An umbrella-shaped protective device used in an engine air intake

Abstract

An umbrella-shaped protective device for use in an engine air intake duct includes an umbrella frame structure, an umbrella cloth installed on the umbrella frame structure, and an elastic compensation ring installed on the umbrella frame structure and located on the periphery of the umbrella cloth; the umbrella frame structure includes a sleeve telescopic rod, a support seat, a combined slide seat, a plurality of lateral support rods, a plurality of oblique support rods, and a release pin, the combined slide seat is slidably sleeved on the sleeve telescopic rod, and the combined slide seat has a built-in snap mechanism, the release pin passes through the support seat and extends into the sleeve telescopic rod and cooperates with the snap mechanism, so that the umbrella frame structure can be opened or closed. When the umbrella-shaped protective device for use in an engine air intake duct of this case is used, the staff controls the opening or closing of the umbrella frame structure from the top of the umbrella frame structure, without the need to operate from inside the engine, which is more conducive to the protection of the internal structure of the engine, and the umbrella frame structure after opening is more closely attached to the inner wall of the engine air intake duct, which can effectively prevent foreign matter from entering the engine.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft ground maintenance, and in particular to an umbrella-shaped protective device used in an engine air intake. Background Art

[0002] The engine is an essential power component of an aircraft and one of the main components of an aircraft. The quality of its performance is directly related to the safety of the aircraft. During the regular inspection and maintenance of the engine, it is often necessary to stop on the ground. In order to prevent foreign objects from entering the engine, it is often necessary to protect the engine air intake. Most of the existing aircraft engine air intake protection covers are external wind and sand proof cloth covers. When in use, the cloth cover is put on the outside of the engine air intake and tied and fixed by the hanging rope (or other parts) on the cloth cover. Since the existing wind and sand proof cloth cover is only equipped for a single model, and the sizes of the engine air intakes of different models are different, the wind and sand proof cloth cover cannot be adapted to most models. Summary of the invention

[0003] The object of the present invention is to provide an umbrella-shaped protective device for use in an engine intake duct to overcome the shortcomings and deficiencies in the above-mentioned background technology.

[0004] In order to achieve the above objectives, this case is implemented through the following technical solutions:

[0005] An umbrella-shaped protective device used in an engine air intake duct comprises an umbrella frame structure, an umbrella cloth installed on the umbrella frame structure, and an elastic compensation ring installed on the umbrella frame structure and located at the periphery of the umbrella cloth; the umbrella frame structure comprises a sleeve telescopic rod, a support seat, a combined slide seat, a plurality of transverse support rods, a plurality of oblique support rods and a release pin, the combined slide seat is slidably sleeved on the sleeve telescopic rod, and a buckling mechanism is built into the combined slide seat, the release pin passes through the support seat and extends into the sleeve telescopic rod and cooperates with the buckling mechanism, so that the umbrella frame structure can be opened or closed.

[0006] Furthermore, the support seat is fixedly arranged on the top of the telescopic sleeve rod, and the support seat is bowl-shaped. A plurality of first hinge seats are evenly arranged circumferentially on the outer wall of the support seat for hingedly connecting the transverse support rod. A pin hole connected to the telescopic sleeve rod is arranged at the center of the bottom of the support seat, and the loose pin is installed in the pin hole.

[0007] Furthermore, the combined slide includes a first slide and a second slide connected up and down, and the first slide and the second slide are connected as a whole by the first buckle arranged on the side wall of the first slide cooperating with the first bayonet arranged on the side wall of the second slide.

[0008] Furthermore, a plurality of second hinge seats are evenly arranged circumferentially on the outer wall of the first slide seat for hingedly connecting the oblique support rod; and the second slide seat has the buckling mechanism built therein.

[0009] Furthermore, the transverse support rods are radially distributed with the telescopic sleeve rod as the center, and the inner end of each transverse support rod is hinged to the support seat through a first hinge seat; a third hinge seat is provided in the middle of each transverse support rod for connecting the corresponding diagonal support rod.

[0010] Furthermore, a spring seat is provided at the outer end of each transverse support rod, and a first return spring is provided in the spring seat, so that the transverse support rod can be radially retracted.

[0011] Furthermore, the oblique support rods are radially distributed with the telescopic sleeve rod as the center, and correspond one-to-one with the transverse support rods; the inner end of each oblique support rod is hinged to the first sliding seat through a second hinge seat, and the outer end of each oblique support rod is hinged to the transverse support rod through a third hinge seat, so that the transverse support rods, the oblique support rods and the telescopic sleeve rod form a triangular support structure.

[0012] Furthermore, the locking mechanism includes an arcuate slider, a transverse slide rail and a spring pin; the arcuate slider is embedded and installed in a release slot provided on the side wall of the second slide seat by means of clearance fit, and the inner side surface of the arcuate slider is T-shaped and fixedly connected to the transverse slide rail, and the transverse slide rail is annular and can allow the release pin to pass through, and the transverse slide rail is slidably installed in a slide groove on the inner wall of the telescopic sleeve rod; one end of the spring pin is elastically fixed to the inner wall of the telescopic sleeve rod by a spring, and the other end laterally passes through the transverse slide rail and extends to the up and down movement trajectory of the release pin; the spring pin has an arcuate pin head.

[0013] Furthermore, the telescopic sleeve rod is the center of the umbrella frame structure, and a conical base is provided at the bottom end of the telescopic sleeve rod.

[0014] Furthermore, the release pin is installed in the central pin hole of the support seat, inserted into the sleeve telescopic rod and cooperates with the buckling mechanism.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) When the umbrella-shaped protective device used in the engine air intake of the present case is used, the staff only needs to stand outside the engine air intake to open or fold the umbrella frame structure, that is, the staff can control the opening or folding of the umbrella frame structure from the top of the umbrella frame structure, which is easy to operate and does not require operation from inside the engine, which is more conducive to the protection of the internal structure of the engine.

[0017] 2) By arranging a spring seat on the transverse support rod, the radial distance of the umbrella frame structure after being expanded can be adjusted, so that the umbrella frame structure after being expanded can better fit the inner wall of the engine air intake duct, and can be adapted to engines of different models with good adaptability; and an elastic compensation ring is also arranged on the periphery of the umbrella cloth, so that the umbrella frame structure can further fit the inner wall of the engine air intake duct, which can effectively prevent foreign matter from entering the engine and protect the engine more effectively.

[0018] 3) An observation window connected by a zipper is provided on the parachute cloth, which is convenient for observing whether the conical base of the telescopic rod of the sleeve is against the engine head in the air intake duct, and convenient for confirming whether the installation is in place, which is practical.

[0019] 4) Each section of the sleeve on the sleeve telescopic rod is fastened by ball sliding, so that the overall length of the sleeve telescopic rod can be extended and retracted, and installation and fixing are more convenient.

[0020] In order to more clearly understand the present invention, preferred embodiments of the present invention will be described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention from a top view;

[0022] Figure 2 It is a structural schematic diagram of the umbrella frame structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the connection between the transverse support rod and the oblique support rod in the present invention;

[0024] Figure 4 It is a structural schematic diagram of the spring seat of the present invention;

[0025] Figure 5 It is a schematic diagram of the assembly of the support seat and the combined slide seat of the present invention;

[0026] Figure 6 It is a schematic diagram of the assembly of the combined slide of the present invention;

[0027] Figure 7 is a schematic cross-sectional structural diagram of the buckling mechanism of the present invention;

[0028] Figure 8 It is a disassembly diagram of the buckling mechanism of the present invention. DETAILED DESCRIPTION

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0030] In addition, if there are terms such as "first" and "second", they are only used for descriptive purposes, mainly to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components, and cannot be understood as indicating or implying relative importance.

[0031] Please also see Figures 1 to 8 , an umbrella-shaped protective device for use in an engine air intake duct, comprising an umbrella frame structure, an umbrella cloth 90 mounted on the umbrella frame structure, and an elastic compensation ring 91 mounted on the umbrella frame structure and located at the periphery of the umbrella cloth 90, wherein the inner edge of the elastic compensation ring 91 is in contact with the outer edge of the umbrella cloth 90. Since the umbrella-shaped protective device for use in an engine air intake duct of the present case is used in the engine air intake, when the umbrella frame structure is opened in the air intake duct, the umbrella cloth 90 is a regular polygon, and the elastic compensation ring 91 located at the periphery of the umbrella frame structure is used as compensation, so that the umbrella frame structure is more closely attached to the inner wall of the engine air intake duct, and foreign objects can be more effectively prevented from entering the engine from the air intake duct.

[0032] The umbrella frame structure includes a sleeve telescopic rod 11, a support seat 12, a combined slide seat 13, a plurality of transverse support rods 14, a plurality of oblique support rods 15 and a release pin 16. The combined slide seat 13 is slidably mounted on the sleeve telescopic rod 11, and the combined slide seat 13 has a built-in snap-fit ​​mechanism. The release pin 16 passes through the support seat 12 and extends into the sleeve telescopic rod 11 and cooperates with the snap-fit ​​mechanism, so that the combined slide seat 13 can slide on the sleeve telescopic rod 11. When the combined slide seat 13 slides, it drives the transverse support rod 14 and the oblique support rod 15, thereby allowing the umbrella frame structure to be opened or closed.

[0033] The telescopic sleeve rod 11 is the center of the umbrella frame structure. A conical base 111 is disposed at the bottom end of the telescopic sleeve rod 11. When in use, the conical base 111 abuts against the engine head in the center of the air inlet.

[0034] The support seat 12 is fixedly arranged on the top of the telescopic sleeve rod 11. The support seat 12 has a bowl-shaped appearance. A plurality of first hinge seats 121 are evenly arranged circumferentially on the outer wall of the support seat 12 for hingedly connecting the transverse support rod 14. A pin hole connected to the telescopic sleeve rod 11 is arranged at the bottom center of the support seat 12, and the loosening pin 16 is installed in the pin hole.

[0035] The combined slide 13 includes a first slide 131 and a second slide 132 connected up and down. The first buckle 133 arranged on the side wall of the first slide 131 cooperates with the first bayonet arranged on the side wall of the second slide 132, so that the first slide 131 and the second slide 132 are connected as a whole, thereby making the first slide 131 and the second slide 132 slide synchronously on the telescopic sleeve rod 11.

[0036] Furthermore, a plurality of second hinge seats 134 are evenly arranged circumferentially on the outer wall of the first slide seat 131 for hingedly connecting the oblique support rod 15 ; and the second slide seat 132 has the buckling mechanism built therein.

[0037] The transverse support rods 14 are radially distributed with the telescopic sleeve rod 11 as the center, and the inner end of each transverse support rod 14 is hinged to the support seat 12 through a first hinge seat 121; a third hinge seat is provided in the middle of each transverse support rod 14 for connecting the corresponding diagonal support rod.

[0038] Furthermore, a spring seat 141 is provided at the outer end of each transverse support rod 14, and a first return spring is provided in the spring seat 141, so that the transverse support rod 14 can be radially extended and retracted, thereby making the radial distance of the umbrella frame structure after opening adjustable, so that the umbrella-shaped protection device used in the air intake duct of the engine can better fit the inner wall of the air intake duct.

[0039] The oblique support rods 15 are radially distributed with the telescopic sleeve rod 11 as the center and correspond to the transverse support rods 14 one by one; the inner end of each oblique support rod 15 is hinged to the first slide seat 131 through a second hinge seat 134, and the outer end of each oblique support rod 15 is hinged to the transverse support rod 14 through a third hinge seat, so that the transverse support rod 14, the oblique support rod 15 and the telescopic sleeve rod 11 form a triangular support structure, thereby supporting the umbrella cloth 90 in the shape of a regular polygon.

[0040] The release pin 16 is installed in the central pin hole of the support seat 12, inserted into the sleeve telescopic rod 11 and matched with the buckling mechanism.

[0041] The locking mechanism includes an arc-shaped slider 21, a transverse slide rail 22 and a spring pin 23; the arc-shaped slider 21 is embedded and installed in a release slot provided on the side wall of the second slide seat 132 by means of clearance fit, and the inner side surface of the arc-shaped slider 21 is fixedly connected to the transverse slide rail 22 in a T-shape, and the transverse slide rail 22 is annular and can be passed through by the release pin 16, and the transverse slide rail 22 is slidably installed in a slide groove 24 on the inner wall of the telescopic sleeve rod 11; one end of the spring pin 23 is elastically fixed to the inner wall of the telescopic sleeve rod 11 by a spring, and the other end transversely passes through the transverse slide rail 22 and extends to the up and down movement trajectory of the release pin 16, and the spring pin 23 has an arc-shaped pin head, so that when the release pin 16 moves downward and hits the pin head of the spring pin 23, the spring pin 23 can move laterally.

[0042] The working principle of the buckling mechanism is:

[0043] When the umbrella frame structure is to be folded, the release pin 16 is manually pressed from the upper end of the umbrella frame structure, and the release pin 16 moves downward and hits the pin head of the spring pin 23, so that the spring pin 23 drives the transverse sliding rail 22 to move transversely in the sliding groove 24, and the transverse sliding rail 22 drives the arc surface sliding buckle 21 to move transversely, so that the arc surface sliding buckle 21 is sunk into the sleeve telescopic rod 11, at this time, the arc surface sliding buckle 21 is disengaged from the release bayonet on the side wall of the second slide seat 132, so that the combined slide seat 13 can slide on the sleeve telescopic rod 11, thereby driving the umbrella frame structure to be folded;

[0044] When the umbrella frame structure is to be opened, the release pin 16 is first manually lifted from the upper end of the umbrella frame structure to move the release pin 16 upward and disengage from the pin head of the spring pin 23, and then the combined slide 13 is manually pushed upward on the sleeve telescopic rod 11. When it moves upward to the point where the release bayonet is aligned with the arcuate slider 21, the spring pin 23 is reset, driving the arcuate slider 21 to rebound into the release bayonet, thereby preventing the combined slide 13 from continuing to slide on the sleeve telescopic rod 11. At this time, the combined slide 13 lifts up the umbrella frame structure to open the umbrella frame structure, thereby blocking the air intake duct of the engine.

[0045] Furthermore, in order to facilitate observation of the alignment of the device in the engine air intake during use, an observation window 92 is provided on the umbrella cloth 90, and the observation window 92 is connected to the umbrella cloth 90 via a three-sided zipper.

[0046] Furthermore, in order to allow the combined slide 13 to slide down automatically when the buckling mechanism is disengaged, a second return spring is provided on the telescopic sleeve rod 11 between the support seat 12 and the combined slide 13 .

[0047] Furthermore, in order to prevent the staff from accidentally touching the release pin 16 and causing the umbrella frame structure to automatically fold up, a top cover (not shown) is also provided at the top bowl position of the support seat 12, and the top cover is opened only when the release pin 16 needs to be pressed or lifted.

[0048] Preferably, in the present embodiment, the elastic compensation ring 91 is an elastic rubber anti-collision strip with a U-shaped structure, so that it can be integrally squeezed and contacted with the inner wall of the air inlet duct to achieve a good sealing effect; the umbrella cloth 90 is a rainproof cloth, which can effectively prevent rainwater from entering the engine from the air inlet duct; the umbrella cloth 90 is a rainproof cloth, which can effectively prevent rainwater from entering the engine from the air inlet duct; each section of the sleeve on the telescopic sleeve rod 11 is fastened by ball sliding, so that the overall length of the telescopic sleeve rod 11 is telescopic.

[0049] When the umbrella-shaped protective device for the engine air intake of the present invention is used, the staff first opens the umbrella frame structure, and extends the sleeve telescopic rod 11 into the engine air intake. By opening the observation window 92 on the umbrella cloth 90, it can be observed whether the conical base 111 of the sleeve telescopic rod 11 is against the engine head in the air intake. Since the spring seat 141 is provided on the transverse support rod 14, the radial distance of the elastic compensation ring 91 on the outer edge of the umbrella cloth 90 is adjustable. By adjusting the elastic compensation ring 91, the outer periphery of the umbrella frame structure is more closely attached to the inner wall of the engine air intake. After installation, the observation window 92 is closed. When the device is to be removed from the engine air intake, it is only necessary to open the top cover from the outside of the engine air intake and press the release pin 16, and the umbrella frame structure can be folded.

[0050] Compared with the prior art, the beneficial effects of the present invention are as follows: when the umbrella-shaped protective device used in the engine air intake of the present case is used, the staff only needs to stand outside the engine air intake to open or close the umbrella frame structure, that is, the staff can control the opening or closing of the umbrella frame structure from the top of the umbrella frame structure, which is easy to operate and does not need to be operated from the inside of the engine, which is more conducive to the protection of the internal structure of the engine. By setting a spring seat 141 on the transverse support rod 14, the radial distance of the umbrella frame structure after opening is adjustable, so that the umbrella frame structure after opening is more closely fitted to the inner wall of the engine air intake, and can be adapted to engines of different models, with good adaptability; and an elastic compensation ring 91 is also set on the periphery of the umbrella cloth 90, which further makes the umbrella frame structure more closely fit the inner wall of the engine air intake, which can effectively prevent foreign matter from entering the engine and more effectively protect the engine.

[0051] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An umbrella-shaped protective device for use in an engine air intake duct, characterized in that: It includes an umbrella frame structure, an umbrella cloth installed on the umbrella frame structure, and an elastic compensation ring installed on the umbrella frame structure and located on the periphery of the umbrella cloth; the umbrella frame structure includes a sleeve telescopic rod, a support seat, a combined slide seat, a plurality of transverse support rods, a plurality of oblique support rods and a release pin, the combined slide seat is slidably sleeved on the sleeve telescopic rod, and a buckling mechanism is built into the combined slide seat, the release pin passes through the support seat and extends into the sleeve telescopic rod, and cooperates with the buckling mechanism, so that the umbrella frame structure can be opened or closed.

2. The umbrella-shaped protective device for use in an engine intake duct according to claim 1, characterized in that: The support seat is fixedly arranged on the top of the telescopic sleeve rod. The support seat has a bowl-shaped appearance. A plurality of first hinge seats are evenly arranged circumferentially on the outer wall of the support seat for hingedly connecting the transverse support rod. A pin hole connected to the telescopic sleeve rod is arranged at the center of the bottom of the support seat, and the loosening pin is installed in the pin hole.

3. The umbrella-shaped protective device for use in an engine intake duct according to claim 2, characterized in that: The combined slide seat comprises a first slide seat and a second slide seat connected up and down, and the first slide seat and the second slide seat are connected as a whole by a first buckle arranged on the side wall of the first slide seat and a first bayonet arranged on the side wall of the second slide seat.

4. The umbrella-shaped protective device for use in an engine intake duct according to claim 3, characterized in that: A plurality of second hinge seats are evenly arranged on the outer wall of the first slide seat in a circumferential direction for hingedly connecting the oblique support rod; the second slide seat is internally provided with the buckling mechanism.

5. The umbrella-shaped protective device for use in an engine air intake duct according to claim 4, characterized in that: The transverse support rods are radially distributed with the sleeve telescopic rod as the center, and the inner end of each transverse support rod is hinged to the support seat through a first hinge seat; a third hinge seat is provided in the middle of each transverse support rod for connecting the corresponding diagonal support rod.

6. The umbrella-shaped protective device for use in an engine air intake duct according to claim 5, characterized in that: A spring seat is arranged at the outer end of each transverse support rod, and a first return spring is arranged in the spring seat, so that the transverse support rod can be radially extended and retracted.

7. The umbrella-shaped protective device for use in an engine air intake duct according to claim 6, characterized in that: The oblique support rods are radially distributed with the telescopic sleeve rod as the center, and correspond one-to-one to the transverse support rods; the inner end of each oblique support rod is hinged to the first sliding seat through a second hinge seat, and the outer end of each oblique support rod is hinged to the transverse support rod through a third hinge seat, so that the transverse support rods, the oblique support rods and the telescopic sleeve rod form a triangular support structure.

8. The umbrella-shaped protective device for use in an engine air intake duct according to claim 7, characterized in that: The locking mechanism includes an arc-shaped slider, a transverse slide rail and a spring pin; the arc-shaped slider is embedded and installed in a release slot provided on the side wall of the second slide seat by means of clearance fit, and the inner side surface of the arc-shaped slider is fixedly connected to the transverse slide rail in a T shape, and the transverse slide rail is annular and can allow the release pin to pass through, and the transverse slide rail is slidably installed in a slide groove on the inner wall of the sleeve telescopic rod; one end of the spring pin is elastically fixed to the inner wall of the sleeve telescopic rod by a spring, and the other end transversely passes through the transverse slide rail and extends to the up and down movement trajectory of the release pin; the spring pin has an arc-shaped pin head.

9. The umbrella-shaped protective device for use in an engine air intake duct according to claim 8, characterized in that: The sleeve telescopic rod is the center of the umbrella frame structure, and a conical base is arranged at the bottom end of the sleeve telescopic rod.

10. The umbrella-shaped protective device for use in an engine air intake duct according to claim 9, characterized in that: The release pin is installed in the central pin hole of the support seat, inserted into the sleeve telescopic rod and matched with the buckling mechanism.

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