A trolley for tunnel lining support

Abstract

This utility model relates to the field of tunnel lining support technology, and discloses a trolley for tunnel lining support, including multiple support frames. Each support frame has a movable template on its outer wall. Each support frame has an upper support assembly at its upper part, and side support assemblies at both ends. Slide rails are fixedly connected to both ends of the lower part of each support frame. The upper support assembly includes a bidirectional threaded rod, the outer wall of which is rotatably connected to the upper end of the corresponding support frame's inner wall. Slide cylinders are provided at both ends of the bidirectional threaded rod. In this utility model, the modular support frames and movable templates, combined with the synergistic effect of the upper and side support assemblies, achieve multi-angle support for the tunnel lining. The slide rails allow the trolley to move quickly along the tunnel axis.

Description

Technical Field

[0001] This utility model relates to the field of tunnel lining support technology, and in particular to a trolley for tunnel lining support. Background Technology

[0002] Tunnel engineering is a crucial component of transportation infrastructure construction (such as railways, highways, and subways). Its construction quality directly impacts the tunnel's safety, durability, and service life. In tunnel lining construction, the lining structure (usually reinforced concrete) needs to be cast using a formwork support system, and the tunnel lining support trolley is the core equipment for this process. However, trolleys typically employ fixed support structures, often featuring a single rigid top rod or an asymmetrical top support design. This makes it difficult to distribute the dynamic pressure during concrete pouring, easily leading to deformation or displacement of the formwork top due to excessive localized stress, resulting in problems such as lining top curvature deviation and insufficient surface flatness.

[0003] Therefore, those skilled in the art have provided a trolley for tunnel lining support to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a trolley for tunnel lining support. When the upper end of the movable template is stable, rotating the bidirectional threaded rod with a tool causes a brief displacement of the threaded cylinders at both ends, which in turn causes the top block to firmly abut against the upper part of the inner wall of the movable template. This evenly distributes the pressure during concrete pouring, preventing the movable template from deforming due to uneven stress and ensuring the curvature of the lining top. After stabilizing both ends of the movable template, rotating the threaded rod again causes a brief displacement of the threaded cylinders threaded to the outer wall, which then abuts against both ends of the inner wall of the movable template via the support hinge rod. This not only adapts to changes in different tunnel cross-sectional dimensions but also reduces impact through progressive loading, thus enabling rapid positioning of the movable template.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A trolley for supporting tunnel lining includes multiple support frames, each of which has a movable template on its outer wall, an upper support assembly on its upper part, side support assemblies at both ends of each support frame, and slide rails fixedly connected to both ends of the lower part of each support frame.

[0007] Through the above technical solution, the modular support frame and movable template work together with the support components and side support components to achieve multi-angle support for the tunnel lining. The slide rail allows the trolley to move quickly along the tunnel axis.

[0008] Furthermore, the upper support assembly includes a bidirectional threaded rod, the outer wall of which is rotatably connected to the upper end of the inner wall of the corresponding support frame, and both ends of the bidirectional threaded rod are provided with sliding cylinders;

[0009] Through the above technical solution, the symmetrical thread design of the bidirectional threaded rod enables the two end slides to move synchronously in opposite directions during rotation, and achieves uniform distribution of top support force through mechanical transmission.

[0010] Furthermore, both ends of the upper part of the inner wall of the support frame are slidably connected to top blocks, and the upper end of the slide cylinder is hingedly connected to a support hinge rod. The end of the support hinge rod away from the slide cylinder is hingedly connected to one end of the top block, and the upper end of the top block is in contact with the upper end of the inner wall of the movable template.

[0011] The above technical solution converts the horizontal displacement of the slide cylinder into the vertical lifting force of the top block by changing the angle of the hinge rod. A large amount of template adjustment is achieved with a small threaded transmission stroke, which saves operating space and allows for fine-tuning control of the template position to adapt to the curvature requirements of different tunnel sections.

[0012] Furthermore, the side support assembly includes a threaded rod, the upper end of the outer wall of the threaded rod is rotatably connected to the inner wall of the corresponding support frame, and the lower part of the outer walls at both ends of the support frame is fixedly connected to a support plate;

[0013] Through the above technical solution, the threaded rod and the support plate form a stable vertical support structure. The side support force can be controlled through threaded transmission. Compared with welded or bolted fixed supports, the support position and force can be adjusted quickly.

[0014] Furthermore, the lower end of each threaded rod is rotatably connected to the upper end of the corresponding support plate, and the body of each threaded rod is threadedly connected with a threaded cylinder;

[0015] Through the above technical solution, the linear motion of the threaded cylinder along the threaded rod is converted into lateral thrust of the template through the hinge rod 2.

[0016] Furthermore, the end of the threaded cylinder away from the support frame is hinged to a second support hinge rod, and the lower part of both ends of the inner wall of the movable template is fixedly connected to a connector, and the end of the second support hinge rod away from the threaded cylinder is hinged to the connector.

[0017] Through the above technical solution, the hinge rod is converted into lateral thrust of the template, avoiding template deformation caused by sudden force on the rigid support. At the same time, the hinge structure allows the template to adaptively adjust its angle within a certain range, better fitting the irregular tunnel rock wall.

[0018] Furthermore, support columns are fixedly connected to the middle of the outer walls at both ends of the support frame, and the ends of the support columns away from the support frame are threadedly connected to the inner wall of the movable template by bolts.

[0019] Through the above technical solution, the support column is connected to the inner wall of the template by bolts to form a rigid support point, which effectively resists the lateral impact force and torque generated during concrete pouring and prevents the template from shaking or misaligning.

[0020] This utility model has the following beneficial effects:

[0021] This utility model proposes a trolley for supporting tunnel lining. When the upper end of the movable template is stable, rotating the bidirectional threaded rod with a tool causes a brief displacement of the threaded cylinders at both ends, which in turn causes the top block to firmly abut against the upper part of the inner wall of the movable template. This evenly distributes the pressure during concrete pouring, preventing the movable template from deforming due to uneven stress and ensuring the curvature of the lining top. After stabilizing both ends of the movable template, rotating the threaded rod again causes a brief displacement of the threaded cylinders threaded to the outer wall. This displacement, along with the support hinge rods, abuts against both ends of the inner wall of the movable template. This design not only adapts to changes in different tunnel cross-sectional dimensions but also reduces impact through progressive loading, thus enabling rapid positioning of the movable template. Attached Figure Description

[0022] Figure 1 An axonometric drawing of a trolley for tunnel lining support proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of a trolley for tunnel lining support proposed in this utility model;

[0024] Figure 3 This is a partial structural schematic diagram of a trolley for tunnel lining support proposed in this utility model.

[0025] Figure 4 This is a partial exploded view of a trolley for tunnel lining support proposed in this utility model.

[0026] Figure 5 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 6 for Figure 1 Enlarged view of point B in the middle.

[0028] Legend:

[0029] 1. Support frame; 2. Movable template;

[0030] 3. Upper support assembly; 301. Two-way threaded rod; 302. Slide cylinder; 303. Support hinge rod one; 304. Top block;

[0031] 4. Slide rail;

[0032] 5. Side support assembly; 501. Threaded rod; 502. Support hinge rod II; 503. Connector; 504. Threaded cylinder; 505. Support plate;

[0033] 6. Support columns. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Reference Figure 1-6 One specific embodiment provided by this utility model:

[0036] A trolley for tunnel lining support includes multiple support frames 1, each with a movable template 2 on its outer wall, an upper support assembly 3 on its upper part, side support assemblies 5 on both ends of each support frame 1, and slide rails 4 fixedly connected to both ends of the lower part of each support frame 1.

[0037] The modular support frame 1, together with the movable template 2 and the support components 3 and side support components 5, provides multi-angle support for the tunnel lining. The slide rail 4 allows the trolley to move quickly along the tunnel axis.

[0038] The upper support assembly 3 includes a bidirectional threaded rod 301. The outer wall of the bidirectional threaded rod 301 is rotatably connected to the upper end of the inner wall of the corresponding support frame 1. Both ends of the bidirectional threaded rod 301 are provided with a sliding cylinder 302. The symmetrical thread design of the bidirectional threaded rod 301 allows the two sliding cylinders 302 to move synchronously in opposite directions during rotation. The uniform distribution of the top support force is achieved through mechanical transmission. Both ends of the upper part of the inner wall of the support frame 1 are slidably connected to a top block 304. The upper end of the sliding cylinder 302 is hinged to a support hinge rod 303. The end of the support hinge rod 303 away from the sliding cylinder 302 is hinged to one end of the top block 304. The upper end of the top block 304 is in contact with the upper end of the inner wall of the movable template 2. The horizontal displacement of the sliding cylinder 302 is converted into the vertical lifting force of the top block 304 by the angle change of the support hinge rod 303. A large template adjustment is achieved with a small threaded transmission stroke, which saves operating space and allows for fine-tuning control of the template position to adapt to the curvature requirements of different tunnel sections.

[0039] The side support assembly 5 includes a threaded rod 501. The upper end of the outer wall of the threaded rod 501 is rotatably connected to the inner wall of the corresponding support frame 1. The lower part of the outer wall at both ends of the support frame 1 is fixedly connected to a support plate 505. The threaded rod 501 and the support plate 505 form a stable vertical support structure. The side support force is controlled by threaded transmission. Compared with welded or bolted support, the support position and force can be quickly adjusted. The lower end of the threaded rod 501 is rotatably connected to the upper end of the corresponding support plate 505. The rod body of the threaded rod 501 is threadedly connected to a threaded cylinder 504. The linear movement of the threaded cylinder 504 along the threaded rod 501 is converted into a lateral thrust of the template through the support hinge rod 502.

[0040] The threaded cylinder 504 is hinged to a second support hinge rod 502 at the end furthest from the support frame 1. Connectors 503 are fixedly connected to the lower parts of both ends of the inner wall of the movable template 2. The end of the second support hinge rod 502 furthest from the threaded cylinder 504 is hinged to the connector 503. The second support hinge rod 502 converts the force into lateral thrust on the template, preventing deformation of the template due to sudden stress on the rigid support. Simultaneously, the hinged structure allows the template to adaptively adjust its angle within a certain range, better conforming to the irregular tunnel rock wall. Support columns 6 are fixedly connected to the middle of the outer walls at both ends of the support frame 1. The end of the support column 6 furthest from the support frame 1 is threadedly connected to the inner wall of the movable template 2 via bolts. The support column 6 is connected to the inner wall of the template via bolts, forming a rigid support point that effectively resists the lateral impact and torque generated during concrete pouring, preventing template swaying or misalignment.

[0041] Working Principle: When the trolley used for tunnel lining support is in operation, it is first moved to the designated lining position via the slide rail 4 to initially adjust the position of the movable template 2. Then, using a tool, the bidirectional threaded rod 301 is rotated, and the reverse threads at both ends drive the slide cylinder 302 to move inward synchronously. The horizontal displacement of the slide cylinder 302 is converted into the vertical lifting force of the top block 304 through the support hinge rod 303, so that the top block 304 fits tightly against the top of the inner wall of the movable template 2, achieving symmetrical support at the top, evenly distributing the concrete pouring pressure, and ensuring the curvature of the lining top. After the top is fixed, rotating the threaded rod 501 drives the threaded cylinder... 504 rises along the rod, and the threaded cylinder 504 then pushes the connector 503 through the support hinge rod 2 502, causing the movable template 2 to expand outwards on both sides and fit against the tunnel rock wall. The independently adjustable side support structure can not only adapt to different tunnel cross-sectional dimensions, but also reduce impact force through progressive loading. Finally, the support column 6 is connected to the inner wall of the movable template 2 by bolts to form a three-point support, which enhances the overall stability and resists the lateral pressure and torque during concrete pouring. After the concrete solidifies, the threaded rod 501 is operated in reverse to release the support, and the trolley can move to the next construction section through the slide rail 4 to achieve continuous and efficient operation.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. The specific meaning of the above terms in this utility model shall be understood by those skilled in the art based on the specific circumstances. In addition, unless otherwise stated, "multiple" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as a limitation on this utility model; the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A trolley for tunnel lining support, comprising multiple support frames (1), characterized in that: Each of the multiple support frames (1) has a movable template (2) on its outer wall, an upper support assembly (3) on its upper part, a side support assembly (5) on both ends of the support frame (1), and a slide rail (4) fixedly connected to both ends of the lower part of the support frame (1). The upper support assembly (3) includes a bidirectional threaded rod (301), the outer wall of which is rotatably connected to the upper end of the inner wall of the corresponding support frame (1), and both ends of the bidirectional threaded rod (301) are provided with slide cylinders (302). The upper ends of the inner wall of the support frame (1) are slidably connected to top blocks (304), and the upper ends of the slide cylinder (302) are hinged to support hinge rods (303). The end of the support hinge rods (303) away from the slide cylinder (302) is hinged to one end of the top block (304), and the upper end of the top block (304) is in contact with the upper end of the inner wall of the movable template (2). The side support assembly (5) includes a threaded rod (501), the upper end of the outer wall of the threaded rod (501) is rotatably connected to the inner wall of the corresponding support frame (1), and the lower part of the outer wall at both ends of the support frame (1) is fixedly connected to a support plate (505).

2. The trolley for tunnel lining support according to claim 1, characterized in that: The lower end of each threaded rod (501) is rotatably connected to the upper end of the corresponding support plate (505), and each threaded rod (501) is threadedly connected to a threaded cylinder (504).

3. A trolley for tunnel lining support according to claim 2, characterized in that: The threaded cylinder (504) is hinged to a second support hinge rod (502) at the end away from the support frame (1). The lower part of both ends of the inner wall of the movable template (2) is fixedly connected to a connector (503). The end of the second support hinge rod (502) away from the threaded cylinder (504) is hinged to the connector (503).

4. A trolley for tunnel lining support according to claim 1, characterized in that: The support frame (1) has a support column (6) fixedly connected to the middle of the outer wall at both ends. The end of the support column (6) away from the support frame (1) is threadedly connected to the inner wall of the movable template (2) by bolts.

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