Interval segment grouting hole plugging blank cap

Abstract

The utility model relates to the technical field of blocking stifles, in particular to a blocking stifle for a grouting hole of an interval segment. The interval segment grouting hole plugging blank cap comprises a columnar body, external threads are formed in the outer side wall of the columnar body, a flange blind plate is arranged at the top end of the columnar body, a wrench clamping head is arranged in the middle of the top end of the flange blind plate, and a cap core assembly used for secondary plugging is inserted into the wrench clamping head. The interval segment grouting hole plugging blank cap has the advantages of being firmer in installation, high in safety and good in plugging effect.

Description

Technical Field

[0001] The utility model relates to the technical field of plugging and sealing covers, in particular to a plugging and sealing cover for a grouting hole of an interval pipe segment. Background Art

[0002] During the construction of subway tunnels, the excavated tunnels are fixed with grouting segments. After grouting, water leakage from the grouting holes of the segments is common during the operation of the shield tunnel in the subway. After the secondary grouting of some tunnels, there is water leakage from the hoisting holes, posing a long-term driving safety hazard. There is even sand and mud leakage, and water gushing onto the rails, seriously affecting the normal operation of trains.

[0003] However, the plastic blind covers installed in the early stage will be damaged and missing over time due to their own quality problems, and the water leakage problem will increase day by day. At present, the blind covers used for pipe segments are plastic blind covers, which have the following disadvantages: 1. Quality problems themselves, easy to damage, easy to corrode, easy to fall off and lost; 2. Unable to withstand the water and soil pressure on the outside of the pipe wall, not pressure-resistant, prone to water seepage; 3. The blind cover has a concave hexagonal head, which is not convenient to disassemble with pliers and wrenches; 4. The thread is short, and the length of screwing into the grouting hole is limited.

[0004] Therefore, it is necessary to provide a new sealing cover for the grouting holes of the interval pipe segments to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a plugging cover for the grouting holes of interval pipe segments which has a more firm installation and a higher safety.

[0006] The utility model provides a plugging cover for the grouting hole of the interval pipe segment, comprising: a columnar body, an outer wall of the columnar body is provided with an external thread, the top of the columnar body is provided with a flange blind plate, the middle part of the top of the flange blind plate is provided with a wrench clamp, and a cover core component for secondary plugging is inserted in the wrench clamp.

[0007] Preferably, the thread pitch of the external thread is 10 mm.

[0008] Preferably, the thread pitch of the external thread is 3.5 mm.

[0009] Preferably, the wrench chuck is a raised external hexagon or an external square.

[0010] Preferably, the cover core assembly includes an extension rod, a sealing screw disk is fixedly installed at the bottom end of the extension rod, the thread of the sealing screw disk is the same as the external thread, and the extension rod is provided with an intermediate ring between the sealing screw disk and the columnar body (1), a cavity is opened in the intermediate ring, and a plurality of first overflow holes are evenly opened on the outer wall of the intermediate ring, the extension rod is provided with a countersunk hole, and a plurality of second overflow holes connected to the cavity are opened at the bottom end of the countersunk hole, and a snap-on convex ring is fixedly installed at the bottom end of the intermediate ring, and the outer wall diameter of the snap-on convex ring is equal to the inner cavity diameter of the columnar body.

[0011] Preferably, the extension rod is provided with a sealing disk located above the middle spacer ring, the outer wall of the sealing disk is slidably matched with the inner wall of the columnar body, the outer wall of the sealing disk is provided with a groove, and a sealing ring is installed in the groove.

[0012] Preferably, the columnar body, the flange blind plate and the wrench chuck are made of alloy carbon steel.

[0013] Compared with the related art, the plugging cover of the interval segment grouting hole provided by the utility model has the following advantages:

[0014] Beneficial effects:

[0015] 1. The utility model provides a plugging cover for the grouting hole of the interval pipe segment. By arranging an external thread outside the columnar body and arranging a wrench clamp on the flange blind plate, it is convenient to rotate and twist. The whole is supported by alloy carbon steel. The quality of the plugging cover is significantly improved, the defective rate of the workpiece is reduced, and the loss of spare parts is saved;

[0016] 2. By arranging a cover core assembly in the wrench chuck, the cover core assembly cooperates with the extension rod, the sealing screw disk, the middle spacer ring, the clamping convex ring, the sealing disk, the sealing ring, the countersunk hole, the second overflow hole, the cavity and the first overflow hole to facilitate further comprehensive blocking of the grouting hole and improve the blocking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural schematic diagram of a preferred embodiment of a plugging cover for a grouting hole of a segment provided by the utility model;

[0018] Figure 2 A schematic diagram of the axial section structure of the plugging cover for the grouting hole of the interval pipe segment provided by the utility model;

[0019] Figure 3 A schematic diagram of the explosion structure of the plugging and covering of the interval segment grouting hole provided by the utility model;

[0020] Figure 4 A schematic diagram of the structure of the interior of the plugging cover for the grouting hole of the interval pipe segment provided by the utility model;

[0021] Figure 5 The utility model provides a schematic structural diagram of a wrench clamping head for sealing and plugging the grouting hole of the interval pipe segment in a raised outer square shape.

[0022] Numbers in the figure: 1, columnar body; 11, external thread; 2, flange blind plate; 21, wrench clamp; 3, cover core assembly; 31, extension rod; 32, sealing screw disk; 33, middle spacer ring; 331, clamping convex ring; 34, sealing disk; 35, sealing ring; 301, countersunk hole; 302, second overflow hole; 303, cavity; 304, first overflow hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0025] See also Figures 1 to 5 The utility model provides a plugging cover for a grouting hole of a section pipe segment, and the plugging cover for the grouting hole of the section pipe segment comprises:

[0026] A columnar body 1, wherein an outer wall of the columnar body 1 is provided with an external thread 11, a flange blind plate 2 is provided at the top of the columnar body 1, a wrench clamp 21 is provided at the middle of the top of the flange blind plate 2, and a cap core assembly 3 for secondary plugging is inserted into the wrench clamp 21;

[0027] The cover core assembly 3 includes an extension rod 31, a sealing screw disk 32 is fixedly installed at the bottom end of the extension rod 31, the thread of the sealing screw disk 32 is the same as the external thread 11, and a middle spacer ring 33 is installed above the extension rod 31, a cavity 303 is opened in the middle spacer ring 33, and a plurality of first overflow holes 304 are evenly opened on the outer wall of the middle spacer ring 33, the extension rod 31 is opened with a countersunk hole 301, and a plurality of second overflow holes 302 connected with the cavity 303 are opened at the bottom end of the countersunk hole 301, and a snap-on convex ring 331 is fixedly installed at the bottom end of the middle spacer ring 33, and the outer wall diameter of the snap-on convex ring 331 is equal to the inner cavity diameter of the columnar body 1.

[0028] The columnar body 1 , the flange blind plate 2 and the wrench chuck 21 are made of alloy carbon steel.

[0029] It should be noted that when in use, firstly wrap the sealing screw disc 32 of the cover core assembly 3 with the raw material tape and place it in the grouting hole of the pipe segment, and then rotate the extension rod 31 to drive the sealing screw disc 32 to rotate until it is screwed to the bottom of the grouting hole to perform the first plugging of the grouting hole, and then insert the columnar body 1 and the flange blind plate 2 on the extension rod 31, and wrap the raw material tape on the external thread 11, and then place the external thread 11 of the columnar body 1 above the grouting hole, and then use the wrench clamp to fit on the wrench clamp head 21, and rotate The wrench is used to rotate the entire columnar body 1, and its external thread 11 is driven to be screwed into the grouting hole until the bottom of the columnar body 1 is clamped on the clamping convex ring 331 of the middle spacer ring 33, completing the second sealing. Then, after screwing, the foam glue is passed through the syringe, thereby passing through the counterbore 301, flowing through the second overflow hole 302, the cavity 303 and the first overflow hole 304, and flowing into the grouting hole, the gap between the sealing screw disk 32 and the columnar body 1, completing the middle separation, realizing the third sealing, and realizing comprehensive sealing of the grouting hole.

[0030] The thread pitch of the external thread 11 is 10 mm, so that it is easy to use the coarse thread to match the corresponding grouting hole, and the thread length is adapted according to the depth of the grouting hole, so that the columnar body 1 is completely screwed into the grouting hole;

[0031] Among them, the thread pitch of the external thread 11 is 3.5mm. Similarly, it is set as a fine thread mouth here, which can be tightened and sealed with the fine thread grouting hole.

[0032] In the embodiments of the present invention, please refer to Figure 1 and Figure 5 The wrench chuck 21 is a raised external hexagon or external square.

[0033] It should be noted that this makes it easy to use different wrenches to quickly clamp the sleeve and perform the screwing operation.

[0034] In the embodiments of the present invention, please refer to Figure 2 and Figure 4 The extension rod 31 is provided with a sealing disk 34 located above the middle spacer ring 33, the outer wall of the sealing disk 34 is slidably matched with the inner wall of the columnar body 1, the outer wall of the sealing disk 34 is provided with a groove, and a sealing ring 35 is installed in the groove;

[0035] It should be noted that after the columnar body 1 is inserted on the extension rod 31, the hollow columnar body 1 and the extension rod 31 passing through the through hole of the wrench clamp 21 can be sealed and separated by the cooperation of the sealing disk 34 and the sealing ring 35, thereby further preventing water seepage.

[0036] The working principle of the plugging and covering of the interval segment grouting hole provided by the utility model is as follows:

[0037] When in use, firstly wrap the sealing screw disc 32 of the cover core assembly 3 with the raw material tape and place it in the grouting hole of the pipe segment, and then rotate the extension rod 31 to drive the sealing screw disc 32 to rotate until it is screwed to the bottom of the grouting hole to seal the grouting hole for the first time, and then insert the columnar body 1 and the flange blind plate 2 on the extension rod 31, and wrap the raw material tape on the external thread 11, and then place the external thread 11 of the columnar body 1 above the grouting hole, and then use the wrench clamp to fit on the wrench clamp 21, and rotate the wrench to turn the screw disc 32. The entire columnar body 1 is moved to drive its external thread 11 to be screwed into the grouting hole until the bottom of the columnar body 1 is clamped on the clamping convex ring 331 of the middle spacer ring 33 to complete the second plugging. Then, after screwing, the foam glue is passed through the syringe to flow through the counterbore 301, the second overflow hole 302, the cavity 303 and the first overflow hole 304 into the grouting hole, the gap between the sealing screw plate 32 and the columnar body 1 to complete the middle separation, realize the third plugging, and realize the comprehensive plugging of the grouting hole;

[0038] After the columnar body 1 is inserted on the extension rod 31, the hollow columnar body 1 and the extension rod 31 passing through the through hole of the wrench clamp 21 can be sealed and separated by the cooperation of the sealing disk 34 and the sealing ring 35, so as to further prevent water seepage.

[0039] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A plugging and capping method for grouting holes of interval pipe segments, comprising: A columnar body (1), characterized in that an outer wall of the columnar body (1) is provided with an external thread (11), a flange blind plate (2) is provided at the top end of the columnar body (1), a wrench clamp (21) is provided at the middle of the top end of the flange blind plate (2), a cover core assembly (3) is provided in a sliding sleeve inside the wrench clamp (21), the cover core assembly (3) comprises an extension rod (31), a sealing screw disk (32) is fixedly installed at the bottom end of the extension rod (31), the thread of the sealing screw disk (32) is the same as the external thread (11), and the extension rod (31) is located at the sealing screw disk (31). 2), a middle spacer ring (33) is installed above the middle spacer ring (33), a cavity (303) is opened in the middle spacer ring (33), and a plurality of first overflow holes (304) are evenly opened on the outer wall of the middle spacer ring (33), the extension rod (31) is opened with a countersunk hole (301), a plurality of second overflow holes (302) connected with the cavity (303) are opened at the bottom end of the countersunk hole (301), and a clamping convex ring (331) is fixedly installed at the bottom end of the middle spacer ring (33), and the outer wall diameter of the clamping convex ring (331) is equal to the inner cavity diameter of the columnar body (1).

2. The plugging and covering of the grouting holes of the interval pipe segments according to claim 1 is characterized in that: The external thread (11) is a thick thread, and its thread pitch is 10 mm.

3. The plugging and capping of the grouting holes of the interval pipe segments according to claim 1 is characterized in that: The external thread (11) is a thin thread, and its thread pitch is 3.5 mm.

4. The plugging and covering of the grouting holes of the interval pipe segments according to claim 1 is characterized in that: The wrench clamp (21) is a raised external hexagonal or external square.

5. The plugging and covering of the grouting holes of the interval pipe segments according to claim 1 is characterized in that: The extension rod (31) is provided with a sealing disk (34) located above the middle spacer ring (33); the outer wall of the sealing disk (34) is slidably matched with the inner wall of the columnar body (1); the outer wall of the sealing disk (34) is provided with a groove, and a sealing ring (35) is installed in the groove.

6. The plugging and capping of the grouting holes of the interval pipe segments according to claim 1 is characterized in that: The columnar body (1), the flange blind plate (2) and the wrench clamp (21) are made of alloy carbon steel.

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