Municipal hoisting machine for well lid replacement

Abstract

The utility model relates to the technical field of municipal facility maintenance, and discloses a municipal hoisting machine for well lid replacement, which comprises a hoisting machine body. According to the hoisting machine for municipal well lid replacement, a telescopic air cylinder is started, a disc is driven to rotate downwards through work of the telescopic air cylinder, then a supporting rod is driven to move, then a limiting rod and a connecting shaft penetrate to the bottom of a well lid plate, then the telescopic air cylinder is closed, and then a pulling plate is held by hands to pull the outer side; then an inserting plate is separated from an inner cavity of a rotating block and an inner cavity of a supporting rod, then a connecting shaft is rotated by hand, then the rotating block is driven to rotate, a pulling plate is loosened, then a limiting rod is in a transverse state, then a telescopic air cylinder is started, and then the well lid plate is driven to move upwards, so that the effect of hoisting the well lid plate is achieved; and the problem that in the using process of an existing hoisting machine, due to the action of inertia force, a hoisted well lid shakes greatly can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal facility maintenance, in particular to a municipal manhole cover replacement hoisting machine. Background Art

[0002] Municipal facilities refer to various buildings, structures, equipment, urban roads, urban rail transit, water supply, drainage, gas, heat, landscaping, environmental sanitation, road lighting, industrial waste, medical waste, domestic waste treatment equipment, sites and other facilities and ancillary facilities within the planning area. Sewers are the main discharge route for urban sewage. The quality of sewers determines the safety of a city. Many cities have insufficient drainage capacity or are prone to blockage in their sewers.

[0003] The prior art publication number is CN 205709642 U, which is a sewer manhole cover lifting tool. The patented technology can lift the sewer manhole cover upwards by applying a lifting platform, a front leg, a steering rod, a ground wheel, a screw, a lifting turntable, a rear leg, a wire rope and a hook to the sewer manhole cover opening device, thereby reducing the labor intensity of manual labor, having a small size, being convenient for transportation, and having a simple structure and being easy to operate. The prior art publication number is CN 205709642 U, which is a sewer manhole cover lifting tool. The patented technology can lift the sewer manhole cover upwards by applying a lifting platform, a front leg, a steering rod, a ground wheel, a screw, a lifting turntable, a rear leg, a wire rope and a hook to the sewer manhole cover opening device, thereby reducing the labor intensity of manual labor, having a small size, being convenient for transportation, and having a simple structure and being easy to operate.

[0004] At present, the role of sewers in the urban sewage discharge process is extremely important. The quality of sewers determines the safety of a city. In many cities, the sewers have insufficient drainage or are easily blocked, which often brings a lot of inconvenience to people's lives. During the maintenance of the sewers, the sewer manhole covers need to be opened. The traditional way is to lift them up manually with steel bars. This method is very inefficient and has high labor intensity. In the process of replacing the manhole covers, a hoisting machine is often required. However, during the use of the existing hoisting machine, when the operator pushes the hoisting machine after the hoisting is completed, the hoisted manhole cover shakes greatly due to the effect of inertia, and then it is very easy to collide with the operator, which poses a threat to the health of the operator. Therefore, improvements are proposed to the hoisting machine.

[0005] In order to solve the above problems, we have made improvements and proposed a lifting machine for replacing municipal manhole covers. Utility Model Content

[0006] The purpose of the utility model is to provide a lifting machine for replacing a municipal manhole cover to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A lifting machine for replacing a municipal manhole cover comprises a lifting machine body, the lifting machine body comprises a top plate, four corners of the bottom of the top plate are fixedly connected with pillars, the bottom of the pillar is fixedly connected with a connecting rod, the bottom of the connecting rod is fixedly connected with a pulley, and a lifting mechanism is installed on the top of the top plate;

[0009] The lifting mechanism includes a telescopic cylinder, the bottom of the telescopic cylinder is fixedly connected to the top of the top plate, the output end of the telescopic cylinder passes through the bottom of the top plate and is fixedly connected to a disc, both sides of the bottom of the disc are fixedly connected to support rods, the bottom of the inner cavity of the support rod is movably connected to a rotating block, the bottom of the rotating block is fixedly connected to a connecting shaft, the bottom of the connecting shaft passes through the bottom of the support rod and is fixedly connected to a limiting rod, the top of the limiting rod is movably connected to a manhole cover, both sides of the inner cavity of the manhole cover are movably connected to the surface of the connecting shaft, the inner side of the support rod is fixedly connected to a bottom plate, the inner cavity of the bottom plate is movably connected to a rotating plate, the outer side of the rotating plate is fixedly connected to a plug plate, and the surfaces of the plug plate are plugged and connected to the inner cavities of the support rod and the rotating block.

[0010] As a further solution of the utility model: the inner cavity of the bottom plate is fixedly connected with a rotating rod, the surface of the rotating rod is movably connected to the inner cavity of the rotating plate, the top of the rotating plate is fixedly connected with a pull plate, the outer side of the pull plate is fixedly connected with a second spring, and the outer side of the second spring is fixedly connected to the inner side of the support rod.

[0011] As a further solution of the utility model: the surface of the output end of the telescopic cylinder is movably connected with a movable sleeve, and the movable sleeve is fixedly connected with positioning plates on all four sides, the inner cavity of the positioning plate is movably connected with a rotating sleeve one, the outer side of the rotating sleeve one is fixedly connected with a connecting column, the outer side of the connecting column is fixedly connected with a rotating sleeve two, the surface of the rotating sleeve two is movably connected with a positioning frame, the outer side of the positioning frame is fixedly connected with a fixed sleeve, and the inner cavity of the fixed sleeve is fixedly connected to the top of the support surface.

[0012] As a further solution of the utility model: the inner cavity of the positioning plate is fixedly connected with a rotating shaft, the surface of the rotating shaft is movably connected to the inner cavity of the rotating sleeve one, the inner cavity of the positioning frame is fixedly connected with a rotating column, and the surface of the rotating column is movably connected to the inner cavity of the rotating sleeve two.

[0013] As a further solution of the utility model: an anti-movement mechanism is installed at the bottom of the pillar surface, and the anti-movement mechanism includes a support frame, the inner cavity of the support frame is movably connected to the surface of the pillar, both sides of the inner cavity of the pillar are movably connected with plug rods, the surfaces of the plug rods are plug-connected to the two sides of the inner cavity of the support frame, the inner side of the plug rod is fixedly connected to a limiting block 1, the inner side of the limiting block 1 is fixedly connected to a spring 1, the inner side of the spring 1 is fixedly connected to the inner cavity of the pillar, and the bottom of the support frame is fixedly connected to an anti-slip pad.

[0014] As a further solution of the utility model: the surface of the pillar is fixedly connected to a fixed frame, the four corners of the bottom of the fixed frame are fixedly connected to guide rods, the surface of the guide rod is movably connected to the inner cavity of the support frame, and the bottom of the guide rod is fixedly connected to a limiting block 2.

[0015] As a further solution of the utility model: the top and bottom of both sides of the support frame are fixedly connected to the outer frame, the inner side of the outer frame is movably connected to the push rod, and the outer side of the push rod is fixedly connected to the connecting plate.

[0016] As a further solution of the utility model: a pull ring is fixedly connected to the outer side of the connecting disk, and the pull ring is arranged in an annular structure. A spring three is sleeved on the surface of the push rod, and the inner side of the spring three is fixedly connected to the inner cavity of the outer frame, and the outer side of the spring three is fixedly connected to the surface of the push rod.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model starts the telescopic cylinder, and the disc is driven to rotate downward by the operation of the telescopic cylinder, and then the support rod is driven to move, and then the connecting shaft is driven to move, and then the limiting rod is driven to move, and then the limiting rod and the connecting shaft are penetrated to the bottom of the well cover plate, and then the telescopic cylinder is closed, and then the pull plate is pulled outward by hand, and the rotating plate is driven to move by the movement of the pull plate, and then the plug plate is separated from the inner cavity of the rotating block and the support rod, and then the connecting shaft is rotated by hand, and then the rotating block is driven to rotate, and then the pull plate is released, and then the rotating plate is restored to its original position under the action of the spring 2, and then the limiting rod is in a horizontal state, and then the telescopic cylinder is started, and then the well cover plate is driven to move upward, so as to achieve the effect of lifting the well cover plate, and can solve the problem that in the use of the existing lifting machine, when the operator pushes the lifting machine after the lifting is completed, the lifted well cover shakes greatly due to the action of the inertia force, and then it is very easy to collide with the operator, and then threaten the health of the operator.

[0019] 2. The utility model provides a rotating rod so that the inner cavity of the rotating plate can rotate smoothly in the inner cavity of the bottom plate, thereby achieving the effect of adjusting the position of the limit rod. Through the setting of the pulling plate, it is more convenient for the operator to pull the rotating plate. Through the setting of the spring two, when the pulling plate moves, the spring two will be compressed, thereby absorbing the generated force. Further, when the pulling plate loses its force, the spring two will restore its deformation, thereby achieving the effect of plugging and fixing the rotating block in a static state. The output end of the telescopic cylinder is driven to move up and down through the work of the telescopic cylinder, and then the output end of the telescopic cylinder is driven to move in the inner cavity of the movable sleeve, and then the positioning plate is driven to move, and then the rotating sleeve one is rotated on the surface of the rotating shaft, and then the connecting column is moved, and then the rotating sleeve two is rotated on the surface of the rotating column, thereby achieving the effect of guiding the disc during the movement, and avoiding the disc from being offset during the movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a municipal manhole cover replacement lifting machine;

[0021] Figure 2 This is a schematic diagram of the structural connection of a disc in a lifting machine for replacing a municipal manhole cover;

[0022] Figure 3 A cross-sectional view of a support rod in a lifting machine for replacing a municipal manhole cover;

[0023] Figure 4 It is a schematic diagram of the disassembly and connection of a rotating shaft and a rotating sleeve 1 in a lifting machine for replacing a municipal manhole cover;

[0024] Figure 5 This is a schematic diagram of the structural connection of a pulley in a municipal manhole cover replacement hoist;

[0025] Figure 6 This is a schematic diagram of the structural connection of the support in a municipal manhole cover replacement lifting machine;

[0026] Figure 7 It is a cross-sectional view of a support frame in a lifting machine for replacing a municipal manhole cover;

[0027] Figure 8 It is a cross-sectional view of the outer frame of a municipal manhole cover replacement lifting machine.

[0028] In the figure: 1. Hoisting machine body; 101. Top plate; 102. Pillar; 103. Pulley; 104. Connecting rod; 105. Inserting rod; 106. Limiting block 1; 107. Spring 1; 2. Lifting mechanism; 201. Telescopic cylinder; 202. Disc; 203. Limiting rod; 204. Manhole cover; 205. Fixing sleeve; 206. Support rod; 207. Bottom plate; 208. Spring 2; 209. Pull plate; 210. Turn plate; 211. Inserting plate; 212. Connecting shaft ; 213, rotating block; 214, rotating rod; 215, positioning frame; 216, connecting column; 217, rotating shaft; 218, movable sleeve; 219, positioning plate; 220, rotating column; 221, rotating sleeve one; 222, rotating sleeve two; 3, anti-movement mechanism; 301, fixed frame; 302, guide rod; 303, limit block two; 304, anti-slip pad; 305, pull ring; 306, connecting plate; 307, outer frame; 308, support frame; 309, push rod; 310, spring three. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the implementation mode of the utility model clearer, the technical solution in the implementation mode of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation mode of the utility model. Obviously, the implementation mode described is a part of the implementation mode of the utility model, not all the implementation modes. Based on the implementation mode of the utility model, all other implementation modes obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example

[0031] See also Figure 1 , 2 , 3, 4, 5 and 6, a lifting machine for replacing a municipal manhole cover, comprising a lifting machine body 1, the lifting machine body 1 comprising a top plate 101, four corners of the bottom of the top plate 101 are fixedly connected to pillars 102, the bottom of the pillars 102 is fixedly connected to a connecting rod 104, the bottom of the connecting rod 104 is fixedly connected to a pulley 103, and a lifting mechanism 2 is installed on the top of the top plate 101;

[0032] The lifting mechanism 2 includes a telescopic cylinder 201, the bottom of which is fixedly connected to the top of the top plate 101, the output end of the telescopic cylinder 201 penetrates to the bottom of the top plate 101 and is fixedly connected to a disc 202, both sides of the bottom of the disc 202 are fixedly connected to support rods 206, the bottom of the inner cavity of the support rod 206 is movably connected to a rotating block 213, the bottom of the rotating block 213 is fixedly connected to a connecting shaft 212, and the bottom of the connecting shaft 212 penetrates to the support rod 2 The bottom of 06 is fixedly connected to the limit rod 203, the top of the limit rod 203 is movably connected to the manhole cover 204, both sides of the inner cavity of the manhole cover 204 are movably connected to the surface of the connecting shaft 212, the inner side of the support rod 206 is fixedly connected to the bottom plate 207, the inner cavity of the bottom plate 207 is movably connected to the rotating plate 210, the outer side of the rotating plate 210 is fixedly connected to the plug plate 211, and the surface of the plug plate 211 is plugged into the inner cavity of the support rod 206 and the rotating block 213.

[0033] The inner cavity of the bottom plate 207 is fixedly connected with a rotating rod 214, the surface of the rotating rod 214 is movably connected to the inner cavity of the rotating plate 210, the top of the rotating plate 210 is fixedly connected with a pull plate 209, the outer side of the pull plate 209 is fixedly connected with a spring 208, the outer side of the spring 208 is fixedly connected to the inner side of the support rod 206, and the inner cavity of the rotating plate 210 can be smoothly rotated in the inner cavity of the bottom plate 207 by setting the rotating rod 214, thereby achieving the effect of adjusting the position of the limit rod 203 The setting of the pull plate 209 makes it easier for the operator to pull the rotating plate 210. The setting of the spring 208 compresses the spring 208 when the pull plate 209 moves, thereby absorbing the energy of the generated force. Further, when the pull plate 209 loses its force, the spring 208 recovers its deformation, thereby achieving the effect of plugging and fixing the rotating block 213 in a static state. The surface of the output end of the telescopic cylinder 201 is movably connected with a movable sleeve 218. The four ends of the movable sleeve 218 are A positioning plate 219 is fixedly connected to Zhoujun, and a rotating sleeve 221 is movably connected to the inner cavity of the positioning plate 219. A connecting column 216 is fixedly connected to the outer side of the rotating sleeve 221, and a rotating sleeve 222 is fixedly connected to the outer side of the connecting column 216. A positioning frame 215 is movably connected to the surface of the rotating sleeve 222. A fixing sleeve 205 is fixedly connected to the outer side of the positioning frame 215. The inner cavity of the fixing sleeve 205 is fixedly connected to the top of the surface of the pillar 102. The output end of the telescopic cylinder 201 is driven to move up and down through the operation of the telescopic cylinder 201, and then the output end of the telescopic cylinder 201 is driven to move in the inner cavity of the movable sleeve 218, and then the positioning plate 219 is driven to move, and then the rotating sleeve 221 is rotated on the surface of the rotating shaft 217, and then the connecting column 216 is moved, and then the rotating sleeve 222 is rotated on the surface of the rotating column 220, so as to guide the disc 202 during the movement and avoid the disc 202 from deviating during the movement.

[0034] The inner cavity of the positioning plate 219 is fixedly connected with a rotating shaft 217, and the surface of the rotating shaft 217 is movably connected to the inner cavity of the rotating sleeve 221. The inner cavity of the positioning frame 215 is fixedly connected with a rotating column 220, and the surface of the rotating column 220 is movably connected to the inner cavity of the rotating sleeve 222. Through the setting of the rotating shaft 217, the rotating sleeve 221 can be smoothly rotated in the inner cavity of the positioning plate 219. Through the setting of the rotating column 220, the rotating sleeve 222 can be smoothly rotated in the inner cavity of the positioning frame 215, thereby achieving the effect of guiding and limiting the disc 202 in the moving state. The top and bottom of both sides of the support frame 308 are fixedly connected with the outer frame 307, and the inner side of the outer frame 307 is movably connected with a push rod 309, and the outer side of the push rod 309 is fixedly connected with a connecting disk 306. Through the setting of the push rod 309, it is more convenient for the operator to adjust the position of the support frame 308, and then To achieve the purpose of preventing the top plate 101 and the pillar 102 from sliding in the working state, a pull ring 305 is fixedly connected to the outer side of the connecting disk 306, and the pull ring 305 is arranged in an annular structure. A spring three 310 is sleeved on the surface of the push rod 309, and the inner side of the spring three 310 is fixedly connected to the inner cavity of the outer frame 307, and the outer side of the spring three 310 is fixedly connected to the surface of the push rod 309. Through the arrangement of the connecting disk 306, a connection effect can be played between the push rod 309 and the pull ring 305. Through the arrangement of the pull ring 305, it is easier for the operator to pull the push rod 309. Through the arrangement of the spring three 310, when the connecting disk 306 moves, the push rod 309 will be driven to move, thereby absorbing the generated force. Further, when the connecting disk 306 loses its force, the push rod 309 will return to its original position, thereby achieving the purpose of adjusting the position of the support frame 308.

[0035] See also Figure 1 , 2, 7 and 8, a municipal manhole cover replacement lifting machine, the bottom of the support 102 surface is installed with an anti-movement mechanism 3, the anti-movement mechanism 3 includes a support frame 308, the inner cavity of the support frame 308 is movably connected to the surface of the support 102, both sides of the inner cavity of the support 102 are movably connected with a plug rod 105, the surface of the plug rod 105 is plug-connected to the two sides of the inner cavity of the support frame 308, the inner side of the plug rod 105 is fixedly connected to a limit block 106, the inner side of the limit block 106 is fixedly connected to a spring 107, The inner side of the spring 107 is fixedly connected to the inner cavity of the pillar 102, and the bottom of the support frame 308 is fixedly connected with the anti-skid pad 304. When the top plate 101 reaches the specified position, the pull ring 305 is pushed inward by hand, and the movement of the pull ring 305 drives the connecting plate 306 to move, and then drives the push rod 309 to move, so that the spring 310 is compressed, and then the push rod 309 moves to push the insertion rod 105 to move inward, and then the hand pulls the support frame 308 downward. , and then the support frame 308 is made to slide on the surface of the guide rod 302, and then the anti-skid pad 304 is driven to move, so as to achieve the function of supporting and fixing the top plate 101 and the pillar 102 in the working state, and prevent the top plate 101 and the pillar 102 from sliding in the hoisting state. The surface of the pillar 102 is fixedly connected with the fixed frame 301, and the four corners of the bottom of the fixed frame 301 are fixedly connected with the guide rod 302. The surface of the guide rod 302 is movably connected to the inner cavity of the support frame 308, and the bottom of the guide rod 302 is fixedly connected with the limiting block 2 303. Through the setting of the fixed frame 301, the function of supporting and fixing the guide rod 302 in the working state is achieved. Through the setting of the guide rod 302, the effect of guiding the support frame 308 in the moving state is achieved. Through the setting of the limiting block 2 303, the function of limiting the support frame 308 during the movement is achieved, and the guide rod 302 is prevented from falling off from the inner cavity of the support frame 308 during the movement.

[0036] The working principle of the utility model is: first, the top plate 101 is pushed by hand, and then the pillar 102 is moved, and then the connecting rod 104 is moved, and then the pulley 103 is rotated, and then the top plate 101 is placed in the specified position, and the pull ring 305 is pushed inward by hand, and the connection plate 306 is moved by the movement of the pull ring 305, and then the push rod 309 is moved, and then the spring 310 is compressed, and then the insertion rod 105 is pushed inward by the movement of the push rod 309, and then the support frame 308 is pulled downward by hand, and then the support frame 308 is moved on the guide rod 302. The surface slides, and then drives the anti-skid pad 304 to move, so as to support and fix the top plate 101 and the pillar 102 in the working state, and prevent the top plate 101 and the pillar 102 from sliding in the hoisting state. Secondly, by starting the telescopic cylinder 201, the disc 202 is driven to rotate downward through the operation of the telescopic cylinder 201, and then the support rod 206 is driven to move, and then the connecting shaft 212 is driven to move, and then the limiting rod 203 is driven to move, and then the limiting rod 203 and the connecting shaft 212 are penetrated to the bottom of the manhole cover 204, and then the telescopic cylinder 201 is closed. Then the hand pulls the pull plate 209 outward, and the movement of the pull plate 209 drives the rotating plate 210 to move, and then the plug plate 211 is separated from the inner cavity of the rotating block 213 and the support rod 206, and then the hand rotates the connecting shaft 212, and then drives the rotating block 213 to rotate, and then releases the pull plate 209, and then under the action of the spring 208, the rotating plate 210 is restored to its original position, and then the plug plate 211 is plugged into the inner cavity of the rotating block 213, and then the position of the connecting shaft 212 is changed, and then the limit rod 203 is in a horizontal state, and then the telescopic cylinder 201 is started, and then the manhole cover 204 is driven to move upward , so as to achieve the effect of lifting the manhole cover 204, and finally, the output end of the telescopic cylinder 201 is driven to move up and down through the work of the telescopic cylinder 201, and then the output end of the telescopic cylinder 201 is driven to move in the inner cavity of the movable sleeve 218, and then the positioning plate 219 is driven to move, and then the rotating sleeve 1 221 is rotated on the surface of the rotating shaft 217, and then the connecting column 216 is moved, and then the rotating sleeve 222 is rotated on the surface of the rotating column 220, so as to achieve the effect of guiding the disc 202 during the movement process, and avoid the disc 202 from being offset during the movement.

[0037] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A municipal manhole cover replacement lifting machine, comprising a lifting machine body (1), characterized in that: The lifting machine body (1) comprises a top plate (101), the four corners of the bottom of the top plate (101) are fixedly connected to pillars (102), the bottom of the pillars (102) are fixedly connected to connecting rods (104), the bottom of the connecting rods (104) are fixedly connected to pulleys (103), and a lifting mechanism (2) is installed on the top of the top plate (101); The lifting mechanism (2) comprises a telescopic cylinder (201), the bottom of the telescopic cylinder (201) is fixedly connected to the top of the top plate (101), the output end of the telescopic cylinder (201) passes through the bottom of the top plate (101) and is fixedly connected to a disc (202), both sides of the bottom of the disc (202) are fixedly connected to support rods (206), the bottom of the inner cavity of the support rod (206) is movably connected to a rotating block (213), the bottom of the rotating block (213) is fixedly connected to a connecting shaft (212), the bottom of the connecting shaft (212) passes through the support rod ( The bottom of the support rod (206) is fixedly connected to a limiting rod (203), the top of the limiting rod (203) is movably connected to a manhole cover plate (204), both sides of the inner cavity of the manhole cover plate (204) are movably connected to the surface of the connecting shaft (212), the inner side of the support rod (206) is fixedly connected to a bottom plate (207), the inner cavity of the bottom plate (207) is movably connected to a rotating plate (210), the outer side of the rotating plate (210) is fixedly connected to an insert plate (211), and the surface of the insert plate (211) is plugged and connected to the inner cavity of the support rod (206) and the rotating block (213).

2. A municipal manhole cover replacement lifting machine according to claim 1, characterized in that: The inner cavity of the bottom plate (207) is fixedly connected to a rotating rod (214), the surface of the rotating rod (214) is movably connected to the inner cavity of the rotating plate (210), the top of the rotating plate (210) is fixedly connected to a pulling plate (209), the outer side of the pulling plate (209) is fixedly connected to a spring 2 (208), and the outer side of the spring 2 (208) is fixedly connected to the inner side of the support rod (206).

3. A municipal manhole cover replacement lifting machine according to claim 1, characterized in that: The surface of the output end of the telescopic cylinder (201) is movably connected to a movable sleeve (218), and the movable sleeve (218) is fixedly connected to positioning plates (219) on all four sides. The inner cavity of the positioning plate (219) is movably connected to a rotating sleeve 1 (221), and the outer side of the rotating sleeve 1 (221) is fixedly connected to a connecting column (216), and the outer side of the connecting column (216) is fixedly connected to a rotating sleeve 2 (222). The surface of the rotating sleeve 2 (222) is movably connected to a positioning frame (215), and the outer side of the positioning frame (215) is fixedly connected to a fixed sleeve (205), and the inner cavity of the fixed sleeve (205) is fixedly connected to the top of the surface of the support (102).

4. A municipal manhole cover replacement lifting machine according to claim 3, characterized in that: The inner cavity of the positioning plate (219) is fixedly connected to a rotating shaft (217), and the surface of the rotating shaft (217) is movably connected to the inner cavity of the rotating sleeve (221). The inner cavity of the positioning frame (215) is fixedly connected to a rotating column (220), and the surface of the rotating column (220) is movably connected to the inner cavity of the rotating sleeve (222).

5. The municipal manhole cover replacement lifting machine according to claim 1, characterized in that: An anti-movement mechanism (3) is installed at the bottom of the surface of the pillar (102), and the anti-movement mechanism (3) includes a support frame (308), the inner cavity of the support frame (308) is movably connected to the surface of the pillar (102), both sides of the inner cavity of the pillar (102) are movably connected with an insertion rod (105), the surface of the insertion rod (105) is plug-connected to the two sides of the inner cavity of the support frame (308), the inner side of the insertion rod (105) is fixedly connected to a limit block (106), the inner side of the limit block (106) is fixedly connected to a spring (107), the inner side of the spring (107) is fixedly connected to the inner cavity of the pillar (102), and the bottom of the support frame (308) is fixedly connected to an anti-slip pad (304).

6. A municipal manhole cover replacement lifting machine according to claim 5, characterized in that: The surface of the pillar (102) is fixedly connected to a fixing frame (301), the four corners of the bottom of the fixing frame (301) are fixedly connected to guide rods (302), the surface of the guide rod (302) is movably connected to the inner cavity of the support frame (308), and the bottom of the guide rod (302) is fixedly connected to a second limiting block (303).

7. A municipal manhole cover replacement lifting machine according to claim 5, characterized in that: The top and bottom of both sides of the support frame (308) are fixedly connected to the outer frame (307), the inner side of the outer frame (307) is movably connected to the push rod (309), and the outer side of the push rod (309) is fixedly connected to the connection plate (306).

8. A municipal manhole cover replacement lifting machine according to claim 7, characterized in that: A pull ring (305) is fixedly connected to the outer side of the connecting disk (306), and the pull ring (305) is arranged in an annular structure. A spring three (310) is sleeved on the surface of the push rod (309), and the inner side of the spring three (310) is fixedly connected to the inner cavity of the outer frame (307), and the outer side of the spring three (310) is fixedly connected to the surface of the push rod (309).

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