CN201738938U - Binding type pressure box used for U shaped steel rack in mines - Google Patents
Binding type pressure box used for U shaped steel rack in mines Download PDFInfo
- Publication number
- CN201738938U CN201738938U CN2010205020564U CN201020502056U CN201738938U CN 201738938 U CN201738938 U CN 201738938U CN 2010205020564 U CN2010205020564 U CN 2010205020564U CN 201020502056 U CN201020502056 U CN 201020502056U CN 201738938 U CN201738938 U CN 201738938U
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- China
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- backing plate
- shape steel
- steel bracket
- fixing hole
- barb
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Abstract
The utility model discloses a binding type pressure box used for U shaped steel racks in mines comprising an outboard backing plate and an inboard backing plate connected with each other via a bolt to clamp a hydraulic ballast. One end of the outboard backing plate is provided with a barb and the contact surface between the U shaped steel rack and the outboard backing plate is provided with a magnet with great strengths to facilitate the installation of the pressure box. The two ends of the outboard backing plate are provided with fixed holes wherein leather straps with high elasticity wind through the fixed holes and bind the pressure box onto the U shaped steel rack. Foam is provided between the two backing plates to prevent the entering of broken gangue or injected liquid. The inboard backing plate is provided with a fixed groove to prevent the hydraulic ballast from sliding. The hydraulic ballast oil pipe is prefabricated into a crank shape, which prevents the gauge outfit thereof from being buried by erupted liquid. The gauge outfit is further provided with a protection covering plate and a damping rubber padding sheet. Pre-installed on a U shaped steel rack, the pressure box of the utility model can effectively increase the contact and fitting size between the hydraulic ballast and the rocks around the hydraulic ballast, thereby, obviously improving the pressure state of the hydraulic ballast and the reliability of monitored data without being influenced by erupted liquid and realizing long-term sustainable monitoring.
Description
Technical field
The utility model relates to the field of engineering technology of breaking surrounding rock U shaped steel supporting, more specifically relate to the stressed device for monitoring of a kind of colliery U shape steel bracket, be applicable to the information-aided construction of coal mine roadway U shaped steel supporting, can be accurate, convenient, reflect that the roadway surrounding rock surface comes the stress of pressure situation and U shape steel bracket intuitively.
Background technology
The supporting of U shaped steel frame is the supporting method that extensively adopts in the present domestic coal mine roadway driving.The mining bracket pressure cell can be used for monitoring the roadway surrounding rock surface and comes pressure situation and U shape steel bracket force-bearing situation, can judge the construction opportunity of subsequent handlings such as spray anchor notes according to monitoring information, and can carry out early warning to accident potential such as roof fall, wall cavings.The mining bracket pressure cell mostly is torus staight shank type at present, need cooperate support to lay operation during on-the-spot the installation and carry out, operation is difficulty very, and has the shortcoming of the loose contact of flat jack pressurized, reading inconvenience, and be subject to whitewashing influence and make gauge outfit be starched layer to bury or damage, cause application life shorter.
Summary of the invention
For overcoming above-mentioned shortcoming, the purpose of this utility model is to be to provide a kind of colliery U shape steel bracket cluster pressure cell, and this apparatus structure is simple, easy to use, can be rack-mount in advance, and improve the force environment that is subjected to of flat jack greatly, and starched layer when avoiding the gauge outfit whitewashing and bury.
To achieve the above object, the utility model adopts following measure:
A kind of colliery U shape steel bracket cluster pressure cell, it is made up of outside backing plate, strong magnets, barb, filling foam, inboard backing plate, bolt, flat jack, crank oil pipe, gauge outfit, cover sheet, yielding rubber pad, fixing hole, bolt hole, guide groove, fixed groove, high strong elastic leather rope.The physical dimension of each assembly is determined according to coal mine roadway support model (25U, 29U and 36U etc.) commonly used.It is characterized in that: on the parallel flanges of outside backing plate across the outer openend of U shape steel bracket, flat jack is played a supporting role.Two edges of an end of outside backing plate are provided with barb, are used for hook U shaped steel.Barb can be hooked on pressure cell on the outer opening end boss of U shape steel bracket.Side at the barb of outside backing plate has pre-groove, pre-groove is positioned at the contact surface place of U shape steel bracket and outside backing plate and strong magnets is installed, pre-groove is arranged and strong magnets is installed along outside backing plate center line at the strong magnets other end, strong magnets is adsorbed on outside backing plate on the U shape steel bracket, play temporary fixed effect, and increase frictional resistance.Establish fixing hole in the middle of the barb on the backing plate of the outside, other end edge on the backing plate of the outside is provided with fixing hole, and high strong elastic leather rope twines and passes fixing hole, and pressure cell is bundled on the U shape steel bracket, on the backing plate of the outside, fixing hole is arranged, first guide groove is set in the middle of fixing hole.Can play fixation to the crank oil pipe, and prevent its kinking.
The main effect of inboard backing plate is to improve country rock surface and flat jack applying situation (especially loose crushing country rock), thereby improves the force environment that is subjected to of flat jack.Positive center is provided with a circular fixed groove on the inboard backing plate, in order to the fixed hydraulic pillow, prevents its slippage.Flat jack is clamped by outside backing plate and inboard backing plate for the core of monitoring bearing pressure.Two backing plates are fixed around flat jack by four bolts.Between outside backing plate and the inboard backing plate filling foam is set, it is stressed to influence flat jack in order to prevent broken spoil and grouting serous fluid access to plant.On the filling foam guide groove is set, passes through for the crank oil pipe.
The crank oil pipe can be passed to gauge outfit with the pressure of flat jack, and being prefabricated into crank-like can draw gauge outfit to the spray-up outside, avoids whitewashing to bury.With high strong elastic leather rope the flat jack crank is bundled on the U shaped steel, the yielding rubber pad is adjacent to U shape steel bracket bottom land, plays the bumper and absorbing shock effect, avoids gauge outfit impaired in the support installation process.Cover sheet is positioned at the gauge outfit outside, and gauge outfit is shielded.After the pre-installation, set up the U shape steel bracket.During whitewashing, cover sheet is closed, remove the concrete that covers on it after the whitewashing at once and get final product.
The beneficial effects of the utility model are; can realize convenient Fast Installation; and can effectively protect gauge outfit; can increase the effective fitting area between pillow cake and country rock, the U shaped steel; significantly improve the flat jack stress; thereby improve the confidence level of monitored data, and can avoid the whitewashing influence, realize continuing to monitor for a long time.
Description of drawings
Fig. 1 is the whole front view of a kind of colliery U shape steel bracket cluster pressure cell.
Fig. 2 is a kind of high strong elastic leather rope.
Fig. 3 is a kind of outside backing plate vertical view.
Fig. 4 is a kind of inboard backing plate vertical view.
Fig. 5 is a kind of filling foam vertical view.
1. outside backing plates among the figure; 2a. strong magnets; 2b. strong magnets; 3a. barb; 3b. barb; 4. filling foam; 5. inboard backing plate; 6a. bolt; 6b. bolt; 7. flat jack; 8. crank oil pipe; 9. gauge outfit; 10. cover sheet; 11. yielding rubber pad; 12.U shape steel bracket; 13a. fixing hole; 13b. fixing hole; 13c. fixing hole; 14a. bolt hole; 14b. bolt hole; 14c. bolt hole; 14d. bolt hole; 15a. guide groove; 15b. guide groove; 16a. bolt hole; 16b. bolt hole; 16c. bolt hole; 16d. bolt hole; 17. fixed groove; 18. high strong elastic leather rope.
The specific embodiment
Below in conjunction with accompanying drawing the utility model structure is further described.The example steel plate adopts the Q235 steel.
A kind of colliery U shape steel bracket cluster pressure cell, it is by outside backing plate 1; the first strong magnets 2a; the second strong magnets 2b; the first barb 3a; the second barb 3b; filling foam 4; inboard backing plate 5; the first bolt 6a; the second bolt 6b; flat jack 7; crank oil pipe 8; gauge outfit 9; cover sheet 10; yielding rubber pad 11; the first fixing hole 13a; the second fixing hole 13b; the 3rd fixing hole 13c; the first bolt hole 14a; the second bolt hole 14b; the 3rd bolt hole 14c; the 4th bolt hole 14d; the first guide groove 15a; the second guide groove 15b; the first bolt hole 16a; the second bolt hole 16b; the 3rd bolt hole 16c; the 4th bolt hole 16d; fixed groove 17; high strong elastic leather rope 18 is formed.Its annexation is: on the parallel flanges of outside backing plate 1 across U shape steel bracket 12 outer openends (as shown in Figure 1), flat jack is played a supporting role.Two edges of one end (left end among Fig. 1) of outside backing plate 1 are provided with the first barb 3a, the second barb 3b, are used for hook U shaped steel flange, are convenient to instrument and fix.Near the first barb 3a, one side pre-groove is arranged at outside backing plate 1, pre-groove is positioned at the contact surface place of U shape steel bracket 12 and outside backing plate 1 and the first strong magnets 2a is installed, and pre-groove is arranged and the second strong magnets 2b is installed along outside backing plate 1 center line at the first strong magnets 2a other end.The first strong magnets 2a and the second strong magnets 2b can be adsorbed on outside backing plate 1 on the U shape steel bracket temporarily, effectively play temporary fixed effect, and increase frictional resistance, are convenient to subsequent installation.The first barb 3a and the second barb 3b interposition install the first fixing hole 13a on outside backing plate 1, other end edge on outside backing plate 1 is provided with the second fixing hole 13b and the 3rd fixing hole 13c, the first fixing hole 13a, the second fixing hole 13b, the 3rd fixing hole 13c are passed in high strong elastic leather rope 18 windings, pressure cell is bundled on the U shape steel bracket 12.The second fixing hole 13b and the 3rd fixing hole 13c are arranged on outside backing plate 1, in the middle of the second fixing hole 13b and the 3rd fixing hole 13c, the first guide groove 15a is set, can play fixation to crank oil pipe 8, and prevent its kinking.
The main effect of inboard backing plate 5 is applying situations (especially loose crushing country rock) of improving country rock surface and flat jack 7, thereby improves the force environment that is subjected to of flat jack 7.Positive center is provided with a circular fixed groove 17 on the inboard backing plate 5, and dark 3～5mm, diameter are than the slightly larger in diameter of flat jack 7, and fixed hydraulic pillow 7 prevents its slippage in fixed groove 17.Flat jack 7 is clamped by outside backing plate 1 and inboard backing plate 5 for the core of monitoring bearing pressure.Outside backing plate 1 and inboard backing plate 5 are fixing around flat jack 7 by the first bolt hole 16a, the second bolt hole 16b, the 3rd bolt hole 16c, the 4th bolt hole 16d (four bolts).Between outside backing plate 1 and the inboard backing plate 5 filling foam 4 is set, it is stressed to influence flat jack 7 in order to prevent broken spoil and grouting serous fluid access to plant.The second guide groove 15b is set on the filling foam 4, passes through for crank oil pipe 8.
The main effect of inboard backing plate 5 is to improve country rock surface and flat jack applying situation, but increased the actual bearer area simultaneously, thereby the data that need will directly read multiply by a pressure reduction coefficient λ (promptly characterizing the parameter of flat jack effective bearing area and actual bearer area ratio) and just can obtain actual pressure value.
λ is pressure reduction coefficient (dimensionless).
S
ZBe flat jack piston area, S
Z=π (D/2)
2, D is a piston diameter (unit: mm).
S
ABe outside rectangular outside backing plate area, S
A=ab, a, b are respectively the length and the wide (unit: mm) of outside backing plate.
Claims (5)
1. colliery U shape steel bracket cluster pressure cell, it comprises outside backing plate (1), first strong magnets (2a), first barb (3a), inboard backing plate (5), first guide groove (15a), high strong elastic leather rope (18), it is characterized in that: on the parallel flanges of outside backing plate (1) across the outer openend of U shape steel bracket (12), two edges of an end of outside backing plate (1) are provided with first barb (3a), second barb (3b), and first barb (3a) and second barb (3b) can be hooked on pressure cell on the outer opening end boss of U shape steel bracket (12).Side at first barb (3a) of outside backing plate (1) has pre-groove, pre-groove is positioned at the contact surface place of U shape steel bracket (12) and outside backing plate (1) and first strong magnets (2a) is installed, pre-groove is arranged and second strong magnets (2b) is installed along outside backing plate (1) center line at first strong magnets (2a) other end, first strong magnets (2a) and second strong magnets (2b) are adsorbed on outside backing plate (1) on the U shape steel bracket (12), establish first fixing hole (13a) in the middle of first barb (3a) on outside backing plate (1) and second barb (3b), other end edge on outside backing plate (1) is provided with second fixing hole (13b) and the 3rd fixing hole (13c), high strong elastic leather rope (18) twines and passes first fixing hole (13a), second fixing hole (13b), the 3rd fixing hole (13c), pressure cell is bundled on the U shape steel bracket (12), second fixing hole (13b) and the 3rd fixing hole (13c) are arranged on outside backing plate (1), first guide groove (15a) is set in the middle of second fixing hole (13b) and the 3rd fixing hole (13c).
2. a kind of colliery according to claim 1 U shape steel bracket cluster pressure cell is characterized in that: a circular fixed groove (17) is set, dark 3-5mm, fixed hydraulic pillow (7) in fixed groove (17) on the described inboard backing plate (5).
3. a kind of colliery according to claim 1 U shape steel bracket cluster pressure cell is characterized in that: described outside backing plate (1) and inboard backing plate (5) are fixed around flat jack (7) by first bolt hole (16a), second bolt hole (16b), the 3rd bolt hole (16c), the 4th bolt hole (16d).
4. a kind of colliery according to claim 1 U shape steel bracket cluster pressure cell is characterized in that: between described outside backing plate (1) and the inboard backing plate (5) filling foam (4) is set, second guide groove (15b) is set on the filling foam (4).
5. a kind of colliery according to claim 1 U shape steel bracket cluster pressure cell, it is characterized in that: described high strong elastic leather rope (18) is bundled in flat jack crank (8) on the U shape steel bracket (12), and yielding rubber pad (11) is close to U shape steel bracket (12) bottom land.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205020564U CN201738938U (en) | 2010-08-20 | 2010-08-20 | Binding type pressure box used for U shaped steel rack in mines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205020564U CN201738938U (en) | 2010-08-20 | 2010-08-20 | Binding type pressure box used for U shaped steel rack in mines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201738938U true CN201738938U (en) | 2011-02-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205020564U Expired - Fee Related CN201738938U (en) | 2010-08-20 | 2010-08-20 | Binding type pressure box used for U shaped steel rack in mines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201738938U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339124A (en) * | 2017-08-23 | 2017-11-10 | 山东科技大学 | Coal mine U-shaped steel support force monitoring warning device |
| CN108930540A (en) * | 2017-05-27 | 2018-12-04 | 中冶长天国际工程有限责任公司 | Just prop up-two lining contact pressure measuring devices and its method for embedding in tunnel |
-
2010
- 2010-08-20 CN CN2010205020564U patent/CN201738938U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930540A (en) * | 2017-05-27 | 2018-12-04 | 中冶长天国际工程有限责任公司 | Just prop up-two lining contact pressure measuring devices and its method for embedding in tunnel |
| CN108930540B (en) * | 2017-05-27 | 2024-02-13 | 中冶长天国际工程有限责任公司 | Tunnel primary support-secondary lining contact pressure measuring device and embedding method thereof |
| CN107339124A (en) * | 2017-08-23 | 2017-11-10 | 山东科技大学 | Coal mine U-shaped steel support force monitoring warning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20150820 |
|
| EXPY | Termination of patent right or utility model |