A displacement monitoring device for municipal road network construction

Abstract

The application relates to the technical field of displacement monitoring devices, and discloses a displacement monitoring device for municipal road network construction, which comprises a monitor, a mounting ring, three supporting legs hinged to the outer wall of the mounting ring, a self-leveling assembly arranged on the mounting ring, a half-sphere and a sliding ring, an anti-falling-off assembly arranged on the mounting ring and used for preventing the mounting seat from falling off, and a lubricating assembly arranged on the mounting ring and used for improving the lubricity between the half-sphere and the sliding ring. Through the arrangement of the self-leveling assembly, after the three supporting legs are unfolded, the storage cylinder can automatically move downward and be separated from the weight, the weight pulls the half-sphere through the pull rope by using gravity, the half-sphere keeps the monitor horizontal by using gravity, and the operation time of manually leveling the monitor by the staff is reduced.

Description

Technical Field

[0001] This invention relates to the field of displacement monitoring device technology, and specifically to a displacement monitoring device for municipal road network construction. Background Technology

[0002] As a core infrastructure for urban transportation, the construction quality and operational safety of municipal road networks directly affect the efficiency of urban operations. During the construction and use phases of municipal road networks, roadbed or pavement displacement is prone to occur due to factors such as changes in geological conditions, disturbances from surrounding construction, and vehicle loads. Therefore, it is necessary to regularly monitor the deformation of the road network structure in real time through displacement monitoring. Settlement is an important manifestation of road network displacement. Excessive settlement can lead to problems such as pavement cracking and reduced pavement smoothness, seriously affecting the functionality and safety of the road. Therefore, workers need to regularly monitor road settlement during construction and subsequent road use. Currently, there are many types of monitoring instruments used for settlement monitoring, including leveling instruments and settlement monitoring instruments. These instruments can measure and collect road network settlement data, providing data support for road network safety assessment and maintenance.

[0003] However, the existing technology has the following problems:

[0004] When using existing monitoring instruments to monitor road settlement, it is usually necessary to set up monitoring instruments at multiple locations for measurement. However, since existing monitoring instruments usually need to be manually adjusted to a horizontal state during installation to ensure the accuracy of the measurement data, staff need to frequently manually level the monitoring instruments during actual operations, which consumes a lot of working time and affects the efficiency of road settlement monitoring. Summary of the Invention

[0005] The purpose of this invention is to provide a displacement monitoring device for municipal road network construction in order to solve the above-mentioned problems and overcome the defects of the prior art, as detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention provides a displacement monitoring device for municipal road network construction, including a monitoring instrument and a mounting ring. Three legs are hinged to the outer wall of the mounting ring. A self-leveling assembly is provided on the mounting ring, comprising a sliding ring and a hemisphere. The sliding ring is installed inside the mounting ring, and a mounting base is connected to the top surface of the hemisphere. The monitoring instrument is mounted on the mounting base, and the hemisphere is movably connected to the sliding ring. A pull rope is connected to the bottom of the hemisphere, and a counterweight is connected to the end of the pull rope away from the hemisphere. The hemisphere can slide freely on the sliding ring using the weight of the counterweight to maintain the levelness of the mounting base. An anti-detachment assembly is provided on the mounting ring to prevent the mounting base from detaching. A lubrication assembly is provided on the mounting ring to improve the lubrication between the hemisphere and the sliding ring.

[0008] Preferably, the self-leveling assembly further includes a protective cover and a storage cylinder. The protective cover is installed on the bottom surface of the sliding ring. Each of the three legs is hinged with a first connecting rod. The end of each of the three first connecting rods away from the legs is hinged to the storage cylinder. When the three legs are opened, the storage cylinder can be moved downward by the three first connecting rods. The storage cylinder is located directly below the counterweight.

[0009] Preferably, the anti-detachment assembly includes a cam, three slide rods, and three second connecting rods. The cam is mounted on the outer wall of the mounting base. The three slide rods are vertically slidably connected to the mounting ring. A latch is connected to the top of each slide rod, and a sliding shaft is connected to the bottom of each slide rod. Two springs are connected to each slide rod, and the ends of the springs away from the slide rods are connected to the mounting ring. The three second connecting rods are respectively hinged to three support legs.

