CN213415027U

CN213415027U - One-key manhole cover with double safety insurance of false opening prevention device

Info

Publication number: CN213415027U
Application number: CN202022293845.8U
Authority: CN
Inventors: 谢元春; 王伦科
Original assignee: Hubei Huate Special Equipment Co ltd
Current assignee: Hubei Huate Special Equipment Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-06-11
Anticipated expiration: 2030-10-15

Abstract

The utility model discloses a one-key manhole cover with double safety insurance of an anti-misoperation device, which comprises a coaming, a lower flange, a Y-shaped sealing ring, a spring collar, an upper cover arc reinforcing plate, a stamping upper cover, a hinge, a pressing mechanism, an anti-misoperation device, a safety pin and a cover opening handle; the bounding wall lower part links to each other with material tank vehicle's the jar body, bounding wall upper portion links to each other with lower flange, the spring snap ring inlays to be established in Y shape sealing washer, Y shape sealing washer inlays to be established in punching press upper cover, upper cover circular arc reinforcing plate and the handle of uncapping respectively with punching press upper cover welded forming, the punching press upper cover is passed through the hinge with lower flange one end and is articulated, the other end passes through hold-down mechanism locking connection, the safety pin links to each other with hold-down mechanism, be used for preventing that hold-down mechanism during operation from droing, prevent that the mistake opening device sets up in bounding wall and punching press upper cover one side, be used for preventing that the manhole. The utility model has the advantages of convenient operation, safety and reliability, light weight, environmental protection and low leakage accident rate.

Description

One-key manhole cover with double safety insurance of false opening prevention device

Technical Field

The utility model relates to a manhole cover, specific saying so relates to a key formula manhole cover with prevent mistake opening device double safety insurance.

Background

At present, traditional manhole cover has interior knot formula and outer knot formula, and the sealing strip adopts ordinary solid rubber to form, and elasticity is very poor, and the flange has slight deformation in welding process, just leads to gas leakage phenomenon, influences the unloading, leads to normally unloading when the plot is serious, has the potential safety hazard, and the switch is more complicated, and the bearing pressure does not guarantee, and the product design is very heavy, does not play the guard action to the personal safety after the user maloperation, has increased the whole weight of vehicle, can not respond to national policy, lightweight and energy saving and emission reduction.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a one-key manhole cover with double safety insurance of an anti-misoperation device, which is used for solving the problems in the background technology,

in order to achieve the purpose, the utility model adopts the following technical scheme:

a one-key manhole cover with double safety insurance of an anti-false opening device comprises a coaming, a lower flange, a Y-shaped sealing ring, a spring collar, an upper cover arc reinforcing plate and a stamping upper cover, wherein the lower flange is welded and fixed at the upper part of the coaming, the lower part of the coaming is welded and fixed on a tank body of a material tank type vehicle, the Y-shaped sealing ring is embedded in the stamping upper cover and is tightly connected with the stamping upper cover through the spring collar, and the upper cover arc reinforcing plate is welded and fixed at the bottom of the stamping upper cover and is positioned at the inner side of the Y-shaped sealing ring; still include and prevent mistake opening device, prevent mistake opening device includes support, safety hook (12b), safety hook, spring, round pin axle and round pin axle end cover, the support welds admittedly on the lateral wall of bounding wall, safety hook welds admittedly on the lateral wall of punching press upper cover, safety hook one end articulates through the round pin axle on the support, the other end correspond with safety hook looks buckle cooperation, the spring wear to overlap in sell epaxially, and spring one end and safety hook looks butt, the other end and safety hook looks butt, round pin axle end cover wear to overlap in the tail end of round pin axle for fasten the round pin axle on the support.

In the technical scheme, the top of the lower flange is provided with an outer inclined surface which is inclined towards the outside of the lower flange and has an inclination angle alpha, and the lower flange is in sealing contact with the lower part of the Y-shaped sealing ring through the outer inclined surface arranged at the top of the lower flange; wherein α is 7 °.

Among the above-mentioned technical scheme, still include hinge, hold-down mechanism and the handle of uncapping, the hinge sets up punching press upper cover and bounding wall one side, be used for with punching press upper cover and bounding wall are articulated mutually together, hold-down mechanism sets up punching press upper cover and bounding wall opposite side are used for with punching press upper cover and bounding wall looks lock joint are in the same place, the handle of uncapping sets up one side that punching press upper cover is close to hold-down mechanism is used for manual opening or closing punching press upper cover.

In the technical scheme, the safety pin mechanism further comprises a safety pin and a safety pin chain, one end of the safety pin chain is connected with the pressing mechanism, the other end of the safety pin chain is connected with the safety pin, and the safety pin is inserted into the pressing mechanism and plays a role in further locking the pressing mechanism.

In the above technical solution, the pressing mechanism includes a rotating shaft, a pressing handle, two clamping blocks and two clamping seats, the pressing handle is fixed in the middle of the rotating shaft, the two clamping seats are respectively disposed at two ends of the rotating shaft and respectively fixed on the surrounding plate, the two clamping blocks are respectively disposed at two ends of the rotating shaft and respectively fixed on the pressing upper cover, each clamping block is correspondingly located inside one clamping seat, one end of each clamping block is fixedly connected with the pressing upper cover, and the other end of each clamping block is correspondingly clamped with one end of the rotating shaft; one end of each clamping seat is fixedly connected with the surrounding plate, and the other end of each clamping seat is correspondingly clamped with one end of the rotating shaft.

In the technical scheme, one end of each clamping block, which is far away from the stamping upper cover, is provided with an arc opening clamping groove for clamping the rotating shaft;

one end of each clamping seat, which is far away from the surrounding plate, is provided with a cam hole for clamping the rotating shaft;

one end of each clamping block, which is far away from the stamping upper cover, or one end of each clamping seat, which is far away from the coaming, is provided with a safety pin jack for inserting the safety pin; when one end of each fixture block, which is far away from the stamping upper cover, is provided with a safety pin jack for inserting the safety pin, the safety pin is correspondingly inserted into the safety pin jack arranged in one fixture block, one end of the safety pin chain is connected with the safety pin, and the other end of the safety pin chain is connected with one fixture block corresponding to the fixture block inserted with the safety pin; when one end of each clamping seat far away from the surrounding plate is provided with a safety pin jack for inserting the safety pin, the safety pin is correspondingly inserted into the safety pin jack arranged in one of the clamping seats, one end of the safety pin chain is connected with the safety pin, and the other end of the safety pin chain is connected with the clamping seat inserted with the safety pin;

the two ends of the rotating shaft are respectively provided with an arc boss; during assembly, the rotating shaft respectively and correspondingly penetrates through the cam holes in the two clamping seats through the arc bosses arranged at the two ends and is respectively and correspondingly connected with one pressing end cover, each pressing end cover is correspondingly connected and fixed with the arc boss arranged at one end of the rotating shaft through a screw, and a spring washer is arranged between each pressing end cover and the screw.

In the technical scheme, a safety pin locking ring for inserting the safety pin is further arranged on the outer side of each clamping seat; when the safety pin chain is used, the safety pin is correspondingly inserted into a safety pin lock ring arranged on the outer side of one of the clamping seats, one end of the safety pin chain is connected with the safety pin, and the other end of the safety pin chain is connected with the clamping seat into which the safety pin is inserted.

In the above technical scheme, the cam hole includes a straight hole section and an arc hole section, the straight hole section is used for sliding fit with the arc boss of the rotating shaft, and the arc hole section is used for rotating fit with the arc boss of the rotating shaft.

Among the above-mentioned technical scheme, hinge quantity is two, and every hinge all contains one and goes up hinge seat, one lower hinge seat, a T type round pin axle, a gasket and a split pin, it fixes to go up the hinge seat cover on the punching press, lower hinge seat is fixed on the bounding wall, go up between hinge seat and the lower hinge seat through T type round pin axle articulates together, the head of T type round pin axle with go up the hinge seat and laminate mutually, the afterbody passes hinge seat, lower hinge seat and gasket in proper order and stretches to establish in the outside T type round pin axle dew is established and is established one on the tail end of outside insert and establish one the split pin.

In the technical scheme, the Y-shaped sealing ring is made of ethylene propylene diene monomer and is embedded in an annular anti-falling groove formed in the lower portion of the stamping upper cover; the coaming, the lower flange, the spring retainer ring, the upper cover arc reinforcing plate, the stamping upper cover, the hinge, the pressing mechanism and the cover opening handle are all made of light high-strength Q235 carbon steel materials; and when the upper stamping cover is in a compressed state, the maximum pressure borne by the upper stamping cover is 0.4 MPa.

The utility model provides a pair of one-key manhole cover with prevent two safety insurance of mistake opening device, its theory of operation as follows:

before use, a one-key manhole cover with a double-safety device of an anti-misoperation device is firstly installed at the top of a powder material transportation tank vehicle on a road, then a stamping upper cover is closed, a pressing mechanism is pressed, and a safety hook of the anti-misoperation device is matched with a safety hook buckle to form self-locking;

when the sealing structure is used, when the pressure in the tank slowly rises, the Y-shaped sealing ring positioned on the side surface of the stamping upper cover can expand towards the flanges at two sides under the influence of air pressure so as to fill up a connecting sealing gap between the stamping upper cover and the lower flange in the manhole cover, and further form a fully-closed type seal, so that the problem of air leakage caused by the fact that the traditional solid rubber sealing strip cannot effectively seal due to poor elasticity when the flanges deform is effectively solved;

during transportation and unloading, the Y-shaped sealing ring can enable the manhole cover to be always in a sealing state under the action of the pressing mechanism;

wherein, at the in-process of feeding, because the spring rand assembles earlier in Y shape sealing washer, then in the repacking is to the punching press upper cover, so this Y shape sealing washer can not drop, also can not damage:

the anti-misoperation device adopts the safety hook and the safety hook buckle to be matched to form self locking, so that the problem of casualties caused by the fact that a user falls from the top of the tank because the manhole cover is opened by pressure in the tank during operation can be effectively prevented.

Compared with the prior art, the utility model has the advantages that: (1) the sealing structure combining the Y-shaped sealing ring and the spring retainer ring is adopted, so that the strength of two sides of the Y-shaped sealing ring is enhanced, the deformed position of the flange can be automatically filled, the air leakage problem caused by the deformed and untight sealing of the flange can be effectively solved, the phenomenon that the manhole cover cannot be normally unloaded due to air leakage is reduced, and the phenomenon that a sealing strip falls off due to uncovering is also overcome; (2) the design of the anti-misoperation device with the safety hook matched with the safety hook buckle effectively solves the problem that the user falls from the top of the tank to cause personal casualty due to misoperation of the user; (3) convenient operation, safety and reliability, environmental protection, low leakage accident rate and the like.

Drawings

Fig. 1 is a top view of a first embodiment of the present invention;

fig. 2 is a front view of a first embodiment of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 1;

FIG. 4 is an enlarged view of the M node in FIG. 3;

FIG. 5 is a partial schematic view of FIG. 4;

FIG. 6 is a schematic view of the anti-tamper device attached to the manhole cover;

FIG. 7 is an exploded view of the anti-tamper device;

fig. 8 is a perspective exploded view of the first embodiment of the present invention;

fig. 9 is a diagram of a specific application example of the present invention based on the first embodiment;

fig. 10 is a top view of a second embodiment of the present invention;

fig. 11 is a front view of a third embodiment of the present invention;

description of reference numerals: 1. enclosing plates; 2. a lower flange; 2a, an outer inclined plane; 3. a Y-shaped seal ring; 4. a spring collar; 5. an upper cover circular arc reinforcing plate; 6. punching an upper cover; 7. a hinge; 7a, an upper hinge seat; 7b, a lower hinge base; 7c, a T-shaped pin shaft; 7d, a gasket; 7e, a cotter pin; 8. a hold-down mechanism; 8a, a rotating shaft; 8a-1, a circular arc boss; 8b, pressing a handle; 8c, a fixture block; 8d, a clamping seat; 8e, an arc opening clamping groove; 8f, cam holes; 8f-1, straight hole section; 8f-2, a circular arc hole section; 8g, pressing the end cover; 8h, screwing; 8i, a spring washer; 8j, a safety pin jack; 8k, a safety pin lock ring; 9. a shear pin; 10. a shear pin chain; 11. a cover opening handle; 12. a false opening prevention device; 12a, a bracket; 12b, a safety hook; 12c, a safety hook; 12d, a spring; 12e, a pin shaft; 12f, pin shaft end covers; 13. and (5) a tank body.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand and understand, how to implement the present invention is further explained below with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 to 8, in order to provide an embodiment of the present invention, a one-touch manhole cover with double safety protection of the false opening prevention device is provided: in this embodiment, the one-key manhole cover specifically includes a surrounding plate 1, a lower flange 2, a Y-shaped sealing ring 3, a spring collar 4, an upper cover arc reinforcing plate 5, a stamping upper cover 6, two hinges 7, a pressing mechanism 8, a safety pin 9, a safety pin chain 10, an uncovering handle 11 and an anti-false opening device 12; wherein, the lower flange 2 is welded and fixed on the upper part of the coaming 1; the Y-shaped sealing ring 3 is embedded in the stamping upper cover 6 and is tightly connected with the stamping upper cover 6 through a spring retainer ring 4; the upper cover arc reinforcing plate 5 is welded at the bottom of the stamping upper cover 6 and is positioned at the inner side of the Y-shaped sealing ring 3; the two hinges 7 are arranged on one sides of the upper stamping cover 6 and the coaming 1 and are used for hinging the upper stamping cover 6 and the coaming 1 together; the pressing mechanism 8 is arranged on the other side of the punching upper cover 6 and the coaming 1 and is used for buckling the punching upper cover 6 and the coaming 1 together; the cover opening handle 11 is arranged on one side of the stamping upper cover 6 close to the pressing mechanism 8 and used for manually opening or closing the stamping upper cover 6; one end of a safety pin chain 10 is connected with the pressing mechanism 8, the other end of the safety pin chain is connected with the safety pin 9, and the safety pin chain 10 is used for fastening the safety pin 9 to prevent the safety pin from falling off; the safety pin 9 is inserted into the pressing mechanism 8 and plays a role in further locking the pressing mechanism 8, so that the manhole cover is prevented from being opened due to wrong operation; the anti-misoperation device 12 is arranged on one side of the stamping upper cover 6 and the coaming 1 and is used for preventing casualties caused by that a user pushes down the top of the tank to fall due to the fact that the pressure in the tank opens the manhole cover when the user operates the tank.

Specifically, in the present embodiment, referring to fig. 4 and 5, an outer inclined surface 2a inclined to the outside of the lower flange 2 by an angle α is provided at the top of the lower flange 2; when the device is used, the lower flange 2 is in sealing contact with the lower part of the Y-shaped sealing ring 3 through the outer inclined plane 2a arranged at the top of the lower flange and is used for preventing the Y-shaped sealing ring 3 from flanging and air leakage caused by the pressing deformation of the pressing upper cover 6; wherein α is 7 °.

Specifically, in the present embodiment, referring to fig. 6 to 8, the anti-false opening device 12 includes a bracket 12a, a safety hook 12b, a safety hook 12c, a spring 12d, a pin 12e, and a pin end cover 12 f; wherein, the support 12a is welded on the outer side wall of the enclosing plate 1, the safety hook 12b is welded on the outer side wall of the stamping upper cover 6, one end of the safety hook 12c is hinged on the support 12a through a pin shaft 12e, the other end is correspondingly matched with the safety hook 12b in a buckling way, the spring 12d is sleeved on the pin shaft 12e in a penetrating way, one end of the spring 12d is abutted against the safety hook 12b, the other end is abutted against the safety hook 12c, the pin shaft end cover 12f is sleeved on the tail end of the pin shaft 12e in a penetrating way, and is used for fastening the pin shaft 12e on the support 12a

Specifically, in the present embodiment, referring to fig. 1 and 8, each hinge 7 includes an upper hinge seat 7a, a lower hinge seat 7b, a T-shaped pin 7c, a spacer 7d, and a cotter pin 7 e; the upper hinge seat 7a is fixed on the punching upper cover 6, the lower hinge seat 7b is fixed on the enclosing plate 1, the upper hinge seat 7a and the lower hinge seat 7b are hinged together through a T-shaped pin shaft 7c, the head of the T-shaped pin shaft 7c is attached to the upper hinge seat 7a, the tail of the T-shaped pin shaft sequentially penetrates through the upper hinge seat 7a, the lower hinge seat 7b and a gasket 7d and extends to the outside, and a split pin 7e is inserted into the tail end of the T-shaped pin shaft 7c exposed to the outside.

Specifically, in the present embodiment, referring to fig. 1 and 8, the pressing mechanism 8 includes a rotating shaft 8a, a pressing handle 8b, two clamping blocks 8c and two clamping seats 8 d; wherein, the pressing handle 8b is fixed in the middle of the rotating shaft 8 a; the two clamping seats 8d are respectively arranged at two ends of the rotating shaft 8a and are respectively fixed on the enclosing plate 1; the two clamping blocks 8c are respectively arranged at two ends of the rotating shaft 8a and are respectively fixed on the punching upper cover 6; each fixture block 8c is correspondingly positioned at the inner side of one fixture seat 8d, one end of each fixture block 8c is fixedly connected with the stamping upper cover 6, and the other end of each fixture block 8c is correspondingly clamped with one end of the rotating shaft 8 a; one end of each clamping seat 8d is fixedly connected with the surrounding plate 1, and the other end of each clamping seat is correspondingly clamped with one end of the rotating shaft 8 a.

Specifically, in the present embodiment, referring to fig. 7, an arc-opening slot 8e for engaging with the rotating shaft 8a is formed at one end of each latch 8c away from the upper stamping cover 6; one end of each clamping seat 8d, which is far away from the surrounding plate 1, is provided with a cam hole 8f for clamping the rotating shaft 8 a; one end of each clamping block 8c, which is far away from the stamping upper cover 6, is provided with a safety pin jack 8j for inserting a safety pin 9; two ends of the rotating shaft 8a are respectively provided with an arc boss 8 a-1; during assembly, the rotating shaft 8a correspondingly penetrates through the cam holes 8f on the two clamping seats 8d through the arc bosses 8a-1 arranged at the two ends respectively and is correspondingly connected with one pressing end cover 8g respectively, each pressing end cover 8g is correspondingly connected and fixed with the arc boss 8a-1 arranged at one end of the rotating shaft 8a through a screw 8h, and a spring washer 8i is arranged between each pressing end cover 8g and the screw 8 h.

Specifically, in the present embodiment, referring to fig. 1, the safety pin 9 is correspondingly inserted into a safety pin insertion hole 8j formed in one of the latch blocks 8c, and the safety pin chain 10 is connected to the safety pin 9 at one end and connected to one of the latch seats 8d corresponding to the latch block 8c into which the safety pin 9 is inserted at the other end.

Specifically, in this embodiment, referring to fig. 8, the cam hole 8f includes a straight hole section 8f-1 and an arc hole section 8f-2, wherein the straight hole section 8f-1 is configured to slidably engage with the arc boss 8a-1 of the rotating shaft 8a, and the arc hole section 8f-2 is configured to rotatably engage with the arc boss 8a-1 of the rotating shaft 8 a.

Specifically, in the present embodiment, the Y-shaped seal ring 3 is made of ethylene propylene diene monomer, and is embedded in an annular anti-drop groove 6a formed in the lower portion of the stamping upper cover 6; the Y-shaped sealing ring 3 can automatically compensate the deformation position through the self pressure when the upper stamping cover 6 and the lower flange 2 are deformed a little, thereby playing a good sealing role and further reducing the leakage problem of the manhole cover.

Specifically, in the embodiment, the coaming 1, the lower flange 2, the spring collar 4, the upper cover arc reinforcing plate 5, the stamped upper cover 6, the hinge 7, the pressing mechanism 8 and the cover opening handle 11 are all made of light high-strength metal materials; preferably a light weight high strength Q235 carbon steel material.

Specifically, in this embodiment, the upper stamping cover 6 and the upper cover arc reinforcing plate 5 are formed by welding, so that the strength of the upper cover is increased, the appearance is attractive, and the phenomenon of water accumulation on the manhole cover during raining is effectively avoided.

Specifically, in the present embodiment, when the upper stamping cover 6 is in the compressed state, the maximum pressure applied to the upper stamping cover 6 is 0.4 MPa; when the pressure exceeds 0.4MPa, the upper cover 6 deforms and exhausts air.

Referring to fig. 9, when in use, the manhole cover is welded with a tank body 13 of a material tank vehicle through the lower part of a surrounding plate 1, then the stamping upper cover 6 is closed, a pressing mechanism 8 is pressed and a safety pin 9 is inserted, at the moment, a connection gap between the lower flange 2 and the stamping upper cover 6 is filled up through the pressure of the pressing mechanism 8 by the Y-shaped sealing ring 3, and a fully-closed seal is formed, so that the problem of air leakage caused by the fact that the lower flange 2 cannot be effectively sealed due to poor elasticity when the lower flange 2 deforms is effectively solved;

when the cover is required to be opened for loading operation, the pressing handle 8b of the pressing mechanism 8 is moved upwards to drive the rotating shaft 8a to rotate upwards by 90 degrees, the circular arc bosses 8a-1 at the two ends of the rotating shaft 8a are turned downwards by 90 degrees in the circular arc hole sections 8f-2 of the cam holes 8f in the two clamping seats 8d to be parallel to the straight strip hole sections 8f-1 of the cam holes 8f, then the safety pin 9 inserted in one clamping block 8c is pulled out, then the pressing handle 8b of the pressing mechanism 8 is pulled outwards (i.e. in the direction away from the upper cover), the pressing handle 8b pulls the circular arc bosses 8a-1 at the two ends of the rotating shaft 8a to slide into the straight strip hole sections 8f-1 from the circular arc hole sections 8f-2 of the cam holes 8f, and slides outwards along the straight strip hole sections 8f-1 until the end of the straight strip hole sections 8f-1 is reached, the rotating shaft 8a is separated from the arc opening clamping groove 8e of the clamping block 8c and slides into the straight hole section 8f-1 of the clamping seat 8d, the pressing mechanism 8 loses the pressing effect on the upper cover 6, and finally the upper cover 6 is opened by moving the cover opening handle 11 upwards, so that the material is loaded into the road material tank vehicle tank body 13 from the manhole cover;

after the charging is finished, the upper punch upper cover 6 is closed again, the pressing mechanism 8 is pressed, and the operation process of closing the cover is opposite to that of opening the cover, and the method specifically comprises the following steps: the cover opening handle 11 is moved downwards to close the stamping upper cover 6, then the pressing handle 8b of the pressing mechanism 8 is pushed backwards (namely towards the direction close to the stamping upper cover), the arc bosses 8a-1 at the two ends of the rotating shaft 8a slide into the arc hole sections 8f-2 of the cam holes 8f in the two clamping seats 8d from the straight hole sections 8f-1 of the cam holes 8f, then the pressing handle 8b of the pressing mechanism 8 is moved downwards to drive the rotating shaft 8a to rotate 90 degrees downwards, the arc bosses 8a-1 at the two ends of the rotating shaft 8a turn upwards by 90 degrees in the arc hole sections 8f-2 of the cam holes 8f in the two clamping seats 8d, so that the arc bosses 8a-1 at the two ends of the rotating shaft 8a are vertical to the straight hole sections 8f-1 of the two cam holes 8f, and the pressing handle 8b of the pressing mechanism 8 is just buckled on the stamping upper cover 6, the arc bosses 8a-1 at the two ends of the rotating shaft 8a also just slide into the arc opening clamping grooves 8e of the two clamping blocks 8c, and finally the safety pin 9 is inserted into one of the clamping blocks 8c, so that the cover closing operation is completed.

Fig. 10 and 11 show two further embodiments of the one-touch manhole cover with double safety protection against false opening, which differ from the first embodiment in the position in which the safety pin 9 is inserted; in the embodiment shown in fig. 10, the safety pin 9 is inserted into one of the cartridges 8 d; in the embodiment shown in fig. 11, the safety pin 9 is inserted outside the clamping seat 8 d;

specifically, in the embodiment shown in fig. 10, a safety pin insertion hole 8j for inserting a safety pin 9 is formed at one end of each clamping seat 8d away from the surrounding plate 1; when the safety pin chain is used, the safety pin 9 is correspondingly inserted into a safety pin insertion hole 8j formed in one of the clamping seats 8d, one end of the safety pin chain 10 is connected with the safety pin 9, and the other end of the safety pin chain is connected with the clamping seat 8d into which the safety pin 9 is inserted.

Specifically, in the embodiment shown in fig. 11, a safety pin lock ring 8k for inserting the safety pin 9 is welded on the outer side of each clamping seat 8 d; when the safety pin chain is used, the safety pin 9 is correspondingly inserted into a safety pin lock ring 8k arranged on the outer side of one of the clamping seats 8d, one end of the safety pin chain 10 is connected with the safety pin 9, and the other end of the safety pin chain is connected with the clamping seat 8d with the safety pin 9 inserted outside.

