Structural body displacement detection device for comprehensive pipe gallery

Abstract

The utility model relates to the technical field of pipe gallery displacement detection, in particular to a structural body displacement detection device for a comprehensive pipe gallery, which comprises a pipe gallery main body, two sides of the pipe gallery main body are respectively provided with a base, and the structural body displacement detection device further comprises a detection piece, a mounting mechanism and a lifting mechanism. The two sides of the pipe gallery body are each provided with a detection piece used for detecting whether the pressure of the pipe gallery body on the base is kept uniform or not. The extension mechanism and the detection part are limited in the pipe gallery main body through the limiting mechanism, the detection part is subjected to zero calibration, and when the pipe gallery main body moves and sinks, the extension mechanism drives the detection part to move downwards, so that the detection part can detect the pressure change of the pipe gallery main body, and the problem that a diluted hydrochloric acid solution expands due to heat and contracts due to cold when the temperature changes is solved. The movement of the detection block, the piston rod and other parts deviates, and finally the detection precision of the settlement monitoring device on the settlement displacement amount is affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe gallery displacement detection technical field, concretely relates to a kind of about comprehensive pipe gallery's structural displacement detection device. BACKGROUND

[0002] As part of urban infrastructure, comprehensive pipe gallery carries multiple pipelines such as power, communication, water pipe and gas. During long-term operation, the pipe gallery may be affected by external load, soil settlement, underground water changes and other factors, causing displacement or deformation of the pipe gallery structure. If not monitored in time, local damage or structural risks may occur, affecting the stability of the pipe gallery structure. At this time, the comprehensive pipe gallery installation structural displacement detection device can help engineers and maintenance personnel master the health status of the pipe gallery, help relevant personnel take timely measures to avoid safety accidents or pipe gallery damage caused by structural problems.

[0003] Chinese authorized patent publication No. CN119714198A discloses a settlement monitoring device applied to comprehensive pipe gallery, belonging to the field of settlement detection, comprising a reinforcing block and an air bag. The sidewall of the reinforcing block is provided with multiple anchor rods, and the inside of the reinforcing block is further provided with a detection mechanism and a supporting mechanism. The detection mechanism includes a hydraulic chamber one and a detection chamber opened in the inside of the reinforcing block. The invention can amplify and detect the settlement displacement when the pipe gallery settles, and the inside of the liquid storage pipe is pressurized to push the dilute hydrochloric acid solution into the reaction cylinder to generate carbon dioxide gas, so that the pressure in the air cavity increases, the supporting sleeve moves up to make the supporting block contact with the pipe gallery, and the amount of gas reaction generated in the reaction cylinder can be controlled according to the settlement amount of the pipe gallery to control the reaction force on the pipe gallery and compensate for the settlement difference, ensuring that the overall structure of the pipe gallery is evenly stressed.

[0004] In the above-mentioned patent, when the pipe gallery settles, the inside of the liquid storage pipe is pressurized to push the dilute hydrochloric acid solution into the reaction cylinder to generate carbon dioxide gas, which pushes the supporting sleeve to move up to make the supporting block contact with the pipe gallery, avoiding pipe gallery deformation and settlement. However, due to temperature changes, the dilute hydrochloric acid solution will expand and contract. When the temperature rises, the volume of the solution expands, and if the space of the liquid storage pipe is limited, the internal pressure will increase. When the temperature drops, the volume of the solution shrinks, which can easily cause local pressure instability. This pressure fluctuation can interfere with the stability of pressure transmission in the settlement detection structure based on hydraulic principle, causing the movement of detection block, piston rod and other components to deviate, ultimately affecting the detection accuracy of settlement displacement. Therefore, we propose a structural displacement detection device for comprehensive pipe gallery. UTILITY MODEL CONTENTS

[0005] In view of the above problems, the application provides a structure displacement detection device for a comprehensive pipe gallery, which detects the change of the pressure of the pipe gallery main body by a detection piece, and solves the technical problem that the movement of the detection block, the piston rod and other components is deviated due to the thermal expansion and contraction of the dilute hydrochloric acid solution when the temperature changes, and finally the detection accuracy of the settlement displacement amount by the settlement monitoring device is affected.

[0006] To solve the problems in the prior art, the utility model provides a structure displacement detection device for a comprehensive pipe gallery, including pipe gallery main body, the both sides of pipe gallery main body are provided with base respectively, structure displacement detection device still includes detection piece, mounting mechanism and lifting mechanism, the both sides of pipe gallery main body are provided with detection piece for detecting whether the pressure of pipe gallery main body to base is kept uniform, the outside of detection piece is provided with mounting mechanism for restricting detection piece and pipe gallery main body together for detection, the both sides of base are provided with lifting mechanism for supporting pipe gallery main body and preventing subsidence displacement.

[0007] Preferably, the mounting mechanism includes a limiting mechanism, an extension mechanism, and a foreign matter prevention mechanism; the limiting mechanism is arranged above the detection piece and is used to limit the detection piece and the pipe gallery main body together; the extension mechanism is arranged on the upper side of the detection piece and is used to keep the detection piece and the base in a state of adhesion; and the foreign matter prevention mechanism is arranged on the outer side of the detection piece and is used to prevent soil and rocks from interfering with the adhesion of the detection piece and the base.

[0008] Preferably, the limiting mechanism includes a screw groove and a cover plate; the screw groove is arranged on the outer side of the pipe gallery main body; and the cover plate is threadedly connected with the screw groove.

[0009] Preferably, the extension mechanism includes a butt joint rod, a butt joint pipe, and a first elastic return piece; the upper end of the butt joint rod is connected with the cover plate; the butt joint pipe is slidably connected with the lower end of the butt joint rod, and the lower end of the butt joint pipe is connected with the detection piece; the first elastic return piece is sleeved on one end of the butt joint rod close to the butt joint pipe, and the two ends of the first elastic return piece are respectively connected with the butt joint rod and the butt joint pipe.

[0010] Preferably, the foreign matter prevention mechanism includes a dustproof piece, a second elastic return piece, a first connecting pipe, and a second connecting pipe; the dustproof piece is sleeved on the outer side of the extension mechanism and the detection piece, and the upper side of the dustproof piece is connected with the pipe gallery main body; the second elastic return piece is arranged on the inner side of the dustproof piece, the upper end of the second elastic return piece is connected with the pipe gallery main body, and the lower end of the second elastic return piece is connected with the lower side of the dustproof piece; the first connecting pipe is arranged on the inner side of the second elastic return piece, and the upper side of the first connecting pipe is connected with the pipe gallery main body; the second connecting pipe is slidably connected with the first connecting pipe, and the lower side of the second connecting pipe is connected with the lower side of the dustproof piece.

[0011] Preferably, the anti-mixing mechanism further comprises a guiding mechanism for preventing the second connecting pipe from rotating by itself when sliding with the first connecting pipe; the guiding mechanism comprises a sliding block and a sliding groove; the sliding block is connected with the second connecting pipe; the sliding groove is arranged on the side of the first connecting pipe close to the sliding block and is used for cooperating with the sliding block to move linearly.

[0012] Preferably, the lifting mechanism comprises a screw rod, a supporting rod, a connecting plate and a sliding rod; the screw rod can be vertically arranged on both sides of the base; the supporting rod is threadedly connected with the screw rod; the connecting plate is connected with the supporting rod; one end of the sliding rod is slidably penetrated through the upper and lower sides of the connecting plate, and the lower end of the sliding rod is connected with the base.

[0013] Preferably, the lifting mechanism further comprises a driving mechanism for preventing the supporting rod from loosening when moving downward after moving upward; the driving mechanism comprises a power element, a worm and a worm wheel; the power element is fixedly installed on the side of the base close to the screw rod; the worm is rotatably arranged on the base, and one end of the worm is connected with the output end of the power element; the worm wheel is rotatably arranged on the base, the worm wheel is in butt joint with the worm, and one side of the worm wheel is connected with the lower end of the screw rod.

[0014] The utility model discloses compared with prior art has the beneficial effects that:

[0015] 1. The extension mechanism and the detection piece are limited in the pipe gallery main body through the limiting mechanism, and the detection piece is calibrated to zero, when the pipe gallery main body is displaced and sinks, the extension mechanism drives the detection piece to move downward, so that the detection piece can detect the change of the pressure of the pipe gallery main body, solve the technical problem that when temperature changes, dilute hydrochloric acid solution will expand when heated and contract when cooled, the movement of detection block, piston rod and other components deviates, finally affects the detection precision of the settlement monitoring device on the settlement displacement.

[0016] 2. The pipe gallery main body is supported when moving downward through the lifting mechanism, and the self-locking structure formed by the worm wheel and the worm of the lifting mechanism enhances the stability of the supporting rod in supporting the pipe gallery main body, solves the technical problem that the supporting height and position control precision of the pipe gallery main body are relatively low, and it is difficult to accurately meet the accurate supporting demand of the pipe gallery main body sinking to different degrees. DRAWINGS

[0017] Figure 1 It is a kind of about comprehensive pipe gallery's structural body displacement detection device's pipe gallery main body and base and its connection structure three-dimensional schematic view.

[0018] Figure 2 It is a kind of about comprehensive pipe gallery's structural body displacement detection device's sliding rod and power element and its connection structure three-dimensional schematic view.

[0019] Figure 3 It is a kind of about comprehensive pipe gallery's structural body displacement detection device's butt joint rod and butt joint pipe and its connection structure three-dimensional schematic view.

[0020] Figure 4 It is a screw rod and a support rod and a connecting structure three-dimensional schematic view of a structure displacement detection device for comprehensive pipe gallery.

[0021] Figure 5 It is a screw rod and a support rod and a connecting structure three-dimensional schematic view of a structure displacement detection device for comprehensive pipe gallery. Figure 1 The enlarged schematic view at A in the middle.

[0022] Figure 6 It is a screw rod and a support rod and a connecting structure three-dimensional schematic view of a structure displacement detection device for comprehensive pipe gallery. Figure 2 The enlarged schematic view at B in the middle.

[0023] The reference signs in the figure are: 1, pipe gallery main body; 11, base; 2, detection piece; 21, screw groove; 22, cover plate; 23, butt joint rod; 24, butt joint pipe; 25, first elastic reset piece; 26, dustproof piece; 27, second elastic reset piece; 28, first connecting pipe; 29, second connecting pipe; 210, sliding block; 211, sliding groove; 212, screw rod; 213, support rod; 214, connecting plate; 215, sliding rod; 216, power piece; 217, worm; 218, worm wheel. DETAILED DESCRIPTION

[0024] In order to further understand the characteristics, technical means and specific purposes and functions achieved by the utility model, the utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0025] Referring to Figures 1-2 The utility model discloses a structure displacement detection device for comprehensive pipe gallery, including pipe gallery main body 1, the both sides of pipe gallery main body 1 are provided with base 11 respectively, and the structure displacement detection device further includes detection piece 2, mounting mechanism and lifting mechanism, the both sides of pipe gallery main body 1 are provided with detection piece 2 for detecting whether the pressure of pipe gallery main body 1 to base 11 keeps uniform, the outside of detection piece 2 is provided with mounting mechanism for limiting detection piece 2 and pipe gallery main body 1 together for detection, the both sides of base 11 are provided with lifting mechanism for supporting pipe gallery main body 1 and preventing subsidence displacement, the mounting mechanism includes limiting mechanism, extension mechanism and miscellaneous prevention mechanism, the top of detection piece 2 is provided with limiting mechanism for limiting detection piece 2 and pipe gallery main body 1 together, the upper side of detection piece 2 is provided with extension mechanism for keeping the adhesion state of detection piece 2 and base 11, and the outside of detection piece 2 is provided with miscellaneous prevention mechanism for preventing the interference of soil and stone to the adhesion of detection piece 2 and base 11.

[0026] Specifically, detection piece 2 selects spoke type pressure sensor as specific implementation element, and the number of detection piece 2 corresponds to the number of lifting mechanism.

[0027] When the comprehensive pipe gallery is put into use, first of all, the anchor rod and other fasteners are used to install the base 11, and then the pipe gallery body 1 is installed between the two bases 11. At this time, the sundry prevention mechanism is tightly attached to the upper side of the base 11. The staff can clean the soil fragments that may be left inside the sundry prevention mechanism through the screw groove 21.

[0028] After cleaning, the extension mechanism and the detection piece 2 are limited in the pipe gallery body 1 by using the limiting mechanism. Then, the extension mechanism pushes the detection piece 2 to move downward, so that the detection piece 2 is tightly attached to the base 11 and generates extrusion. In this process, the detection piece 2 performs zero-point calibration by using its automatic zero calibration function to ensure the accuracy of the detection data.

[0029] When the pipe gallery body 1 is displaced and sinks, the sundry prevention mechanism is contracted, and the pipe gallery body 1 drives the detection piece 2 to move downward synchronously by means of the installation mechanism. At this time, the detection piece 2 corresponding to the sinking can detect the pressure change and transmit the pressure change signal to the corresponding lifting mechanism. After receiving the signal, the lifting mechanism starts to apply an upward force to the pipe gallery body 1, thereby preventing the pipe gallery body 1 from continuing to sink.

[0030] Referring to FIGS. 1 to 4, Figures 1-3 and Figure 6 The limiting mechanism includes a screw groove 21 and a cover plate 22; the screw groove 21 is opened on the outer side of the pipe gallery body 1; the cover plate 22 is threadedly connected with the screw groove 21; the extension mechanism includes a butt joint rod 23, a butt joint pipe 24, and a first elastic reset piece 25; the upper end of the butt joint rod 23 is connected with the cover plate 22; the butt joint pipe 24 is slidably connected with the lower end of the butt joint rod 23, and the lower end of the butt joint pipe 24 is connected with the detection piece 2; the first elastic reset piece 25 is sleeved on one end of the butt joint rod 23 close to the butt joint pipe 24, and the two ends of the first elastic reset piece 25 are respectively connected with the butt joint rod 23 and the butt joint pipe 24.

[0031] Specifically, the butt joint rod 23 and the butt joint pipe 24 are matched with each other. The first elastic reset piece 25 and the second elastic reset piece 27 are both selected to be springs as specific implementation elements.

[0032] When the structure displacement detection device is put into use, the extension mechanism is inserted into the screw groove 21. At this time, the butt joint pipe 24 drives the detection piece 2 to be attached to the base 11. As the extension mechanism gradually penetrates into the screw groove 21, the butt joint rod 23 and the butt joint pipe 24 generate contraction sliding, so that the first elastic reset piece 25 is synchronously forced to contract.

[0033] Subsequently, the cover plate 22 and the screw groove 21 are rotationally connected, so that the cover plate 22 and the screw groove 21 limit each other. In this way, the extension mechanism drives the detection piece 2 to be limited inside the sundry prevention mechanism, while ensuring that the detection piece 2 always maintains the attached state with the base 11 and performs zero-point calibration on the detection piece 2.

[0034] When the pipe gallery main body 1 sinks, the pipe gallery main body 1 drives the detection piece 2 to move downwards, and the butt joint rod 23 and the butt joint pipe 24 continue to contract. At this time, the detection piece 2 can detect the pressure change, and further detect the sinking displacement of the pipe gallery main body 1.

[0035] As shown in Figures 1-3 and Figure 6 shown, the dirt prevention mechanism includes a dust prevention piece 26, a second elastic reset piece 27, a first connecting pipe 28 and a second connecting pipe 29; the dust prevention piece 26 is sleeved on the outside of the extension mechanism and the detection piece 2, and the upper side of the dust prevention piece 26 is connected with the pipe gallery main body 1; the second elastic reset piece 27 is arranged on the inside of the dust prevention piece 26, the upper end of the second elastic reset piece 27 is connected with the pipe gallery main body 1, and the lower end of the second elastic reset piece 27 is connected with the lower side of the dust prevention piece 26; the first connecting pipe 28 is arranged on the inside of the second elastic reset piece 27, and the upper side of the first connecting pipe 28 is connected with the pipe gallery main body 1; the second connecting pipe 29 is slidably connected with the first connecting pipe 28, and the lower side of the second connecting pipe 29 is connected with the lower side of the dust prevention piece 26; the dirt prevention mechanism further includes a guide mechanism, which is used for preventing the second connecting pipe 29 from rotating by itself when the second connecting pipe 29 and the first connecting pipe 28 slide; the guide mechanism includes a sliding block 210 and a sliding groove 211; the sliding block 210 is connected with the second connecting pipe 29; the sliding groove 211 is arranged on the side of the first connecting pipe 28 close to the sliding block 210, and is used for cooperating with the sliding block 210 to move linearly.

[0036] Specifically, the dust prevention piece 26 selects a foldable bellows as a specific implementation element. The first connecting pipe 28 and the second connecting pipe 29 are matched with each other, and the sliding block 210 and the sliding groove 211 are matched with each other. The damper is installed on the side of the pipe gallery main body 1 and the base 11 close to the dirt prevention mechanism.

[0037] When the pipe gallery main body 1 sinks, the second elastic reset piece 27 provides support for the pipe gallery main body 1. In this process, the second elastic reset piece 27 contracts due to bearing the weight of the pipe gallery main body 1. At the same time, the installed damper generates resistance, which can effectively consume the energy generated by the vibration of the second elastic reset piece 27, thereby reducing the impact of the repeated bouncing of the second elastic reset piece 27 on the pipe gallery and related structures.

[0038] When the second elastic reset piece 27 contracts, the dust prevention piece 26 synchronously contracts. At the same time, the first connecting pipe 28 and the second connecting pipe 29 slide and contract. Due to the matching of the first connecting pipe 28 and the second connecting pipe 29 and the matching of the sliding block 210 and the sliding groove 211, the second elastic reset piece 27 is not easy to bend and deform in the contraction process. This makes the dirt prevention mechanism contract correspondingly with the sinking displacement of the pipe gallery main body 1, effectively preventing the detection work of the detection piece 2 from being disturbed by the soil and gravel when the pipe gallery main body 1 sinks.

[0039] As shown inFigure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown in the figure, the lifting mechanism includes a screw rod 212, a support rod 213, a connecting plate 214 and a sliding rod 215; the screw rod 212 can be vertically arranged on both sides of the base 11; the support rod 213 is threadedly connected with the screw rod 212; the connecting plate 214 is connected with the support rod 213; one end of the sliding rod 215 is slidably penetrated through the upper and lower sides of the connecting plate 214, and the lower end of the sliding rod 215 is connected with the base 11; the lifting mechanism further includes a driving mechanism, which is used to prevent the support rod 213 from loosening after moving upward; the driving mechanism includes a power member 216, a worm 217 and a worm wheel 218; the power member 216 is fixedly installed on one side of the base 11 close to the screw rod 212; the worm 217 is rotatably arranged on the base 11, and one end of the worm 217 is connected with the output end of the power member 216; the worm wheel 218 is rotatably arranged on the base 11, and the worm wheel 218 is in butt joint with the worm 217, and one side of the worm wheel 218 is connected with the lower end of the screw rod 212.

[0040] Specifically, the inner side dimension of the connecting plate 214 matches the diameter of the sliding rod 215, the power member 216 selects a motor as a specific implementation element, and the worm wheel 218 is in meshing engagement with the worm 217.

[0041] When the detection member 2 transmits the pressure change signal to the lifting mechanism, the power member 216 is started. At this time, the output end of the power member 216 drives the worm 217 to rotate, and due to the meshing relationship between the worm wheel 218 and the worm 217, the worm wheel 218 will rotate synchronously with the worm 217. The rotation of the worm wheel 218 further drives the screw rod 212 connected therewith to rotate.

[0042] In this process, the connecting plate 214 and the sliding rod 215 cooperate in a sliding butt joint manner, effectively preventing the support rod 213 from rotating with the screw rod 212. Since the screw rod 212 and the support rod 213 are threadedly connected, when the screw rod 212 rotates, the support rod 213 can move upward along the screw rod 212, thereby providing upward supporting force for the pipe gallery main body 1 to move upward.

[0043] In addition, the self-locking structure formed by the worm wheel 218 and the worm 217 enhances the stability of the support rod 213 supporting the pipe gallery main body 1. Therefore, when the structure displacement detection device detects that the pipe gallery main body 1 moves downward, the pipe gallery main body 1 can be timely supported, effectively preventing the pipe gallery main body 1 from continuing to have settlement displacement, and the rising height of the support rod can be accurately controlled, thereby realizing accurate support positioning of the pipe gallery main body.

[0044] Working principle: when the pipe gallery main body 1 is displaced and sinks, the detection piece 2 can detect the pressure change of the pipe gallery main body 1 sinking, at this time the detection piece 2 can transmit the pressure change to the lifting assembly, and the power piece 216 is automatically started, so that the supporting rod 213 stably supports the pipe gallery main body 1, so that when the structure body displacement detection device detects that the pipe gallery main body 1 moves downward, the pipe gallery main body 1 can be supported in time, and the continuous settlement displacement of the pipe gallery main body 1 is effectively prevented.

[0045] The above embodiment only expresses one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A structure displacement detection device for a utility tunnel, comprising a utility tunnel main body (1), two sides of the utility tunnel main body (1) are respectively provided with a base (11), characterized in that, The structural displacement detection device also includes a detection component (2), an installation mechanism, and a lifting mechanism; On both sides of the main body of the pipe gallery (1), there are detection elements (2) for detecting whether the pressure of the main body of the pipe gallery (1) on the base (11) is uniform; An installation mechanism is provided on the outside of the inspection piece (2) to restrict the inspection piece (2) together with the main body of the pipe gallery (1) for inspection; The base (11) is provided with lifting mechanisms on both sides to support the main body (1) of the pipe gallery and prevent it from sinking or shifting.

2. The structural displacement detection device for a utility tunnel according to claim 1, wherein The installation mechanism includes a limiting mechanism, an extension mechanism, and a debris-proof mechanism; A limiting mechanism is provided above the testing component (2) to restrict the testing component (2) and the main body of the pipe gallery (1) together; An extension mechanism is provided on the upper side of the test piece (2) to keep the test piece (2) in contact with the base (11); The outer side of the test piece (2) is provided with a debris-proof mechanism to prevent soil and gravel from interfering with the fit between the test piece (2) and the base (11).

3. The structural displacement detection apparatus for a utility tunnel according to claim 2, wherein The limiting mechanism includes a screw groove (21) and a cover plate (22); The screw groove (21) is located on the outside of the main body of the pipe gallery (1); The cover plate (22) is threadedly connected to the screw groove (21).

4. The structural displacement detection apparatus for a utility tunnel according to claim 2, wherein The extension mechanism includes a docking rod (23), a docking tube (24), and a first elastic reset member (25); The upper end of the connecting rod (23) is connected to the cover plate (22); The lower ends of the connecting pipe (24) and the connecting rod (23) are slidably connected, and the lower end of the connecting pipe (24) is connected to the test piece (2); The first elastic reset member (25) is sleeved on the end of the docking rod (23) near the docking tube (24), and the two ends of the first elastic reset member (25) are connected to the docking rod (23) and the docking tube (24) respectively.

5. The structural displacement detection apparatus for a utility tunnel according to claim 2, wherein The anti-dust mechanism includes a dustproof component (26), a second elastic reset component (27), a first connecting pipe (28), and a second connecting pipe (29); The dustproof component (26) is fitted on the outside of the extension mechanism and the detection component (2), and the upper side of the dustproof component (26) is connected to the main body of the pipe gallery (1); The second elastic reset member (27) is disposed inside the dustproof member (26). The upper end of the second elastic reset member (27) is connected to the main body of the pipe gallery (1), and the lower end of the second elastic reset member (27) is connected to the lower side of the dustproof member (26). The first connecting pipe (28) is disposed inside the second elastic reset member (27), and the upper side of the first connecting pipe (28) is connected to the main body (1) of the pipe gallery; The second connecting pipe (29) is slidably connected to the first connecting pipe (28), and the lower side of the second connecting pipe (29) is connected to the lower side of the dustproof component (26).

6. The structural displacement detection apparatus for a utility tunnel according to claim 5, wherein The anti-miscellaneous mechanism also includes a guide mechanism, which is used to prevent the second connecting pipe (29) from shifting or rotating when it slides with the first connecting pipe (28); the guide mechanism includes a slider (210) and a groove (211); The slider (210) is connected to the second connecting tube (29); The slide (211) is located on the side of the first connecting pipe (28) near the slider (210). The slide (211) is used to cooperate with the slider (210) to move linearly.

7. The structural displacement detection apparatus for a utility tunnel according to claim 1, wherein The lifting mechanism includes a screw (212), a support rod (213), a connecting plate (214), and a slide rod (215); The screw rod (212) is vertically arranged on two sides of the base (11); The supporting rod (213) is threadedly connected with the screw rod (212); The connecting plate (214) is connected with the supporting rod (213); One end of the sliding rod (215) is slidably arranged through the upper and lower sides of the connecting plate (214), and the lower end of the sliding rod (215) is connected with the base (11).

8. The structural displacement detection apparatus for a utility tunnel according to claim 7, wherein The lifting mechanism further comprises a driving mechanism for preventing the supporting rod (213) from loosening after moving upward; the driving mechanism comprises a power member (216), a worm (217) and a worm wheel (218); The power member (216) is fixedly installed on one side of the base (11) close to the screw rod (212); The worm (217) is rotatably arranged on the base (11), and one end of the worm (217) is connected with the output end of the power member (216); The worm wheel (218) is rotatably arranged on the base (11), the worm wheel (218) is in abutment with the worm (217), and one side of the worm wheel (218) is connected with the lower end of the screw rod (212).

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