CN203834533U - Lifting and limiting device of loader movable arm - Google Patents
Lifting and limiting device of loader movable arm Download PDFInfo
- Publication number
- CN203834533U CN203834533U CN201420204734.7U CN201420204734U CN203834533U CN 203834533 U CN203834533 U CN 203834533U CN 201420204734 U CN201420204734 U CN 201420204734U CN 203834533 U CN203834533 U CN 203834533U
- Authority
- CN
- China
- Prior art keywords
- movable arm
- control valve
- loader
- lifting
- limit switch
- 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 relates to a lifting and limiting device of a loader movable arm. The lifting and limiting device of the loader movable arm comprises the loader movable arm, a limiting switch is arranged on the loader movable arm, and the limiting switch is connected with a handle control device through a control wire. The handle control device is communicated with a control valve through a pipeline, and the control valve is communicated with a movable arm oil cylinder through a pipeline. The limiting switch is arranged on the loader movable arm, the limiting switch is connected with the handle control device through the control wire, and the handle control device is communicated with the control valve through an oil pipe. The control valve controls the movable arm oil cylinder to be opened and closed, the loader movable arm jacks the limiting switch to be opened when being lifted to a certain position, after the limiting switch is disconnected, signals are sent to the handle control device, and an input power source of the handle control device is disconnected. Accordingly, no hydraulic oil is supplied to the movable arm oil cylinder and the control valve, and the movable arm oil cylinder and the control valve are made to stop acting. The structure is simple, mounting is convenient, the reliability is high, and the fault rate of the movable arm oil cylinder, a front frame and the movable arm can be effectively lowered.
Description
technical field:
The utility model belongs to loader technical field, is specifically related to a kind of the lifting of the movable arms of loaders stopping means.
background technology:
At present, loader product on market, when its swing arm promotes, most of stroke of boom cylinder that relies on comes spacing, or welded limiting piece comes spacing on swing arm, utilize boom cylinder stroke limit, be easy to cause the increase of oil cylinder fault, welded limiting piece on swing arm, easily causes the increase of swing arm or front frame for loader fault.
utility model content:
In sum, in order to overcome the deficiency of prior art problem, the utility model provides a kind of the lifting of the movable arms of loaders stopping means, it is, on the swing arm of loader, limit switch is set, limit switch is connected with hand grip control means by control line, hand grip control means is communicated with control valve by oil pipe, control valve is controlled boom cylinder and is opened and closed, the lifting of the movable arms of loaders backs down limit switch during to certain position, limit switch sends signal to hand grip control means after disconnecting, the input power of hand grip control means is disconnected, thereby make without hydraulic oil, to feed in boom cylinder and control valve, thereby make boom cylinder, control valve stops action.Feature be simple in structure, easy for installation, reliability is high, can effectively reduce the fault rate of boom cylinder, front frame and swing arm.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of the lifting of the movable arms of loaders stopping means, wherein: comprise swing arm, limit switch, boom cylinder, control valve, hand grip control means and limit switch, limit switch is arranged on loading arm, limit switch is connected with hand grip control means by control line, hand grip control means is communicated with control valve by pipeline, and control valve is communicated with boom cylinder by pipeline.
Further, described pipeline is connection rubber tube.
The beneficial effects of the utility model are:
The utility model is, on the swing arm of loader, limit switch is set, limit switch is connected with hand grip control means by control line, hand grip control means is communicated with control valve by oil pipe, control valve is controlled boom cylinder and is opened and closed, the lifting of the movable arms of loaders backs down limit switch during to certain position, limit switch sends signal to hand grip control means after disconnecting, the input power of hand grip control means is disconnected, thereby make without hydraulic oil, to feed in boom cylinder and control valve, thereby make boom cylinder, control valve stop action.Feature be simple in structure, easy for installation, reliability is high, can effectively reduce the fault rate of boom cylinder, front frame and swing arm.
accompanying drawing explanation:
Fig. 1 is structural representation of the present utility model.
the specific embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of the lifting of the movable arms of loaders stopping means, comprise swing arm 3, limit switch 4, boom cylinder 1, control valve 2, hand grip control means 6 and limit switch 4, limit switch 4 is arranged on loading arm 3, limit switch 4 is connected with hand grip control means 6 by control line 5, hand grip control means 6 is communicated with control valve 2 by pipeline 7, and control valve 2 is communicated with boom cylinder 1 by pipeline 7, and described pipeline 7 is connection rubber tube.
During use; when swing arm 3 rises to behind permanent position; touching limit switch 4; limit switch 4 starts signal to hand grip control means 6 by control line 5; make hand grip control means 6 power-off; thereby make the oil pump cannot be to control valve 2 and boom cylinder 1 fuel feeding, boom cylinder 1 and control valve 2 stop action, reach the object of position limitation protection swing arm 3.
Be noted that, the above embodiment is to the explanation of technical solutions of the utility model and unrestricted, other modification that is equal to replacement or makes according to prior art of affiliated technical field those of ordinary skill, as long as do not exceed thinking and the scope of technical solutions of the utility model, within all should being included in the desired interest field of the utility model.
Claims (2)
1. a lifting of the movable arms of loaders stopping means, it is characterized in that: comprise swing arm (3), limit switch (4), boom cylinder (1), control valve (2), hand grip control means (6) and limit switch (4), limit switch (4) is arranged on loading arm (3), limit switch (4) is connected with hand grip control means (6) by control line (5), hand grip control means (6) is communicated with control valve (2) by pipeline (7), and control valve (2) is communicated with boom cylinder (1) by pipeline (7).
2. the lifting of the movable arms of loaders stopping means according to claim 1, is characterized in that: described pipeline (7) is connection rubber tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420204734.7U CN203834533U (en) | 2014-04-25 | 2014-04-25 | Lifting and limiting device of loader movable arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420204734.7U CN203834533U (en) | 2014-04-25 | 2014-04-25 | Lifting and limiting device of loader movable arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203834533U true CN203834533U (en) | 2014-09-17 |
Family
ID=51512393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420204734.7U Expired - Fee Related CN203834533U (en) | 2014-04-25 | 2014-04-25 | Lifting and limiting device of loader movable arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203834533U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460903A (en) * | 2017-08-11 | 2017-12-12 | 徐州徐工挖掘机械有限公司 | A kind of super-tonnage forward shovel and its cylinder buffer system |
-
2014
- 2014-04-25 CN CN201420204734.7U patent/CN203834533U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460903A (en) * | 2017-08-11 | 2017-12-12 | 徐州徐工挖掘机械有限公司 | A kind of super-tonnage forward shovel and its cylinder buffer system |
| CN107460903B (en) * | 2017-08-11 | 2020-03-20 | 徐州徐工矿业机械有限公司 | Super-tonnage face shovel excavator and oil cylinder buffering system thereof |
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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: 20140917 Termination date: 20150425 |
|
| EXPY | Termination of patent right or utility model |