CN2080559U - Clamp for u-steel prop of pit - Google Patents
Clamp for u-steel prop of pit Download PDFInfo
- Publication number
- CN2080559U CN2080559U CN 90221616 CN90221616U CN2080559U CN 2080559 U CN2080559 U CN 2080559U CN 90221616 CN90221616 CN 90221616 CN 90221616 U CN90221616 U CN 90221616U CN 2080559 U CN2080559 U CN 2080559U
- Authority
- CN
- China
- Prior art keywords
- shaped steel
- card cable
- cable
- main
- clamping cable
- 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.)
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Abstract
The utility model relates to a clamping cable for a U-shaped steel roadway supporting stand for supporting and protecting underwell roadway in coal mines, which overcomes the problem of the looseness of the clamping cable after the U-shaped steel supporting stand primarily slides in the prior art. The sliding resistance of the supporting stand is enhanced, and the clamping cable for a U-shaped steel roadway supporting stand is favorable for exerting the effects of heavy steel and high-strength steel support stands. The clamping cable is composed of a pressing component and a locking component, and also comprises a main clamping cable (1) and an auxiliary clamping cable (2), wherein, the main clamping cable is clamped on the overlapping section of two pieces of sectional steel, and the auxiliary clamping cable which is arranged at the top end of the overlapping section only clamps one piece of sectional steel. The clamping cable can be in screw thread connection, or in wedged connection or other forms of connections. The clamping cable for a U-shaped steel roadway supporting stand can be used for supporting and protecting the roadway of coal mines, metallurgy mines and underground engineering.
Description
The utility model is the U shaped steel excavation support card cable that is used for roadway support under the coal mine.
U shaped steel excavation support is made up of plurality of sections U shaped steel, and U shaped steel excavation support card cable is the connector that connects each section U shaped steel.The card cable is installed in the overlap joint section of U shaped steel, and two U shaped steel are clamped.Produce frictional resistance between the two U shaped steel and between U shaped steel and the card cable during rack bearing, form the slip resistance of support.When the axial force that is subjected to when U shaped steel surpassed slip resistance, overlap joint section two shaped steel produced relatively and slide, and support is compressed, and preventing the plastic strain of entire bracket, the support force that this moment is outer carries with the support generation reaches new balance.When outside carry when increasing again, support compresses again, so makes support force constantly reach new balance repeatedly.
Existing card cable is clamped in the overlap joint section of two U shaped steel, form by compressing member and locking member, the part that has be compressing member be again locking member, mostly be and be threaded or wedge-type connects.The card cable that is threaded has upper and lower compressing member and screw-threaded coupling part, by the screw-threaded coupling part upper and lower compressing member locking is made tight two shaped steel of card cable clip.The card cable that wedge-type connects has compressing member and chock, and the hole of squeezing on the compressing member by wedge makes tight two shaped steel of card cable clip.
Existing card cable has the following disadvantages:
1, the insufficient clamping force of card cable generation causes the slip resistance of excavation support less.Improve along with the model of U shaped steel adds hard intensity, corresponding requirements card cable has higher clamping force.Existing card cable has only the hitting power that increases fastening bolt moment of torsion or voussoir could improve clamping force.Because increasing the hitting power of bolt torque or voussoir, the underground work environmental limit often is restricted.
2, may cause the card cable to get loose after the first slip of shaped steel overlap joint section.Because shaped steel mismachining tolerance and distortion make that two shaped steel contact surfaces of overlap joint section are not parallel when the card cable clip is tight, gap when two shaped steel take place to slide between the contact surface will change, thereby the supporting capacity that causes card cable to get loose to make support descends even inefficacy.
The purpose of this utility model is to overcome the deficiency of above-mentioned prior art, provides a kind of clamping force big, the U shaped steel excavation support card cable that shaped steel does not get loose after sliding.
The purpose of this utility model can reach by following measure:
The card cable is by the main card cable and pay a card cable and forms, and the main card cable is connected to each other with paying a card cable, and the main card cable is installed in U shaped steel overlap joint section, clamps two shaped steel, pays a card cable and is installed in the top that overlaps section, only clamps a shaped steel.Main, a pair card cable can be threaded, wedge-type connects or other form.This structural improvement makes the clamping force of an original card cable become two clamping forces of blocking cables, the slip resistance that has improved support greatly.Only clamp a shaped steel owing to pay a card cable, thereby overcome that two shaped steel faying surface gaps change and the card cable that causes is loosening.
The drawing of accompanying drawing is described as follows:
Fig. 1 is a kind of U shaped steel excavation support card cable I that is threaded, and Fig. 2 is the A-A of this figure
Fig. 2 is the sectional view of A-A position among Fig. 1.
Fig. 3 is the sectional view of B-B position among Fig. 1.
Fig. 4 is a kind of U shaped steel excavation support card cable II that is threaded.
Fig. 5 is the sectional view of C-C position among Fig. 4.
Fig. 6 is the sectional view of D-D position among Fig. 4.
Fig. 7 is the U shaped steel excavation support card cable III that a kind of wedge-type connects.
Fig. 8 is the sectional view of E-E position among Fig. 7.
Fig. 9 is the sectional view of F-F position among Fig. 7.
Following the utility model will be described in further detail in conjunction with the embodiments:
Figure shown in the double dot dash line is the profile of U shaped steel overlap joint section among Fig. 1, Fig. 4 and Fig. 7.A main card cable 1 and a pair card cable 2 have the card cable body 3 that is connected as a single entity among Fig. 1～Fig. 6.The main card cable also has main briquetting 4, screw-threaded coupling part 5.Pay the card cable and also have the briquetting 6 of paying, screw-threaded coupling part 7.The briquetting 6 of paying that to pay card cable 2 during installation is pressed on the shaped steel and makes its top that leans against shaped steel overlap joint section, and the nut on the threaded together locking member 7 is paid a card cable and promptly clamped.Main briquetting 4 is pressed on the overlap joint section of two shaped steel, it is tight that the nut on the threaded together locking member 5 is about to the main card cable clip.
A main card cable 1 and a pair card cable 2 have the snap ring 8 that is connected as a single entity in Fig. 7～9, main aperture 9 is arranged on the snap ring 8 and pay a hole 10.A main card cable and a pair card cable also have main wedge 11 respectively and pay a wedge 12.To pay wedge 12 during installation and insert in pair hole 10, and make and pay the top that wedge 12 leans against shaped steel overlap joint section, and be pressed on the shaped steel, urgent pair of wedge 12 is about to a pair card cable 2 and clamps.To be pressed on the two shaped steel overlap joint section in the main wedge 11 insertion main apertures 9, urgent main wedge 11 is about to main card cable 1 and clamps.
The utility model compared with prior art has the following advantages:
1, prevents that the first rear card cable that slides of U-shaped steel bracket from producing loosening.
2, improved the resistance to sliding of U-shaped steel bracket, it is about 80% that laboratory test shows that the more former card cable of resistance to sliding that increase to pay card cable after-poppet improves, and this has just guaranteed giving full play to of heavy U-shaped steel and high strength steel supporting effect.
Claims (3)
1, U shaped steel excavation support card cable, form by compressing member and locking member, it is characterized in that comprising be installed in that top that U shaped steel overlap joint section clamps the main card cable [1] of two shaped steel and be installed in the overlap joint section only clamps a shaped steel pay card cable [2], main card cable and pair block a cable and be connected to each other and be in the same place.
2, card cable as claimed in claim 1, it is characterized in that main card cable ［ 1 ］ and pay card cable ［ 2 ］ that the card cable body ［ 3 ］ that is connected as a single entity is arranged, the main card cable has the main briquetting ［ 4 ］ that is pressed on two shaped steel and clamps main briquetting ［ 4 ］ and the screw-threaded coupling part ［ 5 ］ of card cable body ［ 3 ］, and paying the card cable has and be pressed on the shaped steel and lean against paying briquetting ［ 6 ］ and clamping the screw-threaded coupling part ［ 7 ］ of paying briquetting ［ 6 ］ and blocking cable body ［ 3 ］ of shaped steel overlap joint section top.
3, card cable as claimed in claim 1, it is characterized in that main card cable ［ 1 ］ and pay card cable ［ 2 ］ that the snap ring ［ 8 ］ that is connected as a single entity is arranged, main aperture ［ 9 ］ is arranged on the snap ring ［ 8 ］ and pay hole ［ 10 ］, main card cable ［ 1 ］ is wedged in the main aperture ［ 9 ］ by main wedge ［ 11 ］ and is pressed on two shaped steel, pays and blocks cable ［ 2 ］ by being pressed on the shaped steel in pair wedge ［ 12 ］ the wedging pair hole ［ 10 ］ that leans against overlap joint section top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90221616 CN2080559U (en) | 1990-10-09 | 1990-10-09 | Clamp for u-steel prop of pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90221616 CN2080559U (en) | 1990-10-09 | 1990-10-09 | Clamp for u-steel prop of pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2080559U true CN2080559U (en) | 1991-07-10 |
Family
ID=4899722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90221616 Withdrawn CN2080559U (en) | 1990-10-09 | 1990-10-09 | Clamp for u-steel prop of pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2080559U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1038859C (en) * | 1994-02-04 | 1998-06-24 | 江阴市空调除尘设备厂 | Honeycomb duster |
| CN103939116A (en) * | 2014-04-16 | 2014-07-23 | 湖南科技大学 | All-dimensional high-strength compressible U-type steel clamp cable |
-
1990
- 1990-10-09 CN CN 90221616 patent/CN2080559U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1038859C (en) * | 1994-02-04 | 1998-06-24 | 江阴市空调除尘设备厂 | Honeycomb duster |
| CN103939116A (en) * | 2014-04-16 | 2014-07-23 | 湖南科技大学 | All-dimensional high-strength compressible U-type steel clamp cable |
| CN103939116B (en) * | 2014-04-16 | 2016-01-13 | 湖南科技大学 | The compressible U-shaped steel card cable of a kind of comprehensive high strength |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |