CN210364431U

CN210364431U - Support structure for adjusting pitch of main rotor of helicopter

Info

Publication number: CN210364431U
Application number: CN201921144525.7U
Authority: CN
Inventors: 汤兴华
Original assignee: Grapefruit Aviation Intelligent Technology (nanjing) Co Ltd
Current assignee: Grapefruit Aviation Intelligent Technology (nanjing) Co Ltd
Priority date: 2019-07-20
Filing date: 2019-07-20
Publication date: 2020-04-21
Anticipated expiration: 2029-07-20

Abstract

The utility model discloses a bearing structure for helicopter owner rotor pitch is adjusted uses in unmanned helicopter debugging field, and its technical scheme main points are: the support rod is provided with a first support block and a second support block at two ends along the length direction, a first clamping groove and a second clamping groove are formed in one sides, away from the support rod, of the first support block and the second support block respectively, the longitudinal section of the first clamping groove is in a major arc shape, and the first clamping groove and the second clamping groove are clamped on a main rotor balancing pole and an installation shaft on the outer side of the unmanned helicopter respectively; has the technical effects that: the effect of stably supporting the main rotor balancing pole is enhanced, so that the possibility of reducing the pitch adjusting accuracy due to the unstable support of the main rotor balancing pole is reduced.

Description

Support structure for adjusting pitch of main rotor of helicopter

Technical Field

The utility model relates to an unmanned helicopter debugging field, in particular to a bearing structure that is used for helicopter owner rotor pitch to adjust.

Background

At present, in the process of assembling and manufacturing an unmanned helicopter, the pitch between parts on a main rotor of the helicopter needs to be repeatedly adjusted, and in the process of adjusting the pitch, an operator needs to hold the main rotor of the helicopter by hands, and usually at least two operators are needed to work. The staff supports there is a drawback because people's arm can be shake from time to time for helicopter owner's rotor is difficult to keep balance all the time, can cause the influence to the accuracy of pitch adjustment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bearing structure that is used for helicopter owner rotor pitch to adjust, its advantage: the main rotor balancing pole is supported through the supporting rod, the stability of supporting the main rotor balancing pole is improved, and the accuracy of adjusting the pitch is guaranteed.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a bearing structure for helicopter owner rotor pitch is adjusted, includes the bracing piece, the bracing piece is equipped with first supporting shoe and second supporting shoe respectively along length direction's both ends, first draw-in groove and second draw-in groove have been seted up respectively to one side that first supporting shoe and second supporting shoe deviate from the bracing piece, the longitudinal section of first draw-in groove is established to the major arc form, first draw-in groove and second draw-in groove joint are respectively in the installation epaxial in the main rotor balancing pole and the unmanned helicopter outside.

Through above-mentioned technical scheme, when the operator need adjust helicopter owner rotor pitch, the operator with the bracing piece along the first draw-in groove and the second draw-in groove joint respectively in the installation epaxial in main rotor balancing pole and the unmanned helicopter outside at length direction both ends to make propeller strut by fixed stay post. The support rod is used for supporting, so that the influence on the accuracy of screw pitch adjustment caused by the fact that the propeller supporting rod is easy to shake when a person is supported by hands is reduced, and the accuracy of screw pitch adjustment is guaranteed. Simultaneously, support screw branch through the bracing piece for need not alone to hold screw branch with the hand when adjusting the pitch, make alone just can carry out pitch regulation work, saved the manpower. Because the longitudinal section of first draw-in groove establishes to excellent arcuation, has increased the area of contact of first draw-in groove parcel in the periphery of main rotor stabilizer bar to be favorable to reducing the possibility that main rotor stabilizer bar drops from first draw-in groove.

The utility model discloses further set up to: the inserting groove is formed in one side, facing the supporting rod, of the first supporting block and the second supporting block, the supporting rod is inserted into the inserting groove, and first bolts are arranged on the first supporting block, the supporting rod, the second supporting block and the supporting rod in a penetrating mode and in threaded connection.

Through above-mentioned technical scheme, adopt between first supporting shoe and the second supporting shoe and the bracing piece and dismantle the mode of being connected, when first draw-in groove and second draw-in groove process long-term use cell wall by wearing and tearing, the operator of being convenient for is dismantled and is changed first supporting shoe and second supporting shoe.

The utility model discloses further set up to: the supporting rod is connected with the supporting rod through a first clamping groove, the supporting rod is connected with the supporting block through a second bolt, the supporting block is fixedly connected with a connecting plate on one side, deviating from the supporting rod, of the second supporting block, a third supporting block is arranged on one side, deviating from the second supporting block, of the connecting plate, the third supporting block is connected to the connecting plate through a second bolt in a threaded mode, and the second clamping groove is formed.

Through above-mentioned technical scheme, the setting of third supporting shoe and connecting plate has increased the bracing area that the bracing piece is close to second supporting shoe one end to the stability of bracing piece to the support of screw branch has been strengthened. Because the third supporting block and the connecting plate are detachably connected, when the second clamping groove in the third supporting block is abraded after long-term use, an operator can conveniently detach and replace the third supporting block.

The utility model discloses further set up to: and one side of the third supporting block, which faces the connecting plate, is provided with an arc-shaped groove, and the direction of the groove is opposite to that of the second clamping groove.

Through the technical scheme, at the in-process that the pitch was adjusted, when the bracing piece received pressure, the connecting plate received pressure towards the direction extrusion of second draw-in groove for the direction protrusion of the second draw-in groove of recess orientation under the extrusion force has played the cushioning effect to the extrusion force, thereby reduced because of the too big possibility that makes the stability unbalance of second draw-in groove round the bracing piece rotation and make the bracing piece of extrusion force that the bracing piece received, thereby guaranteed the effect that the bracing piece steadily supported main rotor balancing pole.

The utility model discloses further set up to: the second supporting shoe is fixedly connected with a fixing column towards one side of the connecting plate, the fixing column penetrates through the connecting plate and extends into the groove, a clamping block is fixedly connected to one end, located in the groove, of the fixing column, and the clamping block is abutted to one side, facing the groove, of the connecting plate.

Through above-mentioned technical scheme, connecting plate and second supporting shoe adopt to rotate the mode of connecting, and the operator of being convenient for rotates the connecting plate round the fixed column as required for second draw-in groove on the third supporting shoe is in the same place with installation axle joint, and first draw-in groove on the first supporting shoe is in the same place with main rotor balancing pole joint. Set up like this, the operator of being convenient for adjusts the skew angle of third supporting shoe according to the skew relation between installation axle and the main rotor balancing pole for the bracing piece can be stable support all the time between installation axle and main rotor balancing pole.

The utility model discloses further set up to: the utility model discloses a quick-witted pole, including bracing piece, first minute pole, spliced eye, spliced pole, first branch pole, second branch pole, the bracing piece sets to first minute pole and second branch pole, the spliced eye has been seted up to one side that first minute pole was divided to the first branch pole towards the second, the second divides the pole to have the spliced pole towards one side rigid coupling of first branch pole, the spliced pole is pegged graft in the spliced eye, the first fixed block of fixedly connected with on the outer wall of first minute pole, the rigid coupling has the second fixed block on the outer wall of second branch pole, wear to be equipped with the screw rod on the first fixed block, the screw rod is towards the one end fixed connection of second fixed block on the second fixed block.

Through above-mentioned technical scheme, when needs adjust the length of bracing piece, the operator unscrews the nut on the screw rod for first fixed block moves along the screw rod, and first minute pole removes along with the screw rod this moment, and the length of grafting post in the spliced eye changes, makes the length of bracing piece change. The bracing piece sets up to the structure of adjustable length, and the operator of being convenient for adjusts the length of bracing piece according to the distance between installation axle and the main rotor balancing pole to make the bracing piece be applicable to the unmanned helicopter of the interval difference between installation axle and the main rotor balancing pole, enlarged the application scope of bracing piece.

The utility model discloses further set up to: and the groove walls of the first clamping groove and the second clamping groove are fixedly connected with anti-slip pads.

Through above-mentioned technical scheme, the setting of slipmat has increased first draw-in groove and main rotor balancing pole and second draw-in groove and the installation between the axle frictional force, has reduced the possibility that takes place to slide between first draw-in groove and main rotor balancing pole and second draw-in groove and the installation axle to increased the stability of being connected between first draw-in groove and main rotor balancing pole and second draw-in groove and the installation axle, thereby increased the stability that the bracing piece supported main rotor balancing pole.

The utility model discloses further set up to: the groove walls of the first clamping groove and the second clamping groove are provided with inclined planes at positions close to the notches, and the inclined planes incline towards the direction far away from the notches.

Through above-mentioned technical scheme, the setting on inclined plane, the operator of being convenient for extrudees first draw-in groove and second draw-in groove along the installation axle in the inclined plane towards main rotor balancing pole and the unmanned helicopter outside to be convenient for the operator quick with first draw-in groove and second draw-in groove joint respectively on the installation axle in main rotor balancing pole and the unmanned helicopter outside.

