CN104929663B - Support mechanism capable of applying prestress, reducing pressure and unloading - Google Patents
Support mechanism capable of applying prestress, reducing pressure and unloading Download PDFInfo
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- CN104929663B CN104929663B CN201510306791.5A CN201510306791A CN104929663B CN 104929663 B CN104929663 B CN 104929663B CN 201510306791 A CN201510306791 A CN 201510306791A CN 104929663 B CN104929663 B CN 104929663B
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Abstract
Disclosed is a support mechanism capable of applying prestress, reducing pressure and unloading. The prestress is applied by the aid of the action of an energy gathering spring on a support top plate, the support top plate applies acting force to a wedge supporting block, so that the wedge supporting block slides outwards, the pressure is reduced, and unloading is achieved. The energy gathering spring is positioned between the support top plate and a support bottom plate, pre-tightening rods are mounted on the periphery of the energy gathering spring, pre-tightening nuts are arranged on the upper portions of the pre-tightening rods, rigid supporting blocks are arranged at the lower ends of the pre-tightening rods, the wedge supporting block is positioned on the support bottom plate, and a wedge inclined surface supports the support top plate. The support mechanism is simple and convenient to operate.
Description
Technical field
The present invention relates to a kind of holder mechanism, especially a kind of applied prestressing force suitable for colliery individual prop and subtract
The holder mechanism of pressure unloading.
Background technology
Component, in advance plus prestressing force, can improve component load-bearing ability, and Reducing distortion before load effect.Prestressing force
The devices such as individual prop, prestressed anchor are widely used in engineering field, and decompression unloading is referred to when pressure exceedes tolerance limit
When pressure is reduced rapidly, such as in the hydraulic prop of colliery commonly use be to set safety relief valve in pumping plant import and export.
It is generally low currently used for the individual prop prestressing force of coal mine support, for metal friction pillar, also there is decompression off-load
Difficult the problems such as.
The content of the invention
Technical problem：It is an object of the invention to provide a kind of applied prestressing force that can be used for individual prop base and decompression
The holder mechanism of unloading.
Technical scheme：The applied prestressing force of the present invention and the holder mechanism of decompression unloading, including pretension bar, bearing top
Multiple cumulative bullets are evenly equipped between plate, base-plate, cumulative spring and rigidity block, described bearing top board and base-plate
The periphery of spring, bearing top board and base-plate is provided with multiple pretension bars being connected as a single entity, and the bottom Jing of pretension bar is rigidly propped up
Block is fixed on base-plate, and the top of pretension bar is provided with the pretension nut to bearing top board positioning, described bearing top board and
The side of base-plate is evenly equipped with the sphenoid block of pressure-bearing or release.
The free height of described cumulative spring is h1, the height after cumulative spring is compressed is h2, the rigidity of cumulative spring
For k, the relational expression of the pretension support force N parameters that cumulative spring applies is：N=k (h1-h2), being slid in and out by sphenoid block makes
Minimum constructive height after cumulative spring-compressed is hmin, rigidity block rational height hzThe relational expression of parameter is：hz=hmin。
Described bearing top board and base-plate is circular or square.
Beneficial effect：Utilization of the present invention can apply the holder mechanism of prestressing force and decompression unloading, by cumulative spring to propping up
The effect of seat top board applies prestressing force, and bearing top board produces active force and makes the sphenoid outside sliding of block to sphenoid block,
So as to reach the purpose of decompression unloading.Pressure-bearing support effectively can be carried out to support unit or release is shunk, its simple structure, operation
Convenient, using effect is good, in the art with wide applicability.
Description of the drawings：
Fig. 1 is the structural representation of the present invention.
In figure：1- pretension bars, 2- pretension nuts, 3- bearing top boards, 4- base-plates, 5- cumulative springs, 6- rigidly props up block,
7- sphenoids block, 8- sphenoids inclined-plane.
Specific embodiment
One embodiment of the present of invention is further described below in conjunction with the accompanying drawings：
The applied prestressing force of the present invention and the holder mechanism of decompression unloading, mainly by pretension bar 1, bearing top board 3, bearing
Multiple cumulative springs 5 are evenly equipped between base plate 4, cumulative spring 5 and rigidity block 6, described bearing top board 3 and base-plate 4,
The periphery of bearing top board 3 and base-plate 4 is provided with multiple pretension bars 1 being connected as a single entity, and the bottom Jing of pretension bar 1 is rigidly propped up
Block 6 is fixed on base-plate 4, and the top of pretension bar 1 is provided with the pretension nut 2 to the positioning of bearing top board 3, described bearing top
The side of plate 3 and base-plate 4 is evenly equipped with the sphenoid block 7 of pressure-bearing or release；Described bearing top board 3 and base-plate 4
For circular or square, the bearing top board 3 and base-plate 4 for it is circular when, sphenoid block 7 is arranged in 120 °, the bearing
When top board 3 and base-plate 4 are square, sphenoid block 7 is arranged symmetrically.
The free height of described cumulative spring 5 is h1, the height after cumulative spring 5 is compressed is h2, cumulative spring 5
Rigidity is k, and the relational expression of the pretension support force N parameters that cumulative spring 5 applies is：N=k (h1-h2), it is outside by sphenoid block 7
Minimum constructive height after slip compresses cumulative spring 5 is hmin, the rigidity rational height h of block 6zThe relational expression of parameter is：hz=
hmin。
Operation principle：The present invention mainly has two effects of applying prestressing force and decompression unloading, when needing to apply pretightning force,
The pre-load nut 2 on pretension bar 1 is loosened, originally the cumulative spring 5 in compressive state can produce work upwards to bearing top board 3
Firmly, by adjusting position of the pre-load nut 2 on pretension bar 1, it is possible to achieve the applying of different size pretightning force.When acting on
When down force on bearing top board 3 is sufficiently large, by work of the bearing top board 3 to the sphenoid inclined-plane 8 of sphenoid block 7
With, the sphenoid outside side slip of block 7 is made so as to reach the purpose of decompression, when needing unloading, can be outside by sphenoid block 7
It is mobile, when bearing top board 3 drops to cumulative spring critical slope langth value, bearing top board 3 can be formed effectively by rigidity block 6
Support, damage so as to avoid the amount of contraction of cumulative spring 5 excessive.
Claims (2)
1. it is a kind of to apply the holder mechanism that prestressing force and decompression are unloaded, including pretension bar (1), bearing top board (3), base-plate
(4), cumulative spring (5) and rigidity block (6), it is characterised in that：Between described bearing top board (3) and base-plate (4)
The periphery for being furnished with multiple cumulative springs (5), bearing top board (3) and base-plate (4) is provided with multiple pretensions being connected as a single entity
Bar (1), rigidly a block (6) is fixed on base-plate (4) the bottom Jing of pretension bar (1), and the top of pretension bar (1) is provided with to propping up
The pretension nut (2) of seat top board (3) positioning, described bearing top board (3) and the side of base-plate (4) is evenly equipped with pressure-bearing or unloads
The sphenoid of pressure block (7)；
The free height of described cumulative spring (5) is h1, the height after cumulative spring (5) is compressed is h2, cumulative spring (5)
Rigidity be k, the relational expression of pretension support force N parameters that cumulative spring (5) applies is：N=k (h1-h2), by sphenoid block
(7) sliding in and out makes the minimum constructive height after cumulative spring (5) compression be hmin, rigidity block (6) rational height hzThe relation of parameter
Formula is：hz=hmin。
It is 2. according to claim 1 to apply the holder mechanism that prestressing force and decompression are unloaded, it is characterised in that：Described props up
Seat top board (3) and base-plate (4) are circular or square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510306791.5A CN104929663B (en) | 2015-06-05 | 2015-06-05 | Support mechanism capable of applying prestress, reducing pressure and unloading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510306791.5A CN104929663B (en) | 2015-06-05 | 2015-06-05 | Support mechanism capable of applying prestress, reducing pressure and unloading |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104929663A CN104929663A (en) | 2015-09-23 |
| CN104929663B true CN104929663B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510306791.5A Active CN104929663B (en) | 2015-06-05 | 2015-06-05 | Support mechanism capable of applying prestress, reducing pressure and unloading |
Country Status (1)
| Country | Link |
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| CN (1) | CN104929663B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368724A (en) | 2016-11-03 | 2017-02-01 | 中国矿业大学 | Mechanical constant-resistance single prop pre-tightening device and method |
| CN106285739A (en) * | 2016-11-03 | 2017-01-04 | 江苏中矿立兴能源科技有限公司 | One can reduce pressure unload-type individual prop base mechanism |
| CN106835959B (en) * | 2017-01-11 | 2019-02-19 | 中船第九设计研究院工程有限公司 | A kind of self-balancing sheet-type support |
| CN109183804B (en) * | 2018-08-29 | 2020-08-21 | 中铁十六局集团第一工程有限公司 | Foundation pit excavation mixed support prestress self-adaptive automatic compensation method |
| CN109944615A (en) * | 2019-04-18 | 2019-06-28 | 东北大学 | A kind of underground supporting manually ore pillar and erection method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE875493C (en) * | 1950-08-08 | 1953-05-04 | Eisenwerk Wanheim G M B H | Lock clamping device for evenly setting adjustable steel pit punches |
| DE1028955B (en) * | 1954-07-08 | 1958-04-30 | Wilhelm Reppel | Method and device for tensioning the lock gear on pit punches |
| US4332512A (en) * | 1979-05-22 | 1982-06-01 | Bochumer Eisenhuette Heintzmann Gmbh & Co. | Arrangement for erecting columnar supporting elements for underground excavations |
| CN2726722Y (en) * | 2004-08-27 | 2005-09-21 | 北京市有色金属研究总院 | Lower suspending torsion-swing type high-energy ball mill |
| CN102995164B (en) * | 2012-12-21 | 2015-06-17 | 青岛宏大纺织机械有限责任公司 | Transmission device of reciprocating bale plucker pressing roller |
| CN204141998U (en) * | 2014-02-26 | 2015-02-04 | 新兴铸管新疆有限公司 | The anti-arch camber elastic rail pressing of a kind of chassis |
| CN104197098B (en) * | 2014-07-31 | 2016-02-17 | 中国船舶重工集团公司第七一九研究所 | A kind of supporting pipeline device of adaptability adjustment setting height(from bottom) |
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| CN104929663A (en) | 2015-09-23 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20191220 Address after: Quanshan District China University of Mining and Technology east city of Xuzhou province Jiangsu 221000 dormitory building 29, unit 2, Room 501 Patentee after: Tang Huiying Address before: 221116 Jiangsu city of Xuzhou province science and Technology Park Mine Quanshan technology building, South Building Room 406 Patentee before: Jiangsu CMLX Energy Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20200811 Address after: 210000 building 24, Zhongke innovation Plaza, No. 150, pubin Road, Jiangbei new district, Nanjing, Jiangsu Province 2001 Patentee after: Jiangsu Zhengxing Mining Technology Development Co., Ltd Address before: Quanshan District China University of Mining and Technology east city of Xuzhou province Jiangsu 221000 dormitory building 29, unit 2, Room 501 Patentee before: Tang Huiying |
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| TR01 | Transfer of patent right |