CN207048188U - A kind of reinforcing bar is partly in the milk branch sleeve - Google Patents
A kind of reinforcing bar is partly in the milk branch sleeve Download PDFInfo
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- CN207048188U CN207048188U CN201720893056.3U CN201720893056U CN207048188U CN 207048188 U CN207048188 U CN 207048188U CN 201720893056 U CN201720893056 U CN 201720893056U CN 207048188 U CN207048188 U CN 207048188U
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Abstract
Partly it is in the milk branch sleeve, including cylinder and plug screw the utility model discloses a kind of reinforcing bar, the barrel of the cylinder is provided with thick liquid discharge mouth, wherein：Described cylinder one end is grouting cavity, and the other end is provided with the internal thread coordinated with the plug screw external screw thread, and the threaded connection section of the plug screw and the cylinder is cold-pressed to form cold pressing deformation section through local radial, to realize that threaded closure connects.The utility model not only significantly reduces the thread pitch that ferrule barrel coordinates with plug screw, the intensity of screw thread pair part cooperation thread is also added using metal flow harden effect, simple production process, it is convenient to carry out, not only maintain original processing efficiency and cost advantage, the plasticity demand of grout sleeve threaded connection section is in turn ensure that, meets the requirement of joint performance, there is significant technological progress meaning.
Description
Technical field
Technical field of building construction is the utility model is related to, more particularly to a kind of reinforcing bar is partly in the milk branch sleeve.
Background technology
Sleeve grouting connection is the connecting method for reinforcing bars for being mainly used in prefabricated concrete structure, wherein half grouting connection
Sleeve, its one end are connected using grouting, and the other end, so as to form a joint entirety, is widely used in filling using threaded connection
The connection of vertical reinforcement with concrete structure.Half common grouting branch sleeve has using the processing and manufacturing of steel machinery and spheroidal graphite
Iron casting manufactures two kinds, wherein using shaped steel be half grout sleeve that be machined of raw material because material capability is reliable, process smart
Degree is high and is more applied.
Half grouting branch sleeve of steel machining is frequently with shaped steel, the overall structure directly made of Drilling operation etc.
Sleeve, its advantage are good integrities, and Quality Control Links are few, steady quality.But when connecting Large-size rebar, overall knot
The amount of machining that structure sleeve needs is very big, high material consumption, and machining cost is high, therefore also uses split combination structure,
It is made up of cylinder and plug screw two parts, threaded ends are processed as the plug screw with internal and external threads, internal thread with round steel respectively
For the threaded connection with reinforcing bar, external screw thread is used to be connected with cylinder, the grouting of one end processing and reinforcing bar grouting connection of cylinder
Chamber, the internal thread that other end processing is connected with plug screw, the two is together by a threaded connection to form complete half grout sleeve.
The cylinder of half grout sleeve of combining structure mainly uses seamless steel pipe material to be machined for raw material, for
Large-size rebar half grout sleeve of connection, raw material can be saved significantly on compared to overall structure using combining structure, reduce and process
Cost, but the deficiency of the sleeve of combining structure is：Sleeve adds one group of threaded connection compared to the grout sleeve of overall structure half
Pair, and threaded connection pair certainly exists thread pitch, deformation performance of the concrete structure to the reinforced bar sleeve grouting joint of use
There is clear and definite high request, in stress, the thread pitch of cylinder and plug screw will for the splice of the grout sleeve of combining structure half
Increase the remaining deformation of joint, although thread pitch can be by being threaded positive stop lug boss and threaded tightening force, by screw thread
Gap reduces, and improves the deformation performance of joint, but the size of the half of Large-size rebar grouting branch sleeve is larger, cylinder and spiral shell
The diameter of thread of plug connection is larger and reach is longer, needs to subtract thread pitch by improving screw-down torque in combination
The small degree to joint performance requirement is extremely difficult, and Large-size rebar half more than 500MPa levels is reached for yield strength and is in the milk
Muff joint, to overcome the thread pitch of combining structure, joint distortion performance is met that it is then impassable problem to require, such as
The simple production efficiency using the screw-down torque for increasing screw thread, the not only installation of influence sleeve combination, and in screw thread stress distribution
Pretightning force is excessive in the case of inequality can adversely affect to screw thread pair bearing capacity, and then the connection that can also influence joint is strong
Degree.And when the plug screw and cylinder of combining structure sleeve are welded outside threaded connection pair, the weld seam can be prior to threaded connection
Pair is destroyed before overcoming gap completely, the joint of the structure is met deformation performance requirement.Therefore, combining structure half fills
Slurry sleeve is restricted by above problem in major diameter 500MPa and above grade high-strength reinforcing bar field and is difficult to engineer applied.
In the case where the grout sleeve of steel half faces above difficulty, integrally-built spheroidal graphite cast-iron cast half grout sleeve product also by
In home made materials intensity is relatively low, plasticity is poor, reliable in quality degree can not ensure the reason such as 100%, it is difficult in high intensity Large-diameter Steel
Applied in the connection of the grout sleