Manhole structure capable of improving working efficiency

Abstract

The invention relates to a manhole structure capable of improving working efficiency, which comprises a manhole connecting pipe and a manhole cover, the manhole connecting pipe and the manhole cover are connected through a plurality of first fixing pieces, and the manhole connecting pipe and the manhole cover are connected through a suspension arm rotating mechanism. The suspension arm rotating mechanism comprises a suspension arm, a hanging mechanism used for connecting the suspension arm with the manhole cover and a rotating mechanism used for connecting the suspension arm with the manhole connecting pipe, the suspension arm comprises a transverse section and a vertical section, and the hanging mechanism comprises a hanging frame arranged on the transverse section of the suspension arm in a sleeving mode; the lifting frame comprises a first side plate, a second side plate, an upper connecting plate and a lower connecting plate, the upper connecting plate and the lower connecting plate are arranged between the first side plate and the second side plate, a pin roller is arranged in the lifting frame, and the center of the pin roller is supported on the transverse section of the lifting arm and can roll relative to the transverse section of the lifting arm, so that relative displacement movement of the lifting frame and the transverse section of the lifting arm is achieved. And the rotating mechanism comprises a supporting barrel section and a lug plate used for connecting the supporting barrel section with the manhole connecting pipe, so that the working efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of reaction vessels, in particular to a manhole structure capable of improving work efficiency. BACKGROUND

[0002] A reaction vessel refers to a vessel used to complete the physical reaction and chemical reaction of a medium. In industrial production, especially in the chemical, pharmaceutical, chemical fertilizer, and refining industries, reaction vessels are used as a kind of pressure-bearing equipment due to the need of the process.

[0003] In order to facilitate equipment maintenance, a manhole structure is usually provided on the reaction vessel. Please refer to the prior art Chinese patent No. 202123413404.8, which discloses a manhole structure in the prior art, comprising a manhole connecting pipe (i.e. a manhole cone), a manhole cover, and a flange welded on the manhole connecting pipe. The flange and the manhole cover are connected by a plurality of fixing members. This kind of manhole structure is designed in this way because it is applied to low pressure occasions, so the thickness of the manhole connecting pipe is also designed to be relatively thin. However, in some high pressure occasions, the manhole structure cannot be designed in this way. In order to enable the manhole connecting pipe to withstand higher pressure, the wall thickness thereof is designed to be relatively thick. Please refer to Figure 1 which discloses a manhole structure suitable for high pressure occasions in the prior art. Because the manhole connecting pipe has a relatively thick wall, in order to simplify the structure, the flange is not additionally welded on the manhole connecting pipe, but the fixing member 1` is directly screwed into the manhole connecting pipe 2` to realize the fixation of the manhole cover 3` and the manhole connecting pipe 2`. The defects of this kind of structure are as follows: 1. The working strength of workers is relatively large. There are a large number of studs and nuts on one circle of the manhole cover 3`. Since the reaction vessel is a large equipment, the weight of the studs and nuts used thereon is also relatively large. The weight of a single stud is about 40 kg, and the weight of a single nut is about 8 kg. The workers need to remove all the studs and nuts to open the manhole cover 3`; 2. Since the manhole cover 3` is relatively heavy, hoisting equipment needs to be used for operation, and the operation process also poses a certain safety hazard to the life safety of the workers.

[0004] Therefore, we think about how to improve the thick-walled manhole structure in the prior art. After improvement, the workers only need to remove the relatively light nuts to open the manhole cover, and the relatively heavy studs can be retained in the manhole connecting pipe without being removed, so as to greatly improve the work efficiency of the workers and reduce the labor intensity of the workers. In addition, we think about how to connect the manhole cover and the manhole connecting pipe through a connecting structure, so that the opening and closing of the manhole cover can be separated from the hoisting equipment, thereby greatly improving the safety of operation and avoiding safety hazards. SUMMARY

