Auxiliary device for shield tunneling machine to go out of hole in narrow working well and construction method of auxiliary device

Abstract

The invention provides an auxiliary device for a shield tunneling machine to go out of a hole in a narrow working well and a construction method thereof.The auxiliary device comprises at least two auxiliary units, and each auxiliary unit comprises a triangular stress frame fixed to the side wall of the shield tunneling machine, a jacking force back fixed to the well wall of the shield working well and a jacking force back fixed to the side wall of the shield tunneling machine; the hydraulic oil cylinder is arranged on the oil cylinder guide supporting rod in a lying mode and located between the right rear portion of the triangular stress frame and the right front portion of the jacking force back; at least one middle support is selectively placed between the base of the hydraulic oil cylinder and the right front of the jacking force back so as to prolong the supporting distance between the right rear portion of the triangular stress frame and the right front of the jacking force back. Through structural design of the auxiliary device, on the basis of increasing the number of the middle supports, the overall length of the auxiliary unit is gradually increased, the shield tunneling machine is gradually pushed to the preset position, and the shield tunneling machine can go out of a hole conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of shield construction, and in particular to an auxiliary device for a shield machine exiting a narrow working shaft and a construction method thereof. Background Art

[0002] Shield technology is the cornerstone of modern tunnel construction, and plays an irreplaceable role in the development of urban underground space. The shield machine's entry and exit is particularly critical. It is not only the starting point and end point of the entire tunnel excavation process, but also the focus of technology and challenges.

[0003] In the traditional tunneling mode, large working shafts provide the necessary space for shield machine operations, but the resulting site occupation and impact on the surrounding environment cannot be ignored. However, in an urban environment where every inch of land is valuable, especially in the face of a small working shaft, this mode seems to be insufficient. Limited space means that traditional equipment cannot be used, and operational flexibility is greatly limited; what's worse, safety risks increase sharply, and accidents may occur if you are not careful, which not only threatens the lives of construction workers, but also seriously hinders the progress of the project.

[0004] In view of the shortcomings of the shield machine exiting a narrow working shaft in the prior art, those skilled in the art have been looking for solutions. Summary of the invention

[0005] The purpose of the present invention is to provide an auxiliary device and a construction method for a shield machine exiting a narrow working shaft, which can solve the problem that the shield machine exiting a narrow working shaft is difficult to operate flexibly due to limited space.

[0006] In order to solve the above technical problems, the present invention provides an auxiliary device for a shield machine to exit a tunnel in a narrow working shaft, the auxiliary device for a shield machine to exit a tunnel in a narrow working shaft comprises: at least two auxiliary units, each auxiliary unit comprises: a triangular force frame, a hydraulic cylinder, a cylinder guide support rod, a jacking back and at least one intermediate support, the triangular force frame is fixed on the side wall of the shield machine, the jacking back is fixed on the wall of the shield working shaft, the hydraulic cylinder lies on the cylinder guide support rod and is located between the rear of the triangular force frame and the front of the jacking back; at least one intermediate support can be selectively placed between the base of the hydraulic cylinder and the front of the jacking back to extend the support distance between the rear of the triangular force frame and the front of the jacking back.

[0007] Optionally, in the auxiliary device for the shield machine to exit a narrow working shaft, each triangular force-bearing frame includes: a first steel section and a second steel section fixed to one end of the first steel section, the first steel section, the second steel section and the shield machine together form a right-angled triangle, and the shield machine and the second steel section are two right-angled sides of the right-angled triangle.

[0008] Optionally, in the auxiliary device for exiting a shield machine in a narrow working shaft, the angle between the first steel section and the second steel section is in the range of 60° to 80°.

[0009] Optionally, in the auxiliary device for the shield machine to exit a narrow working shaft, the cylinder guide support rod is an I-beam, which serves as a guide channel when the hydraulic cylinder is pushed.

[0010] Optionally, in the auxiliary device for the shield machine exiting a narrow working shaft, each of the intermediate supports includes: a steel pipe and a rectangular steel plate welded and fixed to both ends of the steel pipe.

[0011] Optionally, in the auxiliary device for the shield machine to exit a narrow working shaft, the jacking back is a welded steel plate box.

[0012] Optionally, in the auxiliary device for exiting a shield machine from a narrow working shaft, the hydraulic cylinder is a large jacking force cylinder.

[0013] Optionally, in the auxiliary device for the shield machine exiting a narrow working shaft, the number of auxiliary units is two, which are symmetrically fully welded to the lower part of the side wall of the shield machine.

