CN218971203U - Shield segment tensioning device with adjustable tensioning force - Google Patents
Shield segment tensioning device with adjustable tensioning force Download PDFInfo
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- CN218971203U CN218971203U CN202222987622.0U CN202222987622U CN218971203U CN 218971203 U CN218971203 U CN 218971203U CN 202222987622 U CN202222987622 U CN 202222987622U CN 218971203 U CN218971203 U CN 218971203U
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- steel wire
- tensioning device
- tensioning force
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Abstract
The utility model discloses a shield segment tensioning device with adjustable tensioning force, which belongs to the technical field of subway tunnel shield construction equipment and comprises a plurality of segment lifting heads screwed into segment lifting holes of a plurality of adjacent shield segments, fixed pulleys are fixedly arranged at the tops of the segment lifting heads, and steel wire ropes connected end to end are wound between the fixed pulleys. According to the utility model, through the cooperation of the fixed pulley and the steel wire rope, the pulling force of the wire drawing generator can be adjusted through screwing up the wire stretcher under the limiting effect of the limiter on the steel wire rope, and whether the pulling force data are matched or not is rapidly judged through the chest expander, and the tensioning force between any two rings of shield segments can be rapidly quantitatively adjusted through the segment hoisting heads arranged in a plurality of groups, so that the loosening between specific segments can be timely adjusted, and the phenomena of loosening and water leakage in the construction process are reduced.
Description
Technical Field
The utility model belongs to the technical field of subway tunnel shield construction equipment, and particularly relates to a shield segment tensioning device capable of adjusting tensioning force.
Background
In the shield construction of urban subway tunnels, the segments at the positions of shield segments close to the tunnel portal cannot provide enough pressure to enable the segments to be pressed tightly in a waterproof manner before the tunnel portal ring beam is not constructed, and a segment tensioning device is generally required to be additionally arranged on the segments of the originating segment and the receiving segment so as to prevent loosening between segments of the originating segment;
the existing loop forming pipe tensioning device adopts a channel steel, the end head of the channel steel is welded with an end splicing head, the end splicing head is then screwed on a lifting opening on the inner cambered surface of a first loop forming pipe, the tail part of the channel steel is welded with a tail splicing head, and the tail splicing head is then screwed on the lifting opening on the inner cambered surface of a tenth loop forming pipe to form tensioning and fixing of the first to tenth loop forming pipes;
the fastening method can only limit loosening among the segments, cannot realize tensioning of the first to tenth annular segments, cannot realize quantitative adjustment of tensioning force, cannot timely adjust the tensioning force of the segments when loosening occurs among the segments, and enables loosening and water leakage to occur easily among the segments, so that there is room for improvement.
Disclosure of Invention
The utility model aims at: in order to solve the problem that tensioning force can not be adjusted due to the fact that tensioning of the first to tenth annular duct pieces can not be achieved, the shield duct piece tensioning device capable of adjusting tensioning force is provided.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the shield segment tensioning device comprises a plurality of segment lifting heads screwed into segment lifting holes of a plurality of adjacent shield segments, wherein fixed pulleys are fixedly arranged at the tops of the segment lifting heads, and steel wire ropes connected end to end are wound between the fixed pulleys;
the fixed pulleys positioned in the middle of the shield segments are fixedly provided with limiters, and the steel wire ropes are arranged in the limiters at the corresponding positions in a penetrating way;
and the steel wire rope positioned at the rear side of the stroke of the limiter is sequentially penetrated and connected with a chest expander and a tightener.
As a further description of the above technical solution:
the chest expander is an electronic chest expander with a data transmission function.
As a further description of the above technical solution:
the tightener is a basket bolt or a ratchet double-hook tightener.
As a further description of the above technical solution:
the steel wire rope is wound by 180 degrees in an up-down staggered way outside the fixed pulley positioned in the middle.
As a further description of the above technical solution:
the steel wire rope is transversely positioned outside the fixed pulley at the end part and is wound at 90 degrees.
As a further description of the above technical solution:
the pipe piece hoisting head and the pipe piece hoisting hole are in threaded fit.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
1. according to the utility model, through the cooperation of the fixed pulley and the steel wire rope, the pulling force of the wire drawing generator can be adjusted through screwing up the wire stretcher under the limiting effect of the limiter on the steel wire rope, and whether the pulling force data are matched or not is rapidly judged through the chest expander, and the tensioning force between any two rings of shield segments can be rapidly quantitatively adjusted through the segment hoisting heads arranged in a plurality of groups, so that the loosening between specific segments can be timely adjusted, and the phenomena of loosening and water leakage in the construction process are reduced.
2. In the utility model, when the subway shield tunnel is constructed, the tension value between the segments can be observed in real time through the electric tension machine, and the data acquisition capacity is further improved after the data is accessed into the shield information system.
Drawings
FIG. 1 is a schematic diagram of a front view structure of a shield segment tensioning device with adjustable tensioning force;
fig. 2 is a schematic top view structure of a shield segment tensioning device with adjustable tensioning force according to the present utility model;
fig. 3 is a schematic diagram of a fixed pulley combined structure of a shield segment tensioning device with adjustable tensioning force.
Legend description:
1. a fixed pulley; 2. a segment hoisting head; 3. a wire rope; 4. a tightener; 5. a chest expander; 6. and a limiter.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, the present utility model provides a technical solution: the shield segment tensioning device with adjustable tensioning force comprises a plurality of segment lifting heads 2 screwed into segment lifting holes of a plurality of adjacent shield segments, fixed pulleys 1 are fixedly arranged at the tops of the segment lifting heads 2, and steel wire ropes 3 connected end to end are wound between the fixed pulleys 1;
the fixed pulleys 1 positioned in the middle of the shield segments are fixedly provided with limiters 6, and the steel wire ropes 3 are arranged in the limiters 6 at the corresponding positions in a penetrating way;
the wire rope 3 positioned at the rear side of the stroke of the limiter 6 is sequentially penetrated and connected with a chest expander 5 and a tightener 4;
the tightener 4 can be a turnbuckle or a ratchet double-hook tightener 4, and is selected automatically according to tightening tension;
in one embodiment, the steel wire ropes 3 are vertically staggered and wound for 180 degrees outside the fixed pulleys 1 positioned in the middle, so that the friction force between the steel wire ropes 3 and the fixed pulleys 1 can be effectively improved, the tensioning processing capacity of the adjacent pipe pieces on two sides of the position is determined when the steel wire ropes 3 between the adjacent fixed pulleys 1 are shortened, the tension adjusting effect on the shield pipe pieces during tension adjustment is improved, meanwhile, the steel wire ropes 3 are transversely wound for 90 degrees outside the fixed pulleys 1 positioned at the end part, and the traction force of the steel wire ropes 3 positioned at the tail end under the rotation of the fixed pulleys 1 at the bottom is ensured;
in another embodiment, the chest expander 5 is an electronic chest expander 5 with a data transmission function, and the data transmission of the electric chest expander 5 through the data transmission module, i.e. a bluetooth, wifi or 5g chip is a well-known technology in the art, and the embodiment will not be described again;
working principle: when the shield data monitoring system is used, the steel wire rope 3 is wound into the fixed pulley 1 with the middle part screwed into the pipe piece lifting hole from the end part, the fixed pulley 1 with the middle part screwed into the pipe piece lifting hole is staggered and wound up and down by 180 degrees, then the fixed pulley 1 with the end part screwed into the pipe piece lifting hole is wound into the end part, then the steel wire rope 3 passes through each limiter 6, the tension device 5 and the tightener 4 are connected in the process, and the tension device 5 can use the electronic tension device 5 with the data transmission function and is connected with the other section of the steel wire rope 3.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. The shield segment tensioning device with the adjustable tensioning force comprises a plurality of segment lifting heads (2) screwed into segment lifting holes of a plurality of adjacent shield segments, and is characterized in that fixed pulleys (1) are fixedly arranged at the tops of the segment lifting heads (2), and steel wire ropes (3) connected end to end are wound between the fixed pulleys (1);
the fixed pulleys (1) positioned in the middle of the shield segments are fixedly provided with limiters (6), and the steel wire ropes (3) are arranged in the limiters (6) at the corresponding positions in a penetrating way;
and the steel wire rope (3) positioned at the rear side of the stroke of the limiter (6) is sequentially penetrated and connected with the chest expander (5) and the tightener (4).
2. The shield segment tensioning device with adjustable tensioning force according to claim 1, wherein the chest expander (5) is an electronic chest expander (5) with a data transmission function.
3. The shield segment tensioning device with adjustable tensioning force according to claim 1, wherein the tightener (4) is a basket bolt or a ratchet double-hook tightener (4).
4. The shield segment tensioning device with adjustable tensioning force according to claim 1, wherein the steel wire rope (3) is wound by 180 degrees in an up-down staggered manner outside the fixed pulley (1) positioned in the middle.
5. The shield segment tensioning device with adjustable tensioning force according to claim 1, wherein the steel wire rope (3) is wound at 90 degrees outside the fixed pulley (1) transversely positioned at the end part.
6. The shield segment tensioning device with adjustable tensioning force according to claim 1, wherein the segment lifting head (2) and the segment lifting hole are in threaded fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222987622.0U CN218971203U (en) | 2022-11-09 | 2022-11-09 | Shield segment tensioning device with adjustable tensioning force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222987622.0U CN218971203U (en) | 2022-11-09 | 2022-11-09 | Shield segment tensioning device with adjustable tensioning force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218971203U true CN218971203U (en) | 2023-05-05 |
Family
ID=86147818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222987622.0U Active CN218971203U (en) | 2022-11-09 | 2022-11-09 | Shield segment tensioning device with adjustable tensioning force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218971203U (en) |
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2022
- 2022-11-09 CN CN202222987622.0U patent/CN218971203U/en active Active
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