A cable trench trolley for one-side construction in a tunnel and a construction method thereof

Abstract

The application discloses a cable trench trolley for unilateral construction in a tunnel and a construction method, relates to the technical field of tunnel construction, and can solve the problem that a cable trench cannot be simultaneously constructed in a short construction period during tunnel excavation. The cable trench trolley for unilateral construction in a tunnel comprises a trolley main body, a plurality of template transfer assemblies, a plurality of template assemblies corresponding to the template transfer assemblies, and a vibrating mechanism connected to the template transfer assemblies. The vibrating mechanism comprises a vibrating rod assembly. The vibrating rod assembly can be vertically lifted and moved back and forth along a direction perpendicular to the running direction of the trolley. The vibrating rod assembly has a vibrating state and a heating state. The template assembly comprises an outer template, a middle template box and an inner template box. The middle template box comprises a first top hole and a first heat conduction cavity. The inner template box comprises a second top hole and a second heat conduction cavity. The vibrating rod assembly can extend into the first heat conduction cavity through the first top hole or extend into the second heat conduction cavity through the second top hole.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction technology, specifically to a cable trench trolley for single-sided construction in a tunnel and its construction method. Background Technology

[0002] Currently, tunnel construction generally uses TBM excavation. In actual construction, due to tight schedules and other reasons, the overall plan often requires that other construction activities be carried out simultaneously with the TBM excavation, such as secondary lining and cast-in-place cable trench construction, in order to reduce the overall construction time. Currently, the track layout inside tunnels often adopts a "four-track, two-track" configuration, with a set of passing switches installed at intervals. This track layout also provides certain conveniences for the tunnel construction process.

[0003] For tunnels under TBM excavation, since the tunnel is not yet fully excavated, it is essential to ensure that at least one passageway within the tunnel is open for transporting construction materials and waste generated during TBM excavation. Therefore, when constructing cable trenches during TBM tunneling, construction can only be carried out on one side of the track. As a crucial component of railway tunnel structures, cable trenches need to be completed within a relatively short period to avoid delays. Traditional cast-in-place cable trench construction has two methods: one is manual formwork, where small, pre-fabricated templates are manually erected before concrete is poured. However, this method is difficult to meet the requirements of a short construction period. The other method is to use cable trench trolleys for cast-in-place construction. However, existing cable trench trolleys typically operate on both sides simultaneously, making them suitable only for open-air road construction environments or for post-construction work on fully excavated tunnels. They are not suitable for the special construction scenario where TBM tunneling and cable trench construction are carried out simultaneously within the tunnel.

[0004] Based on the above background, the inventors have designed a cable trench trolley for single-sided construction in tunnels and its construction method, which can solve at least one of the above problems. Therefore, this application is hereby filed. Summary of the Invention

[0005] The purpose of this application is to provide a cable trench trolley for single-sided construction in tunnels and its construction method, which solves the problem that cable trenches cannot be completed in a short period of time when at least one normal operating passage is maintained in the tunnel during TBM excavation.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following solution: On the one hand, this application provides a cable trench trolley for single-sided construction in a tunnel, including a trolley body, multiple sets of template transfer components that can be detachably fixed to one side of the trolley body, multiple sets of template components corresponding to the template transfer components, and a vibration mechanism connected to the template transfer components; The vibration mechanism includes several sets of vibrating rod assemblies arranged in parallel. The vibrating rod assemblies can be raised and lowered vertically and move back and forth on the template transfer assembly along the direction perpendicular to the travel direction of the trolley. The vibrating rod assemblies have switchable vibration and heating states. The template assembly includes an outer template connected to the trolley body via a template push cylinder, and a middle template box and an inner template box connected to the template transfer assembly and raised and lowered by the template transfer assembly. The middle template box includes a first top hole on its top and a first heat-conducting cavity inside it. The inner template box includes a second top hole on its top and a second heat-conducting cavity inside it. The vibrating rod assembly can be inserted into the first heat-conducting cavity through the first top hole or into the second heat-conducting cavity through the second top hole.

[0007] Optionally, the middle template box is provided with a plurality of first heat-conducting plates staggered on both sides of the first heat-conducting cavity, and first heat-conducting fins provided on both sides of the first heat-conducting plates. The first heat-conducting plates are staggered with the first top hole along the length direction of the middle template box. The inner template box is provided with several second heat-conducting plates that are staggered on both sides of the second heat-conducting cavity, and second heat-conducting fins that are provided on both sides of the second heat-conducting plates. The second heat-conducting plates are staggered with the second top hole along the length direction of the inner template box.

[0008] Optionally, the template assembly further includes a connecting seat located on the top of the middle template box and the inner template box, and a support rod and an adjustment assembly that are movably connected at both ends to the two connecting seats respectively; The adjustment assembly includes an adjustment sleeve and two adjusting screws with opposite directions of rotation that are threaded into the adjustment sleeve from both sides. The end of the adjusting screw away from the adjustment sleeve is connected to the connecting seat. The adjusting sleeve is provided with an adjusting hole for driving its rotation.

[0009] Optionally, the template transfer assembly includes a lifting bracket that is detachably connected and fixed to the top side of the trolley body, and a diagonal bracing cylinder that is rotatably connected to the side of the lifting bracket away from the trolley body. The inclined support cylinder has an output shaft for pressing against the tunnel sidewall; The template transfer assembly also includes a transfer cylinder for driving the middle template box and the inner template box to move vertically up and down. The bottom of the transfer cylinder is detachably and fixedly connected to the top of the middle template box or the inner template box, and the top of the transfer cylinder is slidably connected to the hoisting bracket in a direction perpendicular to the trolley body. The vibrating mechanism is located between the transfer cylinder and the main body of the trolley.

[0010] Optionally, the vibration mechanism further includes a lifting assembly for driving multiple sets of vibrating rod assemblies to move synchronously. The lifting assembly includes a lifting cylinder whose top is slidably connected to the template transfer assembly in a direction perpendicular to the main body of the trolley, and a lifting bracket connected to the bottom of the lifting cylinder. All sets of the vibrating rod assemblies are connected to the lifting support and are evenly distributed along the travel direction of the trolley body.

[0011] Optionally, the vibratory rod assembly includes an outer shell and an inner shell disposed within the outer shell, as well as a heating element and a connector; The heating element is disposed in the interlayer between the outer shell and the inner shell, and the heating element is fixedly attached to the outer shell. The top and bottom of the outer shell are provided with countersunk holes. The outer shell is connected and fixed to the inner shell through connectors provided in the countersunk holes, and the heating element is pressed and fixed.

[0012] Optionally, the inner shell is further provided with a cylindrical shell cavity; The vibrating rod assembly also includes an eccentric block and a mounting bearing disposed in the inner cavity of the housing, as well as a rotating shaft for driving the eccentric block to rotate; The eccentric block includes an eccentric section and bearing sections located on both sides of the eccentric section. The eccentric block is disposed within the mounting bearing through its bearing sections.

[0013] Optionally, a support hole is provided at the bottom of the inner cavity of the housing, and the bottom of the bearing section of the eccentric block on the side away from the rotating shaft is inserted into the support hole and rotatably connected to it.

[0014] Optionally, a hoisting mechanism is also provided on the top of the trolley body, and a frame channel is provided inside the trolley body; The hoisting mechanism includes a hydraulic telescopic boom and an electric hoist mounted on the hydraulic telescopic boom; It also includes a storage hopper located within and slidably connected to the frame channel, the storage hopper being detachably connected to the electric hoist; The outer template is connected to the electric hoist via a template transfer assembly.

[0015] Optionally, the two sides of the trolley body are also provided with cleaning water tanks, the opening width of the cleaning water tanks is greater than the outer diameter of the vibrating rod assembly, and the top height of the cleaning water tanks is flush with the top of the middle template box or the inner template box. It also includes a water supply assembly for supplying water to the cleaning water tank, the middle template box and the inner template box, the water supply assembly including a water supply tank located inside the trolley body.

[0016] On the other hand, this application provides a construction method applicable to any of the above-described cable trench trolleys used for unilateral construction in tunnels, specifically including the following steps: S1. Erecting the formwork assembly: After the main body of the trolley is moved into place, the outer formwork is pushed into place by the formwork pushing cylinder, and the middle formwork box and inner formwork box are lowered into place by the formwork transfer assembly, thus completing the erection of the formwork assembly and removing and separating the formwork transfer assembly from the main body of the trolley. S2. Concrete pouring: Pour concrete into the area after the formwork assembly is erected. After the vibrator assembly is moved above the area where the concrete has been poured, lower its position and insert it into the concrete. Then switch to vibration mode to vibrate the concrete. Repeat the above concrete pouring and vibration operations until the concrete in all areas is vibrated. During this process, heat-conducting liquid is simultaneously injected into the first and second heat-conducting cavities; S3. Vibrator cleaning: Move the vibrator assembly into the cleaning water tank and switch to vibration mode. Use the vibration mode of the vibrator assembly to remove the attached concrete slurry until all vibrator assembly components are cleaned. S4. Concrete curing: The heating state of the vibrator assembly is alternately used to heat the heat-conducting liquid in the first and second heat-conducting chambers and maintain the heat-conducting liquid within the preset temperature range. This keeps the middle formwork box and the inner formwork box within the preset temperature range to continuously heat and dry the concrete around them until the concrete meets the curing requirements. S5. Template assembly transfer: The heat-conducting liquid in the first and second heat-conducting chambers is pumped into the trolley body. At the same time, the template transfer assembly is connected and fixed to the trolley body. After the template transfer assembly is connected to the trolley body, the outer template is reset by the template push cylinder, and the middle template box and inner template box are reset by the template transfer assembly.

[0017] The beneficial effects of this invention are: I. This application adopts a detachable structural design concept and a single-sided installation spatial layout concept, that is, the template transfer component, the vibration mechanism and the template component are all located on one side of the trolley body, so that this application only occupies one track channel in the tunnel during cable trench construction. This layout ensures that the other channel is always unobstructed and is dedicated to the transportation of waste generated by TBM tunneling and the supply of construction materials. It realizes the spatial decoupling and parallel operation of TBM tunneling operation and cable trench cast-in-place construction, and avoids the complete blockage of tunnel traffic by traditional double-sided trolleys.

[0018] Furthermore, this detachable structural design utilizes the characteristic of cross-turns set at intervals within the tunnel. Through the hoisting mechanism on the main body of the trolley, after completing a section of cable trench on one side of the tunnel, the template transfer components and other structures only need to be disassembled from one side of the trolley body. The hoisting mechanism on the trolley body is then used to transfer and install them to the other side of the trolley body. Finally, the cross-turns are used to transfer them to the track channel on the other side of the tunnel, allowing cable trench construction to be carried out on the other side of the tunnel. This workflow, from component disassembly to hoisting and repositioning to the trolley crossing the cross-turns, allows the same trolley body to flexibly adapt to the cable trench construction needs on both sides of the tunnel. It fits the characteristics of long distances and bilateral symmetry in tunnels, greatly improving equipment utilization, reducing equipment idle time and transfer time, and shortening the overall construction cycle.

[0019] Therefore, this application, through its detachable structural design and single-sided installation spatial layout, can improve construction efficiency and shorten the construction cycle from an overall construction perspective.

[0020] II. The vibration mechanism designed in this application includes a vibrator assembly with switchable working states, which enables coordinated operation of multiple components throughout the construction process, thereby shortening the construction cycle of each section of the cable trench: During the concrete pouring stage, the vibrating rod assembly can be inserted into the concrete in batches for vibration. Combined with the formwork assembly to block the concrete, internal air bubbles can be eliminated. This not only ensures the quality of the concrete pouring but also guarantees that air bubbles will not block the heat transfer path during the subsequent concrete curing stage. During the concrete curing stage, the vibrating rod assembly can be inserted into the middle and inner formwork boxes to heat the heat-conducting liquid inside. Utilizing the metal material and high thermal conductivity of the middle and inner formwork boxes, the heat of the heat-conducting liquid is quickly transferred to the poured and vibrated concrete, allowing the concrete to be maintained within a certain temperature range and cured more quickly. This greatly shortens the construction cycle of each section of the cable trench.

[0021] Third, the detachable structural design of this application, as well as the design that allows for the injection and extraction of heat-conducting liquid into the middle and inner template boxes, enables this application to utilize the self-weight of the heat-conducting liquid to achieve dynamic counterweight of the trolley body, thus realizing the dual use of the heat-conducting liquid: Since the template transfer assembly, vibrating mechanism, and template assembly of this application are all located on one side of the trolley body, the center of gravity of the entire device is not located at the center of the trolley body. When the trolley body moves the template transfer assembly, vibrating mechanism, and template assembly along the track in the tunnel, the trolley body is extremely prone to tipping over. This application utilizes the process characteristic of disconnecting the template transfer assembly, template assembly, and other components from the trolley body after the template assembly erection stage. This ensures that the weight of the heat transfer liquid no longer acts on the trolley body at this point, avoiding ineffective lateral load on the trolley body when it is stationary. Furthermore, during the template assembly transfer stage, the weight of the template transfer assembly, template assembly, and other components is removed from the trolley body. After the new connection, the heat-conducting liquid can be drawn back into the trolley body, using its own weight to dynamically counterbalance the trolley body and offset the center of gravity shift caused by components such as the template assembly and template transfer assembly. This transfer of the heat-conducting liquid reduces the lateral weight of the trolley body and increases the weight of the trolley body at its own position. This increase and decrease in weight can effectively increase the stability of the trolley body when carrying the template transfer assembly, vibration mechanism and template assembly during transfer. In particular, this application also sets up a diagonal bracing cylinder that presses against the tunnel sidewall, so that this application ensures the stability of the trolley during track travel and operation through the positional change of liquid weight and the cooperation of mechanical support, effectively preventing overturning.

[0022] Fourth, the detachable structural design of this application allows the trolley body to correspond to multiple sets of formwork transfer components, vibration mechanisms, and formwork components. After one set of formwork transfer components and its corresponding formwork components are erected, the trolley body can be connected to another set of formwork components that have completed concrete curing and their corresponding vibration mechanisms and formwork transfer components, and then moved to the next position for formwork component erection. This design concept, in which one trolley body corresponds to multiple sets of formwork transfer components, vibration mechanisms, and formwork components, can realize parallel and streamlined operations for cable trench construction, thereby significantly improving construction speed and shortening the construction cycle.

[0023] In summary, this application shortens the long curing period by heating and solidifying the concrete curing process described above. It achieves parallel construction and improves construction speed through the cyclical operation of one vehicle with multiple modules. Furthermore, the single-sided spatial layout and detachable design allow for synchronous construction throughout the tunnel excavation process, shortening the overall construction period. Therefore, this application achieves a reduction in the entire construction cycle from the overall, organizational, and procedural levels. In addition, based on the optimization at the procedural level, it also solves the problem of counterweight optimization caused by the single-sided weight of the trolley body, improving the overall stability of the trolley body operation. Attached Figure Description

[0024] Figure 1This is a structural diagram of Embodiment 1 of this application during construction on one side of the tunnel.

[0025] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0026] Figure 3 This is a structural diagram of Embodiment 1 of this application during construction on the other side of the tunnel.

[0027] Figure 4 This is a top view of the structure during construction on one side of the tunnel according to Embodiment 1 of this application.

[0028] Figure 5 This is a cross-sectional view of the template box in Embodiment 1 of this application.

[0029] Figure 6 This is a cross-sectional view of the vibratory rod assembly in Embodiment 1 of this application.

[0030] Figure 7 for Figure 6 A magnified view of a portion of point B in the middle.

[0031] Figure 8 This is a schematic diagram of the construction process for Embodiment 2 of this application.

[0032] Figure labeling: 1-Trolley body, 101-Frame channel, 11-Washing water tank, 12-Formwork jacking cylinder, 2-Storage hopper, 21-Channel, 3-Lifting mechanism, 31-Hydraulic telescopic boom, 32-Electric hoist, 33-Steel cable, 4-Vibrator assembly, 41-Outer shell, 411-Countersunk hole, 42-Heating element, 43-Inner shell, 431-Inner cavity of shell, 432-Support hole, 44-Eccentric block, 441-Eccentric section, 442-Bearing section, 45-Bearing installation, 46-Shaft, 47-Connector, 5-Formwork transfer assembly, 51-Lifting bracket, 52-Diagonal brace cylinder, 53-Tunnel guide rail, 54-Transfer cylinder, 6-Formwork assembly, 6 1-Outer template, 62-Middle template box, 621-First heat-conducting cavity, 622-First top hole, 623-First step, 624-First heat-conducting plate, 625-First heat-conducting fin, 63-Inner template box, 631-Second heat-conducting cavity, 632-Second top hole, 633-Second step, 634-Second heat-conducting plate, 635-Second heat-conducting fin, 64-Support rod, 641-Limiting shaft, 65-Adjusting assembly, 651-Adjusting sleeve, 652-Adjusting screw, 653-Adjusting hole, 66-Connecting seat, 661-Strip hole, 7-Water supply assembly, 71-Water supply tank, 72-Water supply pipe, 8-Lifting assembly, 81-Lifting cylinder, 82-Lifting bracket, 9-Material transport vehicle. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0034] Example 1: like Figures 1 to 7 As shown, this embodiment provides a cable trench trolley for single-sided construction in a tunnel, including a trolley body 1, multiple sets of template transfer components 5 that are detachably fixed to one side of the trolley body 1, multiple sets of template components 6 corresponding to the template transfer components 5, and a vibration mechanism connected to the template transfer components 5. The vibration mechanism includes several sets of vibrating rod assemblies 4 arranged in parallel. The vibrating rod assemblies 4 can be raised and lowered vertically and move back and forth on the template transfer assembly 5 in a direction perpendicular to the travel direction of the trolley. The vibrating rod assemblies 4 have switchable vibration and heating states. The template assembly 6 includes an outer template 61 connected to the trolley body 1 via a template push cylinder 12, and a middle template box 62 and an inner template box 63 connected to the template transfer assembly 5 and raised and lowered via the template transfer assembly 5. The middle template box 62 includes a first top hole 622 on its top and a first heat-conducting cavity 621 inside it. The inner template box 63 includes a second top hole 632 on its top and a second heat-conducting cavity 631 inside it. The vibrating rod assembly 4 can extend into the first heat-conducting cavity 621 through the first top hole 622 or into the second heat-conducting cavity 631 through the second top hole 632.

[0035] In this embodiment, the vibrator assembly 4 can switch between vibration and heating states, breaking the limitation that traditional vibrator assemblies 4 are usually only used for vibrating concrete. It can extend into the first heat-conducting cavity 621 through the first top hole 622 and into the second heat-conducting cavity 631 through the second top hole 632. After injecting heat-conducting liquid into the first and second heat-conducting cavities 621 and 631, the middle formwork box 62 and the inner formwork box 63 can be heated as a whole, thereby uniformly heating and fixing the vibrated concrete. This avoids the problem of uneven heating caused by the vibrator assembly 4 directly heating the concrete, and can effectively shorten the concrete curing cycle. The heat-conducting liquid in this embodiment is liquid water, which is easy to obtain and has a large specific heat capacity.

[0036] In this embodiment, the outer formwork 61 only serves to support and constrain the concrete. Since water molecules are present in the concrete, heating the concrete using the middle formwork box 62 and the inner formwork box 63 can raise the overall temperature of the concrete and accelerate its curing. The temperature of the heat-conducting liquid is easy to monitor. At the same time, due to its large specific heat capacity, the overall temperature change rate is slow, avoiding the adverse effects of sudden temperature rises and falls on the concrete curing.

[0037] In this embodiment, the middle template box 62 is provided with a plurality of first heat-conducting plates 624 that are staggered on both sides of the first heat-conducting cavity 621, and first heat-conducting fins 625 that are provided on both sides of the first heat-conducting plates 624. The first heat-conducting plates 624 are staggered with the first top hole 622 along the length direction of the middle template box 62. The inner template box 63 is provided with a plurality of second heat-conducting plates 634 arranged alternately on both sides of the second heat-conducting cavity 631, and second heat-conducting fins 635 arranged on both sides of the second heat-conducting plates 634. The second heat-conducting plates 634 are arranged alternately with the second top hole 632 along the length direction of the inner template box 63.

[0038] In this embodiment, by setting a first heat-conducting plate 624 and a first heat-conducting fin 625, as well as a second heat-conducting plate 634 and a second heat-conducting fin 635, the contact area between the heat-conducting liquid and the inner wall of the template is greatly increased. The first heat-conducting plate 624 is staggered on both sides of the first heat-conducting cavity 621, and the first heat-conducting plate 624 is staggered with the first top hole 622 along the length direction of the middle template box 62. The second heat-conducting plate 634 is staggered on both sides of the second heat-conducting cavity 631, and the second heat-conducting plate 634 is staggered with the second top hole 632 along the length direction of the inner template box 63. This allows the vibrating rod assembly 4 to uniformly heat the heat-conducting liquid after being inserted through the first top hole 622 or the second top hole 632, minimizing the temperature difference of the heat-conducting liquid, ensuring a consistent temperature throughout the concrete section, improving curing quality, and preventing cracks caused by temperature differences.

[0039] In this embodiment, a temperature sensor for detecting the temperature of the heat-conducting liquid is also provided in the first heat-conducting cavity 621 and the second heat-conducting cavity 631 to prevent the temperature of the heat-conducting liquid from exceeding a preset range.

[0040] In this embodiment, the template assembly 6 further includes a connecting seat 66 disposed on the top of the middle template box 62 and the inner template box 63, and a support rod 64 and an adjustment assembly 65 that are movably connected at both ends to the two connecting seats 66 respectively; The adjustment assembly 65 includes an adjustment sleeve 651 and two adjustment screws 652 with opposite directions of rotation that are threaded from both sides of the adjustment sleeve 651 into the adjustment sleeve 651. The end of the adjustment screw 652 away from the adjustment sleeve 651 is connected to the connecting seat 66. The adjusting sleeve 651 is provided with an adjusting hole 653 for driving its rotation.

[0041] In this embodiment, the connecting seat 66 is provided with a strip hole 661. The length direction of the strip hole 661 is the same as the length direction of the support rod 64. The support rod 64 is provided with two limiting shafts 641 located in the strip hole 661. By setting the support rod 64 and the limiting shafts 641 of the support rod 64 being located in the strip hole 661 of the connecting seat 66, when the transfer cylinder 54 of the template transfer assembly 5 drives the inner template box 63 to rise and fall, the middle template box 62 can be synchronously raised and lowered through the support rod 64. The setting of the strip hole 661 allows the distance between the inner template box 63 and the middle template box 62 to be finely adjusted by the adjustment assembly 65.

[0042] In this embodiment, a first step 623 is provided on the top of the middle formwork box 62 near the inner formwork box 63, and a second step 633 is provided on the top of the inner formwork box 63 near the middle formwork box 62. By providing the first step 623 and the second step 633, a cover plate can be placed after the concrete is poured to prevent surface damage during the concrete curing process and to accelerate the curing process. Similarly, a cover plate can also be set between the middle formwork box 62 and the outer formwork 61 after the concrete is poured. Technicians can set it as needed, which will not be elaborated here.

[0043] In this embodiment, when adjusting the distance between the inner formwork box 63 and the middle formwork box 62, a tool such as a plunger can be inserted into the adjustment hole 653, and the plunger can be turned to drive the adjustment sleeve 651 to rotate along its central axis. This allows the two adjustment screws 652 to move closer or further apart, thereby causing the middle formwork box 62 and the inner formwork box 63 to move closer or further apart, thus facilitating the adjustment of the positions of the middle formwork box 62 and the inner formwork box 63. At the same time, when removing the middle formwork box 62 and the inner formwork box 63, the adjustment component 65 can be used to detach the middle formwork box 62 and the inner formwork box 63 from the concrete first, and then the transfer cylinder 54 of the formwork transfer component 5 can be used to lift them away, thus avoiding quality problems caused by forcibly peeling off the concrete.

[0044] In this embodiment, the template transfer assembly 5 includes a hoisting bracket 51 that is detachably connected and fixed to the top side of the trolley body 1, and a diagonal support cylinder 52 that is rotatably connected to the hoisting bracket 51 on the side away from the trolley body 1. The inclined support cylinder 52 has an output shaft for pressing against the tunnel sidewall; The template transfer assembly 5 also includes a transfer cylinder 54 for driving the middle template box 62 and the inner template box 63 to move vertically. The bottom of the transfer cylinder 54 is detachably and fixedly connected to the top of the middle template box 62 or the inner template box 63, so that the vibration mechanism can be transferred between the middle template box 62 and the inner template box 63 to vibrate the concrete between the middle template box 62 and the inner template box 63. The top of the transfer cylinder 54 is slidably connected to the hoisting bracket 51 in a direction perpendicular to the trolley body 1. The vibrating mechanism is located between the transfer cylinder 54 and the trolley body 1.

[0045] In this embodiment, as Figure 1 As shown, tunnel guide rails 53 are also provided on the sidewalls of the tunnel, and rollers are provided at the output shaft end of the inclined support cylinder 52 within the tunnel guide rail 53. This allows the output shaft of the inclined support cylinder 52 to roll within the tunnel guide rail 53 when the trolley body 1 moves on the track, thus providing continuous support. Furthermore, the inclined support cylinder 52 also serves as an auxiliary positioning device, preventing displacement of the formwork assembly 6 due to the lateral pressure generated during concrete pouring. In this embodiment, the rollers at the output shaft end of the inclined support cylinder 52 are made of high-strength steel to ensure they can withstand large loads without deformation.

[0046] In this embodiment, the vibration mechanism further includes a lifting assembly 8 for driving multiple sets of vibrating rod assemblies 4 to move synchronously. The lifting assembly 8 includes a lifting cylinder 81 whose top is slidably connected to the template transfer assembly 5 in a direction perpendicular to the trolley body 1, and a lifting bracket 82 connected to the bottom of the lifting cylinder 81. Multiple sets of the vibrating rod assemblies 4 are all connected to the lifting support 82 and are evenly distributed along the traveling direction of the trolley body 1.

[0047] In this embodiment, multiple sets of vibrating rod assemblies 4 are evenly distributed on the lifting support 82 and are driven to lift synchronously by the lifting cylinder 81. This ensures that all vibrating rod assemblies 4 can be inserted into or pulled out of the concrete at the same time during vibration, avoiding uneven vibration or missed vibration caused by different heights. When the vibrating rod assemblies 4 are heated, it can also ensure that all vibrating rod assemblies 4 can be inserted into the first heat-conducting cavity 621 or the second heat-conducting cavity 631 at the same time, avoiding the problem of uneven temperature of the heat-conducting liquid at different locations.

[0048] In this embodiment, as Figure 6 and Figure 7 As shown, the vibrating rod assembly 4 includes an outer shell 41 and an inner shell 43 disposed within the outer shell 41, as well as a heating element 42 and a connector 47; The heating element 42 is disposed in the interlayer between the outer shell 41 and the inner shell 43, and the heating element 42 is fixedly attached to the outer shell 41. The outer shell 41 is provided with countersunk holes 411 at the top and bottom. The outer shell 41 is connected and fixed to the inner shell 43 by a connector 47 provided in the countersunk hole 411, which presses and fixes the heating element 42.

[0049] In this embodiment, the connector 47 is a countersunk bolt, and the outer shell 41 is made of a metal material with good thermal conductivity. The surface needs to be polished to ensure that concrete material is difficult to adhere to the surface of the outer shell 41. Or even if concrete adheres, it can be easily removed by the vibration state of the vibrating rod assembly 4 after it is inserted into clean water, thus avoiding a large amount of concrete adhering to the vibrating rod assembly 4 from mixing into the heat-conducting liquid.

[0050] In this embodiment, the heating element 42 is a resistive heating element 42. It can be heated by passing electricity to the heating element 42. After the heating element 42 is heated, its heat can be conducted out through the outer shell 41 because it is tightly attached to the inner wall of the outer shell 41.

[0051] In this embodiment, the outer shell 41 is connected and fixed to the inner shell 43 by a connector 47 provided in the countersunk hole 411, and the heating element 42 is pressed and fixed, so that both the outer shell 41 and the heating element 42 can be disassembled, which facilitates the later maintenance of the vibrating rod assembly 4.

[0052] In this embodiment, the vibrating rod assembly 4 also includes a pipe (not shown in the figure) with a sandwiched through hole, a rotating shaft 46 is disposed in the pipe and used to drive the eccentric block 44 to rotate in the inner shell 43, and the conductive wire of the heating element 42 is disposed in the sandwiched through hole.

[0053] In this embodiment, a cylindrical shell cavity 431 is also provided inside the inner shell 43; The vibrating rod assembly 4 also includes an eccentric block 44 and a mounting bearing 45 disposed in the inner cavity 431 of the housing, and a rotating shaft 46 for driving the eccentric block 44 to rotate. The eccentric block 44 includes an eccentric section 441 and bearing sections 442 located on both sides of the eccentric section 441. The eccentric block 44 is disposed in the mounting bearing 45 through its bearing sections 442.

[0054] In this embodiment, the eccentric block 44 is disposed in the mounting bearing 45 through its bearing section 442, which can improve the stability of the eccentric block 44 when rotating. The eccentric block 44, the rotating shaft 46 and other structures in this embodiment are all existing conventional technologies, and will not be described in detail here.

[0055] In this embodiment, the vibrating rod assembly 4 also includes a drive motor for driving the rotating shaft 46 to rotate, and the drive motors are all invertedly mounted on the lifting bracket 82.

[0056] In this embodiment, a support hole 432 is also provided at the bottom of the inner cavity 431 of the housing. The bearing section 442 of the eccentric block 44 on the side away from the rotating shaft 46 is inserted into the support hole 432 and rotatedly connected to it. By providing a support hole 432 at the bottom of the inner cavity 431 of the housing, the stability of the rotation of the eccentric block 44 can be further improved.

[0057] In this embodiment, a hoisting mechanism 3 is also provided on the top of the trolley body 1, and a frame channel 101 is provided inside the trolley body 1; The hoisting mechanism 3 includes a hydraulic telescopic boom 31 and an electric hoist 32 mounted on the hydraulic telescopic boom 31; It also includes a storage hopper 2 located in and slidably connected to the frame channel 101, and the storage hopper 2 is detachably connected to the electric hoist 32; The outer template 61 is connected to the electric hoist 32 via the template transfer assembly 5.

[0058] In this embodiment, the trolley body 1 is provided with two placement platforms located in the frame channel 101. In this embodiment, the electric hoist 32 is provided with a steel cable 33, and the storage hopper 2 is connected to the electric hoist 32 through the steel cable 33. The hoisting mechanism 3 in this embodiment is a common existing mechanical component. When the storage hopper 2 needs to be filled, the hydraulic telescopic boom 31 can be extended forward to make the storage hopper 2 slide in the frame channel 101 until it slides out of the frame channel 101 and moves to the placement platform of the trolley body 1. At this time, the material transport vehicle 9 can move to the trolley body 1 through another track channel of the tunnel and pump the precast concrete into the storage hopper 2. In this embodiment, the setting of the storage hopper 2 enables the trolley body 1 of this embodiment to have a certain concrete storage capacity, which can avoid the frequent feeding of concrete by the concrete delivery vehicle and avoid the interruption of concrete pouring due to lack of material, ensuring smooth operation of construction and avoiding invalid waiting time for materials.

[0059] In this embodiment, the bottom of the storage hopper 2 is also provided with a chute 21. There are at least two chutes 21 and they face the two sides of the trolley body 1 respectively, so as to adapt to the same trolley body 1 to carry out construction of cable trenches on both sides of the tunnel.

[0060] In this embodiment, the two sides of the trolley body 1 are also provided with cleaning water tanks 11. The opening width of the cleaning water tank 11 is greater than the outer diameter of the vibrating rod assembly 4, and the top height of the cleaning water tank 11 is flush with the top of the middle template box 62 or the inner template box 63. It also includes a water supply assembly 7 for supplying water to the cleaning water tank 11, the middle formwork box 62, and the inner formwork box 63. The water supply assembly 7 includes a water supply tank 71 located inside the trolley body 1. In this embodiment, by setting up the cleaning water tank 11, the vibrator can be directly moved to the cleaning water tank 11 after vibration is completed, and the cement slurry adhering to it can be cleaned by the vibration state (vibration) combined with the water flow. The water tank is flush with the formwork box, which facilitates the horizontal movement of the vibrator into the tank.

[0061] In this embodiment, the water supply assembly 7 further includes at least two water supply pipes 72, one of which is used to supply clean water to the cleaning water tank 11, the first heat conduction cavity 621, and the second heat conduction cavity 631, and the other is used to pump the clean water in the first heat conduction cavity 621 and the second heat conduction cavity 631 back to the water supply tank 71.

[0062] Example 2: like Figure 8 As shown, this embodiment provides a construction method applicable to the cable trench trolley used for single-sided construction in a tunnel as described in Embodiment 1, specifically including the following steps: S1, Erecting the formwork assembly 6: After the trolley body 1 moves into place, the outer formwork 61 is pushed into place by the formwork pushing cylinder 12, and the middle formwork box 62 and the inner formwork box 63 are lowered into place by the formwork transfer assembly 5, thus completing the erection of the formwork assembly 6 and removing and separating the formwork transfer assembly 5 from the trolley body 1. In this embodiment, the middle template box 62 and the inner template box 63 are provided with connecting seats 66 on their tops, and support rods 64 are provided between the connecting seats 66. Therefore, the transfer cylinder 54 can drive the middle template box 62 and the inner template box 63 to rise and fall synchronously. In this embodiment, the transfer cylinder 54 is set vertically. S2. Concrete pouring: Pour concrete into the area after the formwork assembly 6 is erected. After the vibrator assembly 4 is moved above the area after the concrete is poured, lower its position and insert it into the concrete. Then switch to the vibration mode to vibrate the concrete. Repeat the above concrete pouring and vibration operations until the concrete vibration of all areas is completed. During this process, heat-conducting liquid is simultaneously injected into the first heat-conducting cavity 621 and the second heat-conducting cavity 631. In this embodiment, after the trolley body 1 is separated from the template transfer assembly 5 in S1, it can move to another set of template transfer assemblies 5 that need to be transferred to complete the connection between the trolley body 1 and another set of template transfer assemblies 5. At the same time, during the connection process between the template transfer assembly 5 and the trolley body 1, the heat-conducting liquid in the template assembly 6 also needs to be pumped back into the water supply tank 71 of the trolley body 1 to ensure that the overall center of gravity of the trolley body 1 shifts back to the center of the trolley body 1 after connecting the template transfer assembly 5, thereby reducing the support pressure of the inclined support cylinder 52 and improving the stability of the trolley body 1 during the movement process, and avoiding the overturning. S3. Cleaning the vibrator: Move the vibrator assembly 4 into the cleaning water tank 11 and switch to the vibration state. Use the vibration state of the vibrator assembly 4 to remove the attached concrete slurry until all the vibrator assembly 4 is cleaned. S4. Concrete curing: The heating states of the vibrator assembly 4 are alternately used to heat the heat-conducting liquid in the first heat-conducting cavity 621 and the second heat-conducting cavity 631, and the heat-conducting liquid is maintained within the preset temperature range. This keeps the middle formwork box 62 and the inner formwork box 63 within the preset temperature range to continuously keep the concrete around them warm and dry until the concrete meets the curing requirements. In this embodiment, the preset temperature of the heat-conducting liquid is in the range of 50 degrees to 70 degrees. S5. Template assembly 6 transfer: The heat-conducting liquid in the first heat-conducting cavity 621 and the second heat-conducting cavity 631 is pumped into the trolley body 1. At the same time, the template transfer assembly 5 is connected and fixed to the trolley body 1. After the connection between the template transfer assembly 5 and the trolley body 1 is completed, the outer template 61 is reset by the template push cylinder 12, and the middle template box 62 and the inner template box 63 are reset by the template transfer assembly 5. In this embodiment, the hoisting bracket 51 for transferring the template assembly 6 is connected and fixed to the side top of the trolley body 1 by bolts, which facilitates disassembly.

[0063] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A cable trench trolley for single-sided construction in a tunnel, comprising a trolley body (1), characterized in that, It also includes multiple sets of template transfer components (5) that can be detachably fixed to one side of the trolley body (1), as well as multiple sets of template components (6) corresponding to the template transfer components (5) and a vibration mechanism connected to the template transfer components (5); The vibration mechanism includes several sets of vibrating rod assemblies (4) arranged in parallel. The vibrating rod assembly (4) can be raised and lowered vertically and moved back and forth on the template transfer assembly (5) in a direction perpendicular to the travel direction of the trolley. The vibrating rod assembly (4) has a switchable vibration state and a heating state. The template assembly (6) includes an outer template (61) connected to the trolley body (1) via a template push cylinder (12), and a middle template box (62) and an inner template box (63) connected to the template transfer assembly (5) and lifted by the template transfer assembly (5). The middle template box (62) includes a first top hole (622) on its top and a first heat-conducting cavity (621) inside it. The inner template box (63) includes a second top hole (632) on its top and a second heat-conducting cavity (631) inside it. The vibrating rod assembly (4) can extend into the first heat-conducting cavity (621) through the first top hole (622) or into the second heat-conducting cavity (631) through the second top hole (632). The template transfer assembly (5) includes a lifting bracket (51) that is detachably connected and fixed to the top side of the trolley body (1), and a slanted support cylinder (52) that is rotatably connected to the side of the lifting bracket (51) away from the trolley body (1). The inclined support cylinder (52) has an output shaft for pressing against the tunnel sidewall; The template transfer assembly (5) also includes a transfer cylinder (54) for driving the middle template box (62) and the inner template box (63) to rise and fall vertically. The bottom of the transfer cylinder (54) is detachably and fixedly connected to the top of the middle template box (62) or the inner template box (63), and the top of the transfer cylinder (54) is slidably connected to the hoisting bracket (51) in a direction perpendicular to the trolley body (1). The vibrating mechanism is located between the transfer cylinder (54) and the trolley body (1); The vibrating rod assembly (4) includes an outer shell (41) and an inner shell (43) disposed within the outer shell (41), as well as a heating element (42) and a connector (47). The heating element (42) is disposed in the interlayer between the outer shell (41) and the inner shell (43), and the heating element (42) is fixedly attached to the outer shell (41); The outer shell (41) is provided with countersunk holes (411) at the top and bottom. The outer shell (41) is connected and fixed to the inner shell (43) by a connector (47) provided in the countersunk hole (411) and the heating element (42) is pressed and fixed.

2. The cable trench trolley for single-sided construction in a tunnel according to claim 1, characterized in that, The middle template box (62) is provided with a plurality of first heat-conducting plates (624) arranged alternately on both sides of the first heat-conducting cavity (621), and first heat-conducting fins (625) arranged on both sides of the first heat-conducting plates (624). The first heat-conducting plates (624) are arranged alternately with the first top hole (622) along the length direction of the middle template box (62). The inner template box (63) is provided with a plurality of second heat-conducting plates (634) arranged alternately on both sides of the second heat-conducting cavity (631), and second heat-conducting fins (635) arranged on both sides of the second heat-conducting plates (634). The second heat-conducting plates (634) are arranged alternately with the second top hole (632) along the length direction of the inner template box (63).

3. The cable trench trolley for single-sided construction in a tunnel according to claim 1, characterized in that, The template assembly (6) also includes a connecting seat (66) located on the top of the middle template box (62) and the inner template box (63), as well as a support rod (64) and an adjustment assembly (65) that are movably connected at both ends to the two connecting seats (66). The adjustment assembly (65) includes an adjustment sleeve (651) and two adjustment screws (652) with opposite directions of rotation that are threaded from both sides of the adjustment sleeve (651) into the adjustment sleeve (651). The end of the adjustment screw (652) away from the adjustment sleeve (651) is connected to the connecting seat (66). The adjusting sleeve (651) is provided with an adjusting hole (653) for driving its rotation.

4. The cable trench trolley for single-sided construction in a tunnel according to claim 1, characterized in that, The vibrating mechanism also includes a lifting assembly (8) for driving multiple sets of vibrating rod assemblies (4) to move synchronously. The lifting assembly (8) includes a lifting cylinder (81) whose top is slidably connected to the template transfer assembly (5) in a direction perpendicular to the trolley body (1), and a lifting bracket (82) connected to the bottom of the lifting cylinder (81). Multiple sets of the vibratory rod assemblies (4) are connected to the lifting support (82) and are evenly distributed along the travel direction of the trolley body (1).

5. A cable trench trolley for single-sided construction in a tunnel according to claim 1, characterized in that, The inner shell (43) is also provided with a cylindrical shell cavity (431). The vibrating rod assembly (4) also includes an eccentric block (44) and a mounting bearing (45) disposed in the inner cavity (431) of the housing, and a rotating shaft (46) for driving the eccentric block (44) to rotate. The eccentric block (44) includes an eccentric section (441) and bearing sections (442) located on both sides of the eccentric section (441). The eccentric block (44) is disposed in the mounting bearing (45) through its bearing sections (442).

6. A cable trench trolley for single-sided construction in a tunnel according to claim 1, characterized in that, The top of the trolley body (1) is also provided with a hoisting mechanism (3), and the trolley body (1) has a frame channel (101). The hoisting mechanism (3) includes a hydraulic telescopic boom (31) and an electric hoist (32) mounted on the hydraulic telescopic boom (31). It also includes a storage hopper (2) located in and slidably connected to the frame channel (101), and the storage hopper (2) is detachably connected to the electric hoist (32); The outer template (61) is connected to the electric hoist (32) via the template transfer assembly (5).

7. A cable trench trolley for single-sided construction in a tunnel according to claim 1, characterized in that, The main body (1) of the trolley is also provided with a cleaning water tank (11) on both sides. The opening width of the cleaning water tank (11) is greater than the outer diameter of the vibrating rod assembly (4). The top height of the cleaning water tank (11) is flush with the top of the middle template box (62) or the inner template box (63). It also includes a water supply assembly (7) for supplying water to the cleaning water tank (11), the middle template box (62) and the inner template box (63), the water supply assembly (7) including a water supply tank (71) located in the trolley body (1).

8. A construction method applicable to the cable trench trolley for single-sided construction in a tunnel as described in any one of claims 1 to 7, characterized in that, Specifically, the following steps are included: S1, Erecting the formwork assembly (6): After the trolley body (1) moves into place, the outer formwork (61) is pushed into place by the formwork pushing cylinder (12), and the middle formwork box (62) and inner formwork box (63) are lowered into place by the formwork transfer assembly (5), thus completing the erection of the formwork assembly (6) and removing and separating the formwork transfer assembly (5) from the trolley body (1); S2, Concrete pouring: Pour concrete into the area after the formwork assembly (6) is erected. After the vibrator assembly (4) is moved above the area after the concrete pouring is completed, lower the position and insert it into the concrete. Then switch to the vibration state to vibrate the concrete. Repeat the concrete pouring and vibration operation until the concrete vibration of all areas is completed. During this process, heat-conducting liquid is simultaneously injected into the first heat-conducting cavity (621) and the second heat-conducting cavity (631); S3. Cleaning the vibrator: Move the vibrator assembly (4) into the cleaning water tank (11) and switch to the vibration state. Use the vibration state of the vibrator assembly (4) to remove the attached concrete slurry until all the vibrator assemblies (4) are cleaned. S4. Concrete curing: The heating states of the vibrating rod assembly (4) are alternately used to heat the heat-conducting liquid in the first heat-conducting cavity (621) and the second heat-conducting cavity (631), and the heat-conducting liquid is kept within the preset temperature range. This keeps the middle formwork box (62) and the inner formwork box (63) within the preset temperature range to continuously heat-keep and dry the concrete around them until the concrete meets the curing requirements. S5, Template assembly (6) transfer: The heat-conducting liquid in the first heat-conducting cavity (621) and the second heat-conducting cavity (631) is pumped into the trolley body (1), and the template transfer assembly (5) is connected and fixed to the trolley body (1). After the template transfer assembly (5) and the trolley body (1) are connected, the outer template (61) is reset by the template push cylinder (12), and the middle template box (62) and the inner template box (63) are reset by the template transfer assembly (5).

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