CN210714704U - Shield starting counterforce device used in limited space - Google Patents
Shield starting counterforce device used in limited space Download PDFInfo
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- CN210714704U CN210714704U CN201921681426.2U CN201921681426U CN210714704U CN 210714704 U CN210714704 U CN 210714704U CN 201921681426 U CN201921681426 U CN 201921681426U CN 210714704 U CN210714704 U CN 210714704U
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Abstract
The utility model provides a shield constructs counter-force device that starts for in finite space, the device includes: the fixed support is provided with a first end and a second end used for being installed on the end face of the negative ring pipe piece; the movable support is provided with a connecting end and a butting end used for butting against the reaction wall, the connecting end is provided with a bearing jack arranged towards the butting end, and the first end of the fixed support is slidably arranged in the bearing jack; and the locking structure is detachably connected to the fixed support and the movable support. The utility model provides an because of the cross passage structure headroom size is not enough, can't use traditional reaction frame of starting, shield structure burden ring canal piece receive shield structure machine thrust effect after unable and the contact of the complete close contact of reaction wall, cause the in-process shield position clearance of starting to transfinite, the problem that the large tracts of land damage appears in the burden ring canal piece, fracture even.
Description
Technical Field
The utility model relates to a shield constructs construction technical field, concretely relates to shield that is used for in finite space constructs counter-force device that starts.
Background
At present, the construction and development of domestic subways are rapid, and the construction of the subway interval tunnels is mostly carried out by adopting a shield method. The shield construction technology is developed more mature in recent years, and compared with traditional underground excavation and open excavation, the shield construction has the characteristics of high construction speed, good quality of formed tunnels, low cost and the like. Generally, the shield machine is started by depending on a starting vertical shaft structure, a shield machine main body is hoisted to a vertical shaft, a tunnel door seal, a starting base and a starting counter-force frame are installed, and the shield machine can be started after being debugged. However, at present, the designed lines of the domestic subway are more parallel to urban main roads, and the ground traffic is influenced by directly excavating the traditional starting vertical shaft. At present, more and more designs are carried out by adopting a mode of combining a vertical shaft and a transverse passage, namely, an initial vertical shaft is excavated at the periphery of a main road, the transverse passage is excavated from the bottom of the initial vertical shaft to a shield design initial position, and a shield machine finishes initial starting in the transverse passage. The starting process basically cannot cause stagnation of ground traffic, a wider range is provided for selection of a starting place, but the starting of the shield machine in a transverse channel often causes that a traditional starting reaction frame cannot be normally used due to insufficient clearance size of a transverse channel structure, but thrust generated by digging of the shield machine directly acts on a side wall structure of the transverse channel and is influenced by the perpendicularity of the side wall of the transverse channel, a shield negative ring pipe piece is often not in complete close contact with a reaction wall (the side wall of the transverse channel) after being subjected to the thrust action of the shield machine, so that a shield position gap (a gap between the outer diameter of the pipe piece and the inner diameter of a shield shell) is over-limited in the starting process, the negative ring pipe piece is damaged or even broken in a large area, the starting reaction force cannot be completely transferred to the reaction wall, and starting failure is caused.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, a shield starting counterforce device used in a limited space is provided so as to solve the problems that due to the insufficient clearance size of a transverse passage structure, a traditional starting counterforce frame cannot be used, and a shield negative ring pipe piece cannot be in complete close contact with a counterforce wall after being pushed by a shield machine, the gap of a shield position is over-limited, and the negative ring pipe piece is damaged in a large area or even broken in the starting process.
To achieve the above object, there is provided a shield originating counterforce apparatus for use in a limited space, comprising:
the fixed support is provided with a first end and a second end used for being installed on the end face of the negative ring pipe piece;
the movable support is provided with a connecting end and a butting end used for butting against the reaction wall, the connecting end is provided with a bearing jack arranged towards the butting end, and the first end of the fixed support is slidably arranged in the bearing jack; and
and the locking structure is detachably connected to the fixed support and the movable support.
Further, the outside of fixing support's first end is formed with first flange board, be formed with second flange board in the bell and spigot hole, the second flange board is located the orientation of first flange board one side of fixing support's second end, the lock solid structure drawknot in first flange board with between the second flange board.
Further, the locking structure includes:
the first end of the tie rod is connected to the first flange plate, the second flange plate is provided with a first through hole, the tie rod penetrates through the first through hole, and the second end of the tie rod extends to one side, far away from the first flange plate, of the second flange plate; and
and the position of the limiting part for abutting against the second flange plate is adjustably arranged at the second end of the drawknot rod.
Furthermore, a second through hole is formed in the first flange plate, the first end of the tie rod movably penetrates through the first through hole and extends to one side of the first flange plate, which is far away from the second flange plate, and a boss used for abutting against one side of the first flange plate, which is far away from the second flange plate, is formed at the first end of the tie rod.
Further, fixing support is cylindricly, the second flange board is followed the inner wall of socket sets up the round, the second flange board with be formed with first space between fixing support's the outer wall.
Furthermore, a second gap is formed between the inner wall of the first through hole and the outer wall of the drawknot rod.
Furthermore, the number of the first through holes is multiple, and the first through holes are distributed at intervals along the inner edge of the second flange plate.
Further, the outer diameter of the abutting end of the movable support is gradually enlarged towards the outer side of the movable support.
Furthermore, a screw rod used for connecting a bolt hole on the end face of the negative ring segment is formed at the second end of the fixed support.
The beneficial effects of the utility model reside in that, the utility model discloses a shield for in finite space starts counterforce device, because of shield structure lateral passage structure headroom size is not enough, can't use traditional reaction frame of starting, will this shield construct the counterforce strutting arrangement of starting and install between negative ring section of jurisdiction and counterforce wall, after the adjustment shield constructs the length of starting counterforce strutting arrangement, construct the length that starts counterforce strutting arrangement through the fixed shield of lock solid structure, make the shield construct the counterforce strutting arrangement of starting support between counterforce wall and shield structure negative ring pipe piece, make the shield structure negative ring section of jurisdiction receive shield structure machine thrust effect back and counterforce wall contact of hugging closely completely, and then make the shield position clearance between negative ring section of jurisdiction and the shield structure be in normal range, the protection negative ring section of jurisdiction is not crushed.
Drawings
Fig. 1 is a schematic structural diagram of a shield starting counterforce device used in a limited space according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view of a shield originating counterforce device for use in a confined space in accordance with an embodiment of the present invention.
Fig. 3 is a cross-sectional view taken at a-a in fig. 2.
Fig. 4 is a schematic diagram of a shield starting counterforce device used in a limited space according to an embodiment of the present invention, which is used for a counterforce wall with poor perpendicularity.
Fig. 5 is a schematic structural view of a terminal surface of a negative ring segment according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
Fig. 1 is the utility model discloses a shield for in finite space constructs the structure sketch map of originating counterforce device, fig. 2 is the utility model discloses a shield for in finite space constructs the cross-sectional view of originating counterforce device, fig. 3 is the cross-sectional view of A-A department in fig. 2, fig. 4 is the utility model discloses a shield for in finite space constructs the schematic diagram that originates counterforce device is used for the relatively poor counterforce wall of straightness, fig. 5 is the utility model discloses a structure sketch map of the terminal surface of negative ring section of jurisdiction.
Referring to fig. 1 to 5, the present invention provides a shield launching counterforce apparatus for use in a limited space, including: the device comprises a fixed support 1, a movable support 2 and a locking structure 3.
Specifically, the fixed support 1 has a first end and a second end for mounting on the end surface of the negative ring segment 4. The movable support 2 has an opposite connection end and an abutting end for abutting against the counterforce wall 5. The connecting end of the movable support 2 is provided with a socket hole 20 arranged towards the abutting end of the movable support 2. The first end of the fixed support 1 is slidably arranged in the socket hole 20. The locking structure 3 is detachably connected to the fixed support 1 and the movable support 2. The locking structure 3 is used for locking the movable support between the fixed support and the reaction wall and fixing the length of the shield starting reaction supporting device.
The utility model discloses a shield for in finite space constructs counter-force device that starts, because of the shield constructs the lateral passage structure headroom size not enough, can't use traditional reaction frame that starts, it installs this shield to construct the counter-force strutting arrangement that starts between negative ring section of jurisdiction and counter-force wall, after the adjustment shield constructs the length of starting counter-force strutting arrangement, through the fixed shield of lock solid structure the length of starting counter-force strutting arrangement, make the shield construct the counter-force strutting arrangement that starts and support between counter-force wall and shield structure negative ring pipe piece, make the shield construct the negative ring section of jurisdiction receive shield construct the machine thrust effect back with the contact of the complete hugging of counter-force wall, and then make the shield position clearance between negative ring section of jurisdiction and the shield construct be in normal range, the protection negative ring.
In the present embodiment, the first end of the fixing mount 1 is externally formed with a first flange plate 11. The first flange plate is arranged in a circle along the outer edge of the first end of the fixed support. A second flange plate 21 is formed on the inner wall of the receptacle hole 20. The second flange plate is provided with a circle along the inner wall of the socket hole and is annular. The second flange plate 21 is located on the side of the first flange plate 11 facing the second end of the fixing mount 1. The locking structure 3 is pulled between the first flange plate 11 and the second flange plate 21.
As a preferred embodiment, the locking structure 3 includes a tie bar 31 and a limiting member 32.
In particular, a first end of the tie rod 31 is connected to the first flange plate 11. The second flange plate 21 is formed with a first through hole. The tie bar 31 is disposed through the first through hole, and a second end of the tie bar 31 extends to a side of the second flange plate 21 away from the first flange plate 11. The position-limiting piece 32 is arranged at the second end of the drawknot rod 31 in a position-adjustable manner. The limiting member 32 is abutted by the second flange plate 21.
Furthermore, the first flange plate 11 is provided with a second through hole aligned with the first through hole. The first end of the tie rod 31 movably penetrates through the first through hole and extends to a side of the first flange plate 11 away from the second flange plate 21. A first end of the drawknot rod 31 is formed with a boss 3. The boss 3 is intended to abut against the side of the first flange plate remote from the second flange plate 21.
In this embodiment, a threaded through hole is formed inside the limiting member, an external thread is formed outside the tie rod, and the tie rod is threadedly connected to the threaded through hole of the limiting member.
In a preferred embodiment, the tie rod is a high strength bolt rod.
In this embodiment, the fixed support 1 is cylindrical, and the second flange plate 21 of the movable support is arranged along the inner wall of the socket hole 20. A first gap a is formed between the second flange plate 21 and the outer wall of the fixing mount 1. A second gap b is formed between the inner wall of the first through hole and the outer wall of the drawknot rod 31.
The number of the first through holes is multiple. A plurality of first through holes are arranged at intervals along the inner edge of the second flange plate 21.
As shown in fig. 3 and 4, due to the existence of the first gap a and the second gap b, when the verticality of the reaction wall is poor, the movable support is in the first gap and the tie rod is in the second gap to generate a universal head effect similar to a hinge joint, so that the fixed support can be tightly attached to the reaction wall, and the negative ring pipe piece can uniformly transfer force to the reaction wall, and the reaction wall is suitable for tunnels with various sections.
In a preferred embodiment, the fixing support is a cylinder. The movable support is a square sleeve. One end of the square sleeve is closed, and a second flange plate is formed on the inner wall of the other end of the square sleeve. Furthermore, the movable support is a high-strength steel sleeve. The fixed support is a high-strength steel core pipe.
In the present embodiment, the outer diameter of the butt end of the cradle 2 gradually expands toward the outside of the cradle 2. The abutting end of the movable support 2 is horn-shaped, and the horn mouth is arranged outwards.
In order to firmly connect the fixing support to the negative ring pipe piece, the second end of the fixing support 1 is formed with a screw 12 for connecting a bolt hole of the end surface of the negative ring pipe piece 4.
The utility model also provides a counter-force support method that is used for the shield of limited space to originate counterforce device, including following step.
S1, after the shield machine is separated from the negative ring pipe piece 4, the fixed supports 1 of the plurality of shield starting reaction force supporting devices are respectively installed on the end surface of the negative ring pipe piece 4, so that the plurality of shield starting reaction force supporting devices are annularly arranged.
And S2, adjusting the lengths of all the shield launching counterforce supporting devices to be consistent.
Specifically, thrust towards the negative ring pipe piece is applied to the movable support until the length of the shield starting counter-force supporting device is adjusted to be the shortest, at the moment, the movable support is temporarily and movably connected with the fixed support, and the locking structure is not installed in place.
And S3, after the lengths of all the shield starting reaction force supporting devices are adjusted to be consistent, the shield machine continues to tunnel and pushes out the negative ring pipe piece 4 backwards, and after the abutting end of one movable support 2 touches the reaction force wall 5, the lengths of the rest shield starting reaction force supporting devices are adjusted, so that all the abutting ends abut against the reaction force wall 5.
Specifically, after the lengths of all the shield starting counter-force supporting devices are adjusted to be consistent, the shield machine continues to tunnel and pushes the negative ring pipe piece 4 backwards.
When the abutting end of one movable support 2 touches the reaction wall 5, a pulling force towards the reaction wall is applied to the rest movable supports, so that the abutting ends of the rest movable supports abut against the reaction wall.
As shown in fig. 4, when the wall surface of the reaction wall is relatively poor in verticality, after the pulling force towards the reaction wall is applied to the rest movable support, since the first gap is formed between the second flange plate and the outer wall of the fixed support and the second gap is formed between the inner wall of the first through hole and the outer wall of the tie rod, the abutting end of the movable support is completely and tightly attached to the reaction wall, so that the axis of the movable support and the axis of the fixed support are arranged at an angle. By utilizing the first gap and the second gap, the negative ring pipe piece is tightly supported on the reaction wall through the shield starting reaction supporting device, and the movable support and the fixed support are ensured to have certain hinged adjusting effect when the reaction wall is not vertical.
And S4, after all the abutting ends abut against the reaction wall 5, all the locking structures 3 are connected to the fixed support 1 and the movable supports 2, so that all the movable supports 2 are locked between the reaction wall 5 and the fixed support 1.
After the abutting ends of the rest movable supports are abutted against the counterforce wall, all the locking structures are correspondingly arranged between the fixed support and the movable supports respectively.
Specifically, the limiting member is screwed to the second end of the tie rod in the first through hole and the second through hole of the tie rod, so that the limiting member abuts against the second flange plate, and the movable support is locked between the reaction wall and the fixed support.
A circle of shield starting counter-force supporting device is arranged between the end face of the negative ring pipe piece and the counter-force wall, the negative ring pipe piece can be connected with the counter-force wall through multiple contact points, and the influence of the perpendicularity difference of the counter-force wall is further weakened. The shield starting counter-force supporting devices in the circle can adjust the length according to the actual distance between the negative ring pipe piece and the counter-force wall, and the influence of the perpendicularity difference of the counter-force wall is guaranteed to be offset.
It should be noted that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the efficacy and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
The present invention has been described in detail with reference to the embodiments shown in the drawings, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the present invention, which are intended to be limited only by the scope of the appended claims.
Claims (9)
1. A shield launch counterforce apparatus for use in confined spaces, comprising:
the fixed support is provided with a first end and a second end used for being installed on the end face of the negative ring pipe piece;
the movable support is provided with a connecting end and a butting end used for butting against the reaction wall, the connecting end is provided with a bearing jack arranged towards the butting end, and the first end of the fixed support is slidably arranged in the bearing jack; and
and the locking structure is detachably connected to the fixed support and the movable support.
2. The shield starting reaction device for the limited space of claim 1, wherein a first flange plate is formed outside the first end of the fixed support, a second flange plate is formed in the socket hole, the second flange plate is located on one side of the first flange plate facing the second end of the fixed support, and the locking structure is tied between the first flange plate and the second flange plate.
3. The shield starting counterforce apparatus for use in a confined space of claim 2, wherein said locking structure comprises:
the first end of the tie rod is connected to the first flange plate, the second flange plate is provided with a first through hole, the tie rod penetrates through the first through hole, and the second end of the tie rod extends to one side, far away from the first flange plate, of the second flange plate; and
and the position of the limiting part for abutting against the second flange plate is adjustably arranged at the second end of the drawknot rod.
4. The shield launching counterforce device for a limited space of claim 3, wherein the first flange plate is provided with a second through hole, the first end of the tie rod movably penetrates through the first through hole and extends to a side of the first flange plate far away from the second flange plate, and the first end of the tie rod is formed with a boss for abutting against a side of the first flange plate far away from the second flange plate.
5. The shield starting reaction device for use in a confined space of claim 3 wherein said anchor support is cylindrical, said second flange plate is disposed in a circle along an inner wall of said socket hole, and a first gap is formed between said second flange plate and an outer wall of said anchor support.
6. The shield starting counterforce apparatus for limited space of claim 5, wherein a second gap is formed between an inner wall of the first through hole and an outer wall of the tie rod.
7. The shield launching counterforce device for use in a limited space of claim 5, wherein the number of the first through holes is plural, and the plural first through holes are arranged at intervals along the inner edge of the second flange plate.
8. The shield starting reaction device for use in a confined space of claim 2 wherein the abutment end of the travelling support has an outer diameter that gradually enlarges towards the outside of the travelling support.
9. The shield starting reaction device for the limited space according to claim 1, wherein the second end of the fixing mount is formed with a screw for connecting a bolt hole of the end face of the negative ring segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921681426.2U CN210714704U (en) | 2019-10-09 | 2019-10-09 | Shield starting counterforce device used in limited space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921681426.2U CN210714704U (en) | 2019-10-09 | 2019-10-09 | Shield starting counterforce device used in limited space |
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| Publication Number | Publication Date |
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| CN210714704U true CN210714704U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921681426.2U Active CN210714704U (en) | 2019-10-09 | 2019-10-09 | Shield starting counterforce device used in limited space |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529129A (en) * | 2019-10-09 | 2019-12-03 | 中建八局轨道交通建设有限公司 | For the shield launching counter-force support device and counter-force method for supporting in narrow space |
-
2019
- 2019-10-09 CN CN201921681426.2U patent/CN210714704U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529129A (en) * | 2019-10-09 | 2019-12-03 | 中建八局轨道交通建设有限公司 | For the shield launching counter-force support device and counter-force method for supporting in narrow space |
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