CN204024683U - The automatically quick bringing device of the high pretightning force not damaged of mine bolt - Google Patents
The automatically quick bringing device of the high pretightning force not damaged of mine bolt Download PDFInfo
- Publication number
- CN204024683U CN204024683U CN201420494193.6U CN201420494193U CN204024683U CN 204024683 U CN204024683 U CN 204024683U CN 201420494193 U CN201420494193 U CN 201420494193U CN 204024683 U CN204024683 U CN 204024683U
- Authority
- CN
- China
- Prior art keywords
- oil
- top cover
- pretightning force
- hollow
- nut
- 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.)
- Expired - Fee Related
Links
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to the automatically quick bringing device of the high pretightning force not damaged of mine bolt, can effectively solve and under anchor pole composite stress state, produce disrumpent feelings and high pretightning force and apply slow-footed problem, the technical scheme solving is, hydraulic jack is by two outer shells, two inner casings and two bases form, two inner cylinder liners are at two outer cylinder interiors, two outer cylinder sheaths are in two bases, there is oil-in in one base cylinder outside, between two bases, link together by oil pipe, middle cover is set with and is sealed in two outer shell tops, there is the oil-out corresponding with oil-in in middle cover cylinder outside, middle cover inside is provided with lockset chamber, the hollow structure of top cover both sides is sleeved on the top of two inner casings, there are top cover oil-in and top cover oil-out in top cover cylinder outside, the hollow structure of top cover both sides is connected with inner casing, the utility model is simple in structure, the effect of bolt support significantly improves, save cost, it is the innovation on the high pretightning force anchor bar suspension device of coal mine roadway.
Description
Technical field
The utility model relates to coal mine support field, particularly the automatically quick bringing device of the high pretightning force not damaged of a kind of mine bolt.
Background technology
The effect of coal mine roadway bolt support is to control dilatation, the discontinuous deformations such as anchorage zone surrounding rock separation layer, slip, crack open, new crackle generation and destroys, make country rock in pressured state, suppress country rock flexural deformation, stretching and shear failure, keep anchorage zone rock integrity, reduce strength decreased.To a great extent, the size that applies pretightning force has determined the effect of bolt support.Under the effect of mine pressure, anchor pole free end is in multiple composite stress states such as drawing, cut, turn round, be curved.And that anchor pole (metallic rod body) tensile strength is far longer than is anti-shearing, reverse, bending intensity; When anchor rod body be subject to shear, reverse, when bending, anchor pole is easier to disrumpent feelings, especially at the afterbody of anchor pole and the intersection of anchoring section and free segment, disrumpent feelings probability occurs the highest.Apply high pretightning force and aligning pallet is installed, can control bending and the shear action of rock mass to anchor rod body; And the pretightning force of anchor pole is by extraneous facility, the torsion of nut to be applied, high pretightning force certainly will apply higher moment of torsion, causes the intersection of anchor pole tailing screw flight section and anchoring section and free segment to be subject to higher torsion; Under the effect of anchor pole tension stress, torsional stress is just converted to the shear stress to the body of rod, high pre-stress anchor pole is occurred disrumpent feelings.In a way, 95% anchor pole is disrumpent feelings is all the intersection that occurs in spiral thread on anchor bolt section and anchoring section and free segment.Therefore, develop the high pretightning force bringing device of a kind of mine bolt, realize anchor rod prestress and apply only tension stress effect of stage, make pretightning force approach or reach anchor pole yield strength and do not damage the body of rod, can reach 120kN(was about 50kN in the past) more than, and to realize automatically applying fast of bolt pretension be the technical problem of needing at present solution badly.
Summary of the invention
For above-mentioned situation, for solving the defect of prior art, the object of the utility model is just to provide automatically fast bringing device of the high pretightning force not damaged of a kind of mine bolt, can effectively solve under anchor pole composite stress state, to produce disrumpent feelings and high pretightning force and apply slow-footed problem.
The technical scheme that the utility model solves is, comprise hydraulic jack, middle cover and top cover, hydraulic jack is by two outer shells, two inner casings and two bases form, two inner cylinder liners are at two outer cylinder interiors, two outer cylinder sheaths are in two bases, there is oil-in in one base cylinder outside, between two bases, link together by oil pipe, middle cover is set with and is sealed in two outer shell tops, there is the oil-out corresponding with oil-in in middle cover cylinder outside, middle cover inside is provided with lockset chamber, lockset has locking plate in chamber, spring and hollow nut, the hollow structure of top cover both sides is sleeved on the top of two inner casings, there are top cover oil-in and top cover oil-out in top cover cylinder outside, the hollow structure of top cover both sides is connected with inner casing, top cover inside middle is the circular cavity of lower large little one-tenth step structure, hollow hydraulic motor and hollow nut are installed in circular cavity.
The utility model is simple in structure, has realized anchor rod prestress and has applied only tension stress effect of stage, makes pretightning force approach or reach anchor pole yield strength and do not damage the body of rod, more than can reaching 120kN; Realized automatically applying fast of bolt pretension, really accomplished the high pretightning force bolt support of anchor rod laneway, the effect of bolt support significantly improves, and has saved cost, is the innovation on the high pretightning force anchor bar suspension device of coal mine roadway.
Brief description of the drawings
Fig. 1 is stereogram of the present utility model.
Fig. 2 is partial sectional view of the present utility model.
Fig. 3 is lateral view of the present utility model.
Fig. 4 is using method schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail.
Provided by Fig. 1-4, the utility model comprises hydraulic jack, middle cover and top cover, hydraulic jack is by two outer shells 1, two inner casings 2 and two bases 16 form, two inner casings 2 are enclosed within two outer shell 1 inside, two outer shells 1 are enclosed within two bases 16, there is oil-in 7 in one base 16 cylinder outsides, between two bases 16, link together by oil pipe 5, middle cover 3 is set with and is sealed in two outer shell 1 tops, there is the oil-out corresponding with oil-in 78 in middle cover 3 cylinder outsides, middle cover 3 inside are provided with lockset chamber 6, in lockset chamber 6, there is locking plate 13, spring 14 and hollow nut 15, the hollow structure of top cover 4 both sides is sleeved on the top of two inner casings 2, there are top cover oil-in 9 and top cover oil-out 10 in top cover 4 cylinder outsides, the hollow structure of top cover 4 both sides is connected with inner casing 2, top cover 4 inside middle are the circular cavity of lower large little one-tenth step structure, hollow hydraulic motor 12 and hollow nut 11 are installed in circular cavity.
In order to ensure result of use, the assembling between two outer shells 1 of described hydraulic jack, two inner casings 2, two bases 16, middle cover 3 all seals by seal; Two inner casings 2 slide at the interior easy on and off of two outer shells 1, hydraulic oil enters in an outer shell by oil-in 7, and enter in another outer shell by oil pipe 5, under the effect of hydraulic oil, promote two inner casings 2 and move up, provide a thrust to the external world, open oil return valve, hydraulic oil flows out from oil-out 8, and two inner casings 2, to the interior indentation of two outer shells 1, make jack backhaul.
Described middle cover 3 is the little and symmetrical flat column structure in two broad in the middle, and inside is provided with oil transportation channel; Hydraulic oil in one outer shell enters oil-out 8 by this passage, and the hydraulic oil of inside, both sides is all discharged by oil-out 8.
Described lockset chamber 6 is positioned at the middle part of middle cover 3, for the cavity of upper cone shape lower cylindrical shape, lower cylindrical shape cavity has internal thread, be fixed together with hollow nut 15 external screw threads, hollow nut 15 tops are provided with spring 14 and locking plate 13 successively, locking plate 13 is evenly equipped with three along lockset chamber 6, and locking plate 13 cross sections are at right angles trapezoidal, and vertical one side has lock tooth; Anchor pole afterbody penetrates locking plate 13, and in the time that external force pulls out anchor pole, locking plate 13 moves up together with anchor pole afterbody, and the cavity of upper cone shape has limited locking plate and moves to surrounding, and then locking plate 13 is at locking anchor pole afterbody.
In the circular cavity of described top cover 4 middle lower portion, be embedded with hollow hydraulic motor 12, hollow hydraulic motor 12 oil-ins and top cover oil-in 9 are tightly connected, hollow hydraulic motor 12 oil-outs and top cover oil-out 10 are tightly connected, described top cover 4 middle upper portion cavitys are the cone of handstand, match with spherical pallet 18; Hydraulic oil is entered in hollow hydraulic motor 12 by top cover oil-in 9, is discharged by top cover oil-out 10, and the pressure differential producing drives hollow hydraulic motor 12 rotors.
The described big up and small down hollow cylindrical of nut 11, nut 11 middle parts embed in hollow hydraulic motors 12, and nut 11 tops are six rib grooves, match, and have the gap of 1 ~ 2mm with anchor nut 19 with anchor nut 19; Nut 11 rotates together with hollow hydraulic motor 12, after jack oil return, two inner casings 2 drive top cover 4 to move to middle cover 3, and the bottom of nut 11 is just pressed in the lockset chamber of middle cover 36, locking plate 13 in lockset chamber 6 is just pushed downwards and moves, and then the anchor pole afterbody of locking is separated with locking plate 13.
The utility model in the specific implementation, carries out according to the following steps:
The first step, bores to coal and rock and beats bolthole 20, puts into resin anchoring agent 22 and stir, and makes anchor pole 21 in bolthole 20 inner end anchorings;
Second step, installs spherical pallet 18, tightens anchor nut 19, and spherical pallet 18 is connected with the cone that top cover 4 middle upper portion are stood upside down, and anchor nut 19 is fixed anchor pole 21, rear the concentrating of some anchor poles 21 is installed and applies high pretightning force;
The 3rd step, oil-in 9, the oil-out 10 of oil-in 7, oil-out 8 and the hollow hydraulic motor 12 of hydraulic jack are connected by high-pressure hose with pneumatic oil pump oil-in and oil-out respectively, and connect the air-supply pipeline of pneumatic oil pump;
The 4th step, harmless high mine bolt pretightning force quick bringing device is pushed to anchor pole 21 afterbodys, and hold out against spherical pallet 18, and start pneumatic oil pump, open the inlet valve of hydraulic jack, the lockset locking anchor pole 21 afterbody bodies of rod of middle cover 3 inside, along with the continuous increase of oil pressure, two inner casings 2 stretch out two outer shells 1 gradually, drive top cover 4 top pressure ball shape pallets 18, anchor pole 21, outwards by stretch-draw, will separate between spherical pallet 18 and anchor nut 19 gradually simultaneously;
The 5th step, open the inlet valve of hollow hydraulic motor 12, make hollow hydraulic motor 12 drive inner hollow nut 11 to rotate, hollow nut 11 drives anchor nut 19 to rotate, and then anchor nut 19 is tightened, thereby realize height pretension under anchor pole 21 tensile states.
The utility model is simple in structure, efficiently solve the damage that high pretightning force produces to anchor pole afterbody with Anchor Agent contact surface place and the disrumpent feelings and high pretightning force that causes applies a slow-footed difficult problem, not only realize high pretightning force (pretightning force approaches anchor pole yield limit), and the speed that applies of high pretightning force improves greatly, the effect of bolt support is significantly improved, having saved cost, is the innovation on the high pretightning force anchor bar suspension device of coal mine roadway, has significant economic and social benefit.
Claims (6)
1. the automatically quick bringing device of the high pretightning force not damaged of mine bolt, comprise hydraulic jack, middle cover and top cover, it is characterized in that, hydraulic jack is by two outer shells (1), two inner casings (2) and two bases (16) form, two inner casings (2) are enclosed within two outer shells (1) inside, two outer shells (1) are enclosed within two bases (16), there is oil-in (7) in one base (16) cylinder outside, between two bases (16), link together by oil pipe (5), middle cover (3) is set with and is sealed in two outer shells (1) top, there is the oil-out (8) corresponding with oil-in (7) in middle cover (3) cylinder outside, middle cover (3) inside is provided with lockset chamber (6), in lockset chamber (6), there is locking plate (13), spring (14) and hollow nut (15), the hollow structure of top cover (4) both sides is sleeved on the top of two inner casings (2), there are top cover oil-in (9) and top cover oil-out (10) in top cover (4) cylinder outside, the hollow structure of top cover (4) both sides is connected with inner casing (2), top cover (4) inside middle is the circular cavity of lower large little one-tenth step structure, hollow hydraulic motor (12) and hollow nut (11) are installed in circular cavity.
2. the automatically quick bringing device of the high pretightning force not damaged of mine bolt according to claim 1, it is characterized in that, the assembling between two outer shells (1) of described hydraulic jack, two inner casings (2), two bases (16), middle cover (3) all seals by seal.
3. the automatically quick bringing device of the high pretightning force not damaged of mine bolt according to claim 1, is characterized in that, described middle cover (3) is the little and symmetrical flat column structure in two broad in the middle, and inside is provided with oil transportation channel.
4. the automatically quick bringing device of the high pretightning force not damaged of mine bolt according to claim 1, it is characterized in that, described lockset chamber (6) is positioned at the middle part of middle cover (3), for the cavity of upper cone shape lower cylindrical shape, lower cylindrical shape cavity has internal thread, be fixed together with hollow nut (15) external screw thread, hollow nut (15) top is provided with spring (14) and locking plate (13) successively, locking plate (13) is evenly equipped with three along lockset chamber (6), locking plate (13) cross section is at right angles trapezoidal, and vertical one side has lock tooth.
5. the automatically quick bringing device of the high pretightning force not damaged of mine bolt according to claim 1, it is characterized in that, in the circular cavity of described top cover (4) middle lower portion, be embedded with hollow hydraulic motor (12), hollow hydraulic motor (12) oil-in and top cover oil-in (9) are tightly connected, hollow hydraulic motor (12) oil-out and top cover oil-out (10) are tightly connected, described top cover (4) middle upper portion cavity is the cone of handstand, matches with spherical pallet (18).
6. the automatically quick bringing device of the high pretightning force not damaged of mine bolt according to claim 1, it is characterized in that, the described big up and small down hollow cylindrical of nut (11), nut (11) middle part embeds in hollow hydraulic motor (12), nut (11) top is six rib grooves, match with anchor nut (19), and have the gap of 1 ~ 2mm with anchor nut (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420494193.6U CN204024683U (en) | 2014-08-29 | 2014-08-29 | The automatically quick bringing device of the high pretightning force not damaged of mine bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420494193.6U CN204024683U (en) | 2014-08-29 | 2014-08-29 | The automatically quick bringing device of the high pretightning force not damaged of mine bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204024683U true CN204024683U (en) | 2014-12-17 |
Family
ID=52064567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420494193.6U Expired - Fee Related CN204024683U (en) | 2014-08-29 | 2014-08-29 | The automatically quick bringing device of the high pretightning force not damaged of mine bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204024683U (en) |
-
2014
- 2014-08-29 CN CN201420494193.6U patent/CN204024683U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104153801B (en) | Mine bolt high pretightening force not damaged is quick applying method automatically | |
| CN107515150B (en) | Comprehensive test experimental device for mechanical properties of marine pipeline | |
| CN105370303B (en) | Tensioning equipment and its operating method for deep tunnel high pre-stress suspension roof support | |
| CN103753191B (en) | Marine shafting flange connects centralising device and centering method fast | |
| CN105484699A (en) | Drilling and milling-free bridge plug for fracturing | |
| CN108999625A (en) | Anchor pole stretching construction device and construction method | |
| CN204140097U (en) | A kind of reusable Stope roof mechanical prop | |
| CN111828067A (en) | Expansion anchoring bolt for controlling roadway surrounding rock and using method thereof | |
| CN107421812A (en) | A kind of rock is turned round and cuts drawing comprehensive experimental device | |
| CN107339090A (en) | Liquid nitrogen fracturing drilling coal experimental provision | |
| CN207087779U (en) | Giant caterpillar bull-dozer crawler belt buffer spring erecting device | |
| CN106839908B (en) | Liquid carbon dioxide phase transformation fracturing device deep hole pusher | |
| CN204024683U (en) | The automatically quick bringing device of the high pretightning force not damaged of mine bolt | |
| CN105241750A (en) | Pressing head system for indoor triaxial hydrofracture experiment | |
| CN203227995U (en) | Double-stage hydraulic stretcher | |
| CN205400775U (en) | Prestressing force slip casting stock | |
| CN104607525B (en) | A kind of liquid inner high voltage of surperficial cannelure root of pipe feeding plays cracking method | |
| CN205103092U (en) | A pressure head system for indoor triaxial hydraulic fracturing is experimental | |
| CN109916248A (en) | Flying stopper for carbon dioxide cracking device | |
| CN202789460U (en) | Oil pump preventing gas | |
| CN203658163U (en) | Confining pressure loading device for rock strength test in lab | |
| CN203583472U (en) | Automatic anchor cable lowering equipment | |
| CN105909286A (en) | Blot-inject support method based on deterioration inhibition principle | |
| CN204941402U (en) | Grappling water booster system | |
| CN110567811A (en) | Confining pressure loading device for anchor cable drawing experiment concrete body |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20170829 |