Airport well lid with locking structure

Abstract

The utility model discloses an airport well lid with a locking structure, which comprises a well lid, a well body and a mounting pad, the well body is arranged at the top end of the mounting pad, the well lid is arranged at the top end of the well body, a well lid sealing ring is arranged at the joint of the well lid and the well body, and a locking mechanism is arranged in the well lid; the locking mechanism comprises a mounting groove formed in the side wall of the well lid, a guide positioning sleeve is fixedly connected into the mounting groove, a lock pin main shaft is slidably connected into the mounting groove, the position, close to the outer side end, of the lock pin main shaft is slidably connected with the guide positioning sleeve, a limiting groove is formed in the upper portion of the inner side wall of the well body, and the side end of the lock pin main shaft is connected with the limiting groove in a clamped mode. In conclusion, the well lid overcomes the defects in the prior art, is reasonable in design, is provided with the locking mechanism, can avoid displacement of the well lid due to extreme weather or external force, and has high social use value and application prospects.

Description

Technical Field

[0001] The utility model relates to the technical field of airport manhole covers, in particular to an airport manhole cover with a locking structure. Background Technique

[0002] At present, in the airport snow removal operation in winter, due to the lack of an effective locking device for the DJ-47 manhole cover, the manhole cover is frequently blown off by the snow blower, and the pulling rope breaks, resulting in property losses and potential operation safety hazards. At the same time, although the existing DJ-20 manhole cover is equipped with a rotary locking pin shaft, the DJ-47 manhole cover is only equipped with an anti-dragging zipper, which does not meet the requirements of "Civil Airport Flight Area Catch Basin Covers and Manhole Covers" for the manhole covers on the apron to have a locking device. In view of this, in order to solve the above problems, a kind of airport manhole cover with a locking structure that can fix the manhole cover is provided. Content of the Utility Model

[0003] In order to solve the problems mentioned in the above background technique, the utility model provides an airport manhole cover with a locking structure.

[0004] In order to achieve the above object, the utility model adopts the following technical scheme:

[0005] An airport manhole cover with a locking structure, including a manhole cover, a well body and a mounting pad. The well body is arranged at the top of the mounting pad, the manhole cover is arranged at the top of the well body, and a manhole cover sealing ring is arranged at the connection between the manhole cover and the well body. A locking mechanism is arranged inside the manhole cover;

[0006] The locking mechanism includes a mounting groove opened on the side wall of the manhole cover. A guiding and positioning sleeve is fixedly connected inside the mounting groove. A locking pin main shaft is slidably connected inside the mounting groove. The position of the locking pin main shaft near the outer end is slidably connected with the guiding and positioning sleeve. A limiting groove is opened at the upper part of the inner side wall of the well body, and the side end of the locking pin main shaft is snap-fitted with the limiting groove.

[0007] Preferably, an arc groove is arranged on the circumferential side wall of the locking pin main shaft, and a countersunk cross-head screw is arranged at the top of the manhole cover. The bottom end of the countersunk cross-head screw is snap-fitted with the arc groove.

[0008] Preferably, a guiding block is arranged at the bottom end of the manhole cover. A sliding plate strip is slidably connected to the guiding block. The outer end of the sliding plate strip is fixedly connected with the locking pin main shaft through a single-slot pin. A main shaft is rotatably connected inside the manhole cover. The bottom of the main shaft is eccentrically rotatably connected with a connecting plate. The outer end of the connecting plate is rotatably connected with the inner side end of the sliding plate strip.

[0009] Preferably, a countersunk cross-head screw is arranged at the top of the manhole cover, and a round nut is arranged on the countersunk cross-head screw. The round nut is fixedly connected with the main shaft.

[0010] Preferably, an internal hexagonal set screw is arranged at the bottom end of the manhole cover. The top end of the internal hexagonal set screw abuts against the guiding and positioning sleeve.

[0011] Preferably, an inner cylinder is provided at the top of the mounting pad, a connecting pipe is provided on the mounting pad, a bottom flange is provided at the top of the connecting pipe, and a special-shaped sealing ring is provided at the top of the inner cylinder.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. Rotating the countersunk cross screw with a hexagonal tool can drive the main shaft to rotate. Since the connecting plate is eccentrically arranged, it can drive the connecting plate to rotate. At this time, the slide bar is driven to move outward on the guide block. At this time, the side end of the locking pin main shaft is engaged with the limiting groove, and the manhole cover is locked with the well body, which can prevent the risk of displacement of the manhole cover under the action of external forces such as extreme weather, and effectively ensure the safety of airport operation.

[0014] 2. A manhole cover sealing ring is provided at the connection between the manhole cover and the well body, and the manhole cover sealing ring is used to prevent rainwater from entering the locking mechanism.

[0015] 3. The locking pin main shaft is an internal structure, which ensures that it will not be frozen due to rain and snow weather.

[0016] 4. A sealing ring is provided at the connection between the main shaft and the manhole cover. This sealing ring is used to better isolate the gap between the manhole cover and the main shaft, play a sealing role, prevent rainwater from entering the rotating part and being frozen, and at the same time prevent external rainwater from seeping into the well body.

[0017] 5. The modified manhole cover will have an embedded design, which is lowered to the wellhead level or below to enhance the anti-slip performance.

[0018] In summary, the present utility model overcomes the deficiencies of the prior art, is reasonably designed, is provided with a locking mechanism, can prevent the manhole cover from being displaced due to extreme weather or external forces, and has high social use value and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 It is a schematic diagram of the locking structure of the present utility model;

[0022] Figure 3 It is a structural diagram of the manhole cover of the present utility model;

[0023] Figure 4Schematic diagram of the locking pin main shaft structure of the present utility model;

[0024] Figure 5 Schematic diagram of the main shaft structure of the present utility model;

[0025] Figure 6 Schematic diagram of the guiding and positioning sleeve structure of the present utility model;

[0026] Figure 7 Schematic diagram of the slide bar structure of the present utility model;

[0027] Figure 8 Schematic diagram of the connecting plate structure of the present utility model.

[0028] In the figure: 1, manhole cover; 2, manhole cover sealing ring; 5, well body; 6, special-shaped sealing ring; 9, inner cylinder; 10, bottom flange; 11, connecting pipe; 12, mounting pad; 13, mounting positioning block; 14, hexagonal rotating shaft; 16, countersunk cross-head screw; 17, round nut, 19, mounting groove; 20, locking pin main shaft; 21, guiding and positioning sleeve; 22, internal hexagonal set screw; 23, flat pin shaft; 24, guiding block; 25, slide bar; 26, connecting plate; 27, main shaft. Specific implementation manners

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0030] Embodiment 1

[0031] Referring to Figure 1-8 , an airport manhole cover with a locking structure, comprising a manhole cover 1, a well body 5 and a mounting pad 12. The well body 5 is arranged at the top of the mounting pad 12, the manhole cover 1 is arranged at the top of the well body 5, and a manhole cover sealing ring 2 is provided at the connection between the manhole cover 1 and the well body 5. A locking mechanism is arranged inside the manhole cover 1, and the manhole cover sealing ring 2 is used to prevent rainwater from entering the locking mechanism;

[0032] The locking mechanism includes an installation groove 19 formed in the side wall of the manhole cover 1. A guiding and positioning sleeve 21 is fixedly connected inside the installation groove 19. A locking pin main shaft 20 is slidably connected inside the installation groove 19. The position of the locking pin main shaft 20 close to the outer side end is slidably connected with the guiding and positioning sleeve 21. A limiting groove 51 is formed in the upper part of the inner side wall of the well body 5. The side end of the locking pin main shaft 20 is snap-fitted with the limiting groove 51. An arc groove 201 is provided on the circumferential side wall of the locking pin main shaft 20. A countersunk cross-head screw 16 is provided at the top of the manhole cover. The bottom end of the countersunk cross-head screw 16 is snap-fitted with the arc groove 201, which is used to fix the locking pin main shaft 20 at the locking or unlocking position of the manhole cover 1.

[0033] Further, a guiding block 24 is provided at the bottom end of the manhole cover 1. A slide plate strip 25 is slidably connected to the guiding block 24. The outer side end of the slide plate strip 25 is fixedly connected with the locking pin main shaft 20 through a single-slot pin 23. A main shaft 27 is rotatably connected inside the manhole cover 1. A sealing ring is provided at the connection between the main shaft 27 and the manhole cover 1. The sealing ring here is to better isolate the gap between the manhole cover 1 and the main shaft 27, play a sealing role, prevent rainwater from entering the rotating part and being frozen, and at the same time prevent external rainwater from seeping into the well body. The bottom of the main shaft 27 is eccentrically rotatably connected with a connecting plate 26. The outer side end of the connecting plate 26 is rotatably connected with the inner side end of the slide plate strip 25. At this time, when the main shaft 27 is rotated, the eccentric setting of the connecting plate 26 can drive the connecting plate 26 to rotate. At this time, it drives the slide plate strip 25 to move outward on the guiding block 24. At this time, the side end of the locking pin main shaft 20 is snap-fitted with the limiting groove 51, and the manhole cover 1 and the well body 5 are locked. Reversing the main shaft 27 can unlock it.

[0034] Further, a countersunk cross-head screw 16 is provided at the top of the manhole cover 1. A round nut 17 is provided on the countersunk cross-head screw 16. The round nut 17 is fixedly connected with the main shaft 27. Rotating the countersunk cross-head screw 16 with a hexagonal tool can drive the main shaft 27 to rotate, so as to realize the locking and unlocking of the manhole cover 1.

