Fuselage rotating support of small aircraft

Abstract

The invention discloses a small aircraft fuselage rotating support which comprises a base, two supporting plates are fixed to the base, a first hand-cranking jack and a second hand-cranking jack which can slide are arranged on the portions, on the two sides of the supporting plates, of the base respectively, and hand-cranking lifting handles of the two hand-cranking jacks are fixedly connected through a telescopic rod. A machine body shell is placed on the supporting plate, a first hand-cranking jack is fixed to the machine body shell through a fixing rod and a bolt, a second hand-cranking jack is arranged on the machine body shell in a sleeving mode through a pivotal bearing, then the machine body shell is controlled to freely ascend or descend or rotate through a hand-cranking lifting handle and a hand-cranking rotating handle, and all parts can be conveniently installed on the shell. The labor intensity is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of small aircraft processing equipment, and particularly to a rotating bracket for the fuselage of a small aircraft. Background Art

[0002] Small aircraft play an important role in multiple fields such as military, civilian, agricultural, and forestry. In the prior art, the production and manufacturing of small aircraft mostly adopt modular manufacturing and assembly. First, the fuselage structure framework is assembled, and then drilling, grinding are carried out on the fuselage, and the fuselage skin and various components are installed and adhered. Finally, medium and large components such as wings and tails are assembled. Among them, a fuselage bracket is required to lift and rotate the fuselage to facilitate the installation of each component.

[0003] Because the fuselage of a small aircraft is relatively small, in our company's existing factories, fixed brackets are generally used, and manual or electric hoist is used for rotation adjustment and then installation. Although it is relatively convenient, there are many components of the aircraft, and the number of adjustments required is large. After a long time, the labor intensity is high and the efficiency is low. In addition, the fuselage shell is mostly of special shape, and the support provided by the fixed bracket is limited, and it cannot adapt to each angle of the shell according to actual needs, thus resulting in inconvenient assembly. This is the existing problem. Summary of the Invention

[0004] To make up for the above deficiencies, the present invention provides a rotating bracket for the fuselage of a small aircraft, which can be fixed from both ends of the fuselage and can freely lift and rotate the fuselage.

[0005] The present invention is realized by the following technical solutions: A rotating bracket for the fuselage of a small aircraft, including a base, characterized in that: two support plates are fixed on the base, and slidable first and second manual jacks are respectively arranged on the base on both sides of the support plates. The manual lifting handles of the two manual jacks are fixedly connected through a telescopic rod; a transmission box is fixed on the output end of the first manual jack. Transmission shafts extend from both the left and right side walls of the transmission box. A positioning mechanism is arranged on the right side wall of the transmission box. A manual rotation handle is arranged on the front side wall of the transmission box. A fixed rod is fixed on the transmission shaft. A limiting ring is fixed on the output end of the second manual jack, and a slewing bearing is fixed in the limiting ring; the fuselage shell is placed on the support plate, the fixed rod is fixed to the fuselage shell through bolts, and the slewing bearing is sleeved on the fuselage shell, and the fuselage shell is freely lifted or rotated by controlling the manual lifting handle and the manual rotation handle.

[0006] Further optimized, through windows are opened on the support plates, the telescopic rod passes through the through windows. The telescopic rod includes a sub-rod in the middle and female rods on both sides. The two ends of the sub-rod are inserted into the female rods, and two limiting strips are fixed on the sub-rod.

[0007] Further optimized, two slide rails are provided at each end of the base, and a slider is provided on each of the two slide rails at each end. The first hand-cranked hoist and the second hand-cranked hoist are respectively fixed on a slider.

[0008] Further optimized, two locking bolts are provided on each slider.

[0009] Further optimized, a worm and a transmission gear are rotatably connected in the transmission box. The worm and the transmission gear are meshed with each other. One end of the worm passes through the front side wall of the transmission box and is fixedly connected to the hand-cranking handle. The left end of the transmission shaft of the transmission gear passes through the left side wall of the transmission box and is fixedly connected to the fixed rod. The right end of the transmission shaft of the transmission gear passes through the right side wall of the transmission box and is connected to the positioning mechanism.

[0010] Further optimized, the positioning mechanism includes a positioning disk, a positioning block and a pin shaft. The positioning disk is fixed on the right side wall of the transmission box. A plurality of positioning holes are circumferentially and uniformly distributed on the positioning disk. The right end of the transmission shaft of the transmission gear passes through the positioning disk, and the positioning block is fixed to the right end of the transmission shaft. A through hole is provided on the positioning block, and the pin shaft passes through the through hole and is inserted into the positioning hole.

[0011] Further optimized, a limiting groove is provided on the limiting ring, and the slewing bearing is fixed in the limiting groove by bolts.

[0012] Further optimized, a rubber layer is adhered to the inner ring wall of the slewing bearing.

[0013] Further optimized, the lowest height of the fixed rod is higher than that of the support plate, and placing grooves are provided on the support plates.

[0014] The beneficial effects of the present invention are as follows: When the present invention is used, first pull the two hand-cranked hoists to both ends of the base, manually carry or place the fuselage shell on the support plate through a hoisting device, and then adjust the height of the hand-cranked hoists and push the two hand-cranked hoists back. The first hand-cranked hoist is fixedly connected to the fuselage through a fixed rod by bolts, and the second hand-cranked hoist is sleeved on the round end of the fuselage through a limiting ring to play a supporting role. Then lock the bolts on the two sliders. The fuselage shell can be freely rotated and lifted through the hand-cranking handle and the hand-lifting handle, which is convenient for installing various components on the shell, reduces the labor intensity, and improves the construction efficiency.

[0015] In the present invention, a positioning mechanism is provided on the transmission case. When the machine body is rotated to a certain angle, it can be positioned through the positioning mechanism, which is convenient for construction. The telescopic rod synchronously connects the manual lifting rods of two manual jacks. By rotating the manual lifting rod of the first manual jack, synchronous lifting can be achieved. The telescopic design of the telescopic rod enables the two manual jacks to slide on the slide rail without affecting the synchronous connection, avoiding interference with the placement of the support plate for the machine body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic three-dimensional structure diagram of the clamping machine body of the present invention.

[0017] Figure 2 FIG. is a schematic three-dimensional structure diagram of the present invention.

[0018] Figure 3 FIG. is a schematic diagram of the transmission case of the present invention.

[0019] Figure 4 FIG. is a schematic diagram of the internal structure of the transmission case in the present invention.

[0020] Figure 5 FIG. is a schematic diagram of the structure of the limit ring in the present invention.

[0021] Figure 6 FIG. is a schematic diagram of the structure of the limit ring after fixing the slewing bearing in the present invention.

[0022] Figure 7 FIG. is a partially enlarged schematic diagram of the telescopic rod in the present invention.

[0023] In the figures: 1, base; 11, slide rail; 12, slider; 13, locking bolt; 2, support plate; 21, through window; 3, first manual jack; 31, manual lifting handle; 4, second manual jack; 5, transmission case; 51, manual turning handle; 52, transmission shaft; 53, positioning mechanism; 531, positioning disc; 532, positioning block; 533, pin shaft; 534, positioning hole; 54, fixed rod; 55, transmission gear; 56, worm; 6, limit ring; 61, slewing bearing; 62, limit groove; 63, rubber layer; 71, female rod; 72, male rod; 73, limit strip; 9, machine body housing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with its accompanying drawings. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "left", "right", "front", "rear", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0025] As shown Figures 1 - 7 in the figure, the present invention provides a rotating bracket for a small aircraft fuselage, including a base 1, on which two support plates 2 are fixed. The support plates are used to place the fuselage shell lifted or transported. On the base 1 on both sides of the support plate 2, a slidable first hand-operated jack 3 and a second hand-operated jack 4 are respectively provided. When lifting the fuselage, the two hand-operated jacks are slid to both ends of the base to avoid affecting the lifting. The hand-operated lifting handles 31 of the two hand-operated jacks are fixedly connected through a telescopic rod, so that the two hand-operated jacks are lifted and lowered synchronously by one hand-operated lifting handle.

[0026] A transmission box 5 is fixed on the output end of the first hand-operated jack 3. Transmission shafts 52 extend from both the left side wall and the right side wall of the transmission box 5. The transmission shafts are used to drive the fuselage to rotate. A positioning mechanism 53 is provided on the right side wall of the transmission box 5. When the fuselage rotates to a certain angle, it is fixed by the positioning mechanism. A hand-operated turning handle 51 is provided on the front side wall of the transmission box 5. The transmission shaft is rotated by the hand-operated turning handle. A fixing rod 54 is fixed on the transmission shaft 52. A limiting ring 6 is fixed on the output end of the second hand-operated jack 4. A slewing bearing 61 is fixed in the limiting ring 6.

[0027] A fuselage shell 9 is placed on the support plate 2. The fixing rod 54 and the fuselage shell 9 are fixed by bolts. The slewing bearing 61 is sleeved on the fuselage shell 9. The function of the slewing bearing is to provide support for one end of the fuselage shell and cooperate with the fuselage shell to rotate. The free lifting or rotation of the fuselage shell is controlled by the hand-operated lifting handle 31 and the hand-operated turning handle 51.

[0028] As a preferred embodiment, through windows 21 are opened on the support plate 2, and the telescopic rod passes through the through windows. The telescopic rod includes a sub-rod 72 in the middle and female rods 71 on both sides. The two ends of the sub-rod 72 are inserted into the female rods 71. Due to the existence of the telescopic rod, the two hand-operated jacks can slide freely on the slide rails. Two limiting strips 73 are fixed on the sub-rod 72, aiming to prevent the female rods at both ends of the telescopic rod from rotating relative to each other, and the hand-operated lifting rods of the two hand-operated jacks always remain synchronized.

[0029] As a preferred embodiment, two slide rails 11 are provided at each end of the base 1. A slider 12 is provided on each of the two slide rails 11 at each end. The first hand-operated jack 3 and the second hand-operated jack 4 are respectively fixed on a slider 12. When lifting the fuselage, the two hand-operated jacks are slid to both ends of the base to avoid affecting the lifting and also facilitate the fixation of the fixing rod and the slewing bearing to the fuselage.

[0030] As a preferred embodiment, two locking bolts 13 are provided on each slider 12, which are used to lock the slider after the fixing rod and the slewing bearing are fixed to the fuselage to avoid loosening.

[0031] As a preferred embodiment, a worm 56 and a transmission gear 55 are rotatably connected in the transmission case 5. The worm 56 and the transmission gear 55 are meshed with each other. One end of the worm 56 penetrates through the front side wall of the transmission case 5 and is fixedly connected to the hand-crank turning handle 51. The left end of the transmission shaft 52 of the transmission gear 55 penetrates through the left side wall of the transmission case 5 and is fixedly connected to the fixed rod 54. The right end of the transmission shaft 52 of the transmission gear 55 penetrates through the right side wall of the transmission case 5 and is connected to the positioning mechanism 53. By manually rotating the hand-crank turning handle 51, the transmission gear is driven to rotate by the worm, and then the fuselage shell is rotated by the transmission shaft.

[0032] As a preferred embodiment, the positioning mechanism 53 includes a positioning disk 531, a positioning block 532 and a pin shaft 533. The positioning disk 531 is fixed on the right side wall of the transmission case 5. A plurality of positioning holes 534 evenly distributed in the circumferential direction are formed in the positioning disk 531. The right end of the transmission shaft 52 of the transmission gear 55 penetrates through the positioning disk 531, and the positioning block 532 is fixed to the right end of the transmission shaft 52. A through hole is formed in the positioning block 532. When the fuselage rotates a certain angle, the pin shaft 533 is inserted into the positioning hole 534 through the through hole to fix the transmission shaft 52. Among them, 8-12 positioning holes can be formed according to needs.

[0033] As a preferred embodiment, a limiting groove 62 is formed in the limiting ring 6, and the slewing bearing 61 is fixed in the limiting groove 62 by bolts. It should be noted that the bolts cannot affect the rotation of the inner ring of the slewing bearing.

[0034] As a preferred embodiment, a rubber layer 63 is adhered to the inner ring wall of the slewing bearing 61 to increase the friction force and protect the fuselage shell.

[0035] As a preferred embodiment, the lowest height of the fixed rod 54 is higher than that of the support plate 2. Placing grooves are formed in the support plates 2, and the transported or constructed fuselage shell is placed in the placing grooves of the support plates.

[0036] When the present invention is used, first pull the two hand-cranked jacks to both ends of the base, manually carry or place the fuselage shell on the support plate through a hoisting device, then adjust the height of the hand-cranked jacks, push the two hand-cranked jacks back. The first hand-cranked jack is fixedly connected to the fuselage through the fixed rod by bolts. The second hand-cranked jack is sleeved on the round end of the fuselage shell through the limiting ring to play a supporting role. Then lock the bolts on the two sliders. The fuselage shell can be freely lifted and rotated manually through the hand-crank turning handle and the hand-crank lifting handle, which is convenient for installing various components on the shell, reduces the labor intensity and improves the construction efficiency.

[0037] Where the present invention is not described in detail, it is the well-known technology of those skilled in the art. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A small aircraft fuselage rotating bracket, comprising a base (1), characterized in that: Two support plates (2) are fixed on the base (1). On the base (1) on both sides of the support plates (2), a slidable first manual trolley jack (3) and a second manual trolley jack (4) are respectively provided. The manual lifting handles (31) of the two manual trolley jacks are fixedly connected through a telescopic rod. A transmission box (5) is fixed on the output end of the first manual trolley jack (3). Transmission shafts (52) extend from both the left side wall and the right side wall of the transmission box (5). A positioning mechanism (53) is provided on the right side wall of the transmission box (5). A manual turning handle (51) is provided on the front side wall of the transmission box (5). A fixed rod (54) is fixed on the transmission shaft (52). A limit ring (6) is fixed on the output end of the second manual trolley jack (4). A slewing bearing (61) is fixed inside the limit ring (6). The fuselage shell is placed on the support plate (2). The fixed rod (54) is fixed to the fuselage shell by bolts. The slewing bearing (61) is sleeved on the fuselage shell. The free lifting or rotation of the fuselage shell is controlled by the manual lifting handle (31) and the manual turning handle (51).

2. The small aircraft fuselage rotating bracket according to claim 1, wherein: A through window is opened on the support plate (2). The telescopic rod passes through the through window. The telescopic rod includes a sub-rod (72) in the middle and mother rods (71) on both sides. The two ends of the sub-rod (72) are inserted into the mother rods (71). Two limit strips (73) are fixed on the sub-rod (72).

3. The small aircraft fuselage rotating bracket according to claim 1, characterized in that: Two slide rails (11) are provided at each end of the base (1). A slider (12) is provided on each of the two slide rails (11) at each end. The first manual trolley jack (3) and the second manual trolley jack (4) are respectively fixed on a slider (12).

4. The small aircraft fuselage rotating bracket according to claim 3, characterized in that: Two locking bolts (13) are provided on each slider (12).

5. The small aircraft fuselage rotating bracket according to claim 1, characterized in that: A worm (56) and a transmission gear (55) are rotatably connected inside the transmission box (5). The worm (56) and the transmission gear (55) are meshed with each other. One end of the worm (56) passes through the front side wall of the transmission box (5) and is fixedly connected to the manual turning handle. The left end of the transmission shaft (52) of the transmission gear (55) passes through the left side wall of the transmission box (5) and is fixedly connected to the fixed rod (54). The right end of the transmission shaft (52) of the transmission gear (55) passes through the right side wall of the transmission box (5) and is connected to the positioning mechanism (53).

6. The small aircraft fuselage rotating bracket according to claim 5, characterized in that: The positioning mechanism (53) includes a positioning disk (531), a positioning block (532) and a pin shaft (533). The positioning disk (531) is fixed on the right side wall of the transmission box (5). A number of positioning holes (534) evenly distributed in the circumferential direction are opened on the positioning disk (531). The right end of the transmission shaft (52) of the transmission gear (55) passes through the positioning disk (531), and the positioning block (532) is fixed on the right end of the transmission shaft (52). A through hole (21) is opened on the positioning block (532). The pin shaft (533) passes through the through hole (21) and is inserted into the positioning hole (534).

7. The small aircraft fuselage rotating bracket according to claim 1, characterized in that: A limit groove (62) is opened on the limit ring (6). The slewing bearing (61) is fixed in the limit groove (62) by bolts.

8. The small aircraft fuselage rotating bracket according to claim 1, characterized in that: A rubber layer (63) is adhesively fixed to the inner ring wall of the slewing bearing (61).

9. The small aircraft fuselage rotating bracket according to claim 1, characterized in that: The lowest height of the fixed rod (54) is higher than that of the support plate (2), and placing grooves are formed in the support plate (2).

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