CN213116318U - But butt joint structure of formula ordinary pressure tool changing blade disc and butt joint shield in ground that contracts - Google Patents
But butt joint structure of formula ordinary pressure tool changing blade disc and butt joint shield in ground that contracts Download PDFInfo
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- CN213116318U CN213116318U CN202022130003.0U CN202022130003U CN213116318U CN 213116318 U CN213116318 U CN 213116318U CN 202022130003 U CN202022130003 U CN 202022130003U CN 213116318 U CN213116318 U CN 213116318U
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- shield
- blade disc
- cutter head
- cutter
- tool changing
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Abstract
The utility model discloses a but dock butt joint structure that shield constructs in retractable ordinary pressure tool changing blade disc and ground, retractable ordinary pressure tool changing blade disc include the blade disc body, and the blade disc body is connected with the shield body through the flexible actuating mechanism of axial, and the blade disc body outer warp is less than the internal diameter of the shield body, is equipped with radial flexible cutter on the blade disc body. Preferably, an axial telescopic stirring rod is arranged on the back panel of the cutter head body, and the telescopic end of the axial telescopic stirring rod corresponds to the soil bin located at the rear part of the cutter head body. The utility model discloses a blade disc body can contract back to the shield internal under the flexible actuating mechanism's of axial effect, can be used to shield tunnel's ground butt joint etc. need withdraw the condition that the blade disc advances the shield body, has ordinary pressure tool changing function when normally tunnelling simultaneously, and the change of the cutter of being convenient for improves construction safety factor.
Description
Technical Field
The utility model relates to a shield constructs technical field, especially indicates a but dock butt joint structure that shield was constructed in retractable ordinary pressure tool changing blade disc and ground.
Background
The shield construction at home and abroad develops towards the direction of super burial depth and long distance. The country will build more large-scale long-distance underground traffic engineering and pipe network engineering, and adopt the shield method to construct. In many river-crossing sea-crossing tunnels, because the middle air shaft can not be arranged due to condition limitation, only one-time tunneling can be realized, great challenge is brought to equipment, and even if the most advanced normal-pressure tool changing technology is used, the normal-pressure cutterhead structure body can not be ensured to be required to be checked and maintained midway due to the abrasion in long-distance tunneling.
The existing shield method underground butt joint mainly has three major types such as civil engineering butt joint, mechanical type butt joint and hybrid butt joint, and all is applicable to the blade disc that the tool changing was pressed in the conventionality needs area, is the telescopic blade disc system of CN103726856B as the authorization bulletin number, has included the blade disc main shaft and has established the blade disc of blade disc main shaft one end still includes slewing mechanism and telescopic machanism, the slewing mechanism drive the blade disc main shaft is rotatory around its axial, the telescopic machanism drive the blade disc main shaft carries out concertina movement along its axial, slewing mechanism passes through the internal spline structure cover and fixes locating the spline structure accordant connection in the blade disc main shaft outside. The axial extension of the cutter head is realized, and the shield body is supported and guided. However, the cutter head is not suitable for shield excavation of tool head butt joint in the ground, so that the research on the retractable normal-pressure tool changing cutter head suitable for ground butt joint is necessary.
SUMMERY OF THE UTILITY MODEL
To not enough among the above-mentioned background art, the utility model provides a but retraction formula ordinary pressure tool changing blade disc and butt joint structure to solve above-mentioned technical problem.
The technical scheme of the utility model is realized like this: the utility model provides a but formula ordinary pressure tool changing blade disc that contracts, includes the blade disc body, and the blade disc body is connected with the shield body through the flexible actuating mechanism of axial, and blade disc body external diameter is less than the internal diameter of the shield body, is equipped with radial flexible cutter on the blade disc body.
Preferably, an axial telescopic stirring rod is arranged on the back panel of the cutter head body, and the telescopic end of the axial telescopic stirring rod corresponds to the soil bin located at the rear part of the cutter head body.
Preferably, the radially telescopic cutter is arranged on the outermost diameter edge of the cutter head body. The outermost footpath edge of blade disc body is equipped with the gate, and radial flexible cutter is located the gate and radially stretches out and draws back along the blade disc body.
Preferably, a large circular ring alloy block is detachably arranged on the outer edge of the cutter head body. The outer edge of the cutter head body is provided with an installation spigot, and the large circular ring alloy block is connected in the installation spigot through a fastener.
