Grid cover plate fixing device

Abstract

The utility model provides a grating cover plate fixing device which comprises a mandrel, a mandrel containing body, an elastic component, a limiting plate, a limiting element and a limiting pin, the mandrel is arranged in the mandrel containing body and inserted into the elastic component, the limiting plate is arranged at the end of the mandrel containing body to define the inner surface of a center hole, and the limiting element is inserted into the limiting plate. The limiting element is connected with the limiting plate and the core shaft, the limiting pin penetrates through the core shaft containing body and abuts against the core shaft, contraction and extension of the core shaft are completed by pressing the clamping cap and rotating the clamping cap clockwise or anticlockwise, the whole operation process is simple and rapid, assistance of other tools is not needed, the operation process is greatly simplified, and the production efficiency is improved. And the operation time required for mounting and separating the grating cover plate each time is shortened, and the operation efficiency of the whole carrier landing grating is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of aviation equipment, and particularly relates to a grating cover plate fixing device. BACKGROUND

[0002] The existing grating cover plate fixing plug is composed of an upper top plate, a core shaft, a column pin, a column pin spring, a hollow core shaft and a lower threaded bottom plate, and the outer layer of the hollow core shaft is covered with wear-resistant rubber. The core shaft is installed in the installation hole of the upper top plate, a limiting block on the core shaft and the upper top plate can form a limiting relationship, the bottom thereof is connected with the lower threaded bottom plate, and the lower threaded bottom plate is fixed with the hollow core shaft through an internal hexagonal screw.

[0003] The contraction and extension of the core shaft are completed through the rotation of an internal hexagonal wrench of a corresponding interface, and there are 12 fixing plugs on each set of grating cover plates. The operation time required for the installation and separation of the grating cover plates each time is relatively long, and the overall operation efficiency of the equipment is relatively low; and an internal hexagonal wrench needs to be additionally carried each time, and the use process is relatively cumbersome.

[0004] Secondly, the movement and positioning of the core shaft are realized through threads. Due to the influence of the use environment of the arresting grating, the threads may be rusted, and then the threads may be stuck and fail, so that the grating cover plate cannot be installed and separated. SUMMARY

[0005] The grating cover plate fixing device provided by the embodiment of the present application is characterized in that the contraction and extension of the core shaft are realized through the pressing, clockwise rotation or counterclockwise rotation of the core shaft, and the whole operation process is simple and fast.

[0006] The buckle fixing device provided by the present application comprises a core shaft containing body, an elastic component, a limiting plate, a limiting element, a limiting column pin and a cap.

[0007] In some optional embodiments, the first end cover and the hollow cylinder are buckle-connected.

[0008] In some optional embodiments, the first end cover comprises a first cover plate and a protruding part, the cover plate is arranged at one end of the middle hole cylinder, and the protruding part is clamped to the inside of the middle hole cylinder.

[0009] In some optional embodiments, the outer surface of the protruding part is provided with a plurality of protrusions, the protrusions are uniformly arranged on the outer surface of the protruding part, the inner surface of the hollow cylinder is provided with a plurality of recesses recessed from the inner surface of the hollow cylinder towards the outer surface, and the protrusions and the recesses are arranged one by one.

[0010] In some optional embodiments, the second end cover is connected with the hollow cylinder through a screw.

[0011] In some optional embodiments, the elastic component is a conical spring, and the diameter of the conical spring becomes smaller and smaller in the direction from the first end cover to the second end cover.

[0012] In some optional embodiments, a plurality of limiting columnar pins are arranged, the hollow cylinder is provided with a plurality of limiting holes along the circumference of the hollow cylinder, and each limiting columnar pin extends to the inside of the hollow cylinder through each limiting hole.

[0013] In some optional embodiments, the limiting columnar pin comprises a pin body and a spring, the pin body is provided with a blocking ring, the pin body is inserted into the spring, and the spring is arranged in the region between the blocking ring and the inner surface of the hollow cylinder.

[0014] In some optional embodiments, a rubber sleeve is further arranged on the outer surface of the hollow cylinder.

[0015] In some optional embodiments, the limiting element is a limiting bolt.

[0016] The beneficial effects brought by the present application are as follows:

[0017] From the above scheme can be seen, the embodiment of the present application provides a kind of grid cover plate fixing device, grid cover plate fixing device includes: mandrel containing body, elastic component, limiting plate, limiting element and limit pin, mandrel is set to mandrel containing body includes first end cover, hollow cylinder and second end cover, first end cover and second end cover are respectively with the two ends of hollow cylinder axially opposite arrangement detachable connection, hollow cylinder inner surface is provided with limiting ring, mandrel extends to the center hole of second end cover by penetrating first end cover and hollow cylinder, elastic component is arranged in hollow cylinder, elastic component is located in the region between first end cover and limiting ring, limiting plate is arranged in the inner surface of second end cover that forms center hole, limiting element connects limiting plate and mandrel, limit pin is abutted with mandrel by penetrating hollow cylinder, the contraction and extension of mandrel are by pressing the cap, clockwise rotation or counterclockwise rotation cap, the whole operation process is simple, fast, and no other tool is assisted, greatly simplifies the operation process, shortens the operation time required for each installation and separation of grid cover plate, improves the operation efficiency of whole landing grid. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A cross-sectional structure schematic view of a grid cover plate fixing device provided by the embodiment of the present application in first state is provided.

[0019] Figure 2 A cross-sectional structure schematic view of a grid cover plate fixing device provided by the embodiment of the present application in second state is provided. Figure 1 A cross-sectional structure schematic view of a grid cover plate fixing device provided by the embodiment of the present application in second state is provided.

[0020] Figure 3 A cross-sectional structure schematic view of a grid cover plate fixing device provided by the embodiment of the present application in second state is provided. Figure 1 A cross-sectional structure schematic view of a grid cover plate fixing device provided by the embodiment of the present application in second state is provided.

[0021] Figure 4 A cross-sectional structure schematic view of a grid cover plate fixing device provided by the embodiment of the present application in second state is provided. Figure 1 A cross-sectional structure schematic view of a grid cover plate fixing device provided by the embodiment of the present application in second state is provided.

[0022] In the figure, 1-mandrel containing body;11-first end cover;111-first cover plate;112-protruding portion;12-hollow cylinder;121-recess;13-second end cover;2-elastic component;3-limiting plate;4-limiting element;5-limiting pin;51-pin body;52-spring;a-mandrel;6-cap;61-cap setting plate;62-protruding block;63-insert plate;7-rubber sleeve;81-grid protective sleeve;91-grid cover plate;92-grid panel. DETAILED DESCRIPTION

[0023] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0024] The existing grid cover fixing plug is composed of an upper top plate, a mandrel, a column pin, a column pin spring, a hollow mandrel and a lower threaded bottom plate, and the outer layer of the hollow mandrel is covered with wear-resistant rubber. The mandrel is installed in the installation hole of the upper top plate, the limiting block on the mandrel can form a limiting relationship with the upper top plate, the bottom thread is connected with the lower threaded bottom plate, and the lower threaded bottom plate is fixed with the hollow mandrel through an internal hexagonal screw. During operation, the mandrel is moved up and down between the narrow and wide positions, thereby the column pin is retracted and extended, the locking and loosening of the grid cover fixing plug are realized, and the fixing and separation of the grid cover are completed.

[0025] The retraction and extension of the mandrel are completed by rotating the internal hexagonal wrench of the corresponding interface, and there are 12 fixing plugs on each set of grid covers. The operation time required for the installation and separation of the grid cover each time is relatively long, and the overall operation efficiency of the equipment is relatively low; and an internal hexagonal wrench needs to be carried additionally each time, and the use process is relatively cumbersome.

[0026] Secondly, the movement and positioning of the mandrel are realized through threads. Due to the influence of the use environment of the arresting grid, the threads may be rusted, and then the threads may be stuck and fail, so that the grid cover cannot be installed and separated.

[0027] The embodiment of the present application provides a grid cover fixing device, and the retraction and extension of the mandrel are realized through the pressing, clockwise rotation or counterclockwise rotation of the mandrel. The whole operation process is simple and fast.

[0028] The following will be described with reference to the drawings of the specification Figures 1-4 The grid cover fixing device will be described in detail.

[0029] The application provides a grating cover plate fixing device, which comprises a mandrel accommodating body 1, a first end cover 11, a hollow cylinder 12 and a second end cover 13, the first end cover 11 and the second end cover 13 are detachably connected with two ends of the hollow cylinder 12 arranged in axial opposite directions respectively, a limiting ring 14 is arranged on the inner surface of the hollow cylinder 12, a center hole of the second end cover 13 is extended by the mandrel a through the first end cover 11 and the hollow cylinder 12; an elastic component 2 is arranged in the hollow cylinder 12 and located in the region between the first end cover 11 and the limiting ring 14; a limiting plate 3 is arranged on the inner surface of the second end cover 13 surrounding the center hole; a limiting element 4 connects the limiting plate 3 and the mandrel a; a limiting pin 5 is abutted with the mandrel a through the hollow cylinder 12; a cap 6 is arranged on the end of the mandrel a and clamped on the first end cover 11.

[0030] Specifically, the contraction and extension of the mandrel a are realized by pressing the cap 6 at the end of the mandrel a, rotating the cap 6 clockwise and rotating the cap 6 counterclockwise, the whole operation process is simple and fast, and no other tools are needed, which greatly simplifies the operation process, shortens the operation time required for each installation and separation of the grating cover plate, and improves the operation efficiency of the whole landing grating.

[0031] Secondly, the up-and-down movement space of the mandrel a is appropriate, and the positioning of the mandrel a is realized by the limiting relationship between the structural protruding part at the end of the mandrel a and the limiting plate 3. The matching structure is simple and reliable, and will not be affected by the use environment of the landing grating, unless the mechanical structure is deformed, the possibility of loosening and even failure caused by environmental factors is excluded.

[0032] The hollow cylinder 12 is uniformly arranged with four installation holes with appropriate position and size for the contraction and extension of the limiting pin 5 in the circumferential direction of the lower wall surface. The first end cover 11 and the hollow cylinder 12 are connected and fixed by using a countersunk screw; the mandrel a is installed in the upper top plate installation hole, and the limiting circular plate at the upper part of the mandrel a and the first end cover 11 form a limiting relationship with each other. The mandrel a is sleeved with the elastic component 2, the elastic component 2 is a mandrel spring, the mandrel spring is a conical pagoda spring, and the cap 6 at the upper part of the mandrel a and the first end cover 11 form a limiting relationship. The mandrel a intermediate region and the limiting ring 14 at the intermediate position inside the hollow cylinder 12 form a limiting relationship. The limiting plate 3 is arranged on the inner surface of the second end cover 13 surrounding the center hole, the limiting element 4 connects the limiting plate 3 and the mandrel a, and the limiting plate 3 is fixed with the hollow cylinder 12 by an internal hexagonal screw. Among them, the limiting plate 3 is matched with the end of the mandrel a in the shape structure, and the mandrel a can form a limiting relationship with the limiting plate 3 by rotating a certain angle while moving up and down.

[0033] The grid cover fixing device is used for fixing the stacked arrangement of the grid cover 91 and the grid panel 92, the grid cover 91 is arranged on the upper surface of the grid panel 92, the mounting hole penetrates the grid cover 91 and the grid panel 92, the grid cover fixing device is inserted into the mounting hole, the grid cover 91 is provided with the grid protection sleeve 81 in the circumferential direction of the mounting hole formed by the grid cover 91, the grid protection sleeve 81 is annular as a whole, the cross-sectional shape of the grid protection sleeve 81 is U-shaped, and the opening end of the grid protection sleeve 81 faces the grid cover 91, and the grid cover 91 is inserted into the inside of the grid protection sleeve 81.

[0034] In some optional embodiments, the first end cover 11 is snap-connected with the hollow cylinder 12, so as to realize the snap-on and off connection of the first end cover 11 with the hollow cylinder 12.

[0035] Specifically, the first end cover 11 is provided with a center hole, the second end cover 13 is provided with a center hole, one end of the mandrel a extends to the center hole of the second end cover 13 after penetrating the center hole of the first end cover 11 and the inside of the hollow cylinder 12, the cap 6 is connected with one end of the mandrel a, the contraction and extension of the mandrel a are realized by pressing the cap 6 at the end of the mandrel a, rotating the cap 6 clockwise and rotating the cap 6 counterclockwise, the whole operation process is simple and fast, and no other tools are needed, which greatly simplifies the operation process, shortens the operation time required for the installation and separation of the grid cover each time, and improves the operation efficiency of the whole carrier landing grid.