[0010] Preferably, the three sliding shafts are in contact with the three second connecting rods respectively, and the three latches are all located above the cam. When the legs are separated, the sliding shafts can be moved upward by the second connecting rods.

[0011] Preferably, the protective cover is provided with four display components for displaying the tilt angle of the mounting ring. The four display components are arranged in a circumferential array on the protective cover. Each display component includes a rotating rod, a connecting rod, a pointer, and a dial. The rotating rod is hinged to the inner wall of the protective cover, the connecting rod is connected to the rotating rod, the pointer is connected to the end of the connecting rod away from the rotating rod, and the dial is connected to the outer wall of the protective cover.

[0012] Preferably, the end of the rotating rod away from the connecting rod is in contact with the counterweight. When the counterweight swings, it can drive the rotating rod to swing. When the rotating rod swings, it can drive the pointer to swing through the connecting rod. The dial is provided with a scale. After the pointer swings, it can point to the tilt angle of the current mounting ring on the dial.

[0013] Preferably, the lubrication assembly includes three liquid boxes, three slots are provided between the mounting ring and the sliding ring, the three liquid boxes are respectively installed in the three slots on the mounting ring, an atomizing nozzle is installed on the top of the liquid box, an air bladder is installed on the bottom of the liquid box, an air pipe is connected between the air bladder and the liquid box, and a protruding rod is connected to each of the three sliding shafts.

[0014] Preferably, the three protruding rods squeeze the three airbags respectively when they move upward, and the three atomizing nozzles are all facing the contact area between the hemisphere and the sliding ring.

[0015] Preferably, an extension rod is slidably connected to the support leg, and an adjustment screw is provided between the extension rod and the support leg.

[0016] The beneficial effects are:

[0017] 1. The displacement monitoring device for municipal road network construction, through the setting of the self-leveling component, allows the storage cylinder to automatically move down and detach from the counterweight after the three outriggers are extended. This allows the counterweight to use gravity to pull the hemisphere through the rope, thereby achieving the technical effect of the hemisphere using gravity to keep the monitoring instrument level. This reduces the operation time of manual leveling of the monitoring instrument by the staff, thereby improving the efficiency of setting up the monitoring instrument and speeding up the monitoring operation. When the three outriggers are retracted, the storage cylinder can move up and wrap around the counterweight, which protects and limits the counterweight, preventing the counterweight from shaking or colliding.

[0018] 2. The displacement monitoring device for municipal road network construction, through the setting of anti-detachment components, enables the three latches to hold the cam when the three legs are not deployed, thereby maintaining the stability of the hemisphere and the mounting base. When the three legs are deployed, the three latches can detach from the cam, avoiding the latches from obstructing the self-adjusting of the hemisphere and the mounting base.

[0019] 3. The displacement monitoring device for municipal road network construction, through the setting of the display component, enables the rotating rod in the tilt direction of the installation ring to swing in cooperation with the counterweight when the installation ring is tilted. This swings the pointer on the scale through the connecting rod, allowing the staff to determine the approximate tilt direction and tilt angle of the installation ring by observing the scale displayed by the moving pointer.

[0020] 4. The displacement monitoring device for municipal road network construction, through the setting of the lubrication component, enables three atomizing nozzles to simultaneously spray dry lubricant on the contact area between the hemisphere and the sliding ring after the three outriggers are deployed. This further reduces the friction between the hemisphere and the sliding ring, minimizes the impact of friction on the adaptive leveling of the hemisphere, and avoids the increase in friction between the hemisphere and the sliding ring after long-term use, which would affect the leveling accuracy. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the self-leveling component structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the hemispherical structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the storage tube structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the anti-fall-off component structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the slide bar structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the display component structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the dial structure of the present invention;

[0030] Figure 9 This is a schematic diagram of the lubrication assembly structure of the present invention;

[0031] Figure 10 This is a schematic diagram of the liquid box structure of the present invention;

[0032] Figure 11 This is a schematic diagram of the airbag structure of the present invention.

[0033] The annotations in the attached figures are explained as follows:

[0034] 1. Mounting ring; 2. Support leg; 3. Extension rod; 4. Monitoring instrument;

[0035] 5. Self-leveling component; 51. Sliding ring; 52. Hemisphere; 53. Mounting base; 54. Pull rope; 55. Counterweight; 56. Protective cover; 57. First connecting rod; 58. Storage tube;

[0036] 6. Anti-fall-off component; 61. Cam; 62. Slide rod; 63. Buckle rod; 64. Spring; 65. Slide shaft; 66. Second link;

[0037] 7. Display component; 71. Rotating lever; 72. Connecting lever; 73. Pointer; 74. Dial;

[0038] 8. Lubrication components; 81. Liquid tank; 82. Atomizing nozzle; 83. Airbag; 84. Air tube; 85. Protruding rod. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0040] One embodiment of the present invention is as follows:

[0041] Please see Figure 1 - Figure 6 A displacement monitoring device for municipal road network construction includes a monitoring instrument 4, which measures road settlement. The monitoring instrument 4 has three leveling screws for fine-tuning the levelness. The monitoring instrument 4 is existing technology, and its specific structure and working principle will not be described in detail here. It also includes a mounting ring 1, with three support legs 2 hinged to the outer wall of the mounting ring 1. An extension rod 3 is slidably connected to the support legs 2. An adjusting screw is provided between the extension rod 3 and the support legs 2. When setting up the monitoring instrument 4, the three support legs 2 are first spread out, and the adjusting screw is threaded onto the extension rod 3. The end of the adjusting screw abuts against the support leg 2. After the adjusting screw is loosened, the support leg 2 can be manually slid to adjust the erection height. After adjustment, the adjusting screw is tightened so that the adjusting screw abuts against the support leg 2. At this time, the support leg 2 is temporarily fixed and maintains the current state. The bottom of the support leg 2 has a pointed tip, which is easy to insert into the soil to improve the erection stability.

[0042] Furthermore, a self-leveling component 5 is provided on the mounting ring 1. The self-leveling component 5 includes a sliding ring 51 and a hemisphere 52. The sliding ring 51 is installed inside the mounting ring 1. A mounting base 53 is connected to the top surface of the hemisphere 52. The monitoring instrument 4 is installed on the mounting base 53. The hemisphere 52 is movably connected to the sliding ring 51. A pull rope 54 is connected to the bottom of the hemisphere 52. A counterweight 55 is connected to the end of the pull rope 54 away from the hemisphere 52. The hemisphere 52 can slide freely on the sliding ring 51 using the gravity of the counterweight 55 to maintain the levelness of the mounting base 53. The hemisphere 52 is detachable. The friction between the hemisphere 52 and the sliding ring 51 is low, making the hemisphere 52 detachable. 2. Under the influence of gravity, it will slide freely on the sliding ring 51 to maintain its center of gravity stability. When the three support legs 2 are extended, the weight 55 falls and applies a pulling force to the hemisphere 52 through the pull rope 54, so that when the mounting ring 1 is tilted, the connection part between the hemisphere 52 on the sliding ring 51 and the pull rope 54 is always directly below the center of gravity of the hemisphere 52. Therefore, when the connection part between the hemisphere 52 and the pull rope 54 is directly below the center of gravity of the hemisphere 52, the top surface of the mounting base 53 on the hemisphere 52 can remain horizontal, and the monitoring instrument 4 on the mounting base 53 is also horizontal. The monitoring instrument 4 is connected to the mounting base 53 by bolts and can be disassembled.

[0043] In addition, the self-leveling assembly 5 also includes a protective cover 56 and a storage tube 58. The protective cover 56 is installed on the bottom surface of the sliding ring 51. Each of the three support legs 2 is hinged with a first connecting rod 57. The ends of the three first connecting rods 57 away from the support legs 2 are hinged to the storage tube 58. When the three support legs 2 are extended, the three first connecting rods 57 can drive the storage tube 58 downwards, placing it directly below the counterweight 55. When the three support legs 2 are not extended, the storage tube 58 wraps around and lifts the counterweight 55, causing the pull rope 54 to bend. At this time, the bottom of the protective cover 56 fits into the top of the storage tube 58, allowing the counterweight 55 to be wrapped and protected. After the three support legs 2 are extended, the three support legs 2, through the three first connecting rods 57, drive the storage tube 58 downwards, causing the storage tube 58 to detach from the counterweight 55, allowing the counterweight 55 to begin to move. The three legs 2 descend and pull the hemisphere 52 through the pull rope 54. When the three legs 2 approach each other, the three first connecting rods 57 can drive the storage cylinder 58 to move upward, so that the storage cylinder 58 contacts and wraps the weight 55 again. Through the setting of the self-leveling component 5, after the staff unfolds the three legs 2, the storage cylinder 58 can automatically move downward and detach from the weight 55, so that the weight 55 uses gravity to pull the hemisphere 52 through the pull rope 54, thereby achieving the technical effect of the hemisphere 52 using gravity to keep the monitoring instrument 4 horizontal. This reduces the operation time of the staff manually leveling the monitoring instrument 4, thereby improving the efficiency of setting up the monitoring instrument 4 and speeding up the monitoring operation. After the three legs 2 are retracted, the storage cylinder 58 can move upward and wrap the weight 55, which plays a role in protecting and limiting the weight 55, preventing the weight 55 from shaking or colliding.

[0044] In addition, the mounting ring 1 is equipped with an anti-detachment component 6 to prevent the mounting base 53 from falling off. The anti-detachment component 6 includes a cam 61, three sliding rods 62, and three second connecting rods 66. The cam 61 is installed on the outer wall of the mounting base 53. The three sliding rods 62 are vertically slidably connected to the mounting ring 1. The top of the sliding rod 62 is connected to a latch 63, and the bottom of the sliding rod 62 is connected to a sliding shaft 65. Two springs 64 are connected to the sliding rod 62. The end of the spring 64 away from the sliding rod 62 is connected to the mounting ring 1. The three second connecting rods 66 are respectively hinged to the three support legs 2. The three sliding shafts 65... Each of the three latches 63 contacts one of the three second connecting rods 66, and all three latches 63 are located above the cam 61. When the outriggers 2 are separated, the second connecting rods 66 can drive the sliding shaft 65 to move upward. The two springs 64 on the sliding rod 62 remain in a contracted state, so the two springs 64 can continuously apply a downward force to the sliding rod 62. Therefore, before the three outriggers 2 are extended, the three latches 63 on the three sliding rods 62 can contact the cam 61 and apply a downward force to the cam 61, thereby achieving the technical effect of the three latches 63 locking the cam 61. The cam 61 and the mounting base 53... When the connecting cam 61 is engaged, it transmits force to the mounting base 53, causing the hemisphere 52 at the bottom of the mounting base 53 to exert a downward force on the sliding ring 51. This achieves the technical effect of maintaining the stability of the hemisphere 52 and the mounting base 53, preventing the hemisphere 52 from wobbling or detaching from the sliding ring 51. After the three support legs 2 are deployed, they respectively drive the three second connecting rods 66 to tilt upwards. When the three second connecting rods 66 tilt upwards, they respectively contact the three sliding shafts 65 and drive the three sliding shafts 65 to move upwards. When the sliding shafts 65 move upwards, they drive the sliding rods connected to them. The upward movement of 62 causes the latches 63 on the three sliding rods 62 to move upward simultaneously. After the three latches 63 move upward, they disengage from the cam 61 and maintain a certain distance, so as to avoid the latches 63 obstructing the self-adaptive leveling of the hemisphere 52 and the mounting base 53. Through the setting of the anti-drop component 6, the three latches 63 can hold the cam 61 when the three legs 2 are not unfolded, thereby maintaining the stability of the hemisphere 52 and the mounting base 53. When the three legs 2 are unfolded, the three latches 63 can disengage from the cam 61, so as to avoid the latches 63 obstructing the self-adaptive leveling of the hemisphere 52 and the mounting base 53.

[0045] Based on the above embodiments, another embodiment of the present invention is as follows:

[0046] Please see Figure 1 , Figure 7 - Figure 8The protective cover 56 is equipped with four display components 7 for displaying the tilt angle of the mounting ring 1. The four display components 7 are arranged in a circular array on the protective cover 56. Each display component 7 includes a rotating rod 71, a connecting rod 72, a pointer 73, and a scale 74. The rotating rod 71 is hinged to the inner wall of the protective cover 56, the connecting rod 72 is connected to the rotating rod 71, the pointer 73 is connected to the end of the connecting rod 72 away from the rotating rod 71, and the scale 74 is connected to the outer wall of the protective cover 56. The end of the rotating rod 71 away from the connecting rod 72 is in contact with a counterweight 55. When the counterweight 55 swings, it can drive the rotating rod 71 to swing. When the rotating rod 71 swings, it can drive the pointer 73 to swing through the connecting rod 72. The scale 74 has graduations, and after the pointer 73 swings, it can point to the current tilt angle of the mounting ring 1 on the scale 74. When the mounting ring 1 is being erected... When the ring 1 tilts, the sliding ring 51 and its protective cover 56 below it also tilt. The weight 55 swings due to its gravity, keeping the pull rope 54 in a vertical state. When the weight 55 swings, it pushes the rotating rod 71 in its swing direction, causing the rotating rod 71 to swing and drive the pointer 73 to move on the scale 74 through the connecting rod 72. The scale on the scale 74 can be converted to display the current tilt angle of the mounting ring 1. By setting the display component 7, when the mounting ring 1 tilts, the rotating rod 71 in the tilt direction of the mounting ring 1 can swing in cooperation with the weight 55, and then drive the pointer 73 to move on the scale 74 through the connecting rod 72. This allows the operator to judge the approximate tilt direction and tilt angle of the mounting ring 1 by observing the scale displayed by the moving pointer 73.

[0047] Based on the above embodiments, another embodiment of the present invention is as follows:

[0048] Please see Figure 1 , Figure 9 - Figure 11A lubrication assembly 8 is provided on the mounting ring 1 to improve the lubrication between the hemisphere 52 and the sliding ring 51. The lubrication assembly 8 includes three liquid boxes 81. Three slots are provided between the mounting ring 1 and the sliding ring 51. The three liquid boxes 81 are respectively installed in the three slots on the mounting ring 1. An atomizing nozzle 82 is installed on the top of the liquid box 81, and an air bladder 83 is installed on the bottom of the liquid box 81. An air pipe 84 connects the air bladder 83 and the liquid box 81. A protruding rod 85 is connected to each of the three sliding shafts 65. When the three protruding rods 85 move upward, they respectively... When the three airbags 83 are compressed, the three atomizing nozzles 82 all face the contact area between the hemisphere 52 and the sliding ring 51. The liquid box 81 contains dry lubricant. A one-way valve is installed inside the connection between the air tube 84 and the liquid box 81. A one-way airflow channel is formed between the airbags 83, the air tube 84, and the liquid box 81. The dry lubricant in the liquid box 81 is blocked by the one-way valve in the air tube 84 and will not flow back into the airbags 83 through the air tube 84. When the airbags 83 are compressed, they can compress the air inside them, thus compressing the air inside the airbags 83. The air then enters the liquid box 81 through the trachea 84. The airbag 83 is equipped with a one-way air inlet. When the airbag 83 resets, air is replenished through the one-way air inlet. When the airbag 83 is compressed, the one-way air inlet does not discharge gas. After the three support legs 2 unfold, the three sliding shafts 65 move upwards, driving the three protruding rods 85 upwards. This causes the three protruding rods 85 to compress the three airbags 83 respectively, allowing the three airbags 83 to inject air into the three liquid boxes 81 through the trachea 84. This causes the three liquid boxes 81 to release their internal dry air through positive pressure. Dry lubricant is sprayed onto the contact area between the hemisphere 52 and the sliding ring 51 through the atomizing nozzle 82. With the lubrication assembly 8, after the three legs 2 are deployed, the three atomizing nozzles 82 can simultaneously spray dry lubricant onto the contact area between the hemisphere 52 and the sliding ring 51, further reducing the friction between the hemisphere 52 and the sliding ring 51, minimizing the impact of friction on the adaptive leveling of the hemisphere 52, and preventing the friction between the hemisphere 52 and the sliding ring 51 from increasing and affecting the leveling accuracy after long-term use.

[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A displacement monitoring device for municipal road network construction, comprising a monitoring instrument (4), characterized in that: It also includes a mounting ring (1), the outer wall of which is hinged with three legs (2); The mounting ring (1) is provided with a self-leveling component (5), which includes a sliding ring (51) and a hemisphere (52). The sliding ring (51) is installed on the inner side of the mounting ring (1), and the top surface of the hemisphere (52) is connected to a mounting base (53). The monitoring instrument (4) is installed on the mounting base (53). The hemisphere (52) is movably connected to the sliding ring (51). The bottom of the hemisphere (52) is connected to a pull rope (54). The end of the pull rope (54) away from the hemisphere (52) is connected to a counterweight (55). The hemisphere (52) can slide freely on the sliding ring (51) using the weight of the counterweight (55) to maintain the levelness of the mounting base (53). The mounting ring (1) is provided with an anti-detachment component (6) to prevent the mounting base (53) from falling off; The mounting ring (1) is provided with a lubrication assembly (8) to improve the lubrication between the hemisphere (52) and the sliding ring (51); The self-leveling assembly (5) also includes a protective cover (56) and a storage tube (58). The protective cover (56) is installed on the bottom surface of the sliding ring (51). The three legs (2) are respectively hinged with first connecting rods (57). The ends of the three first connecting rods (57) away from the legs (2) are all hinged to the storage tube (58). When the three legs (2) are opened, the storage tube (58) can be driven to move down by the three first connecting rods (57). The storage tube (58) is located directly below the counterweight (55). The anti-fall-off component (6) includes a cam (61), three slide rods (62) and three second connecting rods (66). The cam (61) is installed on the outer wall of the mounting base (53). The three slide rods (62) are vertically slidably connected to the mounting ring (1). The top of the slide rod (62) is connected to a buckle (63), and the bottom of the slide rod (62) is connected to a sliding shaft (65). Two springs (64) are connected to the slide rod (62). The end of the spring (64) away from the slide rod (62) is connected to the mounting ring (1). The three second connecting rods (66) are respectively hinged to the three support legs (2). The three sliding shafts (65) are in contact with the three second connecting rods (66) respectively, and the three buckles (63) are all located above the cam (61). When the support leg (2) is separated, it can use the second connecting rod (66) to drive the sliding shaft (65) to move upward.

2. The displacement monitoring device for municipal road network construction according to claim 1, characterized in that: The protective cover (56) is provided with four display components (7) for displaying the tilt angle of the mounting ring (1). The four display components (7) are arranged in a circular array on the protective cover (56). Each display component (7) includes a rotating rod (71), a connecting rod (72), a pointer (73), and a dial (74). The rotating rod (71) is hinged to the inner wall of the protective cover (56). The connecting rod (72) is connected to the rotating rod (71). The pointer (73) is connected to the end of the connecting rod (72) away from the rotating rod (71). The dial (74) is connected to the outer wall of the protective cover (56).

3. The displacement monitoring device for municipal road network construction according to claim 2, characterized in that: The end of the rotating rod (71) away from the connecting rod (72) is in contact with the weight (55). When the weight (55) swings, it can drive the rotating rod (71) to swing. When the rotating rod (71) swings, it can drive the pointer (73) to swing through the connecting rod (72). The scale (74) is provided with a scale. After the pointer (73) swings, it can point to the tilt angle of the current mounting ring (1) on the scale (74).

4. The displacement monitoring device for municipal road network construction according to claim 1, characterized in that: The lubrication assembly (8) includes three liquid boxes (81), and three slots are provided between the mounting ring (1) and the sliding ring (51). The three liquid boxes (81) are respectively installed in the three slots on the mounting ring (1). An atomizing nozzle (82) is installed on the top of the liquid box (81), and an air bag (83) is installed on the bottom of the liquid box (81). An air pipe (84) is connected between the air bag (83) and the liquid box (81). A protruding rod (85) is connected to each of the three sliding shafts (65).

5. A displacement monitoring device for municipal road network construction according to claim 4, characterized in that: When the three protruding rods (85) move upward, they respectively squeeze the three airbags (83), and the three atomizing nozzles (82) are all facing the contact part between the hemisphere (52) and the sliding ring (51).

6. A displacement monitoring device for municipal road network construction according to claim 1, characterized in that: An extension rod (3) is slidably connected to the support leg (2), and an adjustment screw is provided between the extension rod (3) and the support leg (2).

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