A hot straightening device for hollow tube blanks used in the manufacture of aircraft landing gear

Abstract

The present invention relates to the field of mechanical manufacturing technology, and discloses a hot straightening device for hollow tube blanks for manufacturing aircraft landing gear, including a machine base, two machine bases are provided, and vertical frames are fixedly installed on the lower part of the outer surface of the two machine bases, and the lower ends of the two vertical frames are commonly fixedly connected to a bottom plate, and the upper end of the bottom plate is fixedly installed with a base, and a straightening mechanism is commonly fixedly installed between the two machine bases, and the ends of the two machine bases away from the straightening mechanism are commonly movably connected to a transmission mechanism, and the transmission mechanism and the straightening mechanism are both arranged coaxially with the machine base; the straightening mechanism includes a No. 1 fixed plate and a No. 2 fixed plate, and a three-way opposite straightening device is rotatably connected between the No. 1 fixed plate and the No. 2 fixed plate. The present invention has a compact structure and strong adaptability, and can perform efficient and accurate straightening treatment on hollow tube blanks of different diameters, which significantly improves the production efficiency and product quality of aircraft landing gear manufacturing, and can meet the needs of different application scenarios.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical manufacturing, and in particular to a hollow tube blank hot straightening device for manufacturing aircraft landing gear. Background Art

[0002] In the manufacturing process of modern aircraft landing gear, the precise straightening of hollow tube billets is a key link to ensure structural strength and durability. However, existing straightening technologies still have several limitations. Traditional straightening devices mostly use a one-way straightening method. Although it can meet basic needs to a certain extent, it cannot completely eliminate internal residual stress, resulting in slight deformation or even cracks in the straightened tube billets during subsequent processing or service. In addition, these devices usually rely on manual positioning and clamping, which is cumbersome and time-consuming to operate, seriously affecting production efficiency. More importantly, the existing equipment has poor adaptability to hollow tube billets of different diameters and lengths, and requires frequent parameter adjustments, which increases operational complexity and maintenance costs. Insufficient stability of the transmission system is also a common problem. The hollow tube billets are prone to offset or vibration during transmission, further affecting the straightening accuracy and product quality rate. Therefore, we propose a hot straightening device for hollow tube billets in the manufacture of aircraft landing gear. Summary of the invention

[0003] The main purpose of the present invention is to provide a hollow tube blank hot straightening device for manufacturing aircraft landing gear, which can effectively solve the problems in the background technology.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A hot straightening device for hollow tube blanks for manufacturing aircraft landing gears, comprising a machine base, two machine bases are provided, the two machine bases are arranged front and back, a stand is fixedly installed on the lower part of the outer surface of the two machine bases, the lower ends of the two stand are commonly fixedly connected to a bottom plate, the upper end of the bottom plate is fixedly installed with a base, a straightening mechanism is commonly fixedly installed between the two machine bases, one end of the two machine bases away from the straightening mechanism is commonly movably connected to a transmission mechanism, and the transmission mechanism and the straightening mechanism are both arranged coaxially with the machine base;

[0006] The straightening mechanism comprises a No. 1 fixed plate and a No. 2 fixed plate, wherein the No. 1 fixed plate and the No. 2 fixed plate are respectively fixedly connected to the machine bases on both sides, and a three-way opposing straightening device is rotatably connected between the No. 1 fixed plate and the No. 2 fixed plate.

[0007] As a further improvement of the above scheme, a mounting plate is fixedly welded to the upper portion of the outer surface of the No. 1 fixing plate, avoidance grooves are provided on the front and rear sides of the outer surfaces of the No. 1 fixing plate and the No. 2 fixing plate, and three support rods are fixedly installed on the end surface of one side of the No. 1 fixing plate close to the three-way straightening device, and the three support rods are distributed in a circular array.

[0008] By adopting the above technical solution: through the coordinated work of the conveying mechanism and the straightening mechanism, the hollow tube blank is straightened simultaneously during the conveying process, which not only makes the hollow tube blank continuously straightened during the conveying process, realizes continuous operation, reduces intermediate links, and improves the overall smoothness of the production line, thereby significantly improving production efficiency, and the hollow tube blank is subjected to continuous straightening force during the conveying process, avoiding damage caused by multiple pauses and repositioning, thereby improving product quality.

[0009] As a further improvement of the above scheme, the three-way counter-striking straightening device includes a transmission disk and a forward and reverse motor, the transmission disk is rotatably connected between the No. 1 fixed plate and the No. 2 fixed plate, the outer surface of the transmission disk is fixedly sleeved with a transmission ring, the outer surface of the transmission ring is integrally formed with transmission teeth, the forward and reverse motor is fixedly installed on the mounting plate, and the output end of the forward and reverse motor is fixedly installed with a driving gear through a rotating shaft, and the driving gear corresponds to the transmission teeth and is meshed with each other.

[0010] By adopting the above technical solution: the forward and reverse motors mesh with the transmission teeth on the transmission ring through the driving gear, driving the transmission disk to rotate, thereby ensuring high precision and reliability of the transmission process.

[0011] As a further improvement of the above scheme, the outer surface of the transmission disk is provided with three arc grooves connected to the inside of the transmission disk, and the three arc grooves are arranged in a circular array with the middle of the transmission disk as the center, and straightening parts are movably installed in the three arc grooves, and the three straightening parts are movably connected to three support rods respectively.

[0012] By adopting the above technical solution: the three-way straightening device straightens the hollow tube blank from different directions through three straightening parts, eliminating the residual stress that may be caused by straightening in a single direction, improving the straightening effect, and making the hollow tube blank more evenly stressed during the straightening process, thereby improving the batch consistency of the product, avoiding deformation or damage caused by excessive local stress, and ensuring that the surface of the straightened tube blank is smooth and has high straightness, so that the straightened hollow tube blank meets high quality standards and meets the needs of different application scenarios.

[0013] As a further improvement of the above-mentioned scheme, the straightening member includes a limiting sleeve, and movable rods are fixedly installed on both front and rear ends of the limiting sleeve, and the limiting sleeve is movably connected in the arc groove through the movable rod, and a straightening push rod is slidably connected in the limiting sleeve, one end of the straightening push rod is movably connected to the support rod, and a straightening seat is fixedly installed on the end of the straightening push rod away from the support rod, and a straightening roller is rotatably connected in the straightening seat.

[0014] By adopting the above technical solution: the sliding design of the straightening mandrel in the limiting sliding sleeve enables the straightening roller to fit closely to the surface of the hollow tube blank, ensuring uniform force during the straightening process and avoiding deformation or damage caused by excessive local force.

[0015] As a further improvement of the above scheme, the conveying mechanism includes a positioning turntable and an electric telescopic rod, wherein two positioning turntables are provided and are rotatably connected to the side of the two machine bases away from the opposite ends, and the outer surfaces of the two positioning turntables are integrally formed with connecting ears, and a connecting rod is fixedly installed between the two connecting ears. The lower part of the electric telescopic rod is movably connected to the base through a rotating shaft, and a connecting seat is fixedly installed at the output end of the electric telescopic rod, and the connecting seat is sleeved on the connecting rod and movably connected to the connecting rod.

[0016] By adopting the above technical solution: the design of the transmission mechanism allows the hollow tube blanks with different diameters to be adapted by adjusting the telescopic length of the electric telescopic rod and the angle of the positioning turntable, thereby improving the versatility and flexibility of the equipment.

[0017] As a further improvement of the above solution, two active transmission components and two auxiliary transmission components are provided at one end of the two positioning turntables away from the base, and the two auxiliary transmission components and the two active transmission components are distributed perpendicularly to each other and do not contact each other.

[0018] By adopting the above technical solution: the active transmission parts and the auxiliary transmission parts cooperate with each other to ensure the stability and straightness of the hollow tube billet during the transmission process, thereby ensuring the accurate position of the hollow tube billet when entering the straightening mechanism, providing a good foundation for straightening.

[0019] As a further improvement of the above solution, the two active transmission members are distributed in parallel up and down with respect to the central axis of the positioning turntable, and the two auxiliary transmission members are distributed in parallel left and right with respect to the central axis of the positioning turntable.

[0020] By adopting the above technical solution: a stable four-point support system is formed to ensure the stability and straightness of the hollow tube billet during the transmission process, and at the same time make the hollow tube billet more evenly stressed during the transmission process, avoiding deformation or damage caused by excessive stress at a single point.

[0021] As a further improvement of the above scheme, the active transmission component includes a No. 1 fixed ear and a No. 1 movable seat, the No. 1 fixed ear is fixedly installed on the positioning turntable, a driving motor is fixedly installed on one end of the No. 1 fixed ear, an active conveying roller is fixedly installed on the output end of the driving motor, and the active conveying roller is movably connected to the No. 1 fixed ear through a bearing, and the No. 1 movable seat is movably installed on the machine base and is sleeved on the active conveying roller and slidably connected to the active conveying roller.

[0022] By adopting the above technical solution: the active conveying roller is driven to rotate by a driving motor, and the active conveying roller generates friction force by contact with the hollow tube blank, so as to push the hollow tube blank forward.

[0023] As a further improvement of the above scheme, the auxiliary transmission component includes a No. 2 fixed ear and a No. 2 movable seat, the No. 2 fixed ear is fixedly installed with the positioning turntable, and a driven conveying roller is rotatably connected in the No. 2 fixed ear, and the No. 2 movable seat is movably installed with the machine base and is sleeved on the driven conveying roller and slidably connected with the driven conveying roller.

[0024] By adopting the above technical solution, the driven conveying roller rotates as the hollow tube blank moves forward, thereby supporting and stabilizing the hollow tube blank and preventing it from deflecting during the transmission process.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. In the present invention, the hollow tube blank is straightened simultaneously during the transmission process through the coordinated work of the conveying mechanism and the straightening mechanism, which not only makes the hollow tube blank continuously straightened during the transmission process, realizes continuous operation, reduces intermediate links, improves the overall smoothness of the production line, and thus significantly improves production efficiency, but also the hollow tube blank is subjected to continuous straightening force during the transmission process, avoids damage caused by multiple pauses and repositioning, and improves product quality.

[0027] 2. In the present invention, the three-way counter-straightening device in the straightening mechanism straightens the hollow tube blank from different directions through three straightening rollers, which not only eliminates the residual stress that may be generated by straightening in a single direction and improves the straightening effect, but also makes the force on the hollow tube blank more uniform during the straightening process, improves the batch consistency of the product, avoids deformation or damage caused by excessive local force, and ensures that the surface of the tube blank after straightening is smooth and the straightness is high, so that the straightened hollow tube blank meets the high quality standards and meets the needs of different application scenarios.

[0028] 3. In the present invention, the conveying mechanism realizes continuous conveying of hollow tube blanks through the coordinated action of the electric telescopic rod and the positioning turntable, without manual intervention, thereby improving production efficiency. The active transmission member and the auxiliary transmission member are designed, and the active conveying roller and the driven conveying roller are used to clamp and fix the hollow tube blank through contact and friction, thereby ensuring the stability and straightness of the hollow tube blank during the transmission process, thereby ensuring the accurate position of the hollow tube blank when entering the straightening mechanism, providing a good foundation for straightening.

[0029] 4. In summary, the present invention flexibly integrates the conveying mechanism and the straightening mechanism into a compact structure, which not only occupies a small area and is suitable for use in a limited space, thereby improving the utilization rate of the workshop, but also enables the conveying mechanism and the straightening mechanism to quickly adapt to hollow tube blanks of different specifications through simple adjustments, which not only expands the application range of the equipment, but also shortens the changeover time and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic diagram of the overall structure of a hollow tube blank hot straightening device for manufacturing an aircraft landing gear according to the present invention from a first perspective;

[0032] Figure 2 A schematic diagram of the overall structure of a hollow tube blank hot straightening device for manufacturing an aircraft landing gear according to the present invention from a second viewing angle;

[0033] Figure 3 It is a schematic diagram of a state in which a hot straightening device for straightening a hollow tube blank for manufacturing an aircraft landing gear according to the present invention is straightening the hollow tube blank;

[0034] Figure 4 It is a schematic diagram of the overall structure of a straightening mechanism of a hollow tube blank hot straightening device for manufacturing an aircraft landing gear according to the present invention;

[0035] Figure 5 A schematic diagram of the composition structure of a straightening mechanism of a hollow tube blank hot straightening device for manufacturing an aircraft landing gear according to the present invention;

[0036] Figure 6 It is a structural schematic diagram of a three-way counter-straightening device of a hollow tube blank hot straightening device for manufacturing an aircraft landing gear according to the present invention;

[0037] Figure 7 It is a partial structural schematic diagram of a three-way counter-straightening device of a hollow tube blank hot straightening device for manufacturing an aircraft landing gear according to the present invention;

[0038] Figure 8 It is a structural schematic diagram of a straightening component of a hollow tube blank hot straightening device for manufacturing an aircraft landing gear according to the present invention;

[0039] Fig. 9 It is a structural schematic diagram of a conveying mechanism of a hollow tube blank hot straightening device for manufacturing an aircraft landing gear according to the present invention;

[0040] Fig.10 The present invention is a schematic diagram of the connection structure of the active transmission member and the auxiliary transmission member and the positioning turntable of a hollow tube blank hot straightening device for manufacturing an aircraft landing gear.

[0041] In the figure: 1, machine base; 2, stand; 3, bottom plate; 4, transmission mechanism; 41, positioning turntable; 42, connecting ear; 43, connecting rod; 44, electric telescopic rod; 45, connecting seat; 46, active transmission member; 461, No. 1 fixed ear; 462, active conveying roller; 463, No. 1 movable seat; 464, driving motor; 47, auxiliary transmission member; 471, No. 2 fixed ear; 472, driven conveying roller; 473, No. 2 movable seat; 5, straightening mechanism; 51, No. 1 fixed ear Plate; 511, mounting plate; 512, avoidance groove; 52, No. 2 fixed plate; 53, three-way counter-chasing straightening device; 531, transmission plate; 532, forward and reverse motor; 533, driving gear; 534, transmission ring; 535, transmission teeth; 536, arc groove; 537, straightening piece; 5371, limiting sliding sleeve; 5372, movable rod; 5373, straightening mandrel; 5374, straightening seat; 5375, straightening roller; 54, support rod; 6, base; 7, hollow tube blank. DETAILED DESCRIPTION

[0042] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0043] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0046] A hot straightening device for hollow tube blanks used in the manufacture of aircraft landing gear, such as Figure 1-Figure 3 As shown, it includes a machine base 1. Two machine bases 1 are provided. The two machine bases 1 are arranged front and back. A stand 2 is fixedly installed on the lower part of the outer surface of the two machine bases 1. The lower ends of the two stand 2 are commonly fixedly connected with a bottom plate 3. The upper end of the bottom plate 3 is fixedly installed with a base 6. A straightening mechanism 5 is commonly fixedly installed between the two machine bases 1. The ends of the two machine bases 1 away from the straightening mechanism 5 are commonly movably connected with a conveying mechanism 4, and the conveying mechanism 4 and the straightening mechanism 5 are both coaxially arranged with the machine base 1.

[0047] like Figure 4-Figure 8 As shown, the straightening mechanism 5 includes a No. 1 fixing plate 51 and a No. 2 fixing plate 52, the No. 1 fixing plate 51 and the No. 2 fixing plate 52 are respectively fixedly connected to the machine base 1 on both sides, and a three-way counter-chasing straightening device 53 is rotatably connected between the No. 1 fixing plate 51 and the No. 2 fixing plate 52; a mounting plate 511 is fixedly welded to the upper part of the outer surface of the No. 1 fixing plate 51, and avoidance grooves 512 are arranged on the front and rear sides of the outer surfaces of the No. 1 fixing plate 51 and the No. 2 fixing plate 52, and the No. 1 fixing plate 51 is close to the three-way counter-chasing straightening device. One side end surface of the device 53 is fixedly installed with three support rods 54, and the three support rods 54 are distributed in a ring array; the three-way counter-straightening device 53 includes a transmission disk 531 and a forward and reverse motor 532, the transmission disk 531 is rotatably connected between the first fixed plate 51 and the second fixed plate 52, the outer surface of the transmission disk 531 is fixedly sleeved with a transmission ring 534, and the outer surface of the transmission ring 534 is integrally formed with transmission teeth 535, the forward and reverse motor 532 is fixedly installed with the mounting plate 511, and the forward and reverse motor 532 The output end of the drive plate 531 is fixedly mounted with a driving gear 533 through a rotating shaft, and the driving gear 533 corresponds to the transmission tooth 535 and meshes with each other; the outer surface of the transmission plate 531 is provided with three arc grooves 536 that communicate with the inside of the transmission plate 531, and the three arc grooves 536 are arranged in a ring array with the middle of the transmission plate 531 as the center, and straightening members 537 are movably mounted in the three arc grooves 536, and the three straightening members 537 are movably connected to the three support rods 54 respectively; the straightening members 537 include The limiting sleeve 5371 comprises a movable rod 5372 fixedly installed at both the front and rear ends of the limiting sleeve 5371, the limiting sleeve 5371 is movably connected in the arc groove 536 through the movable rod 5372, a straightening push rod 5373 is slidably connected in the limiting sleeve 5371, one end of the straightening push rod 5373 is movably connected to the support rod 54, a straightening seat 5374 is fixedly installed at the end of the straightening push rod 5373 away from the support rod 54, and a straightening roller 5375 is rotatably connected in the straightening seat 5374.

[0048] Through the above scheme: the three-way counter-straightening device 53 in the straightening mechanism 5 straightens the hollow tube blank 7 from different directions through three straightening rollers 5375, which not only eliminates the residual stress that may be generated by single-direction straightening and improves the straightening effect, but also makes the hollow tube blank 7 more evenly stressed during the straightening process, improves the batch consistency of the product, avoids deformation or damage caused by excessive local stress, and ensures that the surface of the tube blank after straightening is smooth and has high straightness, so that the straightened hollow tube blank 7 meets the high quality standards and meets the needs of different application scenarios.

[0049] like Fig. 9 As shown, the transmission mechanism 4 includes a positioning turntable 41 and an electric telescopic rod 44. The positioning turntable 41 is provided with two and is rotatably connected to the side of the two machine bases 1 away from the opposite ends. The outer surfaces of the two positioning turntables 41 are integrally formed with connecting ears 42, and a connecting rod 43 is fixedly installed between the two connecting ears 42. The lower part of the electric telescopic rod 44 is movably connected to the base 6 through a rotating shaft. A connecting seat 45 is fixedly installed at the output end of the electric telescopic rod 44, and the connecting seat 45 is sleeved on the connecting rod 43 and movably connected to the connecting rod 43; two active transmission members 46 and two auxiliary transmission members 47 are provided at one end of the two positioning turntables 41 away from the machine base 1, and the two auxiliary transmission members 47 are perpendicularly distributed with the two active transmission members 46 and do not contact each other; the two active transmission members 46 are parallelly distributed up and down with the central axis of the positioning turntable 41, and the two auxiliary transmission members 47 are parallelly distributed left and right with the central axis of the positioning turntable 41.

[0050] Through the above scheme: the conveying mechanism 4 realizes the continuous conveying of the hollow tube blank 7 through the coordinated action of the electric telescopic rod 44 and the positioning turntable 41, without manual intervention, thereby improving the production efficiency. The design of the active transmission member 46 and the auxiliary transmission member 47 ensures the stability and straightness of the hollow tube blank 7 during the transmission process, thereby ensuring the accurate position of the hollow tube blank 7 when entering the straightening mechanism 5, providing a good foundation for straightening.

[0051] like Fig.10As shown, the active transmission member 46 includes a No. 1 fixed ear 461 and a No. 1 movable seat 463, the No. 1 fixed ear 461 is fixedly installed on the positioning turntable 41, a driving motor 464 is fixedly installed on one end of the No. 1 fixed ear 461, an active conveying roller 462 is fixedly installed on the output end of the driving motor 464, and the active conveying roller 462 is movably connected to the No. 1 fixed ear 461 through a bearing, the No. 1 movable seat 463 is movably installed on the machine base 1 and is sleeved on the active conveying roller 462 and is slidably connected to the active conveying roller 462; the auxiliary transmission member 47 includes a No. 2 fixed ear 471 and a No. 2 movable seat 473, the No. 2 fixed ear 471 is fixedly installed on the positioning turntable 41, a driven conveying roller 472 is rotatably connected in the No. 2 fixed ear 471, the No. 2 movable seat 473 is movably installed on the machine base 1 and is sleeved on the driven conveying roller 472 and is slidably connected to the driven conveying roller 472.

[0052] Through the above scheme: the driving motors 464 on the two active transmission members 46 are started, and the active conveying rollers 462 are driven to rotate by the driving motors 464. The active conveying rollers 462 generate friction through contact with the hollow tube blank 7 to push the hollow tube blank 7 forward. At the same time, the driven conveying rollers 472 rotate as the hollow tube blank 7 moves forward, thereby supporting and stabilizing the hollow tube blank 7 and preventing it from shifting during the transmission process.

[0053] During use, this embodiment specifically includes the following steps:

[0054] S1, placing the hollow tube blank 7 at the initial position of the conveying mechanism 4, starting the electric telescopic rod 44, the electric telescopic rod 44 extends to push the connecting rod 43 to move upward, so that the two positioning turntables 41 rotate upward at the same time, at this time, the first fixing ear 461 and the second fixing ear 471 installed on the positioning turntable 41 rotate accordingly, at this time, the two active conveying rollers 462 and the two driven conveying rollers 472 gradually align with the hollow tube blank 7 and clamp and fix the hollow tube blank 7;

[0055] S2, simultaneously starting the driving motors 464 on the two active transmission members 46, driving the active conveying rollers 462 to rotate through the driving motors 464, and the active conveying rollers 462 generate friction force by contacting with the hollow tube 7, pushing the hollow tube 7 forward, and at the same time, the driven conveying rollers 472 rotate as the hollow tube 7 moves forward, playing the role of supporting and stabilizing the hollow tube 7, and preventing it from deflecting during the transmission process;

[0056] S3. When the hollow tube 7 is pushed to the entrance of the straightening mechanism 5, the forward and reverse motors 532 in the straightening mechanism 5 are started, and the driving gear 533 is meshed with the transmission teeth 535 on the transmission ring 534 to drive the transmission disc 531 to rotate. When the transmission disc 531 rotates, the straightening member 537 in the arc groove 536 thereon rotates accordingly. Since one end of the straightening mandrel 5373 is movably connected to the support rod 54, during this process, the straightening mandrel 5373 slides in the limiting sleeve 5371, so that the straightening roller 5375 on the straightening seat 5374 can fit closely to the surface of the hollow tube 7. The three straightening rollers 5375 cooperate with each other to perform multi-directional straightening treatment on the hollow tube 7, thereby eliminating the bending deformation of the hollow tube 7 and achieving the effect of precise straightening.

[0057] S4, the straightened hollow tube 7 continues to be pushed by the active transmission member 46 and the auxiliary transmission member 47 in the conveying mechanism 4 until it completely leaves the straightening mechanism 5;

[0058] S5. After the conveying mechanism 4 completes the transmission task of one hollow tube blank 7, the electric telescopic rod 44 contracts, driving the connecting rod 43 to move downward, so that the positioning turntable 41 is reset, preparing for the transmission of the next hollow tube blank 7.

[0059] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for hot straightening of hollow tube blanks for manufacturing aircraft landing gear, comprising a machine base (1), characterized in that: Two machine bases (1) are provided, and the two machine bases (1) are arranged front and back. A stand (2) is fixedly installed on the lower part of the outer surface of the two machine bases (1). The lower ends of the two stand (2) are fixedly connected to a bottom plate (3). The upper end of the bottom plate (3) is fixedly installed with a base (6). A straightening mechanism (5) is fixedly installed between the two machine bases (1). One end of the two machine bases (1) away from the straightening mechanism (5) is movably connected to a conveying mechanism (4), and the conveying mechanism (4) and the straightening mechanism (5) are both arranged coaxially with the machine base (1); The straightening mechanism (5) comprises a first fixing plate (51) and a second fixing plate (52), wherein the first fixing plate (51) and the second fixing plate (52) are respectively fixedly connected to the machine base (1) on both sides, and a three-way counter-straightening device (53) is rotatably connected between the first fixing plate (51) and the second fixing plate (52); The transmission mechanism (4) comprises a positioning turntable (41) and an electric telescopic rod (44); two positioning turntables (41) are provided and are rotatably connected to one side of two machine bases (1) away from the opposite ends; the outer surfaces of the two positioning turntables (41) are integrally formed with connecting ears (42); a connecting rod (43) is fixedly installed between the two connecting ears (42); the lower part of the electric telescopic rod (44) is movably connected to the base (6) via a rotating shaft; a connecting seat (45) is fixedly installed at the output end of the electric telescopic rod (44); and the connecting seat (45) is sleeved on the connecting rod (43) and movably connected to the connecting rod (43); Two active transmission components (46) and two auxiliary transmission components (47) are disposed at one end of the two positioning turntables (41) away from the machine base (1), and the two auxiliary transmission components (47) and the two active transmission components (46) are arranged perpendicularly to each other and do not contact each other; The two active transmission members (46) are arranged in parallel with each other up and down with respect to the central axis of the positioning turntable (41), and the two auxiliary transmission members (47) are arranged in parallel with each other left and right with respect to the central axis of the positioning turntable (41); The active transmission member (46) comprises a No. 1 fixed ear (461) and a No. 1 movable seat (463), the No. 1 fixed ear (461) being fixedly mounted on the positioning turntable (41), a driving motor (464) being fixedly mounted on one end of the No. 1 fixed ear (461), an active conveying roller (462) being fixedly mounted on the output end of the driving motor (464), and the active conveying roller (462) being movably connected to the No. 1 fixed ear (461) via a bearing, and the No. 1 movable seat (463) being movably mounted on the machine base (1) and sleeved on the active conveying roller (462) and slidably connected to the active conveying roller (462); The auxiliary transmission member (47) comprises a second fixed ear (471) and a second movable seat (473), wherein the second fixed ear (471) is fixedly mounted on the positioning turntable (41), a driven conveying roller (472) is rotatably connected inside the second fixed ear (471), and the second movable seat (473) is movably mounted on the machine base (1) and is sleeved on the driven conveying roller (472) and is slidably connected to the driven conveying roller (472); The three-way counter-drive straightening device (53) comprises a transmission disc (531) and a forward and reverse motor (532); the transmission disc (531) is rotatably connected between a first fixing plate (51) and a second fixing plate (52); a transmission ring (534) is fixedly sleeved on the outer surface of the transmission disc (531); a transmission tooth (535) is integrally formed on the outer surface of the transmission ring (534); the forward and reverse motor (532) is fixedly mounted on the mounting plate (511); a driving gear (533) is fixedly mounted on the output end of the forward and reverse motor (532) via a rotating shaft; the driving gear (533) and the transmission tooth (535) correspond in position and mesh with each other.

2. The hot straightening device for hollow tube blanks for manufacturing aircraft landing gear according to claim 1, characterized in that: A mounting plate (511) is fixedly welded to the upper portion of the outer surface of the first fixing plate (51), and avoidance grooves (512) are provided on both the front and rear sides of the outer surfaces of the first fixing plate (51) and the second fixing plate (52), and three support rods (54) are fixedly mounted on an end surface of one side of the first fixing plate (51) close to the three-way opposite-chasing straightening device (53), and the three support rods (54) are distributed in a ring array.

3. The hot straightening device for hollow tube blanks for manufacturing aircraft landing gear according to claim 1, characterized in that: The outer surface of the transmission disk (531) is provided with three arc-shaped grooves (536) which are in communication with the interior of the transmission disk (531), and the three arc-shaped grooves (536) are arranged in a ring array with the middle of the transmission disk (531) as the center, and straightening members (537) are movably installed in the three arc-shaped grooves (536), and the three straightening members (537) are movably connected to the three support rods (54) respectively.

4. The hot straightening device for hollow tube blanks for manufacturing aircraft landing gear according to claim 3, characterized in that: The straightening member (537) comprises a limiting sliding sleeve (5371), and movable rods (5372) are fixedly installed at both the front and rear ends of the limiting sliding sleeve (5371), and the limiting sliding sleeve (5371) is movably connected in the arc groove (536) through the movable rod (5372), and a straightening push rod (5373) is slidably connected in the limiting sliding sleeve (5371), and one end of the straightening push rod (5373) is movably connected to the support rod (54), and a straightening seat (5374) is fixedly installed at one end of the straightening push rod (5373) away from the support rod (54), and a straightening roller (5375) is rotatably connected in the straightening seat (5374).

Images