Prestressed locking mechanism of sectional U-shaped pipe gallery core mold

Abstract

The utility model relates to underground pipe gallery construction technical field, and disclose a kind of prestressed locking mechanism of block type U-shaped pipe gallery core mould, the connecting assembly is composed of fixed cylinder, slider, limit rod, pull rod, spring, the fixed cylinder is fixedly installed in the top of mounting plate, the slider is slidably installed in the inside of fixed cylinder.The prestressed locking mechanism of block type U-shaped pipe gallery core mould is set up steel cable and accurate control tensioning stress in the key stress position of U-shaped module, more effective prestress can be applied to it, which can not only significantly improve the anti-deformation ability of U-shaped module as a whole, when the non-uniform settlement of local gene, load fluctuation produces upward reaction, the compressive stress previously established in the interior of U-shaped module can also be efficiently offset, greatly reduce the possibility of U-shaped module cracking due to tension, thereby avoiding the structural durability decline, leakage and other problems caused by crack, ensure that U-shaped module maintains stable and reliable working condition in long-term use.

Description

Technical Field

[0001] This utility model relates to the field of underground utility tunnel construction technology, specifically a prestressed locking mechanism for a segmented U-shaped utility tunnel core mold. Background Technology

[0002] U-shaped utility tunnel core molds are special molds used for pouring U-shaped structures in the construction of underground integrated utility tunnels. They are mostly made of steel or composite materials, which can accurately control the concrete forming size, facilitate rapid demolding, and can be reused, ensuring that the inner wall of the utility tunnel is smooth and the structure is stable.

[0003] In traditional underground utility tunnel construction, the prestressed locking mechanism used in the U-shaped utility tunnel core mold relies on simple bolt fastening or rigid connectors, resulting in uneven distribution of locking force. This means that during the pouring and hardening of the utility tunnel, the reaction force generated by uneven settlement of the foundation cannot be effectively transmitted and dispersed through the locking mechanism. When the tensile strength of the concrete is insufficient to offset the tensile stress caused by the foundation reaction force, it is very easy to form through cracks in the side walls and bottom slab of the utility tunnel, which cannot meet current requirements. Utility Model Content

[0004] The purpose of this invention is to provide a prestressed locking mechanism for a segmented U-shaped pipe gallery core mold, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a prestressed locking mechanism for a segmented U-shaped pipe gallery core mold, comprising a U-shaped module, a positioning component, a connecting component, a steel cable, and an anchor. The positioning component is disposed on the side of the U-shaped module, the connecting component is disposed on the surface of the positioning component, the steel cable is slidably installed inside the U-shaped module, and the anchor is disposed outside the steel cable.

[0006] The positioning assembly consists of a positioning plate, a connecting plate, an L-shaped rod, and a mounting plate. The positioning plate is fixedly installed on the side of the U-shaped module, the connecting plate is fixedly installed on the side of the U-shaped module, the L-shaped rod is fixedly installed on the side of the U-shaped module, and the mounting plate is fixedly installed on the side of the U-shaped module.

[0007] The connecting assembly consists of a fixed cylinder, a slider, a limiting rod, a pull rod, and a spring. The fixed cylinder is fixedly installed on the top of the mounting plate, the slider is slidably installed inside the fixed cylinder, the limiting rod is fixedly installed on the bottom of the slider, the pull rod is fixedly installed on the top of the slider, and the spring is sleeved on the surface of the pull rod.

[0008] Preferably, the anchor consists of an anchor ring, a clamp, and an elastic ring. The anchor ring is slidably installed on the outside of the steel cable, the clamp is slidably installed inside the anchor ring, and the elastic ring is sleeved on the surface of the clamp.

[0009] Preferably, the positioning plate has a positioning hole inside that matches the L-shaped rod. This feature is used for positioning when the two U-shaped modules are docked.

[0010] Preferably, the connecting plate has a limiting hole inside that matches the limiting rod. By allowing the limiting rod to enter the limiting hole, the two U-shaped modules can be prevented from moving relative to each other.

[0011] Preferably, a handle is fixedly installed on the top of the pull rod, which can be used to move the pull rod upward.

[0012] Preferably, one end of the spring abuts against the fixed cylinder, and the other end of the spring abuts against the slider. When the slider is displaced axially by an external force, the spring will be compressed and elastically deformed as the slider moves, thereby generating a restoring force opposite to the direction of slider displacement. When the external force is removed, the spring returns to its original position, so that the slider is reset.

[0013] Preferably, the steel cables and anchors are arranged in a linear array inside the U-shaped module, with multiple sets of this component. By placing steel cables at the key stress-bearing parts of the U-shaped module and precisely controlling the tensile stress, more effective prestress can be applied. This not only significantly improves the overall deformation resistance of the U-shaped module, but also effectively counteracts the upward reaction force generated by uneven settlement and load fluctuations in the local area. This greatly reduces the possibility of the U-shaped module cracking due to tension, thereby avoiding problems such as reduced structural durability and leakage caused by cracks, and ensuring that the U-shaped module maintains a stable and reliable working state during long-term use.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: the prestressed locking mechanism of the segmented U-shaped pipe gallery core mold can apply more effective prestress by setting steel cables at the key stress-bearing parts of the U-shaped module and precisely controlling the tension stress. This not only significantly improves the overall deformation resistance of the U-shaped module, but also effectively counteracts the upward reaction force generated by uneven settlement and load fluctuations in the local area. This greatly reduces the possibility of cracking of the U-shaped module due to tension, thereby avoiding problems such as reduced structural durability and leakage caused by cracks, and ensuring that the U-shaped module maintains a stable and reliable working state during long-term use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the positioning plate and L-shaped rod structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the steel cable and anchor structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the fixed cylinder, slider, and limiting rod structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the anchor ring, clamping plate, and elastic ring structure of this utility model.

[0020] In the diagram: 1. U-shaped module; 2. Positioning component; 201. Positioning plate; 202. Connecting plate; 203. L-shaped rod; 204. Mounting plate; 3. Connecting component; 301. Fixing cylinder; 302. Slider; 303. Limiting rod; 304. Pull rod; 305. Spring; 4. Steel cable; 5. Anchor; 501. Anchor ring; 502. Clamping piece; 503. Elastic ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a technical solution: a prestressed locking mechanism for a segmented U-shaped pipe gallery core mold, including a U-shaped module 1, a positioning component 2, a connecting component 3, a steel cable 4, and an anchor 5. The positioning component 2 is disposed on the side of the U-shaped module 1, the connecting component 3 is disposed on the surface of the positioning component 2, the steel cable 4 is slidably installed inside the U-shaped module 1, and the anchor 5 is disposed outside the steel cable 4. The steel cable 4 and the anchor 5 are linearly arrayed inside the U-shaped module 1, and multiple sets of this component are provided. By setting the steel cable 4 at the key stress-bearing parts of the U-shaped module 1 and precisely controlling the tension stress, more effective prestress can be applied to it. This not only significantly improves the overall deformation resistance of the U-shaped module 1, but also effectively counteracts the upward reaction force generated by uneven local settlement and load fluctuations, greatly reducing the possibility of cracking of the U-shaped module 1 due to tension, thereby avoiding problems such as reduced structural durability and leakage caused by cracks, and ensuring that the U-shaped module 1 maintains a stable and reliable working state during long-term use.

[0023] The positioning assembly 2 consists of a positioning plate 201, a connecting plate 202, an L-shaped rod 203, and a mounting plate 204. The positioning plate 201 is fixedly installed on the side of the U-shaped module 1, the connecting plate 202 is fixedly installed on the side of the U-shaped module 1, and the L-shaped rod 203 is fixedly installed on the side of the U-shaped module 1. The positioning plate 201 has a positioning hole inside that matches the L-shaped rod 203. This setting is used for positioning when two U-shaped modules 1 are docked. The mounting plate 204 is fixedly installed on the side of the U-shaped module 1.

[0024] The connecting assembly 3 consists of a fixed cylinder 301, a slider 302, a limiting rod 303, a pull rod 304, and a spring 305. The fixed cylinder 301 is fixedly installed on the top of the mounting plate 204. The slider 302 is slidably installed inside the fixed cylinder 301. The limiting rod 303 is fixedly installed on the bottom of the slider 302. The connecting plate 202 has a limiting hole that matches the limiting rod 303. By allowing the limiting rod 303 to enter the limiting hole, the two U-shaped modules 1 can be prevented from moving relative to each other. The pull rod 304 is fixedly installed on the slider 302. At the top, a handle is fixedly installed on the top of the pull rod 304. The pull rod 304 can be moved upward by the handle. The spring 305 is sleeved on the surface of the pull rod 304. One end of the spring 305 abuts against the fixed cylinder 301, and the other end of the spring 305 abuts against the slider 302. When the slider 302 is displaced axially by an external force, the spring 305 will be compressed and elastically deformed as the slider 302 moves, thereby generating a restoring force opposite to the displacement direction of the slider 302. When the external force is removed, the spring 305 returns to its original position, so that the slider 302 resets.

