bearing connecting pin, is made of metal, is exposed in air for a long time and is subjected to the action of torque, and is easy to generate electrochemical corrosion and deformation.

When dismantling little antelope helicopter horizontal stabilizer connecting pin, because there is not special extracting tool, there is the difficulty of dismantling mainly to have: firstly, the operation space is narrow and the sight is blocked; peripheral accessories have more obstacles, small tools cannot be used, and large tools cannot come out; the surface is smooth, the borrowing points are few, the sliding is easy, and the scratch deformation is easy; and fourthly, the disassembly time is long, and the working efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to little antelope helicopter horizontal stabilizer connecting pin dismouting problem, because there is not specialized tool when solving the dismouting, the surperficial fish tail that causes connects the damage of ear bush, and work efficiency low grade problem accords with the special assembly and disassembly tools of portion annex of dismouting key element according to factor design such as part appearance, structural feature, material characteristic, dismouting requirement, workspace.

In order to achieve the purpose, the utility model provides a special disassembling tool for a connecting pin puller type of a horizontal stabilizing surface of a helicopter, the main structure of the special disassembling tool is a U-shaped groove, and a U-shaped opening is arranged on one side groove wall of the U-shaped groove; two thread through holes are arranged on the other side of the groove wall along the direction vertical to the groove bottom for two screws to pass through; the upper screw is a jacking screw, the rod head of the upper screw is provided with a square base, and the jacking screw can penetrate through the U-shaped opening to jack and fix the lug of the horizontal stabilizing surface; the lower screw is a pulling screw, and the rod head of the lower screw is provided with a claw; the connecting pin is used for clamping the head of the connecting pin of the horizontal stabilizing surface, and when the pulling screw rod rotates outwards, the connecting pin can be pulled out.

As an improvement of the device, the claw is in the shape of a triangular prism, and the bottom surface of the claw is positioned on the bottom of the U-shaped groove; the pulling screw rod is fixed at the center of one side edge, the two side faces of the side edge are rectangular plates, and a U-shaped clamping groove extends from the other two side edges respectively and is used for clamping the head of the connecting pin of the horizontal stabilizing face.

As an improvement of the device, a rotating nut is arranged on the tightening screw rod.

As an improvement of the device, the pulling screw is provided with a rotating nut.

As an improvement of the device, the bottom of the U-shaped groove is 120mm long and 40mm wide, and the bottom of the U-shaped groove is 10mm thick; the depth of the groove wall is 80 mm; the depth of the U-shaped opening is 45mm, and the radius of the U-shaped groove is 5.5 mm.

As a modification of the device, the diameter of the jacking screw is 12mm, the length of the jacking screw is 140mm, and the size of the square base is 40mm multiplied by 30 mm.

As an improvement of the device, the diameter of the drawing screw is 14mm, and the length of the drawing screw is 150 mm; the side length of the triangle on the bottom surface of the clamping jaw is 40mm, the length of the side edge is 30mm, the length of the U-shaped clamping groove is 22mm, and the radius is 5.5 mm.

The utility model has the advantages that:

1. the tool of the utility model can be used for dismounting the connecting pin of the horizontal stabilizing surface of the small antelope helicopter, can reduce the dismounting difficulty and avoid the damage to the connecting pin and the lug connecting bush in the dismounting process;

2. the tool of the utility model is tried on the helicopter, and a front-line maintainer reflects a special tool after trial, so that the component dismounting efficiency can be improved, the helicopter maintenance working time can be shortened, and the attendance rate of the helicopter can be guaranteed;

3. because the special disassembling tool of the utility model adopts preventive maintenance measures, the damage of parts caused by maintenance can be reduced, thereby effectively saving maintenance cost and maintenance time; compared with the conventional tool dismounting component, the special tool dismounting has the advantages that the maintenance time, the maintenance safety and the maintenance quality are greatly improved by using the special tool dismounting, the damage to the part accessories and personnel is avoided, and the part accessory dismounting efficiency is improved;

4. the utility model discloses a draw horse formula U type structural design, ingenious moment with rotatory is changed into along the axial pulling force of connecting pin, extracts the horizontal stabilizer connecting pin smoothly, has both reduced the dismantlement degree of difficulty, has avoided the dismantlement in-process again simultaneously to the connecting pin with connect the damage of ear bush.

Drawings

Fig. 1 is the schematic view of the special disassembling tool for the horizontal stabilizer connecting pin puller of the helicopter of the utility model.

Reference numerals:

1. u-shaped groove 2, jacking screw rod 3 and square base

4. Pulling screw 5 and claw

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings.

The utility model provides a special assembly and disassembly tools of helicopter horizontal stabilizer connecting pin puller formula adopts following technical scheme:

1. military requirements

A ray of maintainer often meets some accessories and need dismantle the inspection or send the maintenance in helicopter maintenance work, but some part structures are complicated or the mounted position is special, use general purpose tool to carry out the dismouting relatively difficult, not only waste time and energy, can cause personnel, part damage even, increased the degree of difficulty and the intensity of maintenance, reduce work efficiency. If there is special extracting tool, in maintenance work, just can improve part dismouting efficiency, shorten helicopter maintenance operating time, the attendance of guarantee helicopter. Meanwhile, the special tool adopts preventive maintenance measures, so that the damage of parts caused by maintenance can be reduced, and the maintenance cost and the maintenance time are effectively saved. The special tool is provided, so that the part accessories can be conveniently and quickly disassembled, the damage to the connecting pin and the lug connecting bushing can be avoided while the part accessory replacement time is reduced, and the completeness of the part accessories of the helicopter is ensured.

2. Functional design

The tool is functionally decomposed by adopting a jacking screw rod, a rod head is provided with a square base, and the tool is pressed on the connecting lug by rotating a nut on the screw rod to play the roles of fixing and jacking force; the other pulling screw is adopted, the rod head is provided with a triangular small U-shaped clamping groove, the head of the connecting pin is clamped through the clamping groove, and the connecting pin is pulled out by rotating a nut on the screw; the U-shaped structure combines the two forces, which are mutually counteracted and mutually acted, so that the connecting pin of the horizontal stabilizing surface can be smoothly disassembled under the two acting forces.

3. Structural design

When the connecting pin of the horizontal stabilizing surface is disassembled, because the connecting pin and the bush are corroded and are not easy to take out, and the working space is small, the disassembly is difficult, and the damage to the horizontal stabilizing surface and the connecting lug is easy to cause.

The special tool adopts a puller design, the connecting pin puller type special dismounting tool is designed as shown in figure 1, the tool is designed into a U-shaped groove 1 and is provided with two screw rods, one screw rod is a puller screw rod 2, the rod head is provided with a square base 3, the tool is pressed on a connecting lug and fixed through a nut on a rotating screw rod, the other screw rod is a pulling screw rod 4, the rod head is provided with a clamping jaw 5, the head of the connecting pin is clamped through a clamping groove of the clamping jaw, and the connecting pin is pulled out through the nut on the rotating screw rod. By using the tool, the disassembly difficulty is reduced, and meanwhile, the damage to the connecting pin and the lug connecting bushing in the disassembly process is avoided.

The size of the special tool for disassembling the puller of the horizontal stabilizer connecting pin is as follows: the length L of the U-shaped groove structure of the main body is 120mm, the width H is 40mm, the inner depth is 80mm, the thickness H of the base is 10mm, the wall thickness H of the U-shaped base is 8mm, the opening depth L of the U-shaped groove at the front end is 45mm, and the radius r of the U-shaped groove is 5.5 mm; and (3) tightly pushing the screw: the diameter R is 12mm, and L is 140 mm; the square base is 40mm multiplied by 30 mm; the diameter R of the drawing screw is 14mm, and L is 150 mm; the U-shaped claw is a triangle, the bottom surface L of the triangle is 40mm, H is 30mm, the U-shaped clamping groove L is 22mm, and the radius r is 5.5 mm.

4. Material selection and processing technology

In the material selection and processing of the horizontal stabilizer connecting pin puller of the small antelope helicopter, the horizontal stabilizer connecting pin is made of alloy steel, when a special tool is designed, the principle of similar materials is considered, and in the dismounting process, the hardness requirement is met on the premise of not damaging original accessories, and the hard steel material is selected as the main processing and manufacturing purpose for reducing the weight of the tool.

