Municipal public municipal pipe well construction auxiliary device

Abstract

The invention discloses a municipal public municipal tube well construction auxiliary device which comprises a set of supporting seats, symmetrical frame bodies are arranged at the tops of the supporting seats, a lantern ring is arranged between the tops of the frame bodies, an air cylinder is arranged at the top of the lantern ring, an air rod matched with the air cylinder is arranged in the air cylinder and penetrates through the air cylinder, and the air rod penetrates through the air cylinder. The bottom of the air rod is provided with a U-shaped clamping block head, a first gear is arranged in the U-shaped clamping block head, side racks meshed with each other are arranged on the two sides of the first gear, a lifting sliding plate is arranged on the sides, away from the first gear, of the side racks, side plates are arranged on the two sides of the lifting sliding plate, and the side plates are fixed to the upper portion of the inner wall of the frame body. A horizontal supporting auxiliary part is arranged at the bottom of the lifting sliding plate, a set of hooks are arranged on the horizontal supporting auxiliary part, balance abutting columns are arranged at the positions, located on the lower portion of the outer side of the lifting sliding plate, of the two sides of the horizontal supporting auxiliary part, and hidden dangers of toppling and accidentally injuring workers in the extracting and conveying process are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe well construction devices, and more specifically, to a construction auxiliary device for municipal public pipe wells. Background Art

[0002] Chinese Patent Document CN112429684A discloses a construction auxiliary device for municipal public pipe wells, including an operation vehicle, a mounting plate vertically slidably connected to the operation vehicle, and two hook rods rotatably connected to the mounting plate. The two hook rods correspond to two lifting holes on the manhole cover one by one. A rotating member for simultaneously driving the two hook rods to rotate is provided on the mounting plate. A driving member for driving the mounting plate to vertically slide on the operation vehicle or driving the rotating member to rotate is provided on the operation vehicle. A reversing member for changing the transmission direction of the driving member so that the driving member drives the mounting plate to slide or drives the rotating member to rotate is provided on the driving member.

[0003] The above patent document has the effects of reducing the manpower during the disassembly of the manhole cover, reducing potential safety hazards, and making the disassembly more convenient; however, during the specific implementation process, when the manhole cover is lifted and transported, the manhole cover will be affected and then shake, which is likely to cause the phenomenon of tipping over, and after tipping over, the manhole cover is likely to fall off and injure the workers. Summary of the Invention

[0004] The technical task of the present invention is to provide a construction auxiliary device for municipal public pipe wells to solve the above problems in view of the above deficiencies.

[0005] The technical solution of the present invention is realized as follows: A construction auxiliary device for municipal public pipe wells includes a group of support seats. A symmetrically arranged frame body is provided on the top of the support seats. A collar is provided between the tops of the frame bodies. A cylinder is provided on the top of the collar. A cooperating air rod is provided in the cylinder. The air rod penetrates through the cylinder. A U-shaped clamping head is provided at the bottom of the air rod. A first gear is provided in the U-shaped clamping head. Side racks meshing with both sides of the first gear are provided. Lifting sliding plates are provided on the sides of the side racks away from the first gear. Side plates are provided on both sides of the lifting sliding plates and are fixed at the upper part of the inner wall of the frame body. A horizontal support and auxiliary part is provided at the bottom of the lifting sliding plate. A group of hooks is provided on the horizontal support and auxiliary part. Balance abutting columns are provided on both sides of the horizontal support and auxiliary part at the lower outer sides of the lifting sliding plates.

[0006] Preferably, a notch is provided at the bottom of the U-shaped clamping head, and the first gear is fixed in the notch; convex strips are longitudinally provided at the centers of both sides of the lifting sliding plate, and a sliding groove adapted to the convex strips is longitudinally provided at the center of the inner wall of the side plate.

