Municipal engineering wellhead device

By designing automatic or semi-automatic manhole cover opening and closing mechanism and fast clamping mechanism, the problems of inconvenience and safety hazards of the existing municipal engineering wellhead equipment are solved, and the rapid and reliable locking and automatic opening and closing of the manhole cover are achieved, improving work efficiency and safety.

CN222810071UActive Publication Date: 2025-04-29HUNAN YUNYANG ASPHALT PAVEMENT CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202420477096.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-12
Publication Date
2025-04-29
Estimated Expiration
2034-03-12

AI Technical Summary

Technical Problem

The existing municipal engineering wellhead devices lack automatic or semi-automatic opening and closing mechanisms, which are inconvenient to operate and have safety hazards, and lack a fast and reliable locking mechanism, which is prone to accidental opening due to external forces, affecting public safety and maintenance efficiency.

Method used

A municipal engineering wellhead device is designed, including a manhole cover opening and closing mechanism and a quick clamping mechanism. The manhole cover opening and closing mechanism realizes automatic or semi-automatic opening and closing through the combination of base, manhole cover, connecting frame and telescopic cylinder. The fast clamping mechanism realizes a fast and reliable locking mechanism through the design of parts such as the clamping rod, the clamping groove and the unlocking lever, and simplifies the unlocking operation through the clamping auxiliary mechanism.

Benefits of technology

The automatic or semi-automatic opening and closing of the manhole cover is realized, which reduces the risk of manual operation and emergency response time, improves work efficiency and safety, ensures the fast and reliable locking of the manhole cover, prevents accidental opening, and extends the service life of the equipment.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222810071U_ABST
    Figure CN222810071U_ABST
Patent Text Reader

Abstract

The utility model discloses a municipal engineering wellhead device which comprises a ground pile, a well lid opening and closing mechanism, a quick clamping mechanism and a clamping auxiliary mechanism, and the well lid opening and closing mechanism comprises a base, a well lid, a first connecting frame, a second connecting frame and a telescopic air cylinder. The rapid clamping mechanism comprises a clamping pipe, a clamping rod, a clamping groove, a clamping transverse rod, a clamping longitudinal rod and an unlocking rod, the clamping auxiliary mechanism comprises a rotating sleeve, a handle, a gradient block, a guide block and a guide groove, and the structural strength of a telescopic air cylinder and a base enables the device to adapt to different ground conditions and external force; and by means of the design of the clamping rod, the clamping groove and other parts, a rapid and reliable locking mechanism is achieved, and the situation that the well lid is accidentally opened due to vibration or impact is prevented.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of municipal engineering, and more specifically, to a municipal engineering wellhead device. Background Art

[0002] In the existing technology, firstly, some devices do not have automatic or semi-automatic opening and closing mechanisms, and the opening and closing of the manhole covers will rely entirely on manpower, which increases the risk of workers being injured during the opening and closing process. Especially in emergency situations, manual operation of the manhole cover opening and closing is not only time-consuming and labor-intensive, but also affects the response speed of emergency repairs or daily inspections, reducing overall work efficiency. Secondly, some devices lack a fast and reliable locking mechanism, which means that the manhole covers are easily accidentally opened due to external forces such as vibrations from passing vehicles, which not only increases the risk to public safety, but may also cause damage to the manhole covers. When underground facilities need to be repaired or inspected, the lack of a quick snap-on mechanism will make opening the manhole covers more difficult and time-consuming, thereby affecting the efficiency and safety of maintenance work. Finally, operators of some devices may need to use more tools and force to complete the locking or unlocking operations, which not only increases the workload, but may also damage the equipment due to improper operation. The correct movement of the unlocking rod is ensured by a precise guide system. The lack of such a design may cause errors during operation, increase the risk of misoperation, and reduce the overall operational reliability. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the problems existing in the prior art, the utility model provides a municipal engineering wellhead device to solve the technical problems mentioned in the background technology such as the lack of automatic or semi-automatic functions and the inconvenience of disassembly and maintenance.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a municipal engineering wellhead device, comprising a ground pile, a well cover opening and closing mechanism, a quick clamping mechanism and a clamping auxiliary mechanism, the well cover opening and closing mechanism comprising a base, a well cover, a first connecting frame, a second connecting frame and a telescopic cylinder, the base is cooperatively arranged on the inner wall of the ground pile, the first connecting frame is installed on the inner side of the well cover, the second connecting frame is installed on the inner wall of the base, the two ends of the telescopic cylinder are respectively movably connected with the first connecting frame and the second connecting frame, and the well cover is cooperatively arranged on one side of the base, the quick clamping mechanism comprises a clamping tube, a clamping rod, a clamping groove, a clamping cross bar, a clamping longitudinal rod and an unlocking rod, the clamping rod is fixedly connected to the base, the clamping tube is fixedly installed on the ground pile, the clamping rod is arranged in the clamping tube, a plurality of groups of clamping grooves are arranged on the side of the clamping rod, two groups of clamping longitudinal rods are vertically connected to the side of the clamping cross bar, and the unlocking rod is arranged at one end of the clamping cross bar, and the clamping longitudinal rod can extend into the clamping groove to fix the clamping rod in the clamping tube.

[0007] The utility model is further configured as follows: the card connection auxiliary mechanism includes a rotating sleeve, a handle, a slope block, a guide block and a guide groove; the rotating sleeve is movably sleeved on the outer wall of the card connection tube; multiple groups of handles are installed on the side of the rotating sleeve; the guide block is installed on the inner wall of the rotating sleeve; the guide groove is installed on the outer wall of the card connection sleeve; and the guide block can be embedded in the guide groove to cooperate with the rotating guide connection; multiple groups of slope blocks are installed above the rotating sleeve, and the slope block can push the unlocking rod to push the card connection longitudinal rod out of the card connection groove. Through the design of the rotating sleeve and the handle, the operator can easily complete the unlocking operation without using complicated tools or excessive physical labor. The cooperation between the guide block and the guide groove ensures the accuracy of the movement of the unlocking rod, avoids misoperation during operation, and improves the reliability of operation.

[0008] The utility model is further configured such that support rods are symmetrically provided at both ends of the interior of the base, one end of the support rod is movably connected to the inner wall of the base, and the other end of the support rod is provided with a fixing sleeve. The configuration of the support rod and the fixing sleeve ensures the structural strength of the telescopic cylinder and the base when the manhole cover is in the open state to adapt to different ground conditions and external forces.

[0009] The utility model is further configured that a fixing rod is provided on the side of the telescopic cylinder, and the fixing rod can extend into the fixing sleeve to fix the support rod on the side of the telescopic cylinder. The setting of the fixing rod ensures the connection between the telescopic cylinder and the support rod.

[0010] The utility model is further configured such that a spring is provided on the outer side of the clamping tube, the other end of the spring is connected to the clamping cross bar, and the spring is installed between two sets of clamping longitudinal bars. The addition of the spring gives the clamping mechanism a certain elasticity, which helps to alleviate the pressure caused by vibration or impact and prolong the service life of the equipment.

[0011] The utility model is further configured such that a rotating shaft is symmetrically provided on the side of the base, a mounting tube is provided at the bottom of the manhole cover, and the rotating shaft can be extended into the mounting tube to flexibly connect the manhole cover to the side of the base. The rotating shaft and the mounting tube ensure a flexible connection between the manhole cover and the base, so that the manhole cover can be opened and closed smoothly, while preventing the manhole cover from being completely separated from the base, thereby increasing safety during use.

[0012] The utility model is further configured that a through hole is provided on the side of the clamping tube, and the through hole and the clamping groove are correspondingly arranged. The arrangement of the through hole is conducive to the clamping operation of the clamping longitudinal rod.

[0013] The utility model is further configured such that the clamping longitudinal rod is movably arranged in the through hole, and the clamping longitudinal rod can pass through the through hole to fix the clamping rod inside the clamping tube. The design of the through hole and the clamping longitudinal rod makes the locking and unlocking of the clamping mechanism more convenient and intuitive. The operator can clearly see the locking state, thus avoiding misoperation.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a municipal engineering wellhead device having the following

[0016] Beneficial effects:

[0017] The utility model is provided with a manhole cover opening and closing mechanism, which realizes automatic or semi-automatic opening and closing of the manhole cover through the combination of the base, the manhole cover, the connecting frame and the telescopic cylinder. This design reduces the risk of manual operation of the manhole cover, and can respond quickly in emergency situations, thereby ensuring the safety of the staff. The arrangement of the support rod and the fixing sleeve ensures the structural strength of the telescopic cylinder and the base when the manhole cover is opened, so that the device can adapt to different ground conditions and external forces, thereby improving the stability and reliability of the device.

[0018] The utility model is provided with a quick clamping mechanism, which realizes a fast and reliable locking mechanism through the design of the clamping tube, the clamping rod, the clamping groove and other parts. This not only prevents the manhole cover from being accidentally opened due to vibration or impact, thereby improving public safety, but also prevents the manhole cover from being damaged. The addition of the spring provides a certain elasticity for the clamping mechanism, helps to alleviate the pressure caused by vibration or impact, thereby extending the service life of the equipment and maintaining its long-term stability and reliability.

[0019] The utility model is provided with a card connection auxiliary mechanism, a design of a rotating sleeve and a handle, and the coordinated use of a slope block, a guide block and a guide groove makes the unlocking operation simple and convenient, without the need for complicated tools or excessive physical labor, which greatly reduces the workload of the operator and improves work efficiency. The coordination of the guide block and the guide groove ensures the accuracy of the movement of the unlocking rod, effectively avoids misoperation during the operation process, and improves the accuracy and reliability of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the device in the present utility model when it is not in use;

[0021] Figure 2 This is a structural schematic diagram of the connection method between the support rod and the telescopic cylinder in the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the device in the utility model from the back side perspective;

[0023] Figure 4 It is a structural schematic diagram of the quick clamping mechanism and the clamping auxiliary mechanism in the utility model;

[0024] Figure 5 It is a schematic diagram of the internal structure of the quick clamping mechanism and the clamping auxiliary mechanism in the utility model.

[0025] In the figure: 1, ground pile 6; 2, base; 3, manhole cover; 4, first connecting frame; 5, second connecting frame; 6, telescopic cylinder; 7, clamping tube; 8, clamping rod; 9, clamping groove; 10, clamping cross bar; 11, clamping longitudinal rod; 12, unlocking rod; 13, rotating sleeve; 14, handle; 15, slope block; 16, guide block; 17, guide groove; 18, support rod; 19, fixing sleeve; 20, fixing rod; 21, spring; 22, rotating shaft; 23, mounting tube; 24, through hole. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0029] See also Figure 1-5 A municipal engineering wellhead device comprises a ground pile 1, a well cover opening and closing mechanism, a quick clamping mechanism and a clamping auxiliary mechanism. The well cover opening and closing mechanism comprises a base 2, a well cover 3, a first connecting frame 4, a second connecting frame 5 and a telescopic cylinder 6. The base 2 is arranged on the inner wall of the ground pile 1, the first connecting frame 4 is installed on the inner side of the well cover 3, and the second connecting frame 5 is installed on the inner wall of the base 2. The two ends of the telescopic cylinder 6 are respectively movably connected with the first connecting frame 4 and the second connecting frame 5. The well cover 3 is arranged on one side of the base 2. The quick clamping mechanism and the auxiliary clamping mechanism are provided. The quick-clamping mechanism includes a clamping tube 7, a clamping rod 8, a clamping groove 9, a clamping cross bar 10, a clamping longitudinal rod 11 and an unlocking rod 12. The clamping rod 8 is fixedly connected to the base 2, the clamping tube 7 is fixedly installed on the ground pile 1, the clamping rod 8 is arranged in the clamping tube 7, and multiple groups of clamping grooves 9 are arranged on the side of the clamping rod 8. Two groups of clamping longitudinal rods 11 are vertically connected to the side of the clamping cross bar 10, and the unlocking rod 12 is arranged at one end of the clamping cross bar 10. The clamping longitudinal rod 11 can extend into the clamping groove 9 to fix the clamping rod 8 in the clamping tube 7.

