CN110482045B

CN110482045B - Manhole cover capable of being sealed quickly

Info

Publication number: CN110482045B
Application number: CN201910826452.8A
Authority: CN
Inventors: 王青春; 张明康; 曾强林
Original assignee: Yangzhou Beifang Air Compressor Co ltd
Current assignee: Yangzhou Beifang Air Compressor Co ltd
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2021-08-06
Anticipated expiration: 2039-09-03
Also published as: CN110482045A

Abstract

The invention relates to a rapid sealed manhole cover in the tank car technical field, comprising a cylindrical base connected with a tank body, wherein the edge of the opening part of the base is provided with a circular cover body capable of covering the opening part of the base; the outer edge of the opening of the base is provided with a plurality of convex blocks within the range of the other half circumference, the cover body is correspondingly provided with clamping pieces capable of hooking the convex blocks one by one, the cover body and the base are connected through a pin shaft by two supporting plates, the sealing gasket is arranged in a clamping groove on the cover body and is an inflatable elastic body, and after inflation, the sealing gasket bulges towards one side of the sealing edge and is tightly pressed on the sealing edge of the opening of the base. The tank truck cover can be quickly opened and closed, has high safety, and is suitable for various tank trucks for loading liquid, powder and particles.

Description

Manhole cover capable of being sealed quickly

Technical Field

The invention relates to an overhauling and inspection channel of a tank car, in particular to a manhole device.

Background

In the Chinese patent database, a rapid opening manhole cover is disclosed, and the application number is as follows: CN201510246468.3, application date: 20150515, respectively; publication No.: CN 104828418A; the publication date is as follows: 20150812, respectively; the device comprises a cylindrical base connected to a tank body, wherein the edge of the opening part of the base is hinged with a circular cover body capable of covering the opening part of the base, a sealing gasket is correspondingly arranged at the position of the joint surface of the cover body and the base, a plurality of claw pressing mechanisms are circumferentially distributed on the outer side of the edge of the opening part of the base, each claw pressing mechanism comprises a connecting lug, a first pin shaft, a threaded sleeve, an adjusting screw rod, a second pin shaft and a pressing claw, the connecting lugs are fixedly connected to the side surface of the base, the connecting lugs are connected with the threaded sleeve through the first pin shaft, the adjusting screw rod is in threaded connection with the threaded sleeve; when the cover body seals the opening of the base, the adjusting screw is inserted into the U-shaped opening on the periphery of the cover body, the free end of the pressing claw is attached to the surface of the cover body, and the pressing claw elastically compresses the cover body and the base. The device is reliable in locking, the pressing claw is not easy to block, and the device is suitable for various tank trucks for loading liquid, powder and particles. The disadvantages are that: the mode of pressing the claw to open is adopted, and the opening process is more complicated, and the operation is troublesome. In addition, the lid weight among the prior art is heavy, and operator intensity of labour is big, opens fast slow speed, and is consuming time hard.

In the prior art, there is also an inflatable manhole cover for a tank vehicle for road transport of powder materials, which has the following application number: CN 201820697284.8; application date: 20180511, respectively; publication No.: CN 208199428U; the publication date is as follows: 20181207, respectively; its structure contains bounding wall, lower flange, inflatable sealing strip, upper flange, upper cover arc board, hinge, hold-down mechanism and the handle of uncapping, the bounding wall lower part is with material tank vehicle's jar body welded fastening, bounding wall upper portion with lower flange lower part welded fastening, inflatable sealing strip inlays to be established in the annular groove that lower flange upper portion was seted up, the air inlet of inflatable sealing strip passes through the trachea and is connected with material tank vehicle's gas receiver, the upper flange with upper cover arc board welded fastening, the upper flange with lower flange one end is passed through the hinge and is articulated, the handle welding of uncapping with on the relative upper flange other end of hinge, the upper flange with the other both ends of lower flange are respectively through one hold-down mechanism locking connection. The disadvantages are that: the device also has the defects of complex opening process and troublesome operation.

In addition, the manhole cover in the prior art has certain potential safety hazards, and the cover body is easy to collapse and fly under the abnormal condition of high internal pressure, so that accidents are caused.

Disclosure of Invention

The invention aims to provide a manhole cover capable of being quickly sealed, so that the manhole cover can be opened, closed and sealed more conveniently and has higher safety.

The purpose of the invention is realized as follows: a kind of manhole cover sealed fast, including connecting to the cylindrical base on the tank body, the edge of mouth part of the base has round body of the cover that can cover the mouth part of the base, the position of faying face of the said cover and base is correspondent to have sealing gaskets, there are several lugs in the range of the semicircle of the external edge of mouth part of the said base, there are tenons that can insert the lug on the body of the cover one-to-one; a plurality of convex blocks are arranged on the outer edge of the opening part of the base within the range of the other half circumference, clamping parts capable of hooking the convex blocks are correspondingly arranged on the cover body one by one, supporting plates are respectively connected with the joint positions of the cover body and the base at one side of the half circumference and the other half circumference, the two supporting plates are connected through a pin shaft, and the axis of the pin shaft is parallel to the central line of the base; the lower side of the cover body is provided with a clamping groove, the sealing gasket is arranged in the clamping groove, the sealing gasket is an elastic body with a hollow air bag, and an inflating nozzle connected with the hollow air bag is arranged on the sealing gasket; the upper edge of the opening of the base is provided with a sealing edge, the sealing edge corresponds to the sealing gasket, and when the air bag is filled with pressure gas, the sealing gasket bulges towards one side of the sealing edge and tightly presses the sealing edge.

When the sealing device is used, the sealing device has two working states, one is an opening state, the sealing gasket is not inflated and is in a normal pressure state, a gap is reserved between the cover body and the base, at the moment, the cover body can be rotated to rotate along the axis of the pin shaft, the lug and the tenon, and the lug and the clamping piece are simultaneously separated, so that the cover body is rotated to be out of the orthographic projection range of the base, and the inside of the tank body can be inspected and repaired. And secondly, in a closed state, the cover body is rotated to be opposite to the upper opening position of the base, at the moment, the convex lugs are inserted into the tenons, meanwhile, the clamping pieces clamp the convex blocks, a small gap is reserved between the upper cover and the base, at the moment, the sealing gasket is inflated, and the sealing gasket is bulged and pressed on the sealing edge to realize sealing. The hinge pin is provided with a supporting cover body so as to be rotatable, and when the convex lug is inserted into the tenon and the clamping piece clamps the convex block, certain gaps are reserved between the convex lug and the tenon and between the clamping piece and the convex block, so that the cover body is allowed to slightly move along the axial direction of the hinge pin, and when the sealing gasket is inflated, the convex lug and the tenon, and the clamping piece and the convex block are contacted and stressed. As can be seen from the working process, compared with the prior art, the invention has the beneficial effects that:

1. when the lid was opened, it was the horizontal rotation, the weight of lid was supported by the round pin axle, opened the in-process, and the focus of lid does not rise, consequently, opens and covers theoretical not influenced by gravity, even heavier lid, also can easily open smoothly.

2. The cover body is convenient to open and close and seal, and can be closed and sealed by rotating and inflating; the opening can be realized through air discharge and rotation, and the opening, closing and sealing operations are very convenient and fast.

3. The sealing is even and reliable, through aerifing, can guarantee to seal up and can be even reliably sealed between the limit sealed, even local clearance has great change, because sealed the pad has sufficient elasticity, also can compensate these great deviations for the atress is even on the whole sealed face, and is sealed good.

4. Between lug and tenon, the connected mode between joint spare and the lug has guaranteed under extreme circumstances, and the lid is difficult for collapsing to take off, when jar internal pressure is too big, owing to have blockking of lug and joint spare, the lid can not collapse to take off the departure, has explosion-proof effect to a certain extent.

The invention is suitable for various tank trucks for loading liquid, powder and particles.

In a further improvement of the present invention, the gasket is retracted into the hollow air bag in an uninflated state toward the sealing edge. This scheme makes sealed the pad to hide in the lid on the whole, hangs when avoiding the switch lid and touches sealed the pad, causes wearing and tearing or bruise, and then influences final sealed effect.

In order to further enhance the sealing effect, one side of the sealing gasket, which faces the sealing edge, is provided with a local bulge. The local bulge can form a good joint surface with the sealing edge, and the sealing gasket is not easy to wear and puncture. Furthermore, the local bulge is provided with a tooth-shaped line. And a plurality of good sealing lines are formed between the tooth-shaped lines and the sealing edges more easily, so that a better sealing effect is realized.

Furthermore, the lug corresponds with the tenon and is equipped with 3, and the lug also corresponds with joint spare and is equipped with 3. The total number of the stress points can be 6 in the whole circumferential direction, the distribution is uniform and reasonable, the installation and the manufacture are easy, and the cost is low.

In order to ensure that the cover body has enough strength, the lower side of the cover body is provided with a raised reinforcing rib.

In order to further facilitate the opening and closing, a handle is arranged on the other side of the cover body opposite to the supporting plate.

Furthermore, the base is provided with an elastic positioning pin, the cover body is correspondingly provided with a positioning hole, and when the cover body rotates to the position where the cover body and the base are aligned, the elastic positioning pin can be just inserted into the positioning hole. Whether the cover body moves in place or not is determined by the positioning pin, so that the problems of poor sealing and poor cover closing can be avoided.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of the present invention.

Fig. 3 is a schematic view of the internal structure of the present invention.

Fig. 4 is a partially enlarged view of a in fig. 3.

Fig. 5 is an exploded view of the present invention.

Fig. 6 is a perspective view of the cover.

Fig. 7 is a schematic perspective view of the first base (the sealing ring is located on the upper side of the sealing edge).

Fig. 8 is a schematic view of a second three-dimensional structure of the base (the sealing ring is located on the upper side of the sealing edge).

Fig. 9 is a schematic view of the connection of the sealing ring with the sealing edge after inflation.

FIGS. 10-12 are cross-sectional views of three different configurations of gaskets.

The device comprises a base 1, a lower supporting plate 2, a pin shaft 3, an upper supporting plate 4, a cover 5, a tenon 5a, a reinforcing rib 5b, a clamping piece 6, a handle 7, a sealing gasket 8a, an air bag 8b, a recess 8c, a local protrusion 8d, a tooth-shaped line 8d, a lug 9, a sealing edge 10, an elastic positioning pin 11, an inflating nozzle 12 and a protruding block 13.

Detailed Description

As shown in the figure, the manhole cover is a quick-sealing manhole cover and comprises a cylindrical base 1 connected to a tank body, wherein a circular cover body 5 capable of covering the opening of the base is arranged on the edge of the opening of the base 1, a sealing gasket 8 is correspondingly arranged at the position of the joint surface of the cover body 5 and the

base

1, 3 lugs 9 are arranged in the semi-circumference range of the outer edge of the opening of the base 1, and tenons 5a capable of being inserted into the lugs 9 are correspondingly arranged on the cover body 5 one by one; the outer edge of the opening of the base 1 is provided with 3 convex blocks 13 within the range of the other half circumference, the cover body 5 is correspondingly provided with clamping pieces 6 capable of hooking the convex blocks 13 one by one, the convex blocks 13 are welded on the base, the clamping pieces 6 are L-shaped, one sides of the cover body 5 and the base 1, which are positioned at the connection positions of the half circumference and the other half circumference, are respectively connected with a supporting plate, wherein a lower supporting plate 2 is connected on the base, an upper supporting plate 4 is connected on the cover body, the lower supporting plate 2 and the upper supporting plate 4 are connected through a pin shaft 3, and the axis of the pin shaft 3 is parallel to the central line of the base 1, so that the cover body 5 can rotate and move out in the horizontal plane; a clamping groove is formed in the lower side of the cover body 5, the sealing gasket 8 is installed in the clamping groove, the sealing gasket 8 is an elastic body with a hollow air bag 8a, and an inflating nozzle 12 connected with the air bag 8a is arranged on the sealing gasket 8; the upper edge of the mouth part of the base 1 is provided with a sealing edge 10, the sealing edge 10 corresponds to the sealing gasket 8, and when the middle air bag 8a is filled with pressure gas, the sealing gasket 8 bulges towards one side of the sealing edge 10 and presses the sealing edge 10 tightly.

The gasket 8 is retracted into the hollow bladder 8a in an uninflated state toward the sealing edge 10. The gasket can have a number of different configurations, for example, as shown in fig. 4, the gasket 8 is shrunk towards the sealing edge 10 to form a recess 8 b. As shown in fig. 10, 11 and 12, the sealing gasket 8 may be provided with a local protrusion 8c on a side facing the sealing edge 10, the local protrusion is wholly located in the recess 8b, and the local protrusion 8c may be further provided with a tooth line 8 d.

The lower side of the cover body 5 is provided with a raised reinforcing rib 5 b. The other side of the cover body 5 opposite to the supporting plate is provided with a handle 7. The base 1 is provided with an elastic positioning pin 11, the cover body 5 is correspondingly provided with a positioning hole, and when the cover body 5 rotates to the position where the cover body 5 is aligned with the base 1, the elastic positioning pin 11 can be just inserted into the positioning hole.

When the device is used, the device has two working states, wherein one working state is an opening state, the sealing gasket 8 is not inflated and is in a normal pressure state, a gap is reserved between the cover body 5 and the base 1, at the moment, the cover body 5 can be rotated to enable the cover body to rotate along the axis of the pin shaft 3, the lug 9 and the tenon 5a and the lug 13 and the clamping piece 6 are simultaneously separated, so that the cover body 5 is rotated to move out of the orthographic projection range of the base 1, and the inside of the tank body can be checked and repaired. And secondly, in a closed state, the cover body 5 is rotated to be opposite to the upper opening position of the base 1, at the moment, the convex lugs 9 are inserted into the tenons 5a, meanwhile, the clamping pieces 6 clamp the convex blocks 13, a small gap is reserved between the upper cover and the base 1, at the moment, the sealing gasket 8 is inflated, and the sealing gasket 8 is bulged and pressed on the sealing edge 10 to realize sealing. The pin shaft 3 is provided with a supporting cover body 5 so that the supporting cover body can rotate, when the lugs 9 are inserted into the tenons 5a and the clamping pieces 6 clamp the convex blocks 13, certain gaps are reserved between the lugs 9 and the tenons 5a and between the clamping pieces 6 and the convex blocks 13, and therefore the cover body 5 is allowed to slightly move in the axial direction of the pin shaft 3, so that when the sealing gasket 8 is inflated, the lugs 9 and the tenons 5a are in contact with each other and the clamping pieces 6 and the convex blocks 13 are stressed. The device has the advantages that:

1. when the lid 5 was opened, it was the horizontal rotation, the weight of lid 5 was supported by round pin axle 3, opened the in-process, and the focus of lid 5 does not rise, consequently, opened the lid and does not receive the influence of gravity, even heavier lid, also can easily open smoothly.

2. The cover body 5 is convenient to open and close and seal, and can be closed and sealed by rotating and inflating; the opening can be realized through air discharge and rotation, and the opening, closing and sealing operations are very convenient and fast.

3. The sealing is even and reliable, the air bag 5a is inflated, the sealing between the sealing gasket 8 and the sealing edge 10 can be ensured to be even and reliable, and even if the local gap has larger change, the sealing gasket 8 has enough elasticity and can also compensate the larger deviation, so that the stress on the whole sealing surface is even, and the sealing is good.

4. Between lug 9 and tenon 5a, the connected mode between joint spare 6 and the lug 13 has guaranteed under extreme circumstances, and lid 5 is difficult for collapsing to take off, and when jar internal pressure was too big, owing to have the blockking of lug 9 and joint spare 6, lid 5 can not collapse to take off the departure, has explosion-proof effect to a certain extent.

It is suitable for various tank trucks for loading liquid, powder and particles.

The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.

Claims

1. The utility model provides a manhole cover of quick seal, is including connecting the cylinder base on the jar body, and the oral area edge of base is equipped with the circular lid that can cover the base oral area, the lid corresponds with the faying face position of base and is equipped with sealed pad, its characterized in that: a plurality of lugs are arranged in the range of the semi-circumference of the outer edge of the opening part of the base, and tenons capable of being inserted into the lugs are correspondingly arranged on the cover body one by one; a plurality of convex blocks are arranged on the outer edge of the opening part of the base within the range of the other half circumference, clamping pieces capable of hooking the convex blocks are correspondingly arranged on the cover body one by one, supporting plates are respectively connected with one sides of the cover body and the base at the joint positions of the half circumference and the other half circumference, the supporting plates are connected through pin shafts, and the axes of the pin shafts are parallel to the central line of the base; the lower side of the cover body is provided with a clamping groove, the sealing gasket is arranged in the clamping groove, the sealing gasket is an elastic body with a hollow air bag, and an inflating nozzle connected with the hollow air bag is arranged on the sealing gasket; the upper edge of the opening part of the base is provided with a sealing edge, the sealing edge corresponds to the sealing gasket, and when the middle air bag is filled with pressure gas, the sealing gasket bulges towards one side of the sealing edge and tightly presses the sealing edge; one side of the sealing gasket, which faces the sealing edge, is in a state of contracting towards the inside of the hollow air bag under the non-inflated state, and one side of the sealing gasket, which faces the sealing edge, contracts to form a recess; one side of the sealing gasket, which faces the sealing edge, is provided with a local bulge; tooth-shaped lines are arranged on the local protrusions.

2. A quick-sealing manhole cover according to claim 1, wherein: the lug corresponds with the tenon and is equipped with 3, and the lug also corresponds with joint spare and is equipped with 3.

3. A quick-sealing manhole cover according to claim 1 or 2, wherein: the lower side of the cover body is provided with a raised reinforcing rib.

4. A quick-sealing manhole cover according to claim 1 or 2, wherein: and a handle is arranged on the other side of the cover body opposite to the support plate.

5. A quick-sealing manhole cover according to claim 1 or 2, wherein: the base is provided with an elastic positioning pin, the cover body is correspondingly provided with a positioning hole, and when the cover body rotates to the position where the cover body and the base are aligned, the elastic positioning pin can be just inserted into the positioning hole.