CN2146569Y - Double-connecting-rod type hydraulic prop - Google Patents
Double-connecting-rod type hydraulic prop Download PDFInfo
- Publication number
- CN2146569Y CN2146569Y CN 92239559 CN92239559U CN2146569Y CN 2146569 Y CN2146569 Y CN 2146569Y CN 92239559 CN92239559 CN 92239559 CN 92239559 U CN92239559 U CN 92239559U CN 2146569 Y CN2146569 Y CN 2146569Y
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- CN
- China
- Prior art keywords
- connecting rod
- point
- support frame
- oil cylinder
- double
- 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
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Abstract
The utility model discloses a double-connecting-rod type hydraulic support frame, which is applicable to coal mine comprehensive mechanization mining; in the support frame, the original four-connecting-rod mechanism is replaced by a connecting rod and a control oil cylinder of the connecting rod, which essentially reforms the frame structure of the existing hydraulic support frame. The connecting rod, the oil cylinder and a support frame base form a triangle stable mechanism, which effectively controls the static friction between the top beam of the support frame and the top plate of the coal layer, and eliminates the too large internal force of the support frame members, so that the strength of the members can be reduced accordingly, and steel is saved. The utility model has the advantages of light weight and low cost.
Description
The utility model relates to colliery fully-mechanized mining hydraulic support technical field.
The domestic and international at present hydraulic support that uses, its type generally adopts the stabilizing mechanism of four connecting rods as support, also has a small amount of support to adopt simple lay structure or single wobbling pole mechanism.All these hydraulic supports all exist a common shortcoming, and promptly support each parts mutual restriction in the supporting process makes each component internal force of support excessive.Cause the excessive key of support internal force to be: these supports are under carrying in the compression process, set cap is owing to the characteristics of supporting structure itself determine, by certain orbiting motion, and roof and not according to this orbiting motion, this just makes between set cap and the top board and constantly exists relative movement trend, thereby between has produced very big stiction.This additional load will all be born by the stabilizing mechanism of support, therefore, requires each parts of support that very high intensity must be arranged.Support Design person from available data, does not also have a kind of good method of dealing with problems at the technological approaches of seeking to address this problem both at home and abroad at present.
The purpose of this utility model is: the stabilizing mechanism of a kind of double link with control as support is provided, make support in the support process, both have certain ability of bearing the stiction between top board and the back timber, can reach yield load at support again and unload and depress that set cap and top board are synchronized with the movement when contracting.Thereby reduce the internal force of each member of support.
For reaching this purpose, the technical scheme that solves is as follows: as Fig. 1, it is a kind of band control double-connecting rod type hydraulic support, this support removes the back timber 1 that common support is provided with, column 2,3, caving shield 4 is outside the base 7, also be provided with the connecting rod 5 made by rigid components and the control oil cylinder 6 of connecting rod 5, connecting rod, oil cylinder and base have been formed a triangle stabilizing mechanism.Connecting rod one end and caving shield are in the hinge joint of F point, and the other end and base link at the G point.Control oil cylinder one end and connecting rod are in the hinge joint of H point, and the other end and base link at the I point.
The anchor point at connecting rod two ends and oil cylinder two ends can be any position, and the H point also can overlap with the F point, and it is fixed all to be needed to come by design.
The number of the number of bracket upright post and control oil cylinder is any number, and also being is needed to decide by design.
By connecting rod, behind the triangle stabilizing mechanism that oil cylinder and base are formed, unload and depress when contracting when column reaches yield load, caving shield will rotate around the F point, make the trend of the oriented left movement of back timber, produce certain stiction between set cap and the top board, when this frictional force reaches certain value, the safety valve of oil cylinder is opened, and discharges interaction force excessive between each parts.By adjusting the opening pressure of safety valve of oil cylinder, realize the maximum value of stiction between control back timber and top board, to satisfy the requirement of supporting and support stability under the different geological conditionss.
Band control double-connecting rod type hydraulic support compared with prior art has following tangible advantage and economic effect:
1. because band control double-connecting rod type hydraulic support has fundamentally been eliminated existing support because the caused excessive support internal force of structure itself, therefore can correspondingly reduce requirement of strength to each member of support, save steel, alleviate weight support frame, reduce the support cost.
2. the opening pressure of safety valve of control oil cylinder can be adjusted, and has therefore enlarged the scope of application of support under the matter condition of different regions.Increased the compliance of support.
Below, in conjunction with most preferred embodiment, accompanying drawing is illustrated.Accompanying drawing 1 is band control double-connecting rod type hydraulic support schematic diagram.Each sequence number is among the figure: set cap 1, bracket upright post 2,3, caving shield 4, connecting rod 5, control oil cylinder 6, base 7, top board 8.
The QZFS2800-17/25D type hydraulic support that is is now manufacturing and designing and be about to go into operation promptly is a kind of of this principle, and this support is compared with prior art bearing under the same load situation, and weight can alleviate 30%.
Claims (3)
1, a kind of band control double-connecting rod type hydraulic support, be applicable to the colliery comprehensive mechanical coal mining, be by back timber (1), column (2), (3), caving shield (4), bases (7) etc. are formed, it is characterized in that: adopt rigid components connecting rod (5) and control oil cylinder (6) as stabilizing mechanism, connecting rod (5) links at the F point with caving shield (4), and connecting rod (5) links at the G point with base, control oil cylinder (6) links at the H point with connecting rod (5), and control oil cylinder (6) links at the I point with base.
2, band control double-connecting rod type hydraulic support according to claim 1 is characterized in that: but any position of anchor point F connecting rod (5), G point, H point and I point all are any positions, the H point also can overlap with the F point.
3, the double-connecting rod type hydraulic support of band control according to claim 1 is characterized in that: the number of column number and control oil cylinder (6) is any number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92239559 CN2146569Y (en) | 1992-10-31 | 1992-10-31 | Double-connecting-rod type hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92239559 CN2146569Y (en) | 1992-10-31 | 1992-10-31 | Double-connecting-rod type hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2146569Y true CN2146569Y (en) | 1993-11-17 |
Family
ID=33780250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92239559 Expired - Fee Related CN2146569Y (en) | 1992-10-31 | 1992-10-31 | Double-connecting-rod type hydraulic prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2146569Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102472102A (en) * | 2009-07-10 | 2012-05-23 | 乔伊·姆·特拉华公司 | Longwall mining roof supports |
| CN113339025A (en) * | 2021-06-04 | 2021-09-03 | 煤炭科学研究总院 | Hydraulic system and hydraulic support group |
-
1992
- 1992-10-31 CN CN 92239559 patent/CN2146569Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102472102A (en) * | 2009-07-10 | 2012-05-23 | 乔伊·姆·特拉华公司 | Longwall mining roof supports |
| CN102472102B (en) * | 2009-07-10 | 2015-03-11 | 乔伊·姆·特拉华公司 | Longwall mining roof supports |
| CN104790995A (en) * | 2009-07-10 | 2015-07-22 | 乔伊·姆·特拉华公司 | Longwall mining roof supports |
| US9670777B2 (en) | 2009-07-10 | 2017-06-06 | Joy Mm Delaware, Inc. | Longwall mining roof supports |
| CN113339025A (en) * | 2021-06-04 | 2021-09-03 | 煤炭科学研究总院 | Hydraulic system and hydraulic support group |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |