CN87207098U - Telescopic joist chock - Google Patents
Telescopic joist chock Download PDFInfo
- Publication number
- CN87207098U CN87207098U CN 87207098 CN87207098U CN87207098U CN 87207098 U CN87207098 U CN 87207098U CN 87207098 CN87207098 CN 87207098 CN 87207098 U CN87207098 U CN 87207098U CN 87207098 U CN87207098 U CN 87207098U
- Authority
- CN
- China
- Prior art keywords
- contract
- snap ring
- column
- back timber
- telescopic
- 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.)
- Ceased
Links
- 239000003245 coal Substances 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 150000002506 iron compounds Chemical class 0.000 claims description 5
- 238000007373 indentation Methods 0.000 claims 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
- 239000010959 steel Substances 0.000 abstract description 10
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model provides a telescopic prop made of an I-steel beam, which is suitable for a mine in particular for a tunnel prop of coal mine. In order to enhance the performance of the I-steel beam, the utility model makes the most of I-steel, the utility model adopts a snap ring (5), a telescopic girder (3), and a telescopic pole (4), and the prop kinks together for realizing telescopic to avoid of being damaged under stress. Compared with other I-steel beam, the telescopic prop made of an I-steel beam has the advantages of first supporting constant stop high and multiplexing rate high. Compared with U sectional steel beam, the telescopic prop made of an I-steel beam has the advantage of low cost.
Description
Be applicable to the roadway support of mine, particularly coal mine.
The prior art of this technical field can be consulted " several New-supports that the tunnel of returning is used " that Xi'an Mining Technology Inst groups of holders in 1985 is compiled.At present, U shaped steel friction compressibile support is adopted in external development heading mostly, is domesticly also wideling popularize.But U shaped steel costs an arm and a leg, and in one period from now on, the consumption of i iron will be greater than U shaped steel at home.
In view of the problem of above-mentioned existence, the purpose of this utility model is that design a kind ofly can be applicable to various mine workings, has the high constant-resistance of support just, and cost is low, has contractibility, the novel i iron support that reusability is high.
The utility model is assembled by back timber 1, column 2, the beam 3 that can contract, can contract post 4 and snap ring more than 5 parts, and back timber, column, the post that can contract are i iron.Back timber 1 is that curved member is held on top; On the compound plate of the upper end of column 2 and the post 4 lower end i iron that can contract, a breach is arranged respectively, with one one of the longitudinal section of clamp (11) or all coincide down of snap ring (Fig. 3, Fig. 4), so that snap ring 5 to be installed.With snap ring 5 column 2 and the post 4 that can contract are linked to be a member, bear pressure and the other load that transmits of side that back timber 1 transmits.The post (4) that can contract is enclosed within the ring 7 of the beam (Fig. 2) that can contract, can contract beam 3 again by bind round 9 and snap ring 5 join with back timber 1, so engaged between the support each several part, also be convenient to simultaneously dismantle.Can contract between post 4 and the back timber 1 by hoop 9 on the beam 3 that can contract and gripper shoe 8 transfer function power, form articulated structure.In addition, hoop 9 also has the effect that prevents back timber 1 swing.The lateral pressure that is subjected to when column 2 is during greater than the frictional force of snap ring 5, and the beam 3 that can contract will slide along back timber 1, thereby prevent that column 2 from bending.The beam 3 that can contract itself does not bear moment of flexure, refuses to contract preventing.The axial force that is subjected to when the post 4 that can contract is during greater than the frictional force of snap ring 5, and the post 4 that can contract will glide along column 2, and back timber 1 will be sunk, thereby prevent that back timber 1 from bending.The eccentric axial compression of 2 on post 4 and column of can contracting also can be offset a part of moment of flexure, helps improving the stress performance of support.Owing to can contract between beam 3 and the back timber 1, all be connected between can contract post 4 and the column 2, and the frictional resistance of snap ring 5 is constant, so certain resistance is arranged during slip with snap ring.The active force that is subjected to when support can stop to slide, to keep certain stress performance and tunnel size during less than frictional resistance at any time.In case of necessity, the beam 3 that contracts of the present utility model, the post 4 that can contract can omit one of them or all omit, and snap ring 5 directly is connected with back timber 1 or column 2, play the effect of can contracting.In addition, can the contract position of the beam 3 and the post 4 that can contract also can exchange.
The utlity model has the performance of the high constant-resistance of support just; Owing to all adopt i iron, particularly can make full use of the short i iron of cutting remainder, therefore, to compare with other supports, manufacturing cost reduces greatly, and material source is extensive; Support can be repeatedly multiplexing; Snap ring 5 intensity that adopted are big, simple in structure, and frictional force is constant, and the reusability height is easy to use.The utility model is mainly used in trapezoid support, also can be made into arch support or other closed supports.
Fig. 1 is a contractibility i iron support front view.Fig. 2 is the front view of the beam 3 that can contract.Fig. 3 is the front view of snap ring 5, and Fig. 4 is its vertical view.
Accompanying drawing has provided embodiment of the present utility model.Support comprises back timber 1, column 2, the beam 3 that can contract, post 4 and snap ring more than 5 parts can contract.Back timber, column and the post that can contract are i iron.Can contract beam (Fig. 2) by beam body 6, shape as
Ring 7, gripper shoe 8 and bind round 9 and form, be full genus manufacturing, beam body 6 can be an i iron, is linked to be an integral body by welding between them.On column 2 upper ends, post 4 lower ends of can contracting, beam body 6 i iron compound plates a breach is arranged respectively, its shape and snap ring (Fig. 3) longitudinal section of clamp 11 down coincide one one or whole, so that snap ring 5 is installed.Snap ring 5 has last clamp 10 and following clamp 11 as shown in Figure 3, Figure 4.In this embodiment, need 6 snap rings altogether.Snap ring can also can adopt injection molding with full casting or the forging forming of belonging to.
Claims (6)
1, a kind of mine that is applicable to, particularly the contractibility i iron support of coal mine roadway support includes back timber 1, column 2, and feature of the present utility model is: have snap ring 5, it is installed on the indentation, there of the upper end i iron compound plate of column 2, and 1 of back timber and snap ring 5 connect as one.
2, a kind of mine that is applicable to, the contractibility i iron support of coal mine roadway support particularly, include back timber 1, column 2, feature of the present utility model is: have the snap ring 5 and the beam 3 that can contract, snap ring 5 is installed on the indentation, there of column 2 upper end i iron compound plates and the indentation, there of the beam 3 upper beam bodies 6 that can contract, the snap ring that is positioned at column 2 is connected with the beam 3 that can contract, and 1 of back timber directly enters snap ring on the beam 3 that can contract.
3, a kind of mine that is applicable to, the contractibility i iron support of coal mine roadway support particularly, include back timber 1, column 2, feature of the present utility model is: have snap ring 5, the beam 3 and the post 4 that can contract can contract, snap ring 5 is installed on the upper end i iron compound plate of column 2, the lower end of the post 4 i iron compound plates that can contract, the indentation, there of beam 3 upper ends of can contracting respectively; The post 4 that can contract is connected with column 2 by snap ring 5, and the other end is enclosed within the ring 7 of the beam 3 that can contract, and 1 of back timber directly enters the snap ring 5 on the beam 3 that can contract.
4, according to claim 1 or 2 or 3 described supports, it is characterized in that: snap ring 5 has last clamp 10 and following clamp 11, and is an integral body.
5,2 or 3 described supports as requested is characterized in that: the beam 3 that can contract is by beam body 6, ring 7, gripper shoe 8 and bind round 9 and constitute, and is an integral body.
6, support according to claim 4 is characterized in that: the beam 3 that can contract is by beam body 6, ring 7, gripper shoe 8 and bind round 9 and constitute, and is an integral body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87207098 CN87207098U (en) | 1987-05-13 | 1987-05-13 | Telescopic joist chock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87207098 CN87207098U (en) | 1987-05-13 | 1987-05-13 | Telescopic joist chock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87207098U true CN87207098U (en) | 1988-03-09 |
Family
ID=4822576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87207098 Ceased CN87207098U (en) | 1987-05-13 | 1987-05-13 | Telescopic joist chock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87207098U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493824A (en) * | 2011-12-12 | 2012-06-13 | 庄炳元 | Retractable trapezoid support with cushion blocks |
| CN105114108A (en) * | 2015-08-19 | 2015-12-02 | 遵义庄氏矿井支护技术开发有限公司 | Short stand column shrinkable shed bracket |
-
1987
- 1987-05-13 CN CN 87207098 patent/CN87207098U/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493824A (en) * | 2011-12-12 | 2012-06-13 | 庄炳元 | Retractable trapezoid support with cushion blocks |
| CN102493824B (en) * | 2011-12-12 | 2014-04-02 | 庄炳元 | Retractable trapezoid support with cushion blocks |
| CN105114108A (en) * | 2015-08-19 | 2015-12-02 | 遵义庄氏矿井支护技术开发有限公司 | Short stand column shrinkable shed bracket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |