Casing running and pressure structure

Abstract

The utility model cylinder's technical field discloses a cylinder sends pressure structure, including sending pressure cylinder, the bottom of sending pressure cylinder has the butt joint structure, and the top of butt joint structure and cylinder butt joint, butt joint structure includes the multiple upper notches of setting in the bottom of sending pressure cylinder, multiple upper notches are concave upwards, multiple upper notches are along the interval arrangement of sending pressure cylinder's circumference, and form upper tab between adjacent upper notches, the top of cylinder is concave downwards and forms multiple lower notches, multiple lower notches are along the interval arrangement of cylinder's circumference, and form lower tab between adjacent lower notches, multiple upper tabs are inserted in multiple lower notches from top to bottom, and multiple lower tabs are inserted in multiple upper notches from bottom to top, and sending pressure cylinder and cylinder butt joint, and the bottom of sending pressure cylinder is connected with the limit structure, and the limit structure is connected with upper tab and lower tab, and the transverse movement of lower tab is limited.

Description

Technical Field

[0001] This utility model patent relates to the technical field of protective sleeves, and more specifically, to a protective sleeve pressure feeding structure. Background Technology

[0002] To meet the demands of economic development and improved transportation, high-speed rail networks in many cities are constantly expanding, leading to an increasing number of underground tunnel projects, many of which involve tunnels passing under existing high-speed rail bridges. To minimize the impact of construction on existing high-speed rail bridges, isolation piles are installed between the bridge piers and the tunnel boring machine (TBM) for protection before tunneling begins.

[0003] The construction isolation piles require the use of permanent casing walls to effectively prevent the collapse of the upper backfill layer from damaging the bridge. In the ultra-low clearance area, a full-rotation integrated machine is used for operation. To facilitate the relocation of the full-rotation integrated machine and subsequent construction, the top casing section needs to be sunk to the ground. However, the rotation mechanism of the full-rotation integrated machine is 1.5m above the ground, making it impossible to completely sink the top casing section to the ground during the sinking process.

[0004] In existing technology, the casing is pressed into place by adding a protective sleeve, and then the excess part is cut off. This process wastes casing material and delays work. Utility Model Content

[0005] The purpose of this utility model is to provide a casing pressurization structure, which aims to solve the problem of low construction efficiency in the existing technology of using a fully rotating integrated machine to completely sink the casing to the ground.

[0006] This utility model is implemented as follows: a protective cylinder pressure feeding structure includes a pressure feeding cylinder, the bottom of which has a docking structure that docks with the top of the protective cylinder; the docking structure includes multiple upper notches provided at the bottom of the pressure feeding cylinder, the multiple upper notches being recessed upwards, the multiple upper notches being arranged at intervals along the circumference of the pressure feeding cylinder, and upper protrusions being formed between adjacent upper notches.

[0007] The top of the protective sleeve is recessed downward to form multiple lower notches, which are arranged at intervals along the circumference of the protective sleeve. A lower protrusion is formed between adjacent lower notches. Multiple upper protrusions are inserted into the multiple lower notches from top to bottom, and multiple lower protrusions are inserted into the multiple upper notches from bottom to top. The pressure feeding cylinder is connected to the protective sleeve vertically.

[0008] The bottom of the pressure feeding cylinder is connected to a limiting structure, which is connected to the upper and lower protrusions and restricts the lower protrusion from moving laterally relative to the upper protrusion.

[0009] Optionally, the pressure feeding cylinder has an annular wall, and the docking structure is formed at the bottom of the wall.

[0010] Optionally, the limiting structure includes a limiting ring, the cylinder wall surrounds and forms a hollow cylinder cavity, the cylinder cavity is provided with a ring-shaped limiting ring, the limiting ring extends along the circumference of the pressure feeding cylinder and is fixedly connected to the inner side of a plurality of upper protrusions; the limiting ring has a suspended section that extends laterally across the upper notch, the suspended section abuts against the inner side wall of the lower protrusion from the inside out.

[0011] Optionally, the outer periphery of the limiting ring is connected to the lower part of the upper protrusion.

[0012] Optionally, the limiting ring is a steel ring.

[0013] Optionally, the upper part of the cylinder wall has multiple lifting holes for easy lifting of the pressure cylinder, and the lifting holes penetrate the cylinder wall laterally.

[0014] Optionally, the cylinder cavity has a pressure feeding cylinder running through it from top to bottom.

[0015] Optionally, the outer periphery of the pressure feeding cylinder is arranged flush with the outer periphery of the protective cylinder.

[0016] Optionally, the thickness of the pressure feeding cylinder is the same as the thickness of the protective cylinder.

[0017] Optionally, the bottom of the upper protrusion abuts against the bottom of the lower notch, and the top of the lower protrusion abuts against the bottom of the upper notch.

[0018] Compared with the prior art, the protective cylinder pressure feeding structure provided by this utility model achieves vertical alignment and docking of the protective cylinder and the pressure feeding cylinder through the mutual cooperation and docking of the upper protrusion and the lower notch, and the lower protrusion and the upper notch. Then, through the design of the limiting structure on the pressure feeding cylinder, the lateral movement of the protective cylinder relative to the pressure feeding cylinder is restricted. In this way, after the pressure feeding cylinder and the protective cylinder are vertically docked, they are relatively fixed under the action of gravity and the action of the limiting structure, achieving a quick and stable connection. After the protective cylinder has sunk, the connection between the pressure feeding cylinder and the protective cylinder can be quickly separated by simply lifting the pressure feeding cylinder. The overall operation is simple and the construction efficiency is high. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of the top of the protective cylinder and the bottom of the pressure feeding cylinder provided by this utility model;

[0020] Figure 2 This is a three-dimensional schematic diagram of the protective sleeve pressure feeding structure provided by this utility model;

[0021] Figure 3 This is a three-dimensional schematic diagram of the pressure feeding cylinder provided by this utility model. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0024] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0025] Reference Figure 1-3 The image shown is a preferred embodiment of the present invention.

[0026] The pressure feeding structure of the protective cylinder 100 provided by this utility model includes a pressure feeding cylinder 200. The bottom of the pressure feeding cylinder 200 has a docking structure, which docks with the top of the protective cylinder 100. The docking structure includes a plurality of upper notches 211 provided at the bottom of the pressure feeding cylinder 200. The plurality of upper notches 211 are recessed upward and are arranged at intervals along the circumference of the pressure feeding cylinder 200. An upper protrusion 210 is formed between adjacent upper notches 211.

[0027] The top of the casing 100 is recessed downward to form multiple lower notches 111. The multiple lower notches 111 are arranged at intervals along the circumference of the casing 100, and a lower protrusion 110 is formed between adjacent lower notches 111. Multiple upper protrusions 210 are inserted into the multiple lower notches 111 from top to bottom, and multiple lower protrusions 110 are inserted into the multiple upper notches 211 from bottom to top. The pressure cylinder 200 is vertically connected to the casing 100.

[0028] The bottom of the pressure cylinder 200 is connected to a limiting structure, which is connected to the upper protrusion 210 and the lower protrusion 110, and restricts the lower protrusion 110 to move laterally relative to the upper protrusion 210.

[0029] The aforementioned pressure-feeding structure for the casing 100 achieves vertical alignment and connection between the casing 100 and the pressure-feeding cylinder 200 through the mutual engagement of the upper protrusion 210 and the lower notch 111, and the lower protrusion 110 and the upper notch 211. Then, the design of the limiting structure on the pressure-feeding cylinder 200 restricts the lateral movement of the casing 100 relative to the pressure-feeding cylinder 200. Thus, after the pressure-feeding cylinder 200 and the casing 100 are vertically aligned, they remain relatively fixed under the influence of gravity and the limiting structure, achieving a rapid and stable connection. After the casing 100 has sunk completely, the connection between the pressure-feeding cylinder 200 and the casing 100 can be quickly disengaged by simply lifting the pressure-feeding cylinder 200. The overall operation is simple and the construction efficiency is high.

[0030] Specifically, the pressure delivery cylinder 200 has an annular cylinder wall, and a docking structure is formed at the bottom of the cylinder wall.

[0031] The limiting structure includes a limiting ring 220. A hollowed-out cylindrical cavity 201 is formed by the surrounding cylindrical wall. The limiting ring 220 is arranged in a ring within the cavity 201. The limiting ring 220 extends circumferentially along the pressure delivery cylinder 200 and is fixedly connected to the inner side of multiple upper protrusions 210. The limiting ring 220 has a suspended section that extends laterally beyond the upper notch 211. This suspended section presses against the inner wall of the lower protrusion 110 from the inside out. Thus, by pressing against the inner wall of the lower protrusion 110 with the suspended section, the lower protrusion 110 cannot move laterally relative to the limiting ring 220, achieving rapid docking and fixing, and serving a positioning function.

[0032] The outer periphery of the limiting ring 220 is connected to the lower part of the upper protrusion 210. This allows the suspended section to abut against the lower part of the lower protrusion 110, making the overall connection more stable.

[0033] Specifically, the limiting ring 220 is a steel ring. In this way, the steel ring is easy to source, has high strength, and low cost.

[0034] The upper part of the cylinder wall has multiple lifting holes 202 for easy lifting of the pressure delivery cylinder 200, and the lifting holes 202 penetrate the cylinder wall laterally. In this way, the pressure delivery cylinder 200 can be lifted stably, and the pressure delivery cylinder 200 can be easily aligned with the protective cylinder 100.

[0035] The pressure delivery cylinder 200 extends through the upper and lower parts of the cylinder cavity 201. This results in less material consumption, lighter weight, and simpler structure.

[0036] The outer periphery of the pressure feeding cylinder 200 is flush with the outer periphery of the protective cylinder 100. This makes it easy to observe whether the pressure feeding cylinder 200 and the protective cylinder 100 are aligned.

[0037] The thickness of the pressure feeding cylinder 200 is the same as the thickness of the protective cylinder 100. This ensures the connection between the suspended section and the lower protrusion 110, and facilitates observation of whether the pressure feeding cylinder 200 and the protective cylinder 100 are aligned.

[0038] The bottom of the upper protrusion 210 presses against the bottom of the lower notch 111, and the top of the lower protrusion 110 abuts against the bottom of the upper notch 211. This mutually cooperating structure makes the overall structure more stable and smooth.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 casing pressurization structure, characterized in that, The device includes a pressure feeding cylinder, the bottom of which has a docking structure that docks with the top of a protective cylinder; the docking structure includes multiple upper notches provided at the bottom of the pressure feeding cylinder, the multiple upper notches being recessed upwards and arranged at intervals along the circumference of the pressure feeding cylinder, and upper protrusions forming between adjacent upper notches. The top of the protective sleeve is recessed downward to form multiple lower notches, which are arranged at intervals along the circumference of the protective sleeve. A lower protrusion is formed between adjacent lower notches. Multiple upper protrusions are inserted into the multiple lower notches from top to bottom, and multiple lower protrusions are inserted into the multiple upper notches from bottom to top. The pressure feeding cylinder is connected to the protective sleeve vertically. The bottom of the pressure feeding cylinder is connected to a limiting structure, which is connected to the upper and lower protrusions and restricts the lower protrusion from moving laterally relative to the upper protrusion.

2. The casing pressure feeding structure as described in claim 1, characterized in that, The pressure feeding cylinder has an annular cylinder wall, and the docking structure is formed at the bottom of the cylinder wall.

3. The casing pressure feeding structure as described in claim 2, characterized in that, The limiting structure includes a limiting ring. The cylinder wall surrounds and forms a hollow cylinder cavity. The cylinder cavity is provided with a ring-shaped limiting ring. The limiting ring extends along the circumference of the pressure feeding cylinder and is fixedly connected to the inner side of multiple upper protrusions. The limiting ring has a suspended section that extends laterally across the upper notch. The suspended section presses against the inner side wall of the lower protrusion from the inside out.

4. The casing pressure feeding structure as described in claim 3, characterized in that, The outer periphery of the limiting ring is connected to the lower part of the upper protrusion.

5. The casing pressure feeding structure as described in claim 3, characterized in that, The limiting ring is a steel ring.

6. The casing pressure feeding structure as described in claim 2, characterized in that, The upper part of the cylinder wall has multiple lifting holes for easy lifting of the pressure cylinder, and the lifting holes penetrate the cylinder wall laterally.

7. The casing pressure feeding structure as described in claim 2, characterized in that, The pressure delivery cylinder runs through the upper and lower parts of the cylinder cavity.

8. The casing pressurization structure as described in any one of claims 1 to 7, characterized in that, The outer periphery of the pressure feeding cylinder is flush with the outer periphery of the protective cylinder.

9. The casing pressure feeding structure as described in claim 8, characterized in that, The thickness of the pressure feeding cylinder is the same as the thickness of the protective cylinder.

10. The casing pressurization structure according to any one of claims 1 to 7, characterized in that, The bottom of the upper protrusion presses against the bottom of the lower notch, and the top of the lower protrusion abuts against the bottom of the upper notch.

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