CN113944280A - Axial reinforcing steel bar cold extrusion connecting sleeve and special tool thereof - Google Patents
Axial reinforcing steel bar cold extrusion connecting sleeve and special tool thereof Download PDFInfo
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- CN113944280A CN113944280A CN202111309882.6A CN202111309882A CN113944280A CN 113944280 A CN113944280 A CN 113944280A CN 202111309882 A CN202111309882 A CN 202111309882A CN 113944280 A CN113944280 A CN 113944280A
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- inner sleeve
- sleeve
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- flange
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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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
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- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses an axial reinforcing steel bar cold extrusion connecting sleeve. The steel bar connecting device comprises an inner sleeve and an outer sleeve, wherein the inner sleeve is of a cylindrical tubular structure, an inner sleeve boss with the caliber smaller than the inner diameter of the inner sleeve and used for fixing and limiting connecting steel bars at two ends is arranged in the middle of the inner sleeve, connecting steel bars are embedded into and connected with the inner sleeve deformation area at two ends of the inner sleeve boss, an inner sleeve flange of a flange structure is arranged on the peripheral surface of the cylindrical tubular structure, and an inner sleeve cone is arranged at the end part of the cylindrical tubular structure; the outer sleeve is sleeved on the outer wall of the inner sleeve and is in clearance fit with the inner sleeve, and one end of the outer sleeve is provided with an outer sleeve cone; the inner sleeve wall is provided with a plurality of inner sleeve wall grooves along the axial direction to form a multi-petal structure with the radial section of the inner sleeve being centrosymmetric. The connecting sleeve of the invention enables the reinforcing steel bar and the sleeve to form a whole through the extrusion tool, the arrangement of the wall groove of the inner sleeve further increases the connecting strength, the connecting processing is more stable and convenient, the arrangement of the boss of the inner sleeve enables the connection to be more accurate, and the human error during the connecting operation is avoided.
Description
Technical Field
The invention relates to the technical field of connection of structural rods, relates to a rod connecting structure, a connecting tool and a connecting method thereof, and particularly relates to an axial steel bar cold extrusion connecting sleeve.
Background
At present, the common reinforcing steel bar mechanical connection modes at home and abroad mainly comprise sleeve radial cold extrusion and taper sleeve axial extrusion, taper threads, straight threads, upset straight threads, grouting sleeves and other connection modes. The existing radial cold extrusion connection mainly has the defects of heavy extrusion tools, low extrusion speed, unstable joint performance and the like, the axial extrusion speed of the taper sleeve is higher than that of the straight sleeve, the extrusion tools are lighter, but the defects of more structural parts, high cost, complex locking plate processing technology and the like exist. The field operability of the threaded connection is poor, the performance of the joint is greatly influenced by manual operation, and the performance of the joint is unstable. The grouting sleeve is high in connection cost, large in field operation difficulty and large in joint installation quality detection difficulty. Meanwhile, the mechanical connection mode of the steel bars has the defects of unstable performance, poor looseness prevention and fatigue resistance and the like.
Disclosure of Invention
The invention discloses an axial reinforcing steel bar cold extrusion connecting sleeve according to the defects of the prior art. The invention aims to provide a rod piece connecting sleeve which is high in adaptability, stability and construction efficiency, and is high in strength and convenient to operate.
The invention is realized by the following technical scheme:
cold extrusion connecting sleeve of axial reinforcing bar, including inner skleeve and outer sleeve, its characterized in that:
inner sleeve: the inner sleeve is of a cylindrical tubular structure, an inner sleeve boss with the caliber smaller than the inner diameter of the inner sleeve and used for fixing and limiting connecting reinforcing steel bars at two ends is arranged in the middle of the inner sleeve, inner sleeve deformation areas for embedding and connecting the connecting reinforcing steel bars are arranged at two ends of the inner sleeve boss, an inner sleeve flange of a flange structure is arranged on one end or the middle peripheral surface of the cylindrical tubular structure, and an inner sleeve cone of a conical surface structure matched with the outer sleeve is arranged at the end part of the cylindrical tubular structure;
outer sleeve: the outer sleeve is sleeved on the outer wall of the inner sleeve and is in clearance fit with the inner sleeve, and the inner wall of one end of the outer sleeve is provided with an outer sleeve cone with a conical surface structure matched with the inner sleeve.
