CN2881144Y - Pumping structure capable of easy changing concrete piston - Google Patents
Pumping structure capable of easy changing concrete piston Download PDFInfo
- Publication number
- CN2881144Y CN2881144Y CN 200520121342 CN200520121342U CN2881144Y CN 2881144 Y CN2881144 Y CN 2881144Y CN 200520121342 CN200520121342 CN 200520121342 CN 200520121342 U CN200520121342 U CN 200520121342U CN 2881144 Y CN2881144 Y CN 2881144Y
- Authority
- CN
- China
- Prior art keywords
- cylinder
- piston
- auxiliary
- concrete
- master cylinder
- 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
Links
- 238000005086 pumping Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003921 oil Substances 0.000 claims abstract description 16
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 239000002828 fuel tank Substances 0.000 claims description 10
- 230000000295 complement effect Effects 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000007812 deficiency Effects 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The utility model relates to a pumping structure capable of easy changing concrete piston wherein the contact between an auxiliary piston rod and the wall of the front part of an auxiliary oil cylinder is leaktight, the pumping structure has a change valve and the front cavity and back cavity of the control auxiliary oil cylinder are respectively connected with an oil tank and a pressure oil source while the communication can be a reversed one. In the structure, the intermediate joint-bar is removed, the oil reservoirs of the main oil cylinder and the auxiliary oil cylinder are separated and the control is accomplished by a control valve, so when the piston for concrete retracts, the control valve injects hydraulic oil into the auxiliary oil cylinder to push the spacing piston back and the impossibility of the hydraulic oil circulation in the main oil cylinder when the helps the piston for concrete move back accurately into the water tank. The replacement and maintenance of the piston for concrete is easy, convenient and quick, the system works reliably without the possibility of incapable to retract or moving forward after retraction, and the deficiency in the structure of the prior pumping system capable of easy changing concrete piston is eliminated.
Description
Technical field
The utility model relates to a kind of concrete pumping structure, relates in particular to a kind of concrete pumping structure that is easy to change the concrete piston.
Background technique
In concrete conveying equipment, the concrete piston belongs to easily worn part, needs often to change.And because when work, the concrete piston is to be arranged in to carry cylinder, when needs are changed, the concrete piston must be retracted into the water tank from the conveying cylinder and can carry out demolition and replacement, keep in repair.Therefore, the design of concrete pumping structure need be considered the easy-to-dismount problem of concrete piston.
Existing typical concrete pumping structure mainly contains two kinds:
First kind is that the concrete piston is connected on the main piston rod by middle brace rod, and middle brace rod can connect by screw rod with being connected of concrete piston, main piston rod, also can connect by cutting ferrule.When needs dismounting concrete piston, at first middle brace rod is pulled down, crawl operation main piston rod advances then, make main piston rod near the concrete piston, main piston rod is directly linked together with the concrete piston, last crawl is operated main piston rod and is retreated, and the concrete piston is retracted in the water tank again.This structure the concrete piston is carry out demolition and replacement finish after, install by the opposite flow process of above-mentioned process again, it is very inconvenient to operate, needed time is long, and concrete pumping construction and equipment are all had a significant impact.
Second kind, structure as depicted in figs. 1 and 2, than the repair and replacement of first kind of more easy and more convenient realization concrete of structure piston.
This concrete pumping structure comprise in regular turn the conveying cylinder 1 that connects ', water tank 3, master cylinder 4 ' and auxiliary cylinder 5 '; Concrete piston 2 ' be installed in carry cylinder 1 ' in; Water tank 3 ' connection be installed in carry cylinder 1 ' the rear end; Master cylinder 4 ' connection be installed in water tank 3 ' the rear end; Auxiliary cylinder 5 ' connection be contained in master cylinder 4 ' the rear end; Master cylinder 4 ' comprise cylinder body 41 ', be installed in cylinder body 41 ' in main piston 43 ', its rear end connect be installed in main piston 43 ' front end and its front end connect be installed in concrete piston 2 ' the rear end main piston rod 42 ' with and front end connect be installed in main piston 43 ' the rear end and its rear end insert stretch auxiliary cylinder cylinder body 51 ' in auxiliary piston rod 44 ', main piston rod 42 ' and auxiliary piston rod 44 ' also can be a unitary piston rod, main piston 43 ' be sleeved on its stage casing; Auxiliary cylinder 5 ' comprise cylinder body 51 ' and be installed in cylinder body 51 ' in spacing piston 53 ', the piston rod of spacing piston 53 ' not; Main piston 43 ' with master cylinder cylinder body 41 ' be divided into ante-chamber 411 ' and back cavity 412 ', spacing piston 53 ' also with auxiliary cylinder cylinder body 51 ' be divided into ante-chamber 511 ' and back cavity 512 '; Auxiliary cylinder 51 ' ante-chamber 511 ' directly and master cylinder 41 ' back cavity 412 ' communicate, the centre separates without any sealing; Auxiliary cylinder back cavity 512 ' connection selector valve 6 ', selector valve 6 ' can realize two kinds of mode of communicating, a kind of connection auxiliary cylinder back cavity 512 ' and one-way valve 8 ', one-way valve 8 ' connection pressure oil-source, the hydraulic oil flow at one-way valve 8 ' assurance pressure oil-source place can not be back to pressure oil-source to pump structure, another kind of connection auxiliary cylinder back cavity 512 ' and fuel tank 7 '.
This structure has been saved middle brace rod.
In the normal pumping working state, selector valve 6 ' connected state as shown in Figure 1, auxiliary cylinder back cavity 512 ' by one-way valve 8 ' and pressure oil-source be communicated with, spacing piston 53 ' be pushed is also spacing at auxiliary cylinder cylinder body 51 ' foremost, because one-way valve 8 ' locking, spacing piston 53 ' can not retreat, when the spacing piston 53 of auxiliary piston rod 44 ' run into ' will limited piston 53 ' block, the limit position of restriction auxiliary piston rod 44 ' backward motion, that is limited the limit position of motion of main piston 43 ' and concrete piston 2 ' backward, make concrete piston 2 ' remain at work carry cylinder 1 ' in.
When 2 ' time of concrete piston is changed or cleaned to needs, selector valve 6 ' connected state as shown in Figure 2, auxiliary cylinder back cavity 512 ' and fuel tank 7 ' connection, spacing piston 53 ' spacing state remove, crawl master cylinder 4 ' make main piston 43 ' retreat, by the spacing piston 53 of auxiliary piston rod 44 ' promotion ' after move, by main piston rod 42 ' drive concrete piston 2 ' be retracted in the water tank, the concrete piston is changed or is cleaned simultaneously.
But, because master cylinder 4 ' the rear end be provided with buffer loop 45 ', master cylinder cylinder body 41 ' ante-chamber 411 ' with back cavity 412 ' hydraulic oil gang up and hydraulic pressure is identical, and main piston rod 42 ' than auxiliary piston rod 44 ' thick, be main piston 43 ' the stress surface of front end little than the stress surface of its rear end, before master cylinder, under the identical situation of back cavity hydraulic pressure, produce resistance forward, make the power of main piston 43 ' retreat less, and also to drive concrete piston 2 ' and promote spacing piston 53 ' retreat simultaneously, resistance ratios is bigger, therefore is easy to produce the situation that not exclusively puts in place that retreats; And because the buffer loop 45 of master cylinder ' existence; make concrete piston 2 ' when retreating; in the moment of shutting down operation; generation is with the power of main piston 43 ' push away forward; concrete piston 2 ' can move forward again then; make concrete piston 2 ' can not fall back on fully position enter water tank 3 ', do not realize the purpose of easy replacing causing bigger trouble on the contrary.
In sum, concrete pumping structure of the prior art in the replacing and maintenance problem that solve the concrete piston, exists defective and deficiency, is necessary to be improved.
Summary of the invention
The purpose of this utility model provides the separate isolation of oil pocket of a kind of master cylinder and auxiliary cylinder, and adopt selector valve to be controlled in the time of to retreat the concrete piston initiatively to inject hydraulic oil and promote spacing piston and retreat to auxiliary cylinder, master cylinder does not exist hydraulic oil to gang up when retreating, thereby guarantee that the concrete piston moves back exactly in water tank, to the replacing of concrete piston or maintenance easily, concrete pumping structure easily and efficiently.
A kind of pump structure that is easy to change the concrete piston comprises the conveying cylinder, water tank, master cylinder and the auxiliary cylinder that connect in regular turn; The concrete piston is installed in this conveying cylinder; This master cylinder comprises cylinder body, be installed in that main piston in this master cylinder cylinder body and its rear end connect the front end that is installed in this main piston and its front end connects the main piston rod of the rear end that is installed in this concrete piston; The rear end of this master cylinder is provided with buffer loop; This auxiliary cylinder comprises cylinder body, be installed in that spacing piston in this auxiliary cylinder cylinder body and its rear end connect the front end that is installed in this spacing piston and its front end is inserted the auxiliary piston rod of stretching in this master cylinder; Thereby forming sealing between the chamber wall of this auxiliary piston rod and this auxiliary cylinder cylinder body front end or between the chamber wall of this master cylinder rear end of the cylinder block isolates this master cylinder cylinder body and this auxiliary cylinder cylinder body and does not communicate; This pump structure also comprises a selector valve, ante-chamber and the back cavity of controlling this auxiliary cylinder are communicated with fuel tank and pressure oil-source respectively or the connection that is inverted, be equiped with stop valve on the buffer loop of described master cylinder, under normal pumping, open, when retreating the concrete piston, close.
The described pump structure that is easy to change the concrete piston, wherein, the front end of described auxiliary cylinder cylinder body extends internally and is provided with a boss that is complementary with this auxiliary piston rod, this master cylinder cylinder body and this auxiliary cylinder cylinder body are isolated does not communicate thereby be equiped with the Sealing that is complementary with this auxiliary piston rod on the inwall of this boss.
The described pump structure that is easy to change the concrete piston, wherein, described Sealing adopts axle to enclose with T type Te Kangge.
The described pump structure that is easy to change the concrete piston, wherein, described stop valve is threshold switch independently.
The described pump structure that is easy to change the concrete piston, wherein, described stop valve and this selector valve are combined as a whole.
The described pump structure that is easy to change the concrete piston, wherein, described selector valve inside comprises two groups of branch roads: one group of branch road that is followed successively by disconnected branches and two cross arrangements, another group is the branch road of three not cross arrangements; Outside one end of this selector valve is aligned in sequence with one group of pipeline respectively: be communicated with the pipeline of this master cylinder ante-chamber, be communicated with the pipeline of this fuel tank, be communicated with the pipeline of this pressure oil-source; The other end of the outside of this selector valve also is aligned in sequence with another group pipeline respectively accordingly: be communicated with the pipeline of this master cylinder back cavity, be communicated with the pipeline of this auxiliary cylinder ante-chamber, be communicated with the pipeline of this auxiliary cylinder back cavity; The branch road of the disconnected branches of this selector valve, two cross arrangements forms this selector valve first working position by the above-mentioned two groups of pipelines that are communicated with its outside that put in order respectively; The branch road of three not cross arrangements of this selector valve forms second working position of this selector valve respectively by two groups of pipelines of above-mentioned its outside of connection that puts in order.
The described pump structure that is easy to change the concrete piston wherein, is equiped with the hydraulic oil flow that makes the pressure oil-source place can not be back to one-way valve from pressure oil-source to pump structure between described pressure oil-source and this selector valve.
The pump structure that is easy to change the concrete piston of the present utility model had both been saved middle brace rod; The separate isolation of oil pocket of master cylinder and auxiliary cylinder simultaneously; And adopt selector valve to be controlled in the time of to retreat the concrete piston initiatively to inject hydraulic oil and promote spacing piston and retreat to auxiliary cylinder; Master cylinder does not exist hydraulic oil to gang up when retreating; So when needs are changed or keep in repair the concrete piston, the concrete piston can be moved back exactly in water tank, replacing or maintenance to the concrete piston are easy, and it is convenient, fast, system works is reliable, the situation of reach again can not occur moving back after not returning or returning, overcome the deficiency that exists in the structure of pumping system of easy replacing concrete piston of the prior art fully.
Description of drawings
Below in conjunction with accompanying drawing,, will make the technical solution of the utility model and other beneficial effect apparent by detailed description to preferred embodiment of the present utility model.
In the accompanying drawing,
Fig. 1 is the generalized section of the normal pumping working state of available coagulation soil pump structure, and the piston of concrete shown in the figure is arranged in carries cylinder;
Fig. 2 is the generalized section of the replacing concrete piston mode of available coagulation soil pump structure, and the piston of concrete shown in the figure retreats in the water tank;
Fig. 3 is the generalized section of the normal pumping working state of concrete pumping structure of the present utility model, and the piston of concrete shown in the figure is arranged in carries cylinder;
Fig. 4 is the generalized section of the replacing concrete piston mode of concrete pumping structure of the present utility model, and the piston of concrete shown in the figure retreats in the water tank.
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined purpose is taked, see also following about detailed description of the present utility model and accompanying drawing, believe the purpose of this utility model, feature and characteristics, should obtain thus going deep into and concrete understanding, yet drawings and embodiments only provide reference and explanation usefulness, are not to be used for the utility model is limited.
As shown in Figure 3 and Figure 4, concrete pumping structure of the present utility model comprises conveying cylinder 1, water tank 3, master cylinder 4 and the auxiliary cylinder 5 that connects in regular turn; Concrete piston 2 is installed in to be carried in the cylinder 1; Water tank 3 connects the rear end that is installed in conveying cylinder 1; Master cylinder 4 connects the rear end that is installed in water tank 3; Auxiliary cylinder 5 connects the rear end that is contained in master cylinder 4.
The rear end of master cylinder 4 is provided with buffer loop 45, move to certain position behind the main piston 43 after, the ante-chamber of master cylinder cylinder body 41 411 is ganged up by buffer loop 45 with back cavity 412.
Pump structure of the present utility model also comprises a special selector valve 6, be control auxiliary cylinder 5 ante-chamber 511 and back cavity 512 respectively with fuel tank 7 and the one-way valve 8 that is connected the pressure oil-source connection or the connection that when retreating the concrete piston, is inverted when the normal pumping, and the break-make of the buffering oil circuit 45 of control master cylinder 4, one-way valve 8 guarantees that the hydraulic oil flow at pressure oil-source place can not be back to pressure oil-source to pump structure.
The control mode of communicating of selector valve 6 is:
When normal pumping is worked, the ante-chamber 511 of auxiliary cylinder 5 is communicated with fuel tank 7, back cavity 512 is communicated with the one-way valve 8 that is connected pressure oil-source, the buffer loop 45 of master cylinder 4 is communicated with, as shown in Figure 3, at this moment, spacing piston 53 be pushed and spacing at auxiliary cylinder cylinder body 51 foremost, because the locking of one-way valve 8, spacing piston 53 and auxiliary piston rod 44 can not retreat, running into auxiliary piston rod 44 when main piston 43 will be blocked by auxiliary piston rod 44, the limit position that restriction main piston 43 moves backward, that is limited the limit position that concrete piston 2 moves backward, concrete piston 2 is remained at work carry in the cylinder 1, the buffering oil circuit 45 of master cylinder 4 is in on-state by selector valve 6, and master cylinder 4 can normally cushion;
When needs were changed or clean concrete piston 2, the ante-chamber 511 of auxiliary cylinder 5 was communicated with the one-way valve that is connected pressure oil-source 8, and back cavity 512 is communicated with fuel tank 7, and the buffer loop 45 of master cylinder 4 disconnects, as shown in Figure 4; The hydraulic oil of pressure oil-source injects the ante-chamber 511 of auxiliary cylinder 5, promotes to move behind the spacing piston 53, removes spacing piston 53 and the spacing state of auxiliary piston rod 44 lockings, simultaneously main piston rod 42 and main piston 43 is produced an attraction force that shrinks back; And the buffer loop 45 of master cylinder 4 disconnects, crawl operation main piston rod 42 shrinks back, and the ante-chamber 411 and the back cavity 412 of master cylinder 4 do not communicate, and have reduced the resistance that main piston 43 retreats, also eliminate the power that main piston 43 is pushed away forward of shutting down operation moment generation, fallen back on the end easily; Sealing 54 is isolated the ante-chamber 511 of the back cavity 412 of master cylinder and auxiliary cylinder and is not communicated, and also makes hydraulic oil can not influence the main piston 43 of master cylinder 4 when injecting the ante-chamber 511 of auxiliary cylinder 5; Thereby, guaranteed that concrete piston 2 can be driven to retreat to fully in the water tank 3, the phenomenon of reach again after can not occurring moving back to return or returning, the case lid 31 of fetching boiling water can be changed easily, keeps in repair or clean.
The design of the selector valve 6 among Fig. 3 and Fig. 4 is as follows, and selector valve 6 inside comprise two groups of (six) branch roads that are arranged in order: one group is the branch road of disconnected branches and two cross arrangements, and another group is the branch road of three not cross arrangements.Outside one end of selector valve 6 is aligned in sequence with one group of (three) pipeline respectively: be communicated with the pipeline of master cylinder ante-chamber 411, be communicated with the pipeline of fuel tank 7, be communicated with the pipeline of the one-way valve 8 that is connected with pressure oil-source; The other end of the outside of selector valve 6 also is aligned in sequence with another group (three) pipeline respectively: be communicated with the pipeline of master cylinder back cavity 412, be communicated with the pipeline of auxiliary cylinder ante-chamber 511, be communicated with the pipeline of auxiliary cylinder back cavity 512.In the normal pumping working state shown in Figure 3, the branch road of the disconnected branches of selector valve 6, two cross arrangements is communicated with two groups of pipelines of its outside respectively by above-mentioned putting in order, and forms first working position of selector valve 6; In the repair and replacement state shown in Figure 4, the branch road of three not cross arrangements of selector valve 6 is communicated with two groups of pipelines of its outside respectively by above-mentioned putting in order, and forms second working position of selector valve 6.As long as selector valve 6 structural designs own meet above-mentioned situation, be not restricted.
Also can be equiped with independently stop valve on the buffer loop 45 of master cylinder 4 and, under normal pumping, opening, when retreating the concrete piston, close not by selector valve control.
As known by the technical knowledge, the utility model can be realized by other the embodiment that does not break away from its spirit or essential feature.Therefore, above-mentioned disclosed embodiment with regard to each side, all just illustrates, and is not only.All in the utility model scope or the change that is being equal in the scope of the present utility model all be included in the utility model.
Claims (7)
1, a kind of pump structure that is easy to change the concrete piston comprises the conveying cylinder, water tank, master cylinder and the auxiliary cylinder that connect in regular turn; The concrete piston is installed in this conveying cylinder; This master cylinder comprises cylinder body, be installed in that main piston in this master cylinder cylinder body and its rear end connect the front end that is installed in this main piston and its front end connects the main piston rod of the rear end that is installed in this concrete piston; The rear end of this master cylinder is provided with buffer loop; This auxiliary cylinder comprises cylinder body, be installed in that spacing piston in this auxiliary cylinder cylinder body and its rear end connect the front end that is installed in this spacing piston and its front end is inserted the auxiliary piston rod of stretching in this master cylinder; It is characterized in that: the oil pocket of this master cylinder cylinder body and this auxiliary cylinder cylinder body is isolated do not communicate thereby form sealing between the chamber wall of this auxiliary piston rod and this auxiliary cylinder cylinder body front end or between the chamber wall of this master cylinder rear end of the cylinder block; This pump structure also comprises a selector valve, and ante-chamber and the back cavity of controlling this auxiliary cylinder are communicated with fuel tank and pressure oil-source respectively or the connection that is inverted, and are equiped with stop valve on the buffer loop of master cylinder, opens under normal pumping, closes when retreating the concrete piston.
2, the pump structure that is easy to change the concrete piston according to claim 1, it is characterized in that, the front end of described auxiliary cylinder cylinder body extends internally and is provided with a boss that is complementary with this auxiliary piston rod, the oil pocket of this master cylinder cylinder body and this auxiliary cylinder cylinder body is isolated does not communicate thereby be equiped with the Sealing that is complementary with this auxiliary piston rod on the inwall of this boss.
3, the pump structure that is easy to change the concrete piston according to claim 2 is characterized in that, described Sealing adopts axle to enclose with T type Te Kangge.
4, the pump structure that is easy to change the concrete piston according to claim 1 is characterized in that, described stop valve is threshold switch independently.
5, the pump structure that is easy to change the concrete piston according to claim 1 is characterized in that, described stop valve and this selector valve are combined as a whole.
6, according to claim 4 or the 5 described pump structure that are easy to change the concrete piston, it is characterized in that, described selector valve inside comprises two groups of branch roads: one group of branch road that is followed successively by disconnected branches and two cross arrangements, and another group is the branch road of three not cross arrangements; Outside one end of this selector valve is aligned in sequence with one group of pipeline respectively: be communicated with the pipeline of this master cylinder ante-chamber, be communicated with the pipeline of this fuel tank, be communicated with the pipeline of this pressure oil-source; The other end of the outside of this selector valve also is aligned in sequence with another group pipeline respectively accordingly: be communicated with the pipeline of this master cylinder back cavity, be communicated with the pipeline of this auxiliary cylinder ante-chamber, be communicated with the pipeline of this auxiliary cylinder back cavity; The branch road of the disconnected branches of this selector valve, two cross arrangements forms this selector valve first working position by the above-mentioned two groups of pipelines that are communicated with its outside that put in order respectively; The branch road of three not cross arrangements of this selector valve forms second working position of this selector valve respectively by two groups of pipelines of above-mentioned its outside of connection that puts in order.
7, the pump structure that is easy to change the concrete piston according to claim 1 is characterized in that, is equiped with the hydraulic oil flow that makes the pressure oil-source place can not be back to one-way valve from pressure oil-source to pump structure between described pressure oil-source and this selector valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520121342 CN2881144Y (en) | 2005-12-26 | 2005-12-26 | Pumping structure capable of easy changing concrete piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520121342 CN2881144Y (en) | 2005-12-26 | 2005-12-26 | Pumping structure capable of easy changing concrete piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2881144Y true CN2881144Y (en) | 2007-03-21 |
Family
ID=37880983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520121342 Expired - Fee Related CN2881144Y (en) | 2005-12-26 | 2005-12-26 | Pumping structure capable of easy changing concrete piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2881144Y (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776053A (en) * | 2010-03-16 | 2010-07-14 | 三一重工股份有限公司 | Concrete pumping structure |
| CN101793246A (en) * | 2010-03-16 | 2010-08-04 | 三一重工股份有限公司 | Concrete pumping structure and control method of concrete pumping structure |
| WO2012019483A1 (en) * | 2010-08-11 | 2012-02-16 | 湖南三一智能控制设备有限公司 | Special tool of concrete piston of pumping device |
| CN102374150A (en) * | 2010-08-12 | 2012-03-14 | 中集车辆（山东）有限公司 | Pumping mechanism capable of replacing concrete piston |
| CN102410198A (en) * | 2011-09-15 | 2012-04-11 | 三一重工股份有限公司 | Concrete pumping device and pumping mechanism thereof |
| CN102410168A (en) * | 2011-09-20 | 2012-04-11 | 三一重工股份有限公司 | Pumping mechanism and concrete pumping device |
| CN102588241A (en) * | 2011-10-14 | 2012-07-18 | 三一重工股份有限公司 | Concrete pump and pumping mechanism thereof |
| CN102678540A (en) * | 2012-05-30 | 2012-09-19 | 三一重工股份有限公司 | Hydraulic oil cylinder, hydraulic oil circuit, material pumping system, and engineering machinery |
| CN102927078A (en) * | 2012-10-31 | 2013-02-13 | 三一重工股份有限公司 | Hydraulic oil cylinder and pumping mechanism and engineering machinery comprising same |
| CN102966528A (en) * | 2012-10-31 | 2013-03-13 | 山推楚天工程机械有限公司 | Novel piston limiting mechanism of conveying cylinder |
| CN105221410A (en) * | 2015-09-24 | 2016-01-06 | 铁建重工新疆有限公司 | A kind of concrete pump truck and pumping mechanism thereof |
| CN105508329A (en) * | 2014-09-23 | 2016-04-20 | 中联重科股份有限公司 | Pumping hydraulic control system and concrete pumping equipment |
| CN106351815A (en) * | 2016-10-21 | 2017-01-25 | 北汽福田汽车股份有限公司 | Pump car and telescopic pumping system thereof |
-
2005
- 2005-12-26 CN CN 200520121342 patent/CN2881144Y/en not_active Expired - Fee Related
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776053B (en) * | 2010-03-16 | 2012-09-05 | 三一重工股份有限公司 | Concrete pumping structure |
| EP2549104A4 (en) * | 2010-03-16 | 2018-02-07 | Hunan Sany Intelligent Control Equipment Co., Ltd | Concrete pumping structure and control method thereof |
| WO2011113356A1 (en) * | 2010-03-16 | 2011-09-22 | 湖南三一智能控制设备有限公司 | Concrete pumping structure and control method thereof |
| WO2011113241A1 (en) * | 2010-03-16 | 2011-09-22 | 湖南三一智能控制设备有限公司 | Concrete pumping structure |
| CN101776053A (en) * | 2010-03-16 | 2010-07-14 | 三一重工股份有限公司 | Concrete pumping structure |
| CN101793246B (en) * | 2010-03-16 | 2013-08-28 | 三一汽车制造有限公司 | Concrete pumping structure and control method of concrete pumping structure |
| CN101793246A (en) * | 2010-03-16 | 2010-08-04 | 三一重工股份有限公司 | Concrete pumping structure and control method of concrete pumping structure |
| US20130004341A1 (en) * | 2010-03-16 | 2013-01-03 | Sany Heavy Industry Co., Ltd. | Concrete pumping structure and control method thereof |
| US9322398B2 (en) * | 2010-03-16 | 2016-04-26 | Hunan Sany Intelligent Control Equipment Co., Ltd. | Concrete pumping structure and control method thereof |
| JP2013522522A (en) * | 2010-03-16 | 2013-06-13 | コナン サンイー インテリジェント コントロール イクイップメント カンパニー リミテッド | Concrete pumping structure and control method of concrete pumping structure |
| WO2012019483A1 (en) * | 2010-08-11 | 2012-02-16 | 湖南三一智能控制设备有限公司 | Special tool of concrete piston of pumping device |
| CN102374150A (en) * | 2010-08-12 | 2012-03-14 | 中集车辆（山东）有限公司 | Pumping mechanism capable of replacing concrete piston |
| CN102410198A (en) * | 2011-09-15 | 2012-04-11 | 三一重工股份有限公司 | Concrete pumping device and pumping mechanism thereof |
| CN102410198B (en) * | 2011-09-15 | 2015-01-14 | 三一汽车制造有限公司 | Concrete pumping device and pumping mechanism thereof |
| CN102410168A (en) * | 2011-09-20 | 2012-04-11 | 三一重工股份有限公司 | Pumping mechanism and concrete pumping device |
| CN102410168B (en) * | 2011-09-20 | 2015-02-25 | 三一重工股份有限公司 | Pumping mechanism and concrete pumping device |
| CN102588241B (en) * | 2011-10-14 | 2015-01-14 | 三一汽车制造有限公司 | Concrete pump and pumping mechanism thereof |
| CN102588241A (en) * | 2011-10-14 | 2012-07-18 | 三一重工股份有限公司 | Concrete pump and pumping mechanism thereof |
| CN102678540B (en) * | 2012-05-30 | 2015-04-01 | 三一重工股份有限公司 | Hydraulic oil cylinder, hydraulic oil circuit, material pumping system, and engineering machinery |
| CN102678540A (en) * | 2012-05-30 | 2012-09-19 | 三一重工股份有限公司 | Hydraulic oil cylinder, hydraulic oil circuit, material pumping system, and engineering machinery |
| CN102927078A (en) * | 2012-10-31 | 2013-02-13 | 三一重工股份有限公司 | Hydraulic oil cylinder and pumping mechanism and engineering machinery comprising same |
| CN102966528B (en) * | 2012-10-31 | 2015-09-30 | 山推楚天工程机械有限公司 | A kind of novel piston of conveying cylinder position-limit mechanism |
| CN102966528A (en) * | 2012-10-31 | 2013-03-13 | 山推楚天工程机械有限公司 | Novel piston limiting mechanism of conveying cylinder |
| CN105508329B (en) * | 2014-09-23 | 2017-08-25 | 中联重科股份有限公司 | Pumping hydraulic control system and concrete pumping equipment |
| CN105508329A (en) * | 2014-09-23 | 2016-04-20 | 中联重科股份有限公司 | Pumping hydraulic control system and concrete pumping equipment |
| CN105221410A (en) * | 2015-09-24 | 2016-01-06 | 铁建重工新疆有限公司 | A kind of concrete pump truck and pumping mechanism thereof |
| CN105221410B (en) * | 2015-09-24 | 2018-08-28 | 铁建重工新疆有限公司 | A kind of concrete pump truck and its pumping mechanism |
| CN106351815A (en) * | 2016-10-21 | 2017-01-25 | 北汽福田汽车股份有限公司 | Pump car and telescopic pumping system thereof |
| CN106351815B (en) * | 2016-10-21 | 2019-06-11 | 北汽福田汽车股份有限公司 | A kind of pump truck and its telescopic pumping system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2881144Y (en) | Pumping structure capable of easy changing concrete piston | |
| CN101782095B (en) | Differential energy recovery device and method for seawater desalination system | |
| CN101776053B (en) | Concrete pumping structure | |
| CN104196785B (en) | A kind of closed type energy-saving type shield propulsion hydraulic system using multiplex pump to drive | |
| WO2011113356A1 (en) | Concrete pumping structure and control method thereof | |
| CN101705928A (en) | Concrete transfer pump | |
| CN102383769A (en) | Power compensation type hydraulic pressurizing water injection system | |
| CN201486790U (en) | Pumping mechanism capable of changing strokes and pump vehicle provided therewith | |
| CN201604624U (en) | Tow type concrete pump and hydraulic control system of landing legs thereof | |
| CN2526541Y (en) | Pumping mechanism easy to replace concrete piston | |
| CN202100559U (en) | Potential energy recovering hydraulic system | |
| CN1757915A (en) | Ground dual-pressure hydraulic filling booster pump | |
| CN201785788U (en) | Hydraulic quick connector for excavator | |
| CN209838804U (en) | Hydraulic system of drilling machine | |
| CN102296664B (en) | Hydraulic driving device of excavator | |
| CN110486027B (en) | Shield tunneling machine hydraulic propulsion system adopting redundancy control | |
| CN207080447U (en) | Synchronous hydraulic corrects system | |
| CN202768380U (en) | Pumping distribution mechanism, pumping device and concrete pump | |
| CN202531940U (en) | Engine overflow valve | |
| CN201547054U (en) | Hydraulic cylinder capable of removing oil stains | |
| CN211778291U (en) | Multi-way valve of excavator | |
| CN202789370U (en) | Flexible pumping mechanism with quickly replaceable piston | |
| CN102678540A (en) | Hydraulic oil cylinder, hydraulic oil circuit, material pumping system, and engineering machinery | |
| CN202280591U (en) | Pumping mechanism and concrete pumping equipment | |
| CN108488127B (en) | Two-position reversing valve group for actuating mechanism of full-hydraulic tunnel drilling machine |
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: 20070321 Termination date: 20141226 |
|
| EXPY | Termination of patent right or utility model |