A device for automatically opening, closing and locking a tank manhole

Abstract

The present invention discloses an automatic opening, closing, and locking device for a tank manhole, comprising a manhole seat having a manhole therein, a sliding cover provided above the seat surface of the manhole seat, a manhole cover slidably mounted on the bottom surface of the sliding cover, at least one bayonet assembly provided on the seat surface of the manhole seat, a plurality of buckles provided on the bottom surface of the sliding cover, and a two-link mechanism and a driven rocker arm rotatably connected between the manhole seat and the same side of the sliding cover. The present invention automatically opens and closes, locks, and releases the manhole cover without requiring an operator to perform dangerous and tedious operations, thereby saving the operator's working time and improving the operator's work safety.

Description

Technical Field

[0001] The invention relates to the field of tank body manholes, in particular to an automatic opening, closing and locking tank body manhole device. Background Art

[0002] The widely used manhole system on pressure tanks or tank trucks consists of a manhole cover and a manhole, which are locked and fastened together using clips and bolts. If there are more than six sets of clips and bolts, opening the manhole cover requires the operator to climb to the manhole cover, screw and release each set of bolts, and then tighten each set of bolts with the clips when closing the cover. This is a cumbersome operation and increases time costs. Some tank manholes are located at dangerous heights, which also increases the risk of operator exposure. Summary of the Invention

[0003] The invention provides an automatic opening, closing and locking tank manhole device to solve the problem of complicated opening and closing operations of the manhole device on the tank in the prior art.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the through-hole comprises a bottom of a foot stand, and the bottom of the foot stand comprises a through-hole, wherein the foot stand comprises a through-hole, and the bottom of the foot stand comprises a through-hole.

[0006] Furthermore, it also includes a driving device, which is transmission-connected to a rotating shaft at one end of the two-link mechanism.

[0007] Furthermore, a slide rail extending along the X direction is fixed to the bottom surface of the sliding cover, and the manhole seat is slidably mounted on the slide rail and is restricted to sliding only along the X direction of the slide rail.

[0008] Furthermore, a sealing ring is fixedly installed in the manhole cover.

[0009] Compared with the prior art, the present invention has the following advantages:

[0010] The automatic manhole cover of the present invention is opened and closed in a horizontal flip-up manner, which reduces the possibility of foreign matter such as snow and dust entering the tank body during the opening and closing process; the manhole cover can be automatically opened and closed, locked and released without the operator having to perform dangerous and tedious operations, saving the operator's working time and improving the safety of the operator's work. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0012] Figure 2 It is a right side sectional view of the structure of an embodiment of the present invention.

[0013] Figure 3 It is a left view of the structure of an embodiment of the present invention. Implementation Method

[0014] The present invention will be further described below with reference to the accompanying drawings and examples.

[0015] like Figure 1-Figure 3 As shown, this embodiment discloses an automatic opening, closing, and locking device for a tank manhole, comprising a manhole seat 2, a sliding cover 3, and a manhole cover 12. The manhole seat 2 has a manhole, the upper end of which is located above the top surface of the manhole seat 2, and the lower end of which is located below the bottom surface of the manhole seat 2. The sliding cover 3 is disposed above the top surface of the manhole seat 2. The top surface of the manhole seat 2 is provided with two bayonet groups, located on the left and right sides of the upper end of the manhole. Each bayonet group comprises a plurality of bayonet groups 18 arranged in the same number along a straight line. The bottom surface of the sliding cover 3 is provided with two buckle groups, located on the left and right sides of the bottom surface of the sliding cover 3. The buckle groups are located one-to-one above the buckle groups on the same side. Each buckle group comprises a plurality of buckles 19 arranged in the same number along a straight line.

[0016] A pair of support plates 14 are fixed on the bottom surface of the sliding cover 3 between the two buckle groups. The two support plates 14 are symmetrically distributed on the left and right, and each support plate 14 extends in the front-back straight direction. A non-metallic slide rail 13 extending in the front-back straight direction is fixed between the two support plates 14. A manhole cover 12 is installed on the bottom surface of the slide rail 13. The slide rail 13 can be a T-shaped rail or a dovetail rail. As a result, the manhole cover 12 is restricted from being separated from the slide rail 13 and can only slide on the slide rail 13 in the front-back straight direction. The slide rail 13 plays a role in sliding support and reducing friction.

[0017] A sealing device is provided inside the manhole cover 12 , and the sealing device is composed of a sealing ring mounting plate 16 and a sealing ring 15 . The sealing ring 15 is fixed inside the manhole cover 12 through the sealing ring mounting plate 16 .

[0018] This embodiment also includes a driving mechanism and a locking device, and the locking device includes two groups of driving rocker mechanisms and four groups of driven rocker mechanisms.

[0019] One set of driving rocker mechanisms is located on the left side of the anatomy hole seat 2 and the sliding cover 3, while the other set is located on the right side of the anatomy hole seat 2 and the sliding cover 3. The two sets of driving rocker mechanisms are bilaterally symmetrical. Each set of driving rocker mechanisms comprises a two-link structure consisting of a first rocker 4 and a second rocker 5. One end of the first rocker 4 is pivotally connected to one end of the second rocker 5 via a pin. The other end of the first rocker 4 is pivotally connected to the corresponding side (i.e., the left or right side) of the anatomy hole seat 2 via a rotating shaft 6. The first rocker 4 of both sets of driving rocker mechanisms shares the same rotating shaft 6, while the other end of the second rocker 5 is pivotally connected to the corresponding side (i.e., the left or right side) of the sliding cover 3 via a rotating shaft. In each set of driving rocker mechanisms, a V-shaped corner is formed between the first rocker 4 and the second rocker 5, with the inflection point of the V-shaped corner facing rearward.

[0020] The drive mechanism includes a reduction motor 9 and a motor base 10. The reduction motor 9 is fixed to the left side of the humanoid hole seat 2 via the motor base 10. The reduction motor 9 is connected to the rotating shaft 6 shared by the first rocker arms 4 of the two sets of driving rocker arm mechanisms via a key. The reduction motor 9 drives the rotating shaft 6 to rotate on the humanoid hole seat 2, thereby ensuring the synchronous rotation of the first rocker arms 4 of the two sets of driving rocker arm mechanisms.

[0021] Of the four sets of driven rocker mechanisms, two are located on the left side of the anthropomorphic seat 2 and sliding cover 3, while the other two are located on the right side of the anthropomorphic seat 2 and sliding cover 3. The two sets of driven rocker mechanisms on each side are distributed along the front-to-back direction, with the positions of the driven rocker mechanisms on the left and right sides corresponding to each other. Each set of driven rocker mechanisms includes a third rocker 7 as a driven rocker. Both ends of the third rocker 7 are rotationally connected to the corresponding side (i.e., the left or right side) of the anthropomorphic seat 2 and sliding cover 3 via a pin 8.

[0022] In this embodiment, a wear-resistant pad 11 is provided at the connection ring between each pin shaft and the corresponding component, and the pin shaft is fixed and prevented from falling off by a cotter pin 17.

[0023] The operation process of the automatic opening, closing and locking tank manhole device cover of this embodiment is as follows:

[0024] 1. Automatic shutdown: Figure 1As shown, the reduction motor 9 drives the rotating shaft 6 and the first rocker arm 4 in the driving rocker arm mechanism to rotate, driving the sliding cover 3 to move downward. Under the action of the driven rocker arm mechanism, the sliding cover 3 is horizontally closed at the upper end opening of the manhole, and the buckles 19 are inserted into the bayonet 18 one by one. When the sliding cover 3 completely falls on the manhole seat 2, the sliding cover 3 and the manhole cover 12 reach the vertex in direction A (horizontal rear direction). At this time, the manhole cover 12 is fitted outside the upper end opening of the manhole. At the same time, the sealing ring 15 in the manhole cover 12 is pressed against the upper end opening of the manhole, completing the automatic closing action of the manhole cover 12.

[0025] 2. Automatic Locking: After the automatic closing action is completed, the reduction motor 9 drives the rotating shaft 6 and the first rocker arm 4 in the driving rocker arm mechanism to continue rotating. At this time, the second rocker arm 5 will cause the sliding cover 3 to translate in the horizontal direction B (horizontally forward). At the same time, the buckle 19 on the sliding cover 3 will engage the end position in the direction B of the bayonet 18 of the manhole seat 2. When the buckle 19 engages, the reduction motor 9 stops rotating, completing the automatic locking action of the manhole cover 12. Because the sliding cover 3 and the manhole cover 12 can slide relative to each other, the manhole cover 12 and the manhole seat 2 remain stationary relative to each other while the sliding cover 3 translates in the horizontal direction B, and the manhole cover 12 remains in the closed state.

[0026] 3. Automatic Release: The reduction motor 9 drives the rotating shaft 6 and the first rocker 4 of the driving rocker mechanism to rotate in opposite directions. The rocker mechanism drives the sliding cover 3 to translate in the horizontal direction A. When the sliding cover 3 reaches the apex in the horizontal direction A, the buckle 18 on the sliding cover 3 disengages from the latch 19 on the manhole seat 2, completing the automatic release of the manhole cover 12. Because the sliding cover 3 and the manhole cover 12 can slide relative to each other, the manhole cover 12 and the manhole seat 2 remain stationary while the sliding cover 3 moves in the horizontal direction A, and the manhole cover 12 remains closed.

[0027] 4. Automatic opening: After the automatic unlocking action is completed, the reduction motor 9 drives the rotating shaft 6 and the first rocker arm 4 in the driving rocker arm mechanism to continue to rotate in the opposite direction, driving the sliding cover 3 to move upward; under the action of the driven rocker arm mechanism, the sliding cover 3 drives the manhole cover 12 to open horizontally in the direction B. When the sliding cover 3 is completely separated from the manhole seat 2, the reduction motor 9 stops rotating, completing the automatic opening action of the manhole cover 12.

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0029] It should be pointed out that the implementation of the present invention is not limited to the above embodiments, and other identical or similar forms also fall within the protection scope of the present invention.

Claims

1. An automatic opening, closing and locking tank manhole device, comprising a manhole seat, a manhole having a manhole in the manhole seat, the opening of the manhole being located on the seat surface of the manhole seat, and characterized in that: A sliding cover is provided above the seat surface of the manhole seat, and the manhole cover is installed on the bottom surface of the sliding cover for horizontal sliding sliding along the X direction. At least one group of bayonet groups is provided on the seat surface of the manhole seat, and the bayonet group includes multiple bayonet ports, and each bayonet port is distributed along a straight line in the X direction. The bottom surface of the sliding cover is provided with multiple buckles, and the buckles are also distributed along a straight line in the X direction, and the straight line formed by the buckles is located above the straight line formed by the bayonet ports; two connecting rod mechanisms are respectively provided between the manhole seat and the sliding cover on the same side in the Y direction, one end of the two connecting rod mechanisms is rotatably connected to the corresponding side of the manhole seat through a rotating shaft, and the other end of the two connecting rod mechanisms is rotatably connected to the corresponding side of the sliding cover; at least one group of driven rocker arms are also respectively provided between the manhole seat and the sliding cover on the same side in the Y direction, one end of the driven rocker arms is rotatably connected to the corresponding side of the manhole seat, and the other end of the driven rocker arms is rotatably connected to the corresponding side of the sliding cover.

2. The automatic opening, closing and locking tank manhole device according to claim 1, characterized in that: It also includes a driving device, which is transmission-connected to a rotating shaft at one end of the two-link mechanism.

3. The automatic opening, closing and locking tank manhole device according to claim 1, characterized in that: A slide rail extending along the X direction is fixed to the bottom surface of the slide cover, and the manhole cover is slidably mounted on the slide rail and is restricted to sliding only along the X direction of the slide rail.

4. The automatic opening, closing and locking tank manhole device according to claim 1, characterized in that: A sealing ring is fixedly installed in the manhole cover.

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