A prefabricated comprehensive pipe gallery cast-in-place device and a construction method thereof

Abstract

The application discloses a prefabricated comprehensive pipe gallery cast-in-place device and a construction method thereof, relates to the technical field of comprehensive pipe gallery construction, and aims at solving the problem of inconvenient positioning in the hoisting process of a prefabricated body of the comprehensive pipe gallery. The device comprises two groups of U-shaped plates used for clamping and mounting on the two side walls of a lower prefabricated body, adjusting assemblies are arranged between the two groups of U-shaped plates, clamping assemblies are arranged on the U-shaped plates, centering positioning assemblies are symmetrically arranged on the two sides of the U-shaped plates, and supporting assemblies are further arranged on the two sides of the U-shaped plates. The centering positioning assembly comprises an L-shaped frame fixed on one side of the U-shaped plate, the two centering positioning assemblies are symmetrically arranged on the L-shaped frames, and the opposite sides of the two centering positioning assemblies are connected with positioning plates through elastic assemblies. The upper end of the positioning plate is fixed with an inclined plate used for abutting and driving the lower end of an upper prefabricated body. The device is convenient for accurately hoisting the upper prefabricated body, convenient for adjusting the distance between adjacent upper prefabricated bodies, convenient for pouring construction and glue filling sealing, and can effectively improve the quality and efficiency of the prefabricated comprehensive pipe gallery cast-in-place construction.

Description

Technical Field

[0001] This invention relates to the field of integrated utility tunnel construction technology, specifically to a prefabricated integrated utility tunnel casting device and its construction method. Background Technology

[0002] Integrated utility tunnels are underground structures and ancillary facilities built in cities to accommodate two or more types of urban engineering pipelines. Precast integrated utility tunnels with cast-in-place construction are a technology used in their construction, combining the advantages of both prefabrication and cast-in-place techniques. This approach aims to improve construction efficiency and quality while reducing environmental impact. Specifically, prefabrication involves manufacturing components such as tunnel partitions and floors in a factory, which are then transported to the construction site for assembly. This method offers advantages such as fast construction speed, controllable quality, and minimal environmental and traffic impact.

[0003] During the in-situ casting process of prefabricated integrated utility tunnels, the prefabricated upper components need to be hoisted onto the cast lower components. However, during the hoisting process, the hoisted upper components are prone to swaying, affecting their positioning and subsequent construction. Therefore, there is an urgent need for an in-situ casting device and construction method for prefabricated integrated utility tunnels to solve this problem. Summary of the Invention

[0004] The purpose of this invention is to provide a precast integrated utility tunnel casting device and its construction method to solve the problem of inconvenient positioning during the hoisting of precast integrated utility tunnel bodies.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a precast integrated utility tunnel casting device, comprising:

[0006] The prefabricated integrated utility tunnel consists of a lower prefabricated body and an upper prefabricated body. The upper end of the upper prefabricated body is equipped with a hoisting rope to assist in the hoisting of the upper prefabricated body.

[0007] Two sets of U-shaped plates are used for clamping and installing on both side walls of the lower precast body. The four side walls of the two sets of U-shaped plates are all vertically set and the U-shaped opening is horizontal. An adjustment component is set between the two sets of U-shaped plates to assist in adjusting the distance between the two sets of U-shaped plates. A clamping component is set on the U-shaped plate for clamping and fixing on one side of the lower precast body. A centering positioning component is symmetrically set on both sides of the U-shaped plate for centering the upper precast body during the hoisting process. A support component is set on both sides of the U-shaped plate for supporting the upper precast body during the hoisting process.

[0008] The centering positioning component includes an L-shaped frame fixed to one side of the U-shaped plate. The L-shaped frames of the two centering positioning components are symmetrically arranged, and the opposite sides of the two are connected to a positioning plate by an elastic component. The upper end of the positioning plate is fixed with an inclined plate for abutting against the lower end of the upper precast body.

[0009] Preferably, the elastic component includes multiple sets of first sleeves fixed on the L-shaped frame, each set of first sleeves is slidably connected to a first slide rod, one end of the first slide rod is fixed to one side of the positioning plate, and a first spring is sleeved on the outside of each set of first sleeves, with both ends of the first spring connected to the L-shaped frame and the positioning plate respectively.

[0010] Preferably, the support assembly includes a support plate disposed above the L-shaped frame, an abutment plate pre-formed on the outer side of the upper precast body for abutting against the end of the support plate during hoisting, a telescopic assembly for raising and lowering the L-shaped frame, and a rolling assembly for assisting sliding during the support of the upper precast body at the upper end of the support plate.

[0011] Preferably, the telescopic assembly includes a strip plate fixed to the outside of the L-shaped frame. Multiple sets of second sleeves are fixed to the upper end of the strip plate. A second slide rod is slidably connected to each set of second sleeves. One end of the second slide rod is fixed to the lower end of the support plate. A second spring is sleeved on the outside of each set of second sleeves. The two ends of the second spring are respectively connected to the support plate and the strip plate.

[0012] Preferably, the rolling assembly includes multiple sets of spherical grooves formed on the upper end of the support plate, and the multiple sets of spherical grooves are arranged at equal intervals on the support plate, with rolling balls rotatably connected inside each set of spherical grooves.

[0013] Preferably, the clamping assembly includes a first clamping plate fixed to the inside of the U-shaped plate, and a second clamping plate connected to the U-shaped plate via a pushing assembly.

[0014] Preferably, the pushing component includes a threaded sleeve fixed to the U-shaped plate, a threaded rod threadedly engaged with the threaded sleeve, one end of the threaded rod being rotatably connected to one side of the second clamping plate, a drive pin being fixed to the end of the threaded rod away from the second clamping plate, and a guide component for guiding the second clamping plate during the pushing process is provided on the U-shaped plate.

[0015] Preferably, the guide assembly includes two sets of guide rods slidably connected to the U-shaped plate. The two sets of guide rods are located on both sides of the threaded sleeve. One end of each set of guide rods is fixed to the second clamping plate, and the other end of the guide rods is fixed to a limit plate.

[0016] Preferably, the adjusting assembly includes a fixing plate fixed to the end of the two U-shaped plates away from the opening, a double-threaded tube is provided between the two fixing plates, the threads at both ends of the double-threaded tube are arranged in opposite directions, the two ends of the double-threaded tube are threadedly connected to lead screws, the two ends of the two sets of lead screws are respectively fixed to the two sets of fixing plates, a third sleeve is provided between the two sets of fixing plates, the two ends of the third sleeve are slidably connected to third slide rods, the two ends of the two sets of third slide rods are respectively fixed to the two sets of fixing plates.

[0017] Another technical solution provided by this invention: a method for cast-in-place construction of a precast integrated utility tunnel, using the aforementioned device, includes the following specific contents: During the cast-in-place construction of the precast integrated utility tunnel, two sets of U-shaped plates are respectively installed and fixed on the two side walls of the lower precast body. During the installation and fixing process, the double-threaded pipe is rotated. Because the threads at both ends of the double-threaded pipe are set in opposite directions, during the rotation of the double-threaded pipe, the two sets of fixed plates and U-shaped plates are driven to move under force through the mutual meshing transmission between the double-threaded pipe and the two sets of screws; during the movement of the two sets of U-shaped plates, the sliding guidance effect of the third sleeve and the third sliding rod causes the two sets of U-shaped plates after being subjected to force to move closer to each other or further away from each other, thereby controlling the movement of the two sets of U-shaped plates. The spacing between the U-shaped plates is adjusted to facilitate the installation and fixing of the two sets of U-shaped plates to lower precast bodies of different sizes. After the spacing between the two sets of U-shaped plates is adjusted, the U-shaped plates are pushed towards the lower precast body. During the pushing process, the first clamping plate abuts against the inner side of the lower precast body. After the pushing is completed, the threaded rod is driven to rotate by the drive pin. During the rotation of the threaded rod, the second clamping plate is driven to move through the meshing transmission between the threaded rod and the threaded sleeve. During the movement of the second clamping plate, the sliding guidance of the two sets of guide rods causes the second clamping plate, after being subjected to force, to abut against the outer side of the lower precast body. By having the first and second clamping plates abut against the inner and outer sides of the lower precast body respectively, the U-shaped plates are fixed to the lower precast body. On the upper precast body: After two sets of U-shaped plates are installed and fixed on both sides of the lower precast body, the upper precast body is hoisted onto the lower precast body using hoisting ropes and external hoisting equipment. During the hoisting process, the lower end of the upper precast body abuts against the inclined plates of the two sets of positioning plates on the U-shaped plates. During this abutment, the two sets of inclined plates and positioning plates are pushed away from each other. As the upper precast body continues to be hoisted, the first spring on the elastic component pushes the positioning plates against each other, causing the two sets of positioning plates to abut against the inner sides of the upper precast body, thus pushing and centering the upper precast body for more accurate placement onto the lower precast body. During the hoisting and positioning process, the outer abutment plate of the upper precast body abuts against the ball bearings of the support plate above the U-shaped plate. The upper precast structure is supported by ball bearings on the support plate during the hoisting process. During the support process, the rolling action of multiple ball bearings inside the spherical groove facilitates the movement of the upper precast structure during hoisting and support. This movement of the upper precast structure allows for adjustment of the distance between the upper precast structure and adjacent precast structures on the precast integrated utility tunnel, further facilitating subsequent pouring and sealing. Furthermore, during the support process, the gravity of the upper precast structure pushes the support plate towards the strip plate in a contracting motion. This contraction of the support plate helps maintain support for the upper precast structure while the upper precast structure continues to descend, allowing the hoisted upper precast structure to abut against the lower precast structure, thus completing the hoisting and in-situ pouring construction of the precast integrated utility tunnel.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The precast integrated utility tunnel casting device and its construction method of the present invention, during the hoisting process, through the cooperation of the centering positioning component and the support component, pushes and centers the upper precast body, which facilitates more precise placement of the upper precast body on the lower precast body. At the same time, it facilitates the adjustment of the distance between the upper precast body and the adjacent precast integrated utility tunnels, further facilitating subsequent pouring construction and grouting sealing. After adopting the device and method of the present invention, the quality and efficiency of precast integrated utility tunnel casting construction can be effectively improved. In addition, the device has a simple and reasonable structure, low cost, and can be dismantled after construction and reused for the construction of the next set of precast integrated utility tunnels. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the upper prefabricated body and the suspension rope structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the adjustment component structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the clamping assembly, pushing assembly, and guiding assembly of the present invention;

[0024] Figure 5 This is a schematic diagram of the centering positioning component and elastic component of the present invention;

[0025] Figure 6 This is a schematic diagram of the support component and telescopic component structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the rolling component structure of the present invention.

[0027] In the diagram: 101, lower precast body; 102, upper precast body; 103, lifting rope; 2, U-shaped plate; 301, fixing plate; 302, double-ended threaded pipe; 303, lead screw; 304, third sleeve; 305, third slide bar; 401, first clamping plate; 402, second clamping plate; 501, threaded sleeve; 502, threaded rod; 503, drive pin; 601, guide rod; 602, limiting plate; 701, L-shaped frame; 702, positioning plate; 703, inclined plate; 801, first sleeve; 802, first slide bar; 803, first spring; 901, support plate; 902, abutment plate; 1001, strip plate; 1002, second sleeve; 1003, second slide bar; 1004, second spring; 1101, spherical groove; 1102, ball bearing. Detailed Implementation

[0028] See Figure 1-7The present invention provides a precast integrated pipe gallery cast-in-place device, comprising a precast integrated pipe gallery, the precast integrated pipe gallery being composed of a lower precast body 101 and an upper precast body 102, the upper end of the upper precast body 102 being equipped with a hoisting rope 103 for assisting in the hoisting of the upper precast body 102, and further comprising;

[0029] Two sets of U-shaped plates 2 are used to be clamped and installed on the two side walls of the lower precast body 101. The four side walls of the two sets of U-shaped plates 2 are all vertically set and the U-shaped opening direction is horizontal. An adjustment component is set between the two sets of U-shaped plates 2 to assist in adjusting the distance between the two sets of U-shaped plates 2. A clamping component is set on the U-shaped plate 2 to clamp and fix it on one side of the lower precast body 101. A centering positioning component is symmetrically set on both sides of the U-shaped plate 2 to center and position the upper precast body 102 during the hoisting process. A support component is set on both sides of the U-shaped plate 2 to support the upper precast body 102 during the hoisting process.

[0030] The centering positioning component includes an L-shaped frame 701 fixed on one side of the U-shaped plate 2. The L-shaped frames 701 on the two sets of centering positioning components are symmetrically arranged, and the opposite side of the two is connected to a positioning plate 702 through an elastic component. The upper end of the positioning plate 702 is fixed with an inclined plate 703 for abutting against the lower end of the upper precast body 102.

[0031] During the cast-in-place construction of the precast integrated utility tunnel, the upper precast body 102 is hoisted onto the lower precast body 101. During the hoisting process, the upper precast body 102 is pushed and centered by the cooperation of the centering positioning component and the support component. This makes it easier for the upper precast body 102 to be hoisted onto the lower precast body 101 more accurately, and also makes it easier to adjust the distance between the upper precast body 102 and the adjacent precast integrated utility tunnel bodies 102, further facilitating subsequent pouring construction and grouting sealing.

[0032] Specifically, the elastic component includes multiple sets of first sleeves 801 fixed on the L-shaped frame 701. Each set of first sleeves 801 is slidably connected to a first slide rod 802. One end of the first slide rod 802 is fixed to one side of the positioning plate 702. A first spring 803 is sleeved on the outside of each set of first sleeves 801. The two ends of the first spring 803 are respectively connected to the L-shaped frame 701 and the positioning plate 702. The multiple sets of first sleeves 801 and first slide rods 802 facilitate the guidance of the movement of the positioning plate 702 after being subjected to force. The first springs 803 facilitate the reset movement of the positioning plate 702 after being subjected to force.

[0033] Specifically, the support components include a support plate 901 set above the L-shaped frame 701, a stop plate 902 prefabricated on the outer side of the upper precast body 102 for abutting against the end of the support plate 901 during hoisting, a telescopic component for raising and lowering the L-shaped frame 701 is provided on the L-shaped frame 701, and a rolling component for assisting the sliding during the support of the upper precast body 102 is provided at the upper end of the support plate 901.

[0034] Specifically, the telescopic assembly includes a strip plate 1001 fixed to the outside of the L-shaped frame 701. Multiple sets of second sleeves 1002 are fixed to the upper end of the strip plate 1001. A second slide rod 1003 is slidably connected to each set of second sleeves 1002. One end of the second slide rod 1003 is fixed to the lower end of the support plate 901. A second spring 1004 is sleeved on the outside of each set of second sleeves 1002. The two ends of the second spring 1004 are respectively connected to the support plate 901 and the strip plate 1001. Through the sliding guidance of the multiple second sleeves 1002 and the second slide rods 1003, the telescopic movement of the support plate 901 is facilitated. The second spring 1004 facilitates the auxiliary support of the support plate 901.

[0035] Specifically, the rolling assembly includes multiple sets of spherical grooves 1101 formed on the upper end of the support plate 901, and the multiple sets of spherical grooves 1101 are arranged at equal intervals on the support plate 901. Each set of spherical grooves 1101 is rotatably connected to a ball bearing 1102. During the hoisting and positioning process, the outer abutment plate 902 of the upper precast body 102 abuts against each of the balls bearing 1102 on the support plate 901 above the U-shaped plate 2. The balls bearing 1102 on the support plate 901 support the upper precast body 102 during the hoisting process. During the support process, the rolling action of multiple balls bearing 1102 inside the spherical grooves 1101 facilitates the movement of the upper precast body 102 during the hoisting and support process.

[0036] Specifically, the clamping assembly includes a first clamping plate 401 fixed to the inner side of the U-shaped plate 2, and a second clamping plate 402 connected to the U-shaped plate 2 via a pushing assembly. By pushing the assembly, the second clamping plate 402, after being subjected to force, abuts against the outer side of the lower preform 101. By the first clamping plate 401 and the second clamping plate 402 abutting against the inner and outer sides of the lower preform 101 respectively, the U-shaped plate 2 is fixed on the lower preform 101.

[0037] Specifically, the pushing assembly includes a threaded sleeve 501 fixed on the U-shaped plate 2, a threaded rod 502 threadedly engaged with the threaded sleeve 501, one end of the threaded rod 502 being rotatably connected to one side of the second clamping plate 402, and a driving pin 503 fixed to the end of the threaded rod 502 away from the second clamping plate 402. The U-shaped plate 2 is provided with a guide assembly for guiding the second clamping plate 402 during the pushing process; the guide assembly includes two sets of guide rods 601 slidably connected to the U-shaped plate 2, the two sets of guide rods 601 being located on both sides of the threaded sleeve 501 respectively. One end of each of the two sets of guide rods 601 is fixed to the second clamping plate 402, and the other end of the guide rods 601 is fixed to the limit plate 602. The threaded rod 502 is driven to rotate by the drive pin 503. During the rotation of the threaded rod 502, the second clamping plate 402 is driven to move by the mutual meshing transmission between the threaded rod 502 and the threaded sleeve 501. During the movement of the second clamping plate 402, the sliding guidance effect of the two sets of guide rods 601 causes the second clamping plate 402 to move towards or away from the lower precast body 101 after being subjected to force.

[0038] Specifically, the adjustment assembly includes a fixing plate 301 fixed to the end of the two sets of U-shaped plates 2 furthest from the opening. A double-threaded tube 302 is provided between the two sets of fixing plates 301. The threads at both ends of the double-threaded tube 302 are arranged in opposite directions. The two ends of the double-threaded tube 302 are threadedly connected to lead screws 303. The two ends of the two sets of lead screws 303 are respectively fixed to the two sets of fixing plates 301. A third sleeve 304 is provided between the two sets of fixing plates 301. The two ends of the third sleeve 304 are slidably connected to third slide rods 305. The two ends of the two sets of third slide rods 305 are respectively fixed to the two sets of fixing plates 301. The two sets of U-shaped plates 2 are respectively installed and fixed on both sides of the lower precast body 101. During the installation and fixing process, the double-threaded tube 302 is rotated. Since the threads at both ends of the double-threaded tube 302 are set in opposite directions, during the rotation of the double-threaded tube 302, the two sets of fixing plates 301 and U-shaped plates 2 are driven to move under force through the mutual meshing transmission between the double-threaded tube 302 and the two sets of lead screws 303. During the movement of the two sets of U-shaped plates 2, the sliding guide action of the third sleeve 304 and the third slide rod 305 causes the two sets of U-shaped plates 2 to move closer or further apart after being subjected to force, thereby adjusting the distance between the two sets of U-shaped plates 2, which facilitates the installation and fixing connection of the two sets of U-shaped plates 2 with the lower prefabricated body 101 of different shapes and sizes.

[0039] The construction process for using the aforementioned prefabricated integrated utility tunnel casting device can be referenced as follows:

[0040] During the cast-in-place construction of the precast integrated pipe gallery, two sets of U-shaped plates 2 are respectively installed and fixed on the two side walls of the lower precast body 101. During the installation and fixing process, the double-threaded pipe 302 is rotated. Since the threads at both ends of the double-threaded pipe 302 are set in opposite directions, during the rotation of the double-threaded pipe 302, the two sets of fixed plates 301 and U-shaped plates 2 are driven to move under force through the mutual meshing transmission between the double-threaded pipe 302 and the two sets of screws 303.

[0041] During the movement of the two sets of U-shaped plates 2, the sliding guide action of the third sleeve 304 and the third slide rod 305 causes the two sets of U-shaped plates 2 to move closer to each other or further away from each other after being subjected to force, thereby adjusting the distance between the two sets of U-shaped plates 2, which facilitates the installation and fixed connection of the two sets of U-shaped plates 2 with the lower precast body 101 of different shapes and sizes.

[0042] After the spacing between the two sets of U-shaped plates 2 is adjusted, the U-shaped plates 2 are pushed toward the lower preform 101. During the pushing process, the first clamping plate 401 abuts against the inner side of the lower preform 101. After the pushing is completed, the threaded rod 502 is driven to rotate by the drive pin 503. During the rotation of the threaded rod 502, the second clamping plate 402 is driven to move by the mutual meshing transmission between the threaded rod 502 and the threaded sleeve 501. During the movement of the second clamping plate 402, the sliding guidance of the two sets of guide rods 601 causes the second clamping plate 402 after being subjected to force to abut against the outer side of the lower preform 101. By the first clamping plate 401 and the second clamping plate 402 abutting against the inner and outer sides of the lower preform 101 respectively, the U-shaped plates 2 are fixed on the lower preform 101.

[0043] After the two sets of U-shaped plates 2 are installed and fixed on both sides of the lower precast body 101, the upper precast body 102 is hoisted onto the lower precast body 101 by the hoisting rope 103 and the external hoisting device. During the hoisting process, the lower end of the upper precast body 102 abuts against the inclined plates 703 of the two sets of positioning plates 702 on the U-shaped plate 2. During the abutting process, the two sets of inclined plates 703 and positioning plates 702 are pushed away from each other. As the upper precast body 102 continues to be hoisted, the first spring 803 on the elastic component pushes the positioning plates 702 against each other, so that the two sets of positioning plates 702 abut against the inner sides of the upper precast body 102 respectively, pushing the hoisted upper precast body 102 to be centered and positioned, so that the upper precast body 102 is hoisted onto the lower precast body 101 more accurately.

[0044] During the hoisting and positioning process, the outer abutment plate 902 of the upper precast body 102 abuts against each of the rollers 1102 of the upper support plate 901 of the U-shaped plate 2, and the upper precast body 102 is supported by the rollers 1102 on the support plate 901 during the hoisting process.

[0045] During the support process, the rolling action of multiple balls 1102 inside the spherical groove 1101 facilitates the movement of the upper precast body 102 during the support process. The movement of the upper precast body 102 facilitates the adjustment of the distance between the upper precast body 102 and the adjacent precast integrated pipe gallery, further facilitating subsequent pouring construction and grouting sealing.

[0046] During the support process, the gravity of the upper precast body 102 pushes the support plate 901 toward the strip plate 1001 to contract. The contraction of the support plate 901 helps to maintain support for the upper precast body 102. At the same time, the continuous descent of the upper precast body 102 causes the upper precast body 102 to collide with the lower precast body 101 after being hoisted, thus completing the hoisting and casting construction of the precast integrated pipe gallery.

[0047] In addition, to further ensure the stability of the construction operation, several support rods can be fixedly installed at the lower end of the U-shaped plate 2 before hoisting to prevent it from sliding and shifting during construction. Of course, the support rods can also be rotatably connected to the U-shaped plate 2. To facilitate height adjustment, the support rods can be positioned by means of threaded sleeves or hydraulic push rods.

[0048] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

[0049] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A prefabricated comprehensive pipe gallery cast-in-place device, characterized in that, The utility model relates to a comprehensive pipe gallery preform device and method, and belongs to the field of comprehensive pipe gallery construction. The utility model provides a comprehensive pipe gallery preform device, which comprises a lower preform (101) and an upper preform (102), the upper end of the upper preform (102) is provided with a lifting rope (103) for assisting in hoisting the upper preform (102), two groups of U-shaped plates (2) are arranged on the two side walls of the lower preform (101) and are clamped and installed, the four side walls of the two groups of U-shaped plates (2) are vertically arranged, the U-shaped opening direction of the two groups of U-shaped plates (2) is horizontal, an adjusting assembly is arranged between the two groups of U-shaped plates (2) for assisting in adjusting the spacing between the two groups of U-shaped plates (2), a clamping assembly is arranged on the U-shaped plate (2) for clamping and fixing on one side of the lower preform (101), a center positioning assembly is symmetrically arranged on the two sides of the U-shaped plate (2) for positioning the upper preform (102) in the hoisting process, and a supporting assembly is arranged on the two sides of the U-shaped plate (2) for supporting the upper preform (102) in the hoisting process. The center positioning assembly comprises an L-shaped frame (701) fixed on one side of the U-shaped plate (2), the two groups of center positioning assemblies are symmetrically arranged, and the opposite sides of the two groups of center positioning assemblies are connected with a positioning plate (702) through a elastic assembly, and the upper end of the positioning plate (702) is fixed with an inclined plate (703) for driving the lower end of the upper preform (102). The elastic assembly comprises a plurality of first sleeve pipes (801) fixed on the L-shaped frame (701), each group of first sleeve pipes (801) is slidably connected with a first sliding rod (802), one end of the first sliding rod (802) is fixed with one side of the positioning plate (702), the outer side of each group of first sleeve pipes (801) is sleeved with a first spring (803), and the two ends of the first spring (803) are connected with the L-shaped frame (701) and the positioning plate (702) respectively.

2. The prefabricated utility tunnel cast-in-place device according to claim 1, characterized in that: The supporting assembly comprises a supporting plate (901) arranged above the L-shaped frame (701), a resisting plate (902) is preformed on the outer side of the upper preform (102) and is used for abutting against the end of the supporting plate (901) in the hoisting process, a telescopic assembly is arranged on the L-shaped frame (701) and is used for lifting and retracting the L-shaped frame (701), and the upper end of the supporting plate (901) is provided with a rolling assembly for assisting in sliding of the upper preform (102) in the supporting process.

3. The prefabricated utility tunnel cast-in-place device according to claim 2, characterized in that: The telescopic assembly comprises a strip-shaped plate (1001) fixed on the outer side of the L-shaped frame (701), the upper end of the strip-shaped plate (1001) is fixed with a plurality of second sleeve pipes (1002), each group of second sleeve pipes (1002) is slidably connected with a second sliding rod (1003), one end of the second sliding rod (1003) is fixed with the lower end of the supporting plate (901), the outer side of each group of second sleeve pipes (1002) is sleeved with a second spring (1004), and the two ends of the second spring (1004) are connected with the supporting plate (901) and the strip-shaped plate (1001) respectively.

4. The prefabricated utility tunnel cast-in-place device according to claim 3, characterized in that: The rolling assembly comprises a plurality of spherical grooves (1101) formed in the upper end of the supporting plate (901), the plurality of spherical grooves (1101) are arranged at equal intervals on the supporting plate (901), and a rolling ball (1102) is rotatably connected in the spherical groove (1101).

5. The prefabricated utility tunnel cast-in-place device according to claim 4, characterized in that: ​ 6. The prefabricated utility tunnel cast-in-place device according to claim 5, characterized in that: The clamping assembly comprises a first clamping plate (401) fixed on the inner side of a U-shaped plate (2), and a second clamping plate (402) connected to the U-shaped plate (2) through a pushing assembly.

7. The prefabricated utility tunnel cast-in-place device according to claim 6, characterized in that: The pushing assembly comprises a threaded sleeve (501) fixed on the U-shaped plate (2), a threaded rod (502) threadedly engaged with the threaded sleeve (501), one end of the threaded rod (502) rotatably connected to one side of the second clamping plate (402), and a driving pin (503) fixed to the end of the threaded rod (502) away from the second clamping plate (402), and a guide assembly arranged on the U-shaped plate (2) for guiding the second clamping plate (402) during pushing.

8. The prefabricated utility tunnel cast-in-place device according to claim 7, characterized in that: The guide assembly comprises two groups of guide rods (601) slidably connected to the U-shaped plate (2), the two groups of guide rods (601) respectively located on the two sides of the threaded sleeve (501), one end of the two groups of guide rods (601) fixed to the second clamping plate (402), and the other end of the guide rods (601) fixed to a limiting plate (602).

9. The prefabricated utility tunnel cast-in-place device according to claim 8, characterized in that: The adjusting assembly comprises a fixed plate (301) fixed on the two groups of U-shaped plates (2) away from the opening end, a double-headed threaded tube (302) arranged between the two groups of fixed plates (301), the threads at the two ends of the double-headed threaded tube (302) oppositely arranged, a screw rod (303) threadedly engaged with the two ends of the double-headed threaded tube (302), the two ends of the two groups of screw rods (303) respectively fixed to the two groups of fixed plates (301), a third sleeve (304) arranged between the two groups of fixed plates (301), a third sliding rod (305) slidably connected to the two ends of the third sleeve (304), and the two ends of the two groups of third sliding rods (305) respectively fixed to the two groups of fixed plates (301).

10. A method for constructing a utility tunnel by using prefabricated utility tunnel, characterized in that, The device of claim 9 comprises the following specific contents: during the cast-in-place construction of the prefabricated utility tunnel, two groups of U-shaped plates (2) are respectively installed and fixed on the two side walls of the lower prefabricated body (101), and during the installation and fixation, the double-end threaded pipe (302) is rotated, the screw threads at the two ends of the double-end threaded pipe (302) are oppositely arranged, during the rotation of the double-end threaded pipe (302), the double-end threaded pipe (302) is respectively meshed and transmitted with the two groups of lead screws (303), and the two groups of fixed plates (301) and the U-shaped plates (2) are driven to move under stress; during the movement of the two groups of U-shaped plates (2), the third sleeve pipe (304) and the third sliding rod (305) are slidably guided, so that the two groups of U-shaped plates (2) under stress move towards each other or away from each other, the distance between the two groups of U-shaped plates (2) is adjusted, the two groups of U-shaped plates (2) are conveniently installed and fixedly connected with the lower prefabricated body (101) with different shapes and sizes; after the distance between the two groups of U-shaped plates (2) is adjusted, the U-shaped plates (2) are pushed towards the lower prefabricated body (101), during the pushing, the first clamping plate (401) abuts against the inner side of the lower prefabricated body (101), after the pushing is completed, the threaded rod (502) is driven to rotate by the driving pin (503), during the rotation of the threaded rod (502), the threaded rod (502) is meshed and transmitted with the threaded sleeve (501), the second clamping plate (402) is driven to move, during the movement of the second clamping plate (402), the two groups of guide rods (601) are slidably guided, so that the second clamping plate (402) under stress abuts against the outer side of the lower prefabricated body (101), the U-shaped plates (2) are fixed on the lower prefabricated body (101) through the abutment of the first clamping plate (401) and the second clamping plate (402) with the inner and outer sides of the lower prefabricated body (101); after the two groups of U-shaped plates (2) are respectively installed and fixed on the two sides of the lower prefabricated body (101), the upper prefabricated body (102) is hoisted and placed on the lower prefabricated body (101) through the hoisting rope (103) and the external hoisting device, during the hoisting, the lower end of the upper prefabricated body (102) abuts against the inclined plate (703) of the two groups of positioning plates (702) on the U-shaped plates (2), during the abutment, the two groups of inclined plates (703) and the positioning plates (702) are driven to move away from each other, and with the continuous hoisting of the upper prefabricated body (102), the two groups of positioning plates (702) are respectively abutted against the inner sides of the upper prefabricated body (102) through the abutment and pushing of the first spring (803) of the elastic assembly on the positioning plates (702), the hoisted upper prefabricated body (102) is pushed and positioned in the middle, so that the upper prefabricated body (102) is more accurately hoisted on the lower prefabricated body (101).In the process of hoisting positioning, the outer side of the upper prefabricated body (102) abuts against each ball (1102) of the upper support plate (901) of the U-shaped plate (2), and the upper prefabricated body (102) in the hoisting process is supported by the balls (1102) on the support plate (901); in the process of supporting, the movement of the upper prefabricated body (102) in the hoisting and supporting process is facilitated by the rolling action of the plurality of balls (1102) in the spherical grooves (1101), the movement of the upper prefabricated body (102) is facilitated, the distance between the upper prefabricated body (102) and the adjacent upper prefabricated body (102) on the prefabricated comprehensive pipe gallery is adjusted, and the subsequent pouring construction and glue filling sealing are facilitated; and in the process of supporting, the support plate (901) is pushed to shrink towards the strip-shaped plate (1001) by the gravity of the upper prefabricated body (102), the shrinkage movement of the support plate (901) is facilitated, the upper prefabricated body (102) is supported while the upper prefabricated body (102) continues to descend, the upper prefabricated body (102) after hoisting abuts against the lower prefabricated body (101), and the hoisting and cast-in-place construction of the prefabricated comprehensive pipe gallery is completed.

Images