CN203362205U - Variation movable pulley mechanism capable of using small stroke for realizing long travel distance - Google Patents
Variation movable pulley mechanism capable of using small stroke for realizing long travel distance Download PDFInfo
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- CN203362205U CN203362205U CN 201320381043 CN201320381043U CN203362205U CN 203362205 U CN203362205 U CN 203362205U CN 201320381043 CN201320381043 CN 201320381043 CN 201320381043 U CN201320381043 U CN 201320381043U CN 203362205 U CN203362205 U CN 203362205U
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- movable pulley
- oil cylinder
- pulley
- fixed pulley
- variation
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Abstract
The utility model provides a variation movable pulley mechanism capable of using a small stroke for realizing a long travel distance, and belongs to the technical field of a hydraulic positioning machine. The variation movable pulley mechanism uses small stroke changes of an oil cylinder for driving a hydraulic support to generate the long travel distance. According to the technical scheme, a connecting shaft is perpendicularly installed at the front end of a piston rod of the oil cylinder; a first movable pulley and a second movable pulley are installed at the two ends of the connecting shaft respectively; a rodless cavity of the oil cylinder is fixedly formed in a rack of the positioning machine; a third fixed pulley is arranged at the tail end of the rodless cavity of the oil cylinder; one end of a pulling rope is fixed, and the other end of the pulling rope extends out after penetrating through the first movable pulley, the third fixed pulley and the second movable pulley in sequence. According to the variation movable pulley mechanism capable of using the small stroke for realizing the long travel distance, the oil cylinder is used for replacing a traditional motor, the power of the oil cylinder is adjustable, the operation of the whole machine is not affected, manufacturing cost and maintenance cost are reduced, and therefore the variation movable pulley mechanism can be widely applied to the hydraulic positioning machines.
Description
Technical field
The utility model is a kind of realizes that little stroke moves greatly the variation movable pulley mechanism of distance, belongs to hydraulic pressure machine technology in place field.
Background technology
Machine in place is widely used in colliery digging industry, be provided with the draw-gear of hydraulic support on machine in place, traditional hydraulic support draw-gear is that the motor driving elevator rotates, by rotatablely moving of elevator, control the extension elongation of pull rope, reach and control the purpose that the hydraulic support stroke changes; And the power under mine adopts water to turn oily power, be that power is to be provided by hydraulic pressure, then hydraulic pressure is converted to the power that oil pressure provides machine operation, power just has limitation minute mixing like this, with motor during as the power of draw-gear, motor is generally permanent power, like this when the workload of miscellaneous part is larger, if the power of motor is excessive, will affect the stable running of entire machine.
The utility model content
The utility model overcomes the deficiency that prior art exists, and technical problem to be solved produces for providing a kind of little stroke by oil cylinder to change to drive hydraulic support the variation movable pulley mechanism that moves greatly distance.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind ofly realize that little stroke moves greatly the variation movable pulley mechanism of distance, comprise oil cylinder, pull rope, the first movable pulley, the second movable pulley, connecting axle, the 3rd fixed pulley and machine frame in place, connecting axle is vertically mounted on the front end of cylinder piston rod, the two ends of connecting axle are separately installed with the first movable pulley and the second movable pulley, the rodless cavity of oil cylinder is fixedly mounted on machine frame in place, the end of the rodless cavity of oil cylinder is provided with the 3rd fixed pulley, one end of described pull rope is fixed, the other end is successively through the first movable pulley, after the 3rd fixed pulley and the second movable pulley, stretch out.
Be provided with the first fixed pulley and the second fixed pulley on described machine frame in place, the first fixed pulley is arranged on the place ahead of oil cylinder extension bar, the second fixed pulley is arranged between the second movable pulley and the 3rd fixed pulley, described pull rope is from the second movable pulley stretches out, successively through the second fixed pulley and the first fixed pulley, with hydraulic support, be connected again.
Described a kind of variation movable pulley mechanism of realizing that little stroke moves greatly distance all adopts hydraulic control.
The utility model compared with prior art has following beneficial effect.
1, the utility model adopts oil cylinder to replace traditional motor, has saved the cost of manufacturing and safeguarding.
2, oil cylinder power of the present utility model can be regulated, and can, due to the excessive running that affects entire machine of the power of oil cylinder, not guarantee the normal operation of machine.
3, the utility model all adopts hydraulic control, has avoided traditional circuit and has controlled, and has increased the safety that machine operates under ore deposit.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in more detail.
To be that the utility model is a kind of realize that little stroke moves greatly the structural representation of the variation movable pulley mechanism of distance to Fig. 1.
In figure: 1 is oil cylinder, and 2 is pull rope, and 3 is the first movable pulley, and 4 is connecting axle, and 5 is the second movable pulley, and 6 is the first fixed pulley, and 7 is hydraulic support, and 8 is the second fixed pulley, and 9 is the 3rd fixed pulley, and 10 is machine frame in place.
The specific embodiment
As shown in Figure 1, the utility model is a kind of realizes that little stroke moves greatly the variation movable pulley mechanism of distance, comprise oil cylinder 1, pull rope 2, the first movable pulley 3, the second movable pulley 5, connecting axle 4, the 3rd fixed pulley 9 and machine frame 10 in place, connecting axle 4 is vertically mounted on the front end of oil cylinder 1 piston rod, the two ends of connecting axle 4 are separately installed with the first movable pulley 3 and the second movable pulley 5, the rodless cavity of oil cylinder 1 is fixedly mounted on machine frame 10 in place, the end of the rodless cavity of oil cylinder 1 is provided with the 3rd fixed pulley 9, one end of described pull rope 2 is fixed, the other end is successively through the first movable pulley 3, after the 3rd fixed pulley 9 and the second movable pulley 5, stretch out.
Be provided with the first fixed pulley 6 and the second fixed pulley 8 on described machine frame 10 in place, the first fixed pulley 6 is arranged on the place ahead of oil cylinder 1 extension bar, the second fixed pulley 8 is arranged between the second movable pulley 5 and the 3rd fixed pulley 9, described pull rope 2 is from the second movable pulley 5 stretches out, successively through the second fixed pulley 8 and the first fixed pulley 6, with hydraulic support 7, be connected again.
Described a kind of variation movable pulley mechanism of realizing that little stroke moves greatly distance all adopts hydraulic control.
The course of work of the present utility model is: the oil cylinder 1 bar front end of oil cylinder 1 is provided with the first movable pulley 3 and the second movable pulley 5 by connecting axle 4, one end of pull rope 2 is fixed, an other end is connected with hydraulic support 7, when the certain stroke of the oil cylinder 1 bar stretch/shrink of oil cylinder 1, effect due to two movable pulley, the stroke that the corresponding movement of an end meeting that pull rope 2 is connected with hydraulic support 7 is four times, and be provided with the first fixed pulley 6 and the second fixed pulley 8 in the outside of oil cylinder 1, because can making the direction of traction, pulley changes, the moving direction that two fixed pulleys just can guarantee hydraulic support 7 is consistent with the moving direction of oil cylinder 1, and first fixed pulley 6 be arranged on the place ahead of oil cylinder 1 extension bar, increased the distance between the hydraulic support 7 be connected with pull rope 2, make moving apart from interval of hydraulic support 7 be guaranteed, like this in the situation that oil cylinder 1 produces little stroke, and hydraulic support 7 just can complete the large distance of moving.
Claims (3)
1. realize that little stroke moves greatly the variation movable pulley mechanism of distance for one kind, it is characterized in that: comprise oil cylinder (1), pull rope (2), the first movable pulley (3), the second movable pulley (5), connecting axle (4), the 3rd fixed pulley (9) and machine frame in place (10), connecting axle (4) is vertically mounted on the front end of oil cylinder (1) piston rod, the two ends of connecting axle (4) are separately installed with the first movable pulley (3) and the second movable pulley (5), the rodless cavity of oil cylinder (1) is fixedly mounted on machine frame in place (10), the end of the rodless cavity of oil cylinder (1) is provided with the 3rd fixed pulley (9), one end of described pull rope (2) is fixed, the other end is successively through the first movable pulley (3), after the 3rd fixed pulley (9) and the second movable pulley (5), stretch out.
2. according to claim 1ly a kind ofly realize that little stroke moves greatly the variation movable pulley mechanism of distance, it is characterized in that: be provided with the first fixed pulley (6) and the second fixed pulley (8) on described machine frame in place (10), the first fixed pulley (6) is arranged on the place ahead of oil cylinder (1) extension bar, the second fixed pulley (8) is arranged between the second movable pulley (5) and the 3rd fixed pulley (9), described pull rope (2) is from the second movable pulley (5) stretches out, successively through the second fixed pulley (8) and the first fixed pulley (6), with hydraulic support (7), be connected again.
3. according to claim 1 and 2ly a kind ofly realize that little stroke moves greatly the variation movable pulley mechanism of distance, is characterized in that: described a kind of variation movable pulley mechanism of realizing that little stroke moves greatly distance all adopts hydraulic control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320381043 CN203362205U (en) | 2013-06-29 | 2013-06-29 | Variation movable pulley mechanism capable of using small stroke for realizing long travel distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320381043 CN203362205U (en) | 2013-06-29 | 2013-06-29 | Variation movable pulley mechanism capable of using small stroke for realizing long travel distance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203362205U true CN203362205U (en) | 2013-12-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320381043 Expired - Fee Related CN203362205U (en) | 2013-06-29 | 2013-06-29 | Variation movable pulley mechanism capable of using small stroke for realizing long travel distance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203362205U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017113497A1 (en) * | 2015-12-30 | 2017-07-06 | 中国矿业大学 | Mechanism and method for amplifying reciprocating speed and displacement |
| CN109404362A (en) * | 2018-11-06 | 2019-03-01 | 汉尼康自动化科技（苏州）有限公司 | A kind of device for making to there is bar cylinder to reach no same installation space of bar cylinder |
-
2013
- 2013-06-29 CN CN 201320381043 patent/CN203362205U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017113497A1 (en) * | 2015-12-30 | 2017-07-06 | 中国矿业大学 | Mechanism and method for amplifying reciprocating speed and displacement |
| AU2016380001B2 (en) * | 2015-12-30 | 2019-03-14 | China University Of Mining And Technology | A reciprocating movement speed and displacement amplifying mechanism and method |
| CN109404362A (en) * | 2018-11-06 | 2019-03-01 | 汉尼康自动化科技（苏州）有限公司 | A kind of device for making to there is bar cylinder to reach no same installation space of bar cylinder |
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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: 20131225 Termination date: 20150629 |
|
| EXPY | Termination of patent right or utility model |