CN212900269U

CN212900269U - Convenient recycling joint device for connecting grouting pipe and advanced small catheter

Info

Publication number: CN212900269U
Application number: CN202021710779.3U
Authority: CN
Inventors: 袁海波; 罗成; 王茂林; 敖凌宇; 杨仁全
Original assignee: China Railway No 5 Engineering Group Co Ltd; Construction Engineering Co Ltd of China Railway No 5 Engineering Group Co Ltd
Current assignee: China Railway No 5 Engineering Group Co Ltd; Construction Engineering Co Ltd of China Railway No 5 Engineering Group Co Ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-04-06
Anticipated expiration: 2030-08-17

Abstract

The invention relates to the field of tunnel surrounding rock grouting reinforcement construction, in particular to a convenient recycling joint device for connecting a grouting pipe and a small advanced guide pipe. Respectively welding the limiting nails at the tail ends of the small advanced guide pipe and the grouting pipe; a check valve and two rubber gaskets are arranged in the connecting sleeve, and then the small guide pipe and the limiting nails on the grouting pipes are aligned to the notches at the two ends of the connecting sleeve and are pushed and rotated along the longitudinal direction; then the bolt is inserted into the hole at the outer side of the connecting sleeve, so that the connection of the leading small guide pipe and the grouting pipe is realized. The invention solves the problems of low installation efficiency, poor sealing, material consumption and large welding work amount of the existing advanced small conduit grouting joint, ensures the quality, is safe and reliable, and has higher application and popularization values.

Description

Convenient recycling joint device for connecting grouting pipe and advanced small catheter

Technical Field

The invention relates to the technical field of tunnel surrounding rock grouting reinforcement construction, in particular to a transition joint for connecting a grouting pipe and a small advanced guide pipe.

Background

In the tunnel country rock reinforcement engineering at present, the traditional welded joint is adopted to most in the construction of leading little pipe pressure slip casting, namely the galvanized steel pipe that uses a section both ends car silk, and one end welding is in leading little pipe afterbody, and one end threaded connection slip casting pipe, only thick liquid ball valve switch is installed to galvanized steel pipe intermediate unit. The connection method has the following problems in the implementation process: the grouting joint and the advanced small conduit are connected and need to be welded one by one, the working hours are long, and the work efficiency is low; the galvanized steel pipe and the small guide pipe are connected in a welding mode, a gap exists between the galvanized steel pipe and the small guide pipe, a sealing device is not arranged, the sealing performance is poor, the slurry leakage phenomenon occurs in the grouting process, and the grouting pressure cannot reach the designed value; after grouting, the welded joint is difficult to remove and recycle, and the galvanized steel pipe and the ball valve switch can be used only once, so that the defects of material waste and the like are caused. The existing connecting devices include a hollow anchor rod grouting connector (patent number 201921571397.4), a direct-insertion type quick grouting connector (201720232935.1), a rotary grouting connector (201620991153.1) for a rotary power pump, a self-drilling type hollow anchor rod grouting connector (201510594732.2) and a self-locking type grouting connector (200920092920.5). Although these connectors are improved to various degrees compared to conventional connectors, the following disadvantages still exist: the components are complex, the main connection mode is threaded connection, the connection process is complicated, the threads are easily blocked by foreign matters such as cement paste and the like, and the maintenance is difficult. The current requirement to tunnel engineering construction progress is extremely high, must improve current piecing devices to reduce material and human cost.

Disclosure of Invention

The utility model discloses the main technical problem who solves is: the utility model provides a but quick connection advanced little pipe and slip casting pipe and cyclic utilization's connecting device has characteristics such as easy operation, convenient to use, take one's place fast, cyclic utilization to in solving tunnel country rock slip casting and strengthening the work progress, slip casting joint installation procedure is loaded down with trivial details, the extravagant problem of joint material.

The technical scheme of the utility model is that:

the utility model provides a convenient cyclic utilization piecing devices for connecting slip casting pipe and leading little pipe, includes the joint sleeve, and the joint sleeve comprises the changeover portion in the middle of and the joint section at both ends, has L shape breach on the joint section wall at both ends, and the other boss that has of breach has, has the round hole to be used for installing the bolt on the boss.

The round holes of two L shape breachs and two bosss distribute coaxially, and a bolt can insert simultaneously in the round hole of two bosss.

The diameter of the transition section is smaller than that of the joint section, and a rubber gasket is arranged at the joint of the transition section and the joint section.

A check valve is arranged in the transition section.

The check valve comprises middle thick, the thin discoid baffle and the handle in edge, and discoid baffle is located the changeover portion inside, and the handle is worn out from the wall of changeover portion, can drive discoid baffle through rotating the handle and open or close the changeover portion.

