CN215292531U - Tunnel excavation steel bow member installation auxiliary device - Google Patents
Tunnel excavation steel bow member installation auxiliary device Download PDFInfo
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- CN215292531U CN215292531U CN202121478283.2U CN202121478283U CN215292531U CN 215292531 U CN215292531 U CN 215292531U CN 202121478283 U CN202121478283 U CN 202121478283U CN 215292531 U CN215292531 U CN 215292531U
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Abstract
The utility model discloses a tunnel excavation steel arch center installation auxiliary device, which comprises a positioning rod, wherein a base is fixed at the bottom of the positioning rod; the positioning rod is internally of a hollow structure, an elongated slot is vertically formed in the surface of the middle part of the positioning rod, a first positioning seat is fixed on one side of the upper end part of the positioning rod, an expansion rod is movably sleeved in the hollow structure of the positioning rod, a second positioning seat is arranged on one side of the lower end of the expansion rod, and the second positioning seat extends out of the elongated slot of the positioning rod; the first positioning seat is connected with a hook at the upper end of the electric hoist, and a hook at the lower end of the electric hoist is connected with the second positioning seat; the upper end of the telescopic rod is provided with a supporting seat. The device makes the telescopic device through locating lever and telescopic link to adopt electric block to carry out defeated power, thereby make the device can be relaxed under the manpower effect prop long, thereby reach and lift and support the effect of location to the steel bow member.
Description
Technical Field
The utility model belongs to the technical field of building tool, concretely relates to tunnel excavation steel bow member installation auxiliary device.
Background
The existing tunnel excavation can adopt a combination of a three-pilot-hole method, a three-step method and an upper-step CD method, and when the CD method is adopted to construct a tunnel, the steel arch needs to be installed quickly after the tunnel face excavation is finished. The traditional steel arch center is installed by adopting manual lifting and then supporting by using supports such as steel pipes and the like. Because the steel bow member is the quality of self heavier, it is comparatively inconvenient by the workman lift installation for a long time to there is certain potential safety hazard. And when the steel arch frame stands up, the length of the supporting steel pipe below cannot be guaranteed to be just suitable for each time, so that the limited factors are more, and the rapid construction is not facilitated.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem that exists among the prior art, the utility model provides a tunnel excavation steel bow member installation auxiliary device. The to-be-solved technical problem of the utility model is realized through following technical scheme:
an auxiliary device for installing a steel arch center for tunnel excavation comprises a positioning rod, wherein a base is fixed at the bottom of the positioning rod; the positioning rod is internally of a hollow structure, an elongated slot is vertically formed in the surface of the middle part of the positioning rod, a first positioning seat is fixed on one side of the upper end part of the positioning rod, an expansion rod is movably sleeved in the hollow structure of the positioning rod, a second positioning seat is arranged on one side of the lower end of the expansion rod, and the second positioning seat extends out of the elongated slot of the positioning rod; the first positioning seat is connected with a hook at the upper end of the electric hoist, and a hook at the lower end of the electric hoist is connected with the second positioning seat; the upper end of the telescopic rod is provided with a supporting seat.
Furthermore, an arc-shaped groove is formed in the upper end face of the first positioning seat, and a hook at the upper end of the electric hoist is hung in the arc-shaped groove; the lower end face of the second positioning seat is provided with an arc-shaped groove, and a hook at the lower end of the electric hoist is hooked in the arc-shaped groove.
Further, the supporting seat comprises a supporting rod and a stop lever, the supporting rod is horizontally fixed at the upper end of the telescopic rod, and the stop lever is vertically arranged at two ends of the supporting rod.
The utility model has the advantages that:
1. the utility model is a telescopic device made by the positioning rod and the telescopic rod, and the electric hoist is used for force transmission, so that the device can be easily lengthened under the action of manpower, thereby achieving the functions of lifting, supporting and positioning the steel arch frame;
2. this auxiliary device convenient to use, improvement workman that can show the operating efficiency in the middle of the construction, practiced thrift the manpower, reduced steel bow member installation time, brought good economic benefits.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic structural view of the positioning rod of the present invention;
FIG. 2 is a schematic structural view of the telescopic rod of the present invention;
fig. 3 is a schematic structural view of the present invention in an inoperative state;
fig. 4 is a schematic structural diagram of the present invention in an operating state.
Description of reference numerals:
1-positioning a rod; 2-a base; 3, a telescopic rod; 4-electric hoist; 5-a support seat; 1-1-long groove; 1-2-a first positioning seat; 3-1-a second positioning seat; 5-1-support bar; 5-2-stop lever.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the present invention is not limited thereto.
