Sleeve counter-pull adjusting mechanism

Abstract

The utility model relates to a sleeve counter-pull adjusting mechanism which is used for aligning a sleeve assembly to a to-be-tunneled area of bypass channel construction in a main tunnel. The sleeve counter-pull adjusting mechanism comprises a bracket device, the bracket device comprises a bracket assembly and a lifting assembly installed on the bracket assembly, the lifting assembly controls lifting height adjustment of the bracket assembly, and the bracket assembly is used for bearing a sleeve assembly. One end of each counter-pulling assembly is connected with a tunnel segment, and the other end of each counter-pulling assembly is connected with the sleeve assembly so as to pull the sleeve assembly to move towards the to-be-tunneled area. The bracket device bears the sleeve assembly, and the lifting assembly adjusts the sleeve assembly to be aligned with a to-be-tunneled area. In the vertical direction, the bracket device can lift the sleeve assembly upwards to get close to the to-be-tunneled area, and therefore the difficulty is easily adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction technical field especially relates to a sleeve reverse pull adjusting mechanism. BACKGROUND

[0002] With the development of city and tunnel technology, various tunnels are constructed more and more, such as subway, municipal pipe network, highway tunnel and other tunnel construction. Multiple bypass channels are excavated in the preset position of the main tunnel, and the bypass channels can be set as functional tunnels such as communication channels, air wells and escape channels. Among them, the construction direction of the bypass channel can be excavated from the horizontal direction, vertical direction or other inclined angle direction of the main tunnel.

[0003] In the related art, a sleeve assembly is installed at the opening of the to-be-excavated area of the main tunnel, and the sleeve assembly is used to define and support the excavation main body, so that the excavation main body can break the to-be-excavated area and implement the excavation construction of the bypass channel. Therefore, the sleeve assembly needs to be pre-installed on the tunnel segment around the to-be-excavated area. In the prior art, the sleeve assembly needs to be welded and positioned by a trolley device cooperating with an adjusting mechanism. For example, the document with the publication number CN112031786A discloses a hole portal ring beam structure and a steel sleeve connection method.

[0004] The existing trolley device can fix the sleeve assembly to the tunnel segment at a horizontal angle through corresponding procedures. However, in the inclined angle or vertical bypass channel construction, the existing trolley device is difficult to adjust the angle and height of the sleeve assembly. Even if the trolley device can adjust the installation angle of the sleeve assembly at an inclined angle or in a vertical direction, the adjusting mechanism and adjusting procedure required by the trolley device increase in complexity, which increases the construction cost and requires high skills of construction personnel, and therefore needs to be improved. SUMMARY

[0005] To overcome the problems in the related art, the utility model embodiment provides a sleeve reverse pull adjusting mechanism to solve the technical problems of difficult sleeve assembly debugging alignment and high construction cost.

[0006] According to the first aspect of the utility model embodiment, a sleeve reverse pull adjusting mechanism is provided for aligning the sleeve assembly with the to-be-excavated area of the bypass channel construction in the main tunnel, and the sleeve reverse pull adjusting mechanism comprises:

[0007] A bracket device comprises a bracket assembly and a lifting assembly installed on the bracket assembly, the lifting assembly controls the lifting height adjustment of the bracket assembly, and the bracket assembly is used to carry the sleeve assembly;

[0008] At least two reverse pull assemblies, one end of the reverse pull assembly is connected with the tunnel segment, and the other end of the reverse pull assembly is connected with the sleeve assembly to pull the sleeve assembly to move towards the to-be-excavated area.

[0009] In an embodiment, a plurality of the anti-pulling assemblies are symmetrically distributed relative to a center line of the sleeve assembly.

[0010] In an embodiment, the anti-pulling assembly comprises a connecting seat and a telescopic member, the connecting seat is connected with the tunnel segment, the telescopic member is connected with the sleeve assembly, and the telescopic member is driven to adjust the posture of the sleeve assembly through telescopic adjustment.

[0011] In an embodiment, the telescopic member is an anti-pulling oil cylinder.

[0012] In an embodiment, the anti-pulling assembly further comprises an adjusting frame, the adjusting frame is fixedly connected with the sleeve assembly and protrudes along the radial direction of the sleeve assembly, and the telescopic member is connected with the adjusting frame.

[0013] In an embodiment, the anti-pulling assembly further comprises an ear seat, the ear seat is movably connected with the sleeve assembly.

[0014] In an embodiment, the connecting seat is pre-buried in the tunnel segment; or,

[0015] the connecting seat is cast connected with the tunnel segment; or,

[0016] the connecting seat is welded connected with the tunnel segment.

[0017] In an embodiment, the bracket assembly is provided with an inner recessed positioning groove, and the positioning groove is used to define the sleeve assembly.

[0018] In an embodiment, the bracket assembly comprises two lifting beams and a bottom bracket, and the lifting assembly is mounted on the lifting beams; wherein,

[0019] the bottom bracket is slidably connected with the lifting beams; or,

[0020] the bottom bracket is fixedly connected with the lifting beams.

[0021] In an embodiment, the lifting assembly comprises lifting oil cylinders, and some of the lifting oil cylinders are independently adjusted or jointly adjusted.

[0022] In an embodiment, the tunneling direction of the bypass tunnel is inclined relative to the horizontal plane; or,

[0023] the tunneling direction of the bypass tunnel is parallel to the horizontal plane; or,

[0024] the tunneling direction of the bypass tunnel is perpendicular to the horizontal plane.

[0025] The technical solution provided by the embodiments of this utility model can include the following beneficial effects: the bracket device carries the sleeve assembly, and the lifting component adjusts the sleeve assembly to align with the area to be excavated. In the vertical direction, the bracket device can also lift the sleeve assembly upwards towards the area to be excavated, thereby simplifying the adjustment. The counter-pull component pulls the sleeve assembly close to and abuts against the preset position of the tunnel segment, which simplifies the structure for aligning the sleeve assembly with the area to be excavated. Furthermore, multiple counter-pull components can independently or jointly adjust the sleeve assembly, thereby simplifying the adjustment structure of the sleeve assembly and reducing construction costs. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0027] Figure 1 This is a schematic diagram illustrating a sleeve counter-pull adjustment mechanism supporting a sleeve assembly according to one embodiment.

[0028] Figure 2 This is a schematic diagram illustrating, according to one embodiment, how a sleeve back-pull adjustment mechanism adjusts the sleeve assembly to align with the area to be excavated.

[0029] Figure 3 This is a schematic diagram illustrating, according to one embodiment, how a sleeve counter-pull adjustment mechanism pulls a sleeve assembly against a tunnel segment.

[0030] Figure 4 This is a schematic diagram illustrating, according to one embodiment, how the sleeve counter-pull adjustment mechanism lifts the sleeve assembly upwards for alignment.

[0031] In the figure, there are: anti-pull assembly 10; telescopic component 11; connecting seat 12; ear seat 13; adjusting frame 14; bracket device 20; lifting assembly 21; bracket assembly 22; bottom bracket 221; positioning groove 2211; axial stop rib 2212; lifting beam 222; sleeve assembly 30; and tunnel segment 40. Detailed Implementation

[0032] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0033] As Figures 1 to 4 shown, the utility model provides a sleeve reverse pull adjusting mechanism, sleeve reverse pull adjusting mechanism is used for sleeve assembly 30, and drives sleeve assembly 30 to align the area to be excavated, and the area to be excavated is the area to be constructed corresponding to the bypass channel in the main tunnel. The bypass channel is defined as other tunnels excavated from the side of the main tunnel, and the excavation direction can be horizontal, vertical or other angle direction relative to the horizontal plane. For example, the bypass channel includes the communication channel, the air shaft, the escape channel and the like.

[0034] In an embodiment, the excavation direction of the bypass channel is inclined relative to the horizontal plane, or the excavation direction of the bypass channel is parallel to the horizontal plane, so that a transverse channel such as a communication channel, an escape channel and the like can be excavated. Alternatively, the excavation direction of the bypass channel is perpendicular to the horizontal plane, and a vertical shaft or an air shaft can be excavated.

[0035] The sleeve reverse pull adjusting mechanism includes a bracket device 20 and at least two reverse pull assemblies 10, and the bracket device 20 is used to carry the lifting movement of the sleeve assembly 30 and adjust the lifting height of the sleeve assembly 30. For example, when the center line of the sleeve assembly 30 is arranged horizontally, the bracket device 20 adjusts the horizontal height of the center line of the sleeve assembly 30. When the center line of the sleeve assembly 30 is arranged vertically, the bracket device 20 adjusts the lifting height of the sleeve assembly 30.

[0036] The bracket device 20 includes a bracket assembly 22 and a lifting assembly 21 mounted on the bracket assembly 22, the lifting assembly 21 controls the lifting height adjustment of the bracket assembly 22, and the bracket assembly 22 is used to carry the sleeve assembly 30. The bracket assembly 22 supports and positions the sleeve assembly 30, and the lifting assembly 21 can extend and retract to adjust the height of the sleeve assembly 30. The bracket device 20 carries the sleeve assembly 30, and the lifting assembly 21 adjusts the sleeve assembly 30 to align the area to be excavated. In the vertical direction, the bracket device 20 can also lift the sleeve assembly 30 to approach the area to be excavated upward, so as to simply adjust the difficulty.

[0037] One end of the reverse pull assembly 10 is connected with the tunnel segment 40 to form a fixed end, and the other end of the reverse pull assembly 10 is connected with the sleeve assembly 30 to form a movable end, so as to pull the sleeve assembly 30 to move towards the area to be excavated. The reverse pull assembly 10 connects the tunnel segment 40 and the sleeve assembly 30, and drives the sleeve assembly 30 to move towards the area to be excavated in the shortening process, so as to adjust the distance and angle of the sleeve assembly 30 close to the tunnel segment 40.

[0038] The anti-pulling assembly 10 pulls the sleeve assembly 30 to abut the preset position of the tunnel segment 40, which can simplify the alignment of the sleeve assembly 30 to the structure of the area to be excavated. In addition, the plurality of anti-pulling assemblies 10 can independently or jointly adjust the sleeve assembly 30, thereby simplifying the adjustment structure of the sleeve assembly 30 and reducing the construction cost.

[0039] Preferably, the plurality of anti-pulling assemblies 10 are symmetrically distributed relative to the center line of the sleeve assembly 30. The sleeve assembly 30 can flexibly adjust the motion posture of the sleeve assembly 30, and the symmetrically distributed anti-pulling assemblies 10 can uniformly control the motion of the sleeve assembly 30 and balance the force acting on the sleeve assembly 30.

[0040] Optionally, two anti-pulling assemblies 10 are provided, which are symmetrically distributed on both sides of the sleeve assembly 30. Preferably, the sleeve assembly 30 is opened at an upward inclined or vertical angle. Preferably, the center line of the sleeve assembly 30 is arranged in a horizontal direction, and the anti-pulling assemblies 10 are distributed on both sides of the sleeve assembly 30.

[0041] Optionally, four anti-pulling assemblies 10 are provided, which are arranged around the sleeve assembly 30 to form a circumferential adjustment. Preferably, the sleeve assembly 30 is opened at an upward inclined or vertical angle. Preferably, the center line of the sleeve assembly 30 is arranged in a vertical direction, and the anti-pulling assemblies 10 are uniformly distributed around the center line of the sleeve assembly 30.

[0042] In an optional embodiment, the anti-pulling assembly 10 includes a connecting seat 12 and a telescopic member 11, the connecting seat 12 is connected with the tunnel segment 40. The telescopic member 11 is connected with the sleeve assembly 30, and the telescopic member 11 is driven to adjust the posture of the sleeve assembly 30 through telescopic adjustment.

[0043] The telescopic member 11 can be adjusted in a telescopic manner, and the anti-pulling assembly 10 is adjusted in a telescopic manner through the telescopic member 11, so as to change the overall length of the anti-pulling assembly 10. For example, the telescopic member 11 can adopt an oil cylinder mechanism or a stud nut mechanism. In the stud nut mechanism, one of them is connected to the connecting seat 12, and the other is connected to the sleeve assembly 30, which can be manually adjusted. Preferably, the oil cylinder mechanism is adopted to realize automatic adjustment.

[0044] The anti-pulling assembly 10 is provided in plurality, when all the anti-pulling assemblies 10 are synchronously telescoped and the telescopic amount is the same, the sleeve assembly 30 is realized as a whole translation.

[0045] When the anti-pulling assemblies 10 are not telescoped synchronously or the anti-pulling assemblies 10 are adjusted individually, the sleeve assembly 30 can realize the fine adjustment of the direction and angle, and at the same time, the telescopic movement of the anti-pulling assembly 10 drives the connecting end of the sleeve assembly 30 to abut the tunnel segment 40 corresponding to the area to be excavated.

[0046] At least two anti-pulling assemblies 10 are distributed on both sides of the sleeve assembly 30, and each anti-pulling assembly 10 is connected to the trolley body and the tunnel segment 40. At least two anti-pulling assemblies 10 pull the sleeve assembly 30 to align to the tunnel segment 40 in the area to be excavated.

[0047] Preferably, the telescopic part 11 is an anti-pulling oil cylinder, and the two ends of the anti-pulling oil cylinder are directly connected to the tunnel segment 40 and the sleeve assembly 30. Alternatively, the two ends of the anti-pulling oil cylinder are connected to the tunnel segment 40 and the sleeve assembly 30 through an adapter. The telescopic part 11 is telescopic, thereby controlling the telescopic movement structure of the anti-pulling assembly 10.

[0048] As shown in Figures 1 to 4 The connecting seat 12 is connected to the tunnel segment 40 to fix one end of the anti-pulling assembly 10, thereby constituting a fixed end to pull the sleeve assembly 30 to move.

[0049] In an optional embodiment, the connecting seat 12 is pre-buried in the tunnel segment 40, and the connecting seat 12 is integrated with the tunnel segment 40 as a pre-buried part. The connecting seat 12 is integrated with the tunnel segment 40, and is convenient to be detachably connected to the telescopic part 11.

[0050] Alternatively, the connecting seat 12 comprises a pre-buried plate and an adapter seat detachably connected to the pre-buried part. The pre-buried plate is arranged on the tunnel segment 40, and the adapter seat is connected to the telescopic part 11. Then, the adapter seat and the pre-buried plate are locked by fasteners, thereby facilitating the connection of the telescopic part 11 to the tunnel segment 40.

[0051] In an optional embodiment, the connecting seat 12 is cast to be connected to the tunnel segment 40. A ring beam is cast on the tunnel segment 40 around the area to be excavated in the main tunnel, and the connecting seat 12 is connected to the tunnel segment 40 as an integrated structure through the ring beam, thereby constituting a part of the tunnel segment 40. Alternatively, the connecting seat 12 is configured as a threaded hole seat or a threaded rod column.

[0052] In an optional embodiment, the connecting seat 12 is welded to the tunnel segment 40. The tunnel segment 40 in the area to be excavated is provided with a pre-buried part, or the tunnel segment 40 in the area to be excavated is made of a steel segment. The connecting seat 12 is welded to the tunnel segment 40, thereby constituting a fixed connection structure with high connection strength.

[0053] Alternatively, the anti-pulling assembly 10 directly pulls the sleeve assembly 30.

[0054] In an embodiment, the anti-pulling assembly 10 further comprises an adjusting frame 14, which is fixedly connected to the sleeve assembly 30 and protrudes along the radial direction of the sleeve assembly 30, and the telescopic part 11 is connected to the adjusting frame 14. The adjusting frame 14 constitutes a part of the protruding structure of the sleeve assembly 30, or the adjusting frame 14 is welded to the sleeve assembly 30, or the adjusting frame 14 is locked to the sleeve assembly 30 by fasteners.

[0055] The adjusting frame 14 is in the shape of a section steel or a U-shaped lug 13, and the adjusting frame 14 extends beyond the pipe wall of the sleeve assembly 30. Accordingly, the adjusting frame 14 has a large diameter, and the counter-pulling assembly 10 is connected to the adjusting frame 14, so as to adjust the swing range and sensitivity, and adjust the connection position and angle of the counter-pulling assembly 10, and improve the rationality of the spatial layout.

[0056] In an optional embodiment, the counter-pulling assembly 10 further comprises a lug 13 movably connected to the sleeve assembly 30. The lug 13 is mounted to one end of the telescopic member 11 to form a movable force bearing. The lug 13 is movably connected to the sleeve assembly 30, and the two form a hinged connection.

[0057] Preferably, the lug 13 is detachably connected to the adjusting frame 14 by fasteners, and the connection is convenient.

[0058] The bracket assembly 22 supports and defines the sleeve assembly 30. Optionally, the bracket assembly 22 is provided with an inner recessed positioning groove 2211 for defining the sleeve assembly 30. The positioning groove 2211 is recessed from the top surface to define the circumferential movement or end position of the sleeve assembly 30.

[0059] For example, the positioning groove 2211 is a concave arc-shaped curved surface, and the sleeve assembly 30 is arranged on the bracket assembly 22, so that the sleeve assembly 30 and the positioning groove 2211 are automatically corresponded and centered.

[0060] Preferably, one end of the positioning groove 2211 is provided with a protruding axial stop rib 2212 for defining the axial position of the sleeve assembly 30, and facilitating the initial positioning of the sleeve assembly 30.

[0061] In an embodiment, the bracket assembly 22 comprises two lifting beams 222 and a bottom bracket 221, and the lifting assembly 21 is mounted to the lifting beams 222. The two ends of each lifting beam 222 are spaced apart and mounted to the lifting assembly 21 to adjust the height of the lifting beam 222.

[0062] Optionally, the lifting assembly 21 comprises lifting oil cylinders, and part of the lifting oil cylinders are independently adjusted or jointly adjusted. The two lifting beams 222 are spaced apart, and correspondingly, the four lifting assemblies 21 are distributed in a rectangular shape. When the two lifting assemblies 21 on the same side are lowered, the central inclination angle of the sleeve assembly 30 can be adjusted. For example, on the horizontally installed sleeve assembly 30, the two lifting assemblies 21 located in the front and back directions of the center line of the sleeve assembly 30 are adjusted in height, so as to adjust the upward angle of the sleeve assembly 30. The two lifting assemblies 21 located in the left and right directions of the center line of the sleeve assembly 30 are adjusted in height, so as to adjust the edge alignment angle of the sleeve assembly 30 and the tunnel segment 40.

[0063] The bottom bracket 221 is arranged on the lifting beam 222, and the bottom bracket 221 and the lifting beam 222 are movably connected, the bottom bracket 221 can slide along the lifting beam 222, so that the sleeve assembly 30 and the bottom bracket 221 are slidably arranged on the lifting beam 222, and correspondingly, the plurality of lifting beams 222 are connected into a frame structure through connecting rods.

[0064] Optionally, the bottom bracket 221 and the lifting beam 222 are fixedly connected, and the sleeve assembly 30 is movably arranged on the bottom bracket 221. The counter-pulling assembly 10 drives the sleeve assembly 30 to work and adjust the posture. In particular, when a hole is opened at the top of the main tunnel for tunneling, the bottom bracket 221 lifts the sleeve assembly 30 to approach the area to be excavated, and the plurality of counter-pulling assemblies 10 jointly pull to adjust the suspension and angle of the sleeve assembly 30.

[0065] It should be understood that the application is not limited to the precise construction which has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made without departing from the scope thereof. The application is intended to cover any adaptations or variations of the present application following in the spirit of the application, and including such as come within the scope of the claims or the patent.

Claims

1. A sleeve back-pull adjustment mechanism for aligning a sleeve assembly with the area to be excavated during the construction of a side passage within the main tunnel, characterized in that, The sleeve reverse pull adjustment mechanism includes: A bracket device includes a bracket assembly and a lifting assembly mounted on the bracket assembly, the lifting assembly controlling the lifting height adjustment of the bracket assembly, and the bracket assembly being used to support a sleeve assembly; At least two anti-pull assemblies, one end of which is connected to a tunnel segment and the other end of which is connected to the sleeve assembly, so as to pull the sleeve assembly toward the area to be excavated.

2. The sleeve reverse pull adjustment mechanism according to claim 1, characterized in that, The plurality of the anti-pull components are symmetrically distributed with respect to the centerline of the sleeve assembly.

3. The sleeve reverse pull adjustment mechanism according to claim 1, characterized in that, The anti-pull assembly includes a connecting seat and a telescopic component. The connecting seat is connected to the tunnel segment, and the telescopic component is connected to the sleeve assembly. The telescopic component extends and retracts to adjust the posture of the sleeve assembly.

4. The sleeve reverse pull adjustment mechanism according to claim 3, characterized in that, The telescopic component uses a reverse-pull hydraulic cylinder.

5. The sleeve reverse pull adjustment mechanism according to claim 3, characterized in that, The anti-pull assembly also includes an adjustment frame, which is fixedly connected to the sleeve assembly and protrudes radially along the sleeve assembly, and the telescopic member is connected to the adjustment frame.

6. The sleeve reverse pull adjustment mechanism according to claim 3, characterized in that, The reverse pull assembly also includes an ear seat, which is movably connected to the sleeve assembly.

7. The sleeve reverse pull adjustment mechanism according to claim 3, characterized in that, The connecting seat is pre-embedded in the tunnel segment; or... The connecting seat is cast and connected to the tunnel segment; or... The connecting seat is welded to the tunnel segment.

8. The sleeve reverse pull adjustment mechanism according to claim 1, characterized in that, The bracket assembly has a recessed positioning groove for defining the sleeve assembly.

9. The sleeve reverse pull adjustment mechanism according to claim 1, characterized in that, The bracket assembly includes two lifting beams and a base bracket, with the lifting assembly mounted on the lifting beams; wherein... The base bracket slides on the lifting beam; or... The base bracket is fixedly connected to the lifting beam.

10. The sleeve reverse pull adjustment mechanism according to claim 1, characterized in that, The lifting assembly includes lifting cylinders, some of which can be adjusted independently or in combination.

11. The sleeve reverse pull adjustment mechanism according to claim 1, characterized in that, The excavation direction of the bypass passage is inclined relative to the horizontal plane; or, The excavation direction of the bypass passage is parallel to the horizontal plane; or, The excavation direction of the bypass is perpendicular to the horizontal plane.

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