An underground pipeline settlement monitoring device

Abstract

The utility model relates to an underground pipeline settlement monitoring device belongs to pipeline settlement monitoring technical field. Including the fixed lock ring of setting in the outside of underground pipeline, the upper end of fixed lock ring is detachably connected with telescopic sleeve spare, the upper end fixed connection of telescopic sleeve spare has ground base plate, the centre of ground base plate is equipped with hole and links together with telescopic sleeve spare inside, the upper end detachably connected with protection shell of ground base plate, the upper end fixed connection of fixed lock ring has monitoring rod, monitoring rod is located inside telescopic sleeve spare and its upper end extends to the inside of protection shell. The utility model discloses through setting up real -time settlement monitoring subassembly and maximum settlement monitoring subassembly respectively on the both sides of monitoring rod, can synchronous monitoring and record monitoring rod's real -time amount of descending and its ever reached historical maximum amount of descending respectively, thereby indirectly draws the real -time and maximum settlement value of underground pipeline, provides complete data support for the comprehensive evaluation of underground pipeline settlement risk.

Description

Technical Field

[0001] This utility model relates to the field of pipeline settlement monitoring technology, and in particular to an underground pipeline settlement monitoring device. Background Technology

[0002] During the construction of underground pipelines, settlement monitoring is often required within the construction impact area to ensure their safe operation.

[0003] Existing underground pipeline settlement monitoring devices typically only monitor the real-time settlement value of underground pipelines. For example, utility model CN217276146U discloses an underground pipeline settlement monitoring device, including a conduit and a rectangular shell. A circular block is installed on the upper surface of the conduit, and a vertical rod is installed on the upper surface of the circular block. The vertical rod is inserted into the rectangular shell, and a top block is installed at the top of the vertical rod. A pointer is installed on the front of the top block, and a scale is installed on the front of the rectangular shell. The front of the rectangular shell has symmetrically opened grooves, and a sliding component is slidably connected inside the two sets of grooves. A cover plate is installed on the side of the sliding component near the scale. This utility model, by setting up this groove, sliding component, and cover plate structure, can directly and completely cover the scale during the use of the device by utilizing the combined action of the two sets of cover plates. This isolates the scale from the external environment, preventing the scale from being corroded and damaged, thus ensuring the integrity of the scale reading and improving monitoring accuracy.

[0004] This device, through the mechanical coordination of a vertical rod, pointer, and scale, can intuitively reflect the real-time settlement of underground pipelines. However, during the actual settlement process of underground pipelines, the pipelines are affected by soil disturbance, which may lead to a complex settlement phenomenon of initial settlement followed by slight rebound. This makes it impossible for existing devices to record and display the historical maximum settlement value reached by underground pipelines, thus making it difficult to comprehensively assess the safety risks of underground pipelines. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this utility model provides an underground pipeline settlement monitoring device. The technical solution of this utility model is as follows: An underground pipeline settlement monitoring device includes a fixing ring sleeved on the outside of the underground pipeline. The upper end of the fixing ring is detachably connected to a telescopic sleeve. The upper end of the telescopic sleeve is fixedly connected to a ground base plate. The center of the ground base plate has a hole that communicates with the interior of the telescopic sleeve. The upper end of the ground base plate is detachably connected to a protective shell. The upper end of the fixing ring is fixedly connected to a monitoring rod. The monitoring rod is located inside the telescopic sleeve and its upper end extends into the interior of the protective shell. The upper ends of the monitoring rod and located inside the protective shell are respectively connected to a real-time settlement monitoring component for recording real-time settlement values ​​and a maximum settlement monitoring component for recording maximum settlement values. Two sets of racks are symmetrically fixed on both sides of the upper end of the monitoring rod; The real-time settlement monitoring component includes a first gear, which meshes with one set of racks on the monitoring rod, and a first scale recording disk for displaying the real-time rotation value of the first gear is connected to the front of the first gear. The maximum settlement monitoring component includes a second gear that meshes with another set of racks on the monitoring rod. A second scale recording disk is connected to the front of the second gear to display the maximum rotation value reached by the second gear.

[0006] Optionally, a fixed ring seat is fixedly connected to the upper center position of the fixed locking ring, and the telescopic sleeve includes an inner sleeve and an outer sleeve. The inner sleeve is inserted into the inside of the fixed ring seat and the two are fixed together by bolts. The outer sleeve is slidably sleeved on the upper outside of the inner sleeve, and the upper end of the outer sleeve is fixedly connected to the hole in the center of the ground substrate.

[0007] Optionally, the real-time settlement monitoring component further includes a first support base, which is fixedly connected to the upper end of the ground substrate and located on the right side of the monitoring rod. The first gear meshes with the rack on the upper right side of the monitoring rod. A first shaft is fixedly connected to the center of the first gear. Two sets of support lugs for supporting the two ends of the first shaft are fixedly connected to the first support base. The first shaft is rotatably connected to the support lugs. A first rotating rod is fixedly connected to the front end of the first shaft. The front end of the first rotating rod rotates through a first scale recording disk. A first pointer that cooperates with the first scale recording disk for reading is fixedly connected to the front end of the first rotating rod. The first scale recording disk is fixedly connected to the first support base through a first fixing plate.

[0008] Optionally, the maximum settlement monitoring component further includes a second support base, a turntable, and a limiting pin. The second support base is fixedly connected to the upper end of the ground substrate and located on the left side of the monitoring rod. The second gear meshes with a rack on the upper left side of the monitoring rod. A second shaft is fixedly connected to the center of the second gear. Two sets of fixed lugs for supporting the two ends of the second shaft are fixedly connected to the second support base. The second shaft is rotatably connected to the fixed lugs. The turntable is positioned between the second gear and the second scale recording disk. A rear ring seat is fixedly connected to the center of the rear side of the turntable. The front end of the second shaft is rotatably connected to the inside of the rear ring seat. An arc-shaped groove is formed on the rear surface of the turntable. The rear end of the limiting pin is fixedly connected to the front side of the second gear, and the front end of the limiting pin is slidably connected in the arc-shaped groove. A front ring seat is fixedly connected to the center of the front side of the turntable. A second rotating rod is fixedly connected inside the front ring seat. The front end of the second rotating rod rotates through the second scale recording disk. A second pointer that cooperates with the second scale recording disk to read the value is fixedly connected to the front end of the second rotating rod. The second scale recording disk is fixedly connected to the second support base through the second fixing plate. A square frame is fixedly connected to the second support base through the connecting seat. The square frame is set on the outside of the turntable. The upper and lower ends of the inside of the square frame are provided with elastic abutment members to increase the rotation friction of the turntable. In its initial state, the limiting pin abuts against the drive side end of the arc-shaped slide groove.

[0009] Optionally, the limiting pin is a rigid pin of fixed length.

[0010] Optionally, the limiting pin is a radially retractable elastic pin, which includes a fixed sleeve and a movable pin. The fixed sleeve is fixedly connected to the front side of the second gear, and the movable pin is radially slidably connected to the inner front end of the fixed sleeve. A first spring is connected inside the fixed sleeve. The drive side end wall of the arc-shaped slide groove is a vertical abutment wall for driving rotation, and the other end wall of the arc-shaped slide groove is a guide slope to facilitate the limiting pin sliding out of the arc-shaped slide groove.

[0011] Optionally, threaded holes are provided at the center of the upper and lower sides of the square frame, and guide holes are provided on both sides of the upper and lower sides of the square frame and on both sides of the threaded holes. The elastic abutment includes a support plate and an arc-shaped abutment block that elastically abuts against the annular sidewall of the turntable. An adjusting bolt is rotatably connected to the center of the side of the support plate away from the turntable. The adjusting bolt is threaded into the threaded hole. Guide rods are fixedly connected to both sides of the support plate away from the turntable and on both sides of the adjusting bolt. The guide rods are slidably connected in the guide holes at corresponding positions. Slide rails are vertically fixedly connected to both ends of the side of the support plate near the turntable. The arc-shaped abutment block is located between the support plate and the turntable. Guide seats are fixedly connected to both ends of the side of the arc-shaped abutment block away from the turntable. The guide seats are slidably connected in the slide rails at corresponding positions. Multiple sets of second springs are fixedly connected between the support plate and the arc-shaped abutment block.

[0012] All of the above optional technical solutions can be combined arbitrarily, and this utility model does not provide a detailed description of the structure after each combination.

[0013] The beneficial effects of this utility model through the above solution are as follows: 1. This utility model, by setting real-time settlement monitoring components and maximum settlement monitoring components on both sides of the monitoring rod, can simultaneously monitor and record the real-time downward movement of the monitoring rod and its historical maximum downward movement, thereby indirectly obtaining the real-time and maximum settlement values ​​of the underground pipeline, providing complete data support for a comprehensive assessment of the settlement risk of the underground pipeline.

[0014] 2. When underground pipelines settle, the monitoring rod is lowered via a fixing ring. The monitoring rod simultaneously lowers two sets of racks at the top. During the descent, the two sets of racks drive the first gear and the second gear to rotate, respectively. Workers can read the real-time rotation value of the first gear (i.e., the real-time downward movement of the monitoring rod) and the maximum rotation value reached by the second gear (i.e., the maximum downward movement of the monitoring rod) by observing the first and second scale recording dials, thus enhancing real-time control over the underground pipeline settlement process.

[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall appearance structure of the underground pipeline settlement monitoring device provided by this utility model; Figure 2 Front view of the underground pipeline settlement monitoring device provided by this utility model; Figure 3 for Figure 2 Front sectional view; Figure 4 An exploded view of the underground pipeline settlement monitoring device provided by this utility model; Figure 5 This is a top view showing the monitoring rod, real-time settlement monitoring component, and maximum settlement monitoring component working together in this utility model; Figure 6 This is an exploded structural diagram of the real-time settlement monitoring component in this utility model; Figure 7 This is a side cross-sectional view of the largest settlement monitoring component in this utility model; Figure 8 This is an exploded view of the maximum settlement monitoring component in this invention. Figure 1 ; Figure 9 This is a schematic diagram of the structure of the turntable, square frame and elastic abutment in this utility model. Figure 10 This is an exploded view of the maximum settlement monitoring component in this invention. Figure 2 ; Figure 11 This is a side sectional view of the limiting pin in this utility model.

[0017] Labels in the diagram: 1. Underground pipeline; 2. Fixing ring; 21. Fixing ring seat; 3. Telescopic sleeve; 31. Inner sleeve; 32. Outer sleeve; 4. Ground base plate; 41. Protective shell; 5. Monitoring rod; 51. Rack; 6. Real-time settlement monitoring component; 61. First gear; 62. First scale recording disk; 621. First fixing plate; 622. Transparent cover; 63. First support seat; 631. Support ear plate; 64. First shaft; 65. First rotating rod; 66. First pointer; 7. Maximum settlement monitoring component; 71. Second gear; 72. Second scale recording disk; 721. Second fixing plate; 73. Second support seat; 731. Fixing ear 732. Plate; 74. Connecting seat; 75. Second shaft; 76. Turntable; 77. Arc-shaped slide groove; 78. Vertical abutment wall; 79. Guide slope; 70. Arc-shaped connecting groove; 71. Rear ring seat; 72. Front ring seat; 73. Limiting pin; 74. Fixed sleeve; 75. Movable pin; 76. First spring; 77. Second rotating rod; 78. Second pointer; 79. Square frame; 70. Threaded hole; 71. Guide hole; 72. Elastic abutment piece; 79. Support plate; 79. Adjusting bolt; 79. Guide rod; 79. Slide rail; 79. Arc-shaped abutment block; 79. Guide seat; 79. Second spring. Detailed Implementation

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0019] Please see Figure 1-11 This utility model provides an underground pipeline settlement monitoring device, including a fixing ring 2 sleeved on the outside of the underground pipeline 1. The fixing ring 2 includes two sets of symmetrical semi-circular latches that fasten to the outside of the underground pipeline 1, and the two sets of semi-circular latches are fixed by bolts. A telescopic sleeve 3 is detachably connected to the upper end of the fixing ring 2. A ground base plate 4 is fixedly connected to the upper end of the telescopic sleeve 3. The ground base plate 4 can be placed on a horizontal ground or a reference position that can represent the actual horizontal plane. A hole is opened in the center of the ground base plate 4 and communicates with the inside of the telescopic sleeve 3. A protective shell 41 is detachably connected to the upper end of the ground base plate 4, and a protective side door is hinged to the front side of the protective shell 41. A monitoring rod 5 is fixedly connected to the upper end of the fixing ring 2. When the underground pipeline 1 settles, the underground pipeline 1 drives the monitoring rod 5 to descend through the fixing ring 2. The monitoring rod 5 is located inside the telescopic sleeve 3 and its upper end extends into the protective shell 41. The upper ends of the monitoring rod 5 and the protective shell 41 are respectively connected to the real-time settlement monitoring component 6 for recording real-time settlement value and the maximum settlement monitoring component 7 for recording maximum settlement value. Two sets of racks 51 are symmetrically fixed on both sides of the upper end of the monitoring rod 5; The real-time settlement monitoring component 6 includes a first gear 61, which meshes with one set of racks 51 of the monitoring rod 5. A first scale recording disk 62 for displaying the real-time rotation value of the first gear 61 is connected to the front of the first gear 61. The maximum settlement monitoring component 7 includes a second gear 71, which meshes with another set of racks 51 of the monitoring rod 5. A second scale recording disk 72 is connected to the front of the second gear 71 to display the maximum rotation value reached by the second gear 71.

[0020] Specifically, both the front sides of the first scale recording disk 62 and the second scale recording disk 72 are threaded with transparent covers 622.

[0021] This invention, by setting real-time settlement monitoring components 6 and maximum settlement monitoring components 7 on both sides of the monitoring rod 5, can simultaneously monitor and record the real-time downward movement of the monitoring rod 5 and its historical maximum downward movement, thereby indirectly obtaining the real-time and maximum settlement values ​​of the underground pipeline 1, providing complete data support for a comprehensive assessment of the settlement risk of the underground pipeline 1.

[0022] Specifically, when underground pipeline 1 settles, underground pipeline 1 drives monitoring rod 5 to descend via fixing ring 2. Monitoring rod 5 simultaneously drives two sets of racks 51 at the upper end to descend. During the descent, the two sets of racks 51 drive the first gear 61 and the second gear 71 to rotate respectively. Staff can read the real-time rotation value of the first gear 61 (i.e., the real-time downward movement of monitoring rod 5) and the maximum rotation value reached by the second gear 71 (i.e., the maximum downward movement of monitoring rod 5) by observing the first scale recording disk 62 and the second scale recording disk 72, thereby enhancing the real-time control of the settlement process of underground pipeline 1.

[0023] Furthermore, a fixed ring seat 21 is fixedly connected to the upper center position of the fixed locking ring 2. The telescopic sleeve 3 includes an inner sleeve 31 and an outer sleeve 32. The inner sleeve 31 is inserted into the inside of the fixed ring seat 21 and the two are fixed together by bolts. The outer sleeve 32 is slidably sleeved on the upper outside of the inner sleeve 31. The upper end of the outer sleeve 32 is fixedly connected to the hole in the center of the ground base plate 4.

[0024] Specifically, during the settlement process of underground pipeline 1, underground pipeline 1 drives the inner sleeve 31 to descend via the fixing ring 2, while the outer sleeve 32 and the ground base plate 4 remain relatively stationary with respect to the ground level. Furthermore, the telescopic sleeve 3 and the fixing ring 2 are detachably connected, facilitating subsequent disassembly and maintenance.

[0025] Furthermore, the real-time settlement monitoring component 6 also includes a first support base 63, which is fixedly connected to the upper end of the ground substrate 4 and located on the right side of the monitoring rod 5. A first gear 61 meshes with a rack 51 on the upper right side of the monitoring rod 5. A first shaft 64 is fixedly connected to the center of the first gear 61. Two sets of support lugs 631 for supporting the two ends of the first shaft 64 are fixedly connected to the first support base 63. The first shaft 64 and the support lugs 631 are rotatably connected. A first rotating rod 65 is fixedly connected to the front end of the first shaft 64. The front end of the first rotating rod 65 rotates through the first scale recording disk 62. A first pointer 66 that cooperates with the first scale recording disk 62 for reading is fixedly connected to the front end of the first rotating rod 65. The first scale recording disk 62 is fixedly connected to the first support base 63 through a first fixing plate 621.

[0026] Specifically, when underground pipeline 1 settles, it indirectly causes the two sets of racks 51 at the upper end of monitoring rod 5 to descend. At this time, the rack 51 on the right side will drive the first gear 61 to rotate counterclockwise (the direction of rotation depends on...). Figure 3As shown, the first gear 61 drives the first rotating rod 65 and the first pointer 66 to rotate counterclockwise synchronously via the first shaft 64, displaying the settlement of the underground pipeline 1 in real time. When the underground pipeline 1 settles and then slightly rises, the rack 51 rises, thereby driving the first gear 61 and the first pointer 66 to rotate clockwise. The staff can know the real-time rotation value of the first gear 61 through the indication position of the first pointer 66 on the first scale recording disk 62, thus indirectly knowing the real-time settlement value of the underground pipeline 1.

[0027] Furthermore, the maximum settlement monitoring component 7 also includes a second support base 73, a turntable 75, and a limiting pin 76. The second support base 73 is fixedly connected to the upper end of the ground substrate 4 and located on the left side of the monitoring rod 5. The second gear 71 meshes with the rack 51 on the upper left side of the monitoring rod 5. A second shaft 74 is fixedly connected to the center of the second gear 71. Two sets of fixing lugs 731 for supporting the two ends of the second shaft 74 are fixedly connected to the second support base 73. The second shaft 74 is rotatably connected to the fixing lugs 731. The turntable 75 is located between the second gear 71 and the second scale recording disk 72. A rear ring seat 752 is fixedly connected to the center of the rear side of the turntable 75. The front end of the second shaft 74 is rotatably connected to the inside of the rear ring seat 752. An arc-shaped groove 751 is formed on the rear surface of the turntable 75. The rear end of the positioning pin 76 is fixedly connected to the front side of the second gear 71, and the front end of the limiting pin 76 is slidably connected in the arc-shaped slide groove 751. The front center of the turntable 75 is fixedly connected to the front ring seat 753, and the interior of the front ring seat 753 is fixedly connected to the second rotating rod 77. The front end of the second rotating rod 77 rotates through the second scale recording disk 72. The front end of the second rotating rod 77 is fixedly connected to the second pointer 771 that cooperates with the second scale recording disk 72 for reading. The second scale recording disk 72 is fixedly connected to the second support seat 73 through the second fixing plate 721. The second support seat 73 is fixedly connected to the square frame 78 through the connecting seat 732. The square frame 78 is located on the outside of the turntable 75. The upper and lower ends of the square frame 78 are provided with elastic abutment members 79 to increase the rotation friction of the turntable 75. In the initial state, the limiting pin 76 abuts against the drive side end of the arc-shaped slide groove 751.

[0028] Specifically, when underground pipeline 1 settles, it indirectly causes the two sets of racks 51 at the upper end of monitoring rod 5 to descend. At this time, the rack 51 on the left side will drive the second gear 71 to rotate clockwise (the direction of rotation depends on...). Figure 3As shown), the second gear 71 drives the second shaft 74 and the limiting pin 76 to rotate clockwise synchronously. At this time, the limiting pin 76 is located at the driving end of the arc-shaped slide 751 (i.e., the clockwise end of the arc-shaped slide 751). As the limiting pin 76 rotates, it indirectly drives the turntable 75 to rotate. Driven by the limiting pin 76, the turntable 75 overcomes the friction of the elastic abutment 79 and rotates clockwise synchronously with the second gear 71. In turn, the turntable 75 drives the second rotating rod 77 and the second pointer 771 to rotate clockwise, thereby indicating the maximum settlement value of the underground pipeline 1. When underground pipeline 1 settles and then experiences a slight rebound, rack 51 rises, causing the second gear 71 and limit pin 76 to rotate counterclockwise. At this time, turntable 75 remains stationary under the action of elastic abutment 79, while limit pin 76 rotates counterclockwise within arc-shaped groove 751. This ensures that when underground pipeline 1 slightly rebounds, it does not cause turntable 75 and the second pointer 771 to rotate; the second pointer 771 still points to the settlement value before the rebound. Workers can determine the maximum rotation value reached by the second gear 71 by observing the position of the second pointer 771 on the second scale recording dial 72, thus indirectly determining the maximum settlement value of underground pipeline 1. (It should be noted that the rebound amplitude of underground pipeline 1 after settlement is relatively small; therefore, the arc length of arc-shaped groove 751 is sufficient to satisfy the counterclockwise sliding displacement of limit pin 76 within arc-shaped groove 751.) Furthermore, threaded holes 781 are provided through the center of the upper and lower sides of the square frame 78, and guide holes 782 are provided through the upper and lower sides of the square frame 78 on both sides of the threaded holes 781. The elastic abutment member 79 includes a support plate 791 and an arc-shaped abutment block 795 that elastically abuts against the annular sidewall of the turntable 75. An adjusting bolt 792 is rotatably connected to the center of the side of the support plate 791 away from the turntable 75. The adjusting bolt 792 is threaded into the inside of the threaded hole 781. The side of the support plate 791 away from the turntable 75 and located at the center of the adjusting bolt 792 Guide rods 793 are fixedly connected to both sides of the support plate 791. The guide rods 793 are slidably connected in the guide holes 782 at the corresponding positions. Slide rails 794 are vertically fixedly connected to both ends of the support plate 791 near the turntable 75. The arc-shaped abutment block 795 is located between the support plate 791 and the turntable 75. Guide seats 796 are fixedly connected to both ends of the arc-shaped abutment block 795 away from the turntable 75. The guide seats 796 are slidably connected in the slide rails 794 at the corresponding positions. Multiple sets of second springs 797 are fixedly connected between the support plate 791 and the arc-shaped abutment block 795.

[0029] Specifically, the operator can flexibly adjust the frictional force between the arc-shaped abutment block 795 and the annular sidewall of the turntable 75 according to the actual rotation requirements of the turntable 75. This ensures that when the second gear 71 drives the turntable 75 to rotate clockwise via the limit pin 76, the turntable 75 can overcome the frictional force of the two sets of arc-shaped abutment blocks 795 and rotate synchronously. However, when the second gear 71 drives the limit pin 76 to rotate counterclockwise within the arc-shaped slide groove 751, it will not drive the turntable 75 to rotate. During adjustment, simply rotate the adjusting bolt 792. The adjusting bolt 792 drives the support plate 791 to rise and fall. During this process, the support plate 791 simultaneously drives the guide rod 793 to slide vertically within the guide hole 782, ensuring that the support plate 791 can only slide vertically. When the support plate 791 is adjusted towards the turntable 75, the arc-shaped abutment block 795 elastically abuts against the annular sidewall of the turntable 75 under the action of the second spring 797. As the adjusting bolt 792 is continuously adjusted, the distance between the support plate 791 and the arc-shaped abutment block 795 gradually decreases. At this time, the guide seat 796 slides in the corresponding slide rail 794, and the second spring 797 is gradually compressed. While being compressed, the second spring 797 applies an elastic force in the opposite direction to the arc-shaped abutment block 795, increasing the abutment friction between the arc-shaped abutment block 795 and the annular sidewall of the turntable 75.

[0030] Furthermore, the limiting pin 76 is a rigid pin of fixed length.

[0031] Specifically, the limit pin 76 is a rigid pin, which can ensure that when the second gear 71 rotates, it can effectively drive the turntable 75 to rotate.

[0032] In another embodiment of this utility model, the limiting pin 76 is a radially retractable elastic pin. The limiting pin 76 includes a fixed sleeve 761 and a movable pin 762. The fixed sleeve 761 is fixedly connected to the front side of the second gear 71. The movable pin 762 is radially slidably connected to the inner front end of the fixed sleeve 761. A first spring 763 is connected inside the fixed sleeve 761. The drive side end wall of the arc-shaped slide groove 751 is a vertical abutment wall 7511 for driving rotation. The other end wall of the arc-shaped slide groove 751 is a guide slope 7512 to facilitate the limiting pin 76 sliding out of the arc-shaped slide groove 751. The vertical abutment wall 7511 and the guide slope 7512 are connected by an arc-shaped connecting groove 7513.

[0033] Specifically, the limiting pin 76 is configured as a radially retractable elastic pin. When the underground pipeline 1 rises significantly and the arc length of the arc-shaped groove 751 cannot satisfy the counterclockwise sliding displacement of the limiting pin 76 within the arc-shaped groove 751, the limiting pin 76 will slide counterclockwise from the drive side end of the arc-shaped groove 751 to the other end. As the limiting pin 76 continues to slide, it will slide onto the guide slope 7512. Under the guidance of the guide slope 7512, the movable pin 762 gradually retracts into the fixed sleeve 761. At this time, the first spring 763 is compressed, and the length of the limiting pin 76 is shortened. The limiting pin 76 will slide out of the arc-shaped groove 751 from the guide slope 7512 and enter the arc-shaped connecting groove 7513. As the limiting pin 76 continues to slide, it will slide back to the drive side end of the arc-shaped groove 751, at which point the length of the limiting pin 76 is restored. Secondly, the drive side end wall of the arc-shaped slide 751 is a vertical abutment wall 7511 for driving rotation. When the second gear 71 drives the limit pin 76 to rotate clockwise, the movable pin 762 abuts against the vertical abutment wall 7511, thereby effectively driving the turntable 75 to rotate.

[0034] The above are merely preferred embodiments of this utility model and are not intended to limit this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A device for monitoring settlement of underground pipelines, characterized in that: The system includes a fixed locking ring (2) fitted on the outside of the underground pipeline (1). The upper end of the fixed locking ring (2) is detachably connected to a telescopic sleeve (3). The upper end of the telescopic sleeve (3) is fixedly connected to a ground base plate (4). The center of the ground base plate (4) has a hole that communicates with the inside of the telescopic sleeve (3). The upper end of the ground base plate (4) is detachably connected to a protective shell (41). The upper end of the fixed locking ring (2) is fixedly connected to a monitoring rod (5). The monitoring rod (5) is located inside the telescopic sleeve (3) and its upper end extends into the inside of the protective shell (41). The upper ends of the monitoring rod (5) are connected to a real-time settlement monitoring component (6) for recording real-time settlement values ​​and a maximum settlement monitoring component (7) for recording maximum settlement values, respectively. Two sets of racks (51) are symmetrically fixed on both sides of the upper end of the monitoring rod (5); The real-time settlement monitoring component (6) includes a first gear (61), which meshes with one of the racks (51) of the monitoring rod (5), and a first scale recording disk (62) for displaying the real-time rotation value of the first gear (61) is connected to the front of the first gear (61). The maximum settlement monitoring component (7) includes a second gear (71) that meshes with another set of racks (51) of the monitoring rod (5). A second scale recording disk (72) is connected to the front of the second gear (71) to display the maximum rotation value reached by the second gear (71).

2. The underground pipeline settlement monitoring device according to claim 1, characterized in that, The upper center of the fixed locking ring (2) is fixedly connected to a fixed ring seat (21). The telescopic sleeve (3) includes an inner sleeve (31) and an outer sleeve (32). The inner sleeve (31) is inserted into the inside of the fixed ring seat (21) and the two are fixed together by bolts. The outer sleeve (32) is slidably sleeved on the upper part of the outer side of the inner sleeve (31). The upper end of the outer sleeve (32) is fixedly connected to the hole in the center of the ground substrate (4).

3. The underground pipeline settlement monitoring device according to claim 1, characterized in that, The real-time settlement monitoring component (6) further includes a first support base (63), which is fixedly connected to the upper end of the ground substrate (4) and located on the right side of the monitoring rod (5). The first gear (61) meshes with the rack (51) on the upper right side of the monitoring rod (5). The center of the first gear (61) is fixedly connected to a first shaft (64). Two sets of support ears (631) for supporting the two ends of the first shaft (64) are fixedly connected on the first support base (63). The first shaft (64) is rotatably connected to the support ears (631). The front end of the first shaft (64) is fixedly connected to a first rotating rod (65). The front end of the first rotating rod (65) rotates through the first scale recording disk (62). The front end of the first rotating rod (65) is fixedly connected to a first pointer (66) that cooperates with the first scale recording disk (62) for reading. The first scale recording disk (62) is fixedly connected to the first support base (63) through a first fixing plate (621).

