CN202882954U - U-shaped steel support - Google Patents
U-shaped steel support Download PDFInfo
- Publication number
- CN202882954U CN202882954U CN 201220475999 CN201220475999U CN202882954U CN 202882954 U CN202882954 U CN 202882954U CN 201220475999 CN201220475999 CN 201220475999 CN 201220475999 U CN201220475999 U CN 201220475999U CN 202882954 U CN202882954 U CN 202882954U
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- CN
- China
- Prior art keywords
- shaped steel
- support
- wedge
- shaped
- shape sleeve
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a U-shaped steel support and belongs to mine support equipment. The support is in an ellipsoidal and totally-closed structure as a whole and formed by butt joint of four sections of circular-arc-shaped U-shaped steel bodies with different curvature radiuses. A locking hoop is welded at the upper end of an upright beam, a U-shaped friction block and a wedge-shaped plate are installed in the locking hoop, and a top beam is inserted into the locking hoop and can be locked through the U-shaped friction block and the wedge-shaped plate. The length of the portion of the top portion, entering into the locking hoop, can be adjusted, and therefore the external size of the support can be adjusted to be suitable for tunnel cross-sections in different sizes. A wedge-shape sleeve is welded at the lower end of the upright beam, a bottom beam is inserted into the wedge-shape sleeve, with gradual increase of pressure of tunnel surrounding rock, the length of the portion of the bottom beam, inserted into the wedge-shape sleeve, is also gradually increased, and therefore the support has contractibility, and meanwhile, with the wedge-caulking effect of the inclined plane of the wedge-shape sleeve inner wall, the support has a resistance increasing character in the process of contracting.
Description
Technical field
The utility model relates to a kind of U-shaped steel bracket, is applicable to soft rock roadway support, belongs to mine support equipment.
Background technology
At present, flange beam stand and U-shaped steel bracket are generally adopted in the supporting of coal mine down-hole tunnel.The form of structure of flange beam stand mostly is trapezoidal, formed by two supporting legs and a crossbeam, the characteristics of this support be can supporting drift section large, but its pressure from surrounding rock that can bear is less, yielding, less stable.The form of structure of U-shaped steel bracket has straight leg semicircle, three-core arch and circle etc.Straight leg semi-circular bracket is comprised of two straight legs and a semicircular arch, because the horizontal force that straight shank branch can bear is less, so this support is only applicable to roof pressure greatly and the less tunnel of horizontal force.The three-core arch support is made of the U-shaped steel overlap joint of two or three radius of curvature, and therefore, its structure and applicable elements are similar to straight leg semi-circular bracket.Circular support belongs to totally-enclosed support, and the pressure at right angle that it can bear and horizontal pressure force are all very large, and the pucking (base plate is heaved) in tunnel is had certain control action, but the drift section that it was suitable for is less.
Summary of the invention
Bear the less and applicable little deficiency of section of circular support of horizontal force in order to overcome straight leg semi-circular bracket and three-core arch support, the utility model provides a kind of U-shaped steel bracket, this support not only can bear larger horizontal force, and can adapt to larger drift section.
The technical scheme that its technical problem that solves the utility model adopts is: the general structure of support is oval full-closed structure, is formed by the U-shaped steel docking of the circular arc of 4 sections different curvature radius, and the radius of curvature of each arc section is determined according to the drift section size; 2 sections larger U-shaped steel of circular arc of radius of curvature are the vertical beam of support, and 2 sections less U-shaped steel of circular arc of radius of curvature are respectively back timber and the bottom girder of support; At locking clip of the upper end of each vertical beam welding, a U-shaped brake pad and a clapboard are installed in the locking clip, clapboard is connected with chain with locking clip, and the U-shaped brake pad is consistent with the bottom shape of U-shaped steel, and the key groove of clapboard is 5 °; Insert respectively in two locking clips at the two ends of back timber, can lock back timber by U-shaped brake pad and clapboard, and back timber enters the length of locking clip and can regulate, thereby the appearance and size of adjusting support is to adapt to the drift sections of different sizes; At wedge shape sleeve of the lower end of each vertical beam welding, the section configuration of wedge shape sleeve is consistent with the section configuration of U-shaped steel, and U-shaped steel bushing can be lived, and the inwall of wedge shape sleeve wall in the outer part is an inclined-plane (1: 50); Insert respectively in two wedge shape sleeves at the bottom girder two ends, along with the gradually increase of roadway surrounding rock pressure, the length that bottom girder inserts the wedge shape sleeve also increases gradually, so that support has contractibility, simultaneously because the wedge action on wedge shape sleeve lining inclined-plane has the resistance of increasing characteristic during the support indentation.
The beneficial effects of the utility model are that support both can bear larger pressure at right angle, can bear larger horizontal pressure force again, can prevent Floor Heave in Roadway simultaneously, and can adapt to larger drift section; The locking mode that adopts U-shaped brake pad and clapboard to form, reliable operation, easy to adjust; Wedge-shaped sleeve cartridge type connected mode is so that support has contractibility and increases the resistance characteristic.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described further.
Fig. 1 is structure chart of the present utility model.
Fig. 2 is the A--A sectional view of Fig. 1.
Fig. 3 is the B--B sectional view of Fig. 1.
1. back timbers among the figure, 2. clapboard, 3. chain, 4. locking clip, 5. vertical beam, 6. wedge shape sleeve, 7. bottom girder, 8.U shape brake pad.
The specific embodiment
In Fig. 1, form an ellipse support by the U-shaped steel docking of the circular arc of 4 sections different curvature radius, the radius of curvature of each arc section is determined according to the drift section size.A upper end welding locking clip (4) of vertical beam (5) is installed a U-shaped brake pad (8) and a clapboard (2) (seeing Fig. 2) in the locking clip (4), clapboard (2) is connected with locking clip (4) with chain (3); A lower end welding wedge shape sleeve (6) of vertical beam (5), the section configuration of wedge shape sleeve (6) is consistent with the section configuration of U-shaped steel, and U-shaped steel bushing can be lived (seeing Fig. 3), wedge shape sleeve (6) inwall wall in the outer part is an inclined-plane (1: 50).Insert respectively in two locking clips (4) at the two ends of back timber (1), and lock with U-shaped brake pad (8) and clapboard (2), and insert respectively in two wedge shape sleeves (6) at the two ends of bottom girder (7), forms an ellipse support.In the utility model course of work, along with roadway surrounding rock pressure increases gradually, the length that bottom girder (7) inserts wedge shape sleeve (6) also increases gradually, so that support has contractibility, because the wedge action on the inwall inclined-plane of wedge shape sleeve (6) has the resistance of increasing characteristic, in addition during the support indentation, adjust the length that back timber (1) enters locking clip (4), can regulate the appearance and size of support to adapt to the drift section of different sizes.
Claims (7)
1. U-shaped steel bracket, formed by the U-shaped steel docking of the circular arc of 4 sections different curvature radius, 2 sections larger U-shaped steel of circular arc of radius of curvature are the vertical beam (5) of support, 2 sections less U-shaped steel of circular arc of radius of curvature are respectively back timber (1) and the bottom girder (7) of support, it is characterized in that: 4 sections U-shaped steel of circular arc connect into ellipsoidal structure by locking clip (4) and wedge shape sleeve (6).
2. U-shaped steel bracket according to claim 1 is characterized in that: a upper end welding locking clip (4) of vertical beam (5).
3. U-shaped steel bracket according to claim 1 is characterized in that: a lower end welding wedge shape sleeve (6) of vertical beam (5).
4. U-shaped steel bracket according to claim 2 is characterized in that: a U-shaped brake pad (8) and a clapboard (2) are installed in the locking clip (4).
5. U-shaped steel bracket according to claim 3, it is characterized in that: the inwall wall in the outer part of wedge shape sleeve (6) is an inclined-plane.
6. U-shaped steel bracket according to claim 4, it is characterized in that: clapboard (2) is connected with chain (3) with locking clip (4).
7. U-shaped steel bracket according to claim 4, it is characterized in that: the key groove of clapboard (2) is 5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220475999 CN202882954U (en) | 2012-09-05 | 2012-09-05 | U-shaped steel support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220475999 CN202882954U (en) | 2012-09-05 | 2012-09-05 | U-shaped steel support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202882954U true CN202882954U (en) | 2013-04-17 |
Family
ID=48074394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220475999 Expired - Fee Related CN202882954U (en) | 2012-09-05 | 2012-09-05 | U-shaped steel support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202882954U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470279A (en) * | 2013-09-15 | 2013-12-25 | 湘潭大学 | U-shaped steel bracket capable of actively controlling deformation of surrounding rocks |
| CN105422145A (en) * | 2015-12-30 | 2016-03-23 | 辽宁工程技术大学 | U-steel yieldable support with resistance increase and energy absorption functions |
-
2012
- 2012-09-05 CN CN 201220475999 patent/CN202882954U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470279A (en) * | 2013-09-15 | 2013-12-25 | 湘潭大学 | U-shaped steel bracket capable of actively controlling deformation of surrounding rocks |
| CN103470279B (en) * | 2013-09-15 | 2016-02-17 | 湘潭大学 | Can the U-shaped steel bracket of ACTIVE CONTROL surrouding rock deformation |
| CN105422145A (en) * | 2015-12-30 | 2016-03-23 | 辽宁工程技术大学 | U-steel yieldable support with resistance increase and energy absorption functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20130905 |