CN209794149U - Vertical prefabricated assembled box culvert auxiliary turnover device - Google Patents
Vertical prefabricated assembled box culvert auxiliary turnover device Download PDFInfo
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- CN209794149U CN209794149U CN201920386608.0U CN201920386608U CN209794149U CN 209794149 U CN209794149 U CN 209794149U CN 201920386608 U CN201920386608 U CN 201920386608U CN 209794149 U CN209794149 U CN 209794149U
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Abstract
the utility model provides a vertical prefabricated assembly type box culvert auxiliary turnover device, which comprises a turnover platform, wherein the turnover platform is in an L shape, a turning part at the bottom of the turnover platform is provided with a rotating shaft, and the rotating shaft is rotatably arranged in a fixed rotating seat; and at least one side of the overturning platform is provided with an overturning oil cylinder for jacking and pulling the overturning platform. Through adopting the scheme that the overturning platform is matched with the overturning oil cylinder, the safety problem existing in the prior art that the hoisting device is used for assisting in overturning can be solved, and the overturning process is safe and reliable. And is convenient for realizing automatic control.
Description
Technical Field
The utility model relates to an assembled box culvert construction field, especially a supplementary turning-over device of vertical prefabricated assembled box culvert.
Background
in the prefabrication process of the single component of the assembled box culvert, due to the fact that the prefabrication posture and the installation posture of the single component are different, after the prefabrication of the component is completed, 90-degree turning-over operation needs to be carried out on the component. The main method for turning over at present is to use a gantry crane or a truck crane to assist in turning over, place waste tires and battens on one side of a bottom plate, lift a single component, place the bottom on the battens on one side, take the side as an axis, move forward through a lifting device to rotate the battens, and thus achieve the purpose of turning over. In the method, at the moment of turning over, the bottom edge of the component is suddenly and completely separated along with the deviation of the gravity center, and the gantry crane or the truck crane swings forwards and backwards in the horizontal direction along with the influence of inertia, is impacted by gravity in the vertical direction, greatly influences the structure of the hoisting equipment and is easy to cause safety accidents. To realize safe and stable turnover of vertical prefabricated box culvert components, no effective solution is available at present.
Some new trial schemes in the prior art are also available, for example, chinese patent document CN206580456U describes a box culvert turnover device for a shield tunnel, which is turned over by a manner similar to grabbing by a manipulator, and the scheme has a complicated structure, is easily limited by the shape of a component, and has low versatility. Chinese patent document CN207566745U describes a turning device for turning over a prefabricated pier stud, which adopts a scheme of a rotating shaft support, but in the scheme, a lifting device is still required to be matched with the turning device to turn over in the turning process, so that the operation is inconvenient and the risk of safety accidents is still present.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a vertical prefabricated assembled box culvert assists turnover device is provided, can realize the 90 upsets of prefabricated assembled box culvert, and the construction ensures safety, in preferred scheme, can also ensure that occupation space is littleer, can realize automated control.
in order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a vertical prefabricated assembly type auxiliary turning-over device for a box culvert comprises a turning platform, wherein the turning platform is in an L shape, a turning part at the bottom of the turning platform is provided with a rotating shaft, and the rotating shaft is rotatably arranged in a fixed rotating seat;
and at least one side of the overturning platform is provided with an overturning oil cylinder for jacking and pulling the overturning platform.
in the preferred scheme, a second rotating supporting plate is further arranged, the end head of the second rotating supporting plate is connected with the rotating shaft, and the bottom of the second rotating supporting plate is hinged with the end head of a second overturning oil cylinder;
the bottom of the first rotating supporting plate is hinged with the end of the first overturning oil cylinder.
in the preferred scheme, a first overturning oil cylinder is arranged on one side of the overturning platform, and the end head of the first overturning oil cylinder is hinged with the overturning platform.
In the preferred scheme, a second overturning oil cylinder is arranged on the other side of the overturning platform, a first rotating supporting plate is further arranged, the end of the first rotating supporting plate is connected with the rotating shaft, and the bottom of the first rotating supporting plate is hinged with the end of the first overturning oil cylinder.
In the preferred scheme, a first overturning oil cylinder is arranged on one side of the overturning platform, a sliding seat sliding along the side wall is arranged on the side wall of the overturning platform, and the sliding seat is hinged with the first overturning oil cylinder;
And a sliding oil cylinder is also arranged on the side wall of the overturning platform and is connected with the sliding seat.
in the preferred scheme, the sliding seat is connected with the sliding rail in a sliding manner, and the two ends of the sliding rail are provided with an upper limiting seat and a lower limiting seat.
in the preferred scheme, a second overturning oil cylinder is arranged on the other side of the overturning platform, a first rotating supporting plate is further arranged, the end of the first rotating supporting plate is connected with the rotating shaft, and the bottom of the first rotating supporting plate is hinged with the end of the first overturning oil cylinder.
In the preferred scheme, the inner side surface of the overturning platform is simultaneously used as a template of the prefabricated box culvert and is used for directly pouring the prefabricated box culvert on the overturning platform;
In the optional scheme, or the lifting lugs are arranged on the templates of the prefabricated box culvert, and when the prefabricated box culvert and the templates need to be overturned, the prefabricated box culvert and the templates are integrally hoisted on the overturning platform.
in the preferred scheme, a rotation angle sensor for detecting the rotation angle of the turnover platform is arranged at the position of the rotating shaft.
In the preferred scheme, the pushing end oil paths of the first overturning oil cylinder and the sliding oil cylinder are provided with a throttle valve and a reversing one-way valve group, the pull-back end oil path is provided with a throttle valve, the pushing end oil path and the pull-back end oil path are connected with one end of a reversing valve, and the other end of the reversing valve is connected with a hydraulic pump and an oil return loop;
A pushing end oil path of the second overturning oil cylinder is provided with a throttle valve, the pushing end oil path is connected with one end of a switching valve, and the other end of the switching valve is connected with a hydraulic pump and an oil return loop;
And a corner sensor for detecting the corner of the turnover platform is arranged at the position of the rotating shaft.
The utility model provides a pair of supplementary turning-over device of vertical prefabricated assembled box culvert through the scheme that adopts upset platform cooperation upset hydro-cylinder, can overcome the security problem that utilizes hoisting accessory supplementary upset to exist among the prior art, makes the process of overturning safe and reliable. And is convenient for realizing automatic control.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic view of the structure of the front view before turning over in the present invention.
fig. 2 is a schematic view of the structure of the turned-over main view of the present invention.
Fig. 3 is a right side view of fig. 1.
Fig. 4 is a schematic structural diagram of the middle hydraulic control device of the present invention.
Fig. 5 is a schematic structural diagram of another alternative of the present invention.
Fig. 6 is a schematic structural diagram of another alternative of the present invention.
In the figure: the overturning platform comprises an overturning platform 1, a sliding oil cylinder 2, a sliding seat 3, a lower limiting seat 4, a rotating shaft 5, a rotating seat 6, a first overturning oil cylinder 7, a hoisting device 8, a second rotating supporting plate 9, a second overturning oil cylinder 10, a first groove body 11, a second groove body 12, a prefabricated assembly type box culvert 13, an upper limiting seat 14, a sliding rail 15, a corner sensor 16, a reversing check valve group 17, a throttle valve 18, a reversing valve 19, a switching valve 20, an overflow valve 21, a hydraulic pump 22, a filter 23, a template 24, a first rotating supporting plate 25, a first outer side surface 26 and a second outer side surface 27.
Detailed Description
Example 1:
as shown in fig. 6, the vertical prefabricated assembly type auxiliary turn-over device for the box culvert comprises a turn-over platform 1, wherein the turn-over platform 1 is in an L shape, a rotating shaft 5 is arranged at the turning part at the bottom of the turn-over platform 1, and the rotating shaft 5 is rotatably arranged in a fixed rotating seat 6; the rotating base 6 in this example is fixed on the ground, and the height of the rotating base 6 is set so that the two outer side surfaces of the turning platform 1 are kept horizontal or vertical when contacting with the ground. At least one side of the overturning platform 1 is provided with an overturning oil cylinder for jacking and pulling the overturning platform 1. With the structure, the L-shaped overturning platform 1 can be pushed through the overturning oil cylinder to realize the overturning of the prefabricated box culvert 13.
Example 2:
on the basis of the embodiment 1, as shown in fig. 6, a second rotating support plate 9 is further provided, an end of the second rotating support plate 9 is connected with the rotating shaft 5, and the bottom of the second rotating support plate 9 is hinged with an end of a second overturning oil cylinder 10; the second turnover oil cylinder 10 is positioned in the first groove body 11 below the ground and is hinged with a hinged support at the bottom of the first groove body 11.
The turning device is further provided with a first turning supporting plate 25, the end head of the first turning supporting plate 25 is connected with the rotating shaft 5, and the bottom of the first turning supporting plate 25 is hinged with the end head of the first turning oil cylinder 7. The first overturning oil cylinder 7 is positioned in a second groove body 12 below the ground and is hinged with a hinged support at the bottom of the second groove body 12. According to the scheme, after the prefabricated box culvert 13 meets the strength requirement, the second rotary supporting plate 9 pushes the first outer side surface 26 of the overturning platform 1 to overturn clockwise through the pushing action of the second overturning oil cylinder 10; at the moment, the first overturning oil cylinder 7 performs pushing action to enable the first overturning supporting plate 25 to keep inclined so as to provide support for the overturning platform 1 in the overturning process, the second overturning oil cylinder 10 performs pushing action continuously until the second outer side surface 27 of the overturning platform 1 is contacted with the first overturning supporting plate 25, the second overturning oil cylinder 10 performs pushing action continuously at the moment, the first overturning oil cylinder 7 retracts correspondingly until the overturning platform 1 passes through the balance point position, the first overturning oil cylinder 7 retracts in a backpressure mode, and the overturning operation of the whole overturning platform 1 is completed.
In a preferred scheme, a rotation angle sensor 16 for detecting the rotation angle of the overturning platform 1 is arranged at the position of the rotating shaft 5, and an encoder or a photoelectric sensor is preferably adopted. With this structure, the operation of the second tilt cylinder 10 and the first tilt cylinder 7 is controlled by monitoring the angle of the rotating shaft 5. The control difficulty of the embodiment is larger, but the scheme is very suitable for the overturning operation of the heavy-load prefabricated box culvert 13.
Example 3:
On the basis of the embodiment 1, in a preferable scheme as shown in fig. 2, a first overturning cylinder 7 is arranged on one side of the overturning platform 1, and the end head of the first overturning cylinder 7 is hinged with the overturning platform 1. The structure can be simplified through the scheme, the control program is also simplified, only 1 overturning oil cylinder is adopted for control in the embodiment, the overturning of the overturning platform 1 is realized by controlling the extension and retraction of the first overturning oil cylinder 7, and the overturning device is mainly suitable for overturning operation of the prefabricated assembly type box culvert 13 with light weight.
Example 4:
on the basis of the embodiment 3, in a preferable scheme, a second overturning oil cylinder 10 is arranged on the other side of the overturning platform 1, and a first rotating supporting plate 25 is further arranged, wherein the end of the first rotating supporting plate 25 is connected with the rotating shaft 5, and the bottom of the first rotating supporting plate 25 is hinged with the end of the first overturning oil cylinder 7. By means of the scheme, initial jacking force can be provided for overturning the overturning platform 1 to make up for the situation that the tension of the first overturning oil cylinder 7 is insufficient, namely compared with embodiment 3, the first overturning oil cylinder 7 in the embodiment can be selected to be a model with smaller power and length. In a preferred scheme, a rotation angle sensor 16 for detecting the rotation angle of the overturning platform 1 is arranged at the position of the rotating shaft 5, and an encoder or a photoelectric sensor is preferably adopted. So as to realize better automatic control between the first overturn oil cylinder 7 and the second overturn oil cylinder 10.
Example 5:
On the basis of the embodiment 1, as shown in fig. 1 ~ 3, a first overturning oil cylinder 7 is arranged on one side of the overturning platform 1, a sliding seat 3 sliding along the side wall is arranged on the side wall of the overturning platform 1, and the sliding seat 3 is hinged with the first overturning oil cylinder 7;
The side wall of the overturning platform 1 is also provided with a sliding oil cylinder 2, the sliding oil cylinder 2 in the embodiment is arranged on the second outer side surface 27, and the sliding oil cylinder 2 is connected with the sliding seat 3. According to the scheme, the stress position of the first overturning oil cylinder 7 can be changed, the stress structure of the first overturning oil cylinder 7 can be optimized, for example, the overturning platform 1 is close to the balance point, and the sliding oil cylinder 2 pushes the sliding seat 3 to be located at the position close to the rotating circle center, so that the length of the first overturning oil cylinder 7 is reduced. And at the position of the overturning platform 1 far away from the balance point, the sliding oil cylinder 2 pulls the sliding seat 3 to be positioned at the position far away from the center of the rotating circle, so that the supporting force of the first overturning oil cylinder 7 is improved. Thereby facilitating selection of a shorter length, less powerful first tilt cylinder 7. Because the overlong roll-over cylinder also requires an additional centralizer structure, which increases the complexity of the device.
Preferably, as shown in fig. 3, the sliding seat 3 is slidably connected to the sliding rail 15, the upper limiting seat 14 and the lower limiting seat 4 are disposed at two ends of the sliding rail 15, and the sliding rail 15 is fixedly mounted on the second outer side 27 of the turnover platform 1 through the upper limiting seat 14 and the lower limiting seat 4, so that the sliding seat 3 can slide up and down. The slide rails 15 may be circular slide rails or dovetail slide rails, and generally, the heavier prefabricated box culvert 13 should select dovetail slide rails, and the lighter prefabricated box culvert 13 may select circular slide rails according to the load.
Example 6:
On the basis of the embodiment 5, a preferable scheme is that as shown in fig. 1 ~ 3, a second overturning cylinder 10 is arranged on the other side of the overturning platform 1, a first overturning supporting plate 25 is further arranged, the end of the first overturning supporting plate 25 is connected with the rotating shaft 5, and the bottom of the first overturning supporting plate 25 is hinged with the end of the first overturning cylinder 7, so that an initial jacking force can be provided for overturning the overturning platform 1 to compensate the situation that the first overturning cylinder 7 has insufficient tension, especially the situation that the sliding seat 3 has insufficient tension when approaching the rotating shaft 5.
In a preferred scheme, a rotation angle sensor 16 for detecting the rotation angle of the overturning platform 1 is arranged at the position of the rotating shaft 5. Preferably an encoder or a photosensor is used. So as to realize better automatic control between the first overturning oil cylinder 7 and the second overturning oil cylinder 10.
Example 7:
On the basis of the embodiment 1 ~ 6, a preferable scheme is that as shown in fig. 1, the inner side surface of the overturning platform 1 is simultaneously used as a template of the prefabricated box culvert 13 and is used for directly pouring the prefabricated box culvert 13 on the overturning platform 1.
Example 8:
On the basis of the embodiment 1 ~ 6, an optional scheme is as shown in fig. 5, or a lifting lug is arranged on the template 24 of the prefabricated box culvert 13, and when the prefabricated box culvert 13 and the template 24 need to be turned over, the prefabricated box culvert 13 and the template 24 are integrally lifted on the turning platform 1.
Example 9:
for example 3 ~ 6, a preferable embodiment is shown in fig. 4, in which the first tilt cylinder 7 and the slide cylinder 2 have a throttle valve 18 and a reversing check valve set 17 on the top oil path, the pull-back oil path has a throttle valve, the top oil path and the pull-back oil path are connected to one end of a reversing valve 19, and the other end of the reversing valve 19 is connected to a hydraulic pump 22 and an oil return path, so that the first tilt cylinder 7 can realize back pressure in the push or pull working condition, and speed control can be realized by controlling the reversing check valve set 17, the control oil path of the slide cylinder 2 is the same as the control oil path of the first tilt cylinder 7, and is omitted in fig. 4, and further preferable, displacement sensors are provided between the cylinder bodies and the piston rods of the slide cylinder 2, the first tilt cylinder 7, and the second tilt cylinder 10 to monitor the extension length of the piston rods.
A pushing end oil path of the second overturning oil cylinder 10 is provided with a throttle valve, the pushing end oil path is connected with one end of a switching valve 20, and the other end of the switching valve 20 is connected with a hydraulic pump and an oil return loop; this configuration can simplify the oil path structure, and the switching valve 20 can also control the lowering speed of the roll-over platform 1.
Taking the best solution as an example as shown in fig. 1 ~ 4, explaining the operation mode of the present invention, when the strength of the prefabricated box culvert 13 meets the requirement and needs to be turned over, as shown in fig. 1, the switching valve 20 acts and the hydraulic pump acts to make hydraulic oil enter the pushing end of the second turning cylinder 10, the pushing end in this example is a rodless cavity, the piston rod of the second turning cylinder 10 extends out to make the second rotating support plate 9 rotate around the rotating shaft 5, the turning platform 1 rotates along with it, the reversing valve 19 in the oil path of the first turning cylinder 7 acts simultaneously, the reversing check valve group 17 is in the one-way oil outlet position at this time, the hydraulic oil enters the pull-back end of the first turning cylinder 7, the pull-back end in this example is a rod cavity, the piston rod of the first turning cylinder 7 retracts, the piston rod of the sliding cylinder 2 retracts, the sliding seat 3 simultaneously slides upwards, the rotation angle sensor 16 monitors the rotation angle of the rotating shaft 5 to make the action coordination of each cylinder consistent, when the turning platform 1 exceeds the balance point, that the first turning platform 1 starts to turn in the direction of the drawing of the first turning cylinder 7, the direction of the sliding seat 3 slides upwards, the hydraulic pump controls the speed of the hydraulic pump to be reduced, the speed of the hydraulic pump 17, the turning platform 18, the turning cylinder 17 is controlled by the speed, and the speed of the turning cylinder 22, the turning platform 1 is controlled by the hydraulic pump, the.
after the prefabricated box culvert 13 is hung away from the overturning platform 1, the piston rods of the first overturning oil cylinder 7 and the sliding oil cylinder 2 extend out to enable the overturning platform 1 to overturn again, and when the overturning platform 1 is contacted with the second rotating supporting plate 9, the piston rod of the second overturning oil cylinder 10 retracts slowly. The turn-over platform 1 is ready for the next operation.
the above-mentioned embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and technical features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (10)
1. The utility model provides a supplementary turning-over device of vertical prefabricated assembled box culvert, characterized by: the turnover platform comprises a turnover platform (1), wherein the turnover platform (1) is L-shaped, a rotating shaft (5) is arranged at the turning part at the bottom of the turnover platform (1), and the rotating shaft (5) is rotatably arranged in a fixed rotating seat (6);
At least one side of the turnover platform (1) is provided with a turnover oil cylinder for jacking and pulling the turnover platform (1).
2. the vertical prefabricated assembly type box culvert auxiliary turnover device as claimed in claim 1, wherein the vertical prefabricated assembly type box culvert auxiliary turnover device is characterized in that: a second rotating supporting plate (9) is further arranged, the end of the second rotating supporting plate (9) is connected with the rotating shaft (5), and the bottom of the second rotating supporting plate (9) is hinged with the end of a second overturning oil cylinder (10);
The turning device is also provided with a first turning supporting plate (25), the end of the first turning supporting plate (25) is connected with the rotating shaft (5), and the bottom of the first turning supporting plate (25) is hinged with the end of the first turning oil cylinder (7).
3. the vertical prefabricated assembly type box culvert auxiliary turnover device as claimed in claim 1, wherein the vertical prefabricated assembly type box culvert auxiliary turnover device is characterized in that: a first overturning oil cylinder (7) is arranged on one side of the overturning platform (1), and the end of the first overturning oil cylinder (7) is hinged with the overturning platform (1).
4. The vertical prefabricated assembly type box culvert auxiliary turnover device as claimed in claim 3, wherein the vertical prefabricated assembly type box culvert auxiliary turnover device is characterized in that: a second overturning oil cylinder (10) and a first rotating supporting plate (25) are arranged on the other side of the overturning platform (1), the end of the first rotating supporting plate (25) is connected with the rotating shaft (5), and the bottom of the first rotating supporting plate (25) is hinged with the end of the first overturning oil cylinder (7).
5. The vertical prefabricated assembly type box culvert auxiliary turnover device as claimed in claim 1, wherein the vertical prefabricated assembly type box culvert auxiliary turnover device is characterized in that: a first overturning oil cylinder (7) is arranged on one side of the overturning platform (1), a sliding seat (3) sliding along the side wall is arranged on the side wall of the overturning platform (1), and the sliding seat (3) is hinged with the first overturning oil cylinder (7);
The side wall of the overturning platform (1) is also provided with a sliding oil cylinder (2), and the sliding oil cylinder (2) is connected with the sliding seat (3).
6. The vertical prefabricated assembly type box culvert auxiliary turnover device as claimed in claim 5, wherein the vertical prefabricated assembly type box culvert auxiliary turnover device is characterized in that: the sliding seat (3) is connected with the sliding rail (15) in a sliding mode, and the upper limiting seat (14) and the lower limiting seat (4) are arranged at the two ends of the sliding rail (15).
7. The vertical prefabricated assembly type box culvert auxiliary turnover device as claimed in claim 5, wherein the vertical prefabricated assembly type box culvert auxiliary turnover device is characterized in that: a second overturning oil cylinder (10) and a first rotating supporting plate (25) are arranged on the other side of the overturning platform (1), the end of the first rotating supporting plate (25) is connected with the rotating shaft (5), and the bottom of the first rotating supporting plate (25) is hinged with the end of the first overturning oil cylinder (7).
8. The vertical prefabricated assembly type box culvert auxiliary turnover device according to any one of claims 1 ~ 7, wherein the inner side surface of the turnover platform (1) is simultaneously used as a template of the prefabricated assembly type box culvert (13) and is used for directly pouring the prefabricated assembly type box culvert (13) on the turnover platform (1);
Or lifting lugs are arranged on the templates (24) of the prefabricated box culverts (13), and when the prefabricated box culverts (13) and the templates (24) need to be integrally lifted on the overturning platform (1).
9. the vertical prefabricated assembly type box culvert auxiliary turnover device as claimed in any one of claims 1 ~ 7, wherein a rotation angle sensor (16) for detecting the rotation angle of the turnover platform (1) is arranged at the position of the rotating shaft (5).
10. The vertical prefabricated assembly type box culvert auxiliary turnover device as claimed in claim 7, wherein the vertical prefabricated assembly type box culvert auxiliary turnover device is characterized in that: the pushing end oil paths of the first overturning oil cylinder (7) and the sliding oil cylinder (2) are provided with a throttle valve (18) and a reversing check valve set (17), the pull-back end oil path is provided with a throttle valve, the pushing end oil path and the pull-back end oil path are connected with one end of a reversing valve (19), and the other end of the reversing valve (19) is connected with a hydraulic pump (22) and an oil return loop;
A pushing end oil path of the second turnover oil cylinder (10) is provided with a throttle valve, the pushing end oil path is connected with one end of a switching valve (20), and the other end of the switching valve (20) is connected with a hydraulic pump and an oil return loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920386608.0U CN209794149U (en) | 2019-03-26 | 2019-03-26 | Vertical prefabricated assembled box culvert auxiliary turnover device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920386608.0U CN209794149U (en) | 2019-03-26 | 2019-03-26 | Vertical prefabricated assembled box culvert auxiliary turnover device |
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| CN209794149U true CN209794149U (en) | 2019-12-17 |
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| CN201920386608.0U Active CN209794149U (en) | 2019-03-26 | 2019-03-26 | Vertical prefabricated assembled box culvert auxiliary turnover device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109928179A (en) * | 2019-03-26 | 2019-06-25 | 中交第二航务工程局有限公司 | Vertical prefabricated assembled box culvert auxiliary turning-over device and installation method |
| CN112277129A (en) * | 2020-11-26 | 2021-01-29 | 杨秀海 | Automatic overturning and conveying device for rectangular prefabricated part |
| CN114131751A (en) * | 2021-12-16 | 2022-03-04 | 中交第一航务工程局有限公司 | Corner protection device for prefabricated slab posture conversion and construction method thereof |
-
2019
- 2019-03-26 CN CN201920386608.0U patent/CN209794149U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109928179A (en) * | 2019-03-26 | 2019-06-25 | 中交第二航务工程局有限公司 | Vertical prefabricated assembled box culvert auxiliary turning-over device and installation method |
| CN112277129A (en) * | 2020-11-26 | 2021-01-29 | 杨秀海 | Automatic overturning and conveying device for rectangular prefabricated part |
| CN114131751A (en) * | 2021-12-16 | 2022-03-04 | 中交第一航务工程局有限公司 | Corner protection device for prefabricated slab posture conversion and construction method thereof |
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Effective date of registration: 20210323 Address after: 116000 1 / F, no.38-7-1, Jinyao Road, Dalian Economic and Technological Development Zone, Dalian pilot Free Trade Zone, Liaoning Province Patentee after: CCCC SHEC MUNICIPAL CONSTRUCTION Co.,Ltd. Address before: No.11, Dongxihu Road, Jinyinhu District, Wuhan City, Hubei Province Patentee before: The Second Harbor Engineering Co. Patentee before: CCCC SHEC MUNICIPAL CONSTRUCTION Co.,Ltd. |