[0005] To solve the above problems, the purpose of the present application is to provide a manhole structure capable of improving work efficiency.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a manhole structure that can improve work efficiency, comprising: a manhole connector and a manhole cover, wherein the manhole connector and the manhole cover are connected by a plurality of first fixing members, and the manhole connector and the manhole cover are connected by a boom rotating mechanism, wherein the boom rotating mechanism comprises: a boom, a hanging mechanism for connecting the boom and the manhole cover, and a rotating mechanism for connecting the boom and the manhole connector, wherein the boom comprises a horizontal section and a vertical section, wherein the free end of the horizontal section is provided with a first sealing plate, a first retaining ring is provided on the horizontal section, and a second retaining ring is provided on the vertical section, wherein the hanging mechanism comprises: a hanging frame sleeved on the horizontal section of the boom, wherein the hanging frame comprises a first side plate, a second side plate, and an upper connecting plate and a lower connecting plate disposed between the first side plate and the second side plate, wherein rollers are provided inside the hanging frame. One free end of the roller is installed in the first side plate, and the other free end of the roller is installed in the second side plate. The center of the roller is supported on the horizontal section of the boom and can roll relative to the horizontal section of the boom to achieve relative displacement between the lifting frame and the horizontal section of the boom. The top of the manhole cover is provided with a hook, and the hook is connected to the lower connecting plate of the lifting frame by a second fixing member. The rotating mechanism includes a support cylinder section and an ear plate for connecting the support cylinder section and the manhole pipe. The bottom of the support cylinder section is provided with a lower sealing plate, and the lower sealing plate is connected to the support cylinder section by several third fixing members. The upper part of the support cylinder section is provided with a ball groove, and several balls are provided in the ball groove. The bottom of the vertical section of the boom is housed in the support cylinder section, and the second retaining ring of the vertical section of the boom is supported on several balls.

[0007] Preferably, the manhole structure in the present invention that can improve work efficiency is further configured such that: Teflon is provided between the bottom of the vertical section of the boom and the support cylinder section.

[0008] Preferably, the manhole structure in the present invention that can improve work efficiency is further configured such that the first fixing member is a stud and a nut.

[0009] Preferably, the manhole structure in the present invention that can improve work efficiency is further configured such that the second fixing member is a hinge bolt and a nut.

[0010] Preferably, the manhole structure in the present invention that can improve work efficiency is further configured such that the third fixing member is a bolt.

[0011] Preferably, the manhole structure in the present invention that can improve work efficiency is further configured such that the boom is in an inverted L-shape.

[0012] Preferably, a manhole structure in the present invention that can improve work efficiency is further configured such that a diaphragm gasket is provided between the manhole cover and the manhole connector.

[0013] Preferably, a manhole structure in the present invention that can improve work efficiency is further configured such that the manhole cover is provided with a handle.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The manhole structure of the present invention allows the frame to make linear displacement relative to the horizontal section of the boom by setting rollers in the frame, and allows the boom to rotate relative to the rotating mechanism by setting a rotating mechanism. By combining linear displacement and rotation, the manhole cover can always move along the axis of the first fixing stud. Therefore, the stud can always remain in the manhole connector. Workers only need to remove the lighter nut, which greatly reduces the labor intensity of workers and improves work efficiency. In addition, the rotating mechanism of the present invention provides Teflon between the bottom of the vertical section of the boom and the support cylinder, and is supported by several steel balls by the second retaining ring of the vertical section of the boom, which makes the rotation of the boom smoother. [Attached Image Description]

[0015] Figure 1 This is a schematic diagram of a manhole structure in the prior art.

[0016] Figure 2 This is a schematic diagram of the manhole structure in this invention (showing the situation when the manhole cover is not open).

[0017] Figure 3 This is a schematic diagram of the manhole structure from another angle in this invention.

[0018] Figure 4 for Figure 3 A detailed structural diagram of point A in the middle.

[0019] Figure 5 This is a schematic diagram of the rotating mechanism.

[0020] Figure 6 This is a schematic diagram of the boom structure.

[0021] Figure 7 This is a schematic diagram of the manhole structure in the present invention (showing the manhole cover when it is open).

[0022] Figure 1 In the middle: 1`, fastener; 2`, manhole connector; 3`, manhole cover.

