Helicopter main propeller hub automatic inclinator comprehensive bracket

Abstract

The invention relates to the technical field of helicopter maintenance brackets, in particular to a comprehensive bracket for an automatic inclinator of a main propeller hub of a helicopter. According to the technical scheme, the folding propeller comprises a folding bracket, a main propeller hub connector and an automatic inclinator connector, the folding bracket comprises a fixing support, a traction rod is arranged at the connecting end of a traction rod connecting base, rotating supports are arranged on the two sides of a main transverse rod, and a piston rod assembly is arranged at the end, away from the traction rod, of the fixing support. By adopting folding and telescopic structures and the like, the small-sized design of the product is realized, and the transportation size is small; the universality of main propeller hubs and automatic inclinators of different machine types is realized in a mode of replacing the joints, and the universal joint has the characteristic of good generalization; the bracket is simple in overall structure and convenient to use and has good reliability and maintainability, the telescopic rod is additionally arranged, the automatic inclinator and the vibration absorber connector are additionally arranged on the telescopic rod, and the function of storing the main propeller hub, the automatic inclinator and the vibration absorber at the same time is achieved.

Description

Technical Field

[0001] This invention relates to the field of helicopter maintenance bracket technology, and in particular to a helicopter main rotor hub automatic swashplate integrated bracket. Background Technology

[0002] The helicopter main rotor hub and automatic swashplate require regular maintenance and repair during use. This process necessitates disassembling the main rotor hub and automatic swashplate, hoisting them to the ground, and utilizing specialized brackets for support and short-distance movement. Existing brackets typically only accommodate the main rotor hub or automatic swashplate, requiring two sets of brackets for maintenance. Some models also require the placement of vibration dampers, necessitating three sets of brackets. Therefore, the inspection and maintenance of the helicopter main rotor hub and automatic swashplate require the coordinated use of multiple pieces of equipment, making the operation cumbersome. To address this, we propose a comprehensive bracket for the helicopter main rotor hub and automatic swashplate. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the background art by proposing an integrated bracket for the automatic swashplate of the helicopter main rotor hub.

[0004] The technical solution of this invention: A helicopter main rotor hub automatic swashplate integrated bracket, comprising a folding bracket, a main rotor hub connector, and an automatic swashplate connector. The folding bracket includes a fixed support, which includes a main crossbar. Fixed supports are provided at the middle positions on both sides of the main crossbar. Diagonal braces are provided at both ends of the upper part of the main crossbar. A support rod connector is provided at the end of each diagonal brace away from the main crossbar. A traction rod hook is provided on one set of diagonal braces. A traction rod connecting seat is provided at one end of the main crossbar. A telescopic adapter sleeve is provided at the other end of the main crossbar. Moving wheel mounting plates are provided at both ends of the lower side of the main crossbar. A traction rod is provided at the connecting end of the traction rod connecting seat. The traction rod includes an aluminum tube one and an aluminum tube two. A folding connector is provided between the aluminum tube one and the aluminum tube two. A connector is provided at the end of the aluminum tube one away from the aluminum tube two. A connecting head is provided at the end of the aluminum tube two away from the aluminum tube one. The traction ring has a support on the outer side of the aluminum tube 2. Rotating brackets are provided on both sides of the main crossbar. Each rotating bracket includes a rotating crossbar, with a rotating joint at one end. A diagonal brace 2 is provided above the rotating crossbar, with a support joint 2 at the end of the diagonal brace 2 away from the rotating crossbar. A movable wheel mounting plate 2 is provided below the end of the rotating crossbar away from the rotating joint, with a universal wheel on one side of the movable wheel mounting plate 2. A piston rod assembly is provided at the end of the fixed bracket away from the traction rod. The piston rod assembly includes a telescopic crossbar, with a longitudinal rod at one end. Both ends of the longitudinal rod have raised movable wheel mounting plates below them. The main propeller hub joint is available in four specifications: Z-XX, Z-OH, Z-AO, and Z-AA. The automatic tilter joint is available in two models: a self-tilting universal joint and a Z-AA self-tilting joint.

[0005] Preferably, the mounting end of the fixed support is installed corresponding to the main crossbar, one end of the first diagonal brace is installed corresponding to the main crossbar, and each set of the first diagonal brace is provided with a first brace reinforcing rib on the outer side of the end near the main crossbar. One side of the first brace reinforcing rib is installed corresponding to the main crossbar, and the other side of the first brace reinforcing rib is installed corresponding to the first diagonal brace. The mounting end of the first brace joint is installed corresponding to the top of the first diagonal brace, and the mounting end of the traction rod hook is installed corresponding to the outer side of a set of the first diagonal brace.

[0006] Preferably, the mounting end of the first movable wheel mounting plate is installed corresponding to the main crossbar, and a first directional wheel is provided below each of the two sets of first movable wheel mounting plates, with the mounting end of the first directional wheel installed corresponding to the first movable wheel mounting plate.

[0007] Preferably, one end of the folding joint is installed corresponding to one end of the first aluminum tube, the other end of the folding joint is installed corresponding to one end of the second aluminum tube, the mounting end of the connector is installed corresponding to the other end of the first aluminum tube, the traction rod connecting seat is installed corresponding to the connector, the mounting end of the traction ring is installed corresponding to the other end of the second aluminum tube, the mounting end of the support is installed corresponding to the second aluminum tube, and when the traction rod is in the retracted state, the traction ring and the traction rod hook are interlocked.

[0008] Preferably, the mounting end of the rotary joint is installed corresponding to one end of the rotating crossbar, the rotary joint is installed corresponding to the fixed support, and both the rotary joint and the fixed support have mounting holes with pins installed in the mounting holes. One end of the second diagonal brace is installed corresponding to the top of the rotating crossbar. A second brace reinforcing rib is provided between one side of the second diagonal brace and one side of the rotating crossbar. One side of the second brace reinforcing rib is installed corresponding to one side of the rotating crossbar, and the other side of the second brace reinforcing rib is installed corresponding to one side of the second diagonal brace. The mounting end of the second brace joint is installed corresponding to the top of the second diagonal brace. A support sleeve is provided between the second brace joint and the first brace joint. The second brace joint and the first brace joint are respectively installed corresponding to the outer ring of the support sleeve. The mounting end of the main propeller hub joint is installed corresponding to the support sleeve.

[0009] Preferably, the mounting end of the second movable wheel mounting plate is installed correspondingly to the rotating crossbar, and the mounting end of the omnidirectional wheel is installed correspondingly to the second movable wheel mounting plate.

[0010] Preferably, one end of the telescopic crossbar is installed at the middle position of one side of the longitudinal bar, the telescopic crossbar and the longitudinal bar are arranged in a "T" shape, the telescopic crossbar is installed correspondingly to the telescopic adapter sleeve, the mounting end of the heightening moving wheel mounting plate is installed correspondingly to the longitudinal bar, and a second directional wheel is provided below the heightening moving wheel mounting plate, the mounting end of the second directional wheel is installed correspondingly to the heightening moving wheel mounting plate.

[0011] Preferably, the telescopic crossbar has an extension state fixing hole, a retracted state fixing hole, a Z-AA vibration absorber joint mounting hole, a self-tilting universal joint mounting hole, and a Z-AA self-tilting joint mounting hole on its side. Limiting holes are provided on the upper side of both the telescopic crossbar and the main crossbar. When the automatic tilter joint is in the installation state, it is adapted to be installed with the Z-AA vibration absorber joint mounting hole, the self-tilting universal joint mounting hole, and the Z-AA self-tilting joint mounting hole.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] This invention employs folding and telescopic structures to achieve a miniaturized product design, resulting in a small transport volume. By replacing the connectors, it achieves universality for main propeller hubs and automatic swashplates of different models, demonstrating excellent versatility. The overall bracket structure is simple, easy to use, and has good reliability and maintainability. By adding a telescopic rod and attaching automatic swashplate and vibration absorber connectors to the telescopic rod, it can simultaneously store the main propeller hub, automatic swashplate, and vibration absorber. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the layout for use of the present invention;

[0016] Figure 3 This is a schematic diagram of the folding bracket in the unfolded state in this invention;

[0017] Figure 4 This is a schematic diagram of the folding bracket in the folded state in this invention;

[0018] Figure 5 This is a schematic diagram of the structure of the fixing bracket in this invention;

[0019] Figure 6 This is a schematic diagram of the traction rod in this invention;

[0020] Figure 7 This is a schematic diagram of the rotating support structure in this invention;

[0021] Figure 8 This is a schematic diagram of the piston rod assembly in this invention;

[0022] Figure 9 This is a schematic diagram of the structure of the heightened moving wheel mounting plate in this invention.

[0023] Attached reference numerals: 1. Folding bracket; 11. Fixed bracket; 111. Main crossbar; 112. Fixed support; 113. Diagonal brace one; 114. Support rod joint one; 115. Traction rod hook; 116. Traction rod connecting seat; 117. Telescopic adapter sleeve; 118. Moving wheel mounting plate one; 12. Traction rod; 121. Aluminum tube one; 122. Aluminum tube two; 123. Folding joint; 124. Connector; 125. Traction ring; 126. Support; 13. Rotating bracket; 131. Rotating crossbar; 132. Rotating joint; 133. Diagonal brace two; 134. Support rod joint two; 135. Second mounting plate for the movable wheel; 136. Universal wheel; 14. Piston rod assembly; 141. Telescopic crossbar; 142. Longitudinal bar; 143. Heightened mounting plate for the movable wheel; 2. Main propeller hub joint; 3. Automatic tilter joint; 5. First strut reinforcing rib; 6. First directional wheel; 7. Pin; 8. Second strut reinforcing rib; 9. Second directional wheel; 10. Support sleeve; 101. Extended state fixing hole; 102. Retracted state fixing hole; 103. Z-AA vibration absorber joint mounting hole; 104. Self-tilting universal joint mounting hole; 105. Z-AA self-tilting joint mounting hole; 106. Limiting hole. Detailed Implementation

[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Example

[0026] like Figures 1 to 8 As shown, the present invention proposes a helicopter main rotor hub automatic swashplate integrated bracket, including a folding bracket 1, a main rotor hub connector 2, and an automatic swashplate connector 3. The main rotor hub connector 2 is available in four specifications: Z-XX main rotor hub connector, Z-OH main rotor hub connector, Z-AO main rotor hub connector, and Z-AA main rotor hub connector. The automatic swashplate connector 3 is available in two models: a universal self-tilting connector and a Z-AA self-tilting connector. The universal self-tilting connector can be used to place the moving and stationary ring components of the Z-XX, Z-OH, and Z-AO automatic swashplates. The assembly of the folding bracket 1, main rotor hub connector 2, and automatic swashplate connector 3 can be adapted to different models of main rotor hub connectors and self-tilting connectors. The main rotor hub connector 2 and automatic swashplate connector 3 can be quickly disassembled, assembled, and moved short distances by simply replacing them with the appropriate models according to the helicopter maintenance requirements.

[0027] The folding bracket 1 includes a fixed support 11, which includes a main crossbar 111. Fixed supports 112 are provided at the middle positions on both sides of the main crossbar 111, with the mounting ends of the fixed supports 112 corresponding to the main crossbar 111. The fixed supports 112 are fixedly connected to the main crossbar 111. Diagonal braces 113 are provided at both ends of the upper part of the main crossbar 111, with one end of each diagonal brace 113 corresponding to the main crossbar 111 and fixedly connected to it. Each set of diagonal braces 113 has a reinforcing rib 5 on the outer side of the end closest to the main crossbar 111. One side of the strut reinforcing rib 5 is installed corresponding to the main horizontal bar 111, and the other side of the strut reinforcing rib 5 is installed corresponding to the diagonal brace 113. Both sides of the strut reinforcing rib 5 are fixedly connected to the main horizontal bar 111 and the diagonal brace 113, respectively. The strut reinforcing rib 5 can improve the stability of the diagonal brace 113 installed on the main horizontal bar 111. A strut connector 114 is provided at the end of the diagonal brace 113 away from the main horizontal bar 111. The installation end of the strut connector 114 is installed corresponding to the top of the diagonal brace 113. The strut connector 114 is fixedly connected to the diagonal brace 113. A set of diagonal braces 111... The main crossbar 111 is equipped with a traction rod hook 115. The mounting end of the traction rod hook 115 is installed corresponding to the outer side of a set of diagonal braces 113. The traction rod hook 115 is fixedly connected to the diagonal braces 113. One end of the main crossbar 111 is equipped with a traction rod connecting seat 116, which is fixedly connected to the main crossbar 111. The other end of the main crossbar 111 is equipped with a telescopic adapter sleeve 117, which is fixedly connected to the inner ring of the main crossbar 111. At both ends of the lower side of the main crossbar 111, there are movable wheel mounting plates 118. The mounting ends of the movable wheel mounting plates 118 are connected to the main crossbar 111. The fixed bracket 11 is installed in a corresponding manner. The movable wheel mounting plate 118 is fixedly connected to the main crossbar 111. A directional wheel 6 is provided below each of the two sets of movable wheel mounting plates 118. The mounting end of the directional wheel 6 is installed correspondingly to the movable wheel mounting plate 118. The mounting end of the directional wheel 6 is fixedly connected to the support rod reinforcing rib 8. The setting of the directional wheel 6 can make the fixed bracket 11 easy to move, thereby facilitating the operator to move the equipment under maintenance. The fixed bracket 11 has a simple overall structure and can be well connected and cooperated with the traction rod 12, the rotating bracket 13 and the piston rod assembly 14, while providing stable load-bearing support for the entire device.

[0028] Rotary supports 13 are provided on both sides of the main crossbar 111. Each rotary support 13 includes a rotating crossbar 131. A rotary joint 132 is provided at one end of the rotating crossbar 131. The mounting end of the rotary joint 132 is installed correspondingly to one end of the rotating crossbar 131. The rotary joint 132 is fixedly connected to the rotating crossbar 131 and correspondingly installed to a fixed support 112. The rotary joint 132 and the fixed support 112 are rotatably connected. Mounting holes are provided on both the rotary joint 132 and the fixed support 112, and pins 7 are installed in these holes. The pins 7 are compatible with the mounting holes. The arrangement of the rotary joint 132 and the fixed support 112 allows the rotary support 13 and the fixed support 111 to cooperate in a retracted or extended state, facilitating operational needs. To facilitate storage while also improving structural integrity, a second diagonal brace 133 is installed above the rotating horizontal bar 131. One end of the second diagonal brace 133 is installed correspondingly to the top of the rotating horizontal bar 131, and the second diagonal brace 133 is fixedly connected to the rotating horizontal bar 131. A second reinforcing rib 28 is installed between one side of the second diagonal brace 133 and one side of the rotating horizontal bar 131. One side of the second reinforcing rib 28 is installed correspondingly to one side of the rotating horizontal bar 131, and the other side of the second reinforcing rib 28 is installed correspondingly to one side of the second diagonal brace 133. Both sides of the second reinforcing rib 28 are fixedly connected to the rotating horizontal bar 131 and the second diagonal brace 133, respectively. The installation of the second reinforcing rib 28 enhances the stability of the second diagonal brace 133 in the installed state and improves its load-bearing capacity. A second strut connector 134 is provided at the end away from the rotating crossbar 131. The mounting end of the second strut connector 134 corresponds to the top end of the second diagonal strut 133. The second strut connector 134 is fixedly connected to the second diagonal strut 133. A support sleeve 10 is provided between the second strut connector 134 and the first strut connector 114. The second strut connector 134 and the first strut connector 114 are respectively installed corresponding to the outer ring of the support sleeve 10. The other mounting ends of the second strut connector 134 and the first strut connector 114 are fixedly connected to the outer ring of the support sleeve 10. The mounting end of the main rotor hub connector 2 is installed corresponding to the support sleeve 10. The arrangement of the first strut connector 114 and the second strut connector 134 allows them to cooperate with the support sleeve 10 to assemble the main rotor hub connector 2. It can also meet the operational needs of unfolding and retracting between the rotating support 13 and the fixed support 11. A second movable wheel mounting plate 135 is provided below the end of the rotating crossbar 131 away from the rotating joint 132. The mounting end of the second movable wheel mounting plate 135 is installed correspondingly to the rotating crossbar 131, and the second movable wheel mounting plate 135 is fixedly connected to the rotating crossbar 131. A caster wheel 136 is provided on one side of the second movable wheel mounting plate 135, and the mounting end of the caster wheel 136 is installed correspondingly to the second movable wheel mounting plate 135, and the caster wheel 136 is fixedly connected to the lower part of the second movable wheel mounting plate 135. The installation of the caster wheel 136 facilitates good steering function for the rotating support 13 when it is in the unfolded or retracted state, while also meeting the operator's needs for equipment transfer operations.The rotating bracket 13 is designed to better cooperate with the fixed bracket 11 to meet the needs of disassembling, assembling, and transporting the helicopter's main rotor hub. It can also be folded up, reducing the space occupied by excessively large equipment and facilitating storage.

[0029] A piston rod assembly 14 is provided at the end of the fixed bracket 11 away from the traction rod 12. The piston rod assembly 14 includes a telescopic crossbar 141, and a longitudinal rod 142 is provided at one end of the telescopic crossbar 141. One end of the telescopic crossbar 141 is installed at the middle position of one side of the longitudinal rod 142. The telescopic crossbar 141 and the longitudinal rod 142 are fixedly connected. The telescopic crossbar 141 and the longitudinal rod 142 are arranged in a "T" shape. The "T" shape of the telescopic crossbar 141 and the longitudinal rod 142 can better cooperate with the fixed bracket 11 and the rotating bracket 13 to improve the overall stability of the equipment. The telescopic crossbar 141 is installed correspondingly to the telescopic adapter sleeve 117. One end of the telescopic crossbar 141 is inserted into the inner ring of the telescopic adapter sleeve 117. The telescopic adapter sleeve 117 fits tightly, and the telescopic crossbar 141 is slidably connected to the telescopic adapter sleeve 117. When the device is in the retracted state, the telescopic crossbar 141 can be inserted entirely into the main crossbar 111, thereby further reducing the size of the device and making it more portable. Both ends of the telescopic crossbar 141 and the longitudinal bar 142 are equipped with height-adjustable wheel mounting plates 143. The mounting ends of the height-adjustable wheel mounting plates 143 are installed correspondingly to the longitudinal bar 142, and are fixedly connected to the longitudinal bar 142. Below the height-adjustable wheel mounting plates 143, there are two directional wheels 9. The mounting ends of the two directional wheels 9 are installed correspondingly to the height-adjustable wheel mounting plates 143, and are fixedly connected to the height-adjustable wheel mounting plates 143. Figure 9As shown, the heightened mounting plate 143 of the movable wheel can prevent the piston rod assembly 14 from being at a different height from the bottom side of the fixed bracket 11 due to the smaller size of the telescopic crossbar 141 compared to the main crossbar 111. This allows the second directional wheel 9 to make better contact with the ground. The second directional wheel 9 can cooperate with the first directional wheel 6 and the universal wheel 136 to make the equipment more stable in transporting accessories such as the main propeller hub joint. The telescopic crossbar 141 has a fixed hole 101 for the extended state, a fixed hole 102 for the retracted state, a mounting hole 103 for the Z-AA vibration absorber joint, a mounting hole 104 for the self-tilting universal joint, and a mounting hole 105 for the Z-AA self-tilting joint on its side. The fixed hole 101 for the extended state can be fixed with a pin when the telescopic crossbar 141 is in the extended state. The fixed hole 102 for the retracted state can be fixed with a pin when the telescopic crossbar 141 is in the retracted state. When the rod 141 is in the retracted state, it is fixed. Limiting holes 106 are provided on the upper side of both the telescopic crossbar 141 and the main crossbar 111. The limiting holes 106 can limit the telescopic crossbar 141 when it is inserted into the main crossbar 111, preventing the telescopic crossbar 141 from detaching from the main crossbar 111 when it is extended. When the automatic tilter connector 3 is in the installed state, it is adapted to the Z-AA vibration absorber connector mounting hole 103, the self-tilting universal connector mounting hole 104, and the Z-AA self-tilting connector mounting hole 105. The Z-AA vibration absorber connector mounting hole 103, the self-tilting universal connector mounting hole 104, and the Z-AA self-tilting connector mounting hole 105 can be adapted to the automatic tilter connector 3 according to the operation requirements, and can also meet the installation requirements of the vibration absorber connector. Thus, this device can meet the disassembly, assembly, and transportation requirements of the main rotor hub, the self-tilting connector, and the vibration absorber.

[0030] A traction rod 12 is provided at the connecting end of the traction rod connecting seat 116. The traction rod 12 includes an aluminum tube 121 and an aluminum tube 122. A folding joint 123 is provided between the aluminum tube 121 and the aluminum tube 122. One end of the folding joint 123 is installed corresponding to one end of the aluminum tube 121, and the other end of the folding joint 123 is installed corresponding to one end of the aluminum tube 122. The folding joint 123 is fixedly connected to the adjacent ends of the aluminum tube 121 and the aluminum tube 122. The folding joint 123 allows the aluminum tube 121 and the aluminum tube 122 to be folded when the traction rod 12 is not in use. A connector 124 is provided at the end of the aluminum tube 121 away from the aluminum tube 122. The mounting end of the connector 124 is installed corresponding to the other end of the aluminum tube 121. The connector 124 is fixedly connected to the aluminum tube 121. The traction rod connecting seat 116 is installed corresponding to the connector 124. The connector 124 and the aluminum tube 121 are fixedly connected. The traction rod connecting seat 116 is rotatably connected. The connection head 124 and the traction rod connecting seat 116 can stably assemble the traction rod 12 with the fixed bracket 11. A traction ring 125 is provided on the end of the aluminum tube 122 away from the aluminum tube 121. The installation end of the traction ring 125 is installed corresponding to the other end of the aluminum tube 122. The traction ring 125 is fixedly connected to the aluminum tube 122. The traction ring 125 facilitates the operator to pull the equipment. When the traction rod 12 is in the retracted state, the traction ring 125 and the traction rod hook 115 are interlocked. A support 126 is provided on the outside of the aluminum tube 122. The installation end of the support 126 is installed corresponding to the aluminum tube 122. The support 126 is fixedly connected to the aluminum tube 122. The support 126 can support the aluminum tube 122 when it is placed on the ground. The traction rod 12 can effectively enable the operator to pull and transport the device, improving the transport efficiency.

[0031] In this embodiment, when the operator needs to inspect and maintain components such as the main rotor hub of the helicopter, the main rotor hub is supported by the main rotor hub joint 2 through this device, and the load is transferred to the support sleeve 10 on the folding bracket 1; the support sleeve 10 is supported by the cooperation of the first diagonal brace 113 and the second diagonal brace 133, and the load is transferred to the main crossbar 111 and the rotating crossbar 131; the directional wheel 6 and the universal wheel 136 below the main crossbar 111 and the rotating crossbar 131 are in contact with the ground, and play a final support role. The automatic tilter joint 3 is connected to the self-tilting channel. The device is directly mounted on the telescopic crossbar 141 using the connector mounting hole 104 and the Z-AA self-tilting connector mounting hole 105. The longitudinal bar 142 is equipped with a second directional wheel 9, which contacts the ground and provides support. All components are connected by pins, quick-release pins, and bolts. The entire force transmission process is reliable and the structure is stable. After the operator places the main rotor hub automatic swashplate component that needs to be inspected and maintained on the device, the operator can use the towing rod 12 to perform short-distance towing and transfer of the device.

[0032] The above specific embodiments are merely preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A comprehensive holder of a helicopter main hub automatic tilt-rotor, comprising a folding holder (1), a main hub joint (2) and an automatic tilt-rotor joint (3), characterized in that: The folding bracket (1) includes a fixed support (11), the fixed support (11) includes a main cross bar (111), the both sides of the main cross bar (111) are provided with a fixed support (112) at the middle position, the both ends of the upper side of the main cross bar (111) are provided with a inclined support rod one (113), the end of the inclined support rod one (113) away from the main cross bar (111) is provided with a support rod joint one (114), a group of the inclined support rod one (113) is provided with a traction rod hook (115), one end of the main cross bar (111) is provided with a traction rod connecting seat (116), the other end of the main cross bar (111) is provided with a telescopic adapter sleeve (117), the both ends of the lower side of the main cross bar (111) are provided with a mobile wheel mounting plate one (118), the connecting end of the traction rod connecting seat (116) is provided with a traction rod (12), the traction rod (12) includes an aluminum pipe one (121) and an aluminum pipe two (122), the aluminum pipe one (121) and the aluminum pipe two (122) are provided with a folding joint (123), the end of the aluminum pipe one (121) away from the aluminum pipe two (122) is provided with a connecting head (124), the end of the aluminum pipe two (122) away from the aluminum pipe one (121) is provided with a traction ring (125), the outer side of the aluminum pipe two (122) is provided with a support (126), the both sides of the main cross bar (111) are provided with a rotating support (13), the rotating support (13) includes a rotating cross bar (131), one end of the rotating cross bar (131) is provided with a rotating joint (132), the upper side of the rotating cross bar (131) is provided with a inclined support rod two (133), the end of the inclined support rod two (133) away from the rotating cross bar (131) is provided with a support rod joint two (134), the end of the rotating cross bar (131) away from the rotating joint (132) is provided with a mobile wheel mounting plate two (135) below, one side of the mobile wheel mounting plate two (135) is provided with a universal wheel (136), the end of the fixed support (11) away from the traction rod (12) is provided with a piston rod assembly (14), the piston rod assembly (14) includes a telescopic cross bar (141), one end of the telescopic cross bar (141) is provided with a vertical rod (142), the both ends of the vertical rod (142) are provided with a heightening mobile wheel mounting plate (143) below, the main hub joint (2) is divided into Z-XX main hub joint, Z-OH main hub joint, Z-AO main hub joint and four kinds of specifications of main hub joint, the automatic tilting joint (3) is divided into two models of self-inclination universal joint and Z-AA self-inclination joint.

2. A collective yoke for a helicopter main hub tilting system according to claim 1, characterized in that, The mounting end of the fixed support (112) is correspondingly mounted with the main cross bar (111), one end of the inclined support bar one (113) is correspondingly mounted with the main cross bar (111), one end outside of each group of the inclined support bar one (113) close to the main cross bar (111) is provided with a support bar reinforcing rib one (5), one side of the support bar reinforcing rib one (5) is correspondingly mounted with the main cross bar (111), the other side of the support bar reinforcing rib one (5) is correspondingly mounted with the inclined support bar one (113), the mounting end of the support bar joint one (114) is correspondingly mounted with the top end of the inclined support bar one (113), the mounting end of the traction bar hook (115) is correspondingly mounted with the outside of one group of the inclined support bar one (113).

3. A collective yoke for a helicopter main hub tilting system according to claim 1, wherein The mounting end of the mobile wheel mounting plate one (118) is correspondingly mounted with the main cross bar (111), the lower part of each group of the mobile wheel mounting plate one (118) is provided with a directional wheel one (6), the mounting end of the directional wheel one (6) is correspondingly mounted with the mobile wheel mounting plate one (118).

4. A collective yoke for a helicopter main rotor hub automatic incidence regulator according to claim 1, characterized in that, One end of the folding joint (123) is correspondingly mounted with one end of the aluminum pipe one (121), the other end of the folding joint (123) is correspondingly mounted with one end of the aluminum pipe two (122), the mounting end of the connecting head (124) is correspondingly mounted with the other end of the aluminum pipe one (121), the traction bar connecting seat (116) is correspondingly mounted with the connecting head (124), the mounting end of the traction ring (125) is correspondingly mounted with the other end of the aluminum pipe two (122), the mounting end of the support (126) is correspondingly mounted with the aluminum pipe two (122), the traction ring (125) and the traction bar hook (115) are buckled with each other when the traction bar (12) is in the folding state.

5. A collective pitch hub for a helicopter main rotor blade according to claim 1, wherein, The mounting end of the rotating joint (132) is correspondingly mounted with one end of the rotating cross bar (131), the rotating joint (132) is correspondingly mounted with the fixed support (112), the rotating joint (132) and the fixed support (112) are both provided with mounting holes, the mounting holes are provided with a pin shaft (7), one end of the inclined support bar two (133) is correspondingly mounted with the upper part of the rotating cross bar (131), a support bar reinforcing rib two (8) is arranged between one side of the inclined support bar two (133) and one side of the rotating cross bar (131), one side of the support bar reinforcing rib two (8) is correspondingly mounted with one side of the rotating cross bar (131), the other side of the support bar reinforcing rib two (8) is correspondingly mounted with one side of the inclined support bar two (133), the mounting end of the support bar joint two (134) is correspondingly mounted with the top end of the inclined support bar two (133), a support sleeve (10) is arranged between the support bar joint two (134) and the support bar joint one (114), the support bar joint two (134) and the support bar joint one (114) are both correspondingly mounted with the outer ring of the support sleeve (10), the mounting end of the main hub joint (2) is correspondingly mounted with the support sleeve (10).

6. A collective pitch hub for a helicopter main rotor blade according to claim 1, wherein The mounting end of the mobile wheel mounting plate two (135) is correspondingly mounted with the rotating cross bar (131), the mounting end of the universal wheel (136) is correspondingly mounted with the mobile wheel mounting plate two (135).

7. A collective pitch hub for a helicopter main rotor blade according to claim 1 wherein, One end of the telescopic cross bar (141) is correspondingly installed at the middle position of one side of the longitudinal bar (142), the telescopic cross bar (141) and the longitudinal bar (142) are arranged in a "T" shape, the telescopic cross bar (141) is correspondingly installed with the telescopic adapter sleeve (117), the installation end of the heightening movable wheel installation plate (143) is correspondingly installed with the longitudinal bar (142), the lower portion of the heightening movable wheel installation plate (143) is provided with a directional wheel two (9), and the installation end of the directional wheel two (9) is correspondingly installed with the heightening movable wheel installation plate (143).

8. A collective pitch hub for a helicopter main rotor blade according to claim 1, wherein, The side surface of the telescopic cross bar (141) is respectively provided with an elongated state fixing hole (101), a folding state fixing hole (102), a Z-AA vibration absorber joint installation hole (103), a self-inclination universal joint installation hole (104) and a Z-AA self-inclination joint installation hole (105), the upper side of the telescopic cross bar (141) and the main cross bar (111) is respectively provided with a limiting hole (106), and the automatic inclinator joint (3) is adaptively installed with the Z-AA vibration absorber joint installation hole (103), the self-inclination universal joint installation hole (104) and the Z-AA self-inclination joint installation hole (105) in the installed state.

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