CN218725094U

CN218725094U - Shield constructs quick-witted advance slip casting piece pressurize test fixture

Info

Publication number: CN218725094U
Application number: CN202223104480.5U
Authority: CN
Inventors: 任振宇; 陈国涛; 吴强; 张文乐; 杨戌卯; 董继程
Original assignee: China Railway Engineering Equipment Group Shield Manufacturing Co Ltd
Current assignee: China Railway Engineering Equipment Group Shield Manufacturing Co Ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-03-24
Anticipated expiration: 2032-11-22

Abstract

The utility model belongs to the technical field of shield constructs the machine, concretely relates to shield constructs quick-witted leading slip casting piece pressurize test fixture, leading slip casting piece passes through welded fastening with leading slip casting pipe, the inside of leading slip casting piece has seted up the cylinder cavity, the cylinder cavity link up with the grout outlet of leading slip casting piece front end side; the tool comprises a sealing sleeve and an adapter, wherein the sealing sleeve is plugged into the cylindrical cavity from a slurry outlet hole of the advanced grouting block and is tightly connected with the inner wall of the cylindrical cavity; the adapter can be dismantled with the rear end of leading slip casting pipe and be connected, the centre of adapter is provided with to the silk joint, to the silk joint with have the hydraulic press of manometer and be connected, the edge of adapter is provided with the screw hole that is used for installing awl thread plug. The utility model discloses realize pressurize test fixture's used repeatedly, cancelled among the prior art welding, gouging and the operation process of polishing, alleviateed workman's work load, reduced manufacturing cost.

Description

Shield constructs quick-witted advance slip casting piece pressurize test fixture

Technical Field

The utility model belongs to the technical field of the shield constructs the machine, concretely relates to shield constructs quick-witted leading slip casting piece pressurize test fixture.

Background

The advanced grouting block is an important component of a shield body structural member of a shield machine and mainly plays roles in grouting, sealing and strength supporting, the key characteristics and manufacturing process difficulties of the advanced grouting block are welding quality and sealing performance of a welding seam, and after the welding of the advanced grouting block and an advanced grouting pipe is finished, water tightness pressure maintaining test needs to be carried out.

As shown in fig. 1, the existing advanced grouting block pressure maintaining test tool generally seals a grouting hole of an advanced grouting pipe and an advanced grouting block by welding a steel plate 1, the steel plate 1 is removed by an air gouging and polished to be flat after the pressure maintaining test is completed, and weld reinforcement and cutting slag are generated on the grouting block after the steel plate 1 is removed and are required to be polished to be flat; the thickness of the steel plate 1 is 20-40mm, and the number of the advanced grouting blocks is 10-18. Taking a 9-meter shield tunneling machine as an example, the number of the advanced grouting blocks is 15, if a pressure maintaining test is performed by welding the steel plate 1, the welding wire consumption of the welding seam is more than 60kg, the welding, air gouging and polishing operation amount is large, more operation waste is generated, in addition, the weight of the steel plate 1 used for welding is more than 400kg, the material cost is high, the steel plate 1 cannot be recycled, the steel plate 1 needs to be manufactured again, and the cost is high. Moreover, the welding, air gouging and polishing operations cause damage to the surface of the workpiece and poor surface quality.

Therefore, the problem to be solved at present is urgently needed to develop an installation type, reusable and low-manufacturing-cost pressure maintaining test tool for the advanced grouting block of the shield machine.

Disclosure of Invention

To the problem that exists among the prior art, the utility model provides a shield constructs quick-witted leading slip casting piece pressurize test fixture realizes pressurize test fixture's used repeatedly, has cancelled welding, gouging and the operation process of polishing among the prior art, has alleviateed workman's work load, has reduced manufacturing cost.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a shield constructs quick-witted leading slip casting piece pressurize test fixture, leading slip casting piece passes through welded fastening with leading slip casting pipe, the inside of leading slip casting piece is seted up the cylinder cavity, the cylinder cavity link up with the grout outlet of leading slip casting piece front end side mutually; the tool comprises a sealing sleeve and an adapter, wherein the sealing sleeve is plugged into the cylindrical cavity from a slurry outlet hole of the advanced grouting block and is tightly connected with the inner wall of the cylindrical cavity; the adapter can be dismantled with the rear end of leading slip casting pipe and be connected, the centre of adapter is provided with the butt wire and connects, the butt wire connects to be connected with the hydraulic press that has the manometer, the edge of adapter is provided with the screw hole that is used for installing awl screw plug.

Further, the sealing kit comprises a fastening screw, a fastening nut, a threaded sleeve, a multi-layer pressing plate and a plurality of sealing rubber strips; the fastening screw comprises a threaded rod and a screw head, and the multilayer pressing plate is sleeved on the upper part of the threaded rod in a penetrating manner; the threaded sleeve is sleeved outside the threaded rod, and the threaded sleeve is positioned below the multilayer pressing plate; the fastening nut is located below the threaded sleeve and connected with the threaded rod through threads, and a sealing rubber strip is pressed between the edges of two adjacent pressing plates.