[0007] Preferably, the horizontal support auxiliary part includes a top plate. The bottom of the top plate is evenly provided with strip-shaped grooves. The strip-shaped grooves are of T-shaped structure. Slide plates are arranged in the strip-shaped grooves. The outer ends of the slide plates penetrate outside the strip-shaped grooves. Arc-shaped clamping plates are arranged at the outer ends of the slide plates. After the arc-shaped clamping plates are combined, they form a circular structure.

[0008] Preferably, limit rods are arranged at the inner ends of the bottoms of the slide plates. The limit rods penetrate through the bottoms of the strip-shaped grooves. Gears III are arranged at the lower parts of the limit rods below the top plate. A number of arc-shaped grooves are arranged on the gears III. The limit rods are inserted into the arc-shaped grooves. The center of the top of the gear III is movably connected to the center of the bottom of the top plate through a shaft; A gear II meshing with the gear III is arranged on one side of the gear III. A gear shaft is arranged at the center of the top of the gear II. The gear shaft penetrates through the top plate. A motor is arranged at the top of the gear shaft. The motor is fixed on one side of the top of the top plate.

[0009] Preferably, connecting rods are arranged at the middle positions between the strip-shaped grooves at the bottom of the top plate. Inner plates are arranged at the bottoms of the connecting rods. Support rods are inserted through the middles of the inner plates. Fixed blocks are arranged at the tops of the support rods. Pyramid-shaped support ends are arranged at the bottoms of the support rods. Support columns are arranged at the bottoms of the pyramid-shaped support ends. Gravity plates are arranged at the bottoms of the support columns.

[0010] Preferably, a bottom plate is arranged below the inner plate. A number of support plates are arranged at the side edges of the top of the bottom plate. Top rods are inserted through the upper parts of the support plates. Limit disks II are arranged at the inner ends of the top rods. Limit spheres are arranged on the sides of the limit disks II away from the top rods; Limit cylinders are arranged on the inner sides of the support plates on the top rods. Limit disks I are arranged on the sides of the limit cylinders away from the support plates. The top rods penetrate through the limit cylinders and the limit disks I; Return springs II are sleeved on the top rods between the limit disks I and the limit disks II.

[0011] Preferably, the support columns penetrate through the bottom plate. A return spring I is sleeved on the support columns between the top of the gravity plate and the bottom surface of the bottom plate; The limit spheres are in contact with the sides of the pyramid-shaped support ends.

[0012] Preferably, cables are arranged at the tops of the hooks. The cables penetrate through the bottom plate. The upper parts of the cables penetrate through the inner plate; A group of winding disk supports are arranged at both sides of the top of the inner plate. Winding disks are arranged between the winding disk supports. The cables are wound on the winding disks. One ends of the winding disks are all connected to micro-drivers. The micro-drivers are fixed at the side edges of the top of the inner plate through driver mounting seats.

[0013] Preferably, a magnetic plate is provided at the bottom of the third gear, and an armature magnetically interacting with the magnetic plate is provided at the top of the fixed block; friction strips are provided on the inner wall of the arc-shaped clamping plate; the gravity plate is made of a magnetic material.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. The auxiliary device is erected around the pipe well. When it is necessary to extract and transport the manhole cover during the construction operation of the pipe well, the horizontally supported auxiliary part is used to clamp the extracted manhole cover. At the same time, under the action of the upper and lower forces, the manhole cover extracted and transported is clamped in multiple directions, so that the force generated during the extraction and transportation process will be dispersed to each contact end and surface, thereby weakening the concentration of force, and thus maintaining the stability of the entire extraction process, and avoiding the potential hazard of tipping over and injuring workers during the extraction and transportation process.

[0015] 2. The balance struts provided on both sides adjust the depth of downward support according to the rotation direction of the first gear, and the balance struts are adjusted according to the ground conditions at the connection, so as to keep the bottom surface of the balance struts in close contact with the ground at the connection all the time. In this way, the entire auxiliary device will be firmly supported on the ground, maintaining the stability of the entire auxiliary device.

[0016] 3. The gravity plate presses on the top surface of the manhole cover. After receiving the pressure from above, the fixed block will push upward, causing the top armature to attract the upper magnetic plate, and causing the ejector rod to slide around and push against the upper part of the inner wall of the surrounding arc-shaped clamping plate, maintaining the stability of the arc-shaped clamping plate. In this way, the manhole cover will be subjected to the pressure from above, the tension from below and the clamping force from the periphery, and the force generated by the manhole cover during extraction and transportation will be dispersed through the contact points or surfaces, ensuring the safety of extraction and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is the overall structural schematic diagram according to the embodiment of the present invention; Figure 2 is the exploded view of the horizontally supported auxiliary part according to the embodiment of the present invention; Figure 3 is the connection structure schematic diagram between the inner plate and the bottom plate according to the embodiment of the present invention; Figure 4 is the connection structure schematic diagram of the support column according to the embodiment of the present invention; Figure 5 An exploded view of the connection structure between the inner plate and the bottom plate according to an embodiment of the present invention; Figure 6 A schematic diagram of the connection structure of the arc-shaped clamping plate according to an embodiment of the present invention; Figure 7 A schematic diagram of the connection structure between the arc-shaped clamping plate and the sliding plate according to an embodiment of the present invention.

[0019] In the figure: 1. Support base; 2. Frame body; 3. Collar; 4. Cylinder; 5. Air rod; 6. U-shaped clamp head; 7. First gear; 8. Side rack; 9. Lifting sliding plate; 10. Side plate; 11. Horizontal support auxiliary part; 12. Hook; 13. Balancing abutment column; 14. Top plate; 15. Strip-shaped groove; 16. Sliding plate; 17. Arc-shaped clamping plate; 18. Limiting rod; 19. Third gear; 20. Arc-shaped groove; 21. Second gear; 22. Motor; 23. Connecting rod; 24. Inner plate; 25. Support rod; 26. Fixed block; 27. Pyramidal support end; 28. Support column; 29. Gravity plate; 30. Bottom plate; 31. Support plate; 32. Thrust rod; 33. Second limit disk; 34. Limiting sphere; 35. Limiting cylinder; 36. First limit disk; 37. Second return spring; 38. First return spring; 39. Cable; 40. Winding disk support; 41. Winding disk; 42. Micro driver; 43. Driver mounting seat; 44. Magnetic plate; 45. Armature. Detailed implementation manners

[0020] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0021] The present invention will be further described below with reference to the drawings and specific embodiments.

[0022] According to an embodiment of the present invention, as shown in Figure 1-7 shown: The present invention provides an auxiliary device for the construction of municipal public utility pipe wells, including a group of support seats 1. A symmetrically arranged frame 2 is provided on the top of the support seat 1. A collar 3 is provided between the tops of the frames 2. A cylinder 4 is provided on the top of the collar 3. A matching air rod 5 is arranged in the cylinder 4. The air rod 5 penetrates through the cylinder 4. A U-shaped clamping head 6 is provided at the bottom of the air rod 5. A first gear 7 is arranged in the U-shaped clamping head 6. Side racks 8 meshing with each other are arranged on both sides of the first gear 7. A lifting slide plate 9 is arranged on the side of the side rack 8 away from the first gear 7. Side plates 10 are arranged on both sides of the lifting slide plate 9. The side plates 10 are fixed at the upper part of the inner wall of the frame 2. A horizontal support auxiliary part 11 is provided at the bottom of the lifting slide plate 9. A group of hooks 12 are arranged on the horizontal support auxiliary part 11. Balance abutting columns 13 are arranged on both sides of the horizontal support auxiliary part 11 at the lower outer part of the lifting slide plate 9.

[0023] Wherein, a notch is provided at the bottom of the U-shaped clamping head 6, and the first gear 7 is fixed in the notch; convex strips are longitudinally arranged at the centers of both sides of the lifting slide plate 9, and a chute adapted to the convex strips is longitudinally arranged at the center of the inner wall of the side plate 10. The horizontal support auxiliary part 11 includes a top plate 14. Strip-shaped grooves 15 are uniformly arranged at the bottom of the top plate 14. The strip-shaped grooves 15 are of T-shaped structure. Sliding plates 16 are arranged in the strip-shaped grooves 15. The outer ends of the sliding plates 16 penetrate through the outside of the strip-shaped grooves 15. Arc-shaped clamping plates 17 are arranged at the outer ends of the sliding plates 16. The arc-shaped clamping plates 17 form a circular structure after combination. Limiting rods 18 are arranged at the inner ends of the bottoms of the sliding plates 16. The limiting rods 18 penetrate through the bottoms of the strip-shaped grooves 15. A third gear 19 is arranged at the lower part of the limiting rod 18 below the top plate 14. A number of arc-shaped grooves 20 are arranged on the third gear 19. The limiting rod 18 is inserted in the arc-shaped grooves 20. The center of the top of the third gear 19 is movably connected to the center of the bottom of the top plate 14 through a shaft. A second gear 21 meshing with the third gear 19 is arranged on one side of the third gear 19. A gear shaft is arranged at the center of the top of the second gear 21. The gear shaft penetrates through the top plate 14. A motor 22 is arranged at the top of the gear shaft. The motor 22 is fixed on one side of the top of the top plate 14. Connecting rods 23 are arranged at the middle positions between the strip-shaped grooves 15 at the bottom of the top plate 14. An inner plate 24 is arranged at the bottom of the connecting rod 23. A support rod 25 is inserted through the middle of the inner plate 24. A fixing block 26 is arranged at the top of the support rod 25. A pyramid support end 27 is arranged at the bottom of the support rod 25. A support column 28 is arranged at the bottom of the pyramid support end 27. A gravity plate 29 is arranged at the bottom of the support column 28.

[0024] A bottom plate 30 is provided below the inner plate 24. A plurality of support plates 31 are provided on the top side of the bottom plate 30. The upper parts of the support plates 31 are all penetrated by ejector rods 32. Limiting disks II 33 are provided at the inner ends of the ejector rods 32. Limiting spheres 34 are provided on the sides of the limiting disks II 33 away from the ejector rods 32. Limiting cylinders 35 are provided on the ejector rods 32 inside the support plates 31. Limiting disks I 36 are provided on the sides of the limiting cylinders 35 away from the support plates 31. The ejector rods 32 penetrate through the limiting cylinders 35 and the limiting disks I 36. A second return spring 37 is sleeved on the ejector rods 32 between the limiting disks I 36 and the limiting disks II 33. The support column 28 penetrates through the bottom plate 30. A first return spring 38 is sleeved on the support column 28 between the top of the gravity plate 29 and the bottom surface of the bottom plate 30. The limiting spheres 34 are in contact with the side surfaces of the pyramid-shaped support ends 27. Cables 39 are provided at the tops of the hooks 12. The cables 39 penetrate through the bottom plate 30. The upper parts of the cables 39 penetrate through the inner plate 24. A set of winding disk supports 40 are provided on both sides of the top of the inner plate 24. Winding disks 41 are provided between the winding disk supports 40. The cables 39 are wound around the winding disks 41. One ends of the winding disks 41 are all connected to micro-drivers 42. The micro-drivers 42 are fixed at the top side of the inner plate 24 through driver mounting seats 43. A magnetic plate 44 is provided at the bottom of the third gear 19. An armature 45 that has a magnetic effect with the magnetic plate 44 is provided at the top of the fixed block 26. Friction strips are provided on the inner walls of the arc-shaped clamping plates 17. The gravity plate 29 is made of a magnetic material.

[0025] A through hole is provided in the middle of the inner plate 24, and the support rod 25 penetrates through the through hole. The fixed block 26 is provided on the top of the support rod 25. The fixed block 26 can move up and down under the top extension movement of the support rod 25. After the fixed block 26 moves upward, the armature 45 on the top surface hits the magnetic plate 44 provided at the bottom of the upper third gear 19. After a magnetic effect is generated between the magnetic plate 44 and the armature 45 and they attract each other, the side surface of the pyramid-shaped support end 27 at the bottom of the support rod 25 will slide around against the limiting spheres 34 in contact with the side, and then the ejector rod 32 will push against the inner wall of the arc-shaped clamping plate 17 covered on the outside. The arc-shaped clamping plate 17 clamps the lifted manhole cover, forming an outer clamping here. Then, after the ejector rod 32 pushes against the upper part of the inner wall of the arc-shaped clamping plate 17, the arc-shaped clamping plate 17 will have an additional internal support, and in this way, the overall stability of the arc-shaped clamping plate 17 will be improved. When extracting the manhole cover, the manhole cover is clamped by the arc-shaped clamping plate 17, and then as the inner ejector rod 32 pushes against the arc-shaped clamping plate 17, the arc-shaped clamping plate 17 will not shake during the extraction process.

[0026] The arc-shaped clamping plate 17 exactly covers both the inner plate 24 and the bottom plate 30 inside it. The arc-shaped clamping plate 17 is arranged on the top plate 14, and the bottom of the lifting sliding plate 9 is fixed on both sides of the top of the top plate 14. The side racks 8 on the corresponding sides of the two lifting sliding plates 9 are arranged at different positions, that is to say, one side rack 8 is higher than the other side rack 8.

[0027] Detailed usage method and function of this embodiment: During the construction of the municipal pipe well, when the manhole cover needs to be extracted, the device is erected on the pipe well. The telescopic movement is generated between the driving cylinder 4 and the air rod 5. The air rod 5 presses the U-shaped clamp head 6 downwards, and the internal gear one 7 will drive the side racks 8 engaged on both sides. According to the ground flatness around the pipe well, the rotation direction of the gear one 7 is adjusted to prompt the two balance support columns 13 to be adjusted according to the ground flatness around the pipe well, so as to ensure that the two balance support columns 13 can fully support the ground around the pipe well.

[0028] When the air rod 5 moves downwards, it presses the horizontal support auxiliary part 11 downwards. At the contact surface between the gravity plate 29 and the manhole cover surface, when the horizontal support auxiliary part 11 moves downwards, the gravity plate 29 presses the manhole cover, and the support column 28 passes through the bottom plate 30 and pushes the pyramid support end 27 upwards. At this time, the side inclined surface of the pyramid support end 27 will push the limiting sphere 34 to slide around, and then push the top rod 32 on the side to pass through the limiting disk one 36, the limiting cylinder 35 and the support plate 31, so that the outer end of the top rod 32 abuts against the upper part of the inner wall of the arc-shaped clamping plate 17 covered on the outside. Before this, the micro driver 42 is driven to operate, and the micro driver 42 drives the winding disk 41 to rotate. After the winding disk 41 rotates, the cable 39 wound on it will be loosened, and the cable 39 and the winding disk 41 always remain in a taut state. Among them, a reset component is arranged between the winding disk 41 and the winding disk support 40. This component is a conventional structure, such as a gyro shape, and can automatically return to the original state, so as to ensure that the cable 39 always remains in a taut state. When the cable 39 moves downwards, it presses the hook 12 to extend into the pipe well through two holes on the manhole cover, and then reversely tightens the cable 39 to prompt the hook 12 to expand and grasp the inner top wall of the manhole cover.

