CN210636429U - Steel protects a section of thick bamboo - Google Patents
Steel protects a section of thick bamboo Download PDFInfo
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- CN210636429U CN210636429U CN201921518363.9U CN201921518363U CN210636429U CN 210636429 U CN210636429 U CN 210636429U CN 201921518363 U CN201921518363 U CN 201921518363U CN 210636429 U CN210636429 U CN 210636429U
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Abstract
The utility model relates to a steel protects a dado construction field, in particular to reduce steel and protect a holistic locking of a section of thick bamboo or abandon risk, solve steel and protect a steel of a quick connect problem and protect a section of thick bamboo. The steel protecting cylinder comprises a cylinder wall, wherein one end of the cylinder wall is a male joint, and the other end of the cylinder wall is a female joint; the male connector is provided with a tenon, and the female connector is provided with a T-shaped groove. The utility model provides a current steel protect a section of thick bamboo have ann tear open inconvenient, the reliability is not high and easy deformation scheduling problem, provide a steel that can high-speed joint protect a section of thick bamboo, adopt socket joint tenon recess form to connect, can twist reverse the clearance and promote the clearance and reduce construction demand torsional force and pull-out power between the steel protects a public female joint in both ends.
Description
Technical Field
The utility model relates to a steel protects a dado construction field, in particular to reduce steel and protect a holistic locking of a section of thick bamboo or abandon risk, solve steel and protect a steel of a quick connect problem and protect a section of thick bamboo.
Background
The steel casing retaining wall is more and more widely applied in the field of geotechnical engineering drilling construction, the connection between the upper steel casing and the lower steel casing is rigid connection at present, once locking or blocking occurs, the driving drilling machine can only be expected to output enough torsional force and pulling force to offset the static friction force of the whole length of the steel casing, so that the power and energy consumption of the driving drilling machine are required to be very high, and the application of the steel casing retaining wall process is severely restricted. In addition, at present, joints between the upper steel casing and the lower steel casing are mostly connected in the forms of threads, bolt connection or L-shaped joints and the like. The threaded connection has low reliability and inconvenient installation and disassembly, and the steel casing is limited to rotate in one direction, so the use is inconvenient; the bolt connection is inconvenient to mount and dismount no matter in a pull type or a press type, a large amount of labor is consumed, and the bolt connection is unsafe; the L-shaped joint can only rotate in one direction, if the L-shaped joint needs to rotate in two directions, the problem of iron adding exists, the reliability is not high, and the L-shaped joint is easy to deform.
Disclosure of Invention
Utility model purpose:
in order to solve the problem, the utility model provides a quick connect's steel protects a section of thick bamboo adopts socket joint tenon recess form to connect, can twist reverse the clearance and promote the clearance and reduce construction demand torsional force and pull-out force between the public female joint in a section of thick bamboo both ends through the steel.
The technical scheme is as follows:
the utility model discloses a realize through following technical scheme:
a steel casing comprises a cylinder wall, wherein one end of the cylinder wall is a male joint, and the other end of the cylinder wall is a female joint; the male connector is provided with a tenon, and the female connector is provided with a T-shaped groove.
Furthermore, the two steel casing cylinders are connected with each other through a tenon of the male connector and a T-shaped groove of the female connector on the other steel casing cylinder.
Further, the outer diameter of the female joint is equal to that of the cylinder wall; the outer diameter of the male connector is matched with the inner diameter of the female connector.
Furthermore, a plurality of convex tenons are uniformly arranged on the outer side wall of the male connector in the circumferential direction and are inserted into the T-shaped grooves.
Furthermore, a T-shaped groove capable of being inserted into the tenon is formed in the inner side wall of the female joint.
Furthermore, the vertical groove communicated with the outer side of the T-shaped groove is perpendicular to the transverse groove on the inner side of the T-shaped groove, and vertical short grooves are formed in two ends of the transverse groove.
Furthermore, a rotating gap is arranged between the vertical short grooves at the two ends, and the length of the transverse groove is greater than the width of the tenon, so that the tenon moves left and right in the transverse groove.
Furthermore, the vertical short groove is provided with a pulling gap for fixing the tenon; the height of the transverse groove plus the height of the pull-up gap is greater than the height of the tenon, so that the tenon can move up and down at two ends of the transverse groove.
