CN215979410U - Supporting equipment for open excavation construction of tunnel portal - Google Patents
Supporting equipment for open excavation construction of tunnel portal Download PDFInfo
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- CN215979410U CN215979410U CN202122474915.4U CN202122474915U CN215979410U CN 215979410 U CN215979410 U CN 215979410U CN 202122474915 U CN202122474915 U CN 202122474915U CN 215979410 U CN215979410 U CN 215979410U
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Abstract
The utility model discloses supporting equipment for open cut construction of a tunnel portal, which comprises an arc-shaped stabilizing plate, an arc-shaped supporting plate, a lifting component and a supporting frame arranged in the tunnel portal, wherein the lifting component comprises a movable plate, a horizontal plate, a hydraulic cylinder and a shear fork; the utility model has the beneficial effects that: the positioning of the arc-shaped supporting plate and the arc-shaped stabilizing plate during installation is increased by the designed positioning part and the matching of the adsorption magnet, the positioning groove and the iron sheet, so that the arc-shaped supporting plate and the arc-shaped stabilizing plate can conveniently pass through the expansion screw hole through the expansion screw to be fixed, and the installation efficiency of the arc-shaped supporting plate and the arc-shaped stabilizing plate is improved; through the guide part of design, utilize the collocation of guide slot and guide pillar, the direction when further increasing the activity of arc firm board, the direction of arc firm board has increased the direction of arc backup pad, has reduced the skew of arc backup pad, has prolonged the life of arc backup pad.
Description
Technical Field
The utility model belongs to the technical field of tunnel portal construction support, and particularly relates to support equipment for open cut construction of a tunnel portal.
Background
The tunnel entrance tunnel section has the advantages of poor conditions, soft rock, broken rock, low surrounding rock level and poor tunnel forming conditions, and when the tunnel portal is constructed by open cut, the tunnel portal is supported to help reduce collapse of the tunnel vault and the side wall, so that the safety of tunnel construction is ensured.
Tunnel entrance to a cave open cut construction is strutted, often uses and struts equipment, and the current support equipment that is used for tunnel entrance to a cave open cut construction has the not enough of following aspect when using:
1. the arc-shaped supporting plate is propped against the top of the tunnel, after a long time, the arc-shaped supporting plate is easy to damage, the damaged arc-shaped supporting plate and the damaged arc-shaped stabilizing plate are installed, and the arc-shaped supporting plate and the arc-shaped stabilizing plate are inconvenient to align with the expansion screw holes of the arc-shaped supporting plate and the arc-shaped stabilizing plate, so that the installation time of the arc-shaped supporting plate and the arc-shaped stabilizing plate is increased;
2. the arc backup pad supports at the tunnel top, and when increasing the buffering to the arc backup pad, the direction aspect of further increase arc backup pad is not enough, causes the offset of arc backup pad easily, has aggravated the damage of arc backup pad.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide supporting equipment for open excavation construction of a tunnel portal, and aims to solve the problems that an arc-shaped supporting plate provided in the background art is propped against the top of a tunnel, the arc-shaped supporting plate is easy to damage after a long time, the damaged arc-shaped supporting plate and an arc-shaped stabilizing plate are installed, the arc-shaped supporting plate and the damaged arc-shaped stabilizing plate are inconvenient to align with expansion screw holes of the arc-shaped supporting plate and the arc-shaped stabilizing plate, and the installation time of the arc-shaped supporting plate and the arc-shaped stabilizing plate is increased; the arc backup pad supports at the tunnel top, and when increasing the buffering to the arc backup pad, the direction aspect of further increase arc backup pad is not enough, causes the offset of arc backup pad easily, has aggravated the damage problem of arc backup pad.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a strut equipment for tunnel entrance to a cave open cut construction, includes arc firm board, arc backup pad, lifting unit and sets up in tunnel entrance to a cave intraoral support frame, lifting unit includes fly leaf, horizontal plate, pneumatic cylinder, cuts the fork, the horizontal plate is fixed in the top of support frame, the one end of cutting the fork is connected with the fly leaf, and the other end is connected with the horizontal plate, be provided with on the horizontal plate and cut the pneumatic cylinder that the fork is connected, the top of fly leaf is provided with firm frame, the arc backup pad is fixed in the top of arc firm board, be provided with buffer unit between arc firm board and the firm frame, the surface of arc backup pad and arc firm board has all seted up the inflation screw hole, and the inflation screw hole is corresponding, be provided with locating unit on arc backup pad and the arc firm board, and locating unit includes adsorbing magnet, and the screw hole is corresponding, Constant head tank and iron sheet, the bottom of arc backup pad is provided with the adsorption magnet of symmetric distribution, supply adsorption magnet male constant head tank is seted up at the top of arc firm board, and the interior bottom of constant head tank is provided with the iron sheet, adsorption magnet and iron sheet adsorb the connection.
