CN103775300A - Pumping device - Google Patents
Pumping device Download PDFInfo
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- CN103775300A CN103775300A CN201410057890.XA CN201410057890A CN103775300A CN 103775300 A CN103775300 A CN 103775300A CN 201410057890 A CN201410057890 A CN 201410057890A CN 103775300 A CN103775300 A CN 103775300A
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- pumping equipment
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- 238000005086 pumping Methods 0.000 title claims abstract description 105
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 210000005069 ears Anatomy 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 239000000725 suspension Substances 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The invention provides pumping equipment, which comprises a rack and a pumping unit arranged on the rack; the pumping unit comprises a hopper and a pumping power unit connected with the hopper, the pumping power unit comprises two concrete cylinders, two oil cylinders for respectively driving the two concrete cylinders, and a water tank for connecting the oil cylinders and the concrete cylinders, the pumping equipment further comprises a hinged connecting rod, the hinged connecting rod is positioned between the two oil cylinders or the two concrete cylinders, the upper end of the hinged connecting rod is hinged with the rack, and the lower end of the hinged connecting rod is hinged with the water tank. According to the pumping equipment, the water tank is suspended on the rack through the hinged connecting rod, the hinged connecting rod is located between the two oil cylinders or the two concrete cylinders, rigid support or over-positioned connection in the prior art is converted into flexible self-adaptive single-point suspension, the size error and assembly error of parts of the pumping unit can be well absorbed, axial stretching deformation of the pumping unit in the pumping process is adapted, and therefore the pumping unit is prevented from deforming, and fixing is more reliable.
Description
Technical field
The present invention relates to the pasty material pumping fields such as concrete, in particular to a kind of pumping equipment.
Background technique
In prior art, pumping unit support fixed structure mainly contains two kinds shown in Fig. 1 and Fig. 2.As shown in Figure 1, the hopper dual-side of pumping unit 1 is connected with subframe 3 by hopper fixing bolt 2, and water tank 4 both sides of pumping unit 1 are fixedly installed water tank wing plate, and water tank wing plate is fixed on the water tank fitting seat on subframe 3 by fixing bolt 5.
But, adopt this mode being fixedly connected with, because water tank wing plate is welded on water tank, affected by positioning precision and welding deformation, its position, angle precision are lower, while causing pumping unit 1 to be installed, need to adjust water tank fitting seat makes water tank 4 both sides contour, then join weldering water tank fitting seat, cause and adjust control difficulty, join weldering and take time and effort.And adjust not in place or welding deformation and easily cause pumping unit 1 to be distorted, reduce the coaxality of pumping oil cylinder and concrete cylinder, and then caused reduce the working life of the critical components such as piston, oil cylinder and concrete cylinder.
In addition, because three angles of integral installation angle, hopper support angle and the water tank wing plate angle of pumping unit existed location, if angle difference is larger, can causes pumping unit to produce internal stress is installed, cause pumping unit distortion.
Again, pumping unit is maintainable poor, and while for the first time pumping unit being installed, part dimension error and alignment error can be eliminated by joining weldering, must slice off water tank mounting plate and again join the new water tank mounting plate of weldering while changing pumping unit.Finally, four mounting points of pumping unit are all fixing, and the distortion of subframe and vibration will be delivered to pumping unit completely, reduce pumping unit coaxality.
The second water tank supporting structure of the prior art as shown in Figure 2, pumping unit 1 hopper end is connected with subframe 3 by hopper articulating point 6, water tank 4 both sides are designed with two circular holes, insert two mount pins 7 in circular hole, and mount pin 7 is fixed on water tank on subframe 3 by anchor ear.With first kind of way in the same manner, in the time that two mount pins of water tank both sides are not contour, easily cause pumping unit distortion; In addition, water tank is hinged on subframe 3 by mount pin 7, and the distortion of subframe 3 and vibration still will be delivered to water tank mount pin 7 completely, reduce pumping unit coaxality; Again, hopper end is two hinged suspensions, in pumping unit commutation and pumping procedure, swing larger with the front and back changing of the relative positions, and water tank end is fixed by mount pin, cannot synchronously swing and the changing of the relative positions pumping unit distortion that will be distorted, reduce coaxality, reduce the working life of the critical components such as piston, oil cylinder and concrete cylinder.
In sum, size error and assembly error that pumping unit support fixed structure of the prior art all cannot self adaption pumping unit parts, easily cause pumping unit distortion.Also cannot isolate distortion and the vibration of subframe 3, the distortion of subframe 3 and vibration can be directly delivered to pumping unit, also may cause pumping unit distortion.
Summary of the invention
The present invention aims to provide a kind of pumping equipment of self adaption pumping unit size error.
The invention provides a kind of pumping equipment, comprise frame and be arranged on the pumping unit in frame; Pumping unit comprises hopper and the pumping power unit being connected with hopper, pumping power unit comprises two concrete cylinders and drives respectively two oil cylinders of two concrete cylinders, and the water tank of connection oil cylinder and concrete cylinder, pumping equipment also comprises articulated linkage, articulated linkage is between two oil cylinders or two concrete cylinders, and upper end and the frame of articulated linkage are hinged, lower end and the water tank of articulated linkage are hinged.
Further, pumping equipment also comprises frame bearing, and frame bearing is fixedly installed in frame and is positioned at the below of oil cylinder, and the upper end of articulated linkage and frame bearing hinged.
Further, frame bearing behaviour cross-beam of character form, man type crossbeam comprises the convex-shaped cavity in the middle of being positioned at and the supporting leg extending from convex-shaped cavity to both sides, and supporting leg is fixedly connected with frame, and convex-shaped cavity is opening to extension and its underpart between two oil cylinders; The upper end of articulated linkage is inserted in convex-shaped cavity and side walls hinged with convex-shaped cavity from the opening of the bottom of convex-shaped cavity.
Further, man type crossbeam comprises two man type transverse slats and is fixedly installed on two middle gussets between two man type transverse slats; Man type transverse slat is about its center line symmetry, and two man type transverse slats are oppositely arranged, and gusset is about the plane symmetry setting at the center line place of man type transverse slat in the middle of two; Middle gusset has vertical portion and the leg section being fixedly connected with lower end, vertical portion; In the middle of two, the vertical portion of gusset and the middle part of two man type transverse slats surround convex-shaped cavity; In the middle of two, on the vertical portion of gusset, be provided with hinged axis hole.
Further, pumping equipment also comprises water tank boatswain chair, and the first end of water tank boatswain chair is fixedly connected on the bottom of water tank, water tank boatswain chair second end form two hinge ears, the lower end of articulated linkage two hinge ear between and with two hinge ears hinged.
Further, water tank boatswain chair also comprises the stiffening rib that is arranged on hinge ear side.
Further, water tank boatswain chair also comprises the reinforcing prop that is arranged on two hinge ear tops, and reinforcing prop is fixedly connected with two hinge ears.
Further, pumping equipment also comprises elastic support, and elastic support is arranged on the both sides of water tank and rocks with the side direction of restriction water tank.
Further, elastic support comprises the fixed supporting seat being fixedly installed in frame and can be arranged on to substantially horizontal adjusting the cushion on fixed supporting seat, cushion and water tank butt.
Further, have the chute that along continuous straight runs extends on fixed supporting seat, be equipped with slide bar in chute, the first end of slide bar is provided with the bolt that regulates the motion of slide bar along continuous straight runs, and cushion is fixedly installed on the second end of slide bar.
Pump in accordance with the present invention is sent equipment, by articulated linkage, water tank is suspended in frame, and articulated linkage is between two oil cylinders or two concrete cylinders, rigid support of the prior art or mistake are located by connecting, change flexible self adaption into and hang, can well absorb size error and the assembly error of pumping assembly of elements, the axial tension distortion in self adaption pumping unit pumping procedure, thereby prevent pumping unit distortion, make fixing more reliable.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the first support fixed structure schematic diagram of pumping unit of the prior art;
Fig. 2 is the second support fixed structure schematic diagram of pumping unit of the prior art;
Fig. 3 is the supporting structure schematic diagram of pumping unit of the present invention;
Fig. 4 is the plan structure schematic diagram of Fig. 3;
Fig. 5 is according to the structural representation of water tank support and connection of the present invention;
Fig. 6 is the structural representation according to articulated linkage of the present invention;
Fig. 7 a is the main TV structure schematic diagram according to man type frame of the present invention;
Fig. 7 b is the main TV structure schematic diagram according to man type frame of the present invention;
Fig. 8 is according to the linkage structure schematic diagram of water tank of the present invention and water tank boatswain chair;
Fig. 9 is according to the structural representation of water tank boatswain chair of the present invention; And
Figure 10 is the structural representation according to elastic support of the present invention.
Embodiment
Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
As shown in Fig. 3 to 5, pump in accordance with the present invention is sent equipment, comprises frame 10 and is arranged on the pumping unit 20 in frame 10; Pumping unit 20 comprises hopper 21 and the pumping power unit being connected with hopper 21, pumping power unit comprises two concrete cylinders 23 and drives respectively two oil cylinders 24 of two concrete cylinders 23, and the water tank 22 of connection oil cylinder 24 and concrete cylinder 23, pumping equipment also comprises articulated linkage 41, articulated linkage 41 is between two oil cylinders 24 or two concrete cylinders 23, and the upper end of articulated linkage 41 and frame 10 are hinged, the lower end of articulated linkage 41 and water tank 22 are hinged.
The present invention is suspended in water tank 22 in frame 10 by articulated linkage 41, and articulated linkage 41 is between two oil cylinders, be that 22, whole water tank hangs by articulated linkage 41 single-points, effectively improve the convenience of installing, and the distortion that can reduce frame impact that pumping unit erection is caused, even pumping unit or frame produce a certain amount of distortion and also can not produce internal stress after installation, thereby improve pumping unit coaxial accuracy, improve the working life of the critical components such as piston, oil cylinder and concrete cylinder.In the process of pumping unit pumping, cushion the impact of pumping unit and reduce pumping unit the vibration that is passed to vehicle frame, reduce the vibration of whole pump truck domain in pumping procedure, thereby reduce the vibration of pumping vehicle arm rack in pumping procedure, improve the stability of pumping.According to the needs of mounting point, in the present invention, articulated linkage 41 also can be arranged between two concrete cylinders 23.
As shown in Figure 6, articulated linkage 41 entirety are tabular, be provided with axis hole at its two ends, for hinged with water tank 22 and frame 10 respectively, preferably, in the upper end of articulated linkage 41, joint shaft bearing is set, be that articulated linkage 41 upper ends adopt ball pivot to be connected with frame, can more effectively isolate the impact that frame 10 and pumping unit 20 are out of shape, prevent internal stress, improve the working life of the critical components such as piston, oil cylinder and concrete cylinder.
Shown in Fig. 5 and Fig. 7 a and Fig. 7 b, pumping equipment also comprises frame bearing 43, and frame bearing 43 is fixedly installed in frame 10 and is positioned at the below of oil cylinder 24, and the upper end of articulated linkage 41 and frame bearing 43 hinged.Frame bearing 43 arranges the below of oil cylinder 24, thereby makes whole supporting structure be positioned at pumping unit below, facilitates the integral hoisting of pumping unit.
Shown in Fig. 7 a and Fig. 7 b, frame bearing 43 is people's cross-beam of character form, adopts man type crossbeam to improve frame bearing 43 intensity and rigidity, thereby improves structural strength.Particularly, man type crossbeam comprises the convex-shaped cavity 431 in the middle of being positioned at and the supporting leg 432 extending from convex-shaped cavity 431 to both sides, supporting leg 432 is fixedly connected with frame 10, convex-shaped cavity 431 is opening to extension and its underpart between two oil cylinders 24, the upper end of articulated linkage 41 is inserted in convex-shaped cavity 431 and side walls hinged with convex-shaped cavity 431 from the opening of the bottom of convex-shaped cavity 431, also be that the main structure of convex-shaped cavity 431 is all between two oil cylinders, thereby make full use of two spaces between oil cylinder, make more compact structure.
More specifically, man type crossbeam comprises two man type transverse slats 433 and is fixedly installed on two middle gussets 434 between two man type transverse slats 433, man type transverse slat 433 is about its center line symmetry, two man type transverse slats 433 are oppositely arranged, and gusset 434 is about the plane symmetry setting at the center line place of man type transverse slat 433 in the middle of two.The design of employing said structure, makes man type transverse slat 433 bear frame bearing 43 mainly stressed, high in the middle of man type transverse slat 322, two bottoms, and the middle two terminal circle arc-shaped transition that arrives, can effectively improve the resistance to flexure of man type transverse slat 322, and avoid stress to concentrate.
Shown in Fig. 5 and Fig. 8 to 9, pumping equipment also comprises water tank boatswain chair 42, the first end of water tank boatswain chair 42 is fixedly connected on the bottom of water tank 22, and the second end of water tank boatswain chair 42 forms two hinge ear 42a, and the lower end of articulated linkage 41 is between two hinge ear 42a and hinged with two hinge ear 42a.By water tank boatswain chair 42 by the point of suspension of water tank 22 to extending certain distance away from the direction of water tank 22, thereby avoid water tank 22 and articulated linkage 41 to interfere, install also can to frame bearing 43 and abdicate certain space.
Particularly, shown in Fig. 3, pumping unit entirety is low early and high after being obliquely installed, more backward, height difference between frame 10 and oil cylinder is higher, by water tank boatswain chair 42 by water tank 22 outstanding fall a little to extending certain distance away from the direction of water tank 22, make frame corresponding position there is enough space frame bearings 43, make frame bearing 43, water tank boatswain chair 42, articulated linkage 41 all be positioned at the bottom of pumping unit, thereby facilitate integral hoisting.
Particularly, shown in Fig. 8 and Fig. 9, two stiffening rib 42b that the hinge hinged side of ear 42a is provided with of water tank boatswain chair 42, thus improve the intensity of cutting with scissors ear 42a.Preferably, as shown in Figure 9, above two hinge ear 42a, be also provided with reinforcing prop 42c, reinforcing prop 42c is fixedly connected with two hinge ear 42a simultaneously, improves the resistance to flexure of hinge ear 42a.
As shown in figure 10, pumping equipment also comprises elastic support 44, and elastic support 44 is arranged on the both sides of water tank 22 and rocks with the side direction of restriction water tank 22.Be in the present invention, because water tank is single-point support, frequently rock for fear of water tank, by elastic support 44 is set, thereby water tank 22 is formed to certain elastic limit, form certain buffering, can reach isolation distortion and the effect of vibrating.
Particularly, elastic support 44 comprises the fixed supporting seat 441 being fixedly installed in frame 10 and can be arranged on to substantially horizontal adjusting the cushion 442 on fixed supporting seat 441, cushion 442 and water tank 22 butts, cushion 442 along continuous straight runs regulate, thereby can regulate as required, guarantee cushion 442 and water tank 22 butt effects, thereby guarantee cushioning effect, avoid water tank horizontal jitter.
More specifically, on fixed supporting seat 441, there is the chute 443 that along continuous straight runs extends, in chute 443, be equipped with slide bar 444, the first end of slide bar 444 is provided with the bolt 445 that regulates slide bar 444 along continuous straight runs motions, and cushion 442 is fixedly installed on the second end of slide bar 444.By rotating bolt 445, can promote slide bar 444 moves, thereby distance and elastic force between adjustable elastic pad 442 and water tank 22, thereby realize elastic buffer, on bolt 445, be equipped with locking nut 446, in the time that rotating bolt 445 promotes cushion 442 to correct position, tighten locking nut 446, can prevent that bolt 445 is loosening, keep cushion 442 positions and elastic force stable.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
Pump in accordance with the present invention is sent equipment, by articulated linkage, water tank is suspended in frame, and articulated linkage is between two oil cylinders, rigid support of the prior art or mistake are located by connecting, change flexible self adaption into and hang, can well absorb size error and the assembly error of pumping assembly of elements, the axial tension distortion in self adaption pumping unit pumping procedure, thereby prevent pumping unit distortion, make fixing more reliable.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a pumping equipment, comprises frame (10) and is arranged on the pumping unit (20) in described frame (10);
Described pumping unit (20) comprises hopper (21) and the pumping power unit being connected with described hopper (21), described pumping power unit comprises two concrete cylinders (23) and drives respectively two oil cylinders (24) of two described concrete cylinders (23), and connect the water tank (22) of described oil cylinder (24) and described concrete cylinder (23), it is characterized in that
Described pumping equipment also comprises articulated linkage (41), described articulated linkage (41) is positioned between described two oil cylinders (24) or described two concrete cylinders (23), and the upper end of described articulated linkage (41) and described frame (10) are hinged, the lower end of described articulated linkage (41) and described water tank (22) are hinged.
2. pumping equipment according to claim 1, is characterized in that,
Described pumping equipment also comprises frame bearing (43), and described frame bearing (43) is fixedly installed on described frame (10) goes up and be positioned at the below of described oil cylinder (24), and the upper end of described articulated linkage (41) and described frame bearing (43) hinged.
3. pumping equipment according to claim 2, is characterized in that,
Described frame bearing (43) is people's cross-beam of character form, described man type crossbeam comprises the convex-shaped cavity (431) in the middle of being positioned at and the supporting leg (432) extending from described convex-shaped cavity (431) to both sides, described supporting leg (432) is fixedly connected with described frame (10), and described convex-shaped cavity (431) is opening to extension and its underpart between two described oil cylinders (24);
The upper end of described articulated linkage (41) is inserted in described convex-shaped cavity (431) and side walls hinged with described convex-shaped cavity (431) from the opening of the bottom of described convex-shaped cavity (431).
4. pumping equipment according to claim 3, is characterized in that,
Described man type crossbeam comprises two man type transverse slats (433) and is fixedly installed on two the middle gussets (434) between described two man type transverse slats (433);
Described man type transverse slat (433) is about its center line symmetry, and two described man type transverse slats (433) are oppositely arranged, and two described middle gussets (434) are about the plane symmetry setting at the center line place of man type transverse slat (433);
In the middle of described, gusset (434) has vertical portion (434a) and the leg section (434b) being fixedly connected with lower end, described vertical portion (434a);
The vertical portion (434a) of two described middle gussets (434) surrounds described convex-shaped cavity (431) with the middle part of two described man type transverse slats (433);
On the vertical portion (434a) of two described middle gussets (434), be provided with hinged axis hole (434c).
5. pumping equipment according to claim 3, is characterized in that,
Described pumping equipment also comprises water tank boatswain chair (42), the first end of described water tank boatswain chair (42) is fixedly connected on the bottom of described water tank (22), the second end of described water tank boatswain chair (42) forms two hinge ears (42a), and the lower end of described articulated linkage (41) is positioned between described two hinges ears (42a) and is hinged with described two hinge ears (42a).
6. pumping equipment according to claim 5, is characterized in that,
Described water tank boatswain chair (42) also comprises the stiffening rib (42b) that is arranged on described hinge ear (42a) side.
7. according to the pumping equipment described in claim 5 or 6, it is characterized in that,
Described water tank boatswain chair (42) also comprises the reinforcing prop (42c) that is arranged on two described hinge ears (42a) top, and described reinforcing prop (42c) is fixedly connected with two described hinge ears (42a).
8. pumping equipment according to claim 1, is characterized in that,
Described pumping equipment also comprises elastic support (44), and described elastic support (44) is arranged on the both sides of described water tank (22) and rocks with the side direction that limits described water tank (22).
9. pumping equipment according to claim 8, is characterized in that,
Described elastic support (44) comprises the fixed supporting seat (441) being fixedly installed in described frame (10) and can be arranged on to substantially horizontal adjusting the cushion (442) on described fixed supporting seat (441), described cushion (442) and described water tank (22) butt.
10. pumping equipment according to claim 9, is characterized in that,
On described fixed supporting seat (441), there is the chute (443) that along continuous straight runs extends, in described chute (443), be equipped with slide bar (444), the first end of described slide bar (444) is provided with the bolt (445) that regulates the motion of described slide bar (444) along continuous straight runs, and described cushion (442) is fixedly installed on the second end of described slide bar (444).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410057890.XA CN103775300B (en) | 2014-02-20 | 2014-02-20 | pumping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410057890.XA CN103775300B (en) | 2014-02-20 | 2014-02-20 | pumping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103775300A true CN103775300A (en) | 2014-05-07 |
| CN103775300B CN103775300B (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410057890.XA Active CN103775300B (en) | 2014-02-20 | 2014-02-20 | pumping device |
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| Country | Link |
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| CN (1) | CN103775300B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109278149A (en) * | 2018-11-19 | 2019-01-29 | 扬州快乐机械有限公司 | A kind of elevating mechanism and spreading machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0422745A1 (en) * | 1989-10-13 | 1991-04-17 | Pieter Faber | Concrete-pumping device |
| CN2526540Y (en) * | 2001-11-01 | 2002-12-18 | 三一重工股份有限公司 | Pumping mechanism easy to replace concrete piston |
| CN101956459A (en) * | 2010-09-19 | 2011-01-26 | 三一重工股份有限公司 | Pumping machine |
| CN102505850A (en) * | 2011-11-09 | 2012-06-20 | 中联重科股份有限公司 | Mounting structure of concrete pumping unit and concrete pumping equipment |
| EP2549103A1 (en) * | 2010-03-16 | 2013-01-23 | Hunan Sany Intelligent Control Equipment Co., Ltd | Concrete pumping structure |
| CN103321871A (en) * | 2013-06-21 | 2013-09-25 | 中联重科股份有限公司 | Pumping mechanism and pumping equipment comprising same |
-
2014
- 2014-02-20 CN CN201410057890.XA patent/CN103775300B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0422745A1 (en) * | 1989-10-13 | 1991-04-17 | Pieter Faber | Concrete-pumping device |
| CN2526540Y (en) * | 2001-11-01 | 2002-12-18 | 三一重工股份有限公司 | Pumping mechanism easy to replace concrete piston |
| EP2549103A1 (en) * | 2010-03-16 | 2013-01-23 | Hunan Sany Intelligent Control Equipment Co., Ltd | Concrete pumping structure |
| CN101956459A (en) * | 2010-09-19 | 2011-01-26 | 三一重工股份有限公司 | Pumping machine |
| CN102505850A (en) * | 2011-11-09 | 2012-06-20 | 中联重科股份有限公司 | Mounting structure of concrete pumping unit and concrete pumping equipment |
| CN103321871A (en) * | 2013-06-21 | 2013-09-25 | 中联重科股份有限公司 | Pumping mechanism and pumping equipment comprising same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109278149A (en) * | 2018-11-19 | 2019-01-29 | 扬州快乐机械有限公司 | A kind of elevating mechanism and spreading machine |
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| CN103775300B (en) | 2016-08-17 |
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