[0030] In this embodiment, when the operation of the manhole cover opening and closing mechanism is required, when the manhole cover 3 needs to be opened or closed, the operator starts the telescopic cylinder 6, which serves as a power source, and the two ends of the telescopic cylinder 6 are respectively movably connected to the first connecting frame 4 and the second connecting frame 5. As the telescopic cylinder 6 extends or contracts, the manhole cover 3 is driven to move accordingly, and this movement drives the manhole cover 3 to open or close along the side of the base 2. The base 2 is fixed on the inner wall of the ground pile 1, ensuring the stability and reliability of the entire opening and closing process. When the operation of the quick clamping mechanism is required, the clamping rod 8 is installed inside the clamping tube 7, and multiple groups of clamping grooves 9 are arranged on the side of the clamping longitudinal rod 11, and the clamping longitudinal rod 11 is vertically connected to the side of the clamping cross bar 10 and can be extended into the clamping groove 9. When the clamping longitudinal rod 11 is extended into the clamping groove 9, the clamping rod 8 is fixed inside the clamping tube 7, realizing the fixation between the base 2 and the ground pile 1. By operating the unlocking rod 12, the clamping longitudinal rod 11 can be pushed to withdraw from the clamping groove 9, thereby unlocking the clamping rod 8, and then realizing the quick installation and removal of the base 2.

[0031] The clamping auxiliary mechanism includes a rotating sleeve 13, a handle 14, a slope block 15, a guide block 16 and a guide groove 17. The rotating sleeve 13 is movably sleeved on the outer wall of the clamping tube 7. Multiple groups of handles 14 are installed on the side of the rotating sleeve 13. The guide block 16 is installed on the inner wall of the rotating sleeve 13. The guide groove 17 is installed on the outer wall of the clamping sleeve, and the guide block 16 can be embedded in the guide groove 17 to cooperate with the rotating guide connection. Multiple groups of slope blocks 15 are installed above the rotating sleeve 13, and the slope block 15 can push the unlocking rod 12 to push the clamping longitudinal rod 11 out of the clamping groove 9.

[0032] When the operation of the card-engaging auxiliary mechanism is required, multiple sets of handles 14 are installed on the side of the rotating sleeve 13. The user can rotate the rotating sleeve 13 by rotating the handles 14. The slope block 15 above the rotating sleeve 13 will contact the unlocking rod 12 when rotating. According to the design of the slope, this contact pushes the unlocking rod 12 to move, thereby pushing the card-engaging longitudinal rod 11 out of the card-engaging groove 9 to achieve quick unlocking. The guide block 16 is installed on the inner wall of the rotating sleeve 13, and the guide groove 17 is installed on the outer wall of the card-engaging sleeve. When the rotating sleeve 13 rotates, the guide block 16 is embedded in the guide groove 17 to ensure the smooth rotation of the rotating sleeve 13, thereby accurately controlling the pushing process of the unlocking rod 12.

[0033] See also Figure 1-5As a supplementary implementation method of a municipal engineering wellhead device for the manhole cover opening and closing mechanism, the quick clamping mechanism and the clamping auxiliary mechanism: support rods 18 are symmetrically arranged at both ends of the inner side of the base 2, one end of the support rod 18 is movably connected to the inner wall of the base 2, and the other end of the support rod 18 is provided with a fixing sleeve 19, and a fixing rod 20 is arranged on the side of the telescopic cylinder 6, and the fixing rod 20 can be extended into the fixing sleeve 19 to fix the support rod 18 on the side of the telescopic cylinder 6, and a spring 21 is arranged on the outer side of the clamping tube 7, and the other end of the spring 21 is provided with a spring 21. One end is connected to the clamping cross bar 10, and the spring 21 is installed between the two groups of clamping longitudinal rods 11. The side of the base 2 is symmetrically provided with a rotating shaft 22, the bottom of the manhole cover 3 is provided with a mounting tube 23, and the rotating shaft 22 can extend into the mounting tube 23 to flexibly connect the manhole cover 3 to the side of the base 2. The side of the clamping tube 7 is provided with a through hole 24, and the through hole 24 is corresponding to the clamping groove 9. The clamping longitudinal rod 11 is movably arranged in the through hole 24, and the clamping longitudinal rod 11 can pass through the through hole 24 to fix the clamping rod 8 inside the clamping tube 7.

[0034] More specifically, the support rod 18 and the fixing sleeve 19 provide additional stability to ensure the structural strength of the telescopic cylinder 6 and the base 2 when the manhole cover 3 is in the open state, so as to adapt to different ground conditions and external forces. The addition of the spring 21 gives the quick clamping mechanism a certain elasticity, which facilitates the clamping longitudinal rod 11 to extend into the clamping groove 9, helps to alleviate the pressure caused by vibration or impact, and extends the service life of the equipment. The rotating shaft 22 and the mounting tube 23 ensure a flexible connection between the manhole cover 3 and the base 2, so that the manhole cover 3 can be opened and closed smoothly, while preventing the manhole cover 3 from completely separating from the base 2, thereby increasing safety during use. The design of the through hole 24 and the clamping longitudinal rod 11 makes the locking and unlocking of the clamping mechanism more convenient and intuitive, and the operator can clearly see the locking state to avoid misoperation.

[0035] In summary, when the overall equipment is in use or running: when the opening and closing mechanism of the manhole cover 3 needs to be operated, when the manhole cover 3 needs to be opened or closed, the operator starts the telescopic cylinder 6. The telescopic cylinder 6 serves as a power source, and its two ends are movably connected to the first connecting frame 4 and the second connecting frame 5 respectively. As the telescopic cylinder 6 extends or contracts, the manhole cover 3 is driven to move accordingly. This movement drives the manhole cover 3 to open or close along the side of the base 2. The base 2 is fixed to the inner wall of the ground pile 1, ensuring the stability and reliability of the entire opening and closing process.

[0036] When the operation of the quick clamping mechanism is required, the clamping rod 8 is installed inside the clamping tube 7, and multiple groups of clamping grooves 9 are arranged on its side. The clamping longitudinal rod 11 is vertically connected to the side of the clamping cross bar 10 and can extend into the clamping groove 9. When the clamping longitudinal rod 11 extends into the clamping groove 9, the clamping rod 8 is fixed inside the clamping tube 7 to achieve the fixation between the base 2 and the ground pile 1. By operating the unlocking rod 12, the clamping longitudinal rod 11 can be pushed out of the clamping groove 9, thereby unlocking the clamping rod 8, and then realizing the rapid installation and disassembly of the base 2.

[0037] When the operation of the card-engaging auxiliary mechanism is required, multiple sets of handles 14 are installed on the side of the rotating sleeve 13. The user can rotate the rotating sleeve 13 by rotating the handles 14. The slope block 15 above the rotating sleeve 13 will contact the unlocking rod 12 when rotating. According to the design of the slope, this contact pushes the unlocking rod 12 to move, thereby pushing the card-engaging longitudinal rod 11 out of the card-engaging groove 9 to achieve quick unlocking. The guide block 16 is installed on the inner wall of the rotating sleeve 13, and the guide groove 17 is installed on the outer wall of the card-engaging sleeve. When the rotating sleeve 13 rotates, the guide block 16 is embedded in the guide groove 17 to ensure the smooth rotation of the rotating sleeve 13, thereby accurately controlling the pushing process of the unlocking rod 12.

