Shield tunneling machine translation empty pushing jacking device and working method thereof

Abstract

The invention provides an empty pushing jacking device of a shield tunneling machine and a working method of the empty pushing jacking device, and belongs to the technical field of tunnel construction equipment. The device comprises a bearing rack, a supporting leg oil cylinder, a ball, a ball frame and a ground steel plate. The jacking height of the bearing rack is controlled through the supporting leg oil cylinder, balls are installed on the ball frame, and the balls are matched with the ground steel plate raceway, so that stable translation of the shield tunneling machine is achieved. Sliding friction is converted into rolling friction, friction resistance in the propelling process is reduced, and construction efficiency is improved. The device does not depend on laying of traditional steel rails, the translation direction can be flexibly adjusted only by laying steel plates, the device adapts to different construction environments, the construction flexibility and efficiency are remarkably improved, the manpower and material resource cost is reduced, and the stability and bearing capacity of equipment are enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction equipment, and in particular to a shield machine translation air-pushing jacking device and a working method thereof. Background Art

[0002] At present, shield machines often need to perform empty push and translation operations during tunnel construction. The existing empty push and translation process of shield machines mainly adopts the overall jacking and translation of TBM (tunnel boring machine). The main process of this process is: first pre-embed steel plates on the ground and pour concrete. After the concrete is cured, lay rails on it. After the rails are fixedly connected to the steel plates, install the TBM base for translation. After the TBM is pushed onto the base, use a hydraulic jack to push the base so that the base and the TBM can be translated along the rails. When the base reaches the station track position, use a hydraulic jack to push the shield machine onto the station track to complete the entire translation operation.

[0003] This traditional translation process requires a lot of preparation work. In the early stage, a series of complex steps such as pre-embedded rails, concrete pouring and maintenance must be completed, resulting in a long construction preparation time and a large consumption of manpower and material resources. In addition, the traditional translation process requires the use of reaction frames and hydraulic jacks for jacking. This method not only limits the continuous construction of the shield machine, but also has problems such as low process switching efficiency and slow overall progress, which in turn delays the construction period. More importantly, the traditional translation method relies on the laying of rails. Under certain complex construction conditions (such as narrow space or high steering requirements), the laying of rails brings great inconvenience and reduces the flexibility of construction.

[0004] Therefore, the technical problem existing in the prior art is that the traditional shield machine air-pushing and translation process has complicated steps, low efficiency and insufficient flexibility during the construction process, and cannot meet the higher requirements for efficiency and flexibility in modern tunnel engineering. Summary of the invention

[0005] In view of the defects of the prior art, the present invention provides a shield machine translation and empty push jacking device and a working method thereof, which can reduce the preparation work before construction, improve construction efficiency and flexibility, and solve the shortcomings of the prior art.

[0006] In order to achieve the above invention object, the technical solution adopted by the present invention is as follows:

[0007] A shield machine translation and empty push jacking device, comprising: a bearing platform 1, a leg oil cylinder 2, a ball support frame 3, a ball 4, a grooved steel plate 5 and a steel plate bearing platform 6;

[0008] The bearing platform 1 is a steel truss structure, which is connected by short straight rods to form an arc-shaped curved surface structure similar to the shield body of the shield machine, and is used to support and carry the shield machine; a ball support frame 3 is installed at the bottom of the bearing platform 1;

[0009] The outrigger oil cylinders 2 are installed on both sides of the load-bearing platform 1, and are used to support the load-bearing platform 1 during the jacking process. The outrigger oil cylinders 2 are retractable during the jacking process, and can be retracted and out of contact with the ground after the jacking is completed;

[0010] The ball support frame 3 is a thick flat plate structure, and a number of round holes matching the diameter of the balls 4 are evenly distributed on the bottom of the plate. The balls 4 are installed below the plate, and the balls 4 interact with the raceways on the grooved steel plate 5, so that the support frame 1 can roll along the raceways under the action of the balls 4;

[0011] The grooved steel plate 5 is provided with a ball raceway, the width of which is slightly smaller than the diameter of the ball 4, imitating the rolling form of a bearing, and is used to guide the ball support frame 3 to move smoothly.

[0012] A steel plate bearing platform 6 is installed under the grooved steel plate 5. The steel plate bearing platform 6 is in contact with the ground and can adjust its height to ensure the flatness of the grooved steel plate 5 and avoid problems such as jamming and overturning when the bearing platform moves due to factors such as unevenness and roughness of the ground. At the same time, a hook is installed on the steel plate bearing platform 6 to facilitate towing using a traction device such as a traction rope.

[0013] Preferably, four iron plates are evenly distributed on the bottom of the bearing platform 1, and the bearing platform 1 and the ball support frame 3 are connected by bolts to ensure the stability and disassembly of the bearing platform 1.

[0014] Preferably, the outrigger cylinders 2 are controlled by a hydraulic system, and the telescopic action of the outrigger cylinders 2 is utilized to realize the lifting and lowering operation of the entire shield machine.

[0015] Preferably, the grooved steel plates 5 are laid in different directions, and the translation of the shield machine in any direction can be controlled by adjusting the laying direction of the grooved steel plates 5, without relying on tracks for propulsion operations.

[0016] The present invention also discloses a working method of the shield machine translation air-pushing lifting device according to any one of claims 1 to 6, comprising:

[0017] Receiving preparation stage:

[0018] A grooved steel plate 5 with rolling grooves and a steel plate bearing platform 6 are laid on the ground at the receiving end of the shield machine;

[0019] Transport the various components of the shield machine's translational air-pushing lifting device to the receiving end, and complete assembly and splicing;

[0020] Adjust the position of the device so that the ball 4 is correctly installed in the raceway of the grooved steel plate 5 to ensure the fit between the ball 4 and the raceway.

[0021] Start the outrigger cylinder 2 to lift the support frame 1 to the same height as the receiving hole of the shield machine;

[0022] By using the shield machine's own power, the shield machine is slowly moved onto the bearing platform 1;

[0023] After receiving is completed, the outrigger cylinder 2 retracts, and the bearing platform 1 and the shield machine are stably supported on the ball support frame 3.

[0024] Translation phase:

[0025] Start the hydraulic jack on the side of the bearing platform 1, and push the bearing platform 1 through the jack, so that the bearing platform 1 and the shield machine as a whole move along the rolling track of the grooved steel plate 5;

[0026] During the translation process, keep the thrust of the hydraulic jack stable to avoid severe vibration or imbalance;

[0027] According to the moving speed of the shield machine, the grooved steel plates 5 are alternately laid in the forward direction in due time to ensure the continuous translation of the shield machine.

[0028] Lifting stage:

[0029] When the shield machine moves to the predetermined position, the outrigger cylinder 2 is started to lift it again;

[0030] The outrigger oil cylinder 2 extends out and contacts the ground, lifting the bearing platform 1 to a position slightly higher than the specified position, so as to facilitate the laying of the new grooved steel plate 5 and the steel plate bearing platform 6.

[0031] Empty push phase:

[0032] After the lifting is completed, a grooved steel plate 5 and a steel plate bearing platform 6 are laid under the bearing platform 1 at the same height as the platform of the railway station;

[0033] After the bearing platform 1 is lowered onto the grooved steel plate 5, the shield machine and the bearing platform 1 are pulled onto the station platform by a winch or other traction equipment to complete the empty push operation; when it reaches the end of the grooved steel plate 5, the outrigger oil cylinder 2 is lifted up a short distance, and then the grooved steel plate 5 and the steel plate bearing platform 6 are pulled forward by the winch. When the grooved steel plate 5 and the steel plate bearing platform 6 are pulled to the front end of the bearing platform 1, the outrigger oil cylinder 2 is lowered, and the bearing platform 1 is lowered onto the grooved steel plate 5. Repeat the above process to complete the empty push.

[0034] Second departure preparation stage:

[0035] After the shield machine reaches the end of the station, repeat the translation and jacking steps to move the shield machine to the stepping hole to prepare for the second starting process.

[0036] Compared with the prior art, the advantages of the present invention are:

[0037] 1. Improve construction efficiency: The present invention changes the traditional sliding friction into rolling friction through the cooperation of the ball and the raceway, significantly reducing the friction resistance during the translation process, thereby reducing the power demand during the jacking process. It avoids the tedious preparation work such as laying rails, pre-embedded steel plates and concrete maintenance in the traditional process, shortens the construction period, and improves the overall construction efficiency.

[0038] 2. Improved flexibility: The device of the present invention only needs to lay steel plates in the translation direction to achieve the empty push and translation of the shield machine, without relying on the laying of fixed tracks. Therefore, the device can adapt to the translation requirements in different directions. Especially in the working conditions where the space is small or steering is required, the flexibility of construction is significantly enhanced, and it is suitable for more complex construction environments.

[0039] 3. Reduce manpower input: The present invention reduces the reliance on manual operation and the labor intensity of construction personnel through the design of the automation device. At the same time, the cooperation between the outrigger cylinder and the bearing frame makes the lifting and translation process more efficient and automated, further reducing manpower input and construction costs.

[0040] 4. Adapt to complex working conditions: This device can realize smooth, barrier-free continuous translation operation during the construction process, and can perform complex operations such as secondary starting, which solves the limitations of traditional empty push method in passing stations and curve construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic structural diagram of a shield machine translation air-pushing jacking device according to an embodiment of the present invention;

[0042] Figure 2 It is a stereoscopic diagram of the translation construction process of the translation air-pushing jacking device of the shield machine according to the embodiment of the present invention;

[0043] Figure 3 It is a side schematic diagram of the process of starting the empty push construction according to an embodiment of the present invention;

[0044] Figure 4 It is a side view schematic diagram of the process of finishing the empty push construction according to an embodiment of the present invention;

[0045] Figure 5 This is a schematic diagram of the workflow of the receiving preparation stage of an embodiment of the present invention;

[0046] Figure 6 Schematic diagram of the shield machine translation workflow according to an embodiment of the present invention;

[0047] Figure 7It is a schematic diagram of the process flow of the idle push phase in an embodiment of the present invention.

[0048] Among them, 1. load-bearing platform; 2. outrigger cylinder; 3. ball support frame; 4. ball; 5. grooved steel plate; 6. steel plate load-bearing platform. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and examples.

[0050] Embodiment 1:

[0051] like Figure 1 As shown, the present invention provides a shield machine translation air push jacking device, including a bearing frame 1, a leg cylinder 2, a ball support frame 3, a ball 4, a grooved steel plate 5, a steel plate bearing platform 6 and other components, and the specific structure is as follows:

[0052] The bearing platform 1 is a steel truss structure, which is formed by a number of short straight rods connected by bolts to form an arc-shaped surface similar to the outer shape of the shield body of the shield machine, and is used to support the weight of the shield machine;

[0053] The bottom of the load-bearing platform 1 is designed as a plane structure, and four iron plates are evenly installed on the bottom. The iron plates are connected to the ball support frame 3 by bolts to ensure the stability of the load-bearing platform 1;

[0054] Outrigger oil cylinders 2 are installed on both sides of the load-bearing platform 1 for lifting or lowering the load-bearing platform 1 . The outrigger oil cylinders 2 can be telescopically adjusted through a hydraulic system.

[0055] The ball support frame 3 is a thick steel plate, on which a number of circular holes matching the diameter of the balls 4 are evenly distributed for accommodating the balls 4, and the exposed portion of the balls 4 is used for achieving rolling friction;

[0056] The ball support frame 3 is connected to the bearing frame 1 by bolts, and the balls 4 at the bottom of the ball support frame 3 cooperate with the raceway of the grooved steel plate 5 to ensure smooth movement of the device.

[0057] Ball 4, grooved steel plate 5 and steel plate bearing platform 6:

[0058] The ball 4 is installed under the ball support frame 3 and matches the ball raceway on the grooved steel plate 5. The ball 4 can roll freely, thereby achieving smooth translation of the shield machine.

[0059] A ball rolling track is provided on the surface of the grooved steel plate 5 , the width of which is slightly smaller than the diameter of the ball 4 , imitating the movement mode of the bearing to reduce friction resistance.

[0060] The bottom of the grooved steel plate 5 is connected to the steel plate bearing platform 6 by bolts to prevent the grooved steel plate 5 from directly contacting the rough ground. The steel plate bearing platform 6 is in contact with the ground and can adjust the height to ensure the flatness of the upper surface of the grooved steel plate 5 and avoid problems such as jamming and overturning when the bearing platform moves due to factors such as uneven and rough ground. At the same time, a hook is installed on the steel plate bearing platform 6 to facilitate towing using a traction device such as a traction rope.

[0061] Embodiment 2:

[0062] like Figure 2-7 As shown, this embodiment provides a working method of a shield machine translation air-pushing jacking device, and the specific steps are as follows:

[0063] Receiving preparation stage:

[0064] As indicated Figure 5 As shown, firstly, a grooved steel plate 5 with rolling grooves and a steel plate bearing platform 6 are laid on the ground at the receiving end of the shield machine, and the rolling grooves are used to guide the rolling of the balls 4;

[0065] Transport the various components of the shield machine translation and empty push lifting device (bearing platform 1, outrigger cylinder 2, ball support frame 3 and ball 4, etc.) to the receiving end and assemble them on site;

[0066] Adjust the position of the device so that the ball 4 is correctly installed in the raceway of the grooved steel plate 5, ensure the matching degree between the ball 4 and the raceway, and ensure that the subsequent translation operation proceeds smoothly.

[0067] Start the outrigger oil cylinder 2, which extends and lifts the bearing platform 1 to make it reach the same height as the receiving hole of the shield machine;

[0068] Using the power of the shield machine itself, the shield machine is slowly moved to the top of the bearing platform 1 to complete the initial reception;

[0069] After receiving is completed, the outrigger cylinder 2 is retracted, so that the bearing platform 1 is stabilized on the ball support frame 3, ready for translation operation.

[0070] Translation phase:

[0071] As indicated Figure 2 , 6 As shown, the hydraulic jack installed on the side of the bearing platform 1 is started, and the bearing platform 1 and the shield machine are pushed sideways as a whole by the pushing effect of the jack;

[0072] During the advancement process, the balls 4 roll along the raceway of the grooved steel plate 5, so that the support frame 1 and the shield machine move forward smoothly;

[0073] Lifting stage:

[0074] As indicated Figure 6After the shield machine is translated into position, the outrigger cylinder 2 is started again to lift the supporting frame 1 and the shield machine as a whole;

[0075] During the jacking process, the construction workers lay a rolling track steel plate 5 of appropriate height under the bearing platform 1 to ensure the subsequent translation operation of the shield machine.

[0076] Empty push phase:

[0077] As indicated Figure 3 , 4 As shown in 7, after the load-bearing platform 1 is lifted to a predetermined height, a rolling steel plate 5 and a steel plate load-bearing platform 6 at the same height as the station platform are laid underneath it to ensure the stability of the empty push process;

[0078] A reaction support is installed at the other end of the station, and a winch is installed on the reaction support to drag the device to complete the empty push;

[0079] As indicated Figure 3 As shown, after the bearing platform 1 is lowered onto the grooved steel plate 5, the shield machine and the bearing platform 1 are pulled onto the station platform by a winch or other traction equipment to complete the empty push operation;

[0080] As indicated Figure 4 As shown, when the grooved steel plate 5 is reached, the outrigger oil cylinder 2 is lifted up a short distance, and then the grooved steel plate 5 and the steel plate bearing platform 6 are pulled forward by the winch;

[0081] When the grooved steel plate 5 and the steel plate bearing platform 6 are pulled to the front end of the bearing platform 1, the outrigger oil cylinder 2 is lowered, and the bearing platform 1 is lowered onto the grooved steel plate 5, and the shield machine and the bearing platform 1 are pulled onto the station platform by a winch or other traction equipment to realize the empty push operation. Repeat the above process to complete the empty push.

[0082] Secondary initiation stage:

[0083] When the shield machine completes the empty push and reaches the end of the station, repeat the aforementioned translation and jacking operations, gradually move the shield machine to the stepping hole, and prepare to complete the second start of the shield machine.

[0084] Through the air-push jacking device and its working method in this embodiment, the tedious preparation work in the jacking and translation process of the traditional shield machine is significantly reduced, the construction efficiency is improved, the manpower input is reduced, and it has high construction flexibility and can adapt to complex engineering environments.

[0085] Those skilled in the art will appreciate that the embodiments described herein are intended to help readers understand the implementation methods of the present invention, and should be understood that the protection scope of the present invention is not limited to such special statements and embodiments. Those skilled in the art can make various other specific variations and combinations that do not deviate from the essence of the present invention based on the technical revelations disclosed by the present invention, and these variations and combinations are still within the protection scope of the present invention.

Claims

1. A shield machine air-pushing jacking device, characterized in that: include: A bearing platform (1), a leg oil cylinder (2), a ball support frame (3), a ball (4), a ground steel plate (5) and a steel plate bearing platform (6); The bearing platform (1) is a steel truss structure, which is connected by short straight rods to form an arc-shaped curved surface structure similar to the shield body of the shield machine, and is used to support and bear the shield machine; a ball support frame (3) is installed at the bottom of the bearing platform (1); The outrigger oil cylinder (2) is installed on both sides of the load-bearing platform (1) and is used to support the load-bearing platform (1) during the jacking process. The outrigger oil cylinder (2) is retractable during the jacking process and can be retracted and out of contact with the ground after the jacking is completed. The ball support frame (3) is a thick flat plate structure, and a plurality of round holes matching the diameter of the balls (4) are evenly distributed on the bottom of the plate. The balls (4) are installed below the plate, and the balls (4) interact with the rolling tracks on the ground steel plate (5), so that the bearing platform (1) can roll along the rolling tracks under the action of the balls (4); The ground steel plate (5) is provided with a ball rolling track, the width of which is slightly smaller than the diameter of the ball (4), imitating the rolling form of a bearing, and is used to guide the ball support frame (3) to move smoothly; A steel plate bearing platform (6) is installed under the ground steel plate (5). The steel plate bearing platform (6) is in contact with the ground and can adjust the height to ensure the flatness of the grooved steel plate 5. At the same time, a hook is installed on the steel plate bearing platform (6) so that it can be towed using a traction device such as a traction rope.

2. The shield machine air-pushing lifting device according to claim 1 is characterized in that: Four iron plates are evenly distributed on the bottom of the load-bearing frame (1), and the load-bearing frame (1) and the ball support frame (3) are connected by bolts to ensure the stability and disassembly of the load-bearing frame (1).

3. The shield machine air-pushing lifting device according to claim 1 is characterized in that: The outrigger oil cylinder (2) is controlled by a hydraulic system, and the overall lifting and lowering operation of the shield machine is achieved by utilizing the telescopic action of the outrigger oil cylinder (2).

4. The shield machine air-pushing lifting device according to claim 1 is characterized in that: The ground steel plate (5) and the steel plate bearing platform (6) are laid in different directions. By adjusting the laying direction of the ground steel plate (5) and the steel plate bearing platform (6), the shield machine can be controlled to move in any direction without relying on a track for propulsion operations.

5. A working method of the shield machine air-pushing jacking device according to any one of claims 1 to 4, comprising: Receiving preparation stage: Laying a ground steel plate (5) with rolling grooves and a steel plate bearing platform (6) on the ground at the receiving end of the shield machine; Transport the various components of the shield machine's air-pushing jacking device to the receiving end, and complete assembly and splicing; Adjust the position of the device so that the ball (4) is correctly installed in the raceway of the ground steel plate (5) to ensure that the ball (4) and the raceway are properly matched; Start the outrigger oil cylinder (2) to lift the bearing platform (1) to the same height as the receiving hole of the shield machine; Using the shield machine's own power, the shield machine is slowly moved onto the supporting platform (1); After receiving is completed, the outrigger oil cylinder (2) is retracted, and the bearing platform (1) and the shield machine are stably supported on the ball support frame (3); Translation phase: Start the hydraulic jack on the side of the bearing platform (1), and use the jack to push the shield machine, so that the bearing platform (1) and the shield machine as a whole move horizontally along the rolling track of the ground steel plate (5); During the translation process, keep the thrust of the hydraulic jack stable to avoid severe vibration or imbalance; According to the moving speed of the shield machine, ground steel plates (5) are laid alternately in the forward direction in a timely manner to ensure the continuous translation of the shield machine; Lifting stage: When the shield machine moves to the predetermined position, the outrigger oil cylinder (2) is started to lift the shield machine again; After the outrigger oil cylinder (2) is extended, it contacts the ground, and the bearing platform (1) is lifted to a position slightly higher than the specified position, so as to facilitate the laying of the new rolling track steel plate (5) and the steel plate bearing platform (6); Empty push phase: After the lifting is completed, a rolling steel plate (5) and a steel plate bearing platform (6) are laid under the bearing platform (1) at the same height as the platform of the rail station; After the bearing platform (1) is lowered onto the rolling steel plate (5), the shield machine and the bearing platform (1) are pulled onto the station platform by a winch or other traction equipment to complete the empty push operation. When the shield machine reaches the end of the grooved steel plate (5), the outrigger oil cylinder (2) is lifted up a short distance, and then the grooved steel plate (5) and the steel plate bearing platform (6) are pulled forward by the winch. When the grooved steel plate (5) and the steel plate bearing platform (6) are pulled to the front end of the bearing platform (1), the outrigger oil cylinder (2) is lowered, and the bearing platform (1) is lowered onto the grooved steel plate (5). The above process is repeated to complete the empty push. Second departure preparation stage: After the shield machine reaches the end of the station, repeat the translation and jacking steps to move the shield machine to the stepping hole to prepare for the second starting process.

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