Shield tunneling machine station-crossing device
By designing a shield machine station passing device including slip brackets and tracks, the problem of excessive material consumption during the entire shield machine passing through the station is solved, and the effect of reducing construction costs and improving material reuse is achieved.
Patent Information
- Application Number
- CN202421649369.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The material consumption of existing shield machine is too high when passing through the station, resulting in high construction costs and low material reuse rate.
A shield machine station passing device is designed, including laid ground tracks, movable sliding brackets and starting racks. Through the combination of sliding brackets and tracks, material consumption and construction process are optimized.
By setting up slip brackets and tracks, the consumption of materials is optimized, the construction cost is effectively reduced, the material reuse rate is increased, and the construction efficiency is improved.
Smart Images
Figure CN222863400U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shield construction, in particular to a shield machine station passing device. Background Art
[0002] There are generally two methods for shield machines and their supporting equipment to pass the station, namely, passing the station by using pipe segments to propel the machine through the station; passing the station by using an external propulsion device. However, the above methods consume a lot of materials and the installation time of the external device is relatively long. The existing technology can improve the passing efficiency through a device for the whole shield machine to pass the station, but the material consumption also increases. Therefore, reducing material consumption and using local materials to pass the station quickly has become the research direction of this utility model. Utility Model Content
[0003] The utility model aims to overcome the defects of the prior art, provide a shield machine station passing device, and solve the problem of excessive material consumption when the existing shield machine passes the station.
[0004] The utility model provides a shield machine station-passing device, and its technical solution is: it is used for the shield machine and the starting frame to pass the station as a whole, and the station-passing device comprises: a track laid on the ground; a sliding bracket movably arranged on the track, and the starting frame is slidably arranged above the sliding bracket; a receiving bracket fixedly arranged on the upper end of the starting frame, and the receiving bracket is used to place the shield machine drilled out of the tunnel.
[0005] Furthermore, legs are provided on both sides of the shield machine, and upper ends of the legs are fixedly connected to the shield machine.
[0006] Furthermore, a hydraulic cylinder pointing vertically downward is fixedly disposed at the lower end of the supporting leg, a supporting seat of the hydraulic cylinder is fixedly connected to the corresponding supporting leg, and the extended end is in contact with the ground.
[0007] Furthermore, a traction ring is fixedly provided at the front end of the sliding bracket.
[0008] Furthermore, it also includes a winch arranged in front of the shield machine, and the end of the wire rope of the winch is fixedly connected to the sliding bracket.
[0009] The utility model also provides a construction method for a shield machine to pass a station, comprising the following steps: excavating an enlarged end at the tail of the tunnel and the head of the next tunnel, the size of the enlarged end being larger than the size of the tunnel; installing a starting frame at the bottom of the shield machine, and moving the shield machine and the starting frame laterally, so that the center line of the shield machine coincides with the center line of the passing station path; providing a passing station device, and installing the passing station device to the bottom of the shield machine; laying tracks on the longitudinal movement route, and placing the shield machine and the passing station device on the tracks; moving the shield machine longitudinally into another enlarged end; after the longitudinal movement of the shield machine is completed, performing a second transverse movement of the shield machine in the enlarged end, so that the center line of the shield machine coincides with the center line of the tunnel.
[0010] Furthermore, before the shield machine is moved, the rear supporting device on the shield machine is removed; after the shield machine is moved horizontally for the second time, the removed rear supporting device is moved across the station, and the rear supporting device and the shield machine are installed.
[0011] Furthermore, when the rear-end supporting device is moved, a travel track is laid on the moving route, the travel track is connected to the track in the station, a rear-end supporting trolley is arranged on the travel track, and the rear-end supporting device is moved by the rear-end supporting trolley.
[0012] Furthermore, since the ground of the expanded end is lower than the ground of the station, when the shield machine enters the station from the expanded end, it needs to go up the steps. When going up the steps, the sliding bracket, the starting frame and the shield machine are fixed together and lifted. After the lifting is completed, the sliding bracket is placed on the track; when the shield machine enters the next expanded end from the station, it needs to go down the steps. When going down the steps, tracks and piers are laid in the expanded end, one end of the track is connected to the track in the station, and the other end is flush with the ground of the expanded end, so that the track in the expanded end forms a certain angle with the ground, so that the sliding bracket slides on the track to achieve the purpose of going down the steps.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] By setting up sliding brackets and rails, material consumption is optimized, construction costs are effectively reduced, and material reuse rate is increased.
[0015] The materials used can be found everywhere during the construction process and only require simple assembly, so that the method can be implemented in different environments, which effectively improves the scope of application of the method. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1It is the front view of the shield machine station passing device of the utility model.
[0017] Figure 2 This is a cross-sectional view of the track layout of the shield machine station passing device of the utility model.
[0018] Figure 3 It is a schematic diagram of the track layout of the shield machine station passing device of the utility model.
[0019] Figure 4 It is a side view of the shield machine station passing device of the utility model.
[0020] Figure 5 This is a cross-sectional view of the transverse construction of the shield machine station passing device of the utility model.
[0021] Figure 6 This is the construction flow chart of the shield machine passing the station of this utility model.
[0022] Legend: 1. Shield machine; 2. Sliding bracket; 3. Starting frame; 4. Receiving bracket; 5. Outrigger; 6. Hydraulic cylinder; 7. Pier; 8. Track; 9. Winch. DETAILED DESCRIPTION
[0023] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
[0024] See also Figure 1 The utility model provides a shield machine station passing device to solve the problem of excessive material consumption when the existing shield machine passes the station. By setting the sliding bracket and the track, the material consumption is optimized, the construction cost is effectively reduced, and the material reuse rate is increased. The materials used can be found everywhere during the construction process, and only simple assembly is required, so that the method can be implemented in different environments, which effectively improves the application scope of the method.
[0025] See also Figure 1 , showing the front view of the shield machine station passing device of the utility model. Figure 2 , showing the track layout cross-section of the shield machine station passing device of the utility model. Figure 3 , showing the schematic diagram of the track layout of the shield machine station passing device of the utility model. Figure 4 , showing the side view of the shield machine station passing device of the utility model. Figures 1 to 4 , a shield machine station passing device of the utility model is described.
[0026] like Figures 1 to 4As shown, a shield machine station-passing device of the utility model is used for the integrated station-passing of a shield machine 1 and a starting frame 3, and the station-passing device comprises: a track 8 laid on the ground; a sliding bracket 2 movably arranged on the track 8, and the starting frame 3 is slidably arranged above the sliding bracket 2; a receiving bracket 4 fixedly arranged on the upper end of the starting frame 3, and the receiving bracket 4 is used for placing the shield machine 1 drilled out of the tunnel.
[0027] In a preferred embodiment, the radius of the shield machine 1 is 3220 mm.
[0028] In a preferred embodiment, the receiving bracket is 69.5 cm high and 9.5 m long and is made of steel.
[0029] In a specific embodiment, legs 5 are provided on both sides of the shield machine 1 , and the upper ends of the legs 5 are fixedly connected to the shield machine 1 .
[0030] In a specific embodiment, a hydraulic cylinder 6 is fixedly provided at the lower end of the support leg 5 and extends vertically downward, and a support seat of the hydraulic cylinder 6 is fixedly connected to the corresponding support leg 5, and the extended end is in contact with the ground. The hydraulic cylinder 6 provides an upward thrust to the shield machine 1.
[0031] In a specific embodiment, a traction ring is fixedly provided at the front end of the sliding bracket 2 .
[0032] In a preferred embodiment, there are two sliding brackets 2, both of which are composed of steel plates with a width of 500mm, a length of 12mm, and a thickness of 20mm. The front end of the sliding bracket 2 is connected by two 20a I-beams by butt welding, and the traction ring is welded and fixed in the middle of the I-beam. The rear ends of the two sliding brackets 2 are connected by a 200mm wide channel steel, and three 43 heavy-duty rails are welded on the sliding bracket 2. Holes are provided on the two rails close to the outside, which are used as fixing points for the reaction seat of the jack to provide reaction force for the jack. The holes of the left and right rails are symmetrical to prevent unevenness on the left and right when the jack is pushed. The holes for fixing the reaction seat are grouped into three, and the spacing between each group is 30cm. There are 10 groups in total. Among them, the stroke of the jack is 35cm.
[0033] In a specific embodiment, it further includes a hoist 9 arranged in front of the shield machine 1 , and the end of the wire rope of the hoist 9 is fixedly connected to the traction ring on the sliding bracket 2 .
[0034] In a preferred embodiment, the maximum output tension of the winch 9 is 5T.
[0035] In a preferred embodiment, a plurality of piers 7 are fixedly disposed at the lower end of the track 8 .
[0036] The utility model also provides a method for a shield machine to pass a station, comprising the following steps: excavating an enlarged end at the tail of the tunnel and the head of the next tunnel, the size of the enlarged end being larger than the size of the tunnel; installing a starting frame 3 at the bottom of the shield machine 1, and moving the shield machine 1 and the starting frame 3 laterally, so that the center line of the shield machine 1 coincides with the center line of the passing station path; providing a passing station device, and installing the passing station device to the bottom of the shield machine 1; laying a track 8 on the longitudinal movement route, and placing the shield machine 1 and the passing station device on the track 8; moving the shield machine 1 longitudinally into another enlarged end; after the longitudinal movement of the shield machine 1 is completed, performing a second transverse movement of the shield machine 1 in the enlarged end, so that the center line of the shield machine 1 coincides with the center line of the tunnel.
[0037] In a specific embodiment, an enlarged end is opened at the end of the tunnel, and the enlarged end is a rectangular space, the size of which is larger than the size of the tunnel excavated by the shield machine 1. The starting frame 3 and the receiving bracket 4 are located in the enlarged end. The shield machine 1 drills out of the tunnel and enters the enlarged end, and the shield machine 1 is placed on the receiving bracket 4.
[0038] Since the tunnel entrance is on the side of the station, when the shield machine 1 drills out of the tunnel, its circumferential surface may rub against the wall of the station, and since the distance between the shield machine 1 and the side wall of the station is too small, the next step of construction is difficult due to limited space, and it may even directly rub and collide with the wall. Therefore, it is necessary to dig an expanded end at the end of the tunnel to facilitate the next step of construction of the shield machine 1 that has drilled out of the tunnel. By moving the shield machine 1 horizontally, the distance between the shield machine 1 and the station wall can be increased, thereby preventing friction and collision, and increasing the construction space.
[0039] In a specific embodiment, an enlarged end is opened in the area where the shield machine 1 performs a second lateral movement, and the shield machine 1 performs a second lateral movement, so that the distance between the shield machine 1 and the station wall can be restored.
[0040] In a preferred embodiment, a limiting steel plate is welded between the shield machine 1 and the starting frame 3 to prevent the shield machine 1 from tipping over during the lateral movement.
[0041] In a specific implementation, before the shield machine 1 is moved, the rear supporting device on the shield machine 1 is removed; after the shield machine 1 is horizontally moved for the second time, the removed rear supporting device is moved across the station and installed on the shield machine 1.
[0042] In a specific embodiment, when the rear-end supporting device is moved, a travel track is laid on the moving route, the travel track is connected to the track 8 in the station, a rear-end supporting trolley is arranged on the travel track, and the rear-end supporting device is moved by the rear-end supporting trolley.
[0043] In a specific embodiment, since the ground of the expanded end is lower than the ground of the station, when the shield machine 1 enters the station from the expanded end, it is necessary to go up the steps. When going up the steps, the sliding bracket 2, the starting frame 3 and the shield machine 1 are fixed together and lifted. After the lifting is completed, the sliding bracket 2 is placed on the track 8; when the shield machine 1 enters the next expanded end from the station, it is necessary to go down the steps. When going down the steps, the track 8 and the pier 7 are laid in the expanded end, one end of the track 8 is connected to the track 8 in the station, and the other end is flush with the ground of the expanded end, so that the track 8 in the expanded end forms a certain angle with the ground, so that the sliding bracket 2 slides on the track 8 to achieve the purpose of going down the steps.
[0044] In a specific implementation, steel plates are placed on the ground of the two enlarged ends.
[0045] In a preferred embodiment, the process of disassembling the shield machine 1 and the rear supporting device is as follows: disassembly of the second section of the screw conveyor: use two guide chains to hang the feed end and the discharge end of the second section of the screw conveyor, remove the connecting bolts of the discharge end of the first section of the screw conveyor and the feed end of the second section of the screw conveyor, and then remove the hook on the connecting bridge of the discharge end of the second section of the screw conveyor, and finally use the guide chain to hang down the second section of the screw conveyor, and place it on the segment car padded with square wood, tie the screw conveyor tightly with two guide chains, and then use the winch 9 to tow it to the designated area in the rear supporting trailer.
[0046] Dismantling of various pipelines: remove the hydraulic pipelines in the shield machine 1 and on the trailer, clean the plugs of the hydraulic pipelines, and mark the separation points of the hydraulic pipelines with marking plates; remove the water pipes and air pipes on the shield machine 1 and the trailer, and seal them with cable ties and plastic sheets; remove the electrical lines in the shield machine 1 and on the trailer.
[0047] In a preferred embodiment, the steps of lateral movement of the shield machine 1 are as follows: the shield machine 1 is placed on the receiving bracket 4, the receiving bracket 4 is fixed on the starting frame 3, and the starting frame 3 is placed on the steel plate on the ground of the expansion end. The thrust of the required hydraulic jack is calculated according to the actual size of the station and the shield machine 1, and two hydraulic jacks with corresponding thrust are provided; two hydraulic jacks are installed on the side of the starting frame 3, and the support of the hydraulic jack is fixed by welding the steel plate with the bottom steel plate; the two hydraulic jacks are started to perform uniform lateral translation of the shield machine 1 and the bracket.
[0048] Specifically, the shield machine 1 has the following technical requirements during the transverse movement: butter is applied on the steel plate to reduce the friction with the starting frame 3 .
[0049] Before the shield machine 1 is moved laterally, fixed limiting steel plates are welded between the starting frame 3 and the shield machine 1, which are respectively located on both sides of the front shield, middle shield and rear shield of the shield machine 1, with a total of 6. In addition, fixed connecting blocks are welded between the shield machine and the starting frame 3, which are respectively located on both sides of the front shield, middle shield and rear shield of the shield machine 1, wherein there are 2 on both sides of the front shield and the middle shield, and 1 on both sides of the rear shield.
[0050] The two contact points between the hydraulic jacks and the shield machine 1 are: one is located 1.4 m away from the front end of the cutter head of the shield machine 1 , and the other is located 0.6 m away from the rear end of the shield machine 1 .
[0051] The hydraulic jacks share a hydraulic pump station, which is located on the same side of the starting frame 3; the support of the hydraulic jack is made of 20mm thick steel plate; the weld is checked every 30cm when the hydraulic jack is pushed out, and then the support point is reselected and welding is carried out, and then the horizontal movement is carried out.
[0052] In a specific embodiment, the specific operating steps for the shield machine 1 to move longitudinally through the station are as follows: Preliminary preparation: Before the shield machine 1 moves longitudinally, a step is poured between the ground of the expanded end and the ground of the station, and the pouring height is 56 cm. After the step solidifies, the track 8 is laid on it.
[0053] The shield machine 1 is lifted and a sliding bracket 2 is placed underneath it: after the shield machine 1 is moved horizontally to its position, the hydraulic cylinder 6 lifts the shield machine 1, stops after lifting 200 mm, and installs the sliding bracket 2 to the lower end of the starting frame 3.
[0054] Longitudinal movement of the shield machine 1: After the sliding bracket 2 is installed, the winch 9 is installed in front of the shield machine 1, and a jack is installed at the rear of the shield machine 1. After the starting frame 3 is pushed forward by the jack for 3 m, the hydraulic cylinder 6 is used to lift the shield machine 1 and the starting frame 3, and then the winch 9 is used to move the sliding bracket 2 forward by 3 m, and then the shield machine 1 and the starting frame 3 are lowered; this operation is repeated to realize the longitudinal movement of the shield machine 1.
[0055] The shield machine 1 has another longitudinal movement method: using the winch 9 to drive the sliding bracket 2 to move along the track 8, thereby driving the shield machine 1 to move.
[0056] The shield machine 1 goes up the steps: the shield machine 1 and the starting frame 3 are lifted by a jack, the lifting height being higher than the height of the track 8 on the steps, the shield machine 1 is pushed forward, a sliding bracket 2 is placed on the track 8, and the shield machine 1 and the starting frame 3 are placed on the sliding bracket 3.
[0057] The shield machine 1 continues to move longitudinally: two 100T jacks are used to push the shield machine 1 to move longitudinally. Every time the shield machine 1 moves forward 3m, the hydraulic cylinder 6 is used to lift the shield machine 1, and then the winch 9 is used to pull the sliding bracket 2 forward 6m, and the shield machine 1 and the starting frame 3 are placed on the sliding bracket 2. The operation is repeated in this way.