Finally, the above description is only the embodiments of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A one-key manhole cover with double safety insurance of an anti-false opening device comprises a coaming (1), a lower flange (2), a Y-shaped sealing ring (3), a spring collar (4), an upper cover arc reinforcing plate (5) and a stamping upper cover (6), wherein the lower flange (2) is welded on the upper part of the coaming (1), the lower part of the coaming (1) is welded on a tank body (13) of a material tank vehicle, the Y-shaped sealing ring (3) is embedded in the stamping upper cover (6) and is in pressing connection with the stamping upper cover (6) through the spring collar (4), and the upper cover arc reinforcing plate (5) is welded on the bottom of the stamping upper cover (6) and is positioned on the inner side of the Y-shaped sealing ring (3); the method is characterized in that: the anti-misoperation device (12) comprises a support (12a), a safety hook (12b), a safety hook (12c), a spring (12d), a pin shaft (12e) and a pin shaft end cover (12f), the support (12a) is fixedly welded on the outer side wall of the enclosing plate (1), the safety hook (12b) is fixedly welded on the outer side wall of the stamping upper cover (6), one end of the safety hook (12c) is hinged on the support (12a) through the pin shaft (12e), the other end of the safety hook (12c) is correspondingly matched with the safety hook (12b) in a clamping and buckling manner, the spring (12d) is sleeved on the pin shaft (12e) in a penetrating manner, one end of the spring (12d) is abutted against the safety hook (12b), the other end of the spring is abutted against the safety hook (12c), and the pin shaft end cover (12f) is sleeved on the tail end of the pin shaft (12e), for fastening the pin (12e) to the bracket (12 a).

2. The one-touch manhole cover with dual safety feature of anti-tamper device according to claim 1, wherein: an outer inclined surface (2a) which is inclined towards the outside of the lower flange (2) and has an inclination angle alpha is arranged at the top of the lower flange (2), and the lower flange (2) is in sealing contact with the lower part of the Y-shaped sealing ring (3) through the outer inclined surface (2a) arranged at the top of the lower flange; wherein α is 7 °.

3. A one-touch manhole cover with dual safety features for preventing false opening as claimed in claim 1 or 2, wherein: still include hinge (7), hold-down mechanism (8) and handle (11) of uncapping, hinge (7) set up punching press upper cover (6) and bounding wall (1) one side, be used for with punching press upper cover (6) and bounding wall (1) articulate mutually together, hold-down mechanism (8) set up punching press upper cover (6) and bounding wall (1) opposite side, be used for with punching press upper cover (6) and bounding wall (1) are in the same place of buckling mutually, handle (11) of uncapping set up one side that punching press upper cover (6) are close to hold-down mechanism (8) is used for manual opening or closing punching press upper cover (6).

4. A one-touch manhole cover with dual safety features for preventing false opening of claim 3, wherein: still include safety pin (9) and safety pin chain (10), safety pin chain (10) one end is connected with hold-down mechanism (8), the other end with safety pin (9) are connected, safety pin (9) are used for inserting and establish in hold-down mechanism (8), play further locking hold-down mechanism (8)'s effect.

5. The one-touch manhole cover with dual safety feature of anti-false opening device of claim 4, wherein: the pressing mechanism (8) comprises a rotating shaft (8a), a pressing handle (8b), two clamping blocks (8c) and two clamping seats (8d), the pressing handle (8b) is fixed in the middle of the rotating shaft (8a), the two clamping seats (8d) are respectively arranged at two ends of the rotating shaft (8a) and are respectively fixed on the enclosing plate (1), the two clamping blocks (8c) are respectively arranged at two ends of the rotating shaft (8a) and are respectively fixed on the punching upper cover (6), each clamping block (8c) is correspondingly positioned on the inner side of one clamping seat (8d), one end of each clamping block (8c) is fixedly connected with the punching upper cover (6), and the other end of each clamping block is correspondingly clamped with one end of the rotating shaft (8 a); one end of each clamping seat (8d) is fixedly connected with the surrounding plate (1), and the other end of each clamping seat is correspondingly clamped with one end of the rotating shaft (8 a).

6. The one-touch manhole cover with dual safety feature of anti-false opening device of claim 5, wherein:

one end of each clamping block (8c) far away from the stamping upper cover (6) is provided with an arc opening clamping groove (8e) for clamping the rotating shaft (8 a);

one end of each clamping seat (8d) far away from the enclosing plate (1) is provided with a cam hole (8f) for clamping the rotating shaft (8 a);

one end of each clamping block (8c) far away from the stamping upper cover (6) or one end of each clamping seat (8d) far away from the coaming (1) is provided with a safety pin jack (8j) for inserting the safety pin (9); when one end, far away from the punching upper cover (6), of each clamping block (8c) is provided with a safety pin jack (8j) for inserting the safety pin (9), the safety pin (9) is correspondingly inserted into the safety pin jack (8j) arranged in one clamping block (8c), one end of the safety pin chain (10) is connected with the safety pin (9), and the other end of the safety pin chain is connected with one clamping seat (8d) corresponding to the clamping block (8c) inserted with the safety pin (9); when one end, far away from the coaming (1), of each clamping seat (8d) is provided with a safety pin jack (8j) for inserting the safety pin (9), the safety pin (9) is correspondingly inserted into the safety pin jack (8j) arranged in one clamping seat (8d), one end of the safety pin chain (10) is connected with the safety pin (9), and the other end of the safety pin chain is connected with the clamping seat (8d) inserted with the safety pin (9);

both ends of the rotating shaft (8a) are respectively provided with an arc boss (8 a-1); during assembly, the rotating shaft (8a) correspondingly penetrates through cam holes (8f) in two clamping seats (8d) through arc bosses (8a-1) arranged at two ends respectively and is correspondingly connected with a pressing end cover (8g), each pressing end cover (8g) is correspondingly connected and fixed with the arc boss (8a-1) arranged at one end of the rotating shaft (8a) through a screw (8h), and a spring washer (8i) is arranged between each pressing end cover (8g) and the screw (8 h).

7. The one-touch manhole cover with dual safety feature of anti-false opening device of claim 5, wherein: a safety pin locking ring (8k) for inserting the safety pin (9) is arranged on the outer side of each clamping seat (8 d); when the safety pin chain is used, the safety pin (9) is correspondingly inserted into a safety pin locking ring (8k) arranged on the outer side of one of the clamping seats (8d), one end of the safety pin chain (10) is connected with the safety pin (9), and the other end of the safety pin chain is connected with the clamping seat (8d) inserted with the safety pin (9).

8. The one-touch manhole cover with dual safety feature of anti-tamper device according to claim 6, wherein: the cam hole (8f) comprises a straight hole section (8f-1) and an arc hole section (8f-2), the straight hole section (8f-1) is used for being matched with an arc boss (8a-1) of the rotating shaft (8a) in a sliding mode, and the arc hole section (8f-2) is used for being matched with the arc boss (8a-1) of the rotating shaft (8a) in a rotating mode.

9. A one-touch manhole cover with dual safety features for preventing false opening of claim 3, wherein: the number of the hinges (7) is two, each hinge (7) comprises an upper hinge seat (7a), a lower hinge seat (7b), a T-shaped pin shaft (7c), a gasket (7d) and a cotter pin (7e), the upper hinge seat (7a) is fixed on the stamping upper cover (6), the lower hinge seat (7b) is fixed on the coaming (1), the upper hinge seat (7a) and the lower hinge seat (7b) are hinged together through the T-shaped pin shaft (7c), the head part of the T-shaped pin shaft (7c) is attached to the upper hinge seat (7a), the tail part of the T-shaped pin shaft sequentially passes through the upper hinge seat (7a), the lower hinge seat (7b) and the gasket (7d) and extends to the outside, the tail end of the T-shaped pin shaft (7c) exposed outside is inserted with the cotter pin (7 e).

10. A one-touch manhole cover with dual safety features for preventing false opening of claim 3, wherein: the Y-shaped sealing ring (3) is made of ethylene propylene diene monomer and is embedded in an annular anti-falling groove (6a) formed in the lower portion of the stamping upper cover (6); the coaming (1), the lower flange (2), the spring retainer ring (4), the upper cover arc reinforcing plate (5), the stamping upper cover (6), the hinge (7), the pressing mechanism (8) and the cover opening handle (11) are all made of light high-strength Q235 carbon steel materials; and when the upper stamping cover (6) is in a pressing state, the maximum pressure borne by the upper stamping cover (6) is 0.4 MPa.