Full-circle needle beam bottom arch slip form lining trolley

Abstract

The invention discloses a full-circle needle beam bottom arch slip form lining trolley, and relates to the technical field of tunnel construction machinery. The full-circle needle beam bottom arch slip form lining trolley comprises a trolley body, an outer formwork is arranged outside the trolley body, a truss type needle beam is arranged inside the trolley body, a connecting portal is arranged between the truss type needle beam and the trolley body and slides along the truss type needle beam, and a telescopic beam base is arranged at the bottom of the truss type needle beam. Firstly, a template is installed on a certain section of bin position, positioning inspection is conducted, concrete is poured after the bin position is positioned and accepted to be qualified, then the telescopic beam base is shortened, the truss type needle beam moves forwards relative to the trolley body, the telescopic beam base is stretched to serve as a support after the telescopic beam base moves in place, and then the trolley body moves forwards relative to the truss type needle beam. And after moving to the next bin position, mounting a template. According to the full-circle needle beam bottom arch slip form lining trolley, efficient and stable tunnel lining construction is achieved through brand-new structural design, and the construction quality and efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction machinery, in particular to a full-circular needle beam bottom arch sliding formwork lining trolley. Background Art

[0002] In the secondary lining phase of tunnel construction, tunnel lining trolleys are crucial equipment. Based on their structural form, they can be classified into simple lining trolleys, fully hydraulic automatic lining trolleys, and grid-type lining trolleys. Simple lining trolleys are usually composed of a steel arch frame and a combined steel formwork. They rely on external power for dragging, and manual formwork removal is used. This type of lining trolley is suitable for short tunnels or tunnels with complex cross-sections. Fully hydraulic automatic lining trolleys use integral steel formwork, utilize hydraulic cylinders for formwork removal, and are driven electrically or hydraulically. They are mainly used in medium- and long-length tunnels, especially in projects with high requirements for construction progress and concrete surface quality. The grid-type lining trolley has a special structure that is not affected by lateral pressure during gantry construction and can adapt to tunnels with large transverse and longitudinal slopes.

[0003] As a type of tunnel lining trolley, the steel formwork trolley utilizes a hydraulic drive system and modular design for efficient operation. Its operating mechanism is to move the trolley along a track installed within the tunnel, enabling it to complete construction tasks on different sections. However, current steel formwork trolleys have exposed several drawbacks in actual use. For example, the trolley's movement relies on a track installed within the tunnel. Installation of the track requires drilling holes and screwing them into the pipe segments. This process creates multiple holes in the segments, which in turn affects their quality. Drilling holes can compromise the structural integrity of the segments, causing stress concentrations when subjected to external pressure, leading to cracking and other problems. Furthermore, improperly treated drilled holes can compromise the waterproofing properties of the segments, allowing groundwater to easily penetrate the tunnel, damaging the waterproofing system, shortening the tunnel's service life, and posing safety risks during subsequent construction and operation. Furthermore, repairing the segments after drilling not only requires additional material and labor costs, but the repair process itself can also cause secondary damage, making it difficult to fully restore their original performance.

[0004] Therefore, the existing technology needs to be improved. Summary of the Invention

[0005] The purpose of the present invention is to provide a full-circular needle beam bottom arch sliding formwork lining trolley, which aims to solve the problem of existing steel formwork trolleys affecting the quality of pipe segments due to the need to drill holes in the pipe segments for track installation. Through a new structural design, efficient and stable tunnel lining construction can be achieved, thereby improving construction quality and efficiency.

[0006] The present invention is achieved through the following technical solutions: The present invention provides a full-circle needle beam bottom arch sliding form lining trolley, which is characterized by comprising a trolley body, an outer formwork is provided on the outside of the trolley body, a truss needle beam is provided on the inside of the trolley body, a connecting door frame is provided between the truss needle beam and the trolley body, the connecting door frame slides along the truss needle beam, and a telescopic beam seat is provided on the bottom of the truss needle beam. First, the template is installed on a certain section of the warehouse and the positioning is checked. After the warehouse positioning is accepted, concrete is poured. Then the telescopic beam seat is shortened, and the truss needle beam is moved forward relative to the trolley body. After moving into position, the telescopic beam seat is extended as support. Then the trolley body moves forward compared to the truss needle beam, and the template is installed after moving to the next warehouse.

[0007] Furthermore, in the present invention, the above-mentioned connecting door frame is provided with upper running wheels and lower running wheels, the truss-type needle beam is provided with upper rails and lower rails, the upper running wheels move along the upper rails, and the lower running wheels move along the lower rails.

[0008] Furthermore, in the present invention, the telescopic beam seat includes a needle beam connecting frame, a plurality of telescopic parts are provided at the bottom of the needle beam connecting frame, the plurality of telescopic parts are connected to a support beam, and a support seat in contact with the ground is provided at the bottom of the support beam.

[0009] Furthermore, in the present invention, the telescopic member is configured as a telescopic cylinder.

[0010] Furthermore, in the present invention, the bottom of the telescopic member base is connected to the support beam, the side wall of the telescopic member base is connected to a horizontal bracket, and both ends of the horizontal bracket are respectively connected to the two telescopic member bases.

[0011] Furthermore, in the present invention, the needle beam connecting frame is provided with a sliding sleeve, the sliding sleeve is provided with a sliding groove parallel to the telescopic direction of the telescopic member, and the support crossbeam is provided with a slider inserted into the sliding groove.

[0012] Furthermore, in the present invention, the above-mentioned outer mold plate includes a bottom mold, a side mold and a top mold.

[0013] Furthermore, in the present invention, a bottom arch frame is provided at the bottom of the above-mentioned trolley body, a sliding trolley is provided on the bottom of the trolley body, a bottom arch sliding form is provided at the bottom of the sliding trolley, and the trolley body is provided with a sliding traction mechanism connected to the sliding trolley and slides on the sliding traction mechanism.

[0014] Furthermore, in the present invention, the above-mentioned sliding form traction mechanism is configured as an electric hoist.

[0015] Furthermore, in the present invention, the truss-type needle beam is configured as an upper and lower truss, and the truss includes a plurality of H-shaped steels and I-shaped steels connected to each other.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. Avoiding damage to pipe segments caused by drilling: The full-circular needle beam bottom arch sliding formwork lining trolley of the present invention realizes movement and support through the cooperation of the truss-type needle beam and the telescopic beam seat. There is no need to drill holes in the pipe segments to install rails, which fundamentally avoids damage to the quality of the pipe segments, ensures the structural integrity and waterproof performance of the pipe segments, extends the service life of the tunnel, and reduces subsequent maintenance costs.

[0017] 2. Improve construction efficiency: By connecting the portal frame to achieve relative sliding between the trolley body and the truss-type needle beam, and the sliding formwork traction mechanism drives the sliding of the bottom arch sliding formwork, the movement of the trolley between different positions and the installation of formwork are made more convenient and efficient, reducing construction time and improving the overall construction progress.

[0018] 3. Stable and reliable structure: The truss-type needle beam adopts a truss structure composed of two layers of H-shaped steel and I-shaped steel, as well as the optimized design of the telescopic beam seat, connecting door frame and other components, so that the trolley can stably withstand various loads during the construction process, ensuring the safety and stability of the construction and improving the quality of the lining construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the examples. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can also derive other relevant drawings based on these drawings without inventive effort. In the drawings: Figure 1 This is a front view of a full-circular needle beam bottom arch sliding form lining trolley according to an embodiment of the present invention; Figure 2 A side view of a full-circular needle beam bottom arch sliding form lining trolley according to an embodiment of the present invention; Figure 3 for Figure 1 A magnified schematic diagram of point A in the middle; Figure 4 Schematic diagram of a connecting door frame according to an embodiment of the present invention; Figure 5 Schematic diagram of a telescopic beam seat according to an embodiment of the present invention; Figure 6 Schematic diagram of a truss-type needle beam according to an embodiment of the present invention.

[0020] The marks and corresponding parts names in the accompanying drawings are: 1-trolley body, 2-truss needle beam, 201-upper rail, 3-connecting door frame, 301-upper walking wheel, 302-lower walking wheel, 4-outer template, 401-bottom template, 402-side template, 403-top template, 5-telescopic beam seat, 501-needle beam connecting frame, 502-telescopic part, 503-support crossbeam, 504-support seat, 505-horizontal drag frame, 506-sliding sleeve, 6-bottom arch frame, 7-sliding form trolley, 8-bottom arch sliding form, 9-sliding form traction mechanism. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples and drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0022] The following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort shall fall within the scope of protection of the present invention.

[0023] It should be noted that similar numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0024] Example Combine Figures 1 to 6 As shown, a full-circular needle beam bottom arch sliding form lining trolley according to an embodiment of the present invention is shown, and the specific structure is described as follows.

[0025] Combine Figure 1 and Figure 2 As shown, the full-circular needle beam bottom arch sliding formwork lining trolley of the present invention is mainly composed of a trolley body 1, an outer template 4, a truss-type needle beam 2, a connecting door frame 3 and a telescopic beam seat 5.

[0026] Reference Figure 1 and Figure 2As shown, the trolley body 1 serves as the bearing structure of the entire full-circular needle beam bottom arch slipform lining trolley, providing an installation foundation for other components. Control facilities, power facilities, and an operating table are installed on it. The bottom of the trolley body 1 is provided with a bottom arch frame 6 for installing slipform related components.

[0027] Further, such as Figure 1 As shown, the outer template 4 is composed of a bottom template 401, a side template 402 and a top template 403. Each template is connected to the trolley body 1 through bolts and connectors to facilitate installation and disassembly.

[0028] In this embodiment, combined with Figure 1 、 Figure 3 and Figure 4 As shown, the top of the connecting gantry 3 is provided with an upper running wheel 301, and the bottom of the connecting gantry 3 is provided with a lower running wheel 302. The upper running wheel 301 cooperates with the upper rail 201 of the truss needle beam 2, and the lower running wheel 302 cooperates with the lower rail. The connecting gantry 3 slides on the upper rail 201 and the lower rail of the truss needle beam 2 respectively by the upper running wheel 301 and the lower running wheel 302, thereby achieving relative movement between the trolley body 1 and the truss needle beam 2. The connecting gantry 3 is welded from H-beam and I-beam steel, and has sufficient strength and rigidity to ensure stability during movement.

[0029] Combine Figure 2 and Figure 6 As shown, the truss-type needle beam 2 utilizes a two-layer truss structure, constructed from multiple H-shaped steel and I-shaped steel sections connected by welding or high-strength bolts. This structure provides the truss-type needle beam 2 with exceptional strength and stability, capable of withstanding the various loads applied during trolley movement and construction. The upper truss primarily bears the vertical loads from the trolley body 1 and the outer formwork 4, while the lower truss, in conjunction with the connecting portal 3 and telescopic beam seat 5, enables the movement and support of the full-circular needle beam bottom arch sliding formwork lining trolley.

[0030] like Figure 1 An upper rail 201 is provided on the upper surface of the truss-type needle beam 2, and a lower rail is provided on the lower surface for cooperating with the walking wheels connected to the door frame 3.

[0031] In this embodiment, combined with Figure 1 and Figure 5As shown, the telescopic beam base 5 primarily consists of a needle beam connecting frame 501, multiple telescopic members 502 (two installed in this embodiment), a support beam 503, a support base 504, a horizontal bracket 505, and a sliding sleeve 506. The needle beam connecting frame 501 is bolted or welded to the bottom of the truss-type needle beam 2, and the bottoms of its ends are used to mount the telescopic members 502. The telescopic members 502 utilize telescopic cylinders, whose piston rods are connected to the needle beam connecting frame 501 and whose bases are connected to the support beam 503. Controlling the extension and retraction of the telescopic cylinders enables the raising and lowering of the support beam 503.

[0032] Further, combined Figure 5 As shown, the support beam 503 is made of a rectangular steel beam with a support base 504 welded to its bottom. The increased bottom area of ​​the support base 504 ensures support stability. A horizontal bracket 505 connects between the side walls of the base of the telescopic member 502, enhancing the connection stability between the telescopic members 502. A sliding sleeve 506 on the needle beam connecting frame 501 cooperates with a slider on the support beam 503 to guide and limit the movement of the support beam 503.

[0033] In this embodiment, combined with Figure 1 As shown, two symmetrical bottom arch frames 6 are installed at the bottom of the trolley body 1, a sliding trolley 7 is provided on the bottom arch frame 6, a bottom arch sliding form 8 is installed at the bottom of the sliding trolley 7, and a sliding form traction mechanism 9 is provided on the trolley body 1. The sliding form traction mechanism 9 adopts an electric hoist, and the sliding form traction mechanism 9 is connected to the sliding form trolley 7 to control the movement of the bottom arch sliding form 8.

[0034] During the bottom concrete lining construction, the sliding form traction mechanism 9 is activated, and the wire rope of the electric hoist pulls the sliding form trolley 7, causing the bottom arch sliding form 8 to slide along the bottom form 401. During the sliding process, the bottom arch sliding form 8 squeezes and shapes the bottom concrete, improving the construction efficiency and quality of the bottom concrete lining. By controlling the operating speed and stroke of the sliding form traction mechanism 9, the sliding process of the bottom arch sliding form 8 can be precisely controlled to meet the requirements of different construction conditions.

[0035] The working principle of the full-circular needle beam bottom arch sliding form lining trolley of this embodiment is as follows: Preparation of the initial position: Select the initial construction position in the tunnel and move the full-circle needle beam bottom arch slipform lining trolley to this position. First, check whether the connections of the various parts of the trolley are firm and whether the various mechanisms can work normally. Then, by operating the telescopic beam seat 5, the support seat 504 is lowered and supported on the ground. At this time, the telescopic beam seat 5 is in an extended state, providing stable support for the trolley. Next, install the outer formwork 4 and adjust the position and verticality of the formwork to meet the construction requirements. Afterwards, perform a positioning check on the formwork, and use measuring instruments to detect parameters such as the formwork position to ensure that the formwork is installed accurately.

[0036] Concrete pouring: After the formwork positioning has passed inspection, concrete pouring can begin. Use a concrete pump to deliver concrete to the pouring area on the trolley and pour in layers from bottom to top. Pour the concrete in bottom form 401 first, using a vibrator to ensure compaction. When pouring the concrete in side form 402 and top form 403, similarly pay attention to the quality of the vibration to avoid defects such as voids and honeycombing. During the concrete pouring process, monitor the formwork deformation in real time, and take prompt action to adjust any anomalies.

[0037] The trolley moves to the next position: After the concrete to be poured reaches a certain strength, the trolley is moved. First, operate the telescopic beam seat 5, causing the telescopic member 502 to retract and the support seat 504 to rise. At this point, the telescopic beam seat 5 is in a shortened state, and the truss needle beam 2 loses ground support. Then, using external traction equipment or the trolley's own drive device, the truss needle beam 2 is moved forward relative to the trolley body 1. During this movement, the running wheels connected to the door frame 3 roll along the track of the truss needle beam 2 to ensure smooth movement. When the truss needle beam 2 has moved to the predetermined position, the telescopic beam seat 5 is operated again, causing the telescopic member 502 to extend and the support seat 504 to descend and support the ground, providing stable support for the movement of the trolley body 1. Next, operate the drive device of the trolley body 1 to move the trolley body 1 forward relative to the truss needle beam 2 and move to the next position. During the movement, pay attention to the operation of the trolley to ensure that all components are functioning properly.

[0038] Next position construction: After the trolley body 1 moves to the next position, the above steps of initial position preparation and concrete pouring are repeated to carry out the lining construction of the next position. This cycle is repeated until the lining construction task of the entire tunnel is completed.

[0039] To sum up, the present invention provides a full-circular needle beam bottom arch slipform lining trolley, which includes a trolley body 1, an outer formwork 4 is provided on the outside of the trolley body 1, a truss needle beam 2 is provided on the inside of the trolley body 1, and a connecting door frame 3 is provided between the truss needle beam 2 and the trolley body 1. The connecting door frame 3 slides along the truss needle beam 2, and a telescopic beam seat 5 is provided at the bottom of the truss needle beam 2. First, the template is installed and the positioning is checked for a certain section of the warehouse. After the warehouse positioning is accepted, concrete is poured. Then the telescopic beam seat 5 is shortened to allow the truss needle beam 2 to move forward relative to the trolley body 1. After moving into position, the telescopic beam seat 5 is extended as support. Then the trolley body 1 moves forward compared to the truss needle beam 2, and the template is installed after moving to the next warehouse. The connecting door frame 3 is provided with an upper running wheel 301 and a lower running wheel 302, and the truss-type needle beam 2 is provided with an upper rail 201 and a lower rail. The upper running wheel 301 moves along the upper rail 201, and the lower running wheel moves along the lower rail. The telescopic beam seat 5 includes a needle beam connecting frame 501, and a plurality of telescopic parts 502 are provided at the bottom of the needle beam connecting frame 501. The plurality of telescopic parts 502 are connected to a support beam 503, and a support seat 504 in contact with the ground is provided at the bottom of the support beam 503. The telescopic part 502 is configured as a telescopic oil cylinder. The bottom of the base of the telescopic part 502 is connected to the support beam 503, and the side wall of the base of the telescopic part 502 is connected to a horizontal drag frame 505. The two ends of the horizontal drag frame 505 are respectively connected to the bases of the two telescopic parts 502. The needle beam connecting frame 501 is provided with a sliding sleeve 506, and the sliding sleeve 506 is provided with a sliding groove parallel to the telescopic direction of the telescopic part 502, and the support crossbeam 503 is provided with a slider inserted into the sliding groove. The outer formwork 4 includes a bottom formwork 401, a side formwork 402 and a top formwork 403. The bottom of the trolley body 1 is provided with a bottom arch frame 6, and the bottom arch frame 6 is provided with a sliding form trolley 7. The bottom of the sliding form trolley 7 is provided with a bottom arch sliding form 8. The trolley body 1 is provided with a sliding form traction mechanism 9 connected to the sliding form trolley 7. The bottom arch sliding form 8 slides along the bottom formwork 401 under the action of the sliding form traction mechanism 9). The sliding form traction mechanism 9 is configured as an electric hoist. The truss-type needle beam 2 is configured as an upper and lower two-layer truss, and the truss includes a plurality of H-shaped steels and I-shaped steels connected to each other.

[0040] Therefore, the full-circular needle beam bottom arch sliding form lining trolley of the present invention realizes efficient and stable tunnel lining construction, and improves construction quality and efficiency.

[0041] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A full-circular needle beam bottom arch sliding form lining trolley, characterized in that: The invention comprises a trolley body (1), wherein an outer template (4) is provided on the outside of the trolley body (1), a truss-type needle beam (2) is provided on the inside of the trolley body (1), a connecting door frame (3) is provided between the truss-type needle beam (2) and the trolley body (1), the connecting door frame (3) slides along the truss-type needle beam (2), and a telescopic beam seat (5) is provided on the bottom of the truss-type needle beam (2). First, a template is installed at a certain position and the positioning is checked. After the position positioning is accepted, concrete is poured. Then, the telescopic beam seat (5) is shortened, and the truss-type needle beam (2) is moved forward relative to the trolley body (1). After moving into position, the telescopic beam seat (5) is extended as a support. Then, the trolley body (1) moves forward relative to the truss-type needle beam (2), and the template is installed after moving to the next position.

2. The full-circular needle beam bottom arch sliding form lining trolley according to claim 1 is characterized in that: The connecting door frame (3) is provided with an upper running wheel (301) and a lower running wheel (302), and the truss-type needle beam (2) is provided with an upper rail (201) and a lower rail, the upper running wheel (301) moves along the upper rail (201), and the lower running wheel moves along the lower rail.

3. The full-circular needle beam bottom arch sliding form lining trolley according to claim 1 is characterized in that: The telescopic beam seat (5) comprises a needle beam connecting frame (501), a plurality of telescopic members (502) are provided at the bottom of the needle beam connecting frame (501), the plurality of telescopic members (502) are connected to a support beam (503), and a support seat (504) in contact with the ground is provided at the bottom of the support beam (503).

4. The full-circular needle beam bottom arch sliding form lining trolley according to claim 3 is characterized in that: The telescopic member (502) is configured as a telescopic oil cylinder.

5. The full-circular needle beam bottom arch sliding form lining trolley according to claim 4 is characterized in that: The bottom of the telescopic member (502) base is connected to the support beam (503), the side wall of the telescopic member (502) base is connected to a horizontal bracket (505), and the two ends of the horizontal bracket (505) are respectively connected to the two telescopic member (502) bases.

6. The full-circular needle beam bottom arch sliding form lining trolley according to claim 3 is characterized in that: The needle beam connecting frame (501) is provided with a sliding sleeve (506), the sliding sleeve (506) is provided with a sliding groove parallel to the telescopic direction of the telescopic member (502), and the support crossbeam (503) is provided with a sliding block inserted into the sliding groove.

7. The full-circular needle beam bottom arch sliding form lining trolley according to claim 1 is characterized in that: The outer mold plate (4) comprises a bottom mold (401), side molds (402) and a top mold (403).

8. The full-circular needle beam bottom arch sliding form lining trolley according to claim 7 is characterized in that: The bottom of the trolley body (1) is provided with a bottom arch frame (6), the bottom arch frame (6) is provided with a sliding trolley (7), the bottom of the sliding trolley (7) is provided with a bottom arch sliding form (8), the trolley body (1) is provided with a sliding form traction mechanism (9) connected to the sliding form trolley (6), and the bottom arch sliding form (8) slides along the bottom form (401) under the action of the sliding form traction mechanism (9).

9. The full-circular needle beam bottom arch sliding form lining trolley according to claim 7, characterized in that: The sliding form traction mechanism (9) is configured as an electric hoist.

10. The full-circular needle beam bottom arch sliding form lining trolley according to any one of claims 1 to 9, characterized in that: The truss-type needle beam (2) is configured as an upper and lower truss, and the truss comprises a plurality of H-shaped steels and I-shaped steels connected to each other.

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