CN204591836U - The pumping closed type hydraulic system of the magic hand for spraying concrete of tool buffer function - Google Patents
The pumping closed type hydraulic system of the magic hand for spraying concrete of tool buffer function Download PDFInfo
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- CN204591836U CN204591836U CN201520044454.9U CN201520044454U CN204591836U CN 204591836 U CN204591836 U CN 204591836U CN 201520044454 U CN201520044454 U CN 201520044454U CN 204591836 U CN204591836 U CN 204591836U
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- hydraulic fluid
- fluid port
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- pumping
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Abstract
A kind of pumping closed type hydraulic system of magic hand for spraying concrete of tool buffer function, comprise the first actuator port A and the second actuator port B of enclosed plunger variable pump, this is first years old, second actuator port is respectively with first, the rodless cavity hydraulic fluid port of the second pumping oil cylinder connects, and this first, connect flushing valve between the rodless cavity hydraulic fluid port of the second pumping oil cylinder, be characterized in, the first positioning pressure hydraulic fluid port X3 that the variable cylinder of this enclosed plunger variable pump has and the second positioning pressure hydraulic fluid port X4 is respectively by the first pipeline, second pipe is communicated with the first actuator port A with this second actuator port B, and this first pipeline and second pipe are respectively equipped with the first one-way valve and the second one-way valve.So, when first, second pump oil cylinder working is to stroke end, because compression shock makes the pilot pressure in variable cylinder sharply raise, by opening first, second one-way valve to reduce pilot pressure, the output of the large discharge of enclosed plunger variable pump can be reduced, and realize buffering.
Description
Technical field
The utility model relates to the pumping closed type hydraulic system of magic hand for spraying concrete, particularly relates to a kind of pumping closed type hydraulic system of magic hand for spraying concrete of tool buffer function.
Background technique
As shown in Figure 1, the enclosed plunger variable pump 1 of the pumping closed type hydraulic system of existing concrete jet robot has the first actuator port A and the second actuator port B, this first actuator port A is connected with the rodless cavity hydraulic fluid port of the first pumping oil cylinder 7, this second actuator port B is connected with the rodless cavity hydraulic fluid port of the second pumping oil cylinder 8, and the rod chamber hydraulic fluid port of this first, second pumping oil cylinder 7,8 is directly connected; And connecing flushing valve 6 between the rodless cavity hydraulic fluid port of this first, second pumping oil cylinder 7,8, flushing valve 6 realizes supplementing of deep fat and displacement, makes system held leak balance and thermal equilibrium, reaching the object of heat radiation.But, this closed type hydraulic system is when first, second pump oil cylinder working is to stroke end, cannot eliminate because compression shock makes the pilot pressure in variable cylinder 3 sharply raise, enclosed plunger variable pump 1 is made to export larger flow, because flow pulsation produces pressure pulsation, make first, second pumping oil cylinder quick washing cylinder bottom, thus send violent Strike note and vibration.
Model utility content
Technical problem to be solved in the utility model is, for above-mentioned the deficiencies in the prior art, provides the pumping closed type hydraulic system of the solidifying native jet robot of the tool buffer function of a kind of stable working, reliable performance.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is: a kind of pumping closed type hydraulic system of magic hand for spraying concrete of tool buffer function, it comprises enclosed plunger variable pump, this enclosed plunger variable pump has the first actuator port A and the second actuator port B, this first actuator port A is connected with the rodless cavity hydraulic fluid port of the first pumping oil cylinder, second actuator port B is connected with the rodless cavity hydraulic fluid port of the second pumping oil cylinder, the rod chamber hydraulic fluid port of this first pumping oil cylinder is directly communicated with the rod chamber hydraulic fluid port of this second pumping oil cylinder, connect flushing valve between the rodless cavity hydraulic fluid port of this first pumping oil cylinder and the rodless cavity hydraulic fluid port of this second pumping oil cylinder, this enclosed plunger variable pump also has variable cylinder, this variable cylinder has the first positioning pressure hydraulic fluid port X3 and the second positioning pressure hydraulic fluid port X4, be characterized in, described first positioning pressure hydraulic fluid port X3 is communicated with this second actuator port B by the first pipeline, this the second positioning pressure hydraulic fluid port X4 is communicated with this first actuator port A by second pipe, and this first pipeline is provided with the first one-way valve, second pipe is provided with the second one-way valve.
Compared with prior art, the beneficial effects of the utility model are: when the first pumping oil cylinder and the second pump oil cylinder working are to stroke end, because impacting, the pilot pressure in variable cylinder is sharply raised, by opening the second one-way valve and the first one-way valve to reduce pilot pressure, the output of the large discharge of enclosed pump can be reduced like this, thus realize buffering.
Accompanying drawing explanation
Fig. 1 is existing pumping closed type hydraulic system.
Fig. 2 is pumping closed type hydraulic system of the present utility model.
Embodiment
As shown in Figure 2, the utility model is a kind of pumping closed type hydraulic system of magic hand for spraying concrete of tool buffer function, it is the improvement carried out on the basis of existing pumping closed type hydraulic system, comprise the first actuator port A and the second actuator port B of enclosed plunger variable pump 1 equally, this first actuator port A is connected with the rodless cavity hydraulic fluid port of the first pumping oil cylinder 7, second actuator port B is connected with the rodless cavity hydraulic fluid port of the second pumping oil cylinder 8, and the rod chamber hydraulic fluid port of this first pumping oil cylinder 7 rod chamber hydraulic fluid port and the second pumping oil cylinder 8 is directly connected; And connect flushing valve 6 between the rodless cavity hydraulic fluid port of the rodless cavity hydraulic fluid port of this first pumping oil cylinder 7 and the second pumping oil cylinder 8, this flushing valve 6 realizes supplementing of deep fat and displacement, makes system held leak balance and thermal equilibrium, reaching the object of heat radiation.Unlike, first positioning pressure hydraulic fluid port X3 of the variable cylinder 3 of enclosed plunger variable pump 1 is communicated with this second actuator port B by the first pipeline 9 by the utility model, second positioning pressure hydraulic fluid port X4 is communicated with this first actuator port A by second pipe 10, and this first pipeline 9 and second pipe 10 are respectively equipped with the first one-way valve 4 and the second one-way valve 5.
When the pilot pressure driving pump servovalve 2 of the pilot pressure hydraulic fluid port Y1 of enclosed plunger variable pump 1 commutates, at this moment the pilot pressure of pilot pressure hydraulic fluid port X1 makes the swash plate of pump produce certain inclination angle, enclosed plunger variable pump 1 exports corresponding flow, the stepless variable of output flow between 0 to 100%, proportional with the guide's pressure reduction being applied to two pilot pressure hydraulic fluid port Y1 and Y2.When the work of first, second pumping oil cylinder 7,8 is to stroke end, the pilot pressure of the first positioning pressure hydraulic fluid port X3 in variable cylinder 3 can sharply raise, the first one-way valve 4 be communicated with is opened by this pilot pressure, the pilot pressure raised will be released, the pilot pressure of release enters flushing valve 6, carried out cooling and rinsing, be this avoid because higher pilot pressure causes enclosed plunger variable pump 1 to export large discharge, thus realized the object of buffering.In like manner, after the pilot pressure of the pilot pressure hydraulic fluid port Y2 of enclosed plunger variable pump 1 carrys out the commutation of oily promotion servovalve 2, when the work of first, second pumping oil cylinder 7,8 is to stroke end, the pilot pressure of the second positioning pressure hydraulic fluid port X4 is released by the second one-way valve 5, the pilot pressure of release enters flushing valve 6 equally, carried out cooling and rinsing, achieved the object of buffering.
Claims (1)
1. the pumping closed type hydraulic system of the magic hand for spraying concrete of a tool buffer function, it comprises enclosed plunger variable pump (1), this enclosed plunger variable pump (1) has the first actuator port A and the second actuator port B, this first actuator port A is connected with the rodless cavity hydraulic fluid port of the first pumping oil cylinder (7), second actuator port B is connected with the rodless cavity hydraulic fluid port of the second pumping oil cylinder (8), the rod chamber hydraulic fluid port of this first pumping oil cylinder (7) is directly communicated with the rod chamber hydraulic fluid port of this second pumping oil cylinder (8), connect flushing valve (6) between the rodless cavity hydraulic fluid port of this first pumping oil cylinder (7) and the rodless cavity hydraulic fluid port of this second pumping oil cylinder (8), this enclosed plunger variable pump (1) also has variable cylinder (3), this variable cylinder (3) has the first positioning pressure hydraulic fluid port X3 and the second positioning pressure hydraulic fluid port X4, it is characterized in that, described first positioning pressure hydraulic fluid port X3 is communicated with this second actuator port B by the first pipeline (9), this the second positioning pressure hydraulic fluid port X4 is communicated with this first actuator port A by second pipe (10), and this first pipeline (9) is provided with the first one-way valve (4), second pipe (10) is provided with the second one-way valve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520044454.9U CN204591836U (en) | 2015-01-22 | 2015-01-22 | The pumping closed type hydraulic system of the magic hand for spraying concrete of tool buffer function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520044454.9U CN204591836U (en) | 2015-01-22 | 2015-01-22 | The pumping closed type hydraulic system of the magic hand for spraying concrete of tool buffer function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204591836U true CN204591836U (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520044454.9U Expired - Fee Related CN204591836U (en) | 2015-01-22 | 2015-01-22 | The pumping closed type hydraulic system of the magic hand for spraying concrete of tool buffer function |
Country Status (1)
| Country | Link |
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| CN (1) | CN204591836U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635885A (en) * | 2022-05-18 | 2022-06-17 | 徐工集团工程机械股份有限公司建设机械分公司 | Oil cylinder driven closed type traveling system and working method thereof |
-
2015
- 2015-01-22 CN CN201520044454.9U patent/CN204591836U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635885A (en) * | 2022-05-18 | 2022-06-17 | 徐工集团工程机械股份有限公司建设机械分公司 | Oil cylinder driven closed type traveling system and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 410014 Hunan province Changsha environmental science and Technology Park in Yuhua District Auto Road No. 6 Patentee after: Changsha Kodak intelligent equipment Limited by Share Ltd Address before: 410000 Hunan province Changsha environmental science and Technology Park in Yuhua District Auto Road No. 6 Patentee before: Changsha KEDA Construction Machinery Manufacturing Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20200122 |