Furthermore, the width of the vertical groove is matched with that of the tenon, and the width of the rotating gap is larger than that of the tenon.
The advantages and effects are as follows:
the utility model has the advantages of as follows and beneficial effect:
1. the utility model discloses a section steel protects a joint twists reverse the clearance and plays to pull out the clearance through setting up between the joint, realizes that the segmentation twists reverse and plays to pull out the steel and protects a section of thick bamboo, has reduced the requirement to drive rig torsional force and play to pull out the power, has reduced the requirement to steel protects a wall thickness and material. The construction cost of the steel casing is reduced, the risk of locking or discarding is reduced, and the applicability of the steel casing retaining wall is enlarged.
2. A steel protects a joint, need not plus the bolt, can rotate the high-speed joint that realizes a steel protects a through the socket joint, the ann tears the convenience open, safe and reliable.
Drawings
FIG. 1 is a schematic view of a steel casing according to the present invention;
FIG. 2 is a schematic view of the rotating gap and the pulling gap of the present invention;
FIG. 3 is a schematic view of the normal torsion condition of the present invention;
FIG. 4 is a schematic view of the torsional gap between the sections I and II of the reverse rotation compressor of the present invention;
FIG. 5 is a schematic view of the torsional gap between the sections II and III of the reverse rotation compression of the present invention;
FIG. 6 is a schematic view of the torsional gap between the sections III and IV compressed by the reverse rotation of the present invention;
FIG. 7 is a schematic view of the inter-nodal pull-up gap between the pull-up compression I and II of the present invention;
FIG. 8 is a schematic view of the internode pull-up gap between pull-up compression II and III of the present invention;
FIG. 9 is a schematic view of the inter-nodal pull-up gap between pull-up compression III and IV of the present invention;
FIG. 10 is a schematic view of the whole pulling gap of the pulling compression of the present invention;
description of reference numerals:
1. a cylinder wall; 2. a male connector; 3. a tenon; 4. a female joint; 5. a T-shaped groove; 5-1, vertical grooves; 5-2, transverse grooves; 5-3, vertical short grooves; 5-4, rotating clearance; 5-5, and pulling up the gap.
Detailed Description
Because the traditional steel casing is rigidly connected, and no gap exists between joints, when the machine is stopped and restarted, a drilling machine needs to be driven to output torsional force and pulling force which are greater than the maximum static friction force within the full-depth full-perimeter range of the steel casing, so that the construction needs to be carried out under the conditions of complex geological conditions, ultra-deep steel casing, large-diameter steel casing and the like, and otherwise, the problems of locking and discarding easily occur. In order to solve the problem, the utility model discloses a steel protects a section of thick bamboo and sets up between the male joint at both ends, female joint and twists reverse the clearance and play and pull out the clearance, and a steel protects a section of thick bamboo and twists reverse the clearance and play and pull out the clearance when twisting to pull out and can make full use of. When the steel protective cylinder rotates normally, two adjacent sections of steel protective cylinders can synchronously rotate and lift through the joint connection.
As shown in figure 1, the two ends of the steel casing of the utility model are respectively provided with a male joint 2 and a female joint 4. The outer diameter of the steel casing female joint 4 is the same as the outer diameter of the cylinder wall of the steel casing, a T-shaped groove 5 is arranged on the inner wall of the female joint 4, and the T-shaped groove 5 comprises a vertical groove 5-1 and a transverse groove 5-2. The width of the vertical groove 5-1 is matched with the width of the tenon 3 outside the male connector 2, the width of the middle part of the transverse groove 5-2 is matched with the height of the tenon 3, and the two ends of the transverse groove 5-2 are provided with vertical short grooves 5-3 which are parallel to the vertical groove 5-1. The length of the transverse groove 5-2 is larger than the width of the tenon 3, and the tenon 3 on the outer side wall of the male joint 2 can move left and right in the transverse groove 5-2 on the inner side of the female joint 4 when the steel casing rotates, so that a rotating gap 5-4 is formed; the height of the pull-up gap 5-5 is greater than that of the tenon 3, and the tenon 3 outside the male joint 2 can move up and down at two ends of the transverse groove 5-2 inside the female joint 4 when the steel casing is pulled up, so that the pull-up gap 5-5 is formed.
As shown in figure 2, when adjacent steel casing cylinders are butted, the tenon 3 on the outer side wall of the male joint 2 slides to the transverse groove 5-2 along the vertical groove 5-1 of the T-shaped groove 5 in the female joint 4, and the female joint 4 is rotated to enable the transverse groove 5-2 to be attached to the side wall of the tenon 3, so that the male joint 4 can rotate and lift synchronously.
As shown in fig. 3-6, when torsion or difficult pulling occurs, the driving drilling machine can drive the top section steel casing to reversely twist, compress a rotating gap 5-4 in a joint between the top section steel casing and the secondary top section steel casing, and the secondary top section steel casing is fixed. Therefore, the top section steel casing only rotates in a single section at the beginning of rotation, the driving drilling machine outputs the torsional force only by overcoming the static friction force between the top section steel casing and the peripheral soil body, when the top section steel casing rotates, the maximum static friction force of the peripheral soil body borne by the outside of the top section steel casing is rapidly reduced to the dynamic friction force, and the load of the driving drilling machine is synchronously reduced. And after the rotating gap 5-4 between the top section and the secondary top section steel casing is completely compressed, the tenon 3 and the T-shaped groove 5 in the joint are completely attached to drive the secondary top section and the top section steel casing to synchronously rotate, the secondary top section steel casing continuously compresses the rotating gap 5-4 in the joint between the secondary top section steel casing and the third section steel casing, and the third section steel casing is still. If the top section steel casing rotates once, the drilling machine is driven to output the torsional force only by overcoming the sum of the dynamic friction between the top section steel casing and the peripheral soil mass and the maximum static friction of the peripheral soil mass borne by the secondary top section steel casing, when the secondary top section steel casing rotates, the maximum static friction of the peripheral soil mass borne by the outer part of the secondary top section steel casing is rapidly reduced to the dynamic friction, the drilling machine is driven to synchronously reduce the load, and the third section steel casing is continuously driven to rotate.
By analogy, the torsion subsection starting of the steel casing in the full depth range can be realized through the rotating gap 5-4 in the joint between the adjacent steel casings. Therefore, the maximum required output torque force of the driving drilling machine is only required to be larger than the sum of the rotating friction force borne by all the sleeves above the secondary bottom section and the maximum static friction force borne by the steel casing at the bottom section, and the actual torque force is far smaller than the maximum static friction force borne by the whole length of the steel casing. Therefore, the requirements of the steel casing technology on the torque moment of a driving drilling machine and the wall thickness and the material of the steel casing are greatly reduced, the risk of locking or discarding the steel casing is greatly reduced, and the application range of the steel casing wall protection technology is greatly expanded.
As shown in fig. 7-10, on the same principle as the torsional gap in the joint, there is a pull-up gap 5-5 between the joints of adjacent steel casings, after the steel casings are completely rotated in the forward/reverse directions, the steel casings can be pulled up, and the pull-up gap 5-5 in the joint between the adjacent steel casings can be used to realize the segmented pull-up of the steel casings, so that the actual pull-up force is far less than the maximum static friction force applied to the full length of the steel casing, which further reduces the risk of locking or discarding the steel casing.
As shown in fig. 1, a steel casing comprises a cylinder wall 1, wherein one end of the cylinder wall 1 is a male joint 2, and the other end of the cylinder wall 1 is a female joint 4; the male connector 2 is provided with a tenon 3, and the female connector 4 is provided with a T-shaped groove 5. And the male connector 2 and the female connector 4 are respectively arranged at two ends of the steel casing with the hollow tubular structure and are used for being connected with other steel casings.
Every two steel casings are connected through a tenon 3 of the male connector 2 and a T-shaped groove 5 of the female connector 4 on the other steel casing.
The outer diameter of the female joint 4 is the same as that of the cylinder wall 1; the outer diameter of the male connector 2 is matched with the inner diameter of the female connector 4. Male joint 2 on the steel protects a section of thick bamboo and protects female joint 4 on the section of thick bamboo with another steel and be connected, in order to guarantee to connect, the external diameter of male joint 2 slightly is less than female joint 4 internal diameter for two steel protect a section of thick bamboos and guarantee to connect from top to bottom when butt jointing each other.
A plurality of convex tenons 3 are uniformly arranged on the outer side wall of the male connector 2 in the circumferential direction, and the tenons 3 are inserted into the T-shaped grooves 5.
The inner side wall of the female joint 4 is provided with a T-shaped groove 5 which can be inserted into the tenon 3. As can be seen from figure 2, the tenon 3 is firstly inserted into the vertical groove 5-1 and reaches the horizontal groove 5-2, if the tenon rotates in the same direction, the upper steel casing and the lower steel casing form stable connection, if the tenon rotates reversely, the upper steel casing rotates, and when the tenon 3 reaches the vertical short groove 5-3 at the other end through the rotating gap 5-4, the lower steel casing rotates, so that the steel casing is rotated in a segmented manner, the requirement on the torsional force of a driving drilling machine is reduced, and the applicability of the steel casing retaining wall is expanded.
As shown in figure 2, the T-shaped groove 5 is communicated with the vertical groove 5-1 at the outer side to be vertical to the transverse groove 5-2 at the inner side, and the two ends of the transverse groove 5-2 are provided with vertical short grooves 5-3. The tenon 3 enters the T-shaped groove 5 from the vertical groove 5-1 and can rotate transversely or move up and down on the transverse groove 5-2. It will be seen that the T-shaped groove 5 forms a groove at the junction between the two steel casings, and the tongue 3 moves within the formed groove.
The vertical short grooves 5-3 at the two ends of the transverse groove 5-2 are arranged with a rotating gap 5-4, the length of the transverse groove 5-2 is larger than the width of the tenon 3, so that the tenon 3 moves left and right in the transverse groove 5-2. The turning clearance 5-4 is a space for the tenon 3 to turn right and left in the lateral groove 5-2.
The vertical short groove 5-3 is provided with a pull-out gap 5-5 for fixing the tenon 3; the height of the transverse groove 5-2 plus the height of the pull-up gap 5-5 is greater than the height of the tenon 3, so that the tenon 3 moves up and down at the two ends of the transverse groove 5-2. The height of the transverse groove 5-2 and the rotating clearance 5-4 is more than or equal to that of the tenon 3. The setting of the pull-up gap 5-5 is for the tenon 3 to move up and down.
The width of the vertical groove 5-1 is matched with that of the tenon 3, and the width of the rotating gap 5-4 is larger than that of the tenon 3. The width of the transverse groove 5-2 is equal to the width of the left and right vertical short grooves 5-3 plus the width of the rotating gap 5-4, and the width of the transverse groove 5-2 is also larger than the width of the tenon 3.
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.
The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, the two interconnected steel casings include a cylindrical casing wall 1, one end of the casing wall 1 is a male joint 2, and the other end of the casing wall 1 is a female joint 4; the male connector 2 is provided with a tenon 3, and the female connector 4 is provided with a T-shaped groove 5. The two steel casings are connected through a tenon 3 of the male connector 2 and a T-shaped groove 5 of the female connector 4 on the other steel casing. The outer diameter of the joint is the same as that of the cylinder wall 1; the outer diameter of the male connector 2 is matched with the inner diameter of the female connector 4.
Four convex tenons 3 are evenly arranged on the outer side wall of the male connector 2 in the circumferential direction, and the tenons 3 are inserted into the T-shaped grooves 5. Four T-shaped grooves 5 which can be inserted into the tenons 3 are also arranged on the inner side wall of the female joint 4.
As shown in figure 2, the T-shaped groove 5 is communicated with the vertical groove 5-1 at the outer side to be vertical to the transverse groove 5-2 at the inner side, and the two ends of the transverse groove 5-2 are provided with vertical short grooves 5-3. A rotating gap 5-4 is arranged between the vertical short grooves 5-3 at the two ends, and the length of the transverse groove 5-2 is larger than the width of the tenon 3, so that the tenon 3 moves left and right in the transverse groove 5-2. The vertical short groove 5-3 is provided with a pull-out gap 5-5 for fixing the tenon 3; the height of the transverse groove 5-3 plus the height of the pull-up gap 5-5 is greater than the height of the tenon 3, so that the tenon 3 moves up and down at the two ends of the transverse groove 5-3.
The width of the vertical groove 5-1 is matched with that of the tenon 3, and the length of the horizontal groove 5-2 is greater than that of the tenon 3; the width of the rotating gap 5-4 in the middle of the transverse groove 5-2 is matched with the height of the tenon 3.
The specific implementation method of the steel casing comprises the following steps:
when in use, the two steel casing barrels are connected to connect the tenon 3 with the T-shaped groove 5. And then construction operation is carried out, when the machine is stopped and restarted or the condition that the torsion is difficult occurs, the drilling machine is driven to drive the top section steel casing to reversely twist, a rotating gap 5-4 between the top section steel casing and the secondary top section steel casing is compressed, and the secondary top section steel casing is fixed. The top section steel casing only rotates in a single section at the beginning of rotation, at the moment, the driving drilling machine outputs the torsional force only by overcoming the static friction force between the top section steel casing and the peripheral soil body, when the top section steel casing rotates, the maximum static friction force of the peripheral soil body borne by the outside of the top section steel casing is rapidly reduced to the dynamic friction force, and the load of the driving drilling machine is synchronously reduced. And after the rotating gap 5-4 between the top section and the secondary top section steel casing is completely compressed, namely the tenon 3 and the T-shaped groove 5 in the joint between the two steel casings are completely attached to drive the secondary top section and the top section steel casing to synchronously rotate.
When the steel protective cylinder is difficult to pull out, a pulling-out gap 5-5 exists between the joints of the adjacent steel protective cylinders, the steel protective cylinder can be pulled out upwards after the steel protective cylinder completely rotates in the positive/negative direction, and the steel protective cylinder can be pulled out in a segmented manner by utilizing the pulling-out gap 5-5 in the joint between the two steel protective cylinders, so that the actual pulling-out force is far smaller than the maximum static friction force borne by the whole length of the steel protective cylinder, and the risk of locking or discarding the steel protective cylinder is further reduced.
Example 2
As shown in fig. 3 to 10, four steel casing pipes connected with each other are connected, and each two steel casing pipes are connected through a tenon 3 and a T-shaped groove 5 in the same steel casing pipe structure as that of embodiment 1.
When the steel casing is placed, the adjacent male joint 2 and the female joint 4 of the steel casing are connected in a socket joint mode, so that the outer side tenon 3 of the male joint 2 of the lower section of steel casing is inserted into the inner side T-shaped groove 5 of the female joint 4 of the upper section of steel casing, the steel casing is rotated clockwise by the rotary drilling rig, the tenon 3 and the T-shaped groove 5 are tightly attached together, and the connection operation of the steel casing can be achieved. The steel casing cylinders are sequentially inserted and rotated, and the rotary drilling rig rotates clockwise to drive the four steel casing cylinders to rotate and press down together, as shown in fig. 3.
If the locking phenomenon of the steel casing suddenly occurs after the four sections of steel casings are placed, the rotary drilling rig cannot rotate and pull the steel casing, and the risk of discarding the steel casing is met. The advantages of the torsion gap and the pull-up gap between the middle joints of the utility model are 5-5 can be utilized.
As shown in FIG. 4, firstly, the rotary drilling rig drives the section I steel casing to rotate reversely, and reversely compresses a torsional gap between the section I and the section II to realize the torsion of the section I steel casing.
As shown in FIG. 5, the rotary drilling rig continues to drive the section I steel casing to rotate reversely, and continues to reversely compress torsional gaps between sections II and III, so that the section I steel casing and the section II steel casing are twisted.
By analogy with the above, the rotary drilling rig continues to drive the I sections of steel casing cylinders to rotate reversely, all torsional gaps among joints of all the steel casing cylinders are compressed reversely, four sections of steel casing cylinders rotate in sections, and finally all the steel casing cylinders rotate.
After all the steel pile casings rotate reversely, if the steel pile casings are required to be rotated continuously and pressed downwards to be placed, the steel pile casings can be driven to rotate clockwise after being stopped, torsional gaps among joints of all the steel pile casings are compressed in the forward direction, the steel pile casings rotate clockwise in sections, and all the steel pile casings can rotate in the forward direction.
If the steel casing cannot be pulled up after rotating forward, the steel casing continues to rotate reversely, as shown in fig. 7. And (3) completely reversely compressing the torsion gaps among all the joints of the steel casing, attaching the left side of the tenon 3 and the T-shaped groove 5 together, and starting to pull up the steel casing by using the rotary drilling rig.
As shown in FIG. 8, firstly, the rotary drilling rig pulls out the steel casing with the section I, and compresses a pulling gap between the section I and the section II by 5-5, so that the pulling movement of the steel casing with the section I is realized.
As shown in FIG. 9, the rotary drilling rig continues to pull up the steel casing of section I, and continues to compress the inter-section II and III pull-up gap by 5-5, so as to realize the pull-up movement of the steel casing of section I and section II.
By parity of reasoning, the rotary drilling rig continues to pull up the I sections of steel casing, all the pull-up gaps 5-5 between joints of all the steel casing are completely compressed, four sections of steel casing are pulled up in sections, and finally all the steel casings are pulled up, as shown in fig. 10.
As can be seen from fig. 3 to 7, the tenon 3 moves leftward in sequence from top to bottom, and in fig. 7 to 10, the tenon 3 moves downward in sequence from top to bottom. Fig. 7 shows the vertical short grooves 5-3 with the tenons 3 arranged on the right side, the tenon 3 between the steel casing sections i and ii moves downwards in fig. 8, the tenon 3 between the steel casing sections ii and iii moves downwards in fig. 9, and the tenon 3 between the steel casing sections iii and iv moves downwards in fig. 10.
Claims (9)
1. A steel protects a section of thick bamboo, includes section of thick bamboo wall (1), its characterized in that: one end of the cylinder wall (1) is provided with a male joint (2), and the other end of the cylinder wall (1) is provided with a female joint (4); the male connector (2) is provided with a tenon (3), and the female connector (4) is provided with a T-shaped groove (5).
2. A steel casing according to claim 1, wherein: the two steel casing cylinders are connected through a tenon (3) of the male connector (2) and a T-shaped groove (5) of the female connector (4) on the other steel casing cylinder.
3. A steel casing according to claim 1 or 2, wherein: the outer diameter of the female joint (4) is equal to that of the cylinder wall (1); the outer diameter of the male connector (2) is matched with the inner diameter of the female connector (4).
4. A steel casing according to claim 1, wherein: a plurality of convex tenons (3) are uniformly arranged on the outer side wall of the male connector (2) in the circumferential direction, and the tenons (3) are inserted into the T-shaped grooves (5).
5. A steel casing according to claim 4, wherein: the inner side wall of the female joint (4) is provided with a T-shaped groove (5) which can be inserted into the tenon (3).
6. A steel casing according to claim 1, 2 or 5, wherein: the T-shaped groove (5) is communicated with the vertical groove (5-1) at the outer side to be vertical to the transverse groove (5-2) at the inner side, and the two ends of the transverse groove (5-2) are provided with vertical short grooves (5-3).
7. A steel casing according to claim 6, wherein: a rotating gap (5-4) is arranged between the vertical short grooves (5-3) at the two ends, and the length of the transverse groove (5-2) is larger than the width of the tenon (3), so that the tenon (3) moves left and right in the transverse groove (5-2).
8. A steel casing according to claim 6, wherein: the vertical short groove (5-3) is provided with a pull-out gap (5-5) for fixing the tenon (3); the height of the transverse groove (5-2) and the height of the pull-up gap (5-5) are greater than the height of the tenon (3), so that the tenon (3) moves up and down at two ends of the transverse groove (5-2).
9. A steel casing according to claim 6, wherein: the width of the vertical groove (5-1) is matched with that of the tenon (3), and the width of the rotating gap (5-4) is larger than that of the tenon (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921518363.9U CN210636429U (en) | 2019-09-12 | 2019-09-12 | Steel protects a section of thick bamboo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921518363.9U CN210636429U (en) | 2019-09-12 | 2019-09-12 | Steel protects a section of thick bamboo |
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| Publication Number | Publication Date |
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| CN210636429U true CN210636429U (en) | 2020-05-29 |
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| CN201921518363.9U Active CN210636429U (en) | 2019-09-12 | 2019-09-12 | Steel protects a section of thick bamboo |
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| CN (1) | CN210636429U (en) |
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Effective date of registration: 20201207 Address after: No.604, no.56-39, Huanghe North Street, Huanggu District, Shenyang City, Liaoning Province Patentee after: SHENYANG DIBO BUILDING ENGINEERING Co.,Ltd. Address before: 110122 No. 34 Xingming Street, Shenbei New District, Shenyang City, Liaoning Province Patentee before: Shenyang DIPP intelligent piling machinery technology research and Development Co.,Ltd. |
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| TR01 | Transfer of patent right |