Urban utility tunnel prefabricated part lifting structure capable of buffering transverse shear force

Abstract

The utility model discloses an urban comprehensive pipe gallery prefabricated part lifting structure capable of buffering transverse shear force, which comprises a main lifting platform, the main lifting platform comprises a bearing platform, the bearing platform is connected with a main lifting mechanism, and the main lifting mechanism is arranged on a lifting base; the main lifting mechanism comprises four groups of main spiral lead screw lifters which are distributed in a rectangular shape, and the output ends of the main spiral lead screw lifters are fixedly connected with the bearing platform; the main lifting platform further comprises four sets of auxiliary lifting mechanisms, the auxiliary lifting mechanisms are distributed at the positions close to the main spiral lead screw lifters in a rectangular mode, the auxiliary lifting mechanisms are fixedly connected with the bearing platform, and the auxiliary lifting mechanisms can reduce transverse shear force borne by the main spiral lead screw lifters when the horizontal prefabricated slabs are transported. The device is ingenious in structural design, high in modularization degree and stable and reliable in work; and by arranging the auxiliary lifting mechanism, the transverse shearing force borne by the main spiral lead screw lifting machine when the horizontal prefabricated slabs are transported is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of city comprehensive pipe gallery construction, especially relates to a city comprehensive pipe gallery prefabricated part lifting structure of buffer transverse shearing force. BACKGROUND

[0002] With the acceleration of urbanization, the demand of underground pipe network construction is increasing. As an important people's livelihood project of centralized laying of municipal water supply and drainage gas, power, communication and other pipeline galleries, underground comprehensive pipe gallery plays an important role in relieving ground traffic pressure, improving urban environment and improving the quality of municipal facilities. In recent years, China has introduced a series of policies on accelerating the construction of underground comprehensive pipe gallery, and prefabricated assembly construction has also been paid more and more attention by the market. Therefore, the applicant designs a shield pipe gallery prefabricated assembly type warehouse structure as shown in the figure, mainly including a cast-in-place bottom plate at the bottom of the pipe gallery, arc-shaped side support legs matched with the pipe gallery are arranged on both sides of the cast-in-place bottom plate, and a horizontal prefabricated plate is placed at the top of the arc-shaped side support leg and the middle position of the pipe gallery, thereby forming a double-layer warehouse structure of the city comprehensive pipe gallery of the utility model. Figures 6-7

[0003] However, in the process of pipe gallery construction, due to the limited space conditions, when transporting and installing the horizontal prefabricated plate used in the prefabricated warehouse structure of long distance, the equipment for transportation and installation is required to have high precision. The most commonly used in the prior art is to adopt a gantry crane to cooperate with an intelligent hoisting device to install the horizontal prefabricated plate, the intelligent hoisting machine is hoisted by the gantry crane, the horizontal prefabricated plate is hoisted by the intelligent hoisting machine, the horizontal prefabricated plate is controlled in transverse, longitudinal and rotary motion through an electrical system, and the installation of the horizontal prefabricated plate is completed. However, the gantry crane needs to be erected and installed in the pipe gallery and the intelligent hoisting device, the construction amount is large, the construction cost is high, and there is still certain limitation in the construction in some pipe galleries with arc length direction. Therefore, the applicant thinks of the scheme of using an AGV vehicle and a lifting device to pick up and place and install the horizontal prefabricated plate, but due to the large weight of the horizontal prefabricated plate, how to ensure the stability of the lifting device when lifting the horizontal prefabricated plate, and how to reduce the transverse shearing force exerted by the inertia of the horizontal prefabricated plate on the lifting device during transportation, are technical problems to be solved urgently. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a city comprehensive pipe gallery prefabricated part lifting structure can buffer transverse shearing force, has the effect that can stabilize lifting horizontal prefabricated plate and reduce the transverse shearing force exerted by the inertia of horizontal prefabricated plate on lifting structure during transportation. The specific technical scheme is as follows:

[0005] ​The utility model provides a kind of city utility tunnel prefabricated piece lifting structure of buffering transverse shear force, wherein, including main lifting platform, main lifting platform includes supporting platform, supporting platform is connected with main lifting mechanism, and main lifting mechanism is arranged on lifting base;Main lifting mechanism includes four groups of rectangular distribution main screw rod lift, and the output of main screw rod lift is fixedly connected with supporting platform, and four main screw rod lifts are connected with same main drive motor by shaft coupling and shaft, and one main drive motor is used to control four groups of main screw rod lift to carry out lifting action;Main lifting platform further includes auxiliary lifting mechanism, auxiliary lifting mechanism is four groups, rectangular distribution is at the position close to main screw rod lift, auxiliary lifting mechanism is fixedly connected with supporting platform, and auxiliary lifting mechanism can reduce the transverse shear force suffered by main screw rod lift when transporting horizontal prefabricated slab.

[0006] Further, the auxiliary lifting mechanism includes a sleeve fixed on the lifting base, a sliding rod is slidably arranged in the sleeve, the sliding rod is in close fit with the sleeve, and the top of the sliding rod is fixedly connected with the supporting platform.

[0007] Further, the output of the main screw rod lift is connected with a sensing rod, the sensing rod corresponds to a sensor, and the sensor can detect the position of the sensing rod to control the start and stop of the main screw rod lift.

[0008] Further, the sensing rod includes a landing control rod and a jacking control rod, the landing control rod and the jacking control rod correspond to a landing sensor and a jacking sensor respectively, and the length of the landing control rod is less than the length of the jacking control rod.

[0009] Further, an auxiliary lifting platform is arranged on the lifting base, and the main lifting platform and the auxiliary lifting platform can independently move up and down relative to the lifting base; the auxiliary lifting platform is two groups and is symmetrically arranged on the front and rear sides of the main lifting platform, a limiting assembly is arranged on the auxiliary lifting platform, the limiting assembly can limit the position of the horizontal prefabricated slab on the main lifting platform to ensure the accuracy of the final installation position of the horizontal prefabricated slab.

[0010] Further, the auxiliary lifting platform includes left-right symmetrically arranged limiting platforms, the limiting platforms are connected with auxiliary lifting mechanisms, the auxiliary lifting mechanisms are arranged on the lifting base, the auxiliary lifting mechanisms include auxiliary screw rod lifts, the outputs of the auxiliary screw rod lifts are fixedly connected with the limiting platforms, and the left and right auxiliary screw rod lifts are connected with same auxiliary drive motor by shaft coupling and shaft.

[0011] Further, the limiting assembly is detachably arranged on the auxiliary lifting platform, and the limiting assembly can adjust the installation position on the auxiliary lifting platform according to the size of the horizontal prefabricated slab to be transported.

[0012] Further, the limiting assembly comprises limiting blocks, the limiting block comprises an inclined arc-shaped guide part, the guide parts of the two limiting blocks corresponding in front and back form a horn mouth type which is wide at the top and narrow at the bottom; the guide part is connected with a limiting part below, the limiting part is a vertical plane, and the limiting part can abut against the side surface of the horizontal prefabricated slab to limit the position of the horizontal prefabricated slab.

[0013] Further, the side away from the limiting part of the limiting block is provided with a mounting part, the mounting part extends to form a plane away from the limiting block, and a plurality of through holes are uniformly distributed on the plane to facilitate bolt fixation.

[0014] Further, a position sensor is arranged at the midpoint position of the connecting line of the two limiting blocks, and the position sensor can detect the side position of the horizontal prefabricated slab.

[0015] The urban comprehensive pipe gallery prefabricated part lifting structure capable of buffering transverse shear force has the advantages of ingenious structure, high modular degree, stable and reliable work, cooperation of the main lifting platform and the auxiliary lifting platform, guaranteed reliability during pickup and placement of the horizontal prefabricated slab, cooperation of the position sensor for positioning, further guaranteed accuracy of pickup and placement of the horizontal prefabricated slab, and effectively reduced transverse shear force on the main screw rod lifter during transportation of the horizontal prefabricated slab.

[0016] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, the specific embodiments of the utility model can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the utility model more obvious and easy to understand, the following specific embodiments of the utility model are described. BRIEF DESCRIPTION OF DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of preferred embodiments, and are not meant to limit or otherwise contravene the scope of the present utility model. Moreover, like reference numerals in the drawings denote like elements throughout the various drawings. In the drawings:

[0018] Figure 1 The utility model discloses a city comprehensive pipe gallery prefabricated part lifting structure capable of buffering transverse shear force Figure 1 ;

[0019] Figure 2 It is A of the utility model's city comprehensive pipe gallery prefabricated part lifting structure capable of buffering transverse shear force Figure 1 Enlarged view

[0020] Figure 3 It is the schematic diagram of the utility model's city comprehensive pipe gallery prefabricated part lifting structure capable of buffering transverse shear force and placing horizontal prefabricated slab

[0021] Figure 4 It is the internal connection schematic view of the city comprehensive pipe gallery prefabricated part lifting structure capable of buffering transverse shear force of the utility model;

[0022] Figure 5 It is Figure 4 the B part enlarged view of the utility model;

[0023] Figure 6 It is the internal schematic view of the city comprehensive pipe gallery applied by the utility model;

[0024] Figure 7 It is the three-dimensional view of the city comprehensive pipe gallery applied by the utility model. DETAILED DESCRIPTION

[0025] In order to better understand the purpose, function and specific design scheme of the utility model, the city comprehensive pipe gallery prefabricated part lifting structure capable of buffering transverse shear force of the utility model is further described in detail below in combination with the drawings.

[0026] As Figures 1-5 shown, the city comprehensive pipe gallery prefabricated part lifting structure capable of buffering transverse shear force of the utility model comprises a main lifting platform 1, the main lifting platform 1 comprises a supporting platform 11, the supporting platform 11 is connected with a main lifting mechanism 12, and the main lifting mechanism 12 is arranged on a lifting base 3. The main lifting mechanism 12 comprises four groups of main screw rod elevators 13 distributed in a rectangular shape, the output end of the main screw rod elevator 13 is fixedly connected with the supporting platform 11, the four main screw rod elevators 13 are connected with the same main drive motor 14 through a shaft coupling and a rotating shaft, one main drive motor 14 is used to control the lifting action of the four groups of main screw rod elevators 13, the synchronism of the four groups of main screw rod elevators 13 can be ensured, so that the stability of the supporting platform 11 in the lifting process is ensured.

[0027] Preferably, in order to improve the automatic performance of the main lifting platform 1, the output end of the main screw rod elevator 13 of the embodiment is connected with a sensing rod, the sensing rod corresponds to a sensor, the sensor can detect the position of the sensing rod, so as to control the start and stop of the main screw rod elevator 13. Further, the sensing rod comprises a landing control rod 15 and a jacking control rod 16, the landing control rod 15 and the jacking control rod 16 correspond to a landing sensor 17 and a jacking sensor 18 respectively, and the length of the landing control rod 15 is less than the length of the jacking control rod 16.

[0028] When the support platform 11 is in the initial position, the lower end of the landing control rod 15 corresponds to the landing sensor 17, the rod of the jacking control rod 16 corresponds to the jacking sensor 18, as the support platform 11 rises, the lower end of the landing control rod 15 is separated from the landing sensor 17, when the support platform 11 reaches the preset height, the lower end of the jacking control rod 16 is separated from the jacking sensor 18, the jacking sensor 18 sends a signal to stop the lifting of the main screw rod lifter 13; When the support platform 11 descends, the lower end of the landing control rod 15 gradually approaches the landing sensor 17, and when the support platform 11 reaches the initial position, the lower end of the landing control rod 15 corresponds to the landing sensor 17, at this time the landing sensor 17 sends a signal to stop the landing of the main screw rod lifter 13. It can be understood that the landing control rod 15 and the jacking control rod 16 can be installed on the output end of the same main screw rod lifter 13, or on the output end of two different main screw rod lifters 13.

[0029] It is worth noting that due to the large weight of the horizontal prefabricated slab 5, when transporting the horizontal prefabricated slab 5, the horizontal prefabricated slab 5 will exert a transverse shear force on the main screw rod lifter 13 of the main lifting mechanism 12 through the support platform 11 due to the influence of inertial force, thereby causing the lifting screw rod of the main screw rod lifter 13 to deform, affecting the service life of the main screw rod lifter 13. Therefore, the main lifting platform 1 of the embodiment further comprises a secondary lifting mechanism 6, which is four groups and is distributed in a rectangular shape near the position of the main screw rod lifter 13, and is fixedly connected with the support platform 11. The secondary lifting mechanism 6 can reduce the transverse shear force on the main screw rod lifter 13 when transporting the horizontal prefabricated slab 5.

[0030] Specifically, the secondary lifting mechanism 6 comprises a sleeve 61 fixed on the lifting base 3, and a sliding rod 62 slidably arranged in the sleeve 61, the sliding rod 62 is in close fit with the sleeve 61, and the top of the sliding rod 62 is fixedly connected with the support platform 11. When transporting the horizontal prefabricated slab 5, due to the close fit between the sliding rod 62 and the sleeve 61, the gap between the sliding rod 62 and the sleeve 61 is much smaller than the gap between the lifting screw rod of the main screw rod lifter 13 and the cast-in-place bottom plate of the main screw rod lifter 13, even if the horizontal prefabricated slab 5 is affected by the inertial force, the transverse shear force is preferentially applied to the secondary lifting mechanism 6 through the support platform 11, thereby achieving the effect of reducing the transverse shear force on the main screw rod lifter 13 when transporting the horizontal prefabricated slab 5.

[0031] As Figure 4As shown, the lifting base of the embodiment is further provided with an auxiliary lifting platform 2, and the main lifting platform 1 and the auxiliary lifting platform 2 can independently move up and down relative to the lifting base 3; the auxiliary lifting platform 2 is two groups and symmetrically arranged on the front and rear sides of the main lifting platform 1, and the auxiliary lifting platform 2 is provided with a limiting assembly 4, which can limit the position of the horizontal prefabricated slab 5 on the main lifting platform 1, so as to ensure the accuracy of the final installation position of the horizontal prefabricated slab 5.

[0032] The auxiliary lifting platform 2 of the embodiment includes left and right symmetrically arranged limiting platforms 21, the limiting platforms 21 are connected with auxiliary lifting mechanisms 22, the auxiliary lifting mechanisms 22 are arranged on the lifting base 3, the auxiliary lifting mechanisms 22 include auxiliary screw rod elevators 23, the output ends of the auxiliary screw rod elevators 23 are fixedly connected with the limiting platforms 21, the left and right auxiliary screw rod elevators 23 are connected with the same auxiliary driving motor 24 through a shaft coupling and a rotating shaft, one auxiliary driving motor 24 is adopted to control the lifting actions of the two auxiliary screw rod elevators 23, which can ensure the synchronism of the two auxiliary screw rod elevators 23, so as to ensure the synchronism of the left and right limiting platforms 21 in the lifting process and the reliability of the limiting assembly 4.

[0033] It can be understood that, in order to improve the automation performance of the auxiliary lifting platform 2, the output end of the auxiliary screw rod elevator 23 of the embodiment is connected with a sensing rod, the sensing rod corresponds to a sensor, the sensor can detect the position of the sensing rod, so as to control the start and stop of the auxiliary screw rod elevator 23. The installation mode of the sensing rod and the sensor is the same as that of the main screw rod elevator 13, which will not be described herein.

[0034] As shown, Figures 1-2 The limiting assembly 4 is detachably arranged on the auxiliary lifting platform 2, and the limiting assembly 4 can adjust the installation position on the auxiliary lifting platform 2 according to the size of the horizontal prefabricated slab 5 to be transported. The limiting assembly 4 of the embodiment is fixed on the auxiliary lifting platform 2 through bolts. The limiting assembly 4 includes a limiting block, the limiting block includes an inclined arc-shaped guide portion 41, the guide portions 41 of the two limiting blocks corresponding in front and back form a horn-shaped type with the upper part being wide and the lower part being narrow. The guide portion 41 is connected with a limiting portion 42 below, and the limiting portion 42 is a vertical plane. The limiting portion 42 can abut against the side surface of the horizontal prefabricated slab 5 to limit the position of the horizontal prefabricated slab 5. The side of the limiting block away from the limiting portion 42 is provided with a mounting portion 43, the mounting portion 43 extends to form a plane away from the limiting block, and the plane is uniformly provided with a plurality of through holes to facilitate bolt fixation.

[0035] Preferably, in order to accurately pick and place the horizontal prefabricated slab 5, a position sensor 44 is arranged at the midpoint of the connecting line of the two limiting blocks, which can detect the side position of the horizontal prefabricated slab 5. The horizontal prefabricated slab 5 in the embodiment is placed on the placing rack, and the lifting assembly 3 is detachably connected with the AGV chassis as a whole. In the embodiment, the lifting assembly 3 is fixed on the AGV chassis as a whole by bolts. Preferably, in order to facilitate the installation of the lifting assembly 3 as a whole, four hooks are arranged on the two sides of the lifting assembly 3, so as to facilitate the lifting of the lifting assembly 3 as a whole by the crane and the placement of the lifting assembly 3 on the AGV chassis.

[0036] The urban comprehensive pipe gallery prefabricated part lifting structure capable of buffering transverse shear force in the utility model can be used for lifting the horizontal prefabricated slab 5 in actual installation and laying. First, the AGV chassis is moved to the lower side of the placing rack. When the position sensor 44 detects the side of the horizontal prefabricated slab 5, the AGV chassis stops moving. At this time, the supporting platform 11 is first lifted, and then the limiting platform 21 is lifted, so that the height of the supporting platform 11 is slightly higher than that of the limiting platform 21, and the guide part 41 of the limiting block is higher than the height of the supporting platform 11, so as to ensure that the guide part 41 of the limiting block first guides and positions the horizontal prefabricated slab 5. Then, the supporting platform 11 first contacts the bottom surface of the horizontal prefabricated slab 5, and then the horizontal prefabricated slab 5 is lifted, so as to realize the picking of the horizontal prefabricated slab 5.

[0037] When the horizontal prefabricated slab 5 is placed for the first time, the AGV chassis moves in the pipe gallery, and after moving to the preset position, the limiting platform 21 is first lowered, and then the supporting platform 11 is lowered, so that the height of the supporting platform 11 is slightly higher than that of the limiting platform 21 to bear the weight of the horizontal prefabricated slab 5, and the guide part 41 of the limiting block is higher than the height of the supporting platform 11, so as to ensure that the limiting part 42 of the limiting block can continuously limit the horizontal prefabricated slab 5. Then, the horizontal prefabricated slab 5 is placed at the preset position on the top of the side supporting leg, so as to complete the placement and installation of the horizontal prefabricated slab 5. The supporting platform 11 and the limiting platform 21 are lowered to the initial position, and then the AGV chassis moves to the lower side of the placing rack to pick the next horizontal prefabricated slab 5.

[0038] It is worth noting that when the horizontal prefabricated slab 5 is placed for the second time and subsequently, when the AGV chassis is about to move to the position where the last horizontal prefabricated slab 5 is laid, the speed is first reduced, and at the same time, the front limiting platform 21 is lowered to the initial position. Then, when the position sensor 44 detects the side of the horizontal prefabricated slab 5, the AGV chassis stops. At this time, the rear limiting platform 21 is lowered, and then the supporting platform 11 is lowered, so that the height of the supporting platform 11 is slightly higher than that of the limiting platform 21 to bear the weight of the horizontal prefabricated slab 5, and the guide part 41 of the limiting block is higher than the height of the supporting platform 11, so as to ensure that the limiting part 42 of the limiting block can continuously limit the horizontal prefabricated slab 5. Then, the horizontal prefabricated slab 5 is placed at the preset position on the top of the side supporting leg, so as to complete the continuous laying of the horizontal prefabricated slab 5.

[0039] The utility model discloses a city comprehensive pipe gallery prefabricated part lifting structure of buffering lateral shear force, clever structure design, high degree of modularization, stable and reliable work, through the cooperation of main lifting platform and auxiliary lifting platform, the reliability of horizontal prefabricated plate's pickup and placement is guaranteed, and the positioning of position sensor is further guaranteed, and the accuracy of horizontal prefabricated plate's pickup and placement is further guaranteed, through the setting up of vice lifting mechanism, the lateral shear force that main screw rod elevator bears when transporting horizontal prefabricated plate is effectively reduced.

[0040] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A city utility tunnel precast lifting structure capable of buffering transverse shear force, characterized in that, The main lifting platform comprises a supporting platform connected with a main lifting mechanism arranged on a lifting base; the main lifting mechanism comprises four groups of main screw rod elevators arranged in a rectangular shape, the output ends of the main screw rod elevators are fixedly connected with the supporting platform, the four groups of main screw rod elevators are connected with a same main driving motor through shaft couplings and shafts, and one main driving motor is adopted to control the four groups of main screw rod elevators to perform lifting actions. The main lifting platform further comprises a sub-lifting mechanism, the sub-lifting mechanism is arranged in a rectangular shape at a position close to the main screw rod elevators, and the sub-lifting mechanism is fixedly connected with the supporting platform; the sub-lifting mechanism can reduce the lateral shear force borne by the main screw rod elevators when the horizontal precast slab is transported.

2. The urban utility tunnel precast lift structure capable of buffering lateral shear forces according to claim 1, wherein, The sub-lifting mechanism comprises a sleeve fixed on the lifting base, a sliding rod slidingly arranged in the sleeve, and the sliding rod is in close fit with the sleeve; the top of the sliding rod is fixedly connected with the supporting platform.

3. The urban utility tunnel precast lift structure capable of buffering lateral shear forces according to claim 1, wherein, The output end of the main screw rod elevator is connected with a sensing rod, the sensing rod corresponds to a sensor, and the sensor can detect the position of the sensing rod, thereby controlling the start and stop of the main screw rod elevator.

4. The urban utility tunnel precast lift structure capable of buffering lateral shear forces according to claim 3, wherein, The sensing rod comprises a landing control rod and a jacking control rod, the landing control rod and the jacking control rod correspond to a landing sensor and a jacking sensor respectively, and the length of the landing control rod is smaller than the length of the jacking control rod.

5. The urban utility tunnel precast lift structure that can buffer lateral shear force according to claim 1, wherein, The lifting base is provided with an auxiliary lifting platform, the main lifting platform and the auxiliary lifting platform can independently move up and down relative to the lifting base; the auxiliary lifting platform comprises two groups of auxiliary lifting mechanisms arranged symmetrically on the front and rear sides of the main lifting platform, and the auxiliary lifting platform is provided with a limiting assembly; the limiting assembly can limit the position of the horizontal precast slab on the main lifting platform, so as to ensure the accuracy of the final installation position of the horizontal precast slab.

6. The urban utility tunnel precast lift structure that can buffer lateral shear force according to claim 5, wherein, The auxiliary lifting platform comprises left and right symmetrical limiting platforms connected with auxiliary lifting mechanisms arranged on the lifting base; the auxiliary lifting mechanisms comprise auxiliary screw rod elevators, the output ends of the auxiliary screw rod elevators are fixedly connected with the limiting platforms, and the left and right auxiliary screw rod elevators are connected with a same auxiliary driving motor through shaft couplings and shafts.

7. The urban utility tunnel precast lift structure capable of buffering lateral shear forces of claim 5, wherein, The limiting assembly is detachably arranged on the auxiliary lifting platform, and the limiting assembly can be adjusted in the installation position on the auxiliary lifting platform according to the size of the horizontal precast slab to be transported.

8. The urban utility tunnel precast lift structure that can buffer lateral shear force according to claim 7, characterized in that, The limiting assembly comprises a limiting block, the limiting block comprises an inclined arc-shaped guide portion, the guide portions of the two limiting blocks correspondingly arranged in front and back form a horn-shaped opening with the upper part being wide and the lower part being narrow; the guide portion is connected with a limiting portion below, the limiting portion is a vertical plane, and the limiting portion can abut against the side surface of the horizontal precast slab to limit the position of the horizontal precast slab.

9. The urban utility tunnel precast lift structure that can buffer lateral shear force according to claim 8, wherein, The side of the limiting block away from the limiting portion is provided with a mounting portion, the mounting portion extends in a direction away from the limiting block to form a plane, and a plurality of through holes are uniformly distributed on the plane to facilitate bolt fixation.

10. The urban utility tunnel precast lift structure capable of buffering lateral shear forces according to claim 7, wherein, A position sensor is arranged at the midpoint of the connecting line of the left and right limiting blocks, and the position sensor can detect the side position of the horizontal precast slab.

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