The two joint sections are respectively matched with the grouting pipe or the advanced small guide pipe, the limiting nails are arranged on the pipe walls of the grouting pipe and the advanced small guide pipe, the limiting nails are matched with the L-shaped gaps and are clamped at the tail ends of the L-shaped gaps through bolts.

The check valve is made of galvanized steel, the handle is U-shaped, and a plane formed by the central lines of the U-shaped handle and the plane of the disc-shaped baffle form a certain included angle; the check valve is arranged in the joint sleeve and can rotate freely to change the flow state of the transition section.

The bolt is an iron cylinder with one end provided with an anti-falling hook.

The limiting nail is a metal cylinder and is fixed by welding.

The utility model discloses the theory of operation is: the L-shaped notches at the two ends of the joint sleeve are meshed with the limiting nails on the pipelines, the limiting nails are limited by the bolts, the joint sleeve and the pipelines at the two ends are prevented from relative displacement, and meanwhile, the check valve is fixed by the bolts to keep the valve in an opening or closing state.

Compare with current slip casting joint, the beneficial effects of the utility model are that:

1. the welding engineering quantity is far less than that of the traditional welding connection mode. The traditional welding connection mode needs to weld the galvanized steel pipe for a circle, the welding work amount is large, and the quality problems in stress concentration and the like can be caused. According to the scheme, only one limit nail is welded at the tail end of the grouting pipe and each advanced small guide pipe, and the welding work amount is much smaller than that of the traditional method for welding the galvanized steel pipe.

2. The adopted connection mode is superior to the existing threaded connection. Firstly, the screw thread is easy to be stained with mud and other stains in the tunnel environment, and is easy to block during rotation, and the manual operation is not smooth; secondly compare with manual rotatory screw thread, this scheme only need with little pipe and slip casting pipe card income connecting sleeve, rotate a little, insert the bolt and can link firmly, operate extremely portably fast.

3. The components can be reused. After grouting, the check valve is closed, and after cement slurry is initially set, the joint can be detached and washed clean for later use.

Additionally, the utility model discloses slip casting piecing devices have simple structure, convenient operation, easily maintenance, difficult impaired, application scope wide, characteristics such as easily carry, the leading tubule in the specially adapted tunnel country rock reinforcement engineering is connected with the slip casting pipe.

Drawings

Fig. 1 is a schematic view of the device of the present invention.

Fig. 2 is an appearance diagram of the joint sleeve of the present invention.

Fig. 3 is a schematic cross-sectional view of the joint sleeve of the present invention.

Fig. 4 is the schematic view of the check valve of the present invention.

Fig. 5 is a schematic view of the rubber gasket of the present invention.

Fig. 6 is a schematic view of the plug of the present invention.

Fig. 7 is a schematic view of the connection between the stop pin and the guide tube according to the present invention.

Fig. 8 is an exploded view of the present invention.

In the figure: 1. the joint comprises a joint sleeve, 2, a check valve, 3, a rubber gasket, 4, a bolt, 5, a limit nail, 6, a small advanced guide pipe, 7 and a grouting pipe.

Detailed Description

As shown in figure 1, the convenient grouting joint device for cyclic utilization consists of a joint sleeve 1, a check valve 2, a rubber gasket 3, a bolt 4 and a limit nail 5. The joint sleeve 1 consists of a transition section with a smaller middle diameter and joint sections with larger diameters at two ends, a check valve 2 is arranged in the transition section, and two rubber gaskets 3 are arranged at the reducing positions of the transition section and the joint sections; the wall surfaces of the joint sections at the two ends are provided with L-shaped gaps, bosses are arranged beside the gaps, and round holes are formed in the bosses and used for installing bolts 4. The check valve 2 material is zinc-plated steel, by middle thick, edge thin discoid baffle and the U type handle is constituteed, and U type handle central line constitution plane is certain contained angle with the baffle plane, and discoid baffle seals the changeover portion when U type handle turns left to paste tight joint sleeve 1 pipe wall, and the plane that discoid baffle place is parallel with the axis of changeover portion when U type handle turns right to paste tight joint sleeve 1 pipe wall.

The limiting nail 5 is fixedly welded at the tail ends of the advanced small guide pipe 6 and the grouting pipe 7, the advanced small guide pipe 6 and the grouting pipe 7 are inserted into the joint section of the connecting sleeve and rotate, and the limiting nail 5 on the guide pipe is meshed with the L-shaped notch at the end part of the connecting sleeve; the valve handle is rotated to be tightly attached to the outer wall of the connecting sleeve 1, the bolt 4 is inserted into two holes in the outer portion of the connecting sleeve 1, and the U-shaped handle and the two limit nails 5 are clamped.

The following further describes embodiments of the present invention with reference to the accompanying drawings:

a. the check valve 2 is arranged in the joint sleeve 1 in advance.

b. As shown in fig. 6, a stop pin 5 is welded to the outer side of the tail end of each pre-buried small advanced conduit 7, and a stop pin 5 is also welded to the tail of the grouting pipe 6.

c. The rubber gaskets are attached to the inner closing of the adapter sleeve 1 (one rubber gasket is respectively arranged at each end of one sleeve).

d. An L-shaped notch at the end part of the joint sleeve 1 provided with the check valve 2 and the rubber gasket 4 is aligned with a limit nail 5 on the small advanced guide pipe 7, and the small advanced guide pipe 7 is embedded into the joint sleeve 1 and slightly rotated, so that the joint sleeve 1 is meshed with the small advanced guide pipe 7. In this way, the adapter sleeve 1 is mounted at the end of each of the small lead tubes 7.

e. The stop pin 5 of the grouting pipe 6 is aligned with the L-shaped notch of the installed joint sleeve 1, longitudinally pushed and rotated, so that the stop pin and the L-shaped notch are occluded with each other, the check valve 2 is opened, and the bolt 4 is inserted.

f. And performing pressurized grouting.

g. And after grouting is finished, the bolt 4 is pulled out, the grouting pipe 6 is taken down, and the check valve 2 is closed.

h. And e, repeating the steps e, f and g, and circularly performing grouting construction.

i. And (5) after the cement paste is initially set, the joint device can be detached and cleaned for later use in time.

Claims

1. A convenient cyclic utilization piecing devices for connecting slip casting pipe and leading little pipe, includes to connect sleeve (1), its characterized in that: the joint sleeve (1) is composed of a middle transition section and joint sections at two ends, L-shaped notches are formed in the wall surfaces of the joint sections at the two ends, bosses are arranged beside the notches, and round holes are formed in the bosses and used for installing bolts (4).

2. The easy recycling coupling device for connecting a slip casting pipe and a small lead pipe according to claim 1, wherein: the round holes of two L-shaped gaps and two bosses are coaxially distributed, and one bolt (4) can be simultaneously inserted into the round holes of the two bosses.

3. The easy recycling joint device for connecting a grouting pipe and a small advanced conduit according to claim 2, characterized in that: the diameter of the transition section is smaller than that of the joint section, and a rubber gasket is arranged at the joint of the transition section and the joint section.

4. The easy recycling joint device for connecting a grouting pipe and a small advanced conduit according to claim 2, characterized in that: a check valve (2) is arranged in the transition section.

5. The easy recycling joint device for connecting a grouting pipe and a small advanced conduit according to claim 4, characterized in that: check valve (2) comprise middle thick, the thin discoid baffle and the handle in edge, and discoid baffle is located the changeover portion inside, and the handle is worn out from the wall of changeover portion, can drive discoid baffle through rotating the handle and open or close the changeover portion.

6. The easy recycling joint device for connecting a grouting pipe and a small advanced conduit according to claim 5, characterized in that: the two joint sections are respectively matched with the grouting pipe (6) or the advanced small guide pipe (7), the limiting nail (5) is arranged on the pipe wall of the grouting pipe (6) and the advanced small guide pipe (7), the limiting nail (5) is matched with the L-shaped notch, and the limiting nail (5) is clamped at the tail end of the L-shaped notch through the bolt (4).

7. The easy recycling joint device for connecting a grouting pipe and a small advanced conduit according to claim 5, characterized in that: the check valve (2) is made of galvanized steel, the handle is U-shaped, and a plane formed by the central lines of the U-shaped handle and the plane of the disc-shaped baffle form a certain included angle; the check valve (2) is arranged in the joint sleeve (1) and can rotate freely to change the flow state of the transition section.

8. The easy recycling coupling device for connecting a slip casting pipe and a small lead pipe according to claim 7, wherein: the U-shaped handle can be clamped between the transition section and the bolt (4), and is provided with a left clamping stop position and a right clamping stop position which respectively correspond to the opening and closing of the transition section.

9. The easy recycling joint device for connecting a grouting pipe and a small advanced conduit according to any one of claims 2 to 8, characterized in that: the bolt (4) is an iron cylinder with one end provided with an anti-falling hook.

10. The easy recycling joint device for connecting a grouting pipe and a small advanced conduit according to claim 6, characterized in that: the limiting nail (5) is a metal cylinder and is fixed by welding.