[0029] Since the device is installed on an external extraction device, when lifting upwards, the manhole cover will be lifted by the hook 12. Then, the driving motor 22 operates, the motor 22 drives the second gear 21 to rotate, and the second gear 22 drives the engaged third gear 19 to rotate. After the third gear 19 rotates, several arc-shaped grooves 20 provided on the upper part will drive the inserted limiting rod 18 to move. The limiting rod 18 drives the sliding plate 16 to slide around in the strip-shaped groove 15. The sliding plate 16 presses against the arc-shaped clamping plate 17 to expand around. When extracting the manhole cover, the driving third gear 19 rotates in the reverse direction, driving the arc-shaped clamping plates 17 that have expanded around to move towards the middle simultaneously to clamp the lifted manhole cover. When the gravity plate 29 contacts the manhole cover surface, under the downward pressure, the fixed block 26 passes through the inner plate 24 upwards. The armature 45 at the top of the fixed block 26 approaches the magnetic plate 44 above. After the magnetic effect generated between the magnetic plate 44 and the armature 45 attracts each other, the armature 45 and the magnetic plate 44 are in close contact. At this time, the extraction support rod 25 moves upwards, and the side inclined surface of the pyramid tip 27 presses the limiting sphere 34 to spread around. The ejector rod 32 presses against the upper part of the inner wall of the arc-shaped clamping plate 17 covered on the outside. In this way, the stability of the entire arc-shaped clamping plate 17 will be increased. When the manhole cover is lifted and transported upwards, the top surface will be pressed by the gravity plate 29, and the bottom of the manhole cover will be pulled by the hook 12. In this way, there will be a downward pressure and an upward pulling force on the manhole cover. At the same time, the surrounding arc-shaped clamping plates 17 are used to clamp the periphery, exerting force on the periphery, bottom, and lower part of the manhole cover, so as to clamp the manhole cover inside. When extracting and transporting, the shaking force generated by the manhole cover will be weakened, causing the shaking force generated during the extraction and transportation of the manhole cover to be dispersed to each component at the joints, thus maintaining the entire stable process during the extraction of the manhole cover.

[0030] Through the above specific embodiments, those skilled in the art of the described technical field can easily implement the present invention. However, it should be understood that the present invention is not limited to the above specific embodiments. Based on the disclosed embodiments, those skilled in the art of the described technical field can arbitrarily combine different technical features to implement different technical solutions.

Claims

1. A municipal public municipal pipe well construction auxiliary device, characterized in that: The invention comprises a set of support seats (1), wherein a symmetrical frame (2) is provided on the top of the support seat (1), a collar (3) is provided between the tops of the frame (2), a cylinder (4) is provided on the top of the collar (3), a matching gas rod (5) is provided inside the gas cylinder (4), the gas rod (5) penetrates the gas cylinder (4), a U-shaped clamp block head (6) is provided at the bottom of the gas rod (5), a gear (7) is provided inside the U-shaped clamp block head (6), and meshing side racks (8) are provided on both sides of the gear (7). A lifting slide plate (9) is provided on the side of the side rack (8) away from the gear one (7), and side plates (10) are provided on both sides of the lifting slide plate (9), and the side plates (10) are fixed to the upper part of the inner wall of the frame (2). A horizontal supporting auxiliary part (11) is provided at the bottom of the lifting slide plate (9), and a group of hooks (12) are provided on the horizontal supporting auxiliary part (11). Balance columns (13) are provided on both sides of the horizontal supporting auxiliary part (11) at the lower part of the outer side of the lifting slide plate (9).

2. A municipal public pipe well construction auxiliary device according to claim 1, characterized in that: The bottom of the U-shaped clamp block head (6) is provided with a notch, and the gear one (7) is fixed in the notch; The lifting slide plate (9) is provided with convex strips at the center of both sides thereof, and the inner wall center of the side plate (10) is provided with a sliding groove matching the convex strips at the center thereof.