The inner sleeve wall of the invention is provided with a plurality of groups of inner sleeve wall grooves along the axial direction to form a multi-petal structure with the central symmetry of the radial section of the inner sleeve.
The inner sleeve wall groove has a structure for cutting the inner sleeve wall in a penetrating way along the radial direction, or is positioned on the outer surface of the inner sleeve wall, or is positioned on the inner surface of the inner sleeve wall.
Further, an inner sleeve flange is arranged at one end of the inner sleeve, and a plurality of inner sleeve wall grooves with one end penetrating through the end face of the inner sleeve and the other end stopping at the front end face of the inner sleeve flange are axially arranged in the cylindrical tubular structure of the inner sleeve. The outer sleeve is a cylindrical tubular structure with the axial length same as that of the inner sleeve.
Further inner skleeve middle part peripheral surface sets up the inner skleeve flange, and the cylindrical tubular structure of inner skleeve sets up multiunit one end and link up the inner skleeve terminal surface along the axial, the other end ends end, every two inner skleeve wall grooves along axial central symmetry arrangement before the inner skleeve flange. The outer sleeves are two cylindrical tubular structures, and the axial length of each outer sleeve is one half of that of the inner sleeve.
The outer wall of the end surface of one end or two ends of the inner sleeve is provided with a conical surface structure matched with the outer sleeveAn inner sleeve cone; the included angle alpha between the conical surface of the inner sleeve and the axial direction meets the following requirements: alpha is more than or equal to 0 and less than or equal to 900(ii) a The axial length of the conical surface of the inner sleeve is less than or equal to one half to one quarter of the length of the inner sleeve.
The inner wall of the inner sleeve is a smooth surface structure which is provided with threads or concave-convex ring grooves in a processing mode.
The invention also discloses a special tool for the axial steel bar cold extrusion connecting sleeve, which comprises a guide mechanism, a sliding pressure head, a fixed pressure head and a hydraulic power driving oil cylinder; the guide mechanism is a slide bar device, one end of the guide mechanism is provided with a fixed pressing head, the other end of the guide mechanism is provided with a sliding pressing head driven by a driving oil cylinder, the sliding pressing head is provided with a driving arm for driving an extrusion sleeve, and the fixed pressing head is provided with a fixed arm for fixing the flange end of an outer sleeve.
The invention has the following beneficial effects: the connecting sleeve utilizes the principle of metal plastic deformation, a professional riveting tool is used for pushing the outer sleeve and the inner sleeve to move relatively, the outer sleeve extrudes the inner sleeve along the axial direction, the metal of the inner sleeve flows into a gap between the transverse rib of the steel bar and the transverse rib along the radial direction, so that the steel bar and the sleeve form a whole, a clamping force is generated between the steel bars or rod pieces at two ends, the arrangement of the wall groove of the inner sleeve further increases the connecting strength, the connecting processing is more stable and convenient, the connection is more accurate due to the arrangement of the boss of the inner sleeve, and the human error during the connecting operation is avoided.
Drawings
FIG. 1 is a schematic view of a coupling structure for a coupling sleeve according to the present invention;
FIG. 2 is a schematic view of another coupling structure of the connecting sleeve of the present invention;
FIG. 3 is a schematic end view of a configuration of an inner sleeve of the present invention;
FIG. 4 is a schematic front view of an inner sleeve of the present invention;
FIG. 5 is a schematic view of the construction of an outer sleeve according to the present invention;
FIG. 6 is an end view of an alternative construction of the inner sleeve of the present invention;
FIG. 7 is a longitudinal cross-sectional view of an alternative configuration of the inner sleeve of the present invention;
FIG. 8 is an end view of a third configuration of the inner sleeve of the present invention;
FIG. 9 is an end view of a fourth configuration of the inner sleeve of the present invention;
FIG. 10 is a schematic view of a coupling process for the coupling sleeve of the present invention;
FIG. 11 is a schematic view of another coupling process for the connecting sleeve of the present invention;
FIG. 12 is a schematic view of the extrusion tooling of the present invention.