[0023] Figures 2 to 7In the Chinese text: 1. Manhole nozzle, 2. Manhole cover, 20. Diaphragm gasket, 21. Handle, 22. Hook, 3. First fixing member, 4. Boom, 40. Horizontal section, 400. First sealing plate, 401. First retaining ring, 41. Vertical section, 410. Second retaining ring, 5. Hanging mechanism, 50. Hanging frame, 500. First side plate, 501. Second side plate, 502. Upper connecting plate, 503. Lower connecting plate, 504. Roller, 505. Second fixing member, 6. Rotating mechanism, 60. Support cylinder section, 600. Ball groove, 601. Ball, 602. Teflon, 61. Ear plate, 62. Lower sealing plate.

Detailed implementation manners

[0024] The following further describes in detail a manhole structure that can improve work efficiency according to the present invention through specific embodiments.

[0025] Refer Figures 2 to 7 As shown, a manhole structure that can improve work efficiency includes: a manhole nozzle 1 and a manhole cover 2. The manhole nozzle 1 and the manhole cover 2 are connected by a plurality of first fixing members 3. In this embodiment, the first fixing members 3 are studs and nuts. The manhole nozzle 1 and the manhole cover 2 are connected by a boom rotation mechanism. The boom rotation mechanism includes: a boom 4, a hanging mechanism 5 for connecting the boom 4 to the manhole cover 2, and a rotating mechanism 6 for connecting the boom 4 to the manhole nozzle 1. A diaphragm gasket 20 is provided between the manhole cover 2 and the manhole nozzle 1, so as to have better sealing performance. A handle 21 is provided on the manhole cover 2, so as to facilitate operation.

[0026] The boom 4 is arranged in an inverted L-shape. The boom 4 includes a horizontal section 40 and a vertical section 41. The free end of the horizontal section 40 is provided with a first sealing plate 400. The horizontal section 40 is provided with a first retaining ring 401. The vertical section 41 is provided with a second retaining ring 410. The hanging mechanism 5 includes a hanging frame 50 sleeved on the horizontal section 40 of the boom. The hanging frame 50 includes a first side plate 500, a second side plate 501, and an upper connecting plate 502 and a lower connecting plate 503 disposed between the first side plate 500 and the second side plate 501. In this embodiment, the first side plate 500 and the second side plate 501 are arranged in parallel. The upper connecting plate 502 and the lower connecting plate 503 are respectively arranged perpendicular to the first side plate 500 and the second side plate 501. The lifting frame 50 is equipped with a roller 504. One free end of the roller 504 is installed in the first side plate 500, and the other free end of the roller 504 is installed in the second side plate 501. The center of the roller 504 is supported on the horizontal section 40 of the boom 4 and can roll relative to the horizontal section 40 of the boom, thereby realizing the relative displacement movement between the lifting frame 50 and the horizontal section 40 of the boom. The top of the manhole cover 2 is equipped with a hook 22. The hook 22 is connected to the lower connecting plate 503 of the lifting frame 50 by a second fixing member 505. In this embodiment, the second fixing member 505 is a hinge bolt and a nut. The rotating mechanism 6 includes a support cylinder 60 and an ear plate 61 for connecting the support cylinder 60 and the manhole pipe 1. The bottom of the support cylinder 60 is equipped with a lower sealing plate 62. The lower sealing plate 62 is connected to the support cylinder 60 by a plurality of third fixing members. In this embodiment, the third fixing members are bolts. A ball bearing groove 600 is provided above the support cylinder section 60, and a number of ball bearings 601 are provided in the ball bearing groove 600. The bottom of the vertical section 41 of the boom 4 is housed in the support cylinder section 60. The second retaining ring 410 of the vertical section 41 of the boom is supported on the number of ball bearings 601. Teflon 602 is provided between the bottom of the vertical section 41 of the boom 4 and the support cylinder section 60, so that the rotation of the boom is smoother.