Referring to fig. 1 to 4, the utility model provides a tunnel excavation steel arch center installation auxiliary device, which comprises a positioning rod 1, wherein a base 2 is fixed at the bottom of the positioning rod 1, the positioning rod 1 is internally of a hollow structure, an elongated slot 1-1 is vertically arranged on the surface of the middle part of the positioning rod 1, a first positioning seat 1-2 is fixed at one side of the upper end part of the positioning rod 1, an expansion rod 3 is movably sleeved in the hollow structure of the positioning rod 1, a second positioning seat 3-1 is arranged at one side of the lower end of the expansion rod 3, and the second positioning seat 3-1 extends out of the elongated slot 1-1 of the positioning rod 1; the first positioning seat 1-2 is connected with a hook at the upper end of the electric hoist 4, and a hook at the lower end of the electric hoist 4 is connected with the second positioning seat 3-1; the upper end of the telescopic rod 3 is provided with a supporting seat 5. And opening a switch of the electric hoist 4, so that a hook at the lower end of the electric hoist 4 drives the second positioning seat 3-1 to move upwards along the long groove 1-1 of the positioning rod 1, meanwhile, the telescopic rod 3 drives the supporting seat 5 to move upwards, and after the steel arch is lifted to a set position through the supporting seat 5, the steel arch is subjected to auxiliary positioning.
Further, the upper end face of the first positioning seat 1-2 is provided with an arc-shaped groove, and a hook at the upper end of the electric hoist 4 is hung in the arc-shaped groove; the lower end surface of the second positioning seat 3-1 is provided with an arc-shaped groove; the lower end hook of the electric hoist 4 is hooked in the arc-shaped groove, so that the electric hoist 4 is prevented from sliding off the first positioning seat 1-2 and the second positioning seat 3-1 when in use.
Further, the supporting seat 5 comprises a supporting rod 5-1 and a blocking rod 5-2, the supporting rod 5-1 is horizontally fixed at the upper end of the telescopic rod 3 and is perpendicular to the telescopic rod 3, and the blocking rod 5-2 is vertically arranged at two ends of the supporting rod 5-1 and is used for preventing the supporting rod 5-1 from slipping off the steel arch when the steel arch is positioned.
The time that the workman spent when installing the bow member around using this auxiliary device through the contrast to and the influence of installation bow member time to excavation circulation, can obtain the use of device through calculating and can bring good economic benefits, specific contrast data is shown as table 1:
TABLE 1 comparison of parameters before and after use of the device
According to the calculation data, the labor cost for installing the arch centering each day can be saved by 900 yuan, and the construction period can be saved by 40 minutes for installing each arch centering.
Assuming that a tunnel is 1 kilometer long, the whole line is excavated by a CD method, and the labor cost can be saved by adopting the installation process of the rear arch frame of the device:
the construction period can be saved:
therefore, the auxiliary device obviously improves the operation efficiency of workers in the construction process and can bring good economic benefits.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (3)
1. The auxiliary device for installing the steel arch centering for tunnel excavation is characterized by comprising a positioning rod, wherein a base is fixed at the bottom of the positioning rod; the positioning rod is internally of a hollow structure, an elongated slot is vertically formed in the surface of the middle part of the positioning rod, a first positioning seat is fixed on one side of the upper end part of the positioning rod, an expansion rod is movably sleeved in the hollow structure of the positioning rod, a second positioning seat is arranged on one side of the lower end of the expansion rod, and the second positioning seat extends out of the elongated slot of the positioning rod; the first positioning seat is connected with a hook at the upper end of the electric hoist, and a hook at the lower end of the electric hoist is connected with the second positioning seat; the upper end of the telescopic rod is provided with a supporting seat.
2. The tunnel excavation steel arch mounting auxiliary device of claim 1, wherein the upper end surface of the first positioning seat has an arc-shaped groove, and the upper end hook of the electric hoist is hung in the arc-shaped groove; the lower end face of the second positioning seat is provided with an arc-shaped groove, and a hook at the lower end of the electric hoist is hooked in the arc-shaped groove.
3. The installation auxiliary device for the tunnel excavation steel arch of claim 1, wherein the supporting base comprises a supporting rod and a stop rod, the supporting rod is horizontally fixed at the upper end of the telescopic rod, and the stop rod is vertically arranged at two ends of the supporting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121478283.2U CN215292531U (en) | 2021-06-30 | 2021-06-30 | Tunnel excavation steel bow member installation auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121478283.2U CN215292531U (en) | 2021-06-30 | 2021-06-30 | Tunnel excavation steel bow member installation auxiliary device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215292531U true CN215292531U (en) | 2021-12-24 |
Family
ID=79519843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121478283.2U Active CN215292531U (en) | 2021-06-30 | 2021-06-30 | Tunnel excavation steel bow member installation auxiliary device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215292531U (en) |
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2021
- 2021-06-30 CN CN202121478283.2U patent/CN215292531U/en active Active
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