In the figure, 1 is an outer sleeve, 2 is an inner sleeve, 3 is a connecting steel bar, 4 is a sliding pressure head, 5 is a fixed pressure head, 6 is a guide mechanism, 7 is a driving oil cylinder, 21 is an inner sleeve deformation area, 22 is an inner sleeve boss, 23 is an inner sleeve wall groove, 24 is an inner sleeve cone, and 25 is an inner sleeve flange;
d is the inner sleeve flange diameter, D1 is the inner sleeve outer diameter, D2 is the inner sleeve inner diameter, D3 is the inner sleeve boss inner diameter, D4 is the outer sleeve inner diameter, L is the inner sleeve length, L1 is the inner sleeve taper surface axial length, and α is the inner sleeve taper surface and axial included angle.
Detailed Description
The present invention is further described below in conjunction with the following detailed description, which is intended to further illustrate the principles of the invention and is not intended to limit the invention in any way, but is equivalent or analogous to the present invention without departing from its scope.
The first embodiment is as follows:
the axial reinforcing steel bar cold extrusion connecting sleeve comprises an outer sleeve 1 and an inner sleeve 2.
As shown in fig. 1, 3, 4 and 10, the connecting sleeve of the present example is composed of an inner sleeve 2 and an outer sleeve 1.
The inner sleeve 2 is a cylindrical tubular structure, has a symmetrical inner circular tube structure with two ends used for being sleeved in the connecting reinforcing steel bars 3, and comprises an inner sleeve deformation area 21 used for being embedded and connected with the connecting reinforcing steel bars 3, and an inner sleeve boss 22 which is positioned in the middle of the sleeve and is fixedly limited and connected with the reinforcing steel bars 3 at two ends, in the embodiment, a plurality of groups of inner sleeve wall grooves 23 are axially arranged on the wall of the inner sleeve 2, one end of the cylindrical tubular structure of the inner sleeve 2 is provided with an inner sleeve cone 24 with a conical surface structure matched with the outer sleeve 1, and the other end of the cylindrical tubular structure of the inner sleeve 2 is provided with an inner sleeve flange 25 with a flange structure.
The inner sleeve 2 may have a plurality of inner sleeve wall grooves 23 in the axial direction on the cylinder wall, or may not have the inner sleeve wall grooves 23. Set up inner skleeve wall groove 23 and can effectively increased the radial shrink of inner skleeve 2, make inner skleeve 2 take place plastic deformation more easily, reduce and press the required power of riveting process, the inner skleeve 2 metal is more filled between the reinforcing bar class rib, inner skleeve wall groove 23 is no less than two sets of and separates into same orange-peel texture along circumference symmetrical arrangement with inner skleeve 2 section of thick bamboo wall.
One end of the cylindrical structure of the inner sleeve 2 is provided with an inner sleeve cone 24 of a conical surface structure matched with the outer sleeve 1. The inner sleeve cone 24 plays a centering and positioning function in the early stage of press riveting, the contact area between the outer sleeve 1 and the inner sleeve 2 is effectively increased, the inner sleeve 2 and the outer sleeve 1 move relatively on the same axis in the early stage of press riveting, the inner sleeve 2 is enabled to generate uniform and stable plastic deformation, and the conical surface of the inner sleeve cone 24 can also be replaced by circular arc transition.
The middle part of the cylinder body of the cylindrical tubular structure of the inner sleeve 2 is an inner sleeve deformation zone 21, the inner sleeve deformation zone 21 is extruded by the outer sleeve 1 under the action of a special extruding tool to generate maximum plastic deformation, so that the metal of the inner sleeve 2 flows into a gap between the transverse ribs of the connecting reinforcing steel bars 3, and the clamping force required by the connection of the connecting reinforcing steel bars 3 at two ends is provided.
The inner sleeve 2 is positioned in the middle of the sleeve and is provided with an inner sleeve boss 22 for fixing and limiting the connecting reinforcing steel bars 3 at two ends, the inner sleeve boss 22 plays a role in positioning the connecting reinforcing steel bars 3 at two ends, the extruded lengths of the connecting reinforcing steel bars 3 inserted into the inner sleeve 2 are controlled to be equal, and the balance of the fixed connecting force is ensured.
In this embodiment, an inner sleeve flange 25 with a flange structure is arranged at one end of the cylindrical structure of the inner sleeve 2, and the inner sleeve flange 25 plays a role in pressure riveting limitation, so that when the outer sleeve 1 contacts with the end surface of the flange, the installation is finished.
The inner wall of the inner sleeve 2 can be in a concave-convex structure form such as smooth, processed thread or annular groove.
As shown in figure 5, the outer sleeve 1 has smooth cylindrical inner and outer walls and has an internal taper at one end which matches the internal sleeve taper 24.
D is the inner sleeve flange diameter, D1 is the inner sleeve outer diameter, D2 is the inner sleeve inner diameter, D3 is the inner sleeve boss inner diameter, D4 is the outer sleeve inner diameter, L is the inner sleeve length, L1 is the inner sleeve taper surface axial length, and α is the inner sleeve taper surface and axial included angle.
The inner sleeve outer diameter D1 is less than the inner sleeve flange diameter D. The included angle alpha between the conical surface of the inner sleeve and the axial direction meets the following requirements: alpha is more than or equal to 0 and less than or equal to 900. The inner sleeve tapered surface axial length L1 is less than or equal to one-half of the inner sleeve length L. The inner sleeve boss inner diameter D3 is less than the inner sleeve inner diameter D2. The inner sleeve outer diameter D1 is greater than the outer sleeve inner diameter D4.
As shown in fig. 12, the main structure of the special tool of the present invention includes: the device comprises a guide mechanism 6, a sliding pressure head 4, a fixed pressure head 5 and a hydraulic power driving oil cylinder 7.
As shown in fig. 10, during connection, the inner sleeve 2 is inserted into the lower end steel bar, the end of the inner sleeve flange 25 is supported on the tool fixing pressure head 5, the outer sleeve 1 is inserted into the upper end steel bar, the upper end steel bar is inserted into the inner sleeve 2, the inner sleeve conical openings and the outer sleeve conical openings are in matched contact, the tool sliding pressure head 4 is in contact with the other end of the outer sleeve 1, the pump station is started, the outer sleeve 1 extrudes the inner sleeve 2 along the axial direction, and when the end of the outer sleeve 1 conical opening is in contact with the end surface of the inner sleeve flange 25, joint connection is completed.
Example two:
the axial reinforcing steel bar cold extrusion connecting sleeve comprises an outer sleeve 1 and an inner sleeve 2.
As shown in fig. 2, 6, 7 and 11, the connecting sleeve of the present example is composed of an inner sleeve 2 and two outer sleeves 1.
The inner sleeve 2 is a cylindrical tubular structure, and has a symmetrical inner circular tube structure with two ends used for being sleeved in the connecting reinforcing steel bars 3, an inner sleeve deformation area 21 used for being embedded and connected with the connecting reinforcing steel bars 3, and an inner sleeve boss 22 which is positioned in the middle of the sleeve and is fixedly limited and is connected with the reinforcing steel bars 3 at two ends, in the embodiment, an inner sleeve flange 25 with a flange structure is arranged on the circumferential surface of the cylindrical tubular structure in the middle of the cylindrical tubular structure of the inner sleeve 2 and at the same position as the inner sleeve boss 22, in the embodiment, a plurality of groups of inner sleeve wall grooves 23 are axially arranged on the wall of the inner sleeve 2, each group of inner sleeve wall grooves 23 are axially arranged and are symmetrically arranged into two separated sections along the inner sleeve flange 25, and inner sleeve cones 24 with conical surface structures matched with the outer sleeve 1 are arranged at the two end parts of the cylindrical tubular structure of the inner sleeve 2.
