CN113684972B - Self-locking connector and self-locking connection method for steel bars - Google Patents
Self-locking connector and self-locking connection method for steel bars Download PDFInfo
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- CN113684972B CN113684972B CN202110913064.0A CN202110913064A CN113684972B CN 113684972 B CN113684972 B CN 113684972B CN 202110913064 A CN202110913064 A CN 202110913064A CN 113684972 B CN113684972 B CN 113684972B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
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- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention provides a steel bar self-locking connector and a self-locking connection method, wherein the connector comprises a lock cylinder, a lock cylinder and a clamping pin unit, the lock cylinder comprises a first steel bar connection section and a lock cylinder connection section, the lock cylinder connection section is provided with a plurality of clamping pin holes, and each clamping pin hole is matched with one clamping pin unit; the bayonet lock unit comprises a bayonet lock pin, and the bayonet lock pin can move back and forth along a bayonet lock pin hole; the lock cylinder comprises a second steel bar connecting section and a lock cylinder connecting section; the lock cylinder connecting section is of a hollow structure, and one end face of the lock cylinder connecting section, which is far away from the lock cylinder, is open; the inner wall of the lock cylinder connecting section is provided with a plurality of clamping teeth which are arranged along the length direction of the lock cylinder connecting section, and the gaps between the adjacent clamping teeth are matched with the corresponding clamping pins to form a self-locking state. The invention does not need to reserve the reinforcing steel bar with anchoring length, does not depend on grouting material to finish bonding and anchoring, and is convenient for the installation of the precast concrete component; meanwhile, the connection mode is mechanical connection, so that the problems of aging and failure of chemical grouting connection are solved, and the reliability of steel bar connection is improved.
Description
Technical Field
The invention belongs to the technical field of structural engineering, and particularly relates to a self-locking connector and a self-locking connection method for a steel bar.
Background
The building industrialization represents the development direction of the building industry in China, and the assembly structure can realize modernization control and full-automatic production in the construction process, and has good promotion effect on the development of the building industrialization in China. The problem of good steel bar connection is solved to be the key of solving the problem of assembly structure wholeness, and on the basis of guaranteeing the excellent connection performance of joint, more reasonable joint structure and sleeve production technology are researched, so that the cost of steel bar connection joint is reduced, the construction speed is improved, and the method has important significance for the popularization of building industrialization. The traditional steel bar connection mostly adopts mechanical connection methods such as lap joint, welding connection or sleeve extrusion and the like, but the steel bar connection is required to be completed before concrete is poured, so that the traditional steel bar connection method is not suitable for an assembly type construction method of a precast concrete structure.
At present, two types of methods, namely sleeve grouting connection and slurry anchor lap joint connection, are mainly adopted for connecting vertical steel bars between precast concrete components (parts), but the defects exist. Specifically, as for the sleeve grouting connection technique: after vertical steel bars in the upper and lower components are butted in the sleeve, grouting material is poured into the sleeve to form constraint, the transmission of internal force between the steel bars is realized through the grouting material and a cast iron sleeve wrapping the grouting material, and indirect force transmission (the mechanical property of a connecting part is not easy to guarantee); the grout anchor lap joint is relatively low in cost, but in order to meet the technical requirements of specifications on the steel bar lap joint, the length of the steel bar reserved at the top of the lower component is larger, the hole with the same length is reserved at the bottom of the upper component corresponding to the steel bar reserved at the top of the lower component, and the steel bar of the lower component is inserted into the hole at the bottom of the upper component and then grouted to realize the steel bar connection.
Disclosure of Invention
The invention aims to provide a steel bar self-locking connector and a self-locking connection method, the connector does not need to reserve steel bars with anchoring length, does not depend on grouting materials to complete bonding and anchoring, and is convenient for the installation of precast concrete components; meanwhile, the connection mode is mechanical connection, so that the problems of ageing and failure of chemical grouting connection are solved, and the reliability of steel bar connection is improved. In order to achieve the purpose, the invention adopts the following technical scheme:
a rebar self-locking connector, comprising:
the lock core comprises a first steel bar connecting section and a lock cylinder connecting section, the first steel bar connecting section is in threaded connection with a steel bar, the lock cylinder connecting section is provided with a plurality of clamping pin holes, and each clamping pin hole is matched with a clamping pin unit; the bayonet unit comprises a bayonet pin which can move back and forth along a bayonet pin hole;
the lock cylinder comprises a second steel bar connecting section and a lock cylinder connecting section, the second steel bar connecting section is in threaded connection with another steel bar, the lock cylinder connecting section is used for installing the lock cylinder connecting section, the lock cylinder connecting section is of a hollow structure, and one end face, far away from the lock cylinder, of the lock cylinder connecting section is open; the inner wall of the lock cylinder connecting section is provided with a plurality of clamping teeth which are arranged along the length direction of the lock cylinder connecting section, and gaps between every two adjacent clamping teeth are matched with the corresponding clamping pins to form a self-locking state.
Preferably, the bayonet unit further comprises a bayonet bin clamped in one of the bayonet holes, and the bayonet bin comprises a first connecting plate, a second connecting plate and a third connecting plate which are connected in sequence; a bin partition plate is arranged between the first connecting plate and the third connecting plate, and the bayonet pins are connected with the bin partition plate through springs; one side face of the clamping pin is in contact with the first connecting plate, and the other side face of the clamping pin is in contact with the third connecting plate.
Preferably, a guide rod is arranged on one side, close to the spring, of the bayonet, and the spring is sleeved and fixed on the guide rod.
Preferably, the bayonet nail comprises a clamping block, the clamping block is in contact with the first connecting plate and the third connecting plate, a connecting part is arranged on one side of the clamping block, which is far away from the bin partition plate, and the connecting part is in clearance fit with the adjacent clamping teeth;
the connecting part comprises an extrusion surface, a locking surface and an occlusion surface which are sequentially connected, and the extrusion surface is connected with the part of the fixture block contacting the first connecting plate; the extrusion surface is an arc surface; the locking surface is a plane and is matched with the inner wall of the gap; the occlusal surface is an inclined surface inclined towards the lock cylinder and matched with the corresponding latch.
Preferably, an inner barrier strip used for limiting the clamping block is arranged at the tail end of the third connecting plate, and a preset angle is formed between the inner barrier strip and the third connecting plate.
Preferably, the lock core further comprises a first transition section, and the first steel bar connection section, the first transition section and the lock cylinder connection section are sequentially connected; the connecting end of the first transition section and the lock cylinder connecting section is a joint plane; and when the lock is in a self-locking state, the attaching plane is attached to the opening end of the lock cylinder connecting section.
Preferably, the lock cylinder further comprises a second transition section, and the second steel bar connecting section, the second transition section and the lock cylinder connecting section are connected in sequence.
A steel bar self-locking connection method is based on the steel bar self-locking connector and comprises the following steps:
s1, installing the steel bars of the two precast concrete members: installing the steel bars of the first precast concrete component at the first steel bar connecting section of the lock cylinder, and installing the steel bars of the second precast concrete component at the second steel bar connecting section of the lock cylinder;
s2, pouring the first steel bar connecting section of the lock cylinder into a first precast concrete member, and integrally pouring the lock cylinder into a second precast concrete member; after pouring is finished, the lock cylinder connecting section of the lock cylinder is exposed out of the joint surface of the first precast concrete component, and the open end of the lock cylinder is flush with the joint surface of the second precast concrete component;
s3, self-locking and connecting two precast concrete members: the lock cylinder connecting section of the lock cylinder is inserted into the lock cylinder connecting section of the lock cylinder, the bayonet pin moves along the bayonet hole in the inserting process, and when the bayonet pin moves to a gap between the adjacent bayonet teeth, the bayonet pin is in clearance fit with the gap to form a self-locking state, and finally the first precast concrete member and the second precast concrete member are connected.
Compared with the prior art, the invention has the advantages that:
(1) the connector does not need to reserve reinforcing steel bars with anchoring length, does not depend on grouting materials to complete bonding and anchoring, and facilitates installation of precast concrete members. Specifically, when the precast concrete member is installed, the lock cylinder is accurately inserted into the lock cylinder, and the clamping pin is automatically ejected by the spring, so that self-locking connection is realized.
(2) The connection mode is mechanical connection, so that the problems of aging and failure of chemical grouting connection are solved, and the reliability of steel bar connection is improved. Specifically, when the self-locking state, namely the lock cylinder and the lock cylinder are connected in place, the joint plane on the lock cylinder is jointed with the open end on the lock cylinder, and the reliable force transmission of the connector under pressure is ensured.
Drawings
Fig. 1 is a three-dimensional view of a self-locking connector for reinforcing bars according to an embodiment of the present invention;
FIG. 2 is a longitudinal cross-sectional view of the lock cylinder and lock core connection of FIG. 1;
FIG. 3 is a perspective view of the rebar of FIG. 1;
FIG. 4 is a perspective view of the lock cylinder of FIG. 1;
FIG. 5 is a longitudinal section of FIG. 4;
FIG. 6 is an enlarged view of (i) of FIG. 5;
FIG. 7 is a perspective view of the lock cylinder of FIG. 1;
FIG. 8 is a longitudinal cross-sectional view of the lock cylinder of FIG. 7;
FIG. 9 is a longitudinal sectional view of the bayonet unit;
FIG. 10 is a perspective view of the bayonet unit.
Wherein, 1-upper connecting rib; 2-a lock cylinder; 3-a lock cylinder; 4-lower connecting ribs; 5-connecting rib threads;
6-a second steel bar connecting section, 7-a second transition section, 8-a lock core connecting section and 9-a lock cylinder internal thread; 10-locking cylinder wall; 11-latch; 12-latch upper surface; 13-the side surface of the latch; 14-latch lower surface; 15-a lock cylinder connection section; 16-a first transition section; 17-a first rebar junction section; 18-a bayonet unit; 19-a snap pin hole; 20-a bayonet bin; 21-bayonet; 22-bin partition; 23-a spring; 24-a guide rod; 25-occlusal surface; 26-a locking surface; 27-extrusion face; 28-inner barrier strip.
Detailed Description
The present invention will now be described in more detail with reference to the accompanying schematic drawings, in which preferred embodiments of the invention are shown, it being understood that one skilled in the art may modify the invention herein described while still achieving the advantageous effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
As shown in fig. 1-10, a reinforcing bar self-locking connector, includes: the lock comprises an upper connecting rib 1, a lock cylinder 2, a lock core 3, a lower connecting rib 4 and a bayonet unit 18. In other embodiments other than this embodiment, the two reinforcing bars may be arranged side to side.
Specifically, the upper connecting rib 1 is in threaded connection with the lock cylinder 2, the lower connecting rib 4 is in threaded connection with the lock cylinder 3, the lock cylinder 3 is inserted into the lock cylinder 2, and the bayonet 21 is automatically ejected by the spring 23 to realize self-locking connection, as shown in fig. 3. The upper connecting rib 1 and the lower connecting rib 4 are common steel bars to be connected, as shown in fig. 2. The reinforcing bar link prefabricated thread 5 is convenient for be connected with lock cylinder 2 and lock core 3.
The specific structure of the connector is as follows:
the lock core 3 is cylindrical and symmetrical and comprises a first steel bar connecting section 17, a first transition section 16 and a lock cylinder connecting section 15 which are sequentially connected, as shown in figures 7-8. The first steel bar connecting section 17 is prefabricated with internal threads, so that the first steel bar connecting section is conveniently connected with the lower connecting rib 4, the first transition section 16 is conical and transits from the first steel bar connecting section 17 to the lock cylinder connecting section 15, and the connecting end of the first transition section 16 and the lock cylinder connecting section 15 is prefabricated into a joint plane; in a self-locking state, namely when the lock cylinder 2 and the lock cylinder 3 are connected in place, the joint plane is jointed with the opening end of the lock cylinder connecting section 8, so that the connector is ensured to reliably transfer force when being pressed; the lock cylinder connecting section 15 is provided with a plurality of clamping pin holes 19 which are vertically distributed in two directions at intervals, each clamping pin hole 19 is matched with one clamping pin unit 18, namely the size of each clamping pin hole 19 is matched with that of the clamping pin unit 18, so that the clamping pin unit 18 is installed and fastened, and the clamping pin 21 of the clamping pin unit 18 can slide in the clamping pin bin 20. The main body part of the lock core 3 and the bayonet unit 18 are assembled together to form a whole after being respectively manufactured and prefabricated in production. All interfaces of the lock core 3 are in arc transition, so that stress concentration is avoided.
The detent unit 18 includes a detent magazine 20, a spring 23, a magazine partition 22, and a pair of detents 21, as shown in fig. 9 and 10. The card pin 21 is reciprocally movable along the card pin hole 19. Specifically, the bayonet bin 20 is clamped in one of the bayonet holes 19, and the bayonet bin 20 comprises a first connecting plate, a second connecting plate and a third connecting plate which are connected in sequence; the bin partition plate 22 is arranged between the first connecting plate and the third connecting plate, and the bayonet 21 is connected with the bin partition plate 22 through a spring 23; one side surface of the bayonet 21 is contacted with the first connecting plate, and the other side surface is contacted with the third connecting plate; one side of the bayonet 21 close to the spring 23 is provided with a guide rod 24, and the spring 23 is sleeved and fixed on the guide rod 24. Specifically, the bayonet bin 20 and the bin partition plate 22 are both made of thin-walled steel, the bayonet bin 20 is a sliding track of the bayonet pin 21, and the bin partition plate 22 can fix the end of the spring 23 and divide the spaces of the bayonet bin 20 on two sides to avoid the mutual influence of the elasticity of the spring 23. When the bayonet 21 is pressed to slide inward, compressing the spring 23, the guide 24 of the spring 23 can slide inward with the bayonet 21 to the compartment partition 22, and the bayonet 21 can be fully received in the bayonet compartment 20.
The bayonet 21, as shown in fig. 9, includes a fastening block, the fastening block contacts with the first connecting plate and the third connecting plate, a connecting portion is disposed on a side of the fastening block away from the compartment partition 22, the connecting portion is in clearance fit with the adjacent latch 11, and the connecting portion can extend out of the bayonet compartment 20.
The connecting part comprises an extrusion surface 27 (the upper surface of the bayonet nail), a locking surface 26 (the side surface of the bayonet nail) and an occlusion surface 25 (the lower surface of the bayonet nail) which are connected in sequence. The extrusion surface 27 is an arc transition surface and is connected with the part of the clamping block contacting the first connecting plate, so that when the lock cylinder 3 is connected and assembled into the lock cylinder 2, the extrusion surface 27 is extruded by the arc surface of the lower surface 14 of the clamping tooth and is smoothly compressed into the clamping pin bin 20; the locking surface 26 is a plane and is matched with the inner wall of the gap, so that the locking surface is favorably attached to the wall 10 of the lock cylinder without looseness after connection and assembly; the engagement surface 25 is an inclined surface inclined toward the lock cylinder 2 and is matched with the corresponding latch 11 so as to be engaged and fastened with the upper surface 12 of the latch, and the latch 11 and the latch 21 cannot slide and disengage when the connector is vertically pulled. Further, the tail end of the third connecting plate is provided with an inner barrier strip 28 for limiting the fixture block, and a preset angle is formed between the inner barrier strip 28 and the third connecting plate, so that the fixture block is prevented from being popped out.
The lock cylinder 2 is of a cylindrical symmetrical structure and comprises a second steel bar connecting section 6, a second transition section 7 and a lock cylinder connecting section 8 which are sequentially connected, and the lock cylinder connecting section is shown in figures 4-5.
The second steel bar connecting section 6 is provided with internal threads 9 of the prefabricated lock cylinder 2, so that the second steel bar connecting section is conveniently connected with the upper connecting bar 1; the second transition section 7 is conical and is transited from the second steel bar connecting section 6 to the lock core connecting section 8; the lock cylinder connecting section 8 is used for installing the lock cylinder connecting section 15, the lock cylinder connecting section 8 is of a hollow structure, and one end face, far away from the lock cylinder 2, of the lock cylinder connecting section 8 is open; the lock cylinder wall 10 of the lock cylinder connecting section 8 is provided with a plurality of clamping teeth 11 which are axially arranged along the lock cylinder connecting section 8, and gaps between the adjacent clamping teeth 11 are matched with the corresponding clamping pins 21 to form a self-locking state, namely the clamping teeth 11 are convenient to be mutually meshed with the clamping pins 21 arranged on the lock cylinder 3 during connection and assembly. Wherein, the detailed structure of each surface of the latch 11 is as shown in figure 6, the upper surface 12 of the latch inclines towards the lock cylinder wall 10 to be beneficial to being engaged with the latch 21 and fastening the latch 21; the side surface 13 of the latch is flat and straight, so that the latch is favorably attached to the side surface of the lock cylinder 3 without looseness after connection and assembly; the latch lower surface 14 is a circular arc transition from the latch side surface 13 to the wall of the lock cylinder 2, which is beneficial to the smooth compression of the latch pin 21 of the latch unit 18 into the latch chamber 20 by the extrusion of the circular arc surface when the lock cylinder 3 is connected and assembled. And each interface of the lock cylinder 2 is in arc transition, so that stress concentration is avoided.
The connector can be applied to the connection of the reinforcing steel bars in the common building components, and can also be applied to the connection of the reinforcing steel bars at the joint of the components in the fabricated building. In the fabricated building, the steel bars to be connected in the first precast concrete unit and the second precast concrete unit are the upper connecting bar 1 and the lower connecting bar 4 of the present invention.
As will be known to those skilled in the art, precast concrete elements, i.e. standardized concrete elements produced in a factory, are known. During manufacturing, the internal steel bars are fixed and bound at the preset positions in the templates, then concrete is poured, and the templates are removed after maintenance. The self-locking connector for reinforcing bars of the present invention is used with the connected reinforcing bars.
In the fabricated building, the working principle of the steel bar self-locking connector is as follows:
s1, installing the steel bars of the two precast concrete members: and the steel bars (the lower connecting bars 4) of the first precast concrete members are arranged on the first steel bar connecting section 17 of the lock cylinder 3, and the steel bars (the upper connecting bars 1) of the second precast concrete members are arranged on the second steel bar connecting section 6 of the lock cylinder 2.
S2, casting the first steel bar connecting section 17 and the first transition section 16 of the lock cylinder 3 in a first precast concrete member, and casting the lock cylinder 2 in a second precast concrete member integrally; after pouring is finished, the lock cylinder connecting section 15 of the lock cylinder 3 is exposed out of the joint surface of the first precast concrete component, and the open end of the lock cylinder 2 is flush with the joint surface of the second precast concrete component.
S3, connecting two precast concrete members in a self-locking way: the lock cylinder connecting section 15 of the lock cylinder 3 is inserted into the lock cylinder connecting section 8 of the lock cylinder 2, in the inserting process, the pin 21 is extruded by the corresponding latch 11 to slide inwards, so that when the spring 23 is compressed, the guide rod 24 of the spring 23 can slide inwards to the bin partition plate 22 along with the latch pin 21; when the bayonet 21 moves to the gap between the adjacent latches 11, the bayonet 21 is ejected by the spring 23, and the bayonet 21 is matched with the gap to form a self-locking state, so that the connection of the first precast concrete unit and the second precast concrete unit is finally realized.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A rebar self-locking connector, comprising:
the lock core comprises a first steel bar connecting section and a lock cylinder connecting section, the first steel bar connecting section is in threaded connection with a steel bar, the lock cylinder connecting section is provided with a plurality of clamping pin holes, and each clamping pin hole is matched with a clamping pin unit; the bayonet unit comprises a bayonet pin which can move back and forth along a bayonet pin hole;
the lock cylinder comprises a second steel bar connecting section and a lock cylinder connecting section, the second steel bar connecting section is in threaded connection with another steel bar, the lock cylinder connecting section is used for installing the lock cylinder connecting section, the lock cylinder connecting section is of a hollow structure, and one end face, far away from the lock cylinder, of the lock cylinder connecting section is open; the inner wall of the lock cylinder connecting section is provided with a plurality of clamping teeth which are arranged along the length direction of the lock cylinder connecting section, and gaps between the adjacent clamping teeth are matched with the corresponding clamping pins to form a self-locking state;
the bayonet lock unit also comprises a bayonet lock bin clamped in one bayonet lock hole, and the bayonet lock bin comprises a first connecting plate, a second connecting plate and a third connecting plate which are sequentially connected; a bin partition plate is arranged between the first connecting plate and the third connecting plate, and the bayonet pins are connected with the bin partition plate through springs; one side face of the clamping pin is in contact with the first connecting plate, and the other side face of the clamping pin is in contact with the third connecting plate.
2. The self-locking connector as claimed in claim 1, wherein a guide rod is provided on a side of the latch adjacent to the spring, and the spring is sleeved and fixed on the guide rod.
3. The self-locking connector as claimed in claim 1, wherein the latch comprises a latch, the latch contacts the first connecting plate and the third connecting plate, a connecting portion is provided on a side of the latch away from the compartment partition, and the connecting portion is in clearance fit with the adjacent latch;
the connecting part comprises an extrusion surface, a locking surface and an occlusion surface which are sequentially connected, and the extrusion surface is connected with the part of the fixture block contacting the first connecting plate; the extrusion surface is an arc surface; the locking surface is a plane and is matched with the inner wall of the gap; the occlusal surface is an inclined surface inclined towards the lock cylinder and matched with the corresponding latch.
4. The self-locking connector as claimed in claim 3, wherein an inner stop for limiting the locking block is provided at a distal end of the third connecting plate, and a predetermined angle is formed between the inner stop and the third connecting plate.
5. The reinforced self-locking connector of claim 1, wherein the lock cylinder further comprises a first transition section, and the first reinforced connecting section, the first transition section and the lock cylinder connecting section are connected in sequence; the connecting end of the first transition section and the lock cylinder connecting section is a joint plane; and when the lock is in a self-locking state, the attaching plane is attached to the opening end of the lock cylinder connecting section.
6. The reinforced self-locking connector of claim 1, wherein the lock cylinder further comprises a second transition section, the second reinforcement connection section, the second transition section, and the lock cylinder connection section being connected in series.
7. A steel bar self-locking connection method is based on any one of claims 1 to 6, and is characterized by comprising the following steps:
s1, installing the steel bars of the two precast concrete members: installing the steel bars of the first precast concrete component at the first steel bar connecting section of the lock cylinder, and installing the steel bars of the second precast concrete component at the second steel bar connecting section of the lock cylinder;
s2, pouring the first steel bar connecting section of the lock cylinder into a first precast concrete member, and integrally pouring the lock cylinder into a second precast concrete member; after pouring is finished, the lock cylinder connecting section of the lock cylinder is exposed out of the joint surface of the first precast concrete component, and the open end of the lock cylinder is flush with the joint surface of the second precast concrete component;
s3, self-locking and connecting two precast concrete members: the lock cylinder connecting section of the lock cylinder is inserted into the lock cylinder connecting section of the lock cylinder, the bayonet pin moves along the bayonet hole in the inserting process, and when the bayonet pin moves to a gap between the adjacent bayonet teeth, the bayonet pin is in clearance fit with the gap to form a self-locking state, and finally the first precast concrete member and the second precast concrete member are connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110913064.0A CN113684972B (en) | 2021-08-10 | 2021-08-10 | Self-locking connector and self-locking connection method for steel bars |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110913064.0A CN113684972B (en) | 2021-08-10 | 2021-08-10 | Self-locking connector and self-locking connection method for steel bars |
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| CN113684972A CN113684972A (en) | 2021-11-23 |
| CN113684972B true CN113684972B (en) | 2022-06-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105544872B (en) * | 2016-01-21 | 2018-01-23 | 西安建筑科技大学 | A kind of fabricated shear wall component vertical reinforcement original position self-locking connection structure |
| CN206581497U (en) * | 2017-02-28 | 2017-10-24 | 中国建筑第八工程局有限公司 | Self-locking clamp pipe type reinforcing bar straight-insert joint |
| CN206616775U (en) * | 2017-02-28 | 2017-11-07 | 成都冶金实验厂有限公司 | A kind of bar connecting mechanism |
| CN206737270U (en) * | 2017-04-21 | 2017-12-12 | 中国建筑第八工程局有限公司 | Self-locking snap ring-type reinforcing steel bar connecting device |
| CN112900752B (en) * | 2021-02-08 | 2022-07-29 | 山东建筑大学 | Buckle type steel bar connection grouting sleeve and construction process |
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