Auxiliary device for tool changing of shield tunneling machine

Abstract

The utility model provides an auxiliary device for changing a cutter of a shield tunneling machine, which comprises a protective cylinder device, an air supply device and a downcast tube well, the protective cylinder device is arranged in front of the shield tunneling machine and is 1.5 m away from a shield head of the shield tunneling machine, and the bottom of the protective cylinder device is positioned on a bearing stratum and is higher than an underground water level, so that the stability and the reliability of the protective cylinder device are ensured; a safe and reliable operation space is provided for tool changing operation; the air supply device comprises an air supply pipeline and an air feeder, the air feeder is arranged on the ground, one end of the air supply pipeline is connected with the air feeder, the other end of the air supply pipeline extends into the protective cylinder device and is used for feeding fresh air into the working space, the air quality in the working space is effectively improved, and a safe and healthy working environment is provided for operators; and the efficiency and the quality of tool changing operation are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shield machine technical field especially is related to a kind of auxiliary device for shield machine tool changing. BACKGROUND

[0002] City subway tunnel is often constructed by shield method, and corresponding shield cutter is selected according to soil quality. In most cases, the shield machine is constructed in soil stratum, and the same cutter can complete the construction of an interval under normal circumstances, but the cutter may be severely worn when cutting piles, and the construction cannot continue, so the cutter needs to be replaced.

[0003] At present, common tool changing technologies include self-stable stratum-normal pressure tool changing technology, which generally refers to the technology that the stratum stability is good at the tool changing position of the shield machine, no stratum reinforcement is needed, and the technician directly enters the front of the cutterhead to replace the cutter. However, the stratum at most shield tool changing positions is not stable enough, and some reinforcement treatment of the soil around the excavation face is needed before tool changing.

[0004] The tool changing technology also includes pressure tool changing technology, which replaces the mud pressure or soil pressure in the pressure tank with the pressure of compressed gas. According to the principle of gas pressure construction, the excavation face is supported by gas pressure, and the technician replaces the cutter in the gas pressure environment. However, due to the adverse effects of the construction environment, accidents such as collapse of the excavation face and underground water breakthrough often occur, which may cause personal safety accidents and even the entire tunnel to be scrapped.

[0005] Furthermore, application No. 202211590607.0 discloses a steel structure shield tool changing space structure and a construction method. Although a steel structure shield tool changing space structure is provided, there are still the following technical problems: lack of air supply device, air quality problem during tool changing operation, affecting the safety and health of the operator, and safety hazard. In addition, the horizontal steel box is used as the tool changing space, which not only complicates the installation process, but also has low space utilization.

[0006] Therefore, the utility model is proposed. UTILITY MODEL CONTENT

[0007] The utility model aims to provide an auxiliary device for shield tool changing to solve the technical problem of lack of air supply device, air quality problem during tool changing operation, affecting the safety and health of the operator, and safety hazard in the prior art. The preferred technical solution in the utility model provides many technical effects, which are described in detail below.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0009] The utility model provides a kind of auxiliary device for tool changing of shield machine, including casing device, air supply device and precipitation pipe well, the casing device is arranged in front of shield machine, and distance shield head of shield machine 1.5m, for providing operation space for tool changing operation, and the bottom of the casing device is located on force layer, and higher than underground water level;The air supply device includes air supply pipeline and air blower, the air blower is arranged on ground, one end of the air supply pipeline is connected with the air blower, and the other end extends into the casing device, for sending fresh air into operation space;The precipitation pipe well is dug in the position of distance the casing device 5m, the precipitation pipe well is dug in the position of distance the casing device 5m, and its depth is lower than the bottom of the casing device, for reducing underground water level to below the height of the intended work.

[0010] Preferably, the casing device is formed by welding a plurality of steel casings from top to bottom.

[0011] Preferably, it further includes a tool changing operation structure, an installation opening adapted to the tool changing operation structure is formed on the lowermost steel casing, the tool changing operation structure is a hollow semicylindrical structure, an openable operation window is provided on the arc surface thereof, and the tool changing operation structure is rotatably connected to the casing device through a connecting frame; a transparent window is provided on the operation window.

[0012] Preferably, it further includes a driving device, a rotating shaft is provided on the tool changing operation structure, the rotating shaft is located at the center of the tool changing operation structure, penetrates the tool changing operation structure along the height direction, and is rotatably connected to the connecting frame; the driving device is provided on the connecting frame and is in transmission connection with the rotating shaft.

[0013] Preferably, the chord length of the operation window is 50 cm, and the height is 170 cm.

[0014] Preferably, the air supply pipeline is connected to the inner wall surface of the casing device through a limiting piece, so that the air outlet end of the air supply pipeline can extend into the hollow cavity of the tool changing operation structure.

[0015] Preferably, the limiting pieces are sequentially arranged on the inner wall surface of the casing device along the axial direction of the casing device.

[0016] Preferably, a soft rope ladder is provided on the inner wall surface of the casing device, and a protective net is arranged around the outside of the soft rope ladder.

[0017] The preferred technical solution of the utility model can at least produce the following technical effects:

[0018] The utility model effectively avoids the lack of air supply device in the prior art, the air quality problem exists in the tool changing operation process, which affects the safety and health of the operator, and there is a technical problem of safety hazard.

[0019] The utility model provides a kind of auxiliary device for tool changing of shield machine, including casing device, air supply device and precipitation pipe well, casing device is set in the front of shield machine, and the distance shield head of shield machine is 1.5m, for providing operation space for tool changing operation, and the bottom of casing device is located on bearing stratum, and higher than underground water level;Air supply device includes air supply pipeline and air blower, air blower is set on ground, air supply pipeline one end is connected with air blower, and the other end extends to casing device, for sending fresh air into operation space;Precipitation pipe well is set at the position of the distance casing device 5m, precipitation pipe well is set at the position of the distance casing device 5m, and its depth is lower than the bottom of casing device, for reducing underground water level to the below of intended working height.

[0020] The utility model discloses casing device is set in the front of shield machine and the distance shield head of shield machine is 1.5m, and its bottom is on bearing stratum and higher than underground water level, guarantee the stability and reliability of casing device, provide safe, reliable operation space for tool changing operation.And excavate precipitation pipe well at the position of the distance casing device 5m, reduce underground water level to the below of intended working height, so that the surrounding environment of casing device maintains dry and stable, further guarantee the stability and reliability of casing device, provide safe, reliable operation space for tool changing operation.Moreover, air supply device constantly sends fresh air into operation space, effectively improves the air quality in operation space, provides safe, healthy working environment for operator, improves the efficiency and quality of tool changing operation.In addition, air blower is set on ground, and it is convenient to install, debug and maintain. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, below will to the drawing needed to use in the embodiment or prior art description simple introduction, obviously, the drawing in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0022] Figure 1 It is the structure schematic drawing of the auxiliary device for tool changing of shield machine provided by the utility model;

[0023] Figure 2 It is the plane view of the auxiliary device for tool changing of shield machine provided by the utility model without installing tool changing operation structure;

[0024] Figure 3 It is the structure schematic drawing of the tool changing operation structure of the auxiliary device for tool changing of shield machine provided by the utility model;

[0025] Figure 4It is the utility model provides a kind of installation replacement knife operation structure's plan view of auxiliary device for replacing sword of shield machine.

[0026] In the figure:

[0027] 1, casing device;102, installation opening;2, air supply pipeline;3, air supply machine;4, limiting piece;5, limiting opening;6, replacement knife operation structure;601, operation window;602, transparent window;603, rotating shaft;7, driving device;8, shaft;9, radial connecting pipe;10, precipitation pipe well;11, soft rope ladder;12, protective net;13, shield machine. DETAILED DESCRIPTION

[0028] To make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of the utility model.

[0029] As Figures 1-4 Indicated, the utility model provides a kind of auxiliary device for replacing sword of shield machine 13, including casing device 1, air supply device and precipitation pipe well 10, casing device 1 is set in the front of shield machine 13, and the distance shield head 1.5m of shield machine 13, for providing work space for replacement knife operation, and the bottom of casing device 1 is located on force layer, and higher than underground water level;Air supply machine 3 includes air supply pipeline 2 and air supply machine 3, air supply machine 3 is set on ground, and one end of air supply pipeline 2 is connected with air supply machine 3, and the other end extends to casing device 1, for sending fresh air into work space;Precipitation pipe well 10 is set at the position of distance casing device 15m, and precipitation pipe well 10 is set at the position of distance casing device 15m, and its depth is lower than the bottom of casing device 1, for reducing underground water level to the work height below.

[0030] The casing device 1 of the utility model is set in the front of shield machine 13 and the distance shield head 1.5m of shield machine 13, and its bottom is on force layer and higher than underground water level, guarantees the stability and reliability of casing device 1, provides safe, reliable work space for replacement knife operation. And excavate precipitation pipe well 10 at the position of distance casing device 15m, reduce underground water level to the work height below, so that the surrounding environment of casing device 1 maintains dry and stable, further guarantee the stability and reliability of casing device 1, provide safe, reliable work space for replacement knife operation.

[0031] The utility model effectively avoids the lack of the existing tool changing auxiliary device air supply device, in the tool changing operation process, there is the problem of air quality, influence operator's safety and health, there is the problem of hidden danger. The utility model discloses the air supply device constantly sends fresh air into the operation space, effectively improves the air quality in the operation space, provides safe, healthy working environment for operator, improves the efficiency and quality of tool changing operation. In addition, the air blower 3 is arranged on the ground, and convenient to install, debug and maintain.

[0032] As an optional implementation, the casing device 1 is formed by welding a plurality of steel casings from top to bottom.

[0033] Further, the height of each steel casing is 3m, the inner diameter is 2m, and the wall thickness is 0.03m.

[0034] In this way, the specifications and the number of the steel casings can be flexibly adjusted according to actual use requirements for assembly, while the overall strength and stability of the casing device 1 are ensured.

[0035] As an optional implementation, the tool changing operation structure 6 is arranged on the lowermost steel casing, and an installation opening 102 adapted to the tool changing operation structure 6 is arranged on the lowermost steel casing. The tool changing operation structure 6 is a hollow semicylindrical structure, and an openable operation window 601 is arranged on the arc surface of the tool changing operation structure 6. The tool changing operation structure 6 is rotatably connected to the casing device 1 through a connecting frame. A transparent window 602 is arranged on the operation window 601.

[0036] Further, a working opening is arranged on the arc surface of the tool changing operation structure 6, and the operation window 601 is designed in a push-pull manner, so that the working opening can be closed or opened as required. The specific push-pull connection structure of the operation window 601 and the tool changing operation structure 6 is known in the art, and will not be described here.

[0037] The height of the installation opening 102 on the lowermost steel casing is 1.81m, and the width is 1.01m. The height of the tool changing operation structure 6 is 1.8m, the diameter is 1m, the thickness is 0.03m, the chord length of the working opening is 0.5m, and the height is 1.7m.

[0038] When the arc surface of the tool changing operation structure 6 is completely pressed into the soil, that is, the operation window 601 is directly opposite the cutter head, the distance between the tool changing operation structure 6 and the cutter head is 0.13m-0.15m.

[0039] Compared with the horizontal steel box used as the tool changing operation structure 6 in the prior art, the stress is prone to deformation, the structure stability is poor, and in the case that the operation space of the shield machine 13 is limited, the space occupation is large and the operation is inconvenient. The hollow semicylindrical structure tool changing operation structure 6 has better stability in structure, reduces the space occupation, provides a more flexible working environment for the operator, and reduces the operation difficulty. Moreover, the operator can clearly observe the surrounding environment through the transparent window 602, and after the operation window 601 is opened, the tool can be more conveniently replaced and maintained through the working opening.

[0040] As an optional implementation, the tool changing operation structure 6 is provided with a rotating shaft 603, the rotating shaft 603 is located at the center position of the tool changing operation structure 6, penetrates the tool changing operation structure 6 along the height direction, and is rotationally connected with the connecting frame; and the driving device 7 is arranged on the connecting frame and is in transmission connection with the rotating shaft 603.

[0041] Further, the connecting frame includes a shaft rod 8 located at the center position of the steel casing and a radial connecting pipe 9 connected with the shaft rod 8 perpendicularly. The number of the radial connecting pipes 9 is two, and each is rotationally connected with the two ends of the rotating shaft 603 through a bearing, for supporting the rotating shaft 603.

[0042] The driving device 7 includes a hydraulic driving device 7 in the prior art, which is installed on the radial connecting pipe 9 and is in transmission connection with the rotating shaft 603, for driving the rotating shaft 603 to rotate.

[0043] When the tool changing operation is needed, the hydraulic driving device 7 is started to drive the rotating shaft 603 to rotate, and drive the tool changing operation structure 6 to rotate with the rotating shaft 603 as the center, so that the circular arc surface is rotated from the inside of the steel casing to the outside of the steel casing through the installation opening 102, so that the operation window 601 is opposite to the cutter head of the shield machine 13, and the operator can conveniently replace and maintain the tool. After the operation is completed, the hydraulic driving device 7 is reversely driven to return the tool changing operation structure 6 to the inside of the casing device 1.

[0044] As an optional implementation, the air supply pipeline 2 is connected with the inner wall surface of the casing device 1 through the limiting piece 4, so that the air outlet end of the air supply pipeline 2 can extend into the hollow cavity of the tool changing operation structure 6.

[0045] In this way, the air supply pipeline 2 can extend along the axial direction of the casing device 1, so that the air supply pipeline 2 can conveniently extend into the hollow cavity of the tool changing operation structure 6, and the ventilation effect is good.

[0046] As an optional implementation, the limiting pieces 4 are sequentially arranged on the inner wall surface of the casing device 1 along the axial direction of the casing device 1.

[0047] Further, the limiting piece 4 is provided with a limiting opening 5, which can allow the air supply pipeline 2 to enter and limit the air supply pipeline 2 after entering, thereby improving the connection stability and reliability of the air supply pipeline 2 and the casing device 1.

[0048] As an optional embodiment, the soft rope ladder 11 is arranged on the inner wall surface of the casing device 1, and the outer part of the soft rope ladder 11 is arranged with the protective net 12.

[0049] The soft rope ladder 11 is used for facilitating the operation personnel to go up and down the working space.

[0050] The protective net 12 is used for providing additional safety guarantee for the operation personnel and preventing the operation personnel from falling accidentally during the going up and down process.

[0051] The working process of the utility model is as follows:

[0052] Step 1: determining the working position, collecting the coordinates and height of the shield machine 13, determining the position of the casing device 1 and performing construction lofting;

[0053] Step 2: dewatering, performing the excavation of the dewatering pipe well 10 at a position 5m away from the determined casing device 1 and dewatering to below the determined working height;

[0054] Step 3: burying the steel casing, burying the steel casing into the ground by using the static force pile press machine, excavating the soil body, and adding the soft rope ladder 11 and the protective net 12 on the inner wall surface of the steel casing;

[0055] Step 4: adding the air supply device, installing the air blower 3 on the ground, placing the air supply pipeline 2 into the limiting piece 4, and starting the air supply work;

[0056] Step 5: installing the cutter replacing operation structure 6, burying the shaft 8 at the center of the steel casing, welding the radial connecting pipe 9 on the shaft 8, installing the rotating shaft 603 of the cutter replacing operation structure 6 on the bearing of the radial connecting pipe 9, and then installing the hydraulic driving device 7; starting the hydraulic driving device 7 to press the cutter replacing operation structure 6 into the soil body, and after the circular arc surface of the cutter replacing operation structure 6 is completely pressed into the soil body, excavating.

[0057] Step 6: replacing the cutter of the shield, opening the operation window 601 of the cutter replacing operation structure 6, replacing the cutters one by one, and after the replacement is completed, rotating the cutter head of the shield machine 13 to replace the cutters at the remaining positions;

[0058] Step 7: disassembling according to the reverse steps of the installation, and pulling out the steel casing by using the full-rotation casing machine;

[0059] Step 8: backfilling the excavated part, and the water content of the backfilling soil is required to be 19%-23%, and the soil is required to be layered and tamped, and the compaction coefficient is required to be 93%-95%.

[0060] It can be understood that the same or similar parts in the above embodiments can be mutually referenced, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0061] In the description of the present application, it should be pointed out that, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0062] In the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0063] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "one example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A shield machine tool changing auxiliary device, characterized in that, The application relates to a shield device, a blowing device and a dewatering pipe well, wherein the shield device is arranged in front of a shield machine and at a distance of 1.5 m from the shield head of the shield machine, and is used for providing a working space for a tool changing operation, and the bottom of the shield device is located on a bearing layer and is higher than the underground water level; the blowing device comprises a blowing pipeline and a blowing fan, the blowing fan is arranged on the ground, one end of the blowing pipeline is connected with the blowing fan, and the other end of the blowing pipeline extends into the shield device and is used for sending fresh air into the working space; the dewatering pipe well is arranged at a position 5 m away from the shield device and has a depth lower than the bottom of the shield device, and is used for lowering the underground water level to a predetermined working height.

2. The auxiliary device for changing a tool of a shield tunneling machine according to claim 1, characterized in that, The shield device is formed by welding a plurality of steel casings from top to bottom.

3. The auxiliary device for changing a tool of a tunneling machine according to claim 2, characterized in that, The tool changing operation structure is arranged on the lowermost steel casing and has a mounting opening matched with the tool changing operation structure, the tool changing operation structure is a hollow semicylindrical structure, an openable operation window is arranged on the arc surface of the tool changing operation structure, and the tool changing operation structure is rotatably connected with the shield device through a connecting frame; and a transparent window is arranged on the operation window.

4. The auxiliary device for changing a tool of a tunnel boring machine according to claim 3, characterized in that, A driving device is arranged on the connecting frame and is in transmission connection with the rotating shaft.

5. The auxiliary device for changing a tool of a tunnel boring machine according to claim 4, characterized in that, The chord length of the operation window is 50 cm, and the height is 170 cm.

6. The auxiliary device for changing a tool of a shield tunneling machine according to claim 3, characterized in that, The blowing pipeline is connected with the inner wall surface of the shield device through a limiting piece, so that the air outlet end of the blowing pipeline can extend into the hollow cavity of the tool changing operation structure.

7. The auxiliary device for changing a tool of a shield tunneling machine according to claim 6, characterized in that, The limiting pieces are arranged on the inner wall surface of the shield device in sequence along the axial direction of the shield device.

8. The auxiliary device for changing a tool of a shield tunneling machine according to claim 1, characterized in that, A soft rope ladder is arranged on the inner wall surface of the shield device, and a protective net is arranged around the outer portion of the soft rope ladder.

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