Shield air-pushing air-shaft-passing propelling device

Abstract

The utility model relates to a shield empty pushing air shaft passing propelling device which comprises a plurality of holes formed in a guide table at intervals, fixing blocks symmetrically welded to the two sides of a shield body of a shield tunneling machine, a hydraulic jack and a counter-force providing device, the counter-force providing device comprises a stand column and fins, the fixing end of the hydraulic jack is connected with the stand column inserted into the holes, and the fixing end of the hydraulic jack is connected with the fins. The output end of the hydraulic jack is connected with a fixing block on the side wall of the shield tunneling machine, a cover plate is arranged on the hole, a torsional spring is arranged on one side of the cover plate, the torsional spring is fixed to the edge of a hole opening of the hole, and the cover plate is in a horizontal state under the action of the torsional spring and covers the hole. And the baffle plate is clamped between the upright post and the side wall of the hole. According to the utility model, the propelling stability of the shield tunneling machine in the air shaft is enhanced through the close fit of the upright posts and the holes and the supporting structure of the fins.

Description

Technical Field

[0001] The utility model relates to the technical field of shield construction, in particular to a shield air-pushing through a ventilation shaft propulsion device. Background Art

[0002] Shield machines are increasingly being used in tunnel construction due to their safety, speed, mechanization, and automation. Urban subway construction typically utilizes methods such as open-cut, underground, and shield tunneling. The earth pressure balance shield (EPB) method has gained widespread adoption due to its adaptability, minimal environmental impact, high safety, and high efficiency. When designing long, large sections of subways, appropriate ventilation shafts are required to meet tunnel ventilation, drainage, fire protection, and civil air defense requirements. Shield tunneling requires tunneling through these shafts or stations.

[0003] However, existing shield machines often face many problems when crossing interval ventilation shafts. Traditional shield propulsion methods are easily subject to space limitations at the ventilation shaft, resulting in reduced construction efficiency. Due to the complex environment inside the ventilation shaft and the presence of various pipelines and equipment, shield machines are prone to collisions and damage when crossing. Existing propulsion methods lack effective fixing and reaction force providing devices in the ventilation shaft, resulting in unstable propulsion, affecting construction accuracy and safety. Traditional construction methods make it difficult to ensure the smooth propulsion of the shield machine during ventilation shaft crossing, which can easily cause deformation or even collapse of the ventilation shaft structure, increasing construction risks. Utility Model Content

[0004] In view of the above defects of the existing technical solutions, the main purpose of this utility model is to develop a new type of shield empty push through the air shaft propulsion device, which ensures the smooth propulsion of the shield machine in the air shaft through improved fixing and reaction force providing structure, improves construction efficiency and safety, and avoids deformation of the air shaft structure and construction risks.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A shield tunneling propulsion device for pushing through an air shaft comprises a plurality of holes arranged at intervals on a guide platform, fixed blocks symmetrically welded on both sides of a shield body of a shield machine, a hydraulic jack and a reaction force providing device, wherein the reaction force providing device comprises a column and a rib, the fixed end of the hydraulic jack is connected to the column inserted into the hole, the output end of the hydraulic jack is connected to the fixed block on the side wall of the shield machine, a cover plate is provided on the hole, one side of the cover plate comprises a torsion spring, the torsion spring is fixed to the edge of the hole opening, under the action of the torsion spring, the cover plate is in a horizontal state, covering the hole, when the column is inserted, the cover plate is pressed down, the cover plate is flipped into the hole, and is clamped between the column and the side wall of the hole; there are two ribs, which are arranged on the side opposite to the fixed end of the hydraulic jack, and a long strip rib is also provided between the column and the rib, the rib is arranged along the height direction of the column, and a rib groove is formed between the two ribs, and the rib groove is used to accommodate the cover plate.

[0007] Preferably, the rib is triangular in shape, is wider at the bottom and gradually narrows upwards, and the bottom plane of the rib contacts the guide platform.

[0008] Preferably, the ribs include a plurality of ribs.

[0009] Preferably, an elastic layer is provided on the upper surface of the cover plate.

[0010] Preferably, the cover plate is assembled.

[0011] Preferably, the column is a hollow square column.

[0012] Preferably, reinforcing ribs are provided inside the pillar.

[0013] Preferably, a plurality of sockets are provided at the bottom of the column, and pins are inserted into the sockets to connect several thickening plates. The thickening plates are provided with through holes corresponding to the sockets, and the height of the column can be adjusted by adjusting the number of thickening plates.

[0014] In summary, the beneficial effects of the present invention are as follows: by arranging multiple holes on the guide platform and combining the use of columns and ribs, the problem of low propulsion efficiency of traditional shield machines in the air shaft is effectively solved, and the multi-point support and reaction force providing device ensure the stable propulsion of the shield machine and reduce the construction time; through the cover plate and torsion spring design, the holes are automatically covered when not in use to prevent debris from entering the holes and affecting construction; the close fit between the columns and the holes and the support structure of the ribs further enhance the propulsion stability of the shield machine in the air shaft and avoid safety hazards caused by deformation or collapse of the air shaft structure; in addition, the design of the thickened plate increases the thickness adjustment ability of the bottom of the column, so that the propulsion device can flexibly adapt to the needs of different operating scenarios, further improving the versatility and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0016] Figure 1 The overall structure schematic diagram of the shield empty pushing over the shaft pushing device of the embodiment of the present application is shown in the figure.

[0017] Figure 2 The counterforce providing device and the cover plate cooperation schematic diagram of the embodiment of the present application is shown in the figure.

[0018] Figure 3 The top view of the counterforce providing device of the embodiment of the present application is shown in the figure.

[0019] Figure 4 The front view of the counterforce providing device of the embodiment of the present application is shown in the figure.

[0020] Figure 5 The schematic diagram of the cover plate in the horizontal state of the embodiment of the present application is shown in the figure.

[0021] Figure 6 The column and the thickening plate cooperation schematic diagram of the embodiment of the present application is shown in the figure.

[0022] The figure mark explanation: 1-the shield body; 2-the guide table; 3-the hole; 31-the torsion spring; 32-the cover plate; 4-the fixed block; 5-the hydraulic jack; 6-the counterforce providing device; 61-the column; 62-the rib; 63-the rib plate; 64-the rib plate groove; 65-the reinforcing rib; 66-the bolt; 67-the thickening plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the present application.

[0024] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0025] See also Figure 1-6 , this embodiment provides a shield empty push through the wind shaft propulsion device, which is used to propel the shield machine forward in the wind shaft, including a plurality of holes 3 arranged at intervals on the guide platform 2, fixed blocks 4 symmetrically welded on both sides of the shield body 1 of the shield machine, a hydraulic jack 5 and a reaction force providing device 6, the holes 3 on the guide platform 2 are evenly distributed and used to plug in the columns 61, the fixed blocks 4 on both sides of the shield body 1 are used to connect with the hydraulic jacks 5, the hydraulic jacks 5 are used to provide propulsion force for the shield body 1 to move forward, the reaction force providing device 6 includes a column 61 and a rib 62, the column 61 is plugged into the hole 3, the rib 62 provides additional support and stability for the column 61, the fixed end of the hydraulic jack 5 is connected to the plug The column 61 connected to the hole 3 is connected, and the output end of the hydraulic jack 5 is connected to the fixed block 4 on the side wall of the shield body 1 to realize force transmission. A cover plate 32 is provided on the hole 3, and the cover plate 32 is used to cover the hole 3 to prevent debris from entering. One side of the cover plate 32 includes a torsion spring 31, which is installed at the edge of the hole 3 to provide a rotational force for the cover plate 32. The torsion spring 31 is fixed to the edge of the hole 3. Under the action of the torsion spring 31, the cover plate 32 is in a horizontal state, covering the hole 3. When the column 61 is inserted, the cover plate 32 is pressed down, and the cover plate 32 is flipped into the hole 3 and clamped between the column 61 and the side wall of the hole 3 to ensure the stability of the column.

[0026] A guide rail is installed on the top of the guide platform 2 along the guide platform axis direction. The guide rail is used to guide the movement of the shield body 1. The shield body 1 is pushed onto the guide rail in vain to ensure that the shield body 1 moves smoothly on the guide platform 2. The connection between the shield body 1 of the shield machine and the connecting bridge is disconnected so that the shield body 1 can move independently. Propulsion devices are set on both sides of the shield body 1 on the guide platform 2. The shield body 1 is pushed toward the receiving doorway by the propulsion device to ensure the smooth advancement and precise positioning of the shield machine 1 during the construction process.

[0027] In this embodiment, there are two ribs 62, which are arranged on the side opposite to the fixed end of the hydraulic jack 5. This ensures that the column 61 has sufficient support and stability when the hydraulic jack 5 applies thrust. A long strip of ribs 63 is also provided between the column 61 and the ribs 62. The ribs 63 are arranged along the height direction of the column 61. A rib groove 64 is formed between the two ribs 63. The rib groove 64 is used to accommodate the cover plate 32. In this way, when the column 61 is inserted into the hole 3, the cover plate 32 can smoothly enter the rib groove 64 without affecting the stability and stress of the column 61. The cover plate 32 is fixed in the rib groove 64 and clamped between the column 61 and the side wall of the hole 3. The cover plate 32 is located in the rib groove 64, fixing the column 61. In this way, when the hydraulic jack 5 is working, the column 61 will not shake, ensuring the stability of the system. At the same time, the design of the cover 32 also ensures that the bottom plane of the rib 62 is in close contact with the guide platform 2, providing good support. When the column 61 is taken out, under the action of the restoring force of the torsion spring 31, the cover 32 will cover the hole 3 again to prevent debris from entering the hole 3. Through a simple and effective mechanical structure, the automatic opening and closing function of the hole is provided, keeping the hole clean and protecting the structural integrity of the hole.

[0028] Furthermore, the ribs 62 are triangular in shape and are designed to be wider at the bottom and gradually narrow upwards. This can provide more stable support and ensure that the column 61 will not tilt when subjected to force. The bottom plane of the ribs 62 is in contact with the guide platform 2 to ensure uniform force. The ribs 62 include multiple ribs to provide greater stability. The upper surface of the cover plate 32 is provided with an elastic layer, which helps to reduce friction when the column 61 is inserted, protects the cover plate 32 from damage, and provides a certain buffering effect. The cover plate 32 is assembled, which is convenient for rapid installation and replacement at the construction site, thereby improving construction efficiency. The column 61 is a hollow square column. This design not only reduces the weight of the column 61, but also enhances its compressive strength, making it easier to process and install while providing support. Reinforcing ribs 65 are also provided inside the column 61. The design of the reinforcing ribs 65 improves the overall strength and rigidity of the column 61, so that it will not deform or bend when subjected to the thrust of the hydraulic jack 5.

[0029] In this embodiment, to achieve height adjustability for column 61, multiple sockets are provided at the bottom of column 61. Pins 66 are first inserted into the sockets to securely connect several thickened plates 67. Thickened plates 67 are provided with through-holes corresponding to the positions of pins 66. Once pins 66 are inserted into the sockets, the through-holes on thickened plates 67 are aligned with pins 66 and inserted, securing thickened plates 67 securely to column 61. Pins 66 utilize a locating pin structure, ensuring they remain securely in place after insertion into the sockets and through-holes, preventing them from becoming loose due to equipment vibration. The high precision with which pins 66 fit within the sockets and through-holes ensures a reliable connection between thickened plates 67 and column 61, thereby providing excellent support.

[0030] The thickening plates 67 are designed to be detachable and connected in layers, and each thickening plate 67 has a standard thickness. By adjusting the number of thickening plates 67, the height of the column 61 can be accurately adjusted in stages. Such a design not only facilitates the rapid replacement, installation and adjustment of the thickening plates 67, but also ensures the stability of the entire device. The thickening plates 67 are usually made of high-strength alloy steel or composite materials to withstand the large reaction forces generated during the shield propulsion process and avoid structural deformation due to equipment weight or load impact. The purpose of providing the thickening plates 67 is to achieve height adjustment without changing the overall structure of the column 61 to adapt to the needs of different terrains or operating scenarios, especially when the shield equipment passes through wind shafts of different heights, the support height of the column 61 can be flexibly adjusted to ensure that the hydraulic jack 5 and the guide platform 2 maintain the optimal position and stress state, thereby improving the adaptability and working efficiency of the propulsion device.

[0031] In this embodiment, in order to further improve the working monitoring capability of the shield tunnel propulsion device, a pressure sensor is provided on one side of the cover plate 32. The pressure sensor is installed on the inner side of the cover plate 32. When the column 61 is inserted into the hole 3, the cover plate 32 is flipped into the hole 3 under the action of the torsion spring 31 and is located in the rib groove 64. At this time, the pressure sensor contacts the inner wall of the rib 63 and determines the working status of the hydraulic jack 5 by detecting the pressure changes in real time. When the hydraulic jack 5 is working normally, the cover plate 32 will remain stably clamped between the column 61 and the side wall of the hole 3, so that the pressure value detected by the pressure sensor is maintained within the preset range. If the hydraulic jack 5 has an abnormality, such as the output end fails to fully push or the force applied is insufficient, the pressure value detected by the pressure sensor will deviate from the preset range. The system will issue an alarm based on the data of the pressure sensor to remind the operator to check the working condition of the hydraulic jack 5.

[0032] In summary, the present invention provides a shield tunneling propulsion device, wherein the reaction force providing device 6 is composed of a column 61 and a rib 62, wherein the column 61 is a hollow square column with a reinforcing rib 65, the rib 62 is triangular, and contacts the guide platform 2 at its bottom plane to provide stable support for the column 61, and a cover plate 32 with a torsion spring 31 is provided on the hole 3. The torsion spring 31 keeps the cover plate 32 in a horizontal state to cover the hole 3 when not in use. When the column 61 is inserted, the cover plate 32 will be pressed into the hole 3 and clamped therein. Between the column 61 and the side wall of the hole 3, the cleanliness of the hole 3 and the stability of the column 61 are ensured. Long strip ribs 63 arranged along the height direction of the column 61 are also provided between the ribs 62. A rib groove 64 is formed between the two ribs 63 to accommodate the cover plate 32. Through reasonable structural design and coordinated work between various components, this device solves the space limitation and stability problems of the shield machine when advancing in the wind shaft, improves construction efficiency and safety, effectively solves the shortcomings of the existing technology, and has broad application prospects.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the idea of ​​the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above. For the sake of simplicity, they are not provided in detail. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that it is still possible to modify the technical solutions recorded in the above embodiments, or to make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shield tunneling device for pushing through a ventilation shaft, characterized in that: The invention comprises a plurality of holes (3) arranged at intervals on a guide platform (2), fixed blocks (4) symmetrically welded on both sides of a shield body (1) of a shield machine, a hydraulic jack (5) and a reaction force providing device (6), wherein the reaction force providing device (6) comprises a column (61) and a rib (62), the fixed end of the hydraulic jack (5) is connected to the column (61) plugged into the hole (3), the output end of the hydraulic jack (5) is connected to the fixed block (4) on the side wall of the shield body (1), a cover plate (32) is provided on the hole (3), one side of the cover plate (32) comprises a torsion spring (31), the torsion spring is fixed to the edge of the hole (3), and the torsion spring (31) is connected to the torsion spring (3) Under the action of the hydraulic jack (5), the cover plate (32) is in a horizontal state, covering the hole (3); when the column (61) is inserted, the cover plate (32) is pressed down, and the cover plate (32) is turned over into the hole (3) and clamped between the column (61) and the side wall of the hole (3); there are two ribs (62), which are arranged on the side opposite to the fixed end of the hydraulic jack (5); a long strip rib (63) is also arranged between the column (61) and the rib (62); the rib (63) is arranged along the height direction of the column (61), and a rib groove (64) is formed between the two ribs (63), and the rib groove (64) is used to accommodate the cover plate (32).

2. The shield tunneling propulsion device according to claim 1 is characterized in that: The rib (62) is triangular in shape, is relatively wide at the bottom, and gradually narrows upwards, and the bottom plane of the rib (62) contacts the guide platform (2).

3. The shield tunneling propulsion device according to claim 2 is characterized in that: The ribs (62) include a plurality of ribs.

4. The shield tunneling propulsion device according to claim 1 is characterized in that: An elastic layer is provided on the upper surface of the cover plate (32).

5. The shield tunneling propulsion device according to claim 4 is characterized in that: The cover plate (32) is of assembled type.

6. The shield tunneling propulsion device according to claim 1 is characterized in that: The column (61) is a hollow square column.

7. The shield tunneling propulsion device according to claim 1 is characterized in that: A reinforcing rib (65) is provided inside the column (61).

8. The shield tunneling propulsion device according to claim 7 is characterized in that: The bottom of the column (61) is provided with a plurality of sockets, into which pins (66) are inserted to connect a plurality of thickening plates (67), and the thickening plates (67) are provided with through holes corresponding to the sockets. The height of the column (61) can be adjusted by adjusting the number of thickening plates (67).

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