The inner sleeve 2 may have a plurality of inner sleeve wall grooves 23 in the axial direction on the cylinder wall, or may not have the inner sleeve wall grooves 23. Set up inner skleeve wall groove 23 and can effectively increased the radial shrink of inner skleeve 2, make inner skleeve 2 take place plastic deformation more easily, reduce and press the required power of riveting process, the inner skleeve 2 metal is more filled between the reinforcing bar class rib, inner skleeve wall groove 23 is no less than two sets of and separates into same orange-peel texture along circumference symmetrical arrangement with inner skleeve 2 section of thick bamboo wall.
The two ends of the cylindrical structure of the inner sleeve 2 are provided with inner sleeve cones 24 of a conical surface structure matched with the outer sleeve 1. The inner sleeve cone 24 plays a centering and positioning function in the early stage of press riveting, the contact area between the outer sleeve 1 and the inner sleeve 2 is effectively increased, the inner sleeve 2 and the outer sleeve 1 move relatively on the same axis in the early stage of press riveting, the inner sleeve 2 is enabled to generate uniform and stable plastic deformation, and the conical surface of the inner sleeve cone 24 can also be replaced by circular arc transition.
The inner sleeve deformation zone 21 is arranged on two sides of the inner sleeve flange 25 of the cylindrical barrel-shaped structure of the inner sleeve 2, the inner sleeve deformation zone 21 is extruded by the outer sleeve 1 under the action of a special extruding tool to generate maximum plastic deformation, so that metal of the inner sleeve 2 flows into a gap between the transverse ribs of the connecting reinforcing steel bars 3, and clamping force required by connecting the connecting reinforcing steel bars 3 at two ends is provided.
The inner sleeve 2 is positioned in the middle of the sleeve and is provided with an inner sleeve boss 22 for fixing and limiting the connecting reinforcing steel bars 3 at two ends, the inner sleeve boss 22 plays a role in positioning the connecting reinforcing steel bars 3 at two ends, the extruded lengths of the connecting reinforcing steel bars 3 inserted into the inner sleeve 2 are controlled to be equal, and the balance of the fixed connecting force is ensured.
In this embodiment, the inner sleeve flange 25 with a flange structure is arranged in the middle of the cylindrical tubular structure of the inner sleeve 2, the inner sleeve flange 25 plays a role in pressure riveting and limiting, and when the outer sleeves 1 on both sides contact the end surfaces of the flanges, the installation is completed.
The inner wall of the inner sleeve 2 can be in a concave-convex structure form such as smooth, processed thread or annular groove.
As shown in figure 5, the outer sleeves 1 are two in the same structure, the axial length of each outer sleeve 1 is the same as the length from the end surface of the inner sleeve flange 25 to the tail end of the inner sleeve 2, the inner wall and the outer wall of each outer sleeve 1 are smooth cylindrical, and one end of each outer sleeve 1 is provided with an inner cone structure matched with the cone 24 structure of the inner sleeve.
The inner wall of the inner sleeve 2 can be in a concave-convex structure form such as smooth, processed thread or annular groove.
D is the inner sleeve flange diameter, D1 is the inner sleeve outer diameter, D2 is the inner sleeve inner diameter, D3 is the inner sleeve boss inner diameter, D4 is the outer sleeve inner diameter, L is the inner sleeve length, L1 is the inner sleeve taper surface axial length, and α is the inner sleeve taper surface and axial included angle.
The inner sleeve outer diameter D1 is less than the inner sleeve flange diameter D. The included angle alpha between the conical surface of the inner sleeve and the axial direction meets the following requirements: alpha is more than or equal to 0 and less than or equal to 900. The inner sleeve tapered surface axial length L1 is less than or equal to one-quarter of the inner sleeve length L. The inner sleeve boss inner diameter D3 is less than the inner sleeve inner diameter D2. The inner sleeve outer diameter D1 is greater than the outer sleeve inner diameter D4.
As shown in fig. 12, the main structure of the special tool of the present invention includes: the device comprises a guide mechanism 6, a sliding pressure head 4, a fixed pressure head 5 and a hydraulic power driving oil cylinder 7.
As shown in fig. 12, during connection, the outer sleeve 1 is inserted into the reinforcing bars at two ends, and then the reinforcing bars at two ends are inserted into the inner sleeve 2, so that the tapered openings of the inner and outer sleeves are in fit contact, the outer sleeves 1 at two ends are respectively in contact with the tool fixing pressure head 5 and the sliding pressure head 4, the pump station is started, the sliding pressure head 4 moves, the outer sleeves 1 at two ends are pushed to extrude the inner sleeve 2 along the axial direction, and the installation is completed when the tapered openings at two ends of the outer sleeve 1 are in contact with the end surface of the inner sleeve flange 25.
A plurality of groups of inner sleeve wall grooves 23 are axially arranged on the wall of the inner sleeve 2 to form a multi-petal structure with the radial section of the inner sleeve being centrosymmetric.
The inner sleeve wall groove 23 has a structure for penetrating and dividing the inner sleeve wall in the radial direction, or is located on the outer surface of the wall, or is located on the inner surface of the wall.
As shown in fig. 3, the inner sleeve wall groove 23 has a structure penetrating the split cylinder wall in the radial direction and is arranged continuously in the axial direction of the cylindrical cylinder wall. Referring to fig. 4, the inner sleeve wall groove 23 has one end penetrating the end surface of the inner sleeve 2 and the other end terminating at the front end surface of the inner sleeve flange 25, and divides the inner sleeve 2 into the same multi-lobe structure.
As shown in fig. 6, the inner sleeve wall grooves 23 have a structure penetrating the split cylinder wall in the radial direction, and are arranged in two groups axially symmetrically in the cylindrical cylinder wall. Referring to fig. 7, one end of the inner sleeve wall groove 23 penetrates through the end surface of the inner sleeve 2, the other end of the inner sleeve wall groove ends at the front end surface of the inner sleeve flange 25, two inner sleeve wall grooves are symmetrically arranged along the axial direction in each group, and the inner sleeve wall 2 is divided into the same multi-lobe structure.
As shown in FIG. 8, the inner sleeve wall groove 23 of FIG. 8 is formed on the inner surface of the wall of the inner sleeve 2; the axial direction of the inner sleeve flange can be a structure with one end penetrating through the end surface of the inner sleeve 2 and the other end stopping at the front end surface of the inner sleeve flange 25, or a structure with one end penetrating through the end surface of the inner sleeve 2 and the other end stopping at the front end surface of the inner sleeve flange 25 and two axially symmetrically arranged groups.
As shown in FIG. 9, the inner sleeve wall groove 23 of FIG. 9 is formed on the outer surface of the wall of the inner sleeve 2; the axial direction of the inner sleeve flange can be a structure with one end penetrating through the end surface of the inner sleeve 2 and the other end stopping at the front end surface of the inner sleeve flange 25, or a structure with one end penetrating through the end surface of the inner sleeve 2 and the other end stopping at the front end surface of the inner sleeve flange 25 and two axially symmetrically arranged groups.
Claims (10)
1. The utility model provides an axial reinforcing bar cold extrusion connecting sleeve, includes inner skleeve and outer sleeve, its characterized in that:
inner sleeve: the inner sleeve is of a cylindrical tubular structure, an inner sleeve boss with the caliber smaller than the inner diameter of the inner sleeve and used for fixing and limiting connecting reinforcing steel bars at two ends is arranged in the middle of the inner sleeve, inner sleeve deformation areas for embedding and connecting the connecting reinforcing steel bars are arranged at two ends of the inner sleeve boss, an inner sleeve flange of a flange structure is arranged on one end or the middle peripheral surface of the cylindrical tubular structure, and an inner sleeve cone of a conical surface structure matched with the outer sleeve is arranged at the end part of the cylindrical tubular structure;
outer sleeve: the outer sleeve is sleeved on the outer wall of the inner sleeve and is in clearance fit with the inner sleeve, and the inner wall of one end of the outer sleeve is provided with an outer sleeve cone with a conical surface structure matched with the inner sleeve.
2. The axial rebar cold extrusion coupling sleeve of claim 1, wherein: and a plurality of groups of inner sleeve wall grooves are axially arranged on the inner sleeve wall to form a multi-petal structure with the radial section of the inner sleeve being centrosymmetric.
