Telescopic steel grate cover plate for airport flying area

Abstract

The utility model belongs to the technical field of airport flying area cover plates, and relates to a telescopic steel grate cover plate for an airport flying area. The telescopic steel grate cover plate comprises a left telescopic cover plate unit and a right telescopic cover plate unit which are parallel to each other, the left telescopic cover plate unit comprises a left comb tooth mechanism and a left sliding roller shaft, the right telescopic cover plate unit comprises a right comb tooth mechanism and a right sliding roller shaft, the left comb tooth mechanism and the right comb tooth mechanism are oppositely arranged in a crossed mode, and the left sliding roller shaft penetrates through the left comb tooth mechanism and the right comb tooth mechanism; the left side sliding roller shaft is connected with the left side comb tooth mechanism and slides in the axial direction of the right side comb tooth mechanism, the right side sliding roller shaft penetrates through the right side comb tooth mechanism and the left side comb tooth mechanism, and the right side sliding roller shaft is connected with the right side comb tooth mechanism and slides in the axial direction of the left side comb tooth mechanism. According to the utility model, the temperature or load stress in the pavement slab close to the cover plate ditch is effectively relieved, the deformation requirement of the pavement slab is met, the flatness of the pavement structure of the airport flying area is ensured, and the normal use of pavement facilities is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of airport flight area cover plate, and relates to a retractable steel grate cover plate for airport flight area, which is used in the airport flight area to eliminate the stress of the plate body at the ditch edge wall of the airport flight area cover plate. BACKGROUND

[0002] The airport flight area refers to a site for use in taking off, landing, taxiing and parking of an airplane, including a runway, a landing strip, a runway end safety area, a taxiway, a tarmac and an area around the airport with limited requirements for obstacles. The airport flight area, as a key facility of the airport field, plays an important role in ensuring the safety of airplane operation. The airport flight area is wide and flat, and in order to ensure the dryness and stability of the airplane parking position, the runway and other parts, the rainwater, melted snow water and other water flow in the parts need to be collected and guided through the drainage ditch and discharged from the airport flight area. In order to ensure the safety of airplane operation, the airport flight area often uses a cover plate ditch as a drainage facility of the airport pavement, and the cover plate ditch is generally a rectangular concrete or reinforced concrete trench, which is covered with a perforated reinforced concrete cover plate or a steel grate cover plate. The steel grate cover plate is favored by the airport constructors due to its excellent drainage performance; in the airport flight area, the steel grate ditch cover plate is arranged by setting a steel grate frame at the end of the pavement slab, and the steel grate is directly placed on the frame, the steel grate has a flat steel, a toothed flat steel and a twisted steel, and the steel grate is welded by flat steel and twisted square steel or flat steel, which is a non-deformable structure.

[0003] The patent document with the publication number CN115125831A discloses a shallow-buried multi-directional displacement bridge expansion equipment, which comprises a roadbed, a first comb plate and a second comb plate, a first mounting block is installed on the first comb plate, and a second mounting block is installed on the second mounting block; the first comb plate and the second comb plate are fixedly arranged on the roadbed, the combs on the first comb plate and the combs on the second comb plate are staggered and inserted, and the first comb plate and the second comb plate can be displaced in the gap; the first mounting block is fixedly arranged on one side of the first comb plate close to the roadbed, and the other side of the first mounting block is fixedly connected with the roadbed; the second mounting block is fixedly arranged on one side of the second comb plate close to the roadbed, the second mounting block is provided with a plurality of second mounting blocks, the other side of the second mounting block is fixedly connected with the roadbed, and the second mounting block is staggered and inserted with the first mounting block. Although the anchoring of the comb plate is firm and stable, the cover ditch is arranged close to the outer side of the pavement plate, which is a discontinuous zone between the two pavement plates. In the high-temperature weather in summer, the pavement plate expands due to the thermal expansion effect, causing the overall volume of the pavement plate structure to expand and stretch into the free space of the drainage ditch. In addition, under the action of the load of the aircraft wheel, the pavement plate also deforms in the plane direction. Due to the limiting effect of the steel grate cover plate on the top of the pavement plate near the cover ditch, the pavement plate cannot realize its free stretching, and temperature or load stress is generated inside the pavement plate. Further, with the increase of the internal stress, the wall of the ditch is dislocated, the surface of the cover ditch is deformed, and finally the structural damage of the cover ditch and the fracture of the pavement plate are caused, which destroys the flatness of the pavement and causes the pavement in the relevant area to be unable to be normally used. Practical new type content

[0004] In view of the technical problem that the increase of internal stress of the existing steel grate cover plate causes the wall of the ditch to be dislocated and the surface of the cover ditch to be deformed, the utility model provides a stretchable steel grate cover plate for an airport flight area, which can effectively relieve the temperature or load stress inside the pavement plate near the cover ditch, meet the deformation demand of the pavement plate, ensure the flatness of the pavement structure of the airport flight area, and ensure the normal use of the pavement facilities.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0006] A stretchable steel grate cover plate for an airport flight area, comprising left and right stretchable cover plate units arranged in parallel; the left stretchable cover plate unit comprises a left comb mechanism and a left sliding roller shaft, and the right stretchable cover plate unit comprises a right comb mechanism and a right sliding roller shaft;

[0007] The left side comb mechanism and the right side comb mechanism are oppositely and crossly arranged, the left side sliding roller shaft penetrates the left side comb mechanism and the right side comb mechanism, the left side sliding roller shaft is fixedly connected with the left side comb mechanism and slides in the axial direction of the right side comb mechanism, and the right side sliding roller shaft penetrates the right side comb mechanism and the left side comb mechanism, the right side sliding roller shaft is fixedly connected with the right side comb mechanism and slides in the axial direction of the left side comb mechanism.

[0008] Further limited, the left side comb mechanism includes a plurality of left side comb plates, and the plurality of left side comb plates are uniformly distributed along the axial direction of the left side sliding roller shaft; one left side sliding cavity is correspondingly arranged on each left side comb plate; the left side sliding roller shaft penetrates the left side sliding cavity, and the right side sliding roller shaft slides in the axial direction of the left side sliding cavity.

[0009] Further limited, the right side comb mechanism includes a plurality of right side comb plates, and the plurality of right side comb plates are uniformly distributed along the axial direction of the right side sliding roller shaft; the plurality of left side comb plates and the plurality of right side comb plates are crossly arranged; one right side sliding cavity is correspondingly arranged on each right side comb plate; the right side sliding roller shaft penetrates the right side sliding cavity and the left side sliding cavity, and the left side sliding roller shaft slides in the axial direction of the right side sliding cavity.

[0010] Further limited, the left side telescopic cover plate unit further includes a left side anchoring base plate, the left side comb mechanism is arranged on the left side anchoring base plate, and the axial direction of the left side comb mechanism is perpendicular to the axial direction of the left side anchoring base plate; the right side telescopic cover plate unit further includes a right side anchoring base plate, the right side comb mechanism is arranged on the right side anchoring base plate, and the axial direction of the right side comb mechanism is perpendicular to the axial direction of the right side anchoring base plate; the left side anchoring base plate and the right side anchoring base plate are arranged in parallel, the left side sliding roller shaft is close to the right side anchoring base plate, and the right side sliding roller shaft is close to the left side anchoring base plate.

[0011] Further limited, the left side anchoring base plate and the right side anchoring base plate are L-shaped base plates.

[0012] Further limited, the airport flight area telescopic steel grating cover further includes a left side fixed edge beam located above the left side anchoring base plate; and the left side fixed edge beam is clamped with the left side anchoring base plate.

[0013] Further limited, the airport flight area telescopic steel grating cover further includes a right side fixed edge beam located above the right side anchoring base plate; the right side fixed edge beam is clamped with the right side anchoring base plate; and the right side fixed edge beam and the left side fixed edge beam are arranged in parallel.

[0014] Further limited, the left side fixed edge beam and the right side fixed edge beam are rectangular beams.