Further, the sealing sleeve piece also comprises a handle, and the handle is welded at the bottom end of the threaded rod.

Further, the upper surface of the uppermost laminated plate in the multi-layer laminated plate is fixedly welded with the screw head.

Furthermore, an L-shaped groove is formed in the edge of the bottom of each laminated board, and the sealing rubber strips are placed in the L-shaped grooves.

Further, the adapter is cylindrical joint, and the front end is equipped with sealed screw, the adapter passes through threaded connection with leading slip casting pipe.

Compared with the prior art, the utility model has the advantages of it is following:

for solving among the prior art welding, gouging and the work load of polishing big, manufacturing cost is high, the poor problem of work piece surface quality, the utility model provides a shield constructs quick-witted leading slip casting piece pressurize test fixture, convenient operation, reasonable in design, low cost, change original welding steel sheet formula structure into the installation formula structure, can realize the used repeatedly of pressurize test fixture, improved the frock utilization ratio, cancelled among the prior art welding, gouging and the operation process of polishing, workman's work load has been alleviateed, manufacturing cost has been reduced, the manufacturing cycle has been shortened, can popularize and be applied to the manufacturing process of the shield machine body structure of similar structure.

Drawings

FIG. 1 is a schematic structural diagram of an advanced grouting block pressure maintaining test tool of a shield tunneling machine in the prior art;

fig. 2 is a schematic structural diagram of a pressure maintaining test tool for an advanced grouting block of a shield tunneling machine according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a sealing kit according to an embodiment of the present invention;

fig. 4 is a schematic longitudinal sectional view of a sealing sleeve according to an embodiment of the present invention;

figure 5 is a schematic structural diagram of an adapter according to an embodiment of the present invention.

The reference numbers in the figures denote:

1. the novel grouting device comprises a steel plate, 2 parts of a leading grouting block, 3 parts of a leading grouting pipe, 4 parts of a welding seam, 5 parts of a sealing sleeve, 6 parts of an adapter, 7 parts of a fastening screw rod, 701 parts of a threaded rod, 702 parts of a screw rod head, 8 parts of a fastening nut, 9 parts of a threaded sleeve, 10 parts of a pressing plate, 11 parts of a sealing rubber strip, 12 parts of a handle, 13.L-shaped grooves, 14 parts of a conical threaded plug, 15 parts of a screw joint, 16 parts of a cylindrical cavity and 17 parts of a grout outlet.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments.

As shown in fig. 2, the advanced grouting block 2 is connected with the advanced grouting pipe 3 through a welding seam 4, a cylindrical cavity 16 is formed in the advanced grouting block 2, the cylindrical cavity 16 is communicated with a grout outlet 17 in the side surface of the advanced grouting block 2, the cavity formed by the advanced grouting block 2 and the advanced grouting pipe 3 has a sealing requirement, and a pressure maintaining test is performed by using the advanced grouting block pressure maintaining test tool of the shield machine of the embodiment; this frock includes sealed external member 5 and adapter 6 two parts, and sealed external member 5 is used for the shutoff of pressurize test procedure sealed, and adapter 6 is used for pressurize test procedure exhaust, sealed and water injection. The sealing sleeve 5 is plugged into the cylindrical cavity 16 from a slurry outlet 17 of the advanced grouting block 2 and is tightly connected with the inner wall of the cylindrical cavity 16; as shown in fig. 5, the adapter 6 is detachably connected with the rear end of the advanced grouting pipe 3, a thread aligning joint 15 is arranged in the middle of the adapter 6, the thread aligning joint 15 is connected with a hydraulic press with a pressure gauge, and the hydraulic press is used for water injection and pressurization; the edge of adapter 6 is provided with the screw hole, through screw hole installation awl screw plug 14.

As shown in fig. 3 and 4, the sealing kit 5 includes a fastening screw 7, a fastening nut 8, a threaded sleeve 9, a multi-layer pressing plate 10, a plurality of sealing rubber strips 11 and a handle 12, wherein the number of the pressing plate 10 and the sealing rubber strips 11 can be increased or decreased according to the use condition, and in this example, six pressing plates 10 and five sealing rubber strips 11 are adopted. The fastening screw 7 comprises a threaded rod 701 and a screw head 702, and six pressing plates 10 are sleeved on the upper part of the threaded rod 701 in a penetrating manner; the threaded sleeve 9 is sleeved outside the threaded rod 701, and the threaded sleeve 9 is located below the six pressing plates 10; the fastening nut 8 is positioned below the threaded sleeve 9, the fastening nut 8 is in threaded connection with the threaded rod 701, and a sealing rubber strip 11 is pressed between the edges of two adjacent pressing plates 10. A handle 12 is welded to the bottom end of the threaded rod 701 to facilitate gripping of the sealing sleeve 5. The upper surface of the uppermost pressing plate 10 of the six pressing plates 10 is welded and sealed with the screw head 702, so that water leakage between the pressing plates 10 and the threaded rod 701 is avoided.

Specifically, an L-shaped groove 13 is formed in the edge of the bottom of each pressing plate 10, and the sealing rubber strips 11 are placed in the L-shaped grooves 13 and extruded between the two pressing plates 10.

Adapter 6 is cylindrical joint, and the front end is equipped with sealed screw thread, and adapter 6 passes through threaded connection, the installation of being convenient for is dismantled with leading slip casting pipe 3.

The working principle is as follows:

under fastening screw 7 and fastening nut 8 state of not screwing up, guarantee between the clamp plate 10 under the joint strip 11 circumstances of not extruding, fill in cylinder cavity 16 from the play thick liquid hole 17 of leading slip casting piece 2, after sealed external member 5 is installed in place, screw up fastening nut 8, extrude joint strip 11 between clamp plate 10 and the clamp plate 10 through swivel nut 9, and then realize sealed external member 5 and leading slip casting piece 2 between sealed, through joint strip 11 and the 16 inner walls extrusion friction of cylinder cavity simultaneously, realize sealed external member 5's fixed. Fasten adapter 6 in the rear end of leading slip casting pipe 3, connect the hydraulic press that has the manometer to nipple 15, carry out the water injection to the cavity of leading slip casting pipe 3 and leading slip casting piece 2, the gas outgoing in the cavity is followed to the water injection process from the screw hole, after waiting to fill water, use screw thread end cap 14 with the screw hole and fasten sealedly, then the hydraulic press continues to carry out the water injection pressurization, when water pressure rose to the set pressure value, pressurize a period, the pressurize in-process is judged through the change value of observing the manometer whether the welding seam 4 of leading slip casting piece 2 and leading slip casting pipe 3 leaks. And opening the hydraulic press to reduce the pressure after the pressure maintaining test is finished, taking out the conical threaded plug 14 on the threaded hole, and removing the sealing sleeve 5, thereby realizing the pressure maintaining test process of the whole advanced grouting block 2.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" or "an" and the like in the description and in the claims of this application do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Finally, it is to be noted that: the above description is only the preferred embodiment of the present invention, which is only used to illustrate the technical solution of the present invention, and is not used to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention is included in the protection scope of the present invention.

Claims

1. A pressure maintaining test tool for an advanced grouting block of a shield machine is characterized in that the advanced grouting block and an advanced grouting pipe are fixed through welding, a cylindrical cavity is formed inside the advanced grouting block, and the cylindrical cavity is communicated with a grout outlet on the side face of the front end of the advanced grouting block; the tool is characterized by comprising a sealing sleeve and an adapter, wherein the sealing sleeve is plugged into the cylindrical cavity from a slurry outlet hole of the advanced grouting block and is tightly connected with the inner wall of the cylindrical cavity; the adapter can be dismantled with the rear end of leading slip casting pipe and be connected, the centre of adapter is provided with to the silk joint, to the silk joint with have the hydraulic press of manometer and be connected, the edge of adapter is provided with the screw hole that is used for installing awl thread plug.

2. The shield machine advanced grouting block pressure maintaining test tool according to claim 1, wherein the sealing suite comprises a fastening screw, a fastening nut, a threaded sleeve, a multi-layer pressing plate and a plurality of sealing rubber strips; the fastening screw comprises a threaded rod and a screw head, and the multilayer pressing plate is sleeved on the upper part of the threaded rod in a penetrating manner; the threaded sleeve is sleeved outside the threaded rod, and the threaded sleeve is positioned below the multilayer pressing plate; the fastening nut is located below the threaded sleeve and connected with the threaded rod through threads, and a sealing rubber strip is pressed between the edges of two adjacent pressing plates.

3. The shield machine advanced grouting block pressure maintaining test tool according to claim 2, wherein the sealing sleeve further comprises a handle welded to the bottom end of the threaded rod.

4. The shield machine advanced grouting block pressure maintaining test tool according to claim 2, wherein the upper surface of the uppermost laminated plate in the multilayer laminated plate is welded and fixed with a screw head.

5. The shield machine advanced grouting block pressure maintaining test tool according to claim 2, wherein an L-shaped groove is formed in the bottom edge of each laminated plate, and the sealing rubber strip is placed in the L-shaped groove.

6. The shield machine advanced grouting block pressure maintaining test tool according to claim 1, wherein the adapter is a cylindrical adapter, a sealing thread is arranged at the front end of the adapter, and the adapter is in threaded connection with an advanced grouting pipe.