The tool adopts section steel as a processing material, and annealing treatment is carried out during processing so as to enhance the toughness of the tool. The U-shaped structure is manufactured, two screw rods penetrate through one side wall, one screw rod is a tightly-pushing screw rod, the rod head is provided with a square base, the tool is pressed on the connecting lug and fixed through a nut on the rotating screw rod, the other screw rod is a pulling screw rod, the rod head is provided with a triangular small U-shaped clamping groove, the head of the connecting pin is clamped through the clamping groove, and the connecting pin is pulled out through the nut of the rotating screw rod. After the tool is formed, the U-shaped groove and the triangular small U-shaped clamping groove are quenched to enhance the strength of the U-shaped groove.

5. Method of operation

The split pin, the nut and the gasket on the connecting pin are removed, the screw on the connecting pin is screwed by the bullet nut, and the connecting pin is knocked by a hammer, so that a certain gap is reserved between the head part of the connecting pin and the joint surface. The jacking screw rod is pressed on the connecting lug and fixed by rotating the nut; and (4) connecting the head part of the pin of the U-shaped clamping groove card which is clamped and rotated by the pulling screw rod, and rotating a nut on the pulling screw rod to pull out the connecting pin.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will understand that modifications and equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of them shall fall within the scope of the claims of the present invention.

Claims (7)

1. A puller-type special dismounting tool for a connecting pin of a horizontal stabilizer of a helicopter is characterized in that the main structure of the special dismounting tool is a U-shaped groove, and a U-shaped opening is formed in the groove wall on one side of the U-shaped groove; two thread through holes are arranged on the other side of the groove wall along the direction vertical to the groove bottom for two screws to pass through; the upper screw is a jacking screw, the rod head of the upper screw is provided with a square base, and the jacking screw can penetrate through the U-shaped opening to jack and fix the lug of the horizontal stabilizing surface; the lower screw is a pulling screw, and the rod head of the lower screw is provided with a claw; the connecting pin is used for clamping the head of the connecting pin of the horizontal stabilizing surface, and when the pulling screw rod rotates outwards, the connecting pin can be pulled out.

2. The special puller-type disassembling tool for the connecting pin of the horizontal stabilizing surface of the helicopter according to claim 1, wherein the claw is in the shape of a triangular prism, and the bottom surface of the claw is positioned on the bottom of the U-shaped groove; the pulling screw rod is fixed at the center of one side edge, the two side faces of the side edge are rectangular plates, and a U-shaped clamping groove extends from the other two side edges respectively and is used for clamping the head of the connecting pin of the horizontal stabilizing face.

3. The special puller-type disassembling tool for the connecting pin of the horizontal stabilizer of the helicopter according to claim 1, wherein a rotating nut is arranged on the jacking screw rod.

4. The special pulling horse type disassembling tool for the connecting pin of the horizontal stabilizing surface of the helicopter according to claim 1, wherein a rotating nut is arranged on the pulling screw rod.

5. The special puller-type disassembling tool for the connecting pin of the horizontal stabilizer of the helicopter according to claim 1, wherein the bottom of the U-shaped groove is 120mm long and 40mm wide, and the bottom of the U-shaped groove is 10mm thick; the depth of the groove wall is 80 mm; the depth of the U-shaped opening is 45mm, and the radius of the U-shaped groove is 5.5 mm.

6. The special puller-type disassembling tool for the connecting pin of the horizontal stabilizer of the helicopter according to claim 1, wherein the diameter of the jacking screw is 12mm, the length of the jacking screw is 140mm, and the size of the square base is 40mm x 30 mm.

7. The special puller-type disassembling tool for the connecting pin of the horizontal stabilizer of the helicopter according to claim 2, wherein the diameter of the pulling screw is 14mm, and the length of the pulling screw is 150 mm; the side length of the triangle on the bottom surface of the clamping jaw is 40mm, the length of the side edge is 30mm, the length of the U-shaped clamping groove is 22mm, and the radius is 5.5 mm.

Images