Preferably, the buffer part comprises a movable block, an expansion spring and a containing groove, the containing groove is formed in the top of the stabilizing frame, one end of the movable block is embedded into the containing groove, the other end of the movable block extends out of the containing groove and is connected with the arc-shaped stabilizing plate, and the expansion spring is arranged between the movable block and the containing groove.
Preferably, the inner side surface of the accommodating groove is provided with guide blocks which are symmetrically distributed, and the movable block is connected with the guide blocks in a sliding manner.
Preferably, the guide block is of a concave structure, and guide parts are arranged on the arc-shaped stabilizing plate and the stabilizing frame.
Preferably, the guide part comprises a guide groove and a guide pillar, the guide groove is formed in the surface of the stabilizing frame, and the guide pillar which is slidably connected with the guide groove is arranged at the bottom of the arc-shaped stabilizing plate.
Preferably, the tunnel further comprises a side plate fixed on the inner side surface of the tunnel; the bottom of the support frame is provided with a movable wheel.
Compared with the prior art, the utility model has the beneficial effects that:
(1) the positioning of the arc-shaped supporting plate and the arc-shaped stabilizing plate during installation is increased by the designed positioning part and the matching of the adsorption magnet, the positioning groove and the iron sheet, so that the arc-shaped supporting plate and the arc-shaped stabilizing plate can conveniently pass through the expansion screw hole through the expansion screw to be fixed, and the installation efficiency of the arc-shaped supporting plate and the arc-shaped stabilizing plate is improved;
(2) the inner side surface of the accommodating groove is provided with guide blocks which are symmetrically distributed, and the movable blocks are in sliding connection with the guide blocks, so that the movable guide of the movable blocks is increased, and the movable guide of the arc-shaped stabilizing plate is increased;
(3) through the guide part of design, utilize the collocation of guide slot and guide pillar, the direction when further increasing the activity of arc firm board, the direction of arc firm board has increased the direction of arc backup pad, has reduced the skew of arc backup pad, has prolonged the life of arc backup pad.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the region H in FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of the area D in FIG. 1 according to the present invention;
FIG. 4 is a perspective view of the guide block of the present invention;
in the figure: 1. a support frame; 2. an arc-shaped stabilizing plate; 3. a stabilizing frame; 4. an arc-shaped support plate; 5. a movable plate; 6. a horizontal plate; 7. a side plate; 8. a moving wheel; 9. a hydraulic cylinder; 10. shearing a fork; 11. adsorbing a magnet; 12. positioning a groove; 13. iron sheets; 14. a movable block; 15. a guide block; 16. a tension spring; 17. a containing groove; 18. a guide groove; 19. and (6) a guide pillar.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the present invention provides a technical solution: a supporting device for open excavation construction of a tunnel portal comprises an arc-shaped stabilizing plate 2, an arc-shaped supporting plate 4, a lifting component and a supporting frame 1 arranged in the tunnel portal, wherein the lifting component comprises a movable plate 5, a horizontal plate 6, a hydraulic cylinder 9 and a shear fork 10, the horizontal plate 6 is fixed at the top of the supporting frame 1, one end of the shear fork 10 is connected with the movable plate 5, the other end of the shear fork 10 is connected with the horizontal plate 6, the hydraulic cylinder 9 connected with the shear fork 10 is arranged on the horizontal plate 6, the lifting of the movable plate 5 is more convenient through the matching of the hydraulic cylinder 9 and the shear fork 10, a stabilizing frame 3 is arranged at the top of the movable plate 5, the arc-shaped supporting plate 4 is fixed at the top of the arc-shaped stabilizing plate 2, and a buffer component is arranged between the arc-shaped stabilizing plate 2 and the stabilizing frame 3; the surfaces of the arc-shaped supporting plate 4 and the arc-shaped stabilizing plate 2 are provided with expansion screw holes which are corresponding, the arc-shaped supporting plate 4 and the arc-shaped stabilizing plate 2 are provided with positioning parts which comprise adsorption magnets 11, positioning grooves 12 and iron sheets 13, the bottom of the arc-shaped supporting plate 4 is provided with the adsorption magnets 11 which are symmetrically distributed, the top of the arc-shaped stabilizing plate 2 is provided with the positioning grooves 12 for the insertion of the adsorption magnets 11, the inner bottom of the positioning grooves 12 is provided with the iron sheets 13, the adsorption magnets 11 and the iron sheets 13 are in adsorption connection, when the arc-shaped supporting plate 4 is propped against the top of a tunnel and damaged and disassembled, the expansion screws are loosened, the damaged arc-shaped supporting plate 4 is disassembled from the arc-shaped stabilizing plate 2, a new arc-shaped supporting plate 4 is taken, the adsorption magnets 11 at the bottom of the new arc-shaped supporting plate 4 are inserted into the positioning grooves 12 arranged at the top of the arc-shaped stabilizing plate 2, and are adsorbed by the adsorption magnets 11 and the iron sheets 13 at the bottom of the positioning grooves 12, the location of arc backup pad 4 and arc steadying plate 2 when having increased the installation for arc backup pad 4 and arc steadying plate 2 pass the inflation screw hole through the inflation screw and fix more convenient, have improved the installation effectiveness of arc backup pad 4 and arc steadying plate 2.
In this embodiment, preferably, the buffering part includes movable block 14, expanding spring 16, storage tank 17 has been seted up at the top of steady frame 3, storage tank 17 has been embedded to the one end of movable block 14, the other end stretches out storage tank 17, and be connected with arc steadying plate 2, expanding spring 16 sets up between movable block 14 and storage tank 17, when arc steadying plate 2 pressurized activity, movable block 14 on arc steadying plate 2 is at the storage tank 17 internalization that the top was seted up at steady frame 3, and utilize expanding spring 16 to realize the buffering when arc steadying plate 2 moves about.
In this embodiment, preferably, the inner side surface of the accommodating groove 17 is provided with the guide blocks 15 which are symmetrically distributed, and the movable blocks 14 are slidably connected with the guide blocks 15, so that the movable guide of the movable blocks 14 is increased, and the movable guide of the arc-shaped fixing plate 2 is facilitated to be increased.
In this embodiment, preferably, the guide block 15 is a concave structure, the arc-shaped stabilizing plate 2 and the stabilizing frame 3 are provided with guide members, each guide member includes a guide groove 18 and a guide post 19, the surface of the stabilizing frame 3 is provided with the guide groove 18, the bottom of the arc-shaped stabilizing plate 2 is provided with the guide post 19 slidably connected with the guide groove 18, and the guide of the arc-shaped stabilizing plate 2 during movement is further increased.
In this embodiment, it is preferable that the tunnel further includes a side plate 7 fixed to the inner side surface of the tunnel, and the inner side surface of the tunnel is supported by the side plate 7; the bottom of support frame 1 is installed and is removed wheel 8, and it is more convenient to remove support frame 1 through removing wheel 8.
The working principle and the using process of the utility model are as follows: the movable support 1 is arranged at the tunnel opening through a movable wheel 8, the movable plate 5 is lifted through the matching of a shear fork 10 and a hydraulic cylinder 9 with the model WJ-A012, the movable plate 5 is lifted to drive a stabilizing frame 3 to lift, the stabilizing frame 3 is lifted to drive an arc-shaped stabilizing plate 2 and an arc-shaped support plate 4 to lift, the arc-shaped support plate 4 is pressed against the top of the tunnel to support the tunnel opening, when the arc-shaped support plate 4 is pressed against the top of the tunnel and damaged and disassembled, the arc-shaped support plate 4 is driven to be separated from the top of the tunnel through the hydraulic cylinder 9 and the shear fork 10, an expansion screw is loosened, the damaged arc-shaped support plate 4 is disassembled from the arc-shaped stabilizing plate 2, a new arc-shaped support plate 4 is taken, an adsorption magnet 11 at the bottom of the new arc-shaped support plate 4 is inserted into a positioning groove 12 arranged at the top of the arc-shaped stabilizing plate 2 and is adsorbed by the adsorption magnet 11 and an iron sheet 13 at the bottom of the positioning groove 12, the positioning of the arc-shaped supporting plate 4 and the arc-shaped stabilizing plate 2 during installation is increased, so that the arc-shaped supporting plate 4 and the arc-shaped stabilizing plate 2 can pass through the expansion screw hole through the expansion screw to be fixed more conveniently.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A supporting device for open cut construction of a tunnel portal comprises an arc-shaped stabilizing plate (2), an arc-shaped supporting plate (4), a lifting component and a supporting frame (1) arranged in the tunnel portal, the lifting component comprises a movable plate (5), a horizontal plate (6), a hydraulic cylinder (9) and a shear fork (10), the horizontal plate (6) is fixed on the top of the support frame (1), one end of the shear fork (10) is connected with the movable plate (5), the other end is connected with the horizontal plate (6), a hydraulic cylinder (9) connected with a shear fork (10) is arranged on the horizontal plate (6), the top of the movable plate (5) is provided with a stabilizing frame (3), the arc-shaped supporting plate (4) is fixed on the top of the arc-shaped stabilizing plate (2), be provided with buffer unit, its characterized in that between arc steadying plate (2) and firm frame (3): the utility model discloses an iron sheet fixing device, including arc backup pad (4), arc steadying plate (2), locating component, adsorption magnet (11), constant head tank (12) and iron sheet (13), the bottom of arc backup pad (4) is provided with symmetric distribution's adsorption magnet (11), the top of arc steadying plate (2) is seted up and is supplied adsorption magnet (11) male constant head tank (12), and the interior bottom of constant head tank (12) is provided with iron sheet (13), adsorption magnet (11) and iron sheet (13) adsorb the connection, the expansion screw hole has all been seted up on the surface of arc backup pad (4) and arc steadying plate (2), and the expansion screw hole is corresponding, be provided with locating component on arc backup pad (4) and arc steadying plate (2), and locating component includes adsorption magnet (11), constant head tank (12) and iron sheet (13).
2. The supporting equipment for open-cut construction of the tunnel portal according to claim 1, wherein: the buffer part comprises a movable block (14), an expansion spring (16) and a containing groove (17), the containing groove (17) is formed in the top of the stabilizing frame (3), one end of the movable block (14) is embedded into the containing groove (17), the other end of the movable block extends out of the containing groove (17) and is connected with the arc-shaped stabilizing plate (2), and the expansion spring (16) is arranged between the movable block (14) and the containing groove (17).
3. The supporting equipment for open-cut construction of the tunnel portal according to claim 2, characterized in that: the inner side surface of the accommodating groove (17) is provided with guide blocks (15) which are symmetrically distributed, and the movable block (14) is connected with the guide blocks (15) in a sliding manner.
4. The supporting equipment for open-cut construction of a tunnel portal according to claim 3, characterized in that: the guide block (15) is of a concave structure, and guide parts are arranged on the arc-shaped stabilizing plate (2) and the stabilizing frame (3).
5. The supporting equipment for open-cut construction of the tunnel portal according to claim 4, wherein: the guide part comprises a guide groove (18) and a guide post (19), the guide groove (18) is formed in the surface of the stabilizing frame (3), and the guide post (19) which is in sliding connection with the guide groove (18) is arranged at the bottom of the arc-shaped stabilizing plate (2).
6. The supporting equipment for open-cut construction of the tunnel portal according to claim 1, wherein: the tunnel is characterized by also comprising a side plate (7) fixed on the inner side surface of the tunnel; the bottom of the support frame (1) is provided with a movable wheel (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122474915.4U CN215979410U (en) | 2021-10-14 | 2021-10-14 | Supporting equipment for open excavation construction of tunnel portal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122474915.4U CN215979410U (en) | 2021-10-14 | 2021-10-14 | Supporting equipment for open excavation construction of tunnel portal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215979410U true CN215979410U (en) | 2022-03-08 |
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ID=80508126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122474915.4U Active CN215979410U (en) | 2021-10-14 | 2021-10-14 | Supporting equipment for open excavation construction of tunnel portal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215979410U (en) |
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2021
- 2021-10-14 CN CN202122474915.4U patent/CN215979410U/en active Active
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