CN219119962U - Air pipe extension layout device based on shield box culvert ventilation - Google Patents

Abstract

The application discloses tuber pipe extension layout device based on shield box culvert ventilation realizes treating the deposit of extension tuber pipe through reducing section of thick bamboo post extension to and through the automobile body and the extension ferrule control that can brake treat the release length of extension tuber pipe, solve among the prior art artifical drag the tuber pipe and lead to damage and tuber pipe extension length and box culvert concatenation construction progress unmatched problem. The flexible air duct comprises a vehicle body, travelling wheels fixedly arranged at the bottom of the vehicle body, a diameter-variable cylinder column fixedly arranged at the top of the vehicle body and with the axis parallel to the advancing direction of the vehicle body, and a hoop which is clamped outside the diameter-variable cylinder column and used for extending a flexible air duct through a fixing belt. The device has the advantages of simple structure, convenient use and the like.

Description

Air pipe extension layout device based on shield box culvert ventilation

Technical Field

The application relates to the technical field of shield tunnel construction, in particular to an air pipe extension layout device based on shield box culvert ventilation.

Background

The construction length of the urban subway tunnel is generally longer and the tunnel is constructed in a relatively airtight underground environment, so that the natural ventilation effect of air in the tunnel is extremely poor, the quality of the air environment is also drastically reduced along with the continuous excavation of the tunnel, and toxic gas generated in construction can not be removed in time under severe conditions, thereby affecting the physical health of constructors and inducing serious construction safety accidents.

Therefore, a ventilation pipeline is required to assist in ventilation in the tunnel, and the construction air environment is improved. In the construction process of the large-diameter shield tunnel, the inventor knows that the hollow middle box culvert hole space arranged at the arc bottom of the tunnel is generally utilized, the air pipe is manually laid to be communicated with the outside for ventilation, and the air pipe is fixedly extended section by section along with continuous advancing excavation of a shield machine, wherein a flexible air pipe is generally adopted for facilitating installation and cost consideration.

However, in the process of implementing the technical solution in the embodiment of the present application, the present inventors have found that at least the following technical problems exist in the above technology:

1. because the inner space of the box culvert is narrow, when the extension operation of the air pipe is carried out in the box culvert, the soft telescopic air pipe is required to be dragged by manpower, and the air leakage caused by the damage of the air pipe are easy to occur;

2. the splicing and installing of each section of box culvert need a certain time, but the scalability of the air pipe enables the extension section of the air pipe to stretch under the action of wind power in the pipe, namely the extension length can only be greatly increased, so that the length of the extension section can not be matched with the box culvert in paving: the length of the air pipe extending out of the box culvert is longer due to the fact that the air pipe is extended too early, and the splicing installation of the subsequent box culvert is affected; too late extension of the air pipe can lead to the tail air outlet of the air pipe to be positioned in the depth of the paved box culvert, thereby affecting ventilation quality.

The information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is well known to a person skilled in the art.

Disclosure of Invention

In view of at least one of the above technical problems, the present disclosure provides an air duct extension layout device based on shield box culvert ventilation, which realizes storage of an air duct to be extended through a variable diameter cylinder column extension part, and controls a release length of the air duct to be extended through a vehicle body capable of braking and an extension part hoop, so as to solve the problems of damage caused by manual dragging of the air duct and unmatched air duct extension length and box culvert splicing construction progress in the prior art.

According to one aspect of the disclosure, an air duct extension layout device based on ventilation of a shield box culvert is provided, and the air duct extension layout device comprises a vehicle body, travelling wheels fixedly arranged at the bottom of the vehicle body, a variable-diameter cylinder column fixedly arranged at the top of the vehicle body and with an axis parallel to the advancing direction of the vehicle body, and a hoop clamped outside the variable-diameter cylinder column and used for extending a soft air duct with a fixed belt;

the diameter-variable cylinder column comprises an air outlet part, a fixing part and an extension part, wherein the air outlet part is used for being relatively fixed with the vehicle body, the fixing part is used for sleeving and fixing a soft air pipe to be extended, and the extension part is used for sleeving and storing the soft air pipe to be extended, wherein the diameter of the air outlet part is gradually reduced, and the fixing part is used for sleeving and fixing the soft air pipe to be extended, and the extension part is sequentially and correspondingly connected.

In some embodiments of the present disclosure, the road wheels are road wheels with brakes.

In some embodiments of the disclosure, an arc-shaped fixing piece matched with the outer edge contour of the air outlet part of the variable-diameter cylinder column is arranged at the position of the top of the vehicle body corresponding to the air outlet part of the variable-diameter cylinder column.

In some embodiments of the present disclosure, the diameter of the outer edge of the fixing part of the reducing cylinder is matched with the diameter of the air pipe to be extended.

In some embodiments of the disclosure, the outer edge diameter of the extension part of the reducing cylinder is matched with the minimum diameter of the air pipe to be extended in the overlapped state, and the air pipe to be extended can be sleeved on the extension part of the reducing cylinder.

In some embodiments of the disclosure, an arc-shaped supporting piece matched with the air pipe to be extended is arranged at the position of the top of the vehicle body corresponding to the end side of the extension part of the diameter-variable cylinder column.

In some embodiments of the present disclosure, the ferrule includes a fixing portion ferrule for locating outside the reducing cylinder post fixing portion, an extension portion ferrule for locating on an end side of the reducing cylinder post extension portion.

One or more technical solutions provided in the embodiments of the present application at least have any one of the following technical effects or advantages:

1. the variable-diameter cylinder column comprising the air outlet part and the extension part is adopted, so that the opening of the ventilation port can be ensured through the air outlet part of the variable-diameter cylinder column; the extension part can realize the reliable storage of the laminated soft air pipe to be extended, and the movable vehicle body ensures the position movement of the air pipe to be extended and simultaneously avoids scratch and damage.

2. Because the diameter-variable cylinder column is provided with the fixing part matched with the diameter of the air pipe to be extended and the fixing part hoops used for clamping the outside of the fixing part, the fixing of the end part of the air pipe to be extended can be realized, and the air pipe is prevented from being separated from the diameter-variable cylinder column.

3. Because the extension part hoops are clamped outside the extension parts of the variable-diameter cylinder columns, the air pipes to be extended can be further fixed outside the variable-diameter cylinder columns through the hoops, and the release extension length of the air pipes to be extended from the extension parts of the variable-diameter cylinder columns can be controlled through fastening, so that the release length of the air pipes to be extended is matched with the splicing length of the box culvert.

4. Due to the adoption of the travelling wheels capable of braking, when the extension part hoops are loosened to extend the air duct, the vehicle body can be relatively fixed, and the situation that the air duct releases more and the construction length of the box culvert is not matched due to the fact that the vehicle body advances under the action of wind power in the air duct is avoided.

Drawings

FIG. 1 is a schematic diagram of a device for extending a tube in an embodiment of the present application.

Fig. 2 is a schematic structural view of a variable diameter cylinder according to an embodiment of the present application.

Fig. 3 is a schematic structural view of a fixing portion ferrule according to an embodiment of the present application.

FIG. 4 is a schematic diagram of a device for deploying a tube extension in accordance with one embodiment of the present application.

In the above figures, 1 is a vehicle body, 2 is a travelling wheel, 3 is a variable-diameter cylinder, 30 is an air outlet part, 31 is a fixed part, 32 is an extension part, 4 is an arc-shaped fixed part, 5 is an arc-shaped supporting part, 6 is a fixed part hoop, 60 is an arc-shaped part, 61 is a shaft pin, 62 is a bolt, 7 is an air pipe to be extended, and 8 is an extension part hoop.

Detailed Description

In the description of the present application, it should be understood that, if the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", "clockwise", "counterclockwise", etc. are referred to, the orientation or positional relationship indicated based on the drawings are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Reference to "first," "second," etc. in this application is for distinguishing between the objects described and not necessarily for any sequential or technical purpose. Reference to "connected" and "coupled" in this application includes both direct and indirect connections (couplings), unless specifically stated otherwise.

The components and the like in the following examples are all commercially available products unless otherwise specified.

For better understanding of the technical solutions of the present application, the following detailed description will refer to the accompanying drawings and specific embodiments.

The embodiment discloses an air pipe extension layout device based on shield box culvert ventilation, referring to fig. 1, the device comprises a vehicle body 1, a travelling wheel 2 fixedly arranged at the bottom of the vehicle body 1, a diameter-variable cylinder column 3 fixedly arranged at the top of the vehicle body 1 and with the axis parallel to the advancing direction of the vehicle body 1, and a hoop clamped outside the diameter-variable cylinder column and used for extending a soft air pipe with a fixed belt.

In this embodiment, the vehicle body 1 is welded into a frame by adopting square steel, as a vehicle body framework, referring to fig. 1, considering that the top of the vehicle body needs to be correspondingly and fixedly connected with the reducing cylinder column 3, the top transverse connection square steel is set to be an arc-shaped fixing piece 4, the inner arc surface profile of the arc-shaped fixing piece 4 is matched with the air outlet part of the reducing cylinder column 3, so that the contact area between the two is increased, stable connection between the cylindrical reducing cylinder column 3 and the vehicle body is realized, in this embodiment, the welding between the reducing cylinder column 3 and the arc-shaped fixing piece 4 is realized, the relative fixation between the reducing cylinder column 3 and the vehicle body is realized, and the construction progress changing position of the reducing cylinder column 3 along with the box culvert splicing installation is realized through the convenient movement of the vehicle body.

