CN209925007U - Tunnel is first props up step bow member and connects steel sheet protection device - Google Patents
Tunnel is first props up step bow member and connects steel sheet protection device Download PDFInfo
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- CN209925007U CN209925007U CN201920592889.5U CN201920592889U CN209925007U CN 209925007 U CN209925007 U CN 209925007U CN 201920592889 U CN201920592889 U CN 201920592889U CN 209925007 U CN209925007 U CN 209925007U
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- seat
- guide rod
- protection
- seat body
- tunnel
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Abstract
The utility model discloses a tunnel primary support upper step arch center connecting steel plate protection device, which comprises a protection seat body, a connecting sleeve ring, a connecting seat and a limiting seat, wherein a concave notch is arranged at one end part of the protection seat body, limiting grooves are symmetrically arranged at two sides of the protection seat body where the concave notch is positioned respectively, and a guide rod is transversely arranged in each limiting groove; the connecting sleeve is sleeved on the guide rod and moves along the guide rod, the connecting seat is connected to the connecting sleeve, and a limiting seat is arranged above the connecting seat. This device is because bow member connecting plate agrees with each other with the protection seat body, facilitates the use to but reuse avoids the tunnel when spouting just, and bow member connecting plate and connecting hole are by spraying the concrete shutoff, have guaranteed the connection quality of upper and lower pilot tunnel bow member and the connection quality of upper and lower pilot tunnel sprayed concrete.
Description
Technical Field
The utility model belongs to the technical field of the tunnel construction, concretely relates to tunnel is just propped up protection device of step bow member steel sheet.
Background
In the traditional tunnel step method primary support construction, after the slag is discharged from the upper pilot tunnel, primary concrete spraying is immediately carried out to seal the surrounding rock so as to improve the self-stability of the surrounding rock, then anchor rods are arranged, reinforcing mesh is hung, an arch frame is installed, and finally, secondary concrete spraying is carried out to reach the designed thickness.
However, in the process of re-spraying concrete, the connecting steel plates and bolt holes at the lower ends of the arch frames are often covered by sprayed concrete, and the bottom of the sprayed concrete between the two steel arch frames is sticky with excavation virtual slag, so that in the process of lower guide excavation construction, in order to ensure the connecting quality of the connecting steel plates of the upper and lower guide steel arch frames and the connecting quality of the sprayed concrete of the upper and lower guide steel arch frames, the connecting steel plates and the bolt holes must be manually chiseled and cleaned. However, manual chiseling is labor-consuming and time-consuming, and the connecting steel plate is damaged due to improper operation of constructors in the chiseling process. Therefore, a protection device for the upper step arch center connection steel plate of the primary support of the tunnel is needed to solve the problem of the damage of the connection steel plate.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model aims to provide a tunnel is just propped up protection device of step arch centering steel sheet has solved among the prior art problem that arch centering steel sheet and bolt hole are covered by sprayed concrete.
The purpose of the utility model can be realized by the following technical scheme:
a protection device for an upper step arch center connecting steel plate of a primary tunnel support comprises a protection seat body, a connecting sleeve ring, a connecting seat and a limiting seat, wherein a concave notch is formed in one end of the protection seat body, limiting grooves are symmetrically formed in two sides of the protection seat body where the concave notch is located respectively, and a guide rod is transversely arranged in each limiting groove;
the connecting lantern ring is provided with a guide hole in a penetrating way, the guide hole is sleeved on the guide rod and moves along the direction of the guide rod, and the upper part of the guide hole where the connecting lantern ring is located is provided with a connecting hole in a penetrating way;
the connecting seat comprises a thread table and a connecting column at the upper part, the top of the connecting column is connected with the thread table, a connecting block is arranged at the bottom of the connecting column, the middle part of the connecting column is in threaded connection with a connecting hole of the connecting sleeve ring, and the connecting block is arranged in a guide hole of the connecting sleeve ring;
the limiting seat comprises a rubber sleeve, a damping spring and a threaded column, the middle of the rubber sleeve is of a cavity structure, the damping spring is arranged in a cavity of the rubber sleeve, the bottom of the rubber sleeve where the damping spring is located is connected with the threaded column, and the threaded column is in threaded connection with a threaded platform of the connecting seat.
Furthermore, a handle is arranged on the other side of the concave notch of the protection seat body, and the handle and the protection seat body are integrally formed.
Furthermore, the guide rod is of a semi-cylindrical structure, the arc-shaped surface of the guide rod faces downwards, the plane faces upwards, and the outer wall of the arc-shaped surface of the guide rod is attached to the inner wall of the guide hole of the connecting sleeve ring in a concentric mode.
Furthermore, the concave notch of the protection seat body is matched with the side edge of the arch connecting steel plate, and a threaded hole formed in a fixing plate at the bottom of the arch connecting steel plate is matched with the limiting seat.
The utility model has the advantages that:
1. this device is because bow member connecting plate agrees with each other with the protection seat body, facilitates the use to but reuse avoids the tunnel when spouting just, and bow member connecting plate and connecting hole are by spraying the concrete shutoff, have guaranteed the connection quality of upper and lower pilot tunnel bow member and the connection quality of upper and lower pilot tunnel sprayed concrete.
2. This device realizes spacing seat and the mutual adaptation of connecting hole of bow member joint steel board different positions through the removal of spacing seat on the guide bar, and the suitability strengthens greatly to the handle that sets up to and the position of adjusting spacing seat all make things convenient for manual operation.
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, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of a protection seat body according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a part a of a protection seat body according to an embodiment of the present invention;
FIG. 3 is a schematic view of the overall structure of the connection collar according to the embodiment of the present invention;
fig. 4 is a schematic view of the overall structure of the connection seat according to the embodiment of the present invention;
fig. 5 is a schematic sectional view of a spacing seat according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional structure diagram of an embodiment of the present invention;
fig. 7 is a schematic structural view of an arch connecting steel plate according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a use state of the embodiment of the present invention.
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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the embodiment of the utility model provides a tunnel is just propped up step arch centering steel sheet protection device, including protection seat body 1, the connecting sleeve ring 2, connecting seat 3, spacing seat 2, as shown in fig. 7, wherein arch centering steel sheet 5's bottom is equipped with fixed plate 51 to be provided with connecting hole 501 respectively at the both ends of fixed plate 51. A concave notch is formed in one end of the protection seat body 1, the concave notch is clamped on the side edge of the I-shaped structure of the arch connecting steel plate 5, the two sides of the protection seat body 1 where the concave notch is formed are respectively symmetrically provided with a limiting groove 11, a guide rod 12 is transversely arranged in the limiting groove 11, the guide rod 12 is of a semi-cylindrical structure, the arc surface of the guide rod 12 faces downwards, the plane faces upwards, and the guide rod 12 is sleeved with a connecting sleeve ring 4. The other side of the concave notch of the protection seat body 1 is provided with a handle 101.
As shown in fig. 3, the connecting sleeve ring 4 is provided with a guide hole 41 in a penetrating manner, the inner wall of the guide hole 41 is concentrically attached to the outer wall of the arc-shaped surface of the guide rod 12, the guide hole 41 is sleeved on the guide rod 12 and moves along the direction of the guide rod 12, and the upper portion of the connecting sleeve ring 4 where the guide hole 41 is located is provided with a threaded hole 411.
As shown in fig. 4, the connection seat 3 includes a screw platform 31 on the upper portion and a connection column 311, the top of the connection column 311 is connected below the screw platform 31, and a connection block 32 is arranged at the bottom of the connection column 311, the middle portion of the connection column 311 is screwed in a screw hole 411 of the connection sleeve ring 4, the connection block 32 is arranged in a guide hole 41 of the connection sleeve ring 4, and the screw platform 31 extends out of the upper portion of the connection sleeve ring 4.
As shown in fig. 5, the limiting seat 2 includes a rubber sleeve 21, a damping spring 22 and a threaded column 23, the middle of the rubber sleeve 21 is a cavity structure, the damping spring 22 is arranged in the cavity of the rubber sleeve 21, the threaded column 23 is arranged at the bottom of the rubber sleeve 21 where the damping spring 22 is located, and the threaded column 23 is in threaded connection with the threaded table 31 of the connecting seat 3. When the outer diameter of the rubber sleeve 21 is matched with the aperture of the connecting hole 501 of the fixing plate 51, once the rubber sleeve is pressed, the rubber sleeve 21 can be deformed to a certain extent under the action of the damping spring 22, so that the rubber sleeve 21 is effectively matched with the connecting hole 501.
As shown in fig. 7-8, during the use, with the screw thread post 23 and the connecting seat 3 thread platform 31 threaded connection of spacing seat 2, and remove the connecting lantern ring 4 with connecting seat 3 interconnect and remove on guide bar 12, when removing suitable position (spacing seat 2 and connecting hole 501 can the complex position), pass through the spliced pole 311 of the connecting seat 3 of screwing again this moment, make connecting block 32 below spliced pole 311 extrude each other with the plane of guide bar 12 top, under the effect of frictional force, realize the spliced pole 311 at connecting block 32 place and the rigidity of guide bar 12, in order to reach the rigidity of spacing seat 2 at guide bar 12. The structure can be adapted to the attachment holes 501 at different positions of the arch connecting steel plates 5.
This device is because bow member connecting plate agrees with each other with the protection seat body, facilitates the use to but reuse avoids the tunnel when spouting just, and bow member connecting plate and connecting hole are by spraying the concrete shutoff, have guaranteed the connection quality of upper and lower pilot tunnel bow member and the connection quality of upper and lower pilot tunnel sprayed concrete.
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 general 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 (4)
1. A protection device for an upper step arch center connecting steel plate of a primary tunnel support comprises a protection seat body (1), a connecting sleeve ring (4), a connecting seat (3) and a limiting seat (2), and is characterized in that a concave notch is formed in one end of the protection seat body (1), limiting grooves (11) are symmetrically formed in two sides of the protection seat body (1) where the concave notch is located respectively, and a guide rod (12) is transversely arranged in each limiting groove (11);
the connecting lantern ring (4) penetrates through a guide hole (41), the guide hole (41) is sleeved on the guide rod (12) and moves along the direction of the guide rod (12), and a connecting hole (411) penetrates through the upper part of the guide hole (41) where the connecting lantern ring (4) is located;
the connecting seat (3) comprises a thread table (31) and a connecting column (311) which are arranged at the upper part, the top of the connecting column (311) is connected with the thread table (31), a connecting block (32) is arranged at the bottom of the connecting column (311), the middle part of the connecting column (311) is in threaded connection with a connecting hole (411) of the connecting sleeve ring (4), and the connecting block (32) is arranged in a guide hole (41) of the connecting sleeve ring (4);
spacing seat (2) include rubber sleeve (21), damping spring (22), screw thread post (23), the middle part of rubber sleeve (21) is the cavity structure, just be provided with damping spring (22) in the cavity of rubber sleeve (21), and rubber sleeve (21) bottom connecting thread post (23) at damping spring (22) place, screw thread post (23) with screw thread platform (31) threaded connection of connecting seat (3).
2. The protection device for the upper step arch centering connecting steel plate of the tunnel primary support according to claim 1, wherein a handle (101) is arranged at the other side of the concave notch of the protection seat body (1), and the handle (101) and the protection seat body (1) are integrally formed.
3. The device for protecting the upper step arch centering connecting steel plate of the initial tunnel support according to claim 1, wherein the guide rod (12) is of a semi-cylindrical structure, the arc surface of the guide rod (12) faces downwards, the plane faces upwards, and the outer wall of the arc surface of the guide rod (12) is concentrically attached to the inner wall of the guide hole (41) of the connecting sleeve ring (4).
4. The protection device for the upper step arch connecting steel plate of the initial tunnel support according to claim 1, wherein the concave notch of the protection seat body (1) is matched with the side edge of the arch connecting steel plate (5), and a threaded hole (501) formed in a fixing plate (51) at the bottom of the arch connecting steel plate (5) is matched with the limiting seat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920592889.5U CN209925007U (en) | 2019-04-28 | 2019-04-28 | Tunnel is first props up step bow member and connects steel sheet protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920592889.5U CN209925007U (en) | 2019-04-28 | 2019-04-28 | Tunnel is first props up step bow member and connects steel sheet protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209925007U true CN209925007U (en) | 2020-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920592889.5U Expired - Fee Related CN209925007U (en) | 2019-04-28 | 2019-04-28 | Tunnel is first props up step bow member and connects steel sheet protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209925007U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915177A (en) * | 2019-04-28 | 2019-06-21 | 中交一公局第四工程有限公司 | A kind of first branch top bar arch junction steel plate protective device in tunnel |
-
2019
- 2019-04-28 CN CN201920592889.5U patent/CN209925007U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915177A (en) * | 2019-04-28 | 2019-06-21 | 中交一公局第四工程有限公司 | A kind of first branch top bar arch junction steel plate protective device in tunnel |
| CN109915177B (en) * | 2019-04-28 | 2024-03-08 | 中交一公局第四工程有限公司 | Protection device for steel plate for connecting primary support with upper step arch frame of tunnel |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200110 |
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| CF01 | Termination of patent right due to non-payment of annual fee |