CN112681751A - Multifunctional efficient concrete pouring device - Google Patents
Multifunctional efficient concrete pouring device Download PDFInfo
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- CN112681751A CN112681751A CN202011547709.5A CN202011547709A CN112681751A CN 112681751 A CN112681751 A CN 112681751A CN 202011547709 A CN202011547709 A CN 202011547709A CN 112681751 A CN112681751 A CN 112681751A
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Abstract
The invention discloses a multifunctional efficient concrete pouring device, and belongs to the technical field of concrete pouring equipment. A multifunctional high-efficiency concrete pouring device comprises a base, universal wheels are installed at four corners of the bottom of the base, a positioning support assembly is arranged at the bottom of the base, a concrete tank is installed at the top of the base, a pumping mechanism is connected to the discharge end of the concrete tank, a first pumping pipe and a second pumping pipe are connected to the discharge end of the pumping mechanism, the first pumping pipe and the second pumping pipe are installed on the base through a first support, a first connecting bent pipe and a second connecting bent pipe are respectively connected to the ends, far away from the pumping mechanism, of the first pumping pipe and the second pumping pipe, the end, far away from the first pumping pipe, of the first connecting bent pipe is vertically upward, the end, far away from the second pumping pipe, of the second connecting bent pipe is obliquely upward, and the first connecting bent pipe and the second connecting bent pipe are both installed at the top of the base; the invention improves the applicability of the pouring height and the supporting stability in the pouring process.
Description
Technical Field
The invention relates to the technical field of concrete pouring equipment, in particular to a multifunctional efficient concrete pouring device.
Background
The concrete pouring refers to the process from pouring concrete into a mold to plasticizing, and is mainly applied to engineering construction in the fields of railway and highway tunnels, water conservancy and hydropower, subways, mine roadways, military facilities, various underground building construction, emergency rescue and the like. The basic process is that the ready-mixed concrete is conveyed to the receiving surface by a pipeline by using hydraulic pressure, and the concrete support layer is formed after the ready-mixed concrete is quickly solidified and hardened.
In the prior art, the patent with the patent application number of CN 201811383436.8 discloses a concrete pouring device, which comprises a stirring barrel and a base, wherein a stirring box is arranged on the base, a stirring shaft in the stirring box is movably arranged on a top plate and is connected with a servo motor on the top plate, and the upper end and the lower end of the stirring shaft in the stirring box are provided with thread sections; helical blades are arranged on the stirring shaft between the thread sections, stirring blades are arranged on the side wall of the stirring barrel, and communication holes are formed in the side wall of the stirring barrel; a first sleeve with threads arranged on the inner side wall and the outer side wall is arranged on the bottom wall of the stirring barrel; the upper end of the stirring barrel is connected with a second sleeve through a connecting block; the stirring barrel is arranged on the threaded section of the stirring shaft through a first sleeve and a second sleeve; the top end of the stirring box is provided with a feed hopper and a water inlet pipe extending to the position right above the water inlet; the edge of the bottom plate of the stirring box is provided with a discharge hole with a bottom, but the stirring box still has the defect that the support stability of the base is poor, so that the pouring stability of the stirring box is poor.
The patent number is CN201620583330.2, a take shock-absorbing function's high-efficiency concrete casting machine is disclosed, including barrel and a feeding section of thick bamboo, a feeding section of thick bamboo lower extreme is equipped with the injection pump, be equipped with screw rod and lower screw rod in the barrel, it is located the lower screw rod upside to go up the screw rod, it is connected with from the driving wheel to go up the screw rod right side, be connected with the intermediate wheel from the driving wheel lower extreme, the intermediate wheel lower extreme is connected with the action wheel, the action wheel right side is connected with the reduction gear, the reduction gear right-hand member is connected with the pouring motor, the pouring motor is equipped with the motor protection casing outward, motor protection casing upper end is equipped with control panel, the barrel lower extreme is connected with the base, base lower extreme both sides are equipped with the spring assembly, spring assembly. The twin-screw is used for conveying and pouring in the patent, although the purpose of increasing the lift can be achieved, the effect of the pouring machine for pouring with the hose is not obvious, and the stability is poor.
Disclosure of Invention
The invention aims to solve the problem of poor pouring stability in the prior art, and provides a multifunctional high-efficiency concrete pouring device.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multifunctional high-efficiency concrete pouring device comprises a base, universal wheels are installed at four corners of the bottom of the base, a positioning support assembly is arranged at the bottom of the base, a concrete tank is installed at the top of the base, a pumping mechanism is connected to the discharge end of the concrete tank, a first pumping pipe and a second pumping pipe are connected to the discharge end of the pumping mechanism, the first pumping pipe and the second pumping pipe are installed on the base through a first support, a first connecting bent pipe and a second connecting bent pipe are respectively connected to the ends, far away from the pumping mechanism, of the first pumping pipe and the second pumping pipe, the end, far away from the first pumping pipe, of the first connecting bent pipe is vertically upward, the end, far away from the second pumping pipe, of the second connecting bent pipe is inclined upward, the first connecting bent pipe and the second connecting bent pipe are both installed at the top of the base through a second support, and the end, far away from the first pumping pipe, of the first connecting bent pipe is connected with a vertical pouring pipe through a, the outer wall sliding connection who pours the pipe perpendicularly has vertical sleeve pipe, be connected with lifting unit between first flange and the vertical sleeve pipe, the pipe is pour in the slope through second flange connection to the second connection bent pipe, the outer wall sliding connection who pours the pipe in the slope has the slope sleeve pipe, be connected with flexible subassembly between second flange and the slope sleeve pipe, vertical sleeve pipe and slope sleeve pipe's discharge end all are connected with pours the head.
Preferably, the positioning support component comprises a U-shaped mounting seat, the U-shaped mounting seat is mounted at the bottom of the base, and the two sets of U-shaped mounting seats are symmetrically distributed about the central axis of the base, a gear is rotatably connected to the U-shaped mounting seat through a rotating shaft, the rotating shaft penetrates through the U-shaped mounting seat to extend outwards, the extending end of the rotating shaft is connected with a U-shaped support frame, a sliding plate is further slidably connected to the bottom of the base, the sliding plate is adjacent to one end, away from each other, of the sliding plate, a toothed plate meshed with the gear is fixedly connected to the other end of the sliding plate, the sliding plate is connected to one end, close to each other, of the sliding plate, a transmission rod.
Preferably, the adjusting part comprises a connecting rod, the connecting rod is rotatably connected to a hinge point of the transmission rod, the bottom of the base is further fixedly connected with an installation block, and an electric telescopic rod is connected between the end part of the connecting rod and the installation block.
Preferably, the bottom of the base is fixedly connected with symmetrically distributed U-shaped sliding frames, and the sliding plates are connected with the U-shaped sliding frames in a sliding mode.
Preferably, the lifting assembly comprises hydraulic pumps which are distributed at the outer edge of the first flange at equal intervals, an annular mounting seat is sleeved on the outer wall of the vertical pouring pipe, a hydraulic rod is fixedly connected between the output end of the hydraulic pump and the annular mounting seat, and the outer edge of the first flange is also provided with a limiting rod connected with the annular mounting seat in a sliding manner.
Preferably, flexible subassembly includes the drive lead screw, the outer fringe at the second flange is installed to the drive lead screw, the outer wall cover that the pipe was pour in the slope has the annular thread seat, the one end that the second flange was kept away from to the drive lead screw links to each other with the annular thread seat screw thread, just the one end that the drive lead screw passed the annular thread seat is connected with sliding connection at slope sleeve pipe outer wall ring limiting plate.
Preferably, the outer fringe department rigid coupling that the pipe was pour to the slope is kept away from to the base has L type pole, the horizontal segment rigid coupling of L type pole has the locating lever of vertical setting, can dismantle on the locating lever and be connected with the balancing weight.
Preferably, the first pumping pipe and the second pumping pipe are respectively provided with a first electromagnetic valve and a second electromagnetic valve.
Preferably, a communicating pipe is further connected between the first pumping pipe and the second pumping pipe, and a third electromagnetic valve is further disposed at a junction of the communicating pipe and the first pumping pipe and a junction of the communicating pipe and the second pumping pipe.
Preferably, the inclined sleeve extends to the extreme position at a height equal to the height of the vertical casting pipe.
Compared with the prior art, the invention provides a multifunctional high-efficiency concrete pouring device, which has the following beneficial effects:
1. this multi-functional high-efficiency concrete pouring device, through controlling the electric telescopic handle shrink, at the in-process that electric telescopic handle shrinks, drive the contained angle grow between the transfer line, drive adjacent sliding plate and keep away from each other along U type sliding frame, and then drive the pinion rack and outwards remove, and then drive gear revolve, the support frame that will be in the horizontality deflects towards ground, touch the end until the support frame, electric telescopic handle stops the shrink, realizes the outrigger of base, improves the stability of pouring the in-process.
2. This multi-functional high-efficiency concrete pouring device when pouring to low high casting die, send into the concrete jar with the concrete that the stirring is good, adjust the drive lead screw on the telescopic component, the slope sleeve pipe that the drive lead screw drove the connection of annular thread seat extends to appointed length along the drive lead screw, then opens the first electromagnetic valve on the first pump sending pipe, goes into the concrete through pumping mechanism to first pump sending pipe, pours through pouring the head.
3. This multi-functional high-efficiency concrete pouring device when pouring to high casting die, closes first solenoid valve, opens the second solenoid valve, and the simultaneous control hydraulic pump extends, drives annular mount pad and rises to appointed height along pouring the pipe perpendicularly, pours through the head of pouring on the vertical sleeve pipe, realizes vibrating not co-altitude casting die's the function of pouring, and the suitability is strong.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a second schematic structural diagram of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a bottom view of the present invention;
FIG. 5 is a third schematic structural diagram of the present invention;
fig. 6 is an enlarged schematic structural view of a portion a in the first drawing of the present invention.
In the figure: 1. a base; 2. a universal wheel; 3. a concrete tank; 4. a first pumping pipe; 5. a second pumping pipe; 6. a first connecting elbow; 7. a second connecting elbow; 8. a second bracket; 9. a first flange; 10. vertically pouring a pipe; 11. a vertical sleeve; 12. a second flange; 13. obliquely pouring a pipe; 14. tilting the sleeve; 15. pouring a head; 16. a U-shaped mounting seat; 17. a rotating shaft; 18. a gear; 19. a U-shaped support frame; 20. a sliding plate; 21. a toothed plate; 22. a transmission rod; 23. a connecting rod; 24. mounting blocks; 25. an electric telescopic rod; 26. a U-shaped sliding frame; 27. a hydraulic pump; 28. an annular mounting seat; 29. a hydraulic lever; 30. a limiting rod; 31. driving the screw rod; 32. an annular threaded seat; 33. an annular limiting plate; 34. an L-shaped rod; 35. positioning a rod; 36. a balancing weight; 37. a first solenoid valve; 38. a second solenoid valve; 39. a communicating pipe; 40. a third electromagnetic valve; 41. a first support.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Example (b):
referring to fig. 1-6, a multifunctional high-efficiency concrete pouring device comprises a base 1, universal wheels 2 are mounted at four corners of the bottom of the base 1, a positioning support assembly is arranged at the bottom of the base 1, a concrete tank 3 is mounted at the top of the base 1, a pumping mechanism is connected to the discharge end of the concrete tank 3, a first pumping pipe 4 and a second pumping pipe 5 are connected to the discharge end of the pumping mechanism, the first pumping pipe 4 and the second pumping pipe 5 are mounted on the base 1 through a first support 41, a first connecting elbow 6 and a second connecting elbow 7 are respectively connected to the ends of the first pumping pipe 4 and the second pumping pipe 5, which are far away from the pumping mechanism, the end of the first connecting elbow 6, which is far away from the first pumping pipe 4, is vertically upward, the end of the second connecting elbow 7, which is far away from the second pumping pipe 5, is obliquely upward, the first connecting elbow 6 and the second connecting elbow 7 are both mounted at the top of the base 1 through, the one end that first connecting elbow 6 kept away from first pump sending pipe 4 is connected with through first flange 9 and pours pipe 10 perpendicularly, the outer wall sliding connection who pours pipe 10 perpendicularly has vertical sleeve pipe 11, be connected with lifting unit between first flange 9 and the vertical sleeve pipe 11, second connecting elbow 7 is connected with the slope through second flange 12 and pours pipe 13, the outer wall sliding connection who pours pipe 13 the slope has slope sleeve pipe 14, be connected with flexible subassembly between second flange 12 and the slope sleeve pipe 14, vertical sleeve pipe 11 all is connected with the discharge end of slope sleeve pipe 14 and pours head 15.
The location supporting component includes U type mount pad 16, U type mount pad 16 installs the bottom at base 1, and the axis symmetric distribution about base 1 is two sets of, it is connected with gear 18 to rotate through pivot 17 on the U type mount pad 16, and pivot 17 passes U type mount pad 16 and outwards extends, the extension end of pivot 17 is connected with U type support frame 19, base 1's bottom sliding connection still has sliding plate 20, the one end that adjacent sliding plate 20 kept away from each other the rigid coupling respectively has with gear 18 engaged with pinion rack 21, the one end that continuous sliding plate 20 was close to each other all rotates and is connected with transfer line 22, the one end that adjacent transfer line 22 was close to each other is articulated each other, transfer line 22's pin joint still is connected with adjusting part.
The adjusting component comprises a connecting rod 23, the connecting rod 23 is rotatably connected to a hinged point of the transmission rod 22, the bottom of the base 1 is further fixedly connected with an installation block 24, and an electric telescopic rod 25 is connected between the end of the connecting rod 23 and the installation block 24.
The bottom of the base 1 is fixedly connected with symmetrically distributed U-shaped sliding frames 26, and the sliding plate 20 is connected with the U-shaped sliding frames 26 in a sliding manner.
The lifting assembly comprises hydraulic pumps 27, the hydraulic pumps 27 are equidistantly distributed on the outer edge of the first flange 9, an annular mounting seat 28 is sleeved on the outer wall of the vertical pouring pipe 10, a hydraulic rod 29 is fixedly connected between the output end of the hydraulic pumps 27 and the annular mounting seat 28, and a limiting rod 30 is slidably connected with the outer edge of the first flange 9 and the annular mounting seat 28.
The telescopic assembly comprises a driving screw rod 31, the driving screw rod 31 is installed at the outer edge of the second flange 12, an annular thread seat 32 is sleeved on the outer wall of the inclined pouring pipe 13, one end, far away from the second flange 12, of the driving screw rod 31 is in threaded connection with the annular thread seat 32, and one end, penetrating through the annular thread seat 32, of the driving screw rod 31 is connected with an annular limiting plate 33 in sliding connection with the outer wall of the inclined sleeve 14.
The outer edge of the base 1 far away from the inclined pouring pipe 13 is fixedly connected with an L-shaped rod 34, the horizontal section of the L-shaped rod 34 is fixedly connected with a vertically arranged positioning rod 35, and a balancing weight 36 is detachably connected to the positioning rod 35.
The first pumping pipe 4 and the second pumping pipe 5 are respectively provided with a first electromagnetic valve 37 and a second electromagnetic valve 38.
A communicating pipe 39 is further connected between the first pumping pipe 4 and the second pumping pipe 5, and a third electromagnetic valve 40 is further arranged at the junction of the communicating pipe 39 and the first pumping pipe 4 and the second pumping pipe 5.
The extension of the inclined sleeve 14 to the extreme position is at a height equal to the height of the vertical cast pipe 10.
When the device is used, the base 1 is moved to a specified position, the electric telescopic rod 25 is controlled to contract, in the process of contracting the electric telescopic rod 25, an included angle between the transmission rods 22 is driven to be increased, the adjacent sliding plates 20 are driven to be away from each other along the U-shaped sliding frame 26, the toothed plate 21 is further driven to move outwards, the gear 18 is further driven to rotate, the supporting frame 19 in a horizontal state is deflected towards the ground until the supporting frame 19 is in contact with the bottom, the electric telescopic rod 25 stops contracting, stable supporting of the base 1 is achieved, and stability in the pouring process is improved;
when pouring is carried out on a low-height pouring mold, the stirred concrete is sent into the concrete tank 3, the driving screw rod 31 on the telescopic assembly is adjusted, the driving screw rod 31 drives the inclined sleeve 14 connected with the annular thread seat 32 to extend to a specified length along the driving screw rod 31, then the first electromagnetic valve 37 on the first pumping pipe 4 is opened, the concrete is pumped into the first pumping pipe 4 through the pumping mechanism, and pouring is carried out through the pouring head 15;
when pouring is performed on the high-pouring mold, the first electromagnetic valve 37 is closed, the second electromagnetic valve 38 is opened, the hydraulic pump 27 is controlled to extend, the annular mounting seat 28 is driven to ascend to a specified height along the vertical pouring pipe 10, pouring is performed through the pouring head 15 on the vertical sleeve 11, the pouring function of vibrating the pouring molds with different heights is achieved, and the applicability is high.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The utility model provides a multi-functional high-efficiency concrete pouring device, includes base (1), its characterized in that, universal wheel (2) are installed to the bottom four corners department of base (1), the bottom of base (1) is provided with the location support subassembly, concrete tank (3) are installed at the top of base (1), the discharge end of concrete tank (3) is connected with pumping mechanism, pumping mechanism's discharge end is connected with first pumping pipe (4) and second pumping pipe (5), first pumping pipe (4) and second pumping pipe (5) are installed on base (1) through first support (41), the one end that pumping mechanism was kept away from to first pumping pipe (4) and second pumping pipe (5) is connected with first connecting elbow (6) and second connecting elbow (7) respectively, the one end that first pipe pump (4) was kept away from to first connecting elbow (6) is vertical upwards, one end of the second connecting elbow (7) far away from the second pumping pipe (5) inclines upwards, the first connecting bent pipe (6) and the second connecting bent pipe (7) are both arranged at the top of the base (1) through a second bracket (8), one end of the first connecting bent pipe (6) far away from the first pumping pipe (4) is connected with a vertical pouring pipe (10) through a first flange (9), the outer wall of the vertical pouring pipe (10) is connected with a vertical sleeve (11) in a sliding way, a lifting component is connected between the first flange (9) and the vertical sleeve (11), the second connecting bent pipe (7) is connected with an inclined pouring pipe (13) through a second flange (12), the outer wall of the inclined pouring pipe (13) is connected with an inclined sleeve (14) in a sliding way, a telescopic component is connected between the second flange (12) and the inclined sleeve (14), the discharge ends of the vertical sleeve (11) and the inclined sleeve (14) are connected with pouring heads (15).
2. The multifunctional high-efficiency concrete pouring device according to claim 1, characterized in that the positioning and supporting components comprise U-shaped mounting seats (16), the U-shaped mounting seats (16) are mounted at the bottom of the base (1) and are symmetrically distributed in two groups about the central axis of the base (1), gears (18) are rotatably connected to the U-shaped mounting seats (16) through rotating shafts (17), the rotating shafts (17) extend outwards through the U-shaped mounting seats (16), the extending ends of the rotating shafts (17) are connected with U-shaped supporting frames (19), sliding plates (20) are slidably connected to the bottom of the base (1), toothed plates (21) meshed with the gears (18) are fixedly connected to the ends, far away from each other, of the adjacent sliding plates (20), respectively, and a transmission rod (22) is rotatably connected to the ends, close to each other, of the sliding plates (20), the ends, close to each other, of the adjacent transmission rods (22) are hinged to each other, and the hinged point of the transmission rods (22) is further connected with an adjusting assembly.
3. The multifunctional high-efficiency concrete pouring device according to claim 2, characterized in that the adjusting assembly comprises a connecting rod (23), the connecting rod (23) is rotatably connected to a hinged point of the transmission rod (22), a mounting block (24) is fixedly connected to the bottom of the base (1), and an electric telescopic rod (25) is connected between the end of the connecting rod (23) and the mounting block (24).
4. The multifunctional high-efficiency concrete pouring device according to claim 3, characterized in that the bottom of the base (1) is fixedly connected with symmetrically distributed U-shaped sliding frames (26), and the sliding plates (20) are slidably connected with the U-shaped sliding frames (26).
5. The multifunctional high-efficiency concrete pouring device according to claim 4, characterized in that the lifting assembly comprises hydraulic pumps (27), the hydraulic pumps (27) are distributed at equal intervals on the outer edge of the first flange (9), an annular mounting seat (28) is sleeved on the outer wall of the vertical pouring pipe (10), a hydraulic rod (29) is fixedly connected between the output end of the hydraulic pump (27) and the annular mounting seat (28), and a limiting rod (30) is slidably connected with the annular mounting seat (28) on the outer edge of the first flange (9).
6. The multifunctional high-efficiency concrete pouring device according to claim 5, characterized in that the telescopic assembly comprises a driving screw rod (31), the driving screw rod (31) is installed at the outer edge of the second flange (12), the outer wall of the inclined pouring pipe (13) is sleeved with an annular threaded seat (32), one end of the driving screw rod (31) far away from the second flange (12) is in threaded connection with the annular threaded seat (32), and one end of the driving screw rod (31) penetrating through the annular threaded seat (32) is connected with an annular limiting plate (33) which is slidably connected with the outer wall of the inclined sleeve (14).
7. The multifunctional high-efficiency concrete pouring device is characterized in that an L-shaped rod (34) is fixedly connected to the outer edge of the base (1) far away from the inclined pouring pipe (13), a vertically-arranged positioning rod (35) is fixedly connected to the horizontal section of the L-shaped rod (34), and a balancing weight (36) is detachably connected to the positioning rod (35).
8. The multifunctional high-efficiency concrete pouring device according to claim 7, characterized in that a first electromagnetic valve (37) and a second electromagnetic valve (38) are respectively installed on the first pumping pipe (4) and the second pumping pipe (5).
9. The multifunctional high-efficiency concrete pouring device according to claim 8, characterized in that a communication pipe (39) is further connected between the first pumping pipe (4) and the second pumping pipe (5), and a third electromagnetic valve (40) is further arranged at the junction of the communication pipe (39) and the first pumping pipe (4) and the second pumping pipe (5).
10. The multifunctional high-efficiency concrete pouring device according to any one of claims 1 to 9, characterized in that the inclined casing pipe (14) is extended to the extreme position at a height equal to the height of the vertical pouring pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011547709.5A CN112681751A (en) | 2020-12-24 | 2020-12-24 | Multifunctional efficient concrete pouring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011547709.5A CN112681751A (en) | 2020-12-24 | 2020-12-24 | Multifunctional efficient concrete pouring device |
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| CN112681751A true CN112681751A (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011547709.5A Pending CN112681751A (en) | 2020-12-24 | 2020-12-24 | Multifunctional efficient concrete pouring device |
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| CN (1) | CN112681751A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116356828A (en) * | 2023-05-24 | 2023-06-30 | 江苏力引建材科技股份有限公司 | Concrete placement equipment of water conservancy support crown beam |
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| HU0800070D0 (en) * | 2008-02-04 | 2008-03-28 | Silber Meir | Methods for reinforcing existing lattice frame structures having hollow steel primary elements, particularly steel towers with tubular legs |
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| CN116356828A (en) * | 2023-05-24 | 2023-06-30 | 江苏力引建材科技股份有限公司 | Concrete placement equipment of water conservancy support crown beam |
| CN116356828B (en) * | 2023-05-24 | 2023-11-10 | 江苏力引建材科技股份有限公司 | Concrete placement equipment of water conservancy support crown beam |
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