[0036] Further, the cap 6 is inserted into the center hole of the first end cover 11, the cap 6 includes a clamping plate 61, a protruding block 62 and a plurality of insertion plates 63, the clamping plate 61 is provided with a center hole, the center hole of the clamping plate 61 coincides with the central axis of the center hole of the first end cover 11, the protruding block 62 is annular, the end of the mandrel a penetrates the center hole of the protruding block 62, optionally, the annular protruding block 62 is at least two pieces spliced together, one end of the protruding block 62 is arranged on the inner surface of the clamping plate 61 which encloses the center hole, the plurality of insertion plates 63 are arranged on the circumferential surface of the lower surface of the clamping plate 61, and the insertion plates 63 are inserted into the center hole of the first cover plate 111. Optionally, the center hole of the first cover plate 111 is in a stepped state for accommodating the cap 6.

[0037] In some optional embodiments, the first end cover 11 includes a first cover plate 111 and a protruding part 112, the first cover plate 111 is arranged at one end of the hollow cylinder 12, and the protruding part 112 is clamped into the inside of the hollow cylinder 12, so as to realize the snap-on and off connection of the first end cover 11 with the hollow cylinder 12.

[0038] Specifically, the first cover plate 111 is connected with the end of the hollow cylinder 12 through a plurality of screws, the plurality of screws are arranged on the circumferential surface of the hollow cylinder 12, so as to realize the snap-on and off connection of the first end cover 11 with the hollow cylinder 12.

[0039] In some optional embodiments, the outer surface of the protruding part 112 is provided with a plurality of protrusions uniformly arranged on the outer surface of the protruding part 112, and the inner surface of the hollow cylinder 12 is provided with a plurality of recesses 121 recessed from the inner surface of the hollow cylinder 12 towards the outer surface, the protrusions and the recesses 121 are arranged one by one, thereby achieving the snap connection of the first end cover 11 to the hollow cylinder 12.

[0040] Specifically, the first end cover 11 is snap connected to the hollow cylinder 12, thereby achieving the snap connection of the first end cover 11 to the hollow cylinder 12. Further, the first end cover 11 includes a first cover plate 111 arranged at one end of the hollow cylinder 12 and a protruding part 112 snap arranged inside the hollow cylinder 12, thereby achieving the snap connection of the first end cover 11 to the hollow cylinder 12. Further, the outer surface of the protruding part 112 is provided with a plurality of protrusions uniformly arranged on the outer surface of the protruding part 112, and the inner surface of the hollow cylinder 12 is provided with a plurality of recesses 121 recessed from the inner surface of the hollow cylinder 12 towards the outer surface, the protrusions and the recesses 121 are arranged one by one, thereby achieving the snap connection of the first end cover 11 to the hollow cylinder 12.

[0041] In some optional embodiments, the second end cover 13 is connected to the hollow cylinder 12 by a screw, thereby achieving the detachable connection of the second end cover 13 to the hollow cylinder 12.

[0042] In some optional embodiments, the elastic component 2 is a conical spring, and the diameter of the conical spring becomes smaller and smaller in the direction from the first end cover 11 to the second end cover 13.

[0043] In some optional embodiments, a plurality of limiting pins 5 are arranged, and the hollow cylinder 12 is provided with a plurality of limiting holes along the circumference thereof, and each limiting pin 5 extends through each limiting hole to the inside of the hollow cylinder 12.

[0044] In some optional embodiments, the limiting pin 5 includes a pin body 51 and a spring 52, the pin body 51 is inserted into the spring 52, and the spring 52 is arranged in the area between the retaining ring and the inner surface of the hollow cylinder 12.

[0045] Specifically, the spring 52 abuts against the pin body 51, the limiting plate 3 is installed in advance in the central hole of the second end cover 13, the limiting plate 3 is connected to the mandrel a by the limiting element 4, and the limiting element 4 is a bolt. The diameter of the part of the mandrel a close to the first end cover 11 is larger than the diameter of the part of the mandrel a close to the second end cover 13, the mandrel a moves up and down by the relationship between the diameters of the mandrel a, and the contraction and extension of the limiting pin 5 are linked, thereby achieving the locking and loosening of the new type of fixed plug of the grille cover plate.

[0046] In some optional embodiments, a rubber sleeve 7 is further included, which is sleeved on the outer surface of the hollow cylinder 12.

[0047] Specifically, the outer side of the hollow cylinder 12 is covered with a wear-resistant rubber sleeve 7, which is mounted in a vulcanization manner, and thus a tight fit can be formed at the position with the smallest diameter of the inner surface of the honeycomb hole of the grid panel.

[0048] In some optional embodiments, the limiting element 4 is a limiting bolt.

[0049] The assembly process of the grid cover plate fixing device provided by the present application is as follows: first, the elastic component 2 is assembled with the mandrel a, and then the two are forced to be inserted into the inside of the hollow cylinder 12, and the pin spring 52 is pushed against the pin body 51 to be limited in advance when being inserted, and is installed in the limiting hole reserved in the hollow cylinder 12. At this time, the first end cover 11 is buckled with the end part of the hollow cylinder 12, and the countersunk screw is used to connect the first end cover 11 with the hollow cylinder 12, the internal hexagonal screw is used to install the second end cover 13 with the hollow cylinder 12, and finally, the internal hexagonal screw is used to connect the limiting plate 3 with the mandrel a. At this time, the mandrel a is at the position of the maximum extension amount, the relative position of the mandrel a and the limiting pin 5 is at the narrow end of the mandrel a, the limiting pin 5 is fully retracted, and the grid cover plate fixing device is in a loosened state, which can freely enter and exit the grid fixing hole. In this state, the grid cover plate fixing device is installed into the grid mounting hole, the first end cover 11 presses the grid cover plate, and the fastening of the grid cover plate is completed.

[0050] The above is the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A grating cover fixing device characterized by comprising: The utility model relates to a kind of core shafts, including: Core shaft containing body (1), including first end cover (11), hollow cylinder (12) and second end cover (13), the first end cover (11) and the second end cover (13) are respectively with the two ends of the hollow cylinder (12) axially opposite arrangement detachable connection, the inner surface of the hollow cylinder (12) is provided with limit ring (14), core shaft (a) extends to the center hole of the second end cover (13) through the first end cover (11) and the hollow cylinder (12); Resilient component (2) is arranged in the hollow cylinder (12), and is located in the region between the first end cover (11) and the limit ring (14); Limiting plate (3) is arranged on the inner surface of the center hole enclosed by the second end cover (13); Limiting element (4) connects the limiting plate (3) and the core shaft (a); Limiting pin (5) is abutted with the core shaft (a) through the hollow cylinder (12); Cap (6) is arranged on the end of the core shaft (a), and is clamped in the first end cover (11).

2. The grating cover fixing device according to claim 1, characterized by The first end cover (11) is snap-connected with the hollow cylinder (12).

3. The grating cover fixing device according to claim 2, characterized by The first end cover (11) includes a first cover plate (111) and a protruding portion (112), the first cover plate (111) is arranged at one end of the hollow cylinder (12), and the protruding portion (112) is clamped in the interior of the hollow cylinder (12).

4. The grating cover fixing device according to claim 3, characterized by The outer surface of the protruding portion (112) is provided with a plurality of protrusions, the plurality of protrusions are uniformly arranged on the outer surface of the protruding portion (112), the inner surface of the hollow cylinder (12) is provided with a plurality of recesses (121) recessed from the inner surface to the outer surface of the hollow cylinder (12), and the protrusions and the recesses (121) are one-to-one correspondingly arranged.

5. The grating cover fixing device according to claim 1, wherein The second end cover (13) is connected with the hollow cylinder (12) by a screw.

6. The grating cover fixing device according to claim 1, wherein The resilient component (2) is a conical spring, and the diameter of the conical spring becomes smaller and smaller in the direction from the first end cover (11) to the second end cover (13).

7. The grating cover securing device of claim 1, wherein The limiting pin (5) is provided with a plurality of limiting holes along the circumference of the hollow cylinder (12), and each limiting pin (5) extends to the interior of the hollow cylinder (12) through each limiting hole.

8. The grating cover fixing device according to claim 7, characterized by The limiting pin (5) includes a pin body (51) and a spring (52), the pin body (51) is provided with a stop ring, the pin body (51) is inserted into the spring (52), and the spring (52) is arranged in the region between the stop ring and the inner surface of the hollow cylinder (12).

9. The grating cover fixing device according to claim 1, wherein It also includes a rubber sleeve (7) sleeved on the outer surface of the hollow cylinder (12).

10. The grating cover securing device of claim 1, wherein, The limiting element (4) is a limiting bolt.

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