[0014] The present invention also provides a construction method for an auxiliary device for a shield machine exiting a narrow working shaft, and the construction method for an auxiliary device for a shield machine exiting a narrow working shaft comprises:

[0015] S1. The lower part of the side wall of the shield machine is fully welded with at least two triangular force frames of the auxiliary units. At the same time, the top force back of each auxiliary unit is welded and fixed to the wall of the shield working shaft directly behind the corresponding triangular force frame;

[0016] S2. Place the cylinder guide support rod in each auxiliary unit on the ground behind the triangular force frame, and place the hydraulic cylinder on the cylinder guide support rod; the top of the hydraulic cylinder faces the triangular force frame, and the base of the hydraulic cylinder rests on the back of the top force;

[0017] S3, start the hydraulic cylinder, which pushes the triangular force frame located in front of it and the shield machine fixed to it forward;

[0018] S4, retract the hydraulic cylinder and install an intermediate support between the hydraulic cylinder and the jacking backrest to extend the support distance between the rear of the triangular force frame and the front of the jacking backrest;

[0019] S5, repeatedly executing S3 and S4 until the shield machine is pushed to a predetermined position;

[0020] S6. Cut off all the triangular load-bearing frames that are fully welded on the lower part of the side wall of the shield machine so that the shield machine can exit the tunnel normally later.

[0021] In the auxiliary device and construction method for the shield machine exiting a narrow working shaft provided by the present invention, the auxiliary device for the shield machine exiting a narrow working shaft includes: at least two auxiliary units, each of which includes: a triangular force frame, a hydraulic cylinder, a cylinder guide support rod, a jacking back and at least one intermediate support, the triangular force frame is fixed on the side wall of the shield machine, the jacking back is fixed on the wall of the shield working shaft, the hydraulic cylinder lies on the cylinder guide support rod and is located between the rear of the triangular force frame and the front of the jacking back; at least one intermediate support can be selectively placed between the base of the hydraulic cylinder and the front of the jacking back to extend the support distance between the rear of the triangular force frame and the front of the jacking back. By structurally designing the auxiliary device, based on the method of increasing the number of intermediate supports, the overall length of the auxiliary unit is gradually extended, and the shield machine is gradually pushed to a predetermined position, which is convenient for the shield machine to exit the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the present disclosure will become more apparent through a more detailed description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present disclosure.

[0023] Figure 1 It is a schematic plan view of an auxiliary device for a shield machine exiting a narrow working shaft in one embodiment of the present invention;

[0024] Figure 2 It is a side view of an auxiliary device for a shield machine exiting a narrow working shaft in one embodiment of the present invention;

[0025] Figure 3 It is a structural schematic diagram of a triangular force-bearing frame in one embodiment of the present invention;

[0026] Figure 4 is a schematic structural diagram of an intermediate support in one embodiment of the present invention;

[0027] Figure 5 It is a schematic structural diagram of a top force back in one embodiment of the present invention;

[0028] Figure 6 2 is a schematic structural diagram of a guide support rod of an oil cylinder in one embodiment of the present invention;

[0029] Figure 7 It is a construction flow chart of the auxiliary device of the present invention.

[0030] In the figure:

[0031] 100 - auxiliary unit;

[0032] 1-triangular force frame; 11-first steel section; 12-second steel section;

[0033] 2-Hydraulic cylinder;

[0034] 3-Cylinder guide support rod;

[0035] 4- Push your back;

[0036] 5-middle support; 51-steel pipe; 52-rectangular steel plate;

[0037] 6- Shield machine. DETAILED DESCRIPTION

[0038] The following is a further detailed description of the auxiliary device for the shield machine exiting a narrow working shaft and the construction method thereof proposed by the present invention in combination with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0039] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0040] In the description of the invention, it is necessary to understand that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] In the invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to the specific circumstances.

[0043] Please refer to Figure 1 and Figure 2 The auxiliary device for the shield machine exiting a narrow working shaft includes: at least two auxiliary units 100, each auxiliary unit 100 includes: a triangular force frame 1, a hydraulic cylinder 2, a cylinder guide support rod 3, a jacking back 4 and at least one intermediate support 5, the triangular force frame 1 is fixed on the side wall of the shield machine 6, the jacking back 4 is fixed on the wall of the shield working shaft, the hydraulic cylinder 2 lies on the cylinder guide support rod 3, and is located between the rear of the triangular force frame 1 and the front of the jacking back 4; at least one intermediate support 5 can be selectively placed between the base of the hydraulic cylinder 2 and the front of the jacking back 4 to extend the support distance between the rear of the triangular force frame 1 and the front of the jacking back 4.

[0044] like Figure 1 As shown, in this embodiment, the number of auxiliary units 100 is two, which are symmetrically fully welded to the lower part of the side wall of the shield machine 6.