[0015] The airport flight area telescopic steel grating cover has the advantages that:

[0016] 1. The utility model discloses a left side comb mechanism and right side comb mechanism are opposite and cross arrangement, left side sliding roller axle is through left side comb mechanism and right side comb mechanism, left side sliding roller axle is connected fixed with left side comb mechanism and slides in the axial direction of right side comb mechanism, right side sliding roller axle is through right side comb mechanism and left side comb mechanism, right side sliding roller axle is connected fixed with right side comb mechanism and slides in the axial direction of left side comb mechanism, when cement panel produces extension deformation, drives left side telescopic apron unit and right side telescopic apron unit movement, and the cross arrangement left side comb mechanism and right side comb mechanism provide telescopic space for the transverse deformation of the airport flight area retractable steel grate apron, eliminate the stress in the cement panel at apron ditch edge wall position, avoid the extrusion damage of ditch body and cement panel, effectively alleviate the temperature or load stress of the inside of apron ditch adjacent pavement panel in the airport flight area, meet the deformation demand of pavement panel, ensure the flatness of airport flight area pavement structure.

[0017] 2. In the utility model, the left side comb mechanism includes a plurality of left side comb plates, the plurality of left side comb plates are evenly distributed along the axial direction of the left side sliding roller axle; the right side comb mechanism includes a plurality of right side comb plates, the plurality of right side comb plates are evenly distributed along the axial direction of the right side sliding roller axle; the plurality of left side comb plates and the plurality of right side comb plates are cross arranged; under the action of vertical wheel load, the left side comb mechanism and the right side comb mechanism can play a firm load support role, and the load support capacity of the apron is improved; in addition, the cross arrangement left side comb mechanism and right side comb mechanism can also guarantee good drainage effect.

[0018] 3. In the utility model, a left side sliding cavity is arranged on each left side comb plate; a right side sliding cavity is arranged on each right side comb plate, which can facilitate the left side sliding roller axle and the right side sliding roller axle to pass through, ensure that the left side sliding roller axle slides in the axial direction of the right side sliding cavity and the right side sliding roller axle slides in the axial direction of the left side sliding cavity, realize the free expansion of the cement panel adjacent to the apron ditch under the load loading or temperature rising state, and thus the purpose of eliminating the plate stress at the edge wall of the apron ditch in the airport flight area is achieved.

[0019] 4. The utility model not only has simple structure, scientific and reasonable, easy to realize, but also can fundamentally solve the frequent maintenance and replacement problem of pavement panel at apron ditch edge wall, guarantee the service performance and service life of pavement facilities, and has important engineering significance for improving the construction level of airport flight area.

[0020] 5. The utility model discloses an airport flight area retractable steel grate apron, which can be used in the standardized production of newly-built pavement engineering in the airport flight area, and can also be used in the standardized production reconstruction of existing pavement panels in the airport flight area. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the airport flight area telescopic steel grating cover plate structure schematic view of the utility model;

[0022] Figure 2 It is the airport flight area telescopic steel grating cover plate plane schematic view of the utility model;

[0023] Figure 3 It is the left side telescopic cover plate unit schematic view of the utility model;

[0024] Figure 4 It is the right side telescopic cover plate unit schematic view of the utility model;

[0025] Figure 5 It is the airport flight area telescopic steel grating cover plate layout schematic view of the utility model;

[0026] Among them:

[0027] 1 - cover plate ditch, 2 - ditch body side wall, 201 - anchoring platform, 3 - left side fixed edge beam, 4 - right side fixed edge beam, 5 - left side telescopic cover plate unit, 501 - left side anchoring base plate, 502 - left side comb mechanism, 503 - left side sliding roller shaft, 504 - left side sliding cavity, 6 - right side telescopic cover plate unit, 601 - right side anchoring base plate, 602 - right side comb mechanism, 603 - right side sliding roller shaft, 604 - right side sliding cavity, 7 - screw hole, 701 - screw. DETAILED DESCRIPTION

[0028] The technical scheme protected by the utility model will be described in detail in combination with the drawings and embodiments. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments. Based on the described embodiments of the application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the application.

[0029] Unless otherwise defined, the technical terms or scientific terms used in the application should be understood as the usual meaning understood by those skilled in the art. The "first", "second" and similar words used in the application do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] Example 1

[0031] See Figure 1 The left side telescopic cover unit 5 comprises a left side comb mechanism 502 and a left side sliding roller shaft 503, and the right side telescopic cover unit 6 comprises a right side comb mechanism 602 and a right side sliding roller shaft 603.

[0032] In the embodiment, the left side comb mechanism 502 and the right side comb mechanism 602 are oppositely and crossly arranged, the left side sliding roller shaft 503 penetrates the left side comb mechanism 502 and the right side comb mechanism 602, the left side sliding roller shaft 503 is fixedly connected with the left side comb mechanism 502 and slides in the axial direction of the right side comb mechanism 602, the right side sliding roller shaft 603 penetrates the right side comb mechanism 602 and the left side comb mechanism 502, and the right side sliding roller shaft 603 is fixedly connected with the right side comb mechanism 602 and slides in the axial direction of the left side comb mechanism 502.

[0033] In the embodiment, the left side comb mechanism 502 and the right side comb mechanism 602 are oppositely and crossly arranged, the left side sliding roller shaft 503 penetrates the left side comb mechanism 502 and the right side comb mechanism 602, the left side sliding roller shaft 503 penetrates the left side comb mechanism 502 and the right side comb mechanism 602, the left side sliding roller shaft 503 is fixedly connected with the left side comb mechanism 502 and slides in the axial direction of the right side comb mechanism 602, the right side sliding roller shaft 603 penetrates the right side comb mechanism 602 and the left side comb mechanism 502, and the right side sliding roller shaft 603 is fixedly connected with the right side comb mechanism 602 and slides in the axial direction of the left side comb mechanism 502.

[0034] In use, the left comb mechanism 502 and the right comb mechanism 602 are respectively fixed on the groove body side wall 2 corresponding to the two sides of the cover groove 1, so that when the airport flight area uses the telescopic steel grating cover to bear external force, causing the cement panel on both sides of the cover groove 1 to produce extension deformation, the cement panel body moves to the center line direction of the cover groove 1, driving the left telescopic cover unit 5 and the right telescopic cover unit 6 to move. At this time, the right sliding roller shaft 603 slides in the axial direction of the left comb mechanism 502 under the action of external force, and the left sliding roller shaft 503 slides in the axial direction of the right comb mechanism 602, providing telescopic space for the generated transverse deformation, eliminating the stress in the cement panel at the position of the cover groove 1 side wall, avoiding the extrusion damage of the groove body and the cement panel, ensuring the flatness of the airport flight area pavement structure, and protecting the pavement facility performance and service life. In addition, by arranging the left comb mechanism 502 and the right comb mechanism 602 on the cover groove 1, the cover groove 1 has good drainage effect and excellent load supporting performance.

[0035] Embodiment 2

[0036] Referring to Figure 1 and Figure 2 On the basis of embodiment 1, the left comb mechanism 502 of the telescopic steel grating cover for the airport flight area includes a plurality of left comb plates, which are uniformly distributed along the axial direction of the left sliding roller shaft 503; each left comb plate is provided with a corresponding left sliding cavity 504; the left sliding roller shaft 503 penetrates the left sliding cavity 504, and the right sliding roller shaft 603 slides in the axial direction of the left sliding cavity 504.

[0037] The right comb mechanism 602 includes a plurality of right comb plates, which are uniformly distributed along the axial direction of the right sliding roller shaft 603; the plurality of left comb plates and the plurality of right comb plates are cross arranged; each right comb plate is provided with a corresponding right sliding cavity 604; the right sliding roller shaft 603 penetrates the right sliding cavity 604 and the left sliding cavity 504, and the left sliding roller shaft 503 slides in the axial direction of the right sliding cavity 604.

[0038] Preferably, the left comb plate and the right comb plate are both "U"-shaped metal members, preferably Q235 low carbon steel or stainless steel. The middle part of the "U"-shaped metal member is the sliding cavity. The left sliding roller shaft 503 and the right sliding roller shaft 603 are cylindrical metal members.

[0039] Referring to Figure 3 and Figure 4, the "U" shaped open end (left end) of the left comb plate is fixed on the groove body side wall 2 on both sides of the cover plate groove 1, the other end (right end) of the left comb plate is located between two adjacent right comb plates, the left sliding roller shaft 503 is located at the right end of the left sliding cavity 504 and is welded and fixed with the left comb mechanism 502; the "U" shaped open end (right end) of the right comb plate is fixed on the groove body side wall 2 on both sides of the cover plate groove 1, the other end (left end) of the right comb plate is located between two adjacent left comb plates, the right sliding roller shaft 603 is located at the left end of the right sliding cavity 604 and is welded and fixed with the right comb mechanism 602. The left sliding roller shaft 503 also passes through the middle part of the right sliding cavity 604, the right sliding roller shaft 603 also passes through the middle part of the left sliding cavity 504, the left sliding roller shaft 503 and the right comb plate are in a slidable contact state, the right sliding roller shaft 603 and the left comb plate are in a slidable contact state, thereby providing expansion space for the transverse deformation of the telescopic steel grating cover plate for the airport flight area.

[0040] It is particularly pointed out that the size specifications of the left comb plate and the right comb plate are consistent, the height of the left sliding cavity 504 and the height of the right sliding cavity 604 are consistent, the diameter of the left sliding roller shaft 503 is 0.4mm-1.0mm lower than the height of the left sliding cavity 504, so as to ensure that the left sliding roller shaft 503 and the right sliding roller shaft 603 have good sliding effect.

[0041] Example 3

[0042] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 , on the basis of example 1, the telescopic steel grating cover plate for the airport flight area of the present embodiment further comprises a left anchoring base plate 501, the left comb mechanism 502 is arranged on the left anchoring base plate 501, and the axial direction of the left comb mechanism 502 is perpendicular to the axial direction of the left anchoring base plate 501; the telescopic steel grating cover plate further comprises a right anchoring base plate 601, the right comb mechanism 602 is arranged on the right anchoring base plate 601, and the axial direction of the right comb mechanism 602 is perpendicular to the axial direction of the right anchoring base plate 601; the left anchoring base plate 501 and the right anchoring base plate 601 are arranged in parallel, the left sliding roller shaft 503 is close to the right anchoring base plate 601; the right sliding roller shaft 603 is close to the left anchoring base plate 501.

[0043] The left anchoring base plate 501 and the right anchoring base plate 601 are both L-shaped base plates. The longitudinal section of the left anchoring base plate 501 and the longitudinal section of the right anchoring base plate 601 are both "L" shaped structures, and the left anchoring base plate 501 and the right anchoring base plate 601 are clamped on the groove body side wall 2 on both sides of the cover plate groove 1. At this time, the left comb tooth mechanism 502 and the right comb tooth mechanism 602 are located on the groove surface of the cover plate groove 1, achieving the purpose of eliminating the plate stress at the edge wall of the cover plate groove 1.

[0044] In order to ensure the stability of the left anchoring base plate 501 and the right anchoring base plate 601, the top surface of the left anchoring base plate 501 and the top surface of the right anchoring base plate 601 are both provided with screw holes 7, and the screw holes 7 are fixed on the groove body side wall 2 on both sides of the cover plate groove 1 by means of the screws 701.

[0045] In implementation, the screw holes 7 are multiple, and the multiple screw holes 7 are uniformly arranged on the top surface of the left anchoring base plate 501 and the top surface of the right anchoring base plate 601 along the axial direction of the cover plate groove 1. For example, the screw holes 7 are three, four, five or more, and one screw 701 is adapted to each screw hole 7.

[0046] In use, the connecting piece composed of the screw hole 7 and the screw 701 realizes the dismounting and mounting of the left fixed side beam 3 and the left anchoring base plate 501 and the right fixed side beam 4 and the right anchoring base plate 601, and realizes the maintenance, replacement and dismounting of the stretchable steel grating cover plate for airport flight area.

[0047] Embodiment 4

[0048] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 , on the basis of Embodiment 3, the stretchable steel grating cover plate for airport flight area further comprises a left fixed side beam 3 located above the left anchoring base plate 501; and the left fixed side beam 3 is clamped with the left anchoring base plate 501.

[0049] In this embodiment, the stretchable steel grating cover plate for airport flight area further comprises a right fixed side beam 4 located above the right anchoring base plate 601; the right fixed side beam 4 is clamped with the right anchoring base plate 601; and the right fixed side beam 4 and the left fixed side beam 3 are arranged in parallel.

[0050] Referring to Figure 5The left fixed side beam 3 and the right fixed side beam 4 are both rectangular beams. The longitudinal section of the left fixed side beam 3 is rectangular, and the longitudinal section of the right fixed side beam 4 is rectangular. The left fixed side beam 3 is fixed on the left side of the groove body side wall 2 of the cover plate groove 1 by means of epoxy bonding or metal welding, and the right fixed side beam 4 is fixed on the right side of the groove body side wall 2 of the cover plate groove 1 by means of epoxy bonding or metal welding.

[0051] In order to improve the connection stability of the left fixed side beam 3 and the right fixed side beam 4 and the groove body side wall 2, an anchor platform 201 is fixed and arranged on the top surface of the groove body side wall 2 on both sides of the cover plate groove 1 by means of embedding anchor rods or epoxy bonding during implementation.

[0052] Specifically, the anchor platform 201 is a strip-shaped metal member with a flat upper surface. An anchoring member is arranged below the anchor platform 201 to fix the anchor platform 201 on the top surface of the groove body side wall 2 on both sides of the cover plate groove 1, thereby ensuring the stability of the left fixed side beam 3 and the right fixed side beam 4 during installation and fixation.

[0053] Taking the construction of the cover plate groove 1 of a newly-built pavement project in an airport flight area as an example, the installation method of the stretchable steel grating cover plate for the airport flight area provided by the utility model comprises the following steps:

[0054] 1) The positions of the left fixed side beam 3 and the right fixed side beam 4 are pre-reserved on the groove body side wall 2 on both sides of the cover plate groove 1 according to the design scheme;

[0055] 2) The anchor platform 201 is respectively installed on the upper surface of the groove body side wall 2 on both sides of the cover plate groove 1;

[0056] 3) After the groove body side wall 2 is hardened, the left fixed side beam 3 and the right fixed side beam 4 are laid;

[0057] 4) Finally, the left stretchable cover plate unit 5 is installed on the left fixed side beam 3, and the right stretchable cover plate unit 6 is installed on the right fixed side beam 4.

[0058] Taking the construction of the cover plate groove 1 of a reconstructed pavement project in an airport flight area as an example, the installation method of the stretchable steel grating cover plate for the airport flight area provided by the utility model comprises the following steps:

[0059] 1) The groove body side wall 2 on both sides of the cover plate groove 1 is milled according to the design scheme to form the positions of the left fixed side beam 3 and the right fixed side beam 4;

[0060] 2) The anchor platform 201 is bonded on the top surface of the groove body side wall 2 on both sides of the cover plate groove 1 by means of epoxy;

[0061] 3) After the epoxy is hardened, the left fixed side beam 3 and the right fixed side beam 4 are laid.

[0062] 4) Finally, install the left side telescopic cover plate unit 5 on the left side fixed beam 3, and install the right side telescopic cover plate unit 6 on the right side fixed beam 4.

[0063] In the utility model, the cover ditch 1 of the airport flight area is respectively provided with ditch body side walls 2 on two sides, the top of the two ditch body side walls 2 is respectively provided with an anchoring platform 201, the left side fixed beam 3 and the right side fixed beam 4 are respectively arranged on the anchoring platform 201 on the two sides of the cover ditch 1, the left side telescopic cover plate unit 5 is clamped on the left side fixed beam 3, the right side telescopic cover plate unit 6 is clamped on the right side fixed beam 4, the left side telescopic cover plate unit 5 and the right side telescopic cover plate unit 6 are comb-tooth-shaped and cross-laid, when the cement panel produces extension deformation, the cement panel body pushes the anchoring platform 201 to move to the center line direction of the cover ditch 1, simultaneously drives the left side telescopic cover plate unit 5 and the right side telescopic cover plate unit 6 of the airport flight area telescopic steel grating cover plate to move, the left side telescopic cover plate unit 5 and the right side telescopic cover plate unit 6 that are comb-tooth-shaped and cross-laid provide telescopic space for the transverse deformation of the airport flight area telescopic steel grating cover plate, eliminate the stress in the cement panel at the cover ditch side wall position, avoid the extrusion damage of the ditch body and the cement panel, greatly satisfy the deformation requirement of the road panel, ensure the flatness of the airport flight area pavement structure, guarantee the normal operation of the pavement facility, improve the service period of the pavement.

[0064] The above-described specific embodiments have further detailed the purposes, technical schemes and beneficial effects of the utility model, and it should be understood that the above-described is only the specific embodiments of the utility model and is not used for limiting the protection scope of the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A retractable steel grate cover for airport flight areas, characterized in that, It includes a left telescopic cover plate unit (5) and a right telescopic cover plate unit (6) arranged in parallel; the left telescopic cover plate unit (5) includes a left comb mechanism (502) and a left sliding roller shaft (503), and the right telescopic cover plate unit (6) includes a right comb mechanism (602) and a right sliding roller shaft (603); The left comb mechanism (502) and the right comb mechanism (602) are arranged opposite to each other and cross each other. The left sliding roller shaft (503) passes through the left comb mechanism (502) and the right comb mechanism (602). The left sliding roller shaft (503) is connected and fixed to the left comb mechanism (502) and slides axially on the right comb mechanism (602). The right sliding roller shaft (603) passes through the right comb mechanism (602) and the left comb mechanism (502). The right sliding roller shaft (603) is connected and fixed to the right comb mechanism (602) and slides axially on the left comb mechanism (502).

2. The retractable steel grate cover for airport flight areas according to claim 1, characterized in that, The left comb mechanism (502) includes multiple left comb plates, which are evenly distributed along the axial direction of the left sliding roller shaft (503); each left comb plate is provided with a corresponding left sliding cavity (504); the left sliding roller shaft (503) passes through the left sliding cavity (504), and the right sliding roller shaft (603) slides in the axial direction of the left sliding cavity (504).

3. The retractable steel grate cover for airport flight areas according to claim 2, characterized in that, The right-side comb mechanism (602) includes multiple right-side comb plates, which are evenly distributed along the axial direction of the right-side sliding roller shaft (603); multiple left-side comb plates and multiple right-side comb plates are arranged in a cross pattern; each right-side comb plate is provided with a corresponding right-side sliding cavity (604); the right-side sliding roller shaft (603) passes through the right-side sliding cavity (604) and the left-side sliding cavity (504), and the left-side sliding roller shaft (503) slides in the axial direction of the right-side sliding cavity (604).

4. The retractable steel grate cover for airport flight areas according to claim 1, characterized in that, The left telescopic cover unit (5) further includes a left anchoring base plate (501), and the left comb tooth mechanism (502) is distributed on the left anchoring base plate (501). The axial direction of the left comb tooth mechanism (502) is perpendicular to the axial direction of the left anchoring base plate (501). The right telescopic cover unit (6) further includes a right anchoring base plate (601), and the right comb tooth mechanism (602) is distributed on the right anchoring base plate (601). The axial direction of the right comb tooth mechanism (602) is perpendicular to the axial direction of the right anchoring base plate (601). The left anchoring base plate (501) and the right anchoring base plate (601) are arranged in parallel. The left sliding roller shaft (503) is close to the right anchoring base plate (601). The right sliding roller shaft (603) is close to the left anchoring base plate (501).

5. The retractable steel grate cover for airport flight areas according to claim 4, characterized in that, Both the left anchoring substrate (501) and the right anchoring substrate (601) are L-shaped substrates.

6. The retractable steel grate cover for airport flight areas according to claim 4, characterized in that, The retractable steel grate cover for the airport flight area also includes a left fixed side beam (3) located above the left anchor base plate (501); the left fixed side beam (3) is engaged with the left anchor base plate (501).

7. The retractable steel grate cover for airport flight areas according to claim 6, characterized in that, The retractable steel grate cover for the airport flight area also includes a right fixed side beam (4) located above the right anchor base plate (601); the right fixed side beam (4) is snapped into the right anchor base plate (601); the right fixed side beam (4) and the left fixed side beam (3) are arranged in parallel.

8. The retractable steel grate cover for airport flight areas according to claim 7, characterized in that, Both the left fixed side beam (3) and the right fixed side beam (4) are rectangular beams.

Images