The utility model provides a butt joint structure of butt joint shield in ground, is including advancing the shield and receiving the shield, the propulsion blade disc that advances the shield and the receiving blade disc that receives the shield be retractable formula ordinary pressure tool changing blade disc. The outer diameter of the shield body I of the propelling shield is smaller than the inner diameter of the shield body II of the receiving shield.
The utility model discloses a blade disc body can contract back to the shield internal under the flexible actuating mechanism's of axial effect, can be used to shield tunnel's ground butt joint etc. need withdraw the condition that the blade disc advances the shield body, has ordinary pressure tool changing function when normally tunnelling simultaneously, and the change of the cutter of being convenient for improves construction safety factor. By adopting the underground butt joint structure of the retractable normal-pressure tool changing cutter head, the butt joint mode in shield construction is not limited by ground buildings, a proper butt joint place can be freely selected, the influence on the surrounding environment is small, the tunnel construction efficiency and the tunnel construction safety are improved, and the popularization value is high.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive work.
Fig. 1 is the schematic view of the retractable normal pressure tool changing cutter head structure of the utility model.
Fig. 2 is a schematic view of the connection state of the large ring alloy block of the present invention.
Fig. 3 is a schematic view of the dismantling state of the large ring alloy block of the present invention.
Fig. 4 is a schematic diagram of a shield butt joint state in embodiment 2.
Fig. 5 is a partially enlarged view of the butt joint structure of embodiment 2.
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 any creative effort belong to the protection scope of the present invention.
As shown in fig. 1, embodiment 1, a retractable normal pressure tool changing cutter head, including cutter head body 1, is equipped with the excavation cutter on the cutter head body 1, and cutter head body 1 is connected with shield body 3 through axial telescopic drive mechanism 2, and axial telescopic drive mechanism can adopt flexible hydro-cylinder, promotes cutter head and main drive and at the shield internal along axial seesaw, realizes the concertina movement of cutter head. The outer diameter of the cutter head body 1 is smaller than the inner diameter of the shield body 3, the cutter head body is convenient to enter the shield body smoothly in a withdrawing state, a radial telescopic cutter 4 is arranged on the cutter head body 1, when the cutter head body extends out of the shield body, the radial telescopic cutter extends out, the cutter head body can be used for tunneling as a normal excavation cutter, the cutter head body can be used as an overexcavation cutter to expand and dig, the profiling expands and digs, when the cutter head body is prepared to retract and butt joint, the cutter head body can retract radially inside, and other cutters also retract into the cutter head, so that the.
Further, be equipped with the flexible stirring rod 6 of axial on the backplate 5 of blade disc body 1, the flexible end of the flexible stirring rod 6 of axial is corresponding with the soil storehouse 7 that is located blade disc body 1 rear portion, the flexible stirring rod of axial includes stirring rod and flexible hydro-cylinder promptly, the stirring rod sets up at the flexible end of flexible hydro-cylinder and is located the soil storehouse, be used for stirring soil storehouse bottom dregs or mud, when blade disc body withdrawal shield is internal, retract the stirring rod simultaneously, prevent that withdrawal in-process stirring rod and soil storehouse from taking place to interfere, be provided with seal structure between stirring rod and the blade disc structure, it is inside that there is not the thick liquid entering blade disc to guarantee to retract the stirring rod.
Further, radial flexible cutter 4 sets up at the outermost footpath edge of blade disc body 1, and radial flexible cutter can radially stretch out and draw back. The outermost footpath edge of blade disc body 1 is equipped with gate 8, and radial flexible cutter 4 is located gate 8 and radially stretches out and draws back along blade disc body 1. The radial telescopic cutter comprises a radial telescopic oil cylinder and a cutter, the radial telescopic oil cylinder is arranged in the gate, the cutter is fixed at the telescopic end of the radial telescopic oil cylinder, when the radial telescopic cutter extends out, the gate is opened, and the cutter extends out of the gate. When the radial telescopic cutter retracts into the cutter head body, the gate is closed, so that the radial telescopic cutter can fully retract into the shield shell in the diameter direction of the cutter head.
