A mounting structure of a grouting and grease injection pipeline

Abstract

This utility model relates to the field of tunnel boring machine technology and discloses an installation structure for grouting and grease injection pipelines. It includes a tail shield shell and a grouting pipeline assembly. The inner side of the tail shield shell has multiple mounting grooves arranged around its axis. The grouting pipeline assembly includes a main body, a grouting pipe, and a grease injection pipe. The main body mates with the mounting grooves and can be detachably installed on the grooves via connectors. The main body contains a grouting channel and a grease injection channel. The input ends of the grouting channel and the grease injection channel respectively penetrate the inner front end of the main body, and the output end of the grouting channel penetrates the rear end of the main body. The output end of the grease injection pipe penetrates the inner rear end of the main body. The grouting pipe and the grease injection pipe are respectively located on the inner front end of the main body. The output end of the grouting pipe is connected to the input end of the grouting channel, and the output end of the grease injection pipe is connected to the input end of the grease injection channel. This utility model's grouting pipeline assembly is removable and replaceable, resulting in high maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machine technology, and in particular to an installation structure for grease injection and grouting pipelines. Background Technology

[0002] The main body of a tunnel boring machine (TBM) consists of the front shield, middle shield, and tail shield. The tail shield, as the rear shell of the TBM, primarily serves functions such as support, grouting, grease injection, water sealing, and slag sealing. Currently, the grouting and grease injection pipes of the tail shield are connected to the tail shield shell by welding. After completing the tunneling of a section, the TBM needs to be returned to the factory for overall maintenance. However, if the grouting and grease injection pipes of the tail shield are not cleared promptly after use, the cement slurry and grease will harden inside the pipes after a period of time, making subsequent maintenance and cleaning extremely difficult. Previously, maintenance often involved manual clearing with steel chisels, which was not only ineffective and inefficient, but some pipes even required the removal of the cover plates for cleaning, making the operation very inconvenient. Moreover, the pipes treated in this way performed poorly when reused and were prone to re-blockage. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a grease and grout injection pipeline installation structure that can be disassembled and replaced to improve maintenance efficiency.

[0004] To achieve the above objectives, this utility model provides an installation structure for grouting and grease injection pipelines, including a tail shield shell and a grouting pipeline assembly. The inner side of the tail shield shell is provided with multiple mounting grooves arranged around the axis of the tail shield shell. The grouting pipeline assembly includes a main body, a grouting pipe, and a grease injection pipe. The main body mates with the mounting grooves and is detachably mounted on the mounting grooves via connectors. The main body contains a grouting channel and a grease injection channel. The input ends of the grouting channel and the grease injection channel respectively penetrate the inner front end of the main body. The output end of the grouting channel penetrates the rear end of the main body, and the output end of the grease injection pipe penetrates the inner rear end of the main body. The grouting pipe and the grease injection pipe are respectively located on the inner front end of the main body. The output end of the grouting pipe is connected to the input end of the grouting channel, and the output end of the grease injection pipe is connected to the input end of the grease injection channel.

[0005] As a preferred embodiment of this utility model, mounting shoulders are provided on both sides of the main body, and multiple positioning holes are provided on the mounting shoulders at intervals along the length direction of the main body. Mounting bosses are provided on both sides of the mounting groove, and the mounting shoulders are provided on the mounting bosses. The mounting bosses are provided with mounting holes that correspond one-to-one with the positioning holes. The connecting member includes multiple mounting bolts that correspond one-to-one with the positioning holes. The mounting bolts pass through the positioning holes and are threadedly connected to the mounting holes.

[0006] As a preferred embodiment of this utility model, the inner side of the mounting shoulder is provided with countersunk holes that correspond one-to-one with the positioning holes, and the bolt head of the mounting bolt is located in the countersunk hole.

[0007] As a preferred embodiment of this utility model, the inner side of the main body is provided with an observation window communicating with the grouting channel, and the observation window is covered with a sealing plate.

[0008] As a preferred embodiment of this utility model, two grouting channels and two grouting pipes are provided respectively, and the grouting channels and grouting pipes are connected in a one-to-one correspondence, with the output ends of the two grouting pipes arranged in a figure-eight shape.

[0009] As a preferred embodiment of this utility model, the grouting channel and the grease injection channel are arranged in parallel.

[0010] As a preferred embodiment of this utility model, a hanging plate is fixedly connected to the front end of the main body, and the hanging plate is provided with a hanging hole.

[0011] This utility model provides an installation structure for grouting and grease injection pipelines. Compared with the prior art, its advantages are as follows: During operation, cement slurry is transported to the grouting channel through the grouting pipe to achieve grouting, and grease is transported to the grease injection channel through the grease injection pipe to achieve grease injection. When the grouting or grease injection channel is blocked, the main body is removed from the installation groove to disassemble the injection pipeline assembly. A new injection pipeline assembly can then be replaced, which can quickly solve the problem of pipeline blockage and make subsequent unblocking operations more convenient, effectively improving maintenance efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 yes Figure 1 A magnified view of a portion at point A;

[0014] Figure 3 yes Figure 1 AA section view;

[0015] Figure 4 yes Figure 3 J-direction view;

[0016] In the figure, the tail shield shell is 1; the mounting groove is 11; the mounting boss is 12; the mounting hole is 121; the grouting pipeline assembly is 2; the main body is 21; the grouting pipe is 22; the grease pipe is 23; the grouting channel is 24; the grease channel is 25; the mounting shoulder is 26; the positioning hole is 261; the countersunk hole is 262; the observation window is 27; the sealing plate is 271; the lifting plate is 28; the lifting hole is 281; the connector is 3; and the mounting bolt is 31. Detailed Implementation

[0017] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are used only for the convenience of describing this utility model and simplifying the description, and 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 therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] like Figure 1-4 As shown, a preferred embodiment of the present invention provides an installation structure for grouting and grease injection pipes 23, including a tail shield housing 1 and an injection pipeline assembly 2. The inner side of the tail shield housing 1 is provided with multiple mounting grooves 11 arranged around the axis of the tail shield housing 1. The injection pipeline assembly 2 includes a main body 21, a grouting pipe 22, and a grease injection pipe 23. The main body 21 mates with the mounting grooves 11 and is detachably mounted on the mounting grooves 11 via connectors 3. The main body 21 contains grouting channels 24 and grease injection channels 25. The input ends of the grout channel 24 and the grease injection channel 25 are respectively connected to the inner front end of the main body 21. The output end of the grout channel 24 is connected to the rear end of the main body 21. The output end of the grease injection pipe 23 is connected to the inner rear end of the main body 21. Generally, the output end of the grease injection channel 25 is connected to a tail shield sealing brush. The grout injection pipe 22 and the grease injection pipe 23 are respectively located on the inner front end of the main body 21. The output end of the grout injection pipe 22 is connected to the input end of the grout channel 24, and the output end of the grease injection pipe 23 is connected to the input end of the grease injection channel 25.

[0020] The working principle of this embodiment is as follows: During operation, cement slurry is transported through grouting pipe 22 to the front end of grouting channel 24, then along grouting channel 24, and finally discharged from the rear end of grouting channel 24. Mortar is injected into the back of the assembled pipe segment to realize the grouting operation. Grease is transported through grease injection pipe 23 to the front end of grease injection channel 25, then along grease injection channel 25, and finally discharged from the rear end of grease injection channel 25. Shield tail grease is injected into the tail shield sealing brush to play a sealing role such as water stoppage, thus realizing the grease injection operation. When grouting channel 24 or grease injection channel 25 is blocked, the main body 21 is removed from the installation groove 11, thereby realizing the disassembly of the grouting pipeline assembly 2. After that, a new grouting pipeline assembly 2 can be replaced, which can quickly deal with the pipeline blockage problem and make subsequent unblocking operations more convenient, effectively improving maintenance efficiency.

[0021] For example, the main body 21 is provided with mounting shoulders 26 on both sides, and the mounting shoulders 26 are provided with a plurality of positioning holes 261 arranged at intervals along the length direction of the main body 21. The mounting groove 11 is provided with mounting bosses 12 on both sides, and the mounting shoulders 26 are provided on the mounting bosses 12 to facilitate the positioning and installation of the main body 21. The mounting bosses 12 are provided with mounting holes 121 that correspond one-to-one with the positioning holes 261. The connector 3 includes a plurality of mounting bolts 31 that correspond one-to-one with the positioning holes 261. The mounting bolts 31 pass through the positioning holes 261 and are threadedly connected to the mounting holes 121, making disassembly and assembly simple.

[0022] For example, the inner side of the mounting shoulder 26 is provided with a countersunk hole 262 that corresponds one-to-one with the positioning hole 261. The bolt head of the mounting bolt 31 is located in the countersunk hole 262 to prevent the bolt head of the mounting bolt 31 from protruding and to ensure the overall flatness.

[0023] For example, the inner side of the main body 21 is provided with an observation window 27 that communicates with the grouting channel 24. The observation window 27 is covered with a sealing plate 271. Generally, the sealing plate 271 is fixed to the main body 21 by bolts. After the sealing plate 271 is removed, the flow of the grouting channel 24 can be checked through the observation window 27 and it can be cleaned.

[0024] For example, there are two grouting channels 24 and two grouting pipes 22 respectively. The grouting channels 24 and the grouting pipes 22 are connected one to one. The output ends of the two grouting pipes 22 are arranged in a figure-eight shape, so that there is sufficient space between the input ends of the two grouting pipes 22 to facilitate the connection between the grouting pipes 22 and the grouting device.

[0025] For example, the grouting channel 24 and the grease injection channel 25 are arranged in parallel, without interfering with each other, and the arrangement is reasonable. Generally, the grouting channel 24 and the grease injection channel 25 are arranged along the length of the main body 21 to ensure smooth delivery of grout and grease.

[0026] For example, the front end of the main body 21 is fixedly connected to a hanging plate 28, which has a lifting hole 281 for lifting the injection pipeline assembly 2.

[0027] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A structure for installing a grouting and grease injection line, characterized by: The device includes a tail shield shell and a grouting pipeline assembly. The inner side of the tail shield shell has multiple mounting grooves arranged around its axis. The grouting pipeline assembly includes a main body, a grouting pipe, and a grease injection pipe. The main body mates with the mounting grooves and is detachably mounted on the grooves via connectors. The main body contains a grouting channel and a grease injection channel. The input ends of the grouting channel and the grease injection channel respectively penetrate the inner front end of the main body. The output end of the grouting channel penetrates the rear end of the main body. The output end of the grease injection pipe penetrates the inner rear end of the main body. The grouting pipe and the grease injection pipe are respectively located on the inner front end of the main body. The output end of the grouting pipe is connected to the input end of the grouting channel, and the output end of the grease injection pipe is connected to the input end of the grease injection channel.

2. The installation structure of the grouting and grease injection pipeline according to claim 1, characterized in that: The main body has mounting shoulders on both sides, and multiple positioning holes are arranged at intervals along the length of the main body on the mounting shoulders. The mounting groove has mounting bosses on both sides, and the mounting shoulders are located on the mounting bosses. The mounting bosses have mounting holes that correspond one-to-one with the positioning holes. The connector includes multiple mounting bolts that correspond one-to-one with the positioning holes. The mounting bolts pass through the positioning holes and are threadedly connected to the mounting holes.

3. The installation structure of the grouting and grease injection pipeline according to claim 2, characterized in that: The inner side of the mounting shoulder is provided with countersunk holes that correspond one-to-one with the positioning holes, and the bolt head of the mounting bolt is located in the countersunk hole.

4. The installation structure of the grouting and grease injection pipeline according to claim 1, characterized in that: The inner side of the main body is provided with an observation window that communicates with the grouting channel, and the observation window is covered with a sealing plate.

5. The installation structure of the grouting and grease injection pipeline according to claim 1, characterized in that: The grouting channel and the grouting pipe are provided in two separate lines, and the grouting channel and the grouting pipe are connected in a one-to-one correspondence. The output ends of the two grouting pipes are arranged in a figure-eight shape.

6. The installation structure of the grouting and grease injection pipeline according to claim 1, characterized in that: The grouting channel and the grease injection channel are arranged in parallel.

7. The installation structure of the grouting and grease injection pipeline according to claim 1, characterized in that: The front end of the main body is fixedly connected to a hanging plate, and the hanging plate is provided with a hanging hole.

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