CN210714728U - Tunnel steel bow member hunch foot prevents subsiding device - Google Patents
Tunnel steel bow member hunch foot prevents subsiding device Download PDFInfo
- Publication number
- CN210714728U CN210714728U CN201921779103.7U CN201921779103U CN210714728U CN 210714728 U CN210714728 U CN 210714728U CN 201921779103 U CN201921779103 U CN 201921779103U CN 210714728 U CN210714728 U CN 210714728U
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- support
- steel arch
- settling
- fixed
- hydraulic jack
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Abstract
The utility model discloses a tunnel steel arch centering hunch foot anti-settling device, set up inboard at tunnel country rock, including steel arch centering connecting plate, unable adjustment base, still include adjusting base, prevent subsiding support, hydraulic jack, support fixed foot, unable adjustment base, hydraulic jack is vertical to be fixed on unable adjustment base up end, adjusting base fixes terminal surface under the steel arch centering connecting plate, adjusting base bottom is vertical to be fixed with the universal ball, hydraulic jack's ejector pin top axial fixation has the universal ball seat, prevent subsiding the support and set up to a plurality ofly and distribute far away from tunnel country rock one side, prevent subsiding the support top hinge joint on adjusting base, support fixed foot fixes at prevent subsiding the support end; a hydraulic cylinder is arranged between the lower part of the anti-settling support and the hydraulic jack, the bottom of the hydraulic cylinder is fixed on the outer wall of the hydraulic jack, and the top end of a mandril of the hydraulic cylinder is hinged to the inner side wall of the anti-settling support. Compared with the prior art, the utility model discloses can effectively solve the steel and encircle the hunch foot and suspend in midair, subside the scheduling problem.
Description
Technical Field
The utility model relates to a tunnel engineering technical field, especially a device is prevented subsiding by tunnel steel bow member arch springing.
Background
With the rapid development of the traffic construction in China, the construction quantity of tunnel engineering is increased year by year, and the tunnel engineering develops towards long tunnels and large-section tunnels.
The steel arch support is a common technical means in the tunnel engineering construction process, can effectively control the deformation of surrounding rocks and bear the load of the surrounding rocks, and is an essential support means particularly for tunnel construction with poor surrounding rocks and large sections. However, in the process of erecting the steel arch, due to the influence of factors such as geological conditions, excavation blasting, construction level and the like, when the arch springing of the steel arch is erected, the problems of suspension and overlarge arch springing settlement sometimes occur, so that the problem that the gap of the arch back of the steel arch is overlarge and the self supporting function cannot be effectively exerted is caused, the structural supporting stress and the influence of the next construction are influenced, and the construction safety and the whole engineering quality are seriously damaged.
Disclosure of Invention
The utility model discloses a solve traditional steel bow member and erect the problem that can not guarantee construction quality, can't reach design support intensity, provide a device is prevented subsiding by tunnel steel bow member hunch foot.
In order to achieve the purpose, the utility model is implemented according to the following technical scheme:
a tunnel steel arch springing anti-settling device is arranged on the inner side of tunnel surrounding rocks and comprises a steel arch connecting plate used for connecting a steel arch, a fixed base used for being fixed in a foundation at the position of the steel arch springing, an adjusting base, an anti-settling support, a hydraulic jack, a support fixing foot and a fixed base, wherein the hydraulic jack is vertically fixed on the upper end surface of the fixed base; a hydraulic cylinder is arranged between the lower portion of the anti-settling support and the hydraulic jack, the bottom of the hydraulic cylinder is fixed on the outer wall of the hydraulic jack, and the top end of a mandril of the hydraulic cylinder is hinged to the inner side wall of the anti-settling support.
Furthermore, the steel arch connecting plate is detachably connected with the connecting steel arch.
Furthermore, the anti-settling support is a telescopic rod and comprises an outer barrel and a telescopic inner rod with the tail end inserted into the outer barrel, the top end of the telescopic inner rod is hinged to the adjusting base, and a telescopic adjusting screw used for locking the telescopic inner rod is arranged on the upper portion of the outer barrel.
Furthermore, the anti-settling supports are three, a movable hinged support is fixed to the outer edge of the adjusting base, and the top end of the telescopic inner rod is installed in the movable hinged support through adjusting bolts and nuts.
Furthermore, the support fixing foot is a square plate, and nail teeth are arranged on the lower end face of the square plate.
Furthermore, a universal ball is fixed on the upper end face of the support fixing foot, and a universal ball seat matched with the universal ball is axially fixed at the tail end of the anti-settling support.
Compared with the prior art, the fixing base is embedded into the steel arch frame to a proper depth in advance when the fixing base is used, the steel arch frame can be tightly connected with the steel arch frame by adjusting the hinge joint and the hydraulic adjusting device when the steel arch frame is erected, and the whole device is more stable by recycling the anti-settling support; when the steel bow member takes place to subside, the device has solved and has erect the steel bow member when the bow member does not have effective support, utilizes this steel to encircle high adjusting device can effectively solve the steel bow member and suspend in midair, subside scheduling problem, and the device can change different kinds of connecting plate and unable adjustment base according to actual engineering demand, and is easy and simple to handle and be applicable to multiple construction environment.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention.
Fig. 2 is a left side view of an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. The specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
As shown in fig. 1 and fig. 2, the tunnel steel arch springing anti-settling device of this embodiment is disposed on the inner side of the tunnel surrounding rock, and includes a steel arch connecting plate 1 for connecting the steel arch (in this embodiment, the steel arch connecting plate 1 is detachably connected with the connecting steel arch, and specifically, a through hole may be formed in the steel arch connecting plate 1, and then the steel arch connecting plate 1 and the steel arch are connected together by using a bolt and a nut), a fixed base 8 for fixing in the foundation at the position of the steel arch springing, and further includes an adjusting base 2, an anti-settling support 4, a hydraulic jack 5, a support fixing leg 7, and a fixed base 8, wherein the hydraulic jack 5 is vertically fixed on the upper end surface of the fixed base 8, the adjusting base 2 is fixed on the lower end surface of the steel arch connecting plate 1, a universal ball 12 is vertically fixed at the bottom of the adjusting base 2, and a universal ball seat 3 matched with the universal ball 12 is axially fixed at the top of a mand, the anti-settling support 4 is arranged in a plurality of numbers and distributed on one side far away from the tunnel surrounding rock, the top end of the anti-settling support 4 is hinged to the adjusting base 2, and the support fixing feet 7 are fixed at the tail end of the anti-settling support 4; a hydraulic cylinder 9 is arranged between the lower portion of the anti-settling support 4 and the hydraulic jack 5, the bottom of the hydraulic cylinder 9 is fixed on the outer wall of the hydraulic jack 5, and the top end of a mandril of the hydraulic cylinder 9 is hinged to the inner side wall of the anti-settling support 4. Hydraulic jack 5 provides the main support to the steel bow member in this embodiment, because the universal ball 12 of adjusting base 2 bottom of steel bow member connecting plate 1 below can adapt to the atress angle of steel bow member automatically, again by preventing subsiding support 4 and providing the inboard side direction of tunnel country rock and supporting, prevent subsiding pneumatic cylinder 9 between support 4 and the hydraulic jack 5 and can provide horizontal pulling force, and can adjust the horizontal pulling force to preventing subsiding support 4 at any time through the ejecting or the withdrawal of ejector pin at pneumatic cylinder 9, be convenient for adjust the side direction support of preventing subsiding support 4, thereby make the side direction support of preventing subsiding support 4 more firm.
In this embodiment, the anti-settling support 4 is a telescopic rod, and in the actual use process, the anti-settling support 4 is three, the outer edge of the adjusting base 2 is fixed with a movable hinged support, the top end of the telescopic inner rod is installed in the movable hinged support 11 by using an adjusting bolt and nut 10, the telescopic inner rod 42 with the tail end inserted into the outer cylinder 41 comprises an outer cylinder 41 and a telescopic inner rod 42 with the tail end inserted into the outer cylinder 41, the top end of the telescopic inner rod 42 is hinged to the adjusting base 2, and the upper part of the outer cylinder 42 is provided with a telescopic adjusting screw 6 for.
In this embodiment, support fixed foot 7 is the square plate, and the terminal surface is equipped with spike tooth (not drawn in the picture) under the square plate, and the spike tooth can increase the frictional force of support fixed foot 7 and steel bow member hunch foot position ground to the messenger prevents subsiding support 4 and stabilizes more.
In the in-service use process, 7 up ends of support fixed foot are fixed with universal ball 12, prevent subsiding 4 terminal axial fixity of support have with universal ball matched with universal ball seat 3, so support fixed foot 7 can be all the time with steel bow member arch springing position ground complete contact when square board atress promptly, increase frictional force to make prevent subsiding support 4 more firm.
In addition, in the implementation process of the embodiment, the style of the fixed base 8 can be changed according to actual construction conditions, the height adjusting device shown in fig. 1 is applied to the tunnel with better surrounding rock conditions, and the fixed base is convenient to install and use in rock blocks and broken stones quickly.
The application method of the tunnel steel arch springing anti-settling device comprises the following steps:
step one, embedding a fixed base 8 at the arch springing position of a steel arch frame in advance, wherein the embedding depth is determined according to the actual construction environment;
step two, fine adjustment is carried out on the arch springing of the steel arch frame by adjusting the lifting of the hydraulic jack 5;
step three, connecting the steel arch connecting plate 1 with the steel arch;
step four, adjusting the anti-settling support 4 and the hydraulic cylinder 9 to enable the whole device to be more stable;
and step five, repeating the step three and the step four until the steel arch can be attached to the tunnel surrounding rock, so that the steel arch can play a role in supporting.
The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.
Claims (6)
1. The tunnel steel arch springing anti-settling device is arranged on the inner side of tunnel surrounding rocks and is characterized by comprising a steel arch connecting plate for connecting a steel arch and a fixed base for fixing the fixed base in a foundation at the position of the steel arch springing, and further comprising an adjusting base, an anti-settling support, a hydraulic jack, a support fixing foot and a fixed base, wherein the hydraulic jack is vertically fixed on the upper end surface of the fixed base; a hydraulic cylinder is arranged between the lower portion of the anti-settling support and the hydraulic jack, the bottom of the hydraulic cylinder is fixed on the outer wall of the hydraulic jack, and the top end of a mandril of the hydraulic cylinder is hinged to the inner side wall of the anti-settling support.
2. The tunnel steel arch springing anti-settling device as recited in claim 1, wherein: the steel arch connecting plate is detachably connected with the connecting steel arch.
3. The tunnel steel arch springing anti-settling device as recited in claim 1, wherein: the anti-settling support is a telescopic rod and comprises an outer barrel and a telescopic inner rod, the tail end of the telescopic inner rod is inserted into the outer barrel, the top end of the telescopic inner rod is hinged to the adjusting base, and a telescopic adjusting screw used for locking the telescopic inner rod is arranged on the upper portion of the outer barrel.
4. The tunnel steel arch springing anti-settling device as recited in claim 3, wherein: the anti-settling support is arranged into three, a movable hinged support is fixed on the outer edge of the adjusting base, and the top end of the telescopic inner rod is installed in the movable hinged support through adjusting bolts and nuts.
5. The tunnel steel arch springing anti-settling device as recited in claim 1, wherein: the support fixing foot is a square plate, and nail teeth are arranged on the lower end face of the square plate.
6. The tunnel steel arch springing anti-settling device as claimed in claim 3 or 5, wherein: the support is characterized in that a universal ball is fixed on the upper end face of the support fixing foot, and a universal ball seat matched with the universal ball is axially fixed at the tail end of the anti-settling support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921779103.7U CN210714728U (en) | 2019-10-22 | 2019-10-22 | Tunnel steel bow member hunch foot prevents subsiding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921779103.7U CN210714728U (en) | 2019-10-22 | 2019-10-22 | Tunnel steel bow member hunch foot prevents subsiding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210714728U true CN210714728U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921779103.7U Expired - Fee Related CN210714728U (en) | 2019-10-22 | 2019-10-22 | Tunnel steel bow member hunch foot prevents subsiding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210714728U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983492A (en) * | 2021-04-21 | 2021-06-18 | 中国一冶集团有限公司 | Tunnel primary support steel arch frame vertical fixing structure and construction method thereof |
-
2019
- 2019-10-22 CN CN201921779103.7U patent/CN210714728U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983492A (en) * | 2021-04-21 | 2021-06-18 | 中国一冶集团有限公司 | Tunnel primary support steel arch frame vertical fixing structure and construction method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200609 Termination date: 20211022 |