CN201568249U - Small-sized concrete conveying pump - Google Patents
Small-sized concrete conveying pump Download PDFInfo
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- CN201568249U CN201568249U CN2009200878487U CN200920087848U CN201568249U CN 201568249 U CN201568249 U CN 201568249U CN 2009200878487 U CN2009200878487 U CN 2009200878487U CN 200920087848 U CN200920087848 U CN 200920087848U CN 201568249 U CN201568249 U CN 201568249U
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Abstract
The utility model relates to concrete conveying equipment for the construction engineering, particularly provides a small-sized concrete conveying pump which has the characteristics of small volume, narrow width of a machine body, low failure rate, good stability and convenience for concrete pumping construction in the narrow space, and is provided with a hydraumatic single-row sluice valve. A lubrication system, a cooling system, an electric cabinet, a machine cover, a pumping system, a hydraumatic system and an electrical-equipment controlling PLC system are arranged on a rack, wherein the pumping system comprises a hopper at the front end of the rack, a sluice valve of a single-cavity body, a conveying cylinder, a washing chamber and a hydraumatic oil cylinder, and the sluice valve of the single-cavity body, the conveying cylinder, the washing chamber and the hydraumatic oil cylinder are connected in sequence; an oil cylinder of the sluice valve is integrally arranged at the upper part of the sluice valve of the single-cavity body, and an outlet pipe is arranged at the lower front end thereof; the hydraumatic oil cylinder is a single-row hydraumatic oil cylinder; an assembly of a piston connecting rod of a conveying cylinder is connected with the end part of a piston rod of the hydraumatic oil cylinder; and the pumping system comprises a main oil pump and a hydraumatic controlling valve bank and is connected with the electric cabinet through the electrical-equipment controlling PLC system. The small-sized concrete conveying pump has the characteristics of small volume, low failure rate, good stability and the like.
Description
Technical field
The utility model relates to a kind of construction project concrete conveying equipment, particularly a kind of small-size concrete transfer pump.
Background technique
At present, in the prior art, concrete pump mostly is the gate valve concrete pump, is hydraulic pressure biserial cylinder form, the gate valve housing is a dual chamber structural type, belong to big-and-middle-sized equipment, volume is big, is difficult to enter the narrow job site of working space, particularly in long and narrow culvert engineering, above-mentioned concrete pump width of the prior art is unfavorable for construction operation especially, and transportation simultaneously is extremely inconvenience also, and the flexibility of execute-in-place also is restricted.Therefore, how on the basis of existing concrete transfer pump, reduce the volume of concrete pump, particularly reduce the width of its concrete pump, to be applicable to tunnel and narrow space pumpdown, how to carry out concrete pumpdown at narrow space more easily, be the technical problem that those skilled in the art presses for solution at present.
Summary of the invention
The purpose of this utility model provides that a kind of volume is little, fuselage width is narrow, and the rate of fault of being convenient to carry out at narrow space pumping concrete construction is low, good stability, small-size concrete transfer pump with hydraulic pressure single-column type gate valve characteristics.
The utility model is achieved through the following technical solutions:
A kind of small-size concrete transfer pump of the present utility model, comprise: on frame, be provided with lubrication system, cooling system, electric control box, its outer cup hood is arranged, on frame, also be provided with pumping system, hydraulic system and electrical equipment control PLC system, wherein pumping system is included in the hopper that the frame front end is provided with, successively single cavity gate valve of Lian Jieing, carry cylinder, washing chamber, hydraulic jack, described single cavity gate valve top has been wholely set the gate valve oil cylinder, the bottom front end is provided with outer pipe, and described hydraulic jack is the single-column type hydraulic jack; Carry the piston rod part in the cylinder to link to each other with the hydraulic cylinder piston rod end, described pumps hydraulic system is included as the hydraulic control valve group of the main oil pump and the control pumping system acting of pumping system action fuel feeding, and described pumps hydraulic system connects with electric control box by electrical equipment control PLC system.Described pumping system action is driven by hydraulic system.
A kind of small-size concrete transfer pump described in the utility model, wherein: the pumps hydraulic system is provided with the hydraulic control valve group, and two electro-hydraulic reversing valves and an electromagnetic relief valve are installed on hydraulic control valve group valve piece.Electro-hydraulic reversing valve is used to control the action of main hydraulic jack by oil circuit and hydraulic jack UNICOM, and another electro-hydraulic reversing valve is used for the action of control gate plate valve oil cylinder by oil circuit and gate valve oil cylinder UNICOM.Electromagnetic relief valve is used to limit the maximum pressure of hydraulic system.
A kind of small-size concrete transfer pump described in the utility model, wherein: be respectively arranged with two sensors of gathering signal in described hydraulic jack corresponding position, this sensor acquisition be the signal of this hydraulic jack inner carrier when arriving two stroke terminals, promptly when any one terminal of two stroke terminals of piston arrives of described hydraulic jack, the sensor that triggers the hydraulic jack relevant position sends signal, and sensor acquisition is sent to coupled electrical equipment control PLC system to the piston arrives terminal signaling; Be respectively arranged with two sensors of gathering signals in described gate valve oil cylinder corresponding position, this sensor acquisition be the signal that this gate valve oil cylinder inner carrier arrives two stroke terminals.When being any one stroke terminal of piston arrives of described gate valve oil cylinder, trigger the sensor of gate valve oil cylinder relevant position, sensor acquisition is sent to coupled electrical equipment control PLC system to this terminal signaling of piston arrives; When wherein the hydraulic jack inner carrier all stretched out state, obtaining of the commutation signal of sensor was to rely on an electro-hydraulic control valve to realize.
A kind of small-size concrete transfer pump described in the utility model, wherein: described hydraulic jack inner carrier is on the position of all stretching out, the obtained commutation signal of described sensor is a commutation signal that electro-hydraulic control valve sends, this electro-hydraulic control valve is to be penetrated with a movably valve rod on its valve body, the valve rod middle part is provided with shoulder valve pocket is divided into two cavitys, be with the limit baffle ring of spring and restraining spring stroke on the valve rod of one of them cavity, this cavity is called the spring chamber, between spring and shoulder, be provided with pad, be provided with described sensor at the corresponding position, valve rod termination that spring chamber one end is arranged, in described hydraulic jack, hydraulic jack is divided into rod chamber and rodless cavity by piston, on the cylinder body of position, described hydraulic jack rod chamber termination, two hydraulic fluid ports are arranged successively vertically, two hydraulic fluid ports opening with the two ends of described electrichydraulic control valve body one side are communicated with, wherein the hydraulic fluid port near the termination is connected with the hydraulic fluid port that spring chamber one end is arranged, and another hydraulic fluid port is connected with the hydraulic fluid port of no spring chamber one end.Utilize the pressure difference between hydraulic jack rod chamber and rodless cavity to promote valve rod proximity detector contact, make sensor send electrical signal.When the hydraulic jack rod chamber is identical with pressure between rodless cavity, rely on the elastic force of the spring in the described cylindricality electro-hydraulic reversing valve to make valve rod leave the sensor playback, the obtained commutation signal of this sensor is the commutation signal of hydraulic jack inner carrier when all stretching out state.Obtain hydraulic pressure signal and make valve rod snap action triggering sensor send electrical signal, thereby drive the electro-hydraulic reversing valve commutation of hydraulic control valve group.The electric signal control that the sequence of movement of described electro-hydraulic reversing valve is sent by 4 sensors, controlled hydraulic system is according to the Automatic Program working in reciprocating mode of setting.Electric control box is provided with emergency stop push button and RCI and remote control operation device.
A kind of small-size concrete transfer pump described in the utility model, wherein: adopt a permanent power and variable oil pump with manual stroking mechanism by motor or diesel-driven main oil pump, this oil pump by the permanent power curve variable, can also change the output quantity of concrete pump except that automatically by regulating manual stroking mechanism on demand.
A kind of small-size concrete transfer pump described in the utility model, wherein: the whole angle with the conveying cylinder of described single cavity gate valve and gate valve oil cylinder is 45 °-55 °.
A kind of small-size concrete transfer pump described in the utility model, wherein: described single cavity gate valve and gate valve oil cylinder are whole to be preferably 50 ° with the angle of carrying cylinder.
A kind of small-size concrete transfer pump described in the utility model, wherein: under described frame, four jiaos are provided with four lifting legs, the neutral position is provided with two wheels that a wheel shaft connects, the lifting bar of a manual lead screw sliding sleeve is set at the described frame the other end, by lifting bar, four leg liftings are to the ground supports fixed frame.
A kind of small-size concrete transfer pump described in the utility model, wherein: described hood is a rack-mounted integrally closed hood, on the hood of both sides, have gate, gate can adopt manual strut or pneumatic strut to be supported in the complete machine both sides, at the scene during narrow space, gate also can on turn over and be stacked and placed on the hood top.
The utlity model has following remarkable advantage:
The utlity model has that spatial volume is little, rate of fault is low, the characteristics of good stability.The pumps hydraulic system is simple, has the characteristics of less trouble, and control operation is easy, has reduced a hydraulic jack and connecting tube thereof, has reduced volume, has reduced cost.
Description of drawings:
Fig. 1: the overall structure schematic representation that is a kind of small-size concrete transfer pump embodiment of the present utility model;
Fig. 2: be a kind of small-size concrete transfer pump embodiment electrichydraulic control valve arrangement of the present utility model and working principle schematic representation.
Wherein: 1: outer pipe; 2: upper shell 3: hopper; 4: motor; 5: lubrication system; 6: the gate valve oil cylinder; 7: wheel; 8: gate; 9: main oil pump; 10: electric control box; 11: hood; 12: cooling system; 13: frame; 14: lifting bar; 15: sensor 16: electro-hydraulic control valve 17: hydraulic jack; 18: electro-hydraulic reversing valve; 19: the washing chamber; 20: piston; 21: electromagnetic relief valve; 22: piston rod part 23: carry cylinder 24: leg; 25: single cavity gate valve; 26: lower shell body; 27: piston rod; 28: rod chamber; 29: rodless cavity; 30: spring; 31: limit baffle ring; 32: valve body; 33: valve rod; 34: the spring chamber is arranged; 35: pad; 36: shoulder; 37: no spring chamber; 38 no spring chamber hydraulic fluid ports; 39: spring chamber hydraulic fluid port is arranged; 40: the rod chamber hydraulic fluid port; 41: the rodless cavity hydraulic fluid port;
Embodiment:
Below in conjunction with the drawings and specific embodiments the utility model is described further, but not as to qualification of the present utility model.
As shown in Figure 1, the embodiment of a kind of small-size concrete transfer pump of the utility model, in Fig. 1, on frame 13, be provided with lubrication system 5, cooling system 12, electric control box 10, its outer cup has hood 11, on frame 13, also be provided with pumping system, pumps hydraulic system and electrical equipment control PLC system, pumping system is included in the hopper 3 that frame 13 front ends are provided with, single cavity gate valve 25 of Lian Jieing successively, carry cylinder 23, washing chamber 19, hydraulic jack 17, described single cavity gate valve 25 tops have been wholely set gate valve oil cylinder 6, the bottom front end is provided with outer pipe 1, and described hydraulic jack 17 is the single-column type hydraulic jack; Carry the piston rod part 22 in the cylinder 23 to link to each other with hydraulic cylinder piston rod 27 ends.Single cavity gate valve 25 is made of upper shell 2, lower shell body 26, guiding valve board component (not shown).The top that hopper 3 is positioned at outer pipe 1 links to each other with upper shell 2, carries cylinder 23, hydraulic jack 17 to be connected with 19 two ends, washing chamber respectively, carries cylinder 23 to be connected with the lower shell body 26 of single cavity flashboard 25.Piston rod part 22 links to each other with piston rod 27 ends of hydraulic jack 17.Among Fig. 1, described pumps hydraulic system is included as the hydraulic control valve group of the main oil pump 9 and the control pumping system acting of pumping system action fuel feeding, and described pumps hydraulic system connects with electric control box 10 by electrical equipment control PLC system.Described pumping system action is by the pumps hydraulic system drive.
In Fig. 1, described hydraulic control valve group is to be provided with two electro-hydraulic reversing valves 18 and the hydraulic control valve valve block assembly that electromagnetic relief valve 21 constitutes, one of them electro-hydraulic reversing valve 18 is by oil circuit and hydraulic jack 17 UNICOMs, and another electro-hydraulic reversing valve 18 is by oil circuit and gate valve oil cylinder 6 UNICOMs.
Be provided with two sensors 15 (another is not shown) of gathering signal in described hydraulic jack 17 corresponding positions, this sensor is to gather the sensor that these hydraulic jack 17 inner piston rods 27 arrive the commutation signal of two stroke terminals, be respectively arranged with two sensor (not shown)s of gathering signal in described gate valve oil cylinder 6 corresponding positions, this sensor is to gather the sensor that these gate valve oil cylinder 6 inner carriers arrive the commutation signal of two stroke terminals, described four sensors are connected with electrical equipment control PLC system, for four sensors, its position is inessential, importantly can collect the commutation signal of end-of-travel position.
As shown in Figure 2, described hydraulic jack 17 inner piston rods 27 are on the position of all stretching out, described sensor 15 obtained commutation signal are the commutation signal that electro-hydraulic control valve 16 sends, this electro-hydraulic control valve 16 is to be penetrated with a movably valve rod 33 on its valve body 32, valve rod 33 middle parts are provided with shoulder 36 valve pocket are divided into two cavitys, be with the limit baffle ring 31 of spring 30 and restraining spring stroke on the valve rod 33 of one of them cavity, this cavity is called spring chamber 34, between spring 30 and shoulder 36, be provided with pad 35, be provided with described sensor 15 at the corresponding position, valve rod 33 terminations that spring chamber 34 1 ends are arranged, in described hydraulic jack 17, by piston 20 hydraulic jack 17 is divided into rod chamber 28 and rodless cavity 29, on the cylinder body of the position, rod chamber 28 termination of described hydraulic jack 17, two hydraulic fluid ports 40 are arranged successively vertically, 41, two hydraulic fluid ports 38 opening with the two ends of valve body 32 1 sides of described electro-hydraulic control valve 16,39 are communicated with, wherein the hydraulic fluid port 40 near rod chamber 28 terminations is connected with the hydraulic fluid port 39 that spring chamber 34 1 ends are arranged, and another hydraulic fluid port 41 is connected with the hydraulic fluid port 38 of no spring chamber 37 1 ends.Hydraulic jack 17 stretches out in the stroke motion process at piston rod 27, hydraulic fluid port 40 all is in rod chamber with hydraulic fluid port 41 and oil pressure is identical, so the described hydraulic fluid port 38,39 that is attached thereto and that spring chamber 34 is arranged is all identical with the pressure that do not have in the spring chamber 37 is so valve rod 33 keeps motionless.When the piston 20 of hydraulic jack 17 moves near end of travel, hydraulic fluid port 40 cuts off with hydraulic fluid port 41, and hydraulic fluid port 41 pressure are greater than the pressure of hydraulic fluid port 40, be the pressure of the pressure of hydraulic fluid port 38 greater than hydraulic fluid port 39, valve rod 33 under the pressure difference effect to the diagram left to moving, promptly to there being the spring cavity direction to move, near the contact of sensor 15, make sensor 15 send electrical signal, at this moment the displacement distance of its valve rod 33 limits by limit baffle ring 31.When piston 20 motions of hydraulic jack 17 arrive end of travel, hydraulic fluid port 40 all is in rodless cavity with hydraulic fluid port 41 and oil pressure is identical, the pressure that spring chamber 34 is arranged and do not have 37 liang of chambeies, spring chamber that promptly links to each other with hydraulic fluid port 38,39 becomes identical again, and valve rod 33 moves return to the diagram right under the effect of spring 30.
In Fig. 1, the main oil pump 9 of described pumps hydraulic system is by motor 4 or diesel-driven, and main oil pump 9 adopts permanent power and variable plunger-type fuel pump, and described permanent power and variable plunger-type fuel pump is subsidiary manual stroking mechanism.
Described single cavity gate valve 25 and gate valve oil cylinder 6 whole angles with conveying cylinder 23 are: 45 °-55 °, described single cavity gate valve 25 and gate valve oil cylinder 6 integral body are preferably 50 ° with the angle of carrying cylinder 23.The lower shell body 26 that is single cavity gate valve 25 is 50 ° with carrying cylinder 23 junction surfaces and gate valve oil cylinder 6 angles.Upper shell 26 becomes one with outer pipe 1 casting or by being welded and fused.
The described frame 13 of Fig. 1, casing 11 are steel construction piece, comprise that all parts of transporting system all are installed on the frame 13.Frame 13 has four legs that can stretch 24, neutral positions and is provided with two wheels 7 that a wheel shaft connects, and the other end is provided with a lifting bar 14 that has the manual lead screw sliding sleeve.The leg 24 that puts down four scalable liftings respectively by operation lifting bar 14 before the transmission and concrete transmission pump work need be packed up leg 24 by operation lifting bar 14 when towing concrete pump and rely on wheel to advance to the ground supports concrete pump.
The described hood 11 of Fig. 1 is for being installed in an integrally closed hood on the frame 13, have gate 8 in hood 11 both sides, gate 8 can adopt manual strut or pneumatic strut to be supported in the complete machine both sides, at the scene during narrow space, gate 8 also can on turn over and be stacked and placed on hood 11 tops, under the situation of opening the gate operation, do not take the space of fuselage both sides.
The main oil pump 9 of pumps hydraulic system is permanent power and variable oil pump, is driven by motor 4.To hydraulic jack 17 and gate valve oil cylinder 6 fuel feeding, drive the transmission and concrete transmission pump work by the hydraulic control valve group, finish concrete suction and discharging operation.The start and stop of described electrical equipment control PLC system control motor 4 take signal by the work that commutates continuously of electrical equipment control PLC system control pumping system by sensor.Electric control box is provided with emergency stop push button and RCI and remote control operation device.
Working principle:
1, as power source, hydraulic system is the open type oil circuit to concrete pump with motor 4, and pumps hydraulic system main oil pump 9 adopts permanent power and variable plunger pump.
2, concrete suction and discharge: because the utility model adopts the single-row hydraulic piston type oil cylinder 17 of level,, suck concrete when promptly carrying cylinder 23 retractions, extrude concrete when carrying cylinder 23 to advance so concrete pump pumping process is interrupted.
3, the forward pumping is when the piston rod part 22 of transmission and concrete transmission cylinder 23 bounces back, and the material feeding mouth of single cavity gate valve 25 is opened, and the discharge port of outer pipe 1 is closed.Because the impetus of the blade in negative pressure and the hopper 3 is inhaled into the concrete in the hopper 3 and carries cylinder 23; When conveying cylinder 23 piston rod parts 22 of concrete pump were proal, the material feeding mouth of single cavity gate valve 25 was closed, and the discharge port of outer pipe 1 is opened.Concrete enters concrete conveying pipe by single cavity gate valve 25.
4, oppositely the anti-pump state of pumping is by carrying cylinder 23 back suctions to return and returning hopper 3 by single cavity gate valve 25 with the concrete in the concrete conveying pipe just in time and positive pump opposite states.
More than describing is to explanation of the present utility model, is not the qualification to model utility, and the utility model institute restricted portion is referring to claim, and under the situation of spirit of the present utility model, the utility model can be done any type of modification.
Claims (9)
1. small-size concrete transfer pump, comprise: on frame (13), be provided with lubrication system (5), cooling system (12), electric control box (10), its outer cup has hood (11), it is characterized in that: on frame (13), be provided with pumping system, hydraulic system and electrical equipment control PLC system, wherein pumping system is included in the hopper (3) that frame (13) front end is provided with, single cavity gate valve (25) of Lian Jieing successively, carry cylinder (23), washing chamber (19), hydraulic jack (17), described single cavity gate valve (25) top has been wholely set gate valve oil cylinder (6), the bottom front end is provided with outer pipe (1), and described hydraulic jack (17) is the single-column type hydraulic jack; Carry the piston rod part (22) in the cylinder (23) to link to each other with hydraulic jack (17) piston rod (27) end, described pumps hydraulic system is included as the hydraulic control valve group of the main oil pump (9) and the control pumping system acting of pumping system action fuel feeding, and described pumps hydraulic system passes through electrical equipment control PLC system and connects with electric control box (10).
2. small-size concrete transfer pump according to claim 1, it is characterized in that: described hydraulic control valve group is the hydraulic control valve assembly that is provided with two electro-hydraulic reversing valves (18) and an electromagnetic relief valve (21) formation, one of them electro-hydraulic reversing valve (18) is by oil circuit and hydraulic jack (17) UNICOM, and another electro-hydraulic reversing valve (18) is by oil circuit and gate valve oil cylinder (6) UNICOM.
3. small-size concrete transfer pump according to claim 2, it is characterized in that: be provided with two sensors (15) of gathering signal in described hydraulic jack (17) corresponding position, this sensor (15) is to gather the sensor that this hydraulic jack (17) inner carrier (20) arrives the commutation signal of two stroke terminals, be respectively arranged with two sensors of gathering signal in described gate valve oil cylinder (6) corresponding position, this sensor is to gather the sensor that this gate valve oil cylinder (6) inner carrier arrives the commutation signal of two stroke terminals, and described four sensors are connected with electrical equipment control PLC system.
4. small-size concrete transfer pump according to claim 3, it is characterized in that: described hydraulic jack (17) inner carrier (20) is on the position of all stretching out, the obtained commutation signal of described sensor (15) is the commutation signal that an electro-hydraulic control valve (16) sends, this electro-hydraulic control valve (16) is to be penetrated with a movably valve rod (33) on its valve body (32), valve rod (33) middle part is provided with shoulder (36) valve pocket is divided into two cavitys, be with the limit baffle ring (31) of spring (30) and restraining spring stroke on the valve rod of one of them cavity (33), this cavity is called spring chamber (34), between spring (30) and shoulder (36), be provided with pad (35), be provided with described sensor (15) at corresponding position, the valve rod that spring chamber (34) one ends are arranged (33) termination, in described hydraulic jack (17), hydraulic jack (17) is divided into rod chamber (28) and rodless cavity (29) by piston (20), on the cylinder body of described hydraulic jack (17) rod chamber (28) position, termination, two hydraulic fluid ports (40) are arranged successively vertically, (41), two hydraulic fluid ports (38) of opening with the two ends of valve body (32) one sides of described electro-hydraulic control valve (16), (39) be communicated with, wherein rod chamber (28) upward is connected with the hydraulic fluid port that spring chamber (34) one ends are arranged (39) near the hydraulic fluid port (40) of termination, and another hydraulic fluid port of rod chamber (28) (41) is connected with the hydraulic fluid port (38) of no spring chamber (37) one ends.
5. small-size concrete transfer pump according to claim 4 is characterized in that: described pumps hydraulic system's main oil pump (9) adopts permanent power and variable plunger-type fuel pump, and described permanent power and variable plunger-type fuel pump attaches manual stroking mechanism.
6. small-size concrete transfer pump according to claim 5 is characterized in that: the whole angle with conveying cylinder (23) of described single chamber gate valve (25) and gate valve oil cylinder (6) is 45 °-55 °.
7. small-size concrete transfer pump according to claim 6 is characterized in that: the whole angle with conveying cylinder (23) of described single cavity gate valve (25) and gate valve oil cylinder (6) is 50 °.
8. small-size concrete transfer pump according to claim 7, it is characterized in that: under described frame (13), four jiaos are provided with four lifting legs (24), the neutral position is provided with two wheels (7) that a wheel shaft connects, at described frame (13) the other end lifting bar (14) of a manual lead screw sliding sleeve is set, by (14) four legs of lifting bar (24) lifting to ground supports fixed frame (13).
9. small-size concrete transfer pump according to claim 8, it is characterized in that: described hood (11) is a rack-mounted integrally closed hood, on the hood (11) of both sides, have gate (8), described gate (8) adopts manual strut or pneumatic strut to be supported in the complete machine both sides, turns on the gate (8) and is stacked and placed on hood (11) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200878487U CN201568249U (en) | 2009-08-06 | 2009-08-06 | Small-sized concrete conveying pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200878487U CN201568249U (en) | 2009-08-06 | 2009-08-06 | Small-sized concrete conveying pump |
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| Publication Number | Publication Date |
|---|---|
| CN201568249U true CN201568249U (en) | 2010-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200878487U Expired - Fee Related CN201568249U (en) | 2009-08-06 | 2009-08-06 | Small-sized concrete conveying pump |
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| CN (1) | CN201568249U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975158A (en) * | 2010-12-01 | 2011-02-16 | 徐工集团工程机械股份有限公司建设机械分公司 | Concrete pump truck and concrete piston lubricating system thereof |
| CN102410188A (en) * | 2011-09-21 | 2012-04-11 | 长沙中联重工科技发展股份有限公司 | Gate type concrete pump and pumping control system thereof |
| CN102787726A (en) * | 2012-08-08 | 2012-11-21 | 湖南永恒重工科技有限公司 | Concrete conveying pump |
| WO2013040767A1 (en) * | 2011-09-21 | 2013-03-28 | 长沙中联重工科技发展股份有限公司 | Gate-type concrete pump and pumping control system therefor |
| CN105971862A (en) * | 2016-05-24 | 2016-09-28 | 北汽福田汽车股份有限公司 | Pumping system reversing control method and device |
-
2009
- 2009-08-06 CN CN2009200878487U patent/CN201568249U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975158A (en) * | 2010-12-01 | 2011-02-16 | 徐工集团工程机械股份有限公司建设机械分公司 | Concrete pump truck and concrete piston lubricating system thereof |
| CN102410188A (en) * | 2011-09-21 | 2012-04-11 | 长沙中联重工科技发展股份有限公司 | Gate type concrete pump and pumping control system thereof |
| WO2013040767A1 (en) * | 2011-09-21 | 2013-03-28 | 长沙中联重工科技发展股份有限公司 | Gate-type concrete pump and pumping control system therefor |
| CN102787726A (en) * | 2012-08-08 | 2012-11-21 | 湖南永恒重工科技有限公司 | Concrete conveying pump |
| CN105971862A (en) * | 2016-05-24 | 2016-09-28 | 北汽福田汽车股份有限公司 | Pumping system reversing control method and device |
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| DD01 | Delivery of document by public notice |
Addressee: Wang Lihui Document name: Notification to Go Through Formalities of Registration |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 430077, Hongshan Wuhan District, Hubei province Xu East Street, No. 37, Liyuan primary school Co-patentee after: Yu Jun Patentee after: Wang Lihui Address before: 430011 Hubei province Wuhan City Jiang'an District No. 4 South Baibuting wells decoration company hospital of Wuhan Weifu Engineering Machinery Co. Ltd. Co-patentee before: Yu Jun Patentee before: Wang Lihui |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20120806 |