Wherein, in order to realize the removal of automobile body, the bottom four corners of automobile body is fixed respectively and is equipped with walking wheel 2, see fig. 1, through the roll of walking wheel 2, makes things convenient for the removal of automobile body. Considering that the reducing cylinder column 3 needs to be connected with the air pipe to be extended, under the action of the wind force in the air pipe, the reducing cylinder column is enabled to be subjected to the action force along the advancing direction of the reducing cylinder column, and then the vehicle body is driven to move forwards, so that the space position of the reducing cylinder column is changed, and the air pipe is enabled to be excessively extended, therefore, in the embodiment, the travelling wheel 2 with the brake is adopted, when the air pipe is not required to be extended when the box culvert is spliced and installed, the travelling wheel 2 is braked, and therefore, when the wind force in the air pipe acts, the vehicle body is relatively stable and cannot be displaced due to the action of the wind force in the air pipe, and the primary control of the extension length of the air pipe is realized.

Because the wind pipe to be extended is moved forward in a manual dragging mode when the wind pipe extends in the prior art, the wind pipe is easy to damage when being dragged on the ground of the box culvert due to sundries in the box culvert and concave-convex surfaces, and the wind pipe after extension leaks air and leaks air, so that the construction quality and the progress are affected. Therefore, in the present embodiment, the variable diameter cylindrical column 3 is provided, and referring to fig. 2, the variable diameter cylindrical column 3 includes the air outlet portion 30, the fixing portion 31, and the extending portion 32, which are gradually reduced in diameter and are correspondingly connected in order. The air outlet portion 30 is used for being correspondingly connected with the vehicle body 1 through arc fixing pieces 4, in this example, referring to fig. 1, two arc fixing pieces 4 are arranged along the length direction of the vehicle body 1, and the two arc fixing pieces 4 are correspondingly welded with two ends of the air outlet portion 30 of the reducing cylinder column respectively, so that the central axis of the reducing cylinder column 3 is parallel to the advancing direction of the vehicle body, and reliable connection between the reducing cylinder column 3 and the vehicle body 1 is realized through the air outlet portion 30. Considering the storage of the soft air pipes in the overlapped state, the cylinder column is set to be of a variable diameter structure, and the storage of the air pipes to be extended is realized through the extension part 32 with smaller diameter, wherein the diameter of the extension part 32 is matched with the minimum diameter of the air pipes to be laid in the overlapped state, so that the overlapped air pipes can be sleeved on the outer edge of the extension part 32 of the variable diameter cylinder column, and the extension part can move forward along with the vehicle body 1, thereby avoiding damage caused by dragging.

In addition, after the extension portion 32 is used for realizing the sleeving and storage of the air pipe to be extended, during the extending operation, along with the advancing of the vehicle body 1, only the air pipe sleeved outside the extension portion is easy to fall off, so that the air pipe to be extended and the extension portion 3 need to be relatively fixed, in the embodiment, the fixing portion 31 is arranged between the air outlet portion 30 and the extension portion 32 of the extension portion 3, the diameter of the fixing portion 31 is between the diameters of the air outlet portion 30 and the extension portion 32, and is matched with the diameter of the air pipe to be extended, one end of the soft air pipe to be extended is sleeved on the outer edge of the fixing portion 31, and the two are attached to each other, so that air leakage and air leakage are avoided. In this embodiment, in order to further fix the air duct to be extended to the outer edge of the variable diameter cylinder fixing portion 31, referring to fig. 3-4, a fixing portion hoop 6 is provided, the fixing portion hoop 6 includes two symmetrically arranged arc-shaped members 60, the inner edge contours of the two arc-shaped members 60 match the outer edge contours of the fixing portion 31, and one end of each arc-shaped member is provided with a hinge portion including a shaft pin 61, so that the two arc-shaped members can rotate relative to the shaft pin 61 of the hinge portion, so as to be clamped outside the fixing portion 31; the other ends of the two arc-shaped pieces 60 are correspondingly provided with bolt holes so as to conveniently penetrate through the bolts 62 to realize the stable clamping of the two arc-shaped pieces on the outer sides of the fixing parts 31. Therefore, the air pipe to be extended is relatively fixed outside the fixing part through the fixing part hoops, the air pipe is prevented from falling off from the reducing cylinder column 3, and air leakage caused by gaps between the reducing cylinder column 3 and the air pipe to be extended is avoided.

Referring to fig. 4, after the air pipe 7 to be extended is sleeved on the outer edge of the extension part 32 of the variable diameter cylinder column and fixed by the hoop 6 of the fixing part, because the length of the extension part 32 is limited, and a gap exists between the cylinder column of the extension part 32 and the air pipe sleeved outside the extension part, after wind power in the air pipe enters the gap, the other end of the air pipe 7 is sealed and fixed by the hoop of the fixing part, so that the air pipe 7 to be extended is easy to shake at the extension part and then to fall off partially after the wind power is blocked and backflow, and therefore, referring to fig. 4, the hoop 8 of the extension part is arranged at the end part of the extension part 32 of the variable diameter cylinder column, and is similar to the hoop in structure, the difference is that the inner edges of two symmetrical arc-shaped pieces are matched with the outer edge of the extension part 32 of the variable diameter cylinder column, the other end of the air pipe 7 to be extended can be fixed by the hoop 8 of the extension part, so that the fixation of the air pipe 7 to be realized, and whether the extension air pipe is released or not can be determined by the elasticity of the hoop 8.

In addition, in the embodiment, an arc-shaped supporting piece 5 matched with the air pipe 7 to be extended is arranged at the end side position of the extension part of the opposite-strain diameter cylinder column 3 at the top of the vehicle body, and the arc-shaped supporting piece can realize further reinforcement of the vehicle body and ensure the stability of the vehicle body; on the other hand, the arc-shaped grooves of the arc-shaped supporting piece 5 can support the air pipe.

In other embodiments, a frame for fixing the two hoops is arranged on one side of the vehicle body, which is located at the hinge part of the fixed part hoops and the extension part hoops, so that the two hoops and the vehicle body can be relatively fixed, and the problem that the hoops are not easy to operate due to shaking when the new air pipe and the extension air pipe are installed to loosen the corresponding hoops is avoided.

When the air pipe extension layout device is used, firstly, an air pipe to be extended is sleeved outside the extension part of the variable-diameter cylinder column, one end of the air pipe with the extension is fixed to the fixed part of the variable-diameter cylinder column through the fixed part hoop, the other side of the air pipe is fixed to the extension part through the extension part hoop, see fig. 4, the section of the air pipe with the extension part is connected with the upper section of the air pipe with the extension part through the zipper at the end part of the air pipe to be extended, the extension part hoop is loosened to be fixedly connected with the box culvert, the fastening of the extension part hoop and the braking of the travelling wheel are loosened, the vehicle body is pushed to move along the paving direction of the box culvert, the travelling wheel is stopped after the extension part is gradually extended from the extension part to reach the designated position along with the advancing of the vehicle body, and the extension part hoop is fastened, and the circulation is implemented in this way.

While certain preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the utility model of the present application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims (7)

1. The wind pipe extension layout device based on shield box culvert ventilation is characterized by comprising a vehicle body, travelling wheels fixedly arranged at the bottom of the vehicle body, a variable-diameter cylinder column fixedly arranged at the top of the vehicle body and with the axis parallel to the advancing direction of the vehicle body, and a hoop clamped outside the variable-diameter cylinder column and used for fixing a soft wind pipe for extension;

the diameter-variable cylinder column comprises an air outlet part, a fixing part and an extension part, wherein the air outlet part is used for being relatively fixed with the vehicle body, the fixing part is used for sleeving and fixing a soft air pipe to be extended, and the extension part is used for sleeving and storing the soft air pipe to be extended, wherein the diameter of the air outlet part is gradually reduced, and the fixing part is used for sleeving and fixing the soft air pipe to be extended, and the extension part is sequentially and correspondingly connected.

2. The shield box culvert ventilation-based air duct extension layout device of claim 1, wherein the travelling wheels are travelling wheels with brakes.

3. The extension layout device for the air pipe based on ventilation of the box culvert of the shield structure according to claim 1, wherein the top of the vehicle body is provided with an arc-shaped fixing piece matched with the outline of the outer edge of the air outlet part of the variable-diameter cylinder column at the position corresponding to the air outlet part of the variable-diameter cylinder column.

4. The extension layout device for the air pipe based on ventilation of the box culvert of the shield machine according to claim 1, wherein the diameter of the outer edge of the fixed part of the diameter-variable cylinder is matched with the diameter of the air pipe to be extended.

5. The device for extending and arranging the air pipe based on ventilation of the box culvert of the shield machine according to claim 1, wherein the diameter of the outer edge of the extension part of the diameter-variable cylinder is matched with the minimum diameter of the air pipe to be extended in a superposed state, and the air pipe to be extended can be sleeved on the extension part of the diameter-variable cylinder.

6. The extension layout device for air pipes based on ventilation of shield box culverts according to claim 1, wherein arc-shaped supporting pieces matched with the air pipes to be extended are arranged at the positions of the top of the vehicle body corresponding to the end sides of the extension parts of the variable-diameter cylinder columns.

7. The device for extending and arranging the air duct based on ventilation of the box culvert of the shield according to claim 1, wherein the hoop comprises a fixed part hoop arranged outside the fixed part of the variable-diameter cylinder and an extending part hoop arranged at the extending part end side of the variable-diameter cylinder.

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