CN104863620A - Closed retractable I-shaped steel trapezoid bracket - Google Patents
Closed retractable I-shaped steel trapezoid bracket Download PDFInfo
- Publication number
- CN104863620A CN104863620A CN201510183892.8A CN201510183892A CN104863620A CN 104863620 A CN104863620 A CN 104863620A CN 201510183892 A CN201510183892 A CN 201510183892A CN 104863620 A CN104863620 A CN 104863620A
- Authority
- CN
- China
- Prior art keywords
- retractable
- closed
- shaped steel
- combined vertical
- pressure bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
Abstract
The invention provides a closed retractable I-shaped steel trapezoid bracket which comprises a top beam, combined vertical columns, retractable compression rods and a bottom beam, wherein the retractable compression rods are clamped on the combined vertical columns and the bottom beam through grooves in the two ends of the retractable compression rods and clamping pins on the combined vertical columns and the bottom beam. The closed retractable I-shaped steel trapezoid bracket has two-way retractable performance, can resist floor heave, and further enhance anti-side pressure capacity of the vertical columns, so that the support effect of the trapezoid bracket is improved, the application range is enlarged, under normal circumstances, the closed retractable I-shaped steel trapezoid bracket can replace non-closed or closed U-shaped steel brackets, mounting is convenient, consumption of a steel material is reduced, the support cost is reduced, and certain economic benefits and social benefits are realized.
Description
Technical field
The invention belongs to mine roadway support technical field, particularly one closed contractibility i iron trapezoid support.
Background technology
For a long time, mine roadway support field widely uses the non-enclosed i iron trapezoid support without bottom girder, does not have the performance of opposing floor lift in gallery.
" the simple and clear handbook of Chinese coal industry " (publication of Coal Industry Press's nineteen ninety-five) chapter 5 " exploitation " literary composition the 173 to 182 page, lists main mechanical characteristics and the applicable elements thereof of various flange beam stand and U-shaped steel bracket in its table 5 – 31.The specification that Ministry of Coal Industry of the former People's Republic of China (PRC) 1986 promulgates the 9 kinds of frame types totally 131 kinds of supports adopting domestic i iron and U-shaped steel to make is listed in table 5 – 32 to table 5 – 37.Disclosed trapezoid support is all without bottom girder, and when the tunnel amount of shifting near is large, the serious distension of base plate rises, and must adopt the supporting of enclosed U-shaped steel bracket, strengthens difficulty of construction, and consumes steel, increase support cost more.
Summary of the invention
Object of the present invention, is for above-mentioned i iron trapezoid support Problems existing, provides a kind of closed contractibility i iron trapezoid support.
Closed contractibility i iron trapezoid support of the present invention, be made up of based on " retractable trapezoid support with cushion blocks " (CN 102493824 A announces on 06 13rd, 2012) a back timber and two combined vertical poles, setting up end fine strain of millet and two can form by contractive pressure bar to the inclination of both sides, tunnel that two ends are provided with needling.
Closed contractibility i iron trapezoid support of the present invention, what include tilting to both sides, tunnel of arranging between the bottom of back timber, combined vertical pole, bottom girder and combined vertical pole and the two ends of bottom girder can contractive pressure bar.Can contractive pressure bar by upper boom, lower beam and be arranged at its depression bar between the two can contracting body, by bolt and clamping plate are fastening forms.The upper boom of contractive pressure bar, the end of lower beam can be provided with arc groove, combined vertical pole, bottom girder be provided with the bayonet lock of diameter and arc groove consistent size, can the two ends of contractive pressure bar be stuck in respectively on combined vertical pole and bottom girder by it.
Closed contractibility i iron trapezoid support of the present invention, not only there is two-way contractibility energy, and end distension can be resisted, also can strengthen the ability of column lateral pressure resistant, improve the supporting effect of support, expand its scope of application, generally alternative non-enclosed and enclosed U-shaped steel bracket, easy for installation, reduces rolled steel dosage, reduce support cost, there is certain economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the front view of inventive closure formula contractibility i iron trapezoid support;
Fig. 2 is A portion enlarged drawing in Fig. 1;
Fig. 3 is A – A sectional drawing in Fig. 2;
Fig. 4, be inventive closure formula contractibility i iron trapezoid support can the front view of contractive pressure bar.
Detailed description of the invention
Below in conjunction with above-mentioned attached Example, concrete detailed description in detail is done to the embodiment of inventive closure formula contractibility i iron trapezoid support.
Example shown in closed contractibility i iron trapezoid support of the present invention, include back timber 1, column can contracting body 2, combined vertical pole 3, bayonet lock 4, bottom girder 7, can contractive pressure bar 5, can contractive pressure bar 5 includes upper boom 8, bolt 9, clamping plate 10, depression bar can contracting body 11, lower beam 12.
Closed contractibility i iron trapezoid support of the present invention, the two ends of bottom girder 7 are provided with needling 6, for erection bracket.Can contractive pressure bar 5 by upper boom 8, lower beam 12 and be arranged at its depression bar between the two can contracting body 11, formed with clamping plate 10 are fastening by bolt 9.The upper boom 8 of contractive pressure bar 5, the end of lower beam 12 can be provided with arc groove 13, combined vertical pole 3, bottom girder 7 are respectively arranged with the bayonet lock 4 of diameter and arc groove 13 consistent size, the two ends of contractive pressure bar 5 can be stuck in combined vertical pole 3 respectively with on bottom girder 7 by it.
When closed contractibility i iron trapezoid support of the present invention is installed, first at base plate paving i iron bottom girder 7, and set up the retractable trapezoid support with cushion blocks be made up of back timber 1 and combined vertical pole 3 thereon, then can be stuck in combined vertical pole 3 with on bottom girder 7 by bayonet lock 4 by contractive pressure bar 4, finally loading onto depression bar can contracting body 11.
Claims (3)
1. a closed contractibility i iron trapezoid support, include back timber (1), combined vertical pole (3), can contractive pressure bar (5), bottom girder (7), what it is characterized in that being provided with between the bottom of combined vertical pole (3) and the two ends of bottom girder (7) to tilt to both sides, tunnel can contractive pressure bar (5).
2. trapezoid support according to claim 1, it is characterized in that can contractive pressure bar (5) by upper boom (8), lower beam (12) and be arranged at its depression bar between the two can contracting body (11), formed with clamping plate (10) are fastening by bolt (9).
3. trapezoid support according to claim 1, it is characterized in that the upper boom (8) of contractive pressure bar (5), the end of lower beam (12) arc groove (13) to be provided with, combined vertical pole (3), bottom girder (7) are provided with the bayonet lock (4) of diameter and arc groove (13) consistent size, the two ends of contractive pressure bar (5) combined vertical pole (3) can be stuck in respectively with on bottom girder (7) by it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510183892.8A CN104863620A (en) | 2015-04-18 | 2015-04-18 | Closed retractable I-shaped steel trapezoid bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510183892.8A CN104863620A (en) | 2015-04-18 | 2015-04-18 | Closed retractable I-shaped steel trapezoid bracket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104863620A true CN104863620A (en) | 2015-08-26 |
Family
ID=53909743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510183892.8A Pending CN104863620A (en) | 2015-04-18 | 2015-04-18 | Closed retractable I-shaped steel trapezoid bracket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104863620A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350990A (en) * | 2015-11-25 | 2016-02-24 | 安徽理工大学 | Mining support having double pressure indicating function |
| CN108412525A (en) * | 2018-05-21 | 2018-08-17 | 东莞市联洲知识产权运营管理有限公司 | A kind of supporting mechanism in mining hole |
| NL2027081A (en) * | 2020-10-15 | 2022-06-08 | Shandong Province Res Institute Of Coal Geology Planning And Exploration | Rock burst protection support with monitoring function |
-
2015
- 2015-04-18 CN CN201510183892.8A patent/CN104863620A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350990A (en) * | 2015-11-25 | 2016-02-24 | 安徽理工大学 | Mining support having double pressure indicating function |
| CN108412525A (en) * | 2018-05-21 | 2018-08-17 | 东莞市联洲知识产权运营管理有限公司 | A kind of supporting mechanism in mining hole |
| CN108412525B (en) * | 2018-05-21 | 2019-10-29 | 蔡天明 | A kind of supporting mechanism in mining hole |
| NL2027081A (en) * | 2020-10-15 | 2022-06-08 | Shandong Province Res Institute Of Coal Geology Planning And Exploration | Rock burst protection support with monitoring function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150826 |
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| WD01 | Invention patent application deemed withdrawn after publication |