CN109653394B - Unidirectional rotation type mechanical energy dissipater for large-scale civil structure - Google Patents

Unidirectional rotation type mechanical energy dissipater for large-scale civil structure Download PDF

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Publication number
CN109653394B
CN109653394B CN201910052321.9A CN201910052321A CN109653394B CN 109653394 B CN109653394 B CN 109653394B CN 201910052321 A CN201910052321 A CN 201910052321A CN 109653394 B CN109653394 B CN 109653394B
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China
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component
force transmission
energy
movable
force
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CN201910052321.9A
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CN109653394A (en
Inventor
张帅军
姚士磊
熊炎林
邵阳
何伟
杨泽平
白中坤
屈永平
种玉配
吕瑞虎
刘银涛
刘小辉
李文俊
杨效广
韦龙灿
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CRTG Survey and Design Institute Co Ltd
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CRTG Survey and Design Institute Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings

Abstract

The invention discloses a unidirectional rotary mechanical energy dissipater for a large civil structure, which comprises an energy dissipation component, a force transmission component, a movable component and a fixed component, wherein the energy dissipation component is arranged on the movable component; the energy dissipation component and the force transmission component are both cylindrical shells, the force transmission component is coaxially sleeved in the energy dissipation component, and a sliding connecting piece is arranged between the energy dissipation component and the force transmission component; the movable component and the fixed component are both columnar bodies, one ends of the movable component and the fixed component are respectively and correspondingly arranged in the two ends of the force transmission component, and the outer ends of the movable component and the fixed component are used for being connected with an external large civil structure; the movable component is used for moving axially close to or far from the fixed component when being subjected to external force, and further driving the force transmission component and the energy consumption component to rotate; when the destructive external force disappears or reverses, the movable component stops moving or rotates reversely, and then the force transmission component and the energy consumption component are driven to rotate relatively. The energy dissipater can be repeatedly used, and energy dissipation indexes are not affected by temperature.

Description

Unidirectional rotation type mechanical energy dissipater for large-scale civil structure
Technical Field
The invention belongs to the technical field of civil engineering structure safety, and particularly relates to a unidirectional rotary mechanical energy dissipater for a large civil structure.
Background
Large civil structures such as tall buildings, bridges and the like can be damaged to a certain extent and even collapse under the action of adverse factors such as wind load, vehicle load, earthquake and the like. In order to increase the safety and durability of structures, energy consuming devices are widely used in the civil engineering field.
Currently, the more widely used energy consuming devices are metal energy consumers and viscous dampers. However, its drawbacks are also gradually emerging in engineering practice. Although the metal energy dissipater has a simple structure and low cost, the metal energy dissipater is damaged once and cannot be reused when being used, and the energy dissipation index is difficult to evaluate. This greatly increases the cost of repeated installation and the waste of metal material. Although the viscous damper can be repeatedly used and energy consumption indexes are easy to evaluate, the viscous damper is complex in structure and high in cost, the viscosity of the silicone grease in the viscous damper is easily influenced by temperature, the energy consumption indexes are greatly fluctuated, and the silicone grease is easily leaked due to aging of an inner sealing ring, so that the damper fails. Therefore, a mechanical energy dissipater is provided to solve the current contradiction.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a unidirectional rotation type mechanical energy dissipater for large civil structure, which can be repeatedly used, has energy dissipation indexes not affected by temperature, and is stable and reliable; the defects of a metal energy dissipater and a viscous damper are overcome.
In order to solve the technical problems, the invention adopts the technical scheme that the unidirectional rotary mechanical energy dissipater for the large civil structure comprises an energy dissipation component, a force transmission component, a movable component and a fixed component; the energy dissipation component and the force transmission component are both cylindrical shells, the force transmission component is coaxially sleeved in the energy dissipation component, and a sliding connecting piece is arranged between the energy dissipation component and the force transmission component; the movable component and the fixed component are both columnar bodies, one ends of the movable component and the fixed component are respectively and correspondingly arranged in the two ends of the force transmission component, and the outer ends of the movable component and the fixed component are used for being connected with an external large civil structure; the movable component is used for moving axially close to or far from the fixed component when being subjected to external force, and further driving the force transmission component and the energy consumption component to rotate; when the destructive external force disappears or reverses, the movable component stops moving or rotates reversely, and then the force transmission component and the energy consumption component are driven to rotate relatively.
Furthermore, a plurality of arc-shaped second clamping grooves are annularly distributed and arranged at intervals on the outer wall of the middle part of the force transmission component, and a plurality of sliding grooves are formed on the inner wall of the middle part of the energy consumption component corresponding to the second clamping grooves; the length of the sliding groove is greater than that of the second clamping groove, the corresponding second clamping groove and the corresponding sliding groove form a sliding groove for installing the force transmission blocks, and each force transmission block slides in the corresponding sliding groove; the force transfer block is in a cone frustum shape, the large head end of the force transfer block is positioned in the second clamping groove, the small head end of the force transfer block is positioned in the sliding groove, a first spring is arranged between the side wall of the small head end and the bottom of the second clamping groove, and the bottom surface of the sliding groove is an arc inclined surface and is consistent with the side wall surface of the force transfer block in shape.
Furthermore, the inner wall of one end of the force transmission component and the outer wall of the end part of the movable component are respectively provided with a helical gear transmission mechanism which is meshed with each other, and the helical gear transmission mechanism is used for converting the linear motion of the movable component into the rotation of the force transmission component.
Furthermore, an inner annular groove is arranged on the inner wall surface of one end of the force transmission component, which is connected with the fixed component, around the circumference of the inner wall surface; an outer annular groove is formed on the outer wall surface of the fixing component around the periphery of the fixing component, the inner annular groove and the outer annular groove jointly form an installation cavity for installing the clamping block, and the force transmission component and the fixing component can be connected in a relative rotating mode through the clamping block.
Furthermore, the clamping block is of a multi-section structure, and a second spring is arranged between each section and the outer annular groove.
Furthermore, the outer wall surfaces at the two ends of the force transmission component are both provided with bulges in the circumferential direction; the inner wall surfaces at two ends of the energy dissipation component are all provided with grooves in the circumferential direction, the position shapes of the bulges and the corresponding grooves correspond, and the bulges and the grooves can rotate relatively.
Further, the outer ends of the movable member and the fixed member are provided with pull rings for connecting the large civil structure.
The invention also discloses a method for dissipating energy of a civil structure, and the unidirectional rotary mechanical energy dissipater for the large civil structure is specifically as follows: the outer ends of the fixed member and the movable member are respectively hinged on two parts of the civil structure which move relatively; under the action of destructive external force, the movable component moves close to or away from the fixed component in the axial direction; the movable component drives the force transmission component to rotate, the force transmission block pushes the energy consumption component to rotate in the same direction, and destructive external force is converted into the rotational kinetic energy of the energy consumption component; when destructive external force disappears or is reversed, the force transmission component stops moving or rotates reversely, relative rotation motion is generated between the force transmission component and the energy consumption component, and finally the energy consumption component stops rotating under the action of friction force between the energy consumption component and the force transmission component.
The invention relates to a unidirectional rotation type mechanical energy dissipater for a large civil structure, which has the following advantages: 1. the energy dissipation component can be repeatedly used and has good durability. 2. The energy consumption index is not influenced by temperature and is stable and reliable. 3. The defects of a metal energy dissipater and a viscous damper are overcome.
Drawings
FIG. 1 is a schematic diagram of the construction of the energy consumer of the present invention;
FIG. 2 is a cross-sectional view of the energy consumer of the present invention taken at n-n;
fig. 3 is an enlarged view at a in fig. 2;
FIG. 4 is a cross-sectional view of an energy dissipating member according to the present invention;
FIG. 5 is a longitudinal cross-sectional view of an energy dissipating member of the present invention;
FIG. 6 is a transverse cross-section of a force transfer member according to the invention;
FIG. 7 is a longitudinal cross-section of a force transfer member according to the invention;
FIG. 8 is a schematic view of the movable member of the present invention;
FIG. 9 is a schematic view of the structure of the fixing member in the present invention;
FIG. 10 is a schematic view of the force transfer block of the present invention in a different configuration;
10a, a structural schematic diagram of a force transfer block in an opening state;
10b, a structural schematic diagram of the force transfer block in a closed state;
wherein: 1. an energy consuming component; 2. a force transfer member; 3. a movable member; 4. a force transfer block; 5. a first spring; 6. a fixing member; 7. an outer annular groove; 8. a clamping block; 9 a second spring;
1-1, a chute; 1-2, a groove; 2-1. a second card slot; 2-2, inner annular grooves; 2-3, convex; 3-1, a helical gear transmission mechanism; 3-2, a pull ring.
Detailed Description
The invention relates to a unidirectional rotation type mechanical energy consumption device for a large civil structure, which is explained in detail with the attached drawings and the detailed description, as shown in figures 1, 2 and 3, and comprises an energy consumption component 1, a force transmission component 2, a movable component 3 and a fixed component 6; the energy dissipation component 1 and the force transmission component 2 are both cylindrical shells, the force transmission component 2 is coaxially sleeved in the energy dissipation component 1, and a sliding connecting piece is arranged between the energy dissipation component 1 and the force transmission component 2; the movable member 3 and the fixed member 6 are both columnar bodies, one ends of the movable member 3 and the fixed member 6 are respectively and correspondingly arranged in the two ends of the force transmission member 2, and the outer end parts of the movable member 3 and the fixed member 6 are used for being connected with an external large-scale civil structure; the movable component 3 is used for moving axially close to or far from the fixed component 6 when being subjected to external force, and further driving the force transmission component 2 and the energy consumption component 1 to rotate; when the destructive external force disappears or reverses, the movable component 3 stops moving or rotates reversely, and then the force transmission component 2 and the energy consumption component 1 are driven to rotate relatively. In the design stage of the large civil structure, a design unit can give the maximum displacement distance between the relative moving parts, and the energy dissipater in the invention determines the distance between the movable member 3 and the fixed member 6 according to the maximum displacement distance, so that the movable member 3 can not impact the fixed member 6 to cause damage. In the design stage of the large civil structure, the design unit can give the maximum displacement distance between the relative moving parts, and the energy dissipater in the invention determines the distance between the movable member 3 and the fixed member 6 according to the maximum displacement distance, so as to ensure that the movable member 3 can not impact the fixed member 6 to cause damage.
As shown in fig. 4, 5, 6 and 7, a plurality of arc-shaped second clamping grooves 2-1 are annularly distributed and arranged at intervals on the outer wall of the middle part of the force transmission component 2, and a plurality of sliding grooves 1-1 are arranged on the inner wall of the middle part of the energy consumption component 1 corresponding to the second clamping grooves 2-1; the length of the sliding groove 1-1 is greater than that of the second clamping groove 2-1, the corresponding second clamping groove 2-1 and the corresponding sliding groove 1-1 jointly form a sliding groove for installing the force transmission blocks 4, and each force transmission block 4 slides in the corresponding sliding groove; the force transfer block 4 is in a cone frustum shape, the large end of the force transfer block 4 is positioned in the second clamping groove 2-1, the small end of the force transfer block is positioned in the sliding groove 1-1, a first spring 5 is arranged between the side wall of the small end and the bottom of the second clamping groove 2-1, and the bottom surface of the sliding groove 1-1 is an arc-shaped inclined surface and is consistent with the shape of the side wall surface of the force transfer block 4.
When the corresponding second clamping groove 2-1 and the corresponding sliding groove 1-1 correspond to each other in position, the force transmission block 4 is positioned in the corresponding second clamping groove 2-1 and the corresponding sliding groove 1-1; when the corresponding second clamping grooves 2-1 and the sliding grooves 1-1 are staggered, the force transmission blocks 4 are positioned in the corresponding second clamping grooves 2-1.
As shown in fig. 8, the inner wall of one end of the force transmission member 2 and the outer wall of the end of the movable member 3 are both provided with a helical gear transmission mechanism 3-1 which is engaged with each other, and the helical gear transmission mechanism 3-1 is used for converting the linear motion of the movable member 3 into the rotation of the force transmission member 2. The helical gear transmission mechanism 3-1 selects a helical gear. The principle of the helical gear is adopted to realize the meshing and the movement of the helical gear and the gear.
As shown in fig. 9, an inner annular groove 2-2 is formed on the inner wall surface of one end of the force transmission member 2 connected with the fixing member 6 around the circumference thereof; an outer annular groove 7 is formed around the periphery of the outer wall surface of the fixing component 6, the inner annular groove 2-2 and the outer annular groove 7 jointly form an installation cavity for installing a clamping block 8, and the force transmission component 2 and the fixing component 6 can be connected in a relative rotating mode through the clamping block 8.
The clamping block 8 is of a multi-section structure, and a second spring 9 is arranged between each section and the outer annular groove 7. Namely, the holding block 8 is fan-shaped. During assembly, the fixing member 6 is sleeved in the force transmission member 2, and when the clamping block 8 passes through the position of the inner annular groove 2-2, the clamping block 8 is ejected out of the outer annular groove 7, and the outer end part of the clamping block is positioned in the inner annular groove 2-2. Each holding block 8 is mounted in the corresponding outer annular groove 7 by a second spring 9. The number of the clamping blocks 8 can be 4, so that all movement of the force transmission component 2 except axial rotation can be limited.
In order to avoid the movement of the energy consumption component 1 in the axial direction, bulges 2-3 are annularly arranged on the outer wall surfaces of the two ends of the force transmission component 2; grooves 1-2 are circumferentially formed in the inner wall surfaces of two ends of the energy dissipation component 1, the positions of the bulges 2-3 correspond to the positions of the grooves 1-2, and the bulges and the grooves can rotate relatively.
Because the outer ends of the movable member 3 and the fixed member 6 are provided with pull rings 3-2 for connection of the large civil structure when in use. For articulation with external civil structures.
The invention also discloses a method for dissipating energy of a civil structure, and the unidirectional rotary mechanical energy dissipater for the large civil structure is used, and comprises the following specific steps: the outer ends of the fixed member 6 and the movable member 3 are respectively hinged to two parts of the civil structure which move relatively; the mobile element 3 moves axially towards or away from the fixed element 6 under the action of destructive external forces; the movable component 3 drives the force transmission component 2 to rotate, when the small end of the force transmission block 4 is abutted against the side wall of the front end of the chute 1-1, the force transmission block 4 is defined as being in an open state at the moment, as shown in 10a in fig. 10, the force transmission block 4 pushes the energy consumption component 1 to rotate in the same direction, and destructive external force is converted into rotational kinetic energy of the energy consumption component 1;
when destructive external force disappears or is reversed, the force transmission component 2 stops moving or rotates reversely, relative rotation motion is generated between the force transmission component 2 and the energy consumption component 1, at the moment, the energy consumption component 1 continuously rotates under the action of inertia, and friction force is generated between the energy consumption component 1 and the force transmission component 2; as shown in fig. 10b, the force transmission block 4 is in a closed state, and does not transmit torque to the energy consumption member 1, i.e. does not drive the energy consumption member 1 to rotate reversely. Finally, the energy consumption component 1 stops rotating under the action of the friction force between the energy consumption component 1 and the force transmission component 2.
Therefore, the energy consumption component 1 rotates in a single direction, and the damage of the rotation potential energy of the energy consumption component 1 to the internal structure is avoided. Thereby ensuring the reusability and durability of the energy dissipater.

Claims (6)

1. A unidirectional rotation type mechanical energy dissipater for large civil structures is characterized by comprising an energy dissipation component (1), a force transmission component (2), a movable component (3) and a fixed component (6); the energy dissipation component (1) and the force transmission component (2) are both cylindrical shells, the force transmission component (2) is coaxially sleeved in the energy dissipation component (1), and a sliding connecting piece is arranged between the energy dissipation component (1) and the force transmission component (2);
the movable component (3) and the fixed component (6) are both columnar bodies, one ends of the movable component and the fixed component are respectively and correspondingly installed in the two ends of the force transmission component (2), and the outer end parts of the movable component (3) and the fixed component (6) are used for being connected with an external large civil structure;
the movable component (3) is used for moving axially close to or far from the fixed component (6) when being subjected to external force, and further driving the force transmission component (2) and the energy consumption component (1) to rotate; when the destructive external force disappears or reverses, the movable component (3) stops moving or rotates reversely, and then the force transmission component (2) and the energy consumption component (1) are driven to rotate relatively;
a plurality of arc-shaped second clamping grooves (2-1) are annularly distributed and arranged at intervals on the outer wall of the middle part of the force transmission component (2), and a plurality of sliding grooves (1-1) are arranged on the inner wall of the middle part of the energy consumption component (1) corresponding to the second clamping grooves (2-1); the length of the sliding groove (1-1) is greater than that of the second clamping groove (2-1), the corresponding second clamping groove (2-1) and the corresponding sliding groove (1-1) jointly form a sliding groove for installing the force transmission blocks (4), and each force transmission block (4) slides in the corresponding sliding groove;
the force transfer block (4) is in a cone frustum shape, the large head end of the force transfer block (4) is positioned in the second clamping groove (2-1), the small head end of the force transfer block is positioned in the sliding groove (1-1), a first spring (5) is arranged between the side wall of the small head end and the bottom of the second clamping groove (2-1), the bottom surface of the sliding groove (1-1) is an arc inclined surface, and the shape of the bottom wall surface of the force transfer block (4) is consistent with that of the side wall surface of the force transfer block;
the inner wall of one end of the force transmission component (2) and the outer wall of the end part of the movable component (3) are respectively provided with a helical gear transmission mechanism (3-1) which is meshed with each other, and the helical gear transmission mechanism (3-1) is used for converting the linear motion of the movable component (3) into the rotation of the force transmission component (2).
2. A unidirectional rotation type mechanical damper for large civil structures according to claim 1 characterised in that the inner wall surface of the end of the force transmission member (2) connected to the fixed member (6) is provided with an inner annular groove (2-2) around its circumference; an outer annular groove (7) is formed in the outer wall surface of the fixing component (6) around the periphery of the fixing component, the inner annular groove (2-2) and the outer annular groove (7) jointly form an installation cavity for installing a clamping block (8), and the force transmission component (2) and the fixing component (6) can be connected in a relative rotating mode through the clamping block (8).
3. One-way rotary mechanical consumer for large civil structures, according to claim 2, characterised in that the retaining block (8) is of multi-segment type with a second spring (9) between each segment and the external annular groove (7).
4. A unidirectional rotation type mechanical energy dissipator for large civil structures according to claim 3, characterized in that on the external wall of both ends of the force transmission member (2) there are protrusions (2-3) all around; grooves (1-2) are formed in the inner wall surfaces of two ends of the energy dissipation component (1) in the circumferential direction, the positions and the shapes of the protrusions (2-3) correspond to those of the corresponding grooves (1-2), and the protrusions and the grooves can rotate relatively.
5. A unidirectional rotation type mechanical energy dissipator for large civil structures according to claim 4, characterized in that the outer ends of the movable element (3) and of the fixed element (6) are each provided with a tab (3-2) for the attachment of large civil structures.
6. Method for dissipating energy from civil structures, characterized in that use is made of a unidirectional rotation type mechanical dissipator for large civil structures according to any of claims 1 to 5, in particular as follows: the outer ends of the fixed member (6) and the movable member (3) are respectively hinged on two parts of the civil structure which move relatively; under the action of destructive external force, the movable member (3) moves axially towards or away from the fixed member (6); the movable component (3) drives the force transmission component (2) to rotate, the force transmission block (4) pushes the energy consumption component (1) to rotate in the same direction, and destructive external force is converted into rotational kinetic energy of the energy consumption component (1);
when destructive external force disappears or the destructive external force is reversed, the force transmission component (2) stops moving or rotates reversely, relative rotation motion is generated between the force transmission component (2) and the energy consumption component (1), and finally, the energy consumption component (1) stops rotating under the action of friction force between the energy consumption component (1) and the force transmission component (2).
CN201910052321.9A 2019-01-21 2019-01-21 Unidirectional rotation type mechanical energy dissipater for large-scale civil structure Active CN109653394B (en)

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CN109653394B true CN109653394B (en) 2021-03-16

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* Cited by examiner, † Cited by third party
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JP2002168001A (en) * 2000-11-29 2002-06-11 Akebono Brake Ind Co Ltd Vibration control device for seismically isolated structure
US7661518B2 (en) * 2004-07-27 2010-02-16 Ford Global Technologies, Llc Preventing ratcheting on rockers of a one-way clutch
CN105155708B (en) * 2015-07-10 2017-07-28 同济大学 The viscid mass damper of one kind tuning

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