CN203743113U - Limiting hydraulic control device of rotary table of heading machine - Google Patents
Limiting hydraulic control device of rotary table of heading machine Download PDFInfo
- Publication number
- CN203743113U CN203743113U CN201420026497.XU CN201420026497U CN203743113U CN 203743113 U CN203743113 U CN 203743113U CN 201420026497 U CN201420026497 U CN 201420026497U CN 203743113 U CN203743113 U CN 203743113U
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- China
- Prior art keywords
- valve
- mouth
- pilot
- angling cylinder
- hydraulic control
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- 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 - Lifetime
Links
- 239000002828 fuel tank Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
A limiting hydraulic control device of a rotary table of a heading machine comprises a first rotary oil cylinder, a second rotary oil cylinder, a pilot control valve, a limiting valve, a reversing valve and balance valves. A port A of the pilot control valve is connected with a hydraulic control port K1 of the reversing valve. A port B of the pilot control valve is connected with a hydraulic control port K2 of the reversing valve. Pressure oil flowing out of a working port A of the reversing valve enters a rod cavity of the first rotary oil cylinder and a rodless cavity of the second rotary oil cylinder respectively through one balance valve. Pressure oil flowing out of a working port B of the reversing valve enters a rodless cavity of the first rotary oil cylinder and a rod cavity of the second rotary oil cylinder respectively through the other balance valve. The limiting valve and the pilot control valve are connected in parallel. The rotary table is controlled to swing left and right by enabling the pressure oil entering the first rotary oil cylinder and the second rotary oil cylinder to flow or stop, and therefore the rotary oil cylinders can be protected, and the service life of the rotary table is greatly prolonged.
Description
Technical field
The utility model relates to the spacing hydraulic control device of development machine traverse platform.
Background technique
Traverse platform is the vitals of development machine, and its connection frame supports cutting arm, realizes creeping into slotting, sweeping every motion such as lifting, revolution of coal breakage rock, cutting arm of cutterhead, and bears the impulsive load complicated and changeable from cutterhead.Traverse platform is by the angling cylinder driven rotary of arranged on left and right sides, as there is no position limitation protection, very easily causes angling cylinder or the structure part that is connected with angling cylinder damages.In prior art scheme, have the mechanical block of use spacing, but this structure belongs to rigid collision, easily there is distortion largely in welded limiting piece, and welded limiting piece can not be adjusted.A kind of development machine angling cylinder hydraulic stop protective gear is disclosed in publication number " CN202360500U "; it is to move to cut off by limited valve the fluid that enters main valve, and this system requires too high to limited valve, and limited valve pressure-bearing is too large; easily damage, stability is inadequate.
Model utility content
The purpose of this utility model is to propose the spacing hydraulic control device of a kind of development machine traverse platform, can be to the slewing limit of the angling cylinder of arranged on left and right sides.
For achieving the above object, the utility model is taked following technological scheme: the utility model is included in the first angling cylinder and the second angling cylinder that in frame, the left and right sides of corresponding traverse platform is respectively equipped with, the piston rod of the piston rod of the first angling cylinder and the second angling cylinder is connected to the both sides of traverse platform, also comprises pilot-actuated valve, limited valve, selector valve, equilibrium valve, the oil inlet P mouth of pilot-actuated valve is connected with pilot control, oil return inlet T mouth and the fuel tank of pilot-actuated valve communicate, the hydraulic control mouth K1 mouth of the A mouth of pilot-actuated valve and selector valve is connected, the hydraulic control mouth K2 mouth of the B mouth of pilot-actuated valve and selector valve is connected, the oil inlet P mouth of selector valve is connected with pressure oil-source, oil return inlet T mouth and the fuel tank of selector valve communicate, the pressure oil liquid flowing out from the working hole A mouth of selector valve enters respectively the rod chamber of the first angling cylinder and the rodless cavity of the second angling cylinder by equilibrium valve, the pressure oil liquid flowing out from the working hole B mouth of selector valve enters respectively the rod chamber of the first angling cylinder rodless cavity and the second angling cylinder by equilibrium valve, described limited valve and pilot-actuated valve parallel connection, the working hole A mouth that first of limited valve goes out oiler L mouth and pilot-actuated valve is connected, the working hole B mouth that second of limited valve goes out oiler U mouth and pilot-actuated valve is connected.
The utlity model has following good effect: the pressure oil that the utility model enters first, second angling cylinder by switching is controlled the traverse platform action that swings; so not only can protect angling cylinder, to being also the working life of traverse platform great raising.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is limited valve installation diagram of the present utility model.
Embodiment
Embodiment 1
See Fig. 2, in frame 8, the left and right sides of corresponding traverse platform 7 is respectively equipped with the first angling cylinder 5, the second angling cylinder 6, the cylinder body of the cylinder body of the first angling cylinder 5 and the second angling cylinder 6 is fixed in frame 8, and the piston rod of the piston rod of the first angling cylinder 5 and the second angling cylinder 6 is connected to the left and right sides of traverse platform 7.Position at limiting stopper 9, two limiting stoppers 9 of each side welding of traverse platform 7 is symmetrical, the centre of limited valve 2 in two limiting stoppers 9, and be bolted in frame 8 by four.
See Fig. 1, the spacing hydraulic control device of traverse platform of this development machine, comprises the first angling cylinder 5, the second angling cylinder 6, pilot-actuated valve 1, limited valve 2, selector valve 3, equilibrium valve 4.Selector valve 3 is three position four-way directional control valve.
The oil inlet P mouth of pilot-actuated valve 1 is connected with pilot control 11, oil return inlet T mouth and the fuel tank 13 of pilot-actuated valve 1 communicate, the hydraulic control mouth K1 mouth of the working hole A mouth of pilot-actuated valve 1 and selector valve 3 is connected, the hydraulic control mouth K2 mouth of the working hole B mouth of pilot-actuated valve 1 and selector valve 3 is connected, the oil inlet P mouth of selector valve 3 is connected with pressure oil-source 12, oil return inlet T mouth and the fuel tank 13 of selector valve 3 communicate, the pressure oil liquid flowing out from the working hole A mouth of selector valve 3 enters respectively the rod chamber of the first angling cylinder 5 and the rodless cavity of the second angling cylinder 6 by equilibrium valve 4, the pressure oil liquid flowing out from the working hole B mouth of selector valve 3 enters respectively the rodless cavity of the first angling cylinder 5 and the rod chamber of the second angling cylinder 6 by equilibrium valve 4.Described limited valve 2 and pilot-actuated valve 1 parallel connection, the working hole L mouth of limited valve 2 and the A mouth of pilot-actuated valve 1 are connected, and the working hole U mouth of limited valve 2 and the B mouth of pilot-actuated valve 1 are connected.
Selector valve 3 is generally in holding position, and pilot-actuated valve 1 is also in corresponding maintenance gear, and limited valve 2 is in off state.
When the handle of pilot-actuated valve 1 pushes a side, suppose to push " left side " indicative mark, guide oil just enters in pilot-actuated valve 1 from the P mouth of pilot-actuated valve 1, then flow out from B mouth, arrive the hydraulic control mouth K2 of selector valve 3, the spool of selector valve 3 moves to right, the left position work of selector valve 3, and the P mouth of selector valve 3 and A mouth are logical, B mouth and T mouth lead to.Now pressure oil enters through the P of selector valve 3 mouth, flow out from A mouth, enter respectively the rod chamber of the first angling cylinder 5 and the rodless cavity of the second angling cylinder 6 through equilibrium valve 4, the first angling cylinder 5 is retracted, the second angling cylinder 6 stretches out, and traverse platform starts to swing left, and the pressure oil liquid that the rod chamber of the rodless cavity of the first angling cylinder 5 and the second angling cylinder 6 flows out is through equilibrium valve 4, enter from the B mouth of selector valve 3, flow into fuel tank 13 by T mouth.
In the time that traverse platform arrives left limit point, the limiting stopper 9 in left side touches limited valve 2, and limited valve 2 is connected, and the guide's fluid flowing out from the B mouth of pilot-actuated valve, through U point, flows to L point, then flows to the A mouth of pilot-actuated valve 1, directly oil sump tank 13.The hydraulic control mouth K2 mouth that now arrives selector valve 3 without fluid, selector valve returns meta, and working connection pressure oil is cut off, and the first angling cylinder 5 and the second angling cylinder 6 stop action, play the effect of traverse platform left limit.
When the handle of pilot-actuated valve pushes " right side " indicative mark, guide's fluid just enters in pilot control valve body from the P mouth of pilot-actuated valve 1, then flow out from A mouth, arrive the hydraulic control mouth K1 of selector valve 3, the spool of selector valve 3 moves to left, the right position work of valve, the P mouth of selector valve 3 and B mouth are logical, A mouth and T mouth lead to.Now pressure oil enters through the P of selector valve 3 mouth, flows out from B mouth, enters respectively the rodless cavity of the first angling cylinder 5 and the rod chamber of the second angling cylinder 6 through equilibrium valve 4, and the first angling cylinder 5 stretches out, and the second angling cylinder 6 is retracted, and traverse platform starts to swing to the right.The pressure oil liquid that the rodless cavity of the rod chamber of the first angling cylinder 5 and the second angling cylinder 6 flows out, through equilibrium valve 4, enters from the A mouth of selector valve 3, flows into fuel tank 13 by T mouth.
In the time that traverse platform arrives right limit point, the limiting stopper 9 on right side touches limited valve 2, and limited valve 2 is connected, and the guide's fluid flowing out from the A mouth of pilot-actuated valve, through L point, flows to U point, then flows to the B mouth of pilot-actuated valve, directly oil sump tank 13.The hydraulic control mouth K1 that now arrives selector valve 3 without fluid, selector valve returns meta, and working connection pressure oil is cut off, and first, second angling cylinder stops action, plays the effect of traverse platform right limit.
Claims (1)
1. the spacing hydraulic control device of development machine traverse platform, be included in frame (8) the first angling cylinder (5) and the second angling cylinder (6) that above the left and right sides of corresponding traverse platform (7) is respectively equipped with, the piston rod of the piston rod of the first angling cylinder (5) and the second angling cylinder (6) is connected to the both sides of traverse platform (7), it is characterized in that: also comprise pilot-actuated valve (1), limited valve (2), selector valve (3), equilibrium valve (4); the oil inlet P mouth of pilot-actuated valve (1) is connected with pilot control (11), the oil return inlet T mouth of pilot-actuated valve (1) and fuel tank (13) communicate, the hydraulic control mouth K1 mouth of the A mouth of pilot-actuated valve (1) and selector valve (3) is connected, the hydraulic control mouth K2 mouth of the B mouth of pilot-actuated valve (1) and selector valve (3) is connected, the oil inlet P mouth of selector valve (3) is connected with pressure oil-source (12), the oil return inlet T mouth of selector valve (3) and fuel tank (13) communicate, the pressure oil liquid flowing out from the working hole A mouth of selector valve (3) enters respectively the rod chamber of the first angling cylinder (5) and the rodless cavity of the second angling cylinder (6) by equilibrium valve (4), the pressure oil liquid flowing out from the working hole B mouth of selector valve (3) enters respectively the rod chamber of the first angling cylinder (5) rodless cavity and the second angling cylinder (6) by equilibrium valve (4), described limited valve (2) and pilot-actuated valve (1) parallel connection, the working hole A mouth that first of limited valve (2) goes out oiler L mouth and pilot-actuated valve (1) is connected, the working hole B mouth that second of limited valve (2) goes out oiler U mouth and pilot-actuated valve (1) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420026497.XU CN203743113U (en) | 2014-01-15 | 2014-01-15 | Limiting hydraulic control device of rotary table of heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420026497.XU CN203743113U (en) | 2014-01-15 | 2014-01-15 | Limiting hydraulic control device of rotary table of heading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743113U true CN203743113U (en) | 2014-07-30 |
Family
ID=51342918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420026497.XU Expired - Lifetime CN203743113U (en) | 2014-01-15 | 2014-01-15 | Limiting hydraulic control device of rotary table of heading machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203743113U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113232719A (en) * | 2021-06-24 | 2021-08-10 | 上海三一重机股份有限公司 | Steering system and loader |
-
2014
- 2014-01-15 CN CN201420026497.XU patent/CN203743113U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113232719A (en) * | 2021-06-24 | 2021-08-10 | 上海三一重机股份有限公司 | Steering system and loader |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160803 Address after: 213022 No. 36 middle Huashan Road, Xinbei District, Jiangsu, Changzhou Patentee after: SINOMACH CHANGLIN Co.,Ltd. Address before: 213002 No. 10 Chang Linzhu Road, bell tower area, Jiangsu, Changzhou Patentee before: CHANGLIN Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |