CN217813513U

CN217813513U - Support frame for shield tunnel

Info

Publication number: CN217813513U
Application number: CN202222082708.9U
Authority: CN
Inventors: 马文帅; 杨帅; 张瑜; 单昱桥; 毕洪超
Original assignee: China Railway 19th Bureau Group Co Ltd; Rail Transit Engineering Co Ltd of China Railway 19th Bureau Group Co Ltd
Current assignee: China Railway 19th Bureau Group Co Ltd; Rail Transit Engineering Co Ltd of China Railway 19th Bureau Group Co Ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2022-11-15
Anticipated expiration: 2032-08-09

Abstract

The utility model belongs to the technical field of engineering, in particular to a support frame for a shield tunnel, which comprises a support mechanism; a pressing mechanism is installed on the inner side of the supporting mechanism, an auxiliary supporting mechanism is fixed at one end of the pressing mechanism, and a pressure supporting mechanism is installed on the bottom side in the supporting mechanism; the supporting mechanism comprises a circular shell, the circular shell is connected with each other through clamping tenons, a mounting seat is fixed to the bottom side inside the circular shell, a supporting table is fixed to the top side of the mounting seat, a protruding block is fixed to the top side inside the circular shell, a supporting rod is installed on the protruding block, a fixing seat is fixed to the bottom side of the supporting rod, the inner wall of the tunnel is supported through the circular shell, the supporting table and the supporting rod support the inside of the circular shell respectively, supporting force of the auxiliary supporting mechanism is adjusted through an adjusting mechanism to support the tunnel in an auxiliary mode, heavy pressure of vehicles and the like is supported through a pressure supporting mechanism, and the problem that muck cannot be transported out in time and the tunneling speed is affected is solved.

Description

Support frame for shield tunnel

Technical Field

The utility model relates to the technical field of engineering, specifically a support frame for shield tunnel.

Background

The shield tunneling machine is a special engineering machine for tunneling a tunnel, and is used for supporting tunnel arms excavated around a tunnel to prevent collapse in the tunnel when the shield tunneling machine cuts soil and excavates the tunnel.

Support frame for shield tunnel on the market uses a plurality of bottom plates, a plurality of support columns, fixed plate usually, advances to support the tunnel wall, through set up buffer gear on the support column, cushions its impact that receives, prevents that the tunnel inner wall from taking place to collapse.

The supporting and buffering effects are achieved through the multiple parts, the problems still exist in the use process, vehicles need to pass in and out of the tunnel to transport dregs outwards along with the increase of the tunneling length of the tunnel, and the safe passing of personnel needs to be kept.

SUMMERY OF THE UTILITY MODEL

In order to compensate for the deficiencies of the prior art, the utility model provides a support frame for shield tunnel.

The utility model provides a technical scheme that its technical problem adopted is: the utility model relates to a supporting frame for a shield tunnel, which comprises a supporting mechanism; the inner side of the supporting mechanism is provided with a pressing mechanism, one end of the pressing mechanism is fixedly provided with an auxiliary supporting mechanism, and the supporting mechanism is internally provided with a pressure supporting mechanism at the bottom side.

Preferably, the supporting mechanism comprises a circular shell, the circular shell is connected with each other through a clamping tenon, a mounting seat is fixed on the bottom side inside the circular shell, a supporting table is fixed on the top side of the mounting seat, a protruding block is fixed on the top side inside the circular shell, a supporting rod is installed on the protruding block, a fixing seat is fixed on the bottom side of the supporting rod, the circular shell is used, the bearing capacity is more excellent, and the circular shell can bear larger load under the same performance.

Preferably, the auxiliary supporting mechanism comprises a fixed seat, two sliding rods are fixed to two sides of the fixed seat respectively, a first spring is sleeved on each sliding rod respectively, two sleeves are slidably mounted on the sliding rods respectively, one end of each first spring is fixed to each sleeve, the other end of each first spring is fixed to the side face of the fixed seat, each sleeve is rotatably mounted at one end of each supporting arm, each spring is used, and the auxiliary supporting mechanism is low in cost and has the advantages of being easy to deform and large in elasticity.

Preferably, adjustment mechanism is including solid fixed ring, gu fixed ring one side is fixed with the threaded rod, it installs the nut to rotate on the threaded rod, threaded rod one end cover is equipped with hollow section of thick bamboo, the support arm side is fixed with hollow section of thick bamboo, the support arm rotates through the round pin axle cooperation and connects on a supporting bench top side, gu fixed ring suit uses the threaded rod in circular shell both sides trip department, has the auto-lock ability, simple structure, not fragile, accessible swivel nut removes the support arm position, adjusts its holding power.

Preferably, the pressure supporting mechanism comprises a pressing table, a second spring is fixed on the bottom side of the pressing table, a fixed table is fixed on the bottom side of the inside of the circular shell, long metal rods and short metal rods are respectively installed on the bottom side of the pressing table, the long metal rods and the short metal rods are installed on the fixed table in an inserting mode, the pressing table located in the middle position is provided with two long metal rods, the pressing tables on two sides of the bottom of the circular shell are provided with the short metal rods at two ends respectively, and the metal rods have certain elasticity, low cost and are not prone to damage when the supporting area is increased.

The utility model discloses an useful part lies in:

1. the utility model discloses a structural design of support frame for shield tunnel, through setting up supporting mechanism and supplementary supporting mechanism, support the tunnel inner wall through circular housing, brace table and bracing piece support circular housing is inside respectively, and can receive when great impact at a certain part of circular housing, make the support arm pass through the sleeve and slide on the slide bar, through support arm compression or tensile first spring, disperse whole mechanism with the impact force, make whole mechanism not fragile, and reserve sufficient current space, personnel and the unable entering of vehicle have been solved, lead to that dregs can't arrive the problem of seeing off when reaching, influence the shield and dig in speed.

2. The utility model discloses a structural design of support frame for shield tunnel, through setting up adjustment mechanism and pressure bearing structure, the nut rotates, promote hollow section of thick bamboo, make the support arm remove, the support arm passes through the first spring of sleeve compression and slides on the slide bar, adjust the holding power of support arm level and vertical direction, when constructor and vehicle pass through, press the platform through a supporting bench push down, long metal pole and the short metal pole release between will pressing platform and the fixed station, make the metal pole contact circular shell, improve the holding power to a supporting bench, make constructor and vehicle can pass through safely, later second spring draws back long metal pole and short metal pole, make the dregs can in time be transported out.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is a schematic overall front perspective structure of the first embodiment;

FIG. 2 is a schematic perspective view of the overall structure according to the first embodiment;

FIG. 3 is a sectional view of the overall front perspective structure of the first embodiment;

FIG. 4 is a sectional view of the auxiliary supporting mechanism according to the first embodiment;

fig. 5 is an overall front perspective structural diagram of the second embodiment.

In the figure: 1. a circular housing; 2. clamping tenons; 3. a support table; 4. a mounting seat; 5. a support arm; 6. a support bar; 7. a hollow cylinder; 8. a fixing ring; 9. a threaded rod; 10. a nut; 11. a fixed seat; 12. a slide bar; 13. a first spring; 14. a sleeve; 15. pressing the table; 16. a second spring; 17. a long metal rod; 18. A fixed table; 19. a short metal rod; 20. a bump; 21. provided is a protective net.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example one

Referring to fig. 1-4, a support frame for a shield tunnel includes a support mechanism; the tunnel supporting device is characterized in that a pressing mechanism is installed on the inner side of the supporting mechanism, an auxiliary supporting mechanism is fixed at one end of the pressing mechanism, a pressure supporting mechanism is installed on the inner side of the supporting mechanism and located at the bottom side of the supporting mechanism, the supporting mechanism directly supports a tunnel during working, the auxiliary supporting mechanism carries out auxiliary supporting on the tunnel, a regulating mechanism is used for regulating supporting force of the auxiliary supporting mechanism, and the pressure supporting mechanism supports constructors and vehicles entering the tunnel.

The supporting mechanism comprises a circular shell 1, the circular shell 1 is connected with each other through a clamping tenon 2, a mounting seat 4 is fixed on the bottom side inside the circular shell 1, a supporting table 3 is fixed on the top side of the mounting seat 4, a convex block 20 is fixed on the top side inside the circular shell 1, a supporting rod 6 is installed on the convex block 20, a fixed fixing seat 11 is arranged on the bottom side of the supporting rod 6, and when the supporting mechanism works and the tunnel is prone to collapse after excavation, the supporting mechanism supports the inner wall of the tunnel through the circular shell 1, and the supporting table 3 and the supporting rod 6 support the inside of the circular shell 1 respectively.

The auxiliary supporting mechanism comprises a fixed seat 11, two sliding rods 12 and two sliding rods 12 are fixed on two sides of the fixed seat 11 respectively, first springs 13 and two are sleeved on the sliding rods 12 respectively, sleeves 14 are mounted on the sliding rods 12 respectively in a sliding mode, one ends of the first springs 13 are fixed on the sleeves 14, the other ends of the first springs 13 are fixed on the side faces of the fixed seat 11, the sleeves 14 are rotatably mounted at one ends of supporting arms 5, hollow cylinders 7 are fixed on the side faces of the supporting arms 5, the supporting arms 5 are rotatably connected to the top sides of supporting tables 3 through pin shafts in a matched mode, the fixing rings 8 are sleeved on clamping tenons 2 on two sides of the circular shell 1, and when the auxiliary supporting mechanism works, impact force is dispersed to the whole mechanism through the structures of the auxiliary supporting mechanism when the supporting arms easily break when a part of the circular shell 1 is subjected to large impact and the supporting arms 5 compress or stretch the first springs 13, so that the whole mechanism is not easily damaged.

Adjustment mechanism is including solid fixed ring 8, gu fixed ring 8 one side is fixed with threaded rod 9, threaded rod 9 is last to rotate and to install

nut

10, 9 one end covers of threaded rod are equipped with hollow section of thick bamboo 7, and the during operation when meetting the problem that the support frame atress changes and lead to the damage, through adjustment mechanism's structure, through rotating nut 10, promote hollow section of thick bamboo 7, make support arm 5 rotate, change support arm 5 to the holding power of 1 level of circular housing and vertical direction.

The pressure supporting mechanism comprises a pressing table 15, a second spring 16 is fixed on the bottom side of the pressing table 15, a fixing table 18 is fixed on the bottom side of the inner portion of the circular shell 1, long metal rods 17 and short metal rods 19 are respectively installed on the bottom side of the pressing table 15, the long metal rods 17 and the short metal rods 19 are installed on the fixing table 18 in an inserting mode, two long metal rods 17 are installed on the bottom side of the pressing table 15 located in the middle position, the short metal rods 19 are installed at two ends of the pressing table 15 on two sides of the bottom of the circular shell 1 respectively, and when the pressure supporting mechanism works and a vehicle enters a problem that a supporting frame is damaged, the long metal rods 17 and the short metal rods 19 between the pressing table 15 and the fixing table 18 are pushed out through the structure of the pressure supporting mechanism when the vehicle passes through the supporting table 3, so that the metal rods are in contact with the circular shell 1 to support the supporting function, and after the vehicle passes through the supporting table, the second spring 16 pulls the long metal rods 17 and the short metal rods 19 back, and the problem that personnel and the vehicle cannot enter the shield, so that muck cannot be transported out and the shield tunneling speed is affected is solved.

Example two

Referring to fig. 5, as another embodiment of the present invention, in a first comparative example, a protective net 21 is installed on a side surface of a pressure support mechanism at a bottom side of the circular housing 1; during operation, the protection net 21 isolates gravels and sand outside the pressure supporting mechanism, and prevents the gravels from falling into the space between the second springs 16, so that the pressing platform 15 and the fixing platform 18 cannot be compressed and damaged.

The working principle of the tunnel boring machine is characterized in that the tunnel boring machine is a shield tunnel boring machine, the shield boring machine cuts soil, in the process of boring a tunnel, the excavated tunnel around needs to be supported to prevent collapse in the tunnel, a support frame for the shield tunnel on the market does not have a reserved space, a constructor cannot enter and exit, muck cannot be conveyed out in time, by arranging a support mechanism and an auxiliary support mechanism, when the tunnel boring machine is used, a circular shell 1 is connected and installed on the inner wall of the tunnel through a clamping tenon 2, the inner wall of the tunnel is supported through the circular shell 1, a support table 3 and a support rod 6 respectively support the inside of the circular shell 1, a hollow cylinder 7 is pushed by rotating a nut 10 to enable the support arm 5 to rotate, the support arm 5 slides on a sliding rod 12 through a sleeve 14 to compress a first spring 13, the support force in the horizontal and vertical directions of the support arm 5 is adjusted to prevent collapse of the tunnel, when a certain part of the circular shell 1 is impacted greatly, the first spring 13 is compressed or stretched by the support arm 5 to disperse to the whole mechanism, when the constructor presses the support arm 3 and the metal support table 3, the metal support table 15 and the metal support table 17, the metal support table is pushed out, the metal rod can be pushed out, the problem that the metal can not be solved, the problem that the metal can not be pushed out by the metal that the metal can not be pushed out by the metal support table 17 and the metal support table 19 and the metal support table 15 and the metal support table 17 can be pushed out.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the basic principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a support frame for shield tunnel which characterized in that: comprises a supporting mechanism; a pressing mechanism is installed on the inner side of the supporting mechanism, an auxiliary supporting mechanism is fixed at one end of the pressing mechanism, and a pressure supporting mechanism is installed on the bottom side in the supporting mechanism;

the supporting mechanism comprises a circular shell (1), the circular shell (1) is connected with each other through a clamping tenon (2), a mounting seat (4) is fixed to the bottom side inside the circular shell (1), a supporting table (3) is fixed to the top side of the mounting seat (4), a bump (20) is fixed to the top side inside the circular shell (1), a supporting rod (6) is installed on the bump (20), and a fixing seat (11) is fixed to the bottom side of the supporting rod (6).

2. The support frame for the shield tunnel according to claim 1, characterized in that: the auxiliary supporting mechanism comprises a fixed seat (11), two sliding rods (12) are respectively fixed to two sides of the fixed seat (11), a first spring (13) is sleeved on each sliding rod (12) in a sleeved mode, a sleeve (14) is slidably mounted on each sliding rod (12), one end of each first spring (13) is fixed to each sleeve (14), the other end of each first spring (13) is fixed to the side face of the fixed seat (11), and each sleeve (14) is rotatably mounted at one end of each supporting arm (5).

3. The support frame for the shield tunnel according to claim 2, characterized in that: hold-down mechanism is including solid fixed ring (8), gu fixed ring (8) one side is fixed with threaded rod (9), rotate on threaded rod (9) and install nut (10), threaded rod (9) one end cover is equipped with hollow section of thick bamboo (7).

4. The support frame for the shield tunnel according to claim 3, characterized in that: the pressure supporting mechanism comprises a pressing table (15), a second spring (16) is fixed on the bottom side of the pressing table (15), a fixing table (18) is fixed on the bottom side of the interior of the circular shell (1), a long metal rod (17) and a short metal rod (19) are respectively installed on the bottom side of the pressing table (15), and the long metal rod (17) and the short metal rod (19) are installed on the fixing table (18) in an inserting mode.

5. The support frame for the shield tunnel according to claim 4, characterized in that: two long metal rods (17) are installed on the bottom side of the pressing table (15) located in the middle of the circular shell (1), and short metal rods (19) are installed at two ends of the pressing table (15) on two sides of the bottom of the circular shell (1) respectively.

6. The support frame for the shield tunnel according to claim 5, characterized in that: support arm (5) side is fixed with hollow cylinder (7), support arm (5) rotate through the round pin axle cooperation and connect in brace table (3) top side, solid fixed ring (8) suit is in circular shell (1) both sides trip (2) department.