Further, as shown in fig. 2 and 3, the outer edge of the cutter head body 1 is detachably provided with a large circular ring alloy block 9, the outer edge of the cutter head body 1 is provided with an installation seam allowance 10 for positioning and fixing the large circular ring alloy block, the diameter of the circular ring where the installation seam allowance 10 is located is smaller than the inner diameter of the shield body, and the cutter head body 1 can be smoothly retracted into the shield body after the large circular ring alloy block is detached. The large circular ring alloy block 9 is connected in the mounting spigot 10 through a fastener 11. The fastener is a stud, one end of the stud is in threaded fit with the large circular ring alloy block, and the other end of the stud is provided with a locking nut. The large circular ring alloy block is fixed through the double-end stud, and meanwhile, the installation seam allowance is formed in the large circular ring alloy block.
As shown in fig. 4 and 5, in embodiment 2, a docking structure of a ground docking shield includes a propelling shield and a receiving shield, the propelling shield starts tunnel excavation at an initiating end, the receiving shield starts tunnel excavation at a receiving end, and both a propelling cutterhead 12 of the propelling shield and a receiving cutterhead 13 of the receiving shield are the retractable normal pressure cutter changing cutterhead described in embodiment 1. The diameter of the impeller 12 is smaller than the diameter of the receiving impeller 13. The outer diameter of a shield body I121 of the propelling shield is smaller than the inner diameter of a shield body II 131 of the receiving shield, and in a butt joint state, the propelling cutter head 12 is retracted into the shield body I of the propelling shield, the receiving cutter head 13 is retracted into the shield body II of the receiving shield, and then the shield body I of the propelling shield is advanced into the shield body II of the receiving shield, so that safe butt joint in the ground is realized; the butt joint structure is suitable for the in-ground butt joint construction of the high-water-pressure soft soil stratum. The method has the advantages of free selection of proper butt joint points, small influence on the surrounding environment and the like.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a but retraction formula ordinary pressure tool changing blade disc which characterized in that: including blade disc body (1), blade disc body (1) is connected with the shield body (3) through axial telescopic drive mechanism (2), and blade disc body (1) external diameter is less than the internal diameter of shield body (3), is equipped with radial flexible cutter (4) on blade disc body (1).
2. The retractable atmospheric tool changing cutter head of claim 1, wherein: the rear panel (5) of the cutter head body (1) is provided with an axial telescopic stirring rod (6), and the telescopic end of the axial telescopic stirring rod (6) corresponds to a soil bin (7) located at the rear part of the cutter head body (1).
3. The retractable atmospheric tool changing cutter head of claim 1 or 2, wherein: the radial telescopic cutter (4) is arranged on the outermost diameter edge of the cutter head body (1).
4. The retractable atmospheric tool changing cutter head of claim 3, wherein: the edge of the outermost diameter of the cutter head body (1) is provided with a gate (8), and the radial telescopic cutter (4) is located in the gate (8) and radially extends and retracts along the cutter head body (1).
5. A retractable atmospheric cutter changing head as claimed in claim 1, 2 or 4, wherein: the outer edge of the cutter head body (1) is detachably provided with a large circular ring alloy block (9).
6. The retractable atmospheric tool changing cutter head of claim 5, wherein: the outer edge of the cutter head body (1) is provided with an installation seam allowance (10), and the large circular ring alloy block (9) is connected into the installation seam allowance (10) through a fastener (11).
7. The utility model provides a butt joint structure that butt joint shield constructs in ground which characterized in that: the retractable normal pressure tool changing cutter comprises a propelling shield and a receiving shield, wherein a propelling cutter head (12) of the propelling shield and a receiving cutter head (13) of the receiving shield are the retractable normal pressure tool changing cutter heads of claim 1, claim 4 or claim 6.
8. The docking structure of the underground docking shield according to claim 7, wherein: the outer diameter of a shield body I (121) of the propelling shield is smaller than the inner diameter of a shield body II (131) of the receiving shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022130003.0U CN213116318U (en) | 2020-09-25 | 2020-09-25 | But butt joint structure of formula ordinary pressure tool changing blade disc and butt joint shield in ground that contracts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022130003.0U CN213116318U (en) | 2020-09-25 | 2020-09-25 | But butt joint structure of formula ordinary pressure tool changing blade disc and butt joint shield in ground that contracts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213116318U true CN213116318U (en) | 2021-05-04 |
Family
ID=75664834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022130003.0U Active CN213116318U (en) | 2020-09-25 | 2020-09-25 | But butt joint structure of formula ordinary pressure tool changing blade disc and butt joint shield in ground that contracts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213116318U (en) |
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2020
- 2020-09-25 CN CN202022130003.0U patent/CN213116318U/en active Active
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