3. A municipal public pipe well construction auxiliary device according to claim 1, characterized in that: The horizontal support auxiliary part (11) comprises a top plate (14), the bottom of the top plate (14) is evenly provided with strip grooves (15), the strip grooves (15) are of T-shaped structure, a slide plate (16) is provided in each of the strip grooves (15), the outer end of each of the slide plates (16) passes through the outer side of the strip groove (15), and an arc-shaped clamping plate (17) is provided at the outer end of each of the slide plates (16), and the arc-shaped clamping plates (17) are combined to form a circular structure.

4. A municipal public pipe well construction auxiliary device according to claim 3, characterized in that: The inner end of the bottom of the slide plate (16) is provided with a limiting rod (18), the limiting rod (18) passes through the bottom of the strip groove (15), the lower part of the limiting rod (18) is located below the top plate (14) and is provided with a gear three (19), the gear three (19) is provided with a plurality of arc grooves (20), the limiting rod (18) is inserted in the arc grooves (20), and the top center of the gear three (19) is movably connected to the bottom center of the top plate (14) through a shaft; A meshing gear 2 (21) is provided on one side of the gear 3 (19), a gear shaft is provided at the top center of the gear 2 (21), the gear shaft passes through the top plate (14), a motor (22) is provided on the top of the gear shaft, and the motor (22) is fixed on one side of the top of the top plate (14).

5. A municipal public pipe well construction auxiliary device according to claim 4, characterized in that: A connecting rod (23) is provided at the bottom of the top plate (14) at a middle position between the strip-shaped grooves (15), an inner plate (24) is provided at the bottom of the connecting rod (23), a supporting rod (25) is inserted in the middle of the inner plate (24), a fixing block (26) is provided at the top of the supporting rod (25), a pyramid supporting end (27) is provided at the bottom of the supporting rod (25), a supporting column (28) is provided at the bottom of the pyramid supporting end (27), and a gravity plate (29) is provided at the bottom of the supporting column (28).

6. A municipal public pipe well construction auxiliary device according to claim 5, characterized in that: A bottom plate (30) is provided below the inner plate (24), a plurality of support plates (31) are provided on the top side of the bottom plate (30), a push rod (32) is inserted into the upper part of each support plate (31), a second limiting plate (33) is provided at the inner end of each push rod (32), and a limiting ball (34) is provided on the side of each limit plate (33) away from the push rod (32); A limiting cylinder (35) is provided on the inner side of the support plate (31) and on the push rod (32); a limiting plate (36) is provided on the side of the limiting cylinder (35) away from the support plate (31); and the push rod (32) passes through the limiting cylinder (35) and the limiting plate (36); A second return spring (37) is sleeved on the push rod (32) between the first limit plate (36) and the second limit plate (33).

7. A municipal public pipe well construction auxiliary device according to claim 6, characterized in that: The support column (28) passes through the bottom plate (30), and a return spring (38) is sleeved on the support column (28) between the top of the gravity plate (29) and the bottom surface of the bottom plate (30); The limiting sphere (34) contacts the side surface of the pyramid branch end (27).

8. A municipal public pipe well construction auxiliary device according to claim 7, characterized in that: A cable (39) is provided at the top of each hook (12), the cable (39) passes through the bottom plate (30), and the upper part of the cable (39) passes through the inner plate (24); A group of winding disc supports (40) are provided on both sides of the top of the inner plate (24), and winding discs (41) are provided between the winding disc supports (40). The pull cable (39) is wound around the winding discs (41), and one end of the winding discs (41) is connected to a micro driver (42). The micro driver (42) is fixed to the top side of the inner plate (24) via a driver mounting seat (43).

9. A municipal public pipe well construction auxiliary device according to claim 7, characterized in that: A magnetic plate (44) is provided at the bottom of the gear three (19), and an armature (45) having a magnetic effect on the magnetic plate (44) is provided at the top of the fixed block (26); The inner wall of the arc-shaped clamping plate (17) is provided with a friction strip; The gravity plate (29) is made of magnetic material.

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