3. The axial rebar cold extrusion coupling sleeve of claim 2, wherein: the inner sleeve wall groove has a structure for cutting the inner sleeve wall in a penetrating way along the radial direction, or is positioned on the outer surface of the inner sleeve wall, or is positioned on the inner surface of the inner sleeve wall.
4. The axial rebar cold extrusion coupling sleeve of claim 3, wherein: an inner sleeve flange is arranged at one end of the inner sleeve, and a plurality of inner sleeve wall grooves with one end penetrating through the end face of the inner sleeve and the other end stopping at the front end face of the inner sleeve flange are axially arranged in the cylindrical tubular structure of the inner sleeve.
5. The axial rebar cold extrusion coupling sleeve of claim 4, wherein: the outer sleeve is a cylindrical tubular structure with the axial length same as that of the inner sleeve.
6. The axial rebar cold extrusion coupling sleeve of claim 3, wherein: the inner sleeve flange is arranged on the peripheral surface of the middle of the inner sleeve, and the cylindrical tubular structure of the inner sleeve is axially provided with a plurality of groups of inner sleeve wall grooves, wherein one end of each inner sleeve wall groove penetrates through the end surface of the inner sleeve, the other end of each inner sleeve wall groove is stopped at the front end surface of the inner sleeve flange, and each group of inner sleeve wall grooves are symmetrically arranged along the axial center.
7. The axial rebar cold extrusion coupling sleeve of claim 6, wherein: the outer sleeves are two cylindrical tubular structures, and the axial length of each outer sleeve is one half of that of the inner sleeve.
8. The axial rebar cold extrusion coupling sleeve of any one of claims 1-7, wherein: the outer wall of the end face of one end or two ends of the inner sleeve is provided with an inner sleeve cone with a conical surface structure matched with the outer sleeve; the included angle alpha between the conical surface of the inner sleeve and the axial direction meets the following requirements: alpha is more than or equal to 0 and less than or equal to 900(ii) a The axial length of the conical surface of the inner sleeve is less than or equal to one half to one quarter of the length of the inner sleeve.
9. The axial rebar cold extrusion coupling sleeve of claim 8, wherein: the inner wall of the inner sleeve is a smooth surface structure which is provided with threads or concave-convex ring grooves in a processing mode.
10. The utility model provides an axial reinforcing bar cold extrusion connecting sleeve specialized tool which characterized in that: comprises a guide mechanism, a sliding pressure head, a fixed pressure head and a hydraulic power driving oil cylinder; the guide mechanism is a slide bar device, one end of the guide mechanism is provided with a fixed pressing head, the other end of the guide mechanism is provided with a sliding pressing head driven by a driving oil cylinder, the sliding pressing head is provided with a driving arm for driving an extrusion sleeve, and the fixed pressing head is provided with a fixed arm for fixing the flange end of an outer sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111309882.6A CN113944280A (en) | 2021-11-07 | 2021-11-07 | Axial reinforcing steel bar cold extrusion connecting sleeve and special tool thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111309882.6A CN113944280A (en) | 2021-11-07 | 2021-11-07 | Axial reinforcing steel bar cold extrusion connecting sleeve and special tool thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113944280A true CN113944280A (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111309882.6A Pending CN113944280A (en) | 2021-11-07 | 2021-11-07 | Axial reinforcing steel bar cold extrusion connecting sleeve and special tool thereof |
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| CN (1) | CN113944280A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115262866A (en) * | 2022-09-26 | 2022-11-01 | 河北易达钢筋连接技术有限公司 | Mechanical extrusion sleeve assembly for modular connection |
-
2021
- 2021-11-07 CN CN202111309882.6A patent/CN113944280A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115262866A (en) * | 2022-09-26 | 2022-11-01 | 河北易达钢筋连接技术有限公司 | Mechanical extrusion sleeve assembly for modular connection |
| CN115262866B (en) * | 2022-09-26 | 2023-01-17 | 河北易达钢筋连接技术有限公司 | Mechanical extrusion sleeve assembly for modular connection |
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