CN213392199U - Adjustable tunnel primary support arch frame support cushion device - Google Patents
Adjustable tunnel primary support arch frame support cushion device Download PDFInfo
- Publication number
- CN213392199U CN213392199U CN202021650577.4U CN202021650577U CN213392199U CN 213392199 U CN213392199 U CN 213392199U CN 202021650577 U CN202021650577 U CN 202021650577U CN 213392199 U CN213392199 U CN 213392199U
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- screw rod
- sleeve
- adjusting nut
- adjustable
- bottom plate
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Abstract
The utility model relates to a tunnel just props up an arch centering and fills up device with adjustable, bottom plate and a roof that sets up including a level, a vertical welding screw rod in the middle of the bottom plate top surface, a spiro union adjusting nut on the screw rod, a vertical welding sleeve in the middle of the roof bottom surface, telescopic lower extreme cup joints on the screw rod, and telescopic external diameter is less than adjusting nut's external diameter. By rotating the adjusting nut, the sleeve length of the sleeve and the screw rod can be adjusted, so that the height of the supporting device can be adjusted, and the supporting requirements of different heights of the arch centering can be flexibly met.
Description
Technical Field
The utility model belongs to the technical field of the tunnel construction, when relating to carry out tunnel preliminary bracing, carry out the device that fills up to just propping up the bow member.
Background
After the tunnel is excavated and formed, in order to ensure the stable structure, a steel arch frame is adopted for primary support. The radian of the steel arch frame is consistent with that of the cross section of the tunnel, and a preset gap is kept between the steel arch frame and the surrounding rock of the tunnel during installation. Because in the tunnel excavation process, there is uncertainty in soft country rock excavation and better country rock smooth blasting, when the bow member was installed, when the clearance was too big between preliminary strut bow member and the country rock, will set up the cushion at the bow member both ends and heighten the bow member to avoid reducing because the settlement that the country rock bearing capacity is not enough produces. The common cushion block is a precast concrete block, the height of the precast concrete block is fixed, the adaptability is poor, and usually, when construction is carried out, if the height of the arch frame is still not in accordance with the requirement after the concrete cushion block is installed on the arch frame, hole slag or small stone blocks are often adopted to support the cushion under the cushion block, but the arch frame is easily sunk as a result, and initial support cracking can be caused in severe cases.
Disclosure of Invention
The utility model aims at the above-mentioned problem, a height-adjustable's tunnel is an bow member and is supported and fill up device just is provided to nimble adaptation bow member difference is supported and is filled up the high requirement, and guarantees to support and fill up stable in structure, prevents that the bow member from sinking.
The technical scheme of the utility model as follows:
the utility model provides a tunnel is bow member and is supported pad device just with adjustable which characterized in that: the adjustable screw rod is characterized by comprising a bottom plate and a top plate which are horizontally arranged, wherein a screw rod is vertically welded in the middle of the top surface of the bottom plate, an adjusting nut is screwed on the screw rod, a sleeve is vertically welded in the middle of the bottom surface of the top plate, the lower end of the sleeve is sleeved on the screw rod, and the outer diameter of the sleeve is smaller than that of the adjusting nut.
The utility model discloses simple structure, convenient to use. The height of the supporting device is adjusted by adjusting the sleeve length of the screw rod and the sleeve, so that the supporting device can flexibly meet the supporting requirements of different heights of the arch frame; the utility model has stable structure and stable support cushion, can effectively prevent the arch center from settling, and ensures the construction quality of the primary support; the device can be repeatedly used, and the cost is saved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the usage state of the present invention.
Detailed Description
As shown in fig. 1, the utility model discloses a bottom plate 1 and a roof 2 that a level set up, a vertical welding screw rod 3 in the middle of the 1 top surface of bottom plate, an adjusting nut 4 of spiro union on the screw rod, a vertical welding sleeve 5 in the middle of the 2 bottom surfaces of roof, the lower extreme of sleeve 5 cup joints on the screw rod 3, and the external diameter of sleeve 5 is less than adjusting nut 4's external diameter.
Above-mentioned structure, through rotating adjusting nut, the length of cup jointing of adjustable sleeve and screw rod to the height of adjustment roof.
In order to prevent the top plate from falling off caused by excessive jacking of the sleeve, the upper end of the screw rod can be provided with a thread-free section with a certain length.
In order to facilitate the rotation of the adjusting nut, rotating handles 6 are welded on two opposite sides of the adjusting nut.
As shown in fig. 2, the utility model discloses during the use, the bottom plate supports subaerially at the level, supports the both ends of steel bow member 7 respectively on two roof 2 that prop up the device, when needing the height of adjustment bow member 7, through rotating handle 6 rotate adjusting nut can.
Claims (3)
1. The utility model provides a tunnel is bow member and is supported pad device just with adjustable which characterized in that: the adjustable screw rod is characterized by comprising a bottom plate and a top plate which are horizontally arranged, wherein a screw rod is vertically welded in the middle of the top surface of the bottom plate, an adjusting nut is screwed on the screw rod, a sleeve is vertically welded in the middle of the bottom surface of the top plate, the lower end of the sleeve is sleeved on the screw rod, and the outer diameter of the sleeve is smaller than that of the adjusting nut.
2. The adjustable tunnel primary arch support cushion device according to claim 1, wherein: the upper end of the screw rod is provided with a thread-free section with a certain length.
3. The adjustable tunnel primary arch support cushion device according to claim 1, wherein: and the two opposite sides of the adjusting nut are welded with rotating handles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021650577.4U CN213392199U (en) | 2020-08-10 | 2020-08-10 | Adjustable tunnel primary support arch frame support cushion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021650577.4U CN213392199U (en) | 2020-08-10 | 2020-08-10 | Adjustable tunnel primary support arch frame support cushion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213392199U true CN213392199U (en) | 2021-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021650577.4U Active CN213392199U (en) | 2020-08-10 | 2020-08-10 | Adjustable tunnel primary support arch frame support cushion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213392199U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856651A (en) * | 2022-05-06 | 2022-08-05 | 河南永锦能源有限公司云盖山煤矿一矿 | Auxiliary device for mounting underground coal mine protective net and construction method |
| CN115075293A (en) * | 2022-07-15 | 2022-09-20 | 中铁二十五局集团有限公司 | Pipe gallery template mobile device |
-
2020
- 2020-08-10 CN CN202021650577.4U patent/CN213392199U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856651A (en) * | 2022-05-06 | 2022-08-05 | 河南永锦能源有限公司云盖山煤矿一矿 | Auxiliary device for mounting underground coal mine protective net and construction method |
| CN115075293A (en) * | 2022-07-15 | 2022-09-20 | 中铁二十五局集团有限公司 | Pipe gallery template mobile device |
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