CN205742339U - The excavator special arm raise-lower hydraulic device of improvement - Google Patents
The excavator special arm raise-lower hydraulic device of improvement Download PDFInfo
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- CN205742339U CN205742339U CN201620431494.3U CN201620431494U CN205742339U CN 205742339 U CN205742339 U CN 205742339U CN 201620431494 U CN201620431494 U CN 201620431494U CN 205742339 U CN205742339 U CN 205742339U
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- oil
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Abstract
The utility model discloses the excavator special arm raise-lower hydraulic device of a kind of improvement, including bucket arm cylinder, boom cylinder, banked direction control valves, hydraulic pump, hydraulic oil container, two one-way throttling devices；Two hydraulic fluid ports of described bucket arm cylinder are connected with banked direction control valves by two bucket arm cylinder pipelines respectively；Two hydraulic fluid ports of described boom cylinder are connected with banked direction control valves by two boom cylinder pipelines respectively；The oil-out of described hydraulic pump is connected with the oil-in of banked direction control valves by pipeline, and the oil-in of hydraulic pump is connected with hydraulic oil container by pipeline；Two one-way throttling devices are separately positioned on a boom cylinder pipeline and a bucket arm cylinder pipeline.Owing to this utility model has installed two one-way throttling devices additional, it is used for regulating swing arm and declines and dipper reclaims speed so that it is speed reaches reasonable request, reduces the impact of complete machine so that be this utility model good stability, easily operated.
Description
Technical field
This utility model relates to a kind of engineering machinery, particularly relates to the excavator special arm raise-lower hydraulic device of a kind of improvement.
Background technology
Excavator overlength arm designs on the basis of standard arm type, as it is shown in figure 1, it includes bucket arm cylinder 1 ', boom cylinder 2 ', banked direction control valves 3 ', hydraulic pump 4 ', hydraulic oil container 5 '；Described bucket arm cylinder 1 ' and boom cylinder 2 ' are connected with banked direction control valves 3 ' by pipeline respectively, and the oil-out of hydraulic pump 4 ' is connected with the oil-in of banked direction control valves 3 ' by pipeline, and the oil-in of hydraulic pump 4 ' is connected with hydraulic oil container 5 ' by pipeline.Use this technical scheme, overlength arm is mounted on the type of standard arm, overlength arm is lifted with the oil cylinder of original lifting standard arm, overlength arm will be caused when declining, owing to overlength arm is than standard brachium and Heavy Weight, speed when overlength dipper is regained is more many than the type of installation standard arm, wayward, big to the hydraulic component impact of complete machine.
Summary of the invention
The purpose of this utility model is to provide the excavator special arm raise-lower hydraulic device of a kind of good stability, easily operated improvement.
For achieving the above object, technical solution of the present utility model is:
This utility model is the excavator special arm raise-lower hydraulic device of a kind of improvement, including bucket arm cylinder, boom cylinder, banked direction control valves, hydraulic pump, hydraulic oil container；Two hydraulic fluid ports of described bucket arm cylinder are connected with banked direction control valves by two bucket arm cylinder pipelines respectively；Two hydraulic fluid ports of described boom cylinder are connected with banked direction control valves by two boom cylinder pipelines respectively；The oil-out of described hydraulic pump is connected with the oil-in of banked direction control valves by pipeline, and the oil-in of hydraulic pump is connected with hydraulic oil container by pipeline；Also include two one-way throttling devices；Two one-way throttling devices are separately positioned on a boom cylinder pipeline and a bucket arm cylinder pipeline.
Described one-way throttling device is adjustable one-way throttle valve.
After using such scheme, owing to this utility model installs one-way throttling device at the boom cylinder pipeline of connection boom cylinder additional on the bucket arm cylinder pipe connecting bucket arm cylinder, decline and dipper recovery speed for regulating swing arm, its speed is made to reach reasonable request, reduce the impact of complete machine, make this utility model good stability, easily operated, greatly improve because too fast, big to the complete machine impact problem of the speed that causes of special feeling of heaviness in the arm amount.
With specific embodiment, this utility model is further described below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the fundamental diagram of existing excavator special arm raise-lower hydraulic device；
Fig. 2 is fundamental diagram of the present utility model.
Detailed description of the invention
As in figure 2 it is shown, this utility model is the excavator special arm raise-lower hydraulic device of a kind of improvement, including bucket arm cylinder 1, boom cylinder 2, banked direction control valves 3, hydraulic pump 4,5, two one-way throttling devices 6 of hydraulic oil container.
Two hydraulic fluid ports of described bucket arm cylinder 1 are connected with banked direction control valves 3 by two bucket arm cylinder pipelines 11,12 respectively, arrange one-way throttling device 6 on the cylinder pipe 11 of rod chamber being positioned at bucket arm cylinder 1；Two hydraulic fluid ports of described boom cylinder 2 are connected with banked direction control valves by two boom cylinder pipelines 21,22 respectively, and a boom cylinder pipeline 21 wherein arranges one-way throttling device 6；The oil-out of described hydraulic pump 4 is connected with the oil-in of banked direction control valves 3 by pipeline, and the oil-in of hydraulic pump 4 is connected with hydraulic oil container 5 by pipeline.
In the present embodiment, described one-way throttling device 6 is adjustable one-way throttle valve, and the effect of this one-way throttling device 6 is the flow of one direction hydraulic oil of regulation, and the flow of another direction hydraulic oil is constant.
Emphasis of the present utility model is that and is additionally arranged one-way throttling device.
The above, it is only this utility model preferred embodiment, the version of one-way throttling device can have multiple, therefore can not limit, with this, the scope that this utility model is implemented, the equivalence change i.e. made according to this utility model claim and description with modify, all should still belong in the range of this utility model patent contains.
Claims (2)
1. an excavator special arm raise-lower hydraulic device for improvement, including bucket arm cylinder, boom cylinder, banked direction control valves, hydraulic pump, hydraulic oil container；Two hydraulic fluid ports of described bucket arm cylinder are connected with banked direction control valves by two bucket arm cylinder pipelines respectively；Two hydraulic fluid ports of described boom cylinder are connected with banked direction control valves by two boom cylinder pipelines respectively；The oil-out of described hydraulic pump is connected with the oil-in of banked direction control valves by pipeline, and the oil-in of hydraulic pump is connected with hydraulic oil container by pipeline；It is characterized in that: also include two one-way throttling devices；Two one-way throttling devices are separately positioned on a boom cylinder pipeline and a bucket arm cylinder pipeline.
The excavator special arm raise-lower hydraulic device of improvement the most according to claim 1, it is characterised in that: described one-way throttling device is adjustable one-way throttle valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620431494.3U CN205742339U (en) | 2016-05-13 | 2016-05-13 | The excavator special arm raise-lower hydraulic device of improvement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620431494.3U CN205742339U (en) | 2016-05-13 | 2016-05-13 | The excavator special arm raise-lower hydraulic device of improvement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205742339U true CN205742339U (en) | 2016-11-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620431494.3U Active CN205742339U (en) | 2016-05-13 | 2016-05-13 | The excavator special arm raise-lower hydraulic device of improvement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205742339U (en) |
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2016
- 2016-05-13 CN CN201620431494.3U patent/CN205742339U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |