Telescopic positioner for installing adapter ring of air inlet channel of engine

Abstract

The invention relates to the technical field of aero-engine maintenance, in particular to a telescopic positioner for mounting an adapter ring of an air inlet passage of an engine, which is characterized in that a telescopic arm and a rack shaft are respectively arranged on four sides of a transmission module, the rack shaft is positioned on one side of the telescopic arm, and the rack shaft penetrates through the inside of the transmission module and extends out from the other side of the transmission module; shaft fixing sliding blocks are installed at the ends, close to the transmission module, of the telescopic arms and the rack shafts, the left shaft fixing sliding blocks and the right shaft fixing sliding blocks which are adjacent in the left-right direction are installed in an up-down upside-down mode, and movable positioning modules are arranged at the ends, away from the transmission module, of the telescopic arms and the rack shafts. When the engine is installed, the adapter ring is in contact with the positioning block of the positioner, so that the function of correcting deflection of the adapter ring is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of aviation engine maintenance, in particular to a telescopic positioner for installing an engine air inlet adapter ring. Background Art

[0002] When the aircraft engine is installed, the front end is connected to the air inlet by an adapter ring. The adapter ring and the engine are usually connected by only one screw, so they are basically in a free state.

[0003] Because of the above reasons, the friction between the engine adapter ring and the inner wall of the air intake duct will cause a yaw problem. In the prior art, a rivet gun is usually used manually to impact it back into place. However, the impact force of the rivet gun is large and the force cannot be well controlled. This is not only time-consuming and laborious, but may also cause damage to the adapter ring itself and the inner wall of the air intake duct, posing an installation risk.

[0004] Based on the above reasons, the present invention designs a telescopic positioner for installing an engine intake duct adapter ring, adds several sets of detachable positioning devices on the inner wall of the intake duct to firmly support it, and when installing the engine, the adapter ring is brought into contact with the positioning block of the positioner to achieve the function of correcting the skew adapter ring. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a telescopic positioner for installing an engine intake duct adapter ring, adding several groups of detachable positioning devices to the inner wall of the intake duct to firmly support it, and when installing the engine, the adapter ring is brought into contact with the positioning block of the positioner to achieve the function of correcting the sway of the adapter ring.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a telescopic positioner for installing an engine intake duct adapter ring, wherein telescopic arms and rack shafts are respectively arranged on the four sides of a transmission module, the rack shaft is located on one side of the telescopic arm, the rack shaft passes through the interior of the transmission module and extends from the other side, an axis fixing slider is installed at one end of the telescopic arm and the rack shaft close to the transmission module, and the left and right adjacent axis fixing sliders are respectively installed upside down, and an active positioning module is arranged at one end of the telescopic arm and the rack shaft away from the transmission module.

[0007] The outer side of the movable positioning module is a positioning seat, the top of the positioning seat is installed with an engine adjustment block through a connecting shaft, the inner side of the positioning seat is provided with an adjustment seat, the adjustment seat is connected to the telescopic arm seat with an opening on the inner side through a rotating shaft, and a spring and a telescopic arm mounting bushing are provided in the opening of the telescopic arm seat.

[0008] A threaded hole is provided on the shaft fixing slider, a rack shaft hole is provided on the other side of the threaded hole, a pair of telescopic arm holes and avoidance holes are provided on the left and right sides of the shaft fixing slider respectively, a lightening groove is provided in the middle of the shaft fixing slider, a stop screw hole is provided on the top surface and the side inclined surface of the telescopic arm hole, and the telescopic arm hole and the telescopic arm are fixed by the stop screw in the stop screw hole The rack shafts in the transmission module pass through the respective rack shaft holes and are connected to the corresponding threaded holes directly opposite thereto.

[0009] The diameter of the avoidance hole is 4 to 6 mm larger than the diameter of the telescopic arm.

[0010] The helical gear shaft in the transmission module is connected to a hand crank provided on one side of the transmission module through a square hole; The helical gear shaft is interference fit with the helical gear one, the helical gear one is meshed with the helical gear two, the helical gear two is interference installed with the worm shaft, the worm shaft is interference installed with the worm rod, the turbine meshed with the worm rod is installed on the gear fixing shaft, two interference fitted gears are arranged on the gear fixing shaft, both sides of the gear are meshed with the rack shaft on the shaft fixing slider, a bearing seat one is arranged on the periphery of the helical gear one, a bearing seat two is arranged on the periphery of the turbine, and a pair of supporting bushings are respectively arranged at both ends of the rack on the rack shaft.

[0011] A handle is arranged on the transmission module and between adjacent telescopic arms.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention installs two sets of gear rack structures on the same shaft to realize four sets of telescopic arms and can be extended and retracted at the same time. The transmission system is added with a worm gear transmission method to increase the transmission ratio and realize self-locking, which is more convenient and labor-saving to use. The use of spiral gears to change the operation direction is more ergonomic. At the same time, since the hand crank is connected to the side of the transmission module through a square hole, it conforms to the human body's operating habits. The rotation direction of the crank is directly the same as the extension direction of the telescopic rod, which makes it easier to sense the support of the air intake duct and control the strength. The detachable manner of the hand crank is also convenient for storage. When you want to use it, you only need to directly connect it to the upper hole.

[0013] The working diameter of the present invention is more than one meter, and a certain support force is required for the air inlet. Since manual installation and removal are required, the telescopic arm adopts 10MM hard shaft material so as not to increase the extra weight while ensuring rigidity. Considering that the diameter and roundness of the air inlet of each aircraft may be different, the positioning block adopts an elastic design. When the positioner is supported on the inner wall of the air inlet, the positioning block will automatically fit the inner wall in contact, and fit perfectly with the air inlet. At the same time, in order to meet the needs of different models, the designed positioning seat and engine adjustment block can be easily removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the overall assembly diagram of the present invention.

[0015] Figure 2 It is an exploded view of the movable positioning module of the present invention.

[0016] Figure 3 It is a schematic diagram of the shaft fixing sliding block of the present invention.

[0017] Figure 4 It is an exploded view of the transmission module of the present invention.

[0018] Figure 5 Assemble the transmission module of the present invention Figure 1 .

[0019] Figure 6 Assemble the transmission module of the present invention Figure 2 .

[0020] Description of reference numerals: 1 is a movable positioning module, 2 is a shaft fixing slider, 3 is a transmission module, 4 is a hand crank, 5 is a rack shaft, 6 is a telescopic arm, 7 is a handle, 8 is an engine adjustment block, 9 is a positioning seat, 10 is an adjustment seat, 11 is a spring, 12 is a connecting shaft, 13 is a rotating shaft, 14 is a telescopic arm mounting bushing, 15 is a telescopic arm seat, 16 is a threaded hole, 17 is a rack shaft hole, 18 is a telescopic arm hole, 19 is an avoidance hole, 20 is a lightening groove, 21 is a stop screw hole, 22 is a helical gear shaft, 23 is a bearing seat one, 24 is a helical gear one, 25 is a worm shaft, 26 is a helical gear two, 27 is a support bushing, 29 is a worm, 30 is a gear, 31 is a turbine, 32 is a bearing seat two, and 33 is a gear fixing shaft. DETAILED DESCRIPTION

[0021] The present invention will now be further described with reference to the accompanying drawings.

[0022] See also Figures 1 to 6 The present invention provides a telescopic positioner for installing an engine intake duct adapter ring, wherein telescopic arms 6 and rack shafts 5 are respectively arranged on the four sides of a transmission module 3, wherein the rack shaft 5 is located on one side of the telescopic arm 6, and the rack shaft 5 passes through the interior of the transmission module 3 and extends from the other side, and shaft fixing sliders 2 are installed at one end of the telescopic arm 6 and the rack shaft 5 close to the transmission module 3, and the shaft fixing sliders 2 adjacent to the left and right are respectively installed upside down, and an active positioning module 1 is arranged at one end of the telescopic arm 6 and the rack shaft 5 away from the transmission module 3.

[0023] The outer side of the movable positioning module 1 is a positioning seat 9, and the engine adjustment block 8 is installed on the top of the positioning seat 9 through a connecting shaft 12. An adjustment seat 10 is arranged on the inner side of the positioning seat 9. The adjustment seat 10 is connected to a telescopic arm seat 15 with an opening on the inner side through a rotating shaft 13. A spring 11 and a telescopic arm mounting bushing 14 are arranged in the opening of the telescopic arm seat 15.

[0024] A threaded hole 16 is provided on the shaft fixing slider 2, a rack shaft hole 17 is provided on the other side of the threaded hole 16, a pair of telescopic arm holes 18 and an avoidance hole 19 are provided on the left and right sides of the shaft fixing slider 2, a lightening groove 20 is provided in the middle of the shaft fixing slider 2, a stop screw hole 21 is provided on the top surface and the side inclined surface of the telescopic arm hole 18, and the telescopic arm hole 18 is fixed to the telescopic arm 6 by a stop screw in the stop screw hole 21; The rack shafts 5 in the transmission module 3 pass through their respective rack shaft holes 17 and are connected to the corresponding threaded holes 16 directly opposite to them.

[0025] The diameter of the avoidance hole 19 is 4 to 6 mm larger than the diameter of the telescopic arm 6 .

[0026] The helical gear shaft 22 in the transmission module 3 is connected to the hand crank 4 provided on one side of the transmission module 3 through a square hole; The helical gear shaft 22 is interference fit with the helical gear 1 24, the helical gear 1 24 is meshed with the helical gear 2 26, the helical gear 2 26 is interference installed with the worm shaft 25, the worm shaft 25 is interference installed with the worm rod 29, the turbine 31 meshed with the worm rod 29 is installed on the gear fixing shaft 33, and two interference fitted gears 30 are arranged on the gear fixing shaft 33, and both sides of the gear 30 are meshed with the rack shaft 5 on the shaft fixing slider 2, the periphery of the helical gear 1 24 is provided with a bearing seat 1 23, the periphery of the turbine 31 is provided with a bearing seat 2 32, and a pair of support bushings 27 are respectively arranged at both ends of the rack on the rack shaft 5.

[0027] A handle 7 is provided on the transmission module 3 and between adjacent telescopic arms 6 .

[0028] The above are only preferred embodiments of the present invention, which are only used to help understand the method and core ideas of the present application. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

[0029] The present invention solves the problem in the prior art as a whole that when the adapter ring is connected to the engine by only one screw and then deflection occurs, a rivet gun is usually used to impact the adapter ring to return to its original position, resulting in potential damage and safety hazards to the adapter ring itself and the inner wall of the air inlet duct. By adding several sets of detachable positioning devices to the inner wall of the air inlet duct, the adapter ring is firmly supported. When the engine is installed, the adapter ring is brought into contact with the positioning block of the positioner to correct the deflection of the adapter ring. The device has an ingenious structure, is easy to use, saves time and effort, and is also suitable for other similar usage scenarios.

Claims

1. A telescopic positioner for installing an engine intake adapter ring, characterized in that: A telescopic arm (6) and a rack shaft (5) are respectively arranged on four sides of the transmission module (3); the rack shaft (5) is located on one side of the telescopic arm (6); the rack shaft (5) passes through the interior of the transmission module (3) and extends out from the other side; an axis fixing slider (2) is installed at one end of the telescopic arm (6) and the rack shaft (5) close to the transmission module (3); the axis fixing sliders (2) adjacent to each other on the left and right are respectively installed upside down; and an active positioning module (1) is installed at one end of the telescopic arm (6) and the rack shaft (5) away from the transmission module (3).

2. The telescopic positioner for installing the engine intake duct adapter ring according to claim 1, characterized in that: The outer side of the movable positioning module (1) is a positioning seat (9), the top of the positioning seat (9) is mounted with an engine adjustment block (8) via a connecting shaft (12), the inner side of the positioning seat (9) is provided with an adjustment seat (10), the adjustment seat (10) is connected to a telescopic arm seat (15) with an opening on the inner side via a rotating shaft (13), and a spring (11) and a telescopic arm mounting bushing (14) are arranged in the opening of the telescopic arm seat (15).

3. The telescopic positioner for installing the engine intake duct adapter ring according to claim 1, characterized in that: The shaft fixing slider (2) is provided with a threaded hole (16), the other side of the threaded hole (16) is provided with a rack shaft hole (17), the left and right sides of the shaft fixing slider (2) are respectively provided with a pair of telescopic arm holes (18) and an avoidance hole (19), a lightening groove (20) is provided in the middle of the shaft fixing slider (2), the top surface and the side inclined surface of the telescopic arm hole (18) are provided with a stop screw hole (21), and the telescopic arm hole (18) and the telescopic arm (6) are fixed by a stop screw in the stop screw hole (21); The rack shaft (5) in the transmission module (3) passes through the respective rack shaft hole (17) and is connected to the corresponding threaded hole (16) directly opposite to it.

4. The telescopic positioner for installing the engine intake duct adapter ring according to claim 3, characterized in that: The diameter of the avoidance hole (19) is 4 to 6 mm larger than the diameter of the telescopic arm (6).

5. The telescopic positioner for installing the engine intake duct adapter ring according to claim 1, characterized in that: The helical gear shaft (22) in the transmission module (3) is connected to a hand crank (4) provided on one side of the transmission module (3) via a square hole; The helical gear shaft (22) is interference-fitted with the helical gear one (24), the helical gear one (24) is meshed with the helical gear two (26), the helical gear two (26) is interference-fitted with the worm shaft (25), the worm shaft (25) is interference-fitted with the worm rod (29), the turbine (31) meshed with the worm rod (29) is mounted on the gear fixing shaft (33), the gear fixing shaft (33) is provided with two interference-fitted gears (30), both sides of the gears (30) are meshed with the rack shaft (5) on the shaft fixing slider (2), the outer periphery of the helical gear one (24) is provided with a bearing seat one (23), the outer periphery of the turbine (31) is provided with a bearing seat two (32), and a pair of supporting bushings (27) are respectively provided at both ends of the rack on the rack shaft (5).

6. The telescopic positioner for installing the engine intake duct adapter ring according to claim 1, characterized in that: A handle (7) is provided on the transmission module (3) and located between adjacent telescopic arms (6).

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