[0027] When it is necessary to open the manhole cover 2, first remove all the nuts on the first fixing member 3, leaving all the studs on the first fixing member 3 inside the manhole connector 1. Then, the worker holds the handle 21 on the manhole cover 2 and pushes it away from the manhole connector 1 along the axis of the studs of the first fixing member 3 (at this moment, the lifting frame 50 moves in a straight line away from the rotating mechanism 6 relative to the horizontal section 40 of the boom). While the worker pushes, the boom 4 rotates counterclockwise relative to the support cylinder 60 of the rotating mechanism 6. When the maintenance is completed and the manhole cover 2 needs to be closed, the worker holds the handle 21 on the manhole cover 2 and pushes it towards the manhole connector 1 along the axis of the studs of the first fixing member 3 (at this moment, the lifting frame 50 moves in a straight line towards the rotating mechanism 6 relative to the horizontal section 40 of the boom). While the worker pushes, the boom 4 rotates clockwise relative to the support cylinder 60 of the rotating mechanism 6. Finally, tighten all the nuts. In this invention, because the manhole cover 2 always moves along the axis of the stud whether it is open or closed, the stud of the first fixing member 3 can always remain inside the manhole connector 1, thus avoiding the need for workers to move the 40KG stud.

[0028] In summary, the manhole structure of this invention allows the lifting frame 50 to make linear displacement relative to the horizontal section 40 of the boom by setting rollers 504 inside the lifting frame, and allows the boom 4 to rotate relative to the rotating mechanism 6 by setting a rotating mechanism 6. Through the combination of linear displacement and rotation, the manhole cover 2 can always move along the axial direction of the stud of the first fixing member 3. Therefore, the stud can always remain inside the manhole connector 1, and the worker only needs to remove the lighter nut, which greatly reduces the worker's workload and improves work efficiency.

[0029] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A manhole structure that can improve work efficiency, comprising: A manhole connector and a manhole cover, wherein the manhole connector and the manhole cover are connected by a plurality of first fixing members, characterized in that: the manhole connector and the manhole cover are connected by a boom rotating mechanism, the boom rotating mechanism comprising: a boom, a suspension mechanism for connecting the boom and the manhole cover, and a rotation mechanism for connecting the boom and the manhole connector, the boom comprising a horizontal section and a vertical section, the free end of the horizontal section being provided with a first sealing plate, the horizontal section being provided with a first retaining ring, and the vertical section being provided with a second retaining ring, the suspension mechanism comprising: a lifting frame sleeved on the horizontal section of the boom, the lifting frame comprising a first side plate, a second side plate, and an upper connecting plate and a lower connecting plate disposed between the first side plate and the second side plate, the lifting frame being provided with rollers, one free end of the rollers being installed on a first... Inside one side plate, the other free end of the roller is installed inside the second side plate. The center of the roller is supported on the horizontal section of the boom and can roll relative to the horizontal section of the boom to achieve relative displacement between the lifting frame and the horizontal section of the boom. The top of the manhole cover is provided with a hook. The hook is connected to the lower connecting plate of the lifting frame by a second fixing member. The rotating mechanism includes: a support cylinder section and an ear plate for connecting the support cylinder section and the manhole pipe. The bottom of the support cylinder section is provided with a lower sealing plate. The lower sealing plate is connected to the support cylinder section by several third fixing members. The upper part of the support cylinder section is provided with a ball groove containing several balls. The bottom of the vertical section of the boom is housed in the support cylinder section. The second retaining ring of the vertical section of the boom is supported on several balls.

2. The manhole structure for improving work efficiency as described in claim 1, characterized in that: Teflon is installed between the bottom of the vertical section of the boom and the support cylinder.

3. The manhole structure for improving work efficiency as described in claim 1, characterized in that: The first fastener is a stud and a nut.

4. The manhole structure for improving work efficiency as described in claim 1, characterized in that: The second fastener is a hinge bolt and a nut.

5. The manhole structure for improving work efficiency as described in claim 1, characterized in that: The third fastener is a bolt.

6. The manhole structure for improving work efficiency as described in claim 1, characterized in that: The boom is arranged in an inverted L-shape.

7. A manhole structure for improving work efficiency as described in claim 1, characterized in that: A diaphragm gasket is provided between the manhole cover and the manhole connector.

8. The manhole structure for improving work efficiency as described in claim 1, characterized in that: The manhole cover is equipped with a handle.

Images