4. The underground pipeline settlement monitoring device according to claim 1, characterized in that, The maximum settlement monitoring component (7) also includes a second support base (73), a turntable (75), and a limiting pin (76). The second support base (73) is fixedly connected to the upper end of the ground substrate (4) and located on the left side of the monitoring rod (5). The second gear (71) meshes with the rack (51) on the upper left side of the monitoring rod (5). A second shaft (74) is fixedly connected to the center of the second gear (71). Two sets of supports for the second set are fixedly connected to the second support base (73). The second shaft (74) has fixed lugs (731) at both ends, and the fixed lugs (731) are rotatably connected to the second shaft (74). The turntable (75) is located between the second gear (71) and the second scale recording disk (72). A rear ring seat (752) is fixedly connected to the rear center of the turntable (75). The front end of the second shaft (74) is rotatably connected to the interior of the rear ring seat (752). An arc-shaped groove (751) is provided on the rear surface of the turntable (75). The rear end of the limiting pin (76) is fixedly connected to the front side of the second gear (71), and the front end of the limiting pin (76) is slidably connected in the arc-shaped groove (751). The front center of the turntable (75) is fixedly connected to the front ring seat (753). The interior of the front ring seat (753) is fixedly connected to the second rotating rod (77). The front end of the second rotating rod (77) rotates through the second scale recording disk (72). The front end of the second rotating rod (77) is fixedly connected to the second pointer (771) that cooperates with the second scale recording disk (72) for reading. The second scale recording disk (72) is fixedly connected to the second support seat (73) through the second fixing plate (721). The second support seat (73) is fixedly connected to the square frame (78) through the connecting seat (732). The square frame (78) is set on the outside of the turntable (75). The upper and lower ends of the inside of the square frame (78) are provided with elastic abutment members (79) to increase the rotation friction of the turntable (75). In the initial state, the limiting pin (76) abuts against the drive side end of the arc-shaped slide (751).

5. The underground pipeline settlement monitoring device according to claim 4, characterized in that, The limiting pin (76) is a rigid pin of fixed length.

6. The underground pipeline settlement monitoring device according to claim 4, characterized in that, The limiting pin (76) is a radially retractable elastic pin. The limiting pin (76) includes a fixed sleeve (761) and a movable pin (762). The fixed sleeve (761) is fixedly connected to the front side of the second gear (71). The movable pin (762) is radially slidably connected to the inner front end of the fixed sleeve (761). A first spring (763) is connected inside the fixed sleeve (761). The drive side end wall of the arc-shaped slide groove (751) is a vertical abutment wall (7511) for driving rotation. The other end wall of the arc-shaped slide groove (751) is a guide slope (7512) to facilitate the limiting pin (76) to slide out of the arc-shaped slide groove (751).

7. A subsurface pipeline settlement monitoring device according to claim 4, 5 or 6, characterized in that, The square frame (78) has threaded holes (781) at the center of its upper and lower sides. Guide holes (782) are also provided on the upper and lower sides of the square frame (78) on both sides of the threaded holes (781). The elastic abutment (79) includes a support plate (791) and an arc-shaped abutment block (795) that elastically abuts against the annular sidewall of the turntable (75). An adjusting bolt (792) is rotatably connected to the center of the side of the support plate (791) away from the turntable (75). The adjusting bolt (792) is threaded into the inside of the threaded hole (781). The side of the support plate (791) away from the turntable (75) and located on both sides of the adjusting bolt (792)... Guide rods (793) are fixedly connected to each side. The guide rods (793) are slidably connected in the guide holes (782) at the corresponding positions. Slide rails (794) are vertically fixedly connected to both ends of the side of the support plate (791) near the turntable (75). The arc-shaped abutment block (795) is located between the support plate (791) and the turntable (75). Guide seats (796) are fixedly connected to both ends of the side of the arc-shaped abutment block (795) away from the turntable (75). The guide seats (796) are slidably connected in the slide rails (794) at the corresponding positions. Multiple sets of second springs (797) are fixedly connected between the support plate (791) and the arc-shaped abutment block (795).

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