[0035] Further, an internal hexagonal set screw 22 is provided at the bottom end of the manhole cover 1. The top end of the internal hexagonal set screw 22 abuts against the guiding and positioning sleeve 21, which can fix the guiding and positioning sleeve 21 in the installation groove 19. Sealing rings are provided between the locking pin main shaft 20 and the guiding and positioning sleeve 21, and between the guiding and positioning sleeve 21 and the side wall of the installation groove 19, which can prevent rainwater from entering the locking mechanism.

[0036] Further, an inner cylinder 9 is provided at the top end of the installation pad 12. A connecting pipe 11 is provided on the installation pad 12. A bottom flange 10 is provided at the top end of the connecting pipe 11. A special-shaped sealing ring 6 is provided at the top of the inner cylinder 9. The bottom of the special-shaped sealing ring 6 is fixedly connected with the inner side wall of the inner cylinder 9 through bolts. The top of the special-shaped sealing ring 6 is fixedly connected with the inner side wall of the well body 5 through bolts.

[0037] Working principle: Place the manhole cover 1 on the top of the well body 5, and prevent rainwater from entering the locking mechanism through the manhole cover sealing ring 2 provided at the connection between the manhole cover 1 and the well body 5;

[0038] Rotating the countersunk cross-head screw 16 with a hexagonal tool can drive the rotation of the main shaft 27. The eccentric setting of the connecting plate 26 can drive the rotation of the connecting plate 26. At this time, the slide bar 25 is driven to move outward on the guide block 24. At this time, the side end of the locking pin main shaft 20 is engaged with the limiting groove 51, and the manhole cover 1 is locked with the well body 5, which can prevent the risk of displacement of the manhole cover 1 under the action of external forces such as extreme weather, and effectively ensure the safety of airport operation.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is 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 should not be construed as a limitation to the present invention.

[0040] In the present invention, unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. It can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0041] The control mode of the present invention is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming of those skilled in the art. The provision of power also belongs to the common knowledge in the art. And the present invention is mainly used to protect mechanical devices, so the control mode and circuit connection of the present invention will not be explained in detail.

[0042] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes an equivalent substitution or change, and should be covered by the protection scope of the present invention.

Claims

1. An airport manhole cover with a locking structure, comprising a manhole cover (1), a manhole body (5) and a mounting pad (12), characterized in that: The well body (5) is arranged at the top of the installation pad (12), the well cover (1) is arranged at the top of the well body (5), and a well cover sealing ring (2) is provided at the connection between the well cover (1) and the well body (5). A locking mechanism is arranged inside the well cover (1). The locking mechanism includes an installation groove (19) opened on the side wall of the well cover (1). A guiding and positioning sleeve (21) is fixedly connected inside the installation groove (19). A locking pin main shaft (20) is slidably connected inside the installation groove (19). The position of the locking pin main shaft (20) close to the outer side end is slidably connected with the guiding and positioning sleeve (21). A limiting groove (51) is opened on the upper part of the inner side wall of the well body (5), and the side end of the locking pin main shaft (20) is snap-fitted with the limiting groove (51).

2. The airport manhole cover with a locking structure according to claim 1, wherein: An arc groove (201) is provided on the circumferential side wall of the locking pin main shaft (20). A countersunk cross-head screw (16) is provided at the top of the well cover. The bottom end of the countersunk cross-head screw (16) is snap-fitted with the arc groove (201).

3. The airport manhole cover with a locking structure according to claim 1, characterized in that: A guiding block (24) is provided at the bottom end of the well cover (1). A slide plate strip (25) is slidably connected to the guiding block (24). The outer side end of the slide plate strip (25) is fixedly connected with the locking pin main shaft (20) through a slotted pin (23). A main shaft (27) is rotatably connected inside the well cover (1). The bottom of the main shaft (27) is eccentrically rotatably connected with a connecting plate (26). The outer side end of the connecting plate (26) is rotatably connected with the inner side end of the slide plate strip (25).

4. The airport manhole cover with a locking structure according to claim 3, characterized in that: A countersunk cross-head screw (16) is provided at the top of the well cover (1). A round nut (17) is provided on the countersunk cross-head screw (16), and the round nut (17) is fixedly connected with the main shaft (27).

5. The airport manhole cover with a locking structure according to claim 4, characterized in that: An internal hexagonal set screw (22) is provided at the bottom end of the well cover (1), and the top end of the internal hexagonal set screw (22) abuts against the guiding and positioning sleeve (21).

6. The airport manhole cover with a locking structure according to claim 1, characterized in that: An inner cylinder body (9) is provided at the top of the installation pad (12). A connecting pipe (11) is provided on the installation pad (12). A bottom flange (10) is provided at the top of the connecting pipe (11). A special-shaped sealing ring (6) is provided at the top of the inner cylinder body (9).

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