[0038] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A municipal engineering wellhead device, comprising a ground pile (1), a well cover opening and closing mechanism, a quick clamping mechanism and a clamping auxiliary mechanism, wherein: The manhole cover opening and closing mechanism comprises a base (2), a manhole cover (3), a first connecting frame (4), a second connecting frame (5) and a telescopic cylinder (6); the base (2) is arranged on the inner wall of the ground pile (1); the first connecting frame (4) is installed on the inner side of the manhole cover (3); the second connecting frame (5) is installed on the inner wall of the base (2); the two ends of the telescopic cylinder (6) are respectively movably connected to the first connecting frame (4) and the second connecting frame (5); the manhole cover (3) is cooperatively arranged on one side of the base (2); the quick clamping mechanism comprises a clamping tube (7), a clamping rod (8), a clamping rod (9), a clamping rod (10), a clamping rod (11), a clamping rod (12), a clamping rod (13), a clamping rod (14), a clamping rod (15), a clamping rod (16), a clamping rod (17), a clamping rod (18), a clamping rod (19), a clamping rod (21), a clamping rod (22), a clamping rod (23), a clamping rod (24), a clamping rod (25), a clamping rod (26), a clamping rod (27), a clamping rod (28), a clamping rod (29), a clamping rod (31), a clamping rod (32), a clamping rod (33), a clamping rod (34), a clamping rod (35), a clamping rod (36), a clamping rod (37), a clamping rod (38), a clamping rod (49), a clamping rod (5 The invention relates to a ground pile (1) and a ground pile (2). The ground pile (1) comprises a plurality of ground piles (1) and a ground pile (2). The ground pile (1) comprises a plurality of ground piles (1) and a ground pile (2). The ground pile (1) comprises a plurality of ground piles (1) and a ground pile (2). The ground pile (1) comprises a plurality of ground piles (1) and a ground pile (2). The ground pile (1) comprises a plurality of ground piles (1) and a ground pile (2). The ground pile (1) comprises a plurality of ground piles (1) and a ground pile (2). The ground pile (1) comprises a plurality of ground piles (1) and a ground pile (2). The ground pile (1) comprises a plurality of ground piles (1) and a ground pile (2). The ground pile (1) comprises a plurality of ground piles (1) and a ground pile (2). The ground pile (1) comprises a plurality of ground piles (1) and a ground pile (2). The ground pile (1) comprises a plurality of ground piles (1) and a ground pile (2).

2. A municipal engineering wellhead device according to claim 1, characterized in that: The clamping auxiliary mechanism comprises a rotating sleeve (13), a handle (14), a gradient block (15), a guide block (16) and a guide groove (17); the rotating sleeve (13) is movably sleeved on the outer wall of the clamping tube (7); a plurality of handles (14) are mounted on the side of the rotating sleeve (13); the guide block (16) is mounted on the inner wall of the rotating sleeve (13); the guide groove (17) is mounted on the outer wall of the clamping sleeve; the guide block (16) can be embedded in the guide groove (17) to cooperate with the rotation guide connection; a plurality of gradient blocks (15) are mounted above the rotating sleeve (13); and the gradient blocks (15) can push the unlocking rod (12) to push the clamping longitudinal rod (11) out of the clamping groove (9).

3. A municipal engineering wellhead device according to claim 1, characterized in that: Support rods (18) are symmetrically arranged at both ends of the base (2), one end of the support rod (18) is movably connected to the inner wall of the base (2), and the other end of the support rod (18) is provided with a fixing sleeve (19).

4. A municipal engineering wellhead device according to claim 1 or 3, characterized in that: A fixing rod (20) is provided on the side of the telescopic cylinder (6), and the fixing rod (20) can extend into the fixing sleeve (19) to fix the support rod (18) on the side of the telescopic cylinder (6).

5. A municipal engineering wellhead device according to claim 1, characterized in that: A spring (21) is provided on the outer side of the clamping tube (7), the other end of the spring (21) is connected to the clamping cross bar (10), and the spring (21) is installed between two groups of clamping longitudinal bars (11).

6. A municipal engineering wellhead device according to claim 1, characterized in that: A rotating shaft (22) is symmetrically arranged on the side of the base (2), a mounting tube (23) is arranged at the bottom of the manhole cover (3), and the rotating shaft (22) can extend into the mounting tube (23) to flexibly connect the manhole cover (3) to the side of the base (2).

7. A municipal engineering wellhead device according to claim 1, characterized in that: A through hole (24) is provided on the side of the clamping tube (7), and the through hole (24) and the clamping groove (9) are arranged correspondingly.

8. A municipal engineering wellhead device according to claim 1, characterized in that: The clamping longitudinal rod (11) is movably arranged in the through hole (24), and the clamping longitudinal rod (11) can pass through the through hole (24) to fix the clamping rod (8) inside the clamping tube (7).