[0058] Arriving at a distance of about 1m from the lower step, the pier 7 and the track 8 are laid on the ground at the enlarged end, so that the height of the track 8 is flush with the track 8 laid in the station, and the laying range is 9.4m long and 4.6m wide, with the height flush with the station platform and the width not exceeding the jacking position of the hydraulic cylinders 6 on both sides of the shield machine 1. After the laying is completed, the shield machine 1 continues to move longitudinally until the sliding bracket 2 falls on the track 8 at the enlarged end as a whole, and then continues to move forward.
[0059] After longitudinally moving to the secondary starting position, the shield machine 1 is lifted, the sliding bracket 2 is removed, and then the shield machine 1 and the sliding bracket 2 are placed on the ground.
[0060] In a preferred embodiment, the steps of the rear-end supporting device passing the station are as follows: after the shield machine 1 passes the station, a rear-end supporting trolley running track is laid on the ground, and the rear-end supporting trolley is movably arranged on the rear-end supporting trolley running track.
[0061] Because the ground of the expanded end is not at the same height as the ground of the station, a horse stool is placed under the trolley running track. The horse stool is made of 20-section steel. By setting the horse stool, the slope of the trolley running track is changed to make the slope gentle, thereby effectively preventing the rear matching trolley from slipping;
[0062] Specifically, the transition curve of the horse stool is 2.5%, the distance between two adjacent horse stools is 1m, the height difference between two adjacent horse stools is 3cm, and after the bottom pad height of the horse stool is 40cm, the laying of the horse stool is stopped and the laying of steel section combinations is replaced. The steel section combination is a combination of horizontal 20H steel and vertical 20H steel, and the distance between two adjacent steel section combinations is 1m, until the walking track is flush with the ground.
[0063] In a preferred embodiment, the starting frame 3 is placed on the steel plate on the ground of the enlarged end, the starting elevation is controlled (when the receiving well is backfilled with concrete, the height of the padding material must be considered), and it is aligned with the shield machine 1 that is about to arrive. Two reaction force supports should also be set between the starting frame 3 and the end wall of the tunnel portal to prevent the starting frame 3 from moving forward when the shield machine 1 pushes onto the starting frame 3.
[0064] In a preferred embodiment, the shield machine 1 has the following anti-overturning measures when passing through a station: after the shield machine 1 is lifted into place, the receiving bracket 4 is fixed, the track 8 is extended, and then the sliding bracket 2 is dropped onto the track 8; to ensure the stability of the shield body, the hydraulic pump station is placed in the tail of the shield to ensure that the stroke of the cylinder can be adjusted at any time during translation, making the shield machine 1 smoother.
[0065] The utility model is described in detail above in conjunction with the embodiments of the drawings. A person skilled in the art can make various variations of the utility model according to the above description. Therefore, some details in the embodiments should not constitute a limitation of the utility model, and the scope of protection of the utility model shall be defined by the scope of the attached claims.
Claims
1. A shield machine station passing device, used for the shield machine (1) and the starting frame (3) to pass the station as a whole, characterized in that: The station-passing device comprises: Tracks laid on the ground (8); A sliding bracket (2) is movably arranged on the track (8), and the starting frame (3) is slidably arranged above the sliding bracket (2); A receiving bracket (4) is fixedly mounted on the upper end of the starting frame (3), and the receiving bracket (4) is used to place the shield machine (1) drilled out of the tunnel.
2. A shield machine station passing device according to claim 1, characterized in that: Support legs (5) are provided on both sides of the shield machine (1), and the upper ends of the support legs (5) are fixedly connected to the shield machine (1).
3. A shield machine station passing device according to claim 2, characterized in that: A hydraulic cylinder (6) is fixedly arranged at the lower end of the supporting leg (5) and extends vertically downward. The supporting seat of the hydraulic cylinder (6) is fixedly connected to the corresponding supporting leg (5), and the extended end is in contact with the ground.
4. A shield machine station passing device according to claim 1, characterized in that: A traction ring is fixedly provided at the front end of the sliding bracket (2).
5. A shield machine station passing device according to claim 4, characterized in that: It also includes a hoist (9) arranged in front of the shield machine (1), and the end of the steel wire rope of the hoist (9) is fixedly connected to the traction ring on the sliding bracket (2).