[0045] For further information, please refer to Figure 3 , each triangular force frame 1 includes: a first steel section 11 and a second steel section 12 fixed to one end of the first steel section 11, the first steel section 11, the second steel section 12 and the shield machine 6 together form a right triangle, and the shield machine 6 and the second steel section 12 are the two right angles of the right triangle. In other words, the triangular force frame 1 is welded from two sections of steel sections, and is fully welded to the body of the shield machine 6 to form a stable triangular structure, wherein the angle between the first steel section 11 and the second steel section 12 ranges from 60° to 80°. Here, the second steel section 12 is subsequently used as a bearing surface for bearing the thrust force of the hydraulic cylinder 2, and the second steel section 12 is perpendicular to the hydraulic cylinder 2, which can not only improve the stability and load-bearing capacity of the hydraulic cylinder 2, but also facilitate operation, ensuring safety and efficiency during use.

[0046] In this embodiment, the cylinder guide support rod 3 is an I-beam, which serves as a guide channel when the hydraulic cylinder 2 is pushed, so as to prevent the hydraulic cylinder 2 from tilting in direction during the pushing process and losing part of the pushing force.

[0047] Please refer to Figure 4Each of the intermediate supports 5 includes a steel pipe 51 and rectangular steel plates 52 welded and fixed to both ends of the steel pipe 51 .

[0048] Please refer to Figure 5 The top force back 4 is a welded steel plate box.

[0049] Please refer to Figure 6 , the hydraulic cylinder 2 is a large jacking force cylinder.

[0050] Accordingly, this embodiment also provides a construction method for an auxiliary device for a shield machine exiting a narrow working shaft. Figure 7 The construction method of the auxiliary device for the shield machine exiting a narrow working shaft described in this embodiment is described in detail.

[0051] First, execute step S1, fully weld the triangular force frames 1 of at least two auxiliary units 100 on the lower part of the side wall of the shield machine 6, and at the same time, weld the top force back 4 in each auxiliary unit 100 to the wall of the shield working shaft directly behind the corresponding triangular force frame 1.

[0052] Specifically, by fully welding the triangular force frame 1 on the lower part of the side wall of the shield machine 6, the triangular force frame 1 is firmly connected to the shield machine 6, wherein each triangular force frame 1 includes: a first steel section 11 and a second steel section 12 fixed to one end of the first steel section 11, the first steel section 11, the second steel section 12 and the shield machine 6 together form a right triangle, and the shield machine 6 and the second steel section 12 are the two right angles of the right triangle. In addition, the triangular force frame 1 is welded and fixed to the top force back 4 on the working shaft wall by planting reinforcement to form a stable support point.

[0053] Next, execute step S2, place the cylinder guide support rod 3 in each auxiliary unit 100 on the ground behind the triangular force frame 1, and lie the hydraulic cylinder 2 on the cylinder guide support rod 3; the top end of the hydraulic cylinder 2 faces the triangular force frame 1, and the base of the hydraulic cylinder 2 rests on the top force back 4; specifically, the cylinder guide support rod 3 serves as a guide channel for the hydraulic cylinder 2 when pushing, so as to avoid the hydraulic cylinder 2 from tilting in direction during the pushing process and losing part of the pushing force; the top end of the hydraulic cylinder 2 faces the second steel section 12 of the triangular force frame 1, that is, the second steel section 12 is subsequently used as a bearing surface for bearing the pushing force of the hydraulic cylinder 2, and the second steel section 12 is perpendicular to the hydraulic cylinder 2, which can not only improve the stability and load-bearing capacity of the hydraulic cylinder 2, but also facilitate operation, thereby ensuring safety and efficiency during use.

[0054] Next, step S3 is executed to start the hydraulic cylinder 2, which pushes the triangular force frame 1 and the shield machine 6 fixed thereto in front of it to move forward.

[0055] Next, step S4 is executed to retract the hydraulic cylinder 2 and install an intermediate support 5 between the hydraulic cylinder 2 and the jacking back 4 to extend the support distance between the rear of the triangular force frame 1 and the front of the jacking back 4 .

[0056] Next, step S5 is executed, and steps S3 and S4 are repeatedly executed until the shield machine 6 is pushed to a predetermined position.

[0057] Here, the processes of S3 and S4 are repeatedly performed, that is, the number of intermediate supports 5 installed between the hydraulic cylinder 2 and the jacking back 4 is increased (two adjacent intermediate supports 5 will be spliced ​​along their axial direction) to gradually increase the support distance between the rear of the triangular force frame 1 and the front of the jacking back 4, gradually extend the overall length of the auxiliary unit 100, and gradually push the shield machine to a predetermined position for the shield machine to exit the hole. The process from quantitative change to qualitative change (from one intermediate support 5 to multiple intermediate supports 5) solves the problem of difficulty in flexible operation of the shield machine when exiting the hole in a narrow working shaft due to limited space.

[0058] Next, step S6 is executed to remove all the triangular force-bearing frames 1 fully welded at the lower part of the side wall of the shield machine 6 so that the shield machine 6 can exit the tunnel normally later.

[0059] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0060] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0061] In summary, in the auxiliary device and construction method for the shield machine exiting a narrow working shaft provided by the present invention, the auxiliary device for the shield machine exiting a narrow working shaft includes: at least two auxiliary units, each of which includes: a triangular force frame, a hydraulic cylinder, a cylinder guide support rod, a jacking back and at least one intermediate support, the triangular force frame is fixed on the side wall of the shield machine, the jacking back is fixed on the wall of the shield working shaft, the hydraulic cylinder lies on the cylinder guide support rod and is located between the rear of the triangular force frame and the front of the jacking back; at least one intermediate support can be selectively placed between the base of the hydraulic cylinder and the front of the jacking back to extend the support distance between the rear of the triangular force frame and the front of the jacking back. By structurally designing the auxiliary device, based on the method of increasing the number of intermediate supports, the overall length of the auxiliary unit is gradually extended, and the shield machine is gradually pushed to a predetermined position, which is convenient for the shield machine to exit the hole.

[0062] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. An auxiliary device for shield machine exiting a narrow working shaft, characterized in that: include: At least two auxiliary units (100), each auxiliary unit (100) comprises: a triangular force frame (1), a hydraulic cylinder (2), a cylinder guide support rod (3), a jacking back (4) and at least one intermediate support (5), the triangular force frame (1) is fixed on the side wall of the shield machine (6), the jacking back (4) is fixed on the wall of the shield working shaft, the hydraulic cylinder (2) lies on the cylinder guide support rod (3) and is located between the rear of the triangular force frame (1) and the front of the jacking back (4); at least one intermediate support (5) can be selectively placed between the base of the hydraulic cylinder (2) and the front of the jacking back (4) to extend the support distance between the rear of the triangular force frame (1) and the front of the jacking back (4).

2. The auxiliary device for shield machine exiting a narrow working shaft as claimed in claim 1, characterized in that: Each triangular force-bearing frame (1) comprises: a first steel section (11) and a second steel section (12) fixed to one end of the first steel section (11); the first steel section (11), the second steel section (12) and the shield machine (6) together form a right-angled triangle; the shield machine (6) and the second steel section (12) are two right-angled sides of the right-angled triangle.

3. The auxiliary device for the shield machine exiting a narrow working shaft as claimed in claim 2, characterized in that: The angle between the first steel section (11) and the second steel section (12) is in the range of 60° to 80°.

4. The auxiliary device for shield machine exiting a narrow working shaft according to any one of claims 1 to 3, characterized in that: The oil cylinder guide support rod (3) is an I-beam and serves as a guide channel when the hydraulic oil cylinder (2) is pushed.

5. The auxiliary device for shield machine exiting a narrow working shaft according to any one of claims 1 to 3, characterized in that: Each of the intermediate supports (5) comprises a steel pipe (51) and rectangular steel plates (52) welded and fixed to both ends of the steel pipe (51).

6. The auxiliary device for shield machine exiting a narrow working shaft according to any one of claims 1 to 3, characterized in that: The jacking back (4) is a welded steel plate box.

7. The auxiliary device for shield machine exiting a narrow working shaft according to any one of claims 1 to 3, characterized in that: The hydraulic cylinder (2) is a high-force cylinder.

8. The auxiliary device for shield machine exiting a narrow working shaft according to any one of claims 1 to 3, characterized in that: There are two auxiliary units (100), which are symmetrically fully welded to the lower part of the side wall of the shield machine (6).

9. A construction method for an auxiliary device for a shield machine exiting a narrow working shaft according to any one of claims 1 to 8, characterized in that: include: S1. The lower part of the side wall of the shield machine (6) is fully welded with the triangular force frames (1) of at least two auxiliary units (100), and at the same time, the top force back (4) in each auxiliary unit (100) is welded and fixed to the wall of the shield working shaft directly behind the corresponding triangular force frame (1); S2. Place the cylinder guide support rod (3) in each auxiliary unit on the ground behind the triangular force frame (1), and place the hydraulic cylinder (2) on the cylinder guide support rod (3); the top end of the hydraulic cylinder (2) faces the triangular force frame (1), and the base of the hydraulic cylinder (2) rests on the top force back (4); S3, starting the hydraulic cylinder (2), so that the hydraulic cylinder (2) pushes the triangular force frame (1) located directly in front of it and the shield machine (6) fixed thereto to move forward; S4, retract the hydraulic cylinder (2), and install an intermediate support (5) between the hydraulic cylinder (2) and the jacking back (4) to extend the support distance between the rear of the triangular force frame (1) and the front of the jacking back (4); S5, repeatedly executing S3 and S4 until the shield machine (6) is pushed to a predetermined position; S6. All the triangular force-bearing frames (1) fully welded at the lower part of the side wall of the shield machine (6) are removed so that the shield machine (6) can exit the tunnel normally later.

Images