The utility model discloses further set up to: the bracing piece is established to vertical part and flexion, the vertical part and the main rotor balancing pole of bracing piece keep perpendicular.

Through above-mentioned technical scheme, when the bracing piece supported the position that is close to the tip at main rotor balancing pole, because the vertical part keeps perpendicular with main rotor balancing pole to be favorable to the main rotor balancing pole joint in the intermediate position of first draw-in groove, reduced the main rotor balancing pole from the first draw-in groove interior the possibility that breaks away from of first supporting block, guaranteed the stability that the bracing piece supported main rotor balancing pole.

To sum up, the utility model discloses following beneficial effect has:

1. the main rotor balancing pole is not required to be supported by an operator by hands, so that the possibility that the shaking of the operator causes influence on the accuracy of the pitch adjustment when the operator supports the main rotor balancing pole is reduced, the effect of stably supporting the main rotor balancing pole is achieved, and the accuracy of the pitch adjustment is ensured;

2. the length of bracing piece can be adjusted according to the interval between installation axle and the main rotor balancing pole, has increased the application scope of bracing piece.

Drawings

Fig. 1 is a schematic view of the entire structure of embodiment 1.

Fig. 2 is a schematic structural view for embodying the first support block, the second support block and the third support block in embodiment 1.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic structural view for embodying the first support block, the second support block and the third support block in embodiment 1.

Fig. 5 is an enlarged view of a portion B in fig. 4.

Fig. 6 is a schematic structural diagram for showing a connection manner of the first branch lever and the second branch lever in embodiment 2.

Fig. 7 is a schematic structural view for embodying the support bar composed of the vertical part and the bent part in embodiment 3.

Reference numerals: 1. a support bar; 2. a first support block; 3. a second support block; 4. a first card slot; 5. a second card slot; 6. a main rotor balance bar; 7. an unmanned helicopter; 8. installing a shaft; 9. a first bolt; 10. a connecting plate; 11. a third support block; 12. a second bolt; 13. a groove; 14. fixing a column; 15. a clamping block; 16. a first branch rod; 17. a second branch rod; 18. inserting holes; 19. inserting the column; 20. a first fixed block; 21. a second fixed block; 22. a screw; 23. a nut; 24. an inclined surface; 25. inserting grooves; 26. a non-slip mat; 27. a vertical portion; 28. a curved portion.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1: a support structure for helicopter main rotor pitch adjustment, referring to fig. 1, in this embodiment, a main rotor balance bar 6 is provided on an unmanned helicopter 7, an installation shaft 8 is installed on the outer side of the unmanned helicopter 7, and the installation shaft 8 is located below the main rotor balance bar 6 and has a cross point in the vertical direction with the main rotor balance bar 6.

Referring to fig. 2, the supporting structure includes a supporting rod 1, and a first supporting block 2 and a second supporting block 3 are respectively disposed at two ends of the supporting rod 1 along a length direction. In this embodiment, the first support block 2 and the second support block 3 are both cylindrical. Inserting groove 25 has all been seted up towards one side of bracing piece 1 to first supporting shoe 2 and second supporting shoe 3, and bracing piece 1 is pegged graft in inserting groove 25, and first supporting shoe 2 and second supporting shoe 3 all are on bracing piece 1 through first bolt 9 threaded connection, and one side that second supporting shoe 3 deviates from bracing piece 1 is connected with a connecting plate 10. One side of the connecting plate 10 departing from the second supporting block 3 is provided with a third supporting block 11, and the third supporting block 11 is in threaded connection with the connecting plate 10 through a second bolt 12.

Referring to fig. 2 and 4, a first clamping groove 4 is respectively formed in the first supporting block 2 and one side of the third supporting block 11 departing from the supporting rod 1, and a second clamping groove 5 is formed in one side of the third supporting block 11 departing from the connecting plate 10. Inclined planes 24 (fig. 3) are arranged on the groove walls of the first clamping groove 4 and the second clamping groove 5 at positions close to the notches, the inclined planes 24 incline towards the direction far away from the notches, the opening at the inclined plane 24 on the groove wall of the first clamping groove 4 is two millimeters larger than the opening of the first clamping groove 4, and the opening at the inclined plane 24 on the groove wall of the second clamping groove 5 is two millimeters larger than the opening of the second clamping groove 5. Due to the arrangement, an operator can conveniently push the inclined surface 24 at the first clamping groove 4 towards the main rotor balancing pole 6 and forcibly push the first clamping groove 4 towards the main rotor balancing pole 6 until the first clamping groove 4 is clamped on the main rotor balancing pole 6; in the same way, the operator can conveniently clamp the second clamping groove 5 on the mounting shaft 8. Because the longitudinal section of first draw-in groove 4 establishes to major arc shape, increased first draw-in groove 4 parcel at the area of contact of main rotor stabilizer bar 6's periphery to be favorable to reducing the possibility that main rotor stabilizer bar 6 drops from first draw-in groove 4.

Referring to fig. 2 and 4, when the operator adjusted helicopter owner rotor pitch, the operator blocked first draw-in groove 4 and second draw-in groove 5 respectively on the installation axle 8 in the main rotor balancing pole 6 and the unmanned helicopter 7 outside to make main rotor balancing pole 6 by fixed stay, made main rotor balancing pole 6 rock easily when having reduced the staff and having supported main rotor balancing pole 6, and caused the possibility of influence to the precision of pitch adjustment. Because the groove walls of the first clamping groove 4 and the second clamping groove 5 are both bonded with a layer of anti-slip pad 26 (figure 5). The setting of slipmat 26 has increased first draw-in groove 4 and main rotor stabilizer 6 and second draw-in groove 5 and the installation axle 8 between frictional force, has increased the stability of joint between first draw-in groove 4 and main rotor stabilizer 6 and second draw-in groove 5 and the installation axle 8.

Referring to fig. 2, an arc-shaped groove 13 is formed in one side of the third supporting block 11 facing the connecting plate 10, and the direction of the groove 13 is opposite to that of the second slot 5. During the process of adjusting the screw pitch. When the supporting rod 1 is pressed, the connecting plate 10 is pressed towards the second clamping groove 5. At this time, the groove 13 protrudes in the direction of the second clamping groove 5 facing under the extrusion force, and the extrusion force is buffered. A fixing column 14 is welded on one side, facing the connecting plate 10, of the second supporting block 3, the fixing column 14 penetrates through the connecting plate 10 and extends into the groove 13, a clamping block 15 is welded at one end, located in the groove 13, of the fixing column 14, and the clamping block 15 is abutted to one side, facing the groove 13, of the connecting plate 10. The fixed column 14 is arranged, so that an operator can rotate the third supporting block 11 along the fixed column 14 as required, and the second clamping groove 5 on the third supporting block 11 is clamped on the mounting shaft 8.

The working process is as follows: when needs adjust helicopter owner rotor pitch, the operator is earlier with 5 joint of second draw-in grooves on the third supporting shoe 11 on installation axle 8 to rotate connecting plate 10 round fixed column 14, then the operator with 4 joints of first draw-in grooves on the first supporting shoe 2 on main rotor balancing pole 6, make bracing piece 1 live main rotor balancing pole 6 support, thereby the operator of being convenient for adjusts the pitch.

Example 2: the utility model provides a bearing structure for helicopter main rotor pitch adjusts, refer to fig. 6, and the difference with embodiment 1 is that bracing piece 1 sets up to first minute pole 16 and second branch pole 17, and the spliced eye 18 has been seted up to one side that first minute pole 16 divided pole 17 towards the second, and the spliced pole 19 is welded to one side that second branch pole 17 divided pole 16 towards first minute pole, and spliced pole 19 pegs graft in spliced eye 18. The outer wall of the first branch rod 16 is welded with a first fixing block 20, the outer wall of the second branch rod 17 is welded with a second fixing block 21, a screw rod 22 penetrates through the first fixing block 20, one end of the screw rod 22, facing the second fixing block 21, is welded on the second fixing block 21, and nuts 23 are in threaded connection with the screw rod 22 on two sides of the first fixing block 20. When the length of the support rod 1 needs to be adjusted, an operator unscrews the nut 23 on the screw rod 22, so that the first fixing block 20 moves along the screw rod 22, and at this time, the first sub-rod 16 moves along with the screw rod 22, and the length of the insertion column 19 in the insertion hole 18 changes, so that the length of the support rod 1 changes. Set up like this, be convenient for the operator according to the length of the distance adjustment bracing piece 1 between main rotor balancing pole 6 and the installation axle 8 to the application range of bracing piece 1 has been increased.

Example 3: referring to fig. 7, a supporting structure for adjusting the pitch of the main rotor of a helicopter is different from embodiment 1 in that a supporting rod 1 is provided with a vertical part 27 and a bent part 28, the vertical part 27 and the bent part 28 are welded together, a first supporting block 2 is connected with the vertical part 27, a second supporting block 3 is connected with the bent part 28, and the vertical part 27 of the supporting rod 1 is perpendicular to a main rotor balance bar 6. When bracing piece 1 supports when the position that is close to the tip at main rotor stabilizer 6, because vertical portion 27 keeps perpendicular with main rotor stabilizer 6, main rotor stabilizer 6 joint is at the intermediate position of first draw-in groove 4 this moment to being the horizontality and supporting on first supporting block 2, having reduced the possibility that main rotor stabilizer 6 breaks away from in the first draw-in groove 4 of first supporting block 2, having guaranteed the stability that bracing piece 1 supported main rotor stabilizer 6.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A bearing structure that is used for helicopter owner rotor pitch to adjust which characterized in that: including bracing piece (1), bracing piece (1) is equipped with first supporting shoe (2) and second supporting shoe (3) respectively along length direction's both ends, first draw-in groove (4) and second draw-in groove (5) have been seted up respectively to one side that first supporting shoe (2) and second supporting shoe (3) deviate from bracing piece (1), the longitudinal section of first draw-in groove (4) is established to major arc shape, first draw-in groove (4) and second draw-in groove (5) joint respectively are on installation axle (8) in main rotor stabilizer (6) and unmanned helicopter (7) outside.

2. The support structure for helicopter main rotor pitch adjustment according to claim 1, characterized in that: inserting grooves (25) are formed in one sides, facing the supporting rods (1), of the first supporting blocks (2) and the second supporting blocks (3), the supporting rods (1) are inserted into the inserting grooves (25), and the first supporting blocks (2), the supporting rods (1), the second supporting blocks (3) and the supporting rods (1) are all connected with first bolts (9) in a penetrating mode through threads.

3. The support structure for helicopter main rotor pitch adjustment according to claim 2, characterized in that: one side fixedly connected with connecting plate (10) that second supporting shoe (3) deviates from bracing piece (1), one side that connecting plate (10) deviates from second supporting shoe (3) is equipped with third supporting shoe (11), third supporting shoe (11) are through second bolt (12) threaded connection on connecting plate (10), one side that third supporting shoe (11) deviate from connecting plate (10) is seted up in second draw-in groove (5).

4. The support structure for helicopter main rotor pitch adjustment according to claim 3, characterized in that: an arc-shaped groove (13) is formed in one side, facing the connecting plate (10), of the third supporting block (11), and the direction of the groove (13) is opposite to that of the second clamping groove (5).

5. The support structure for helicopter main rotor pitch adjustment according to claim 4, characterized in that: one side rigid coupling of second supporting shoe (3) orientation connecting plate (10) has fixed column (14), fixed column (14) wear to establish connecting plate (10) and extend to in recess (13), the one end rigid coupling that fixed column (14) are located recess (13) has fixture block (15), fixture block (15) contradict with one side of connecting plate (10) orientation recess (13).

6. The support structure for helicopter main rotor pitch adjustment according to claim 1, characterized in that: the utility model discloses a supporting rod, including bracing piece (1), first branch pole (16) and second branch pole (17) set to, first branch pole (16) divide one side of pole (17) to seted up spliced eye (18) towards the second, the second divides one side rigid coupling of pole (17) towards first branch pole (16) to have grafting post (19), grafting post (19) are pegged graft in spliced eye (18), first branch is fixed with first fixed block (20) on the outer wall of pole (16), the rigid coupling has second fixed block (21) on the outer wall of second branch pole (17), wear to be equipped with screw rod (22) on first fixed block (20), screw rod (22) are on second fixed block (21) towards the one end fixed connection of second fixed block (21), the equal threaded connection in the both sides of first fixed block (20) has nut (23) on screw rod (22).

7. The support structure for helicopter main rotor pitch adjustment according to claim 1, characterized in that: and anti-slip pads (26) are fixedly connected to the groove walls of the first clamping groove (4) and the second clamping groove (5).

8. The support structure for helicopter main rotor pitch adjustment according to claim 1, characterized in that: inclined planes (24) are arranged on the groove walls of the first clamping groove (4) and the second clamping groove (5) at positions close to the notches, and the inclined planes (24) incline towards the direction far away from the notches.

9. The support structure for helicopter main rotor pitch adjustment according to claim 1, characterized in that: the vertical part (27) and the bending part (28) are arranged on the supporting rod (1), and the vertical part (27) of the supporting rod (1) is vertical to the main rotor balancing pole (6).