[0025] The anchor 5 consists of an anchor ring 501, a wedge 502, and an elastic ring 503. The anchor ring 501 is slidably installed on the outside of the steel cable 4, the wedge 502 is slidably installed on the inside of the anchor ring 501, and the elastic ring 503 is sleeved on the surface of the wedge 502.

[0026] In use, by moving the handle upwards on the pull rod 304, the slider 302 moves the limiting rod 303 upwards and compresses the spring 305, causing the L-shaped rod 203 to enter the positioning hole, allowing the two U-shaped modules 1 to be joined. Releasing the handle allows the slider 302 to reset under the action of the spring 305, causing the limiting rod 303 to enter the limiting hole, preventing the two U-shaped modules 1 from moving relative to each other. The steel cable 4 is then passed between the two U-shaped modules 1, and the anchor ring 501 is positioned appropriately on the outside of the steel cable 4, allowing the clamping piece 502 to enter the interior of the anchor ring 501, enabling... Two U-shaped modules 1 are connected by steel cables 4. By setting steel cables 4 at the key stress-bearing parts of the U-shaped modules 1 and precisely controlling the tension stress, more effective prestress can be applied to them. This not only significantly improves the overall deformation resistance of the U-shaped modules 1, but also effectively counteracts the upward reaction force generated by uneven settlement and load fluctuations in the local area. This greatly reduces the possibility of cracking of the U-shaped modules 1 due to tension, thereby avoiding problems such as reduced structural durability and leakage caused by cracks, and ensuring that the U-shaped modules 1 maintain a stable and reliable working state during long-term use.

Claims

1. A prestressed locking mechanism for a segmented U-shaped pipe gallery core mold, comprising a U-shaped module (1), a positioning component (2), a connecting component (3), a steel cable (4), and an anchor (5), characterized in that: The positioning component (2) is disposed on the side of the U-shaped module (1), the connecting component (3) is disposed on the surface of the positioning component (2), the steel cable (4) is slidably installed inside the U-shaped module (1), and the anchor (5) is disposed outside the steel cable (4); The positioning component (2) consists of a positioning plate (201), a connecting plate (202), an L-shaped rod (203), and a mounting plate (204). The positioning plate (201) is fixedly installed on the side of the U-shaped module (1), the connecting plate (202) is fixedly installed on the side of the U-shaped module (1), the L-shaped rod (203) is fixedly installed on the side of the U-shaped module (1), and the mounting plate (204) is fixedly installed on the side of the U-shaped module (1). The connecting assembly (3) consists of a fixed cylinder (301), a slider (302), a limiting rod (303), a pull rod (304), and a spring (305). The fixed cylinder (301) is fixedly installed on the top of the mounting plate (204). The slider (302) is slidably installed inside the fixed cylinder (301). The limiting rod (303) is fixedly installed on the bottom of the slider (302). The pull rod (304) is fixedly installed on the top of the slider (302). The spring (305) is sleeved on the surface of the pull rod (304).

2. The prestressed locking mechanism for a segmented U-shaped pipe gallery core mold according to claim 1, characterized in that: The anchor (5) consists of an anchor ring (501), a clamp (502), and an elastic ring (503). The anchor ring (501) is slidably installed on the outside of the steel cable (4), the clamp (502) is slidably installed on the inside of the anchor ring (501), and the elastic ring (503) is sleeved on the surface of the clamp (502).

3. The prestressed locking mechanism for a segmented U-shaped pipe gallery core mold according to claim 1, characterized in that: The positioning plate (201) has positioning holes inside that match the L-shaped rod (203).

4. The prestressed locking mechanism for a segmented U-shaped pipe gallery core mold according to claim 1, characterized in that: The connecting plate (202) has a limiting hole inside that matches the limiting rod (303).

5. The prestressed locking mechanism for a segmented U-shaped pipe gallery core mold according to claim 1, characterized in that: A handle is fixedly installed on the top of the pull rod (304).

6. The prestressed locking mechanism for a segmented U-shaped pipe gallery core mold according to claim 1, characterized in that: One end of the spring (305) abuts against the fixed cylinder (301), and the other end of the spring (305) abuts against the slider (302).

7. The prestressed locking mechanism for a segmented U-shaped pipe gallery core mold according to claim 1, characterized in that: The steel cable (4) and anchor (5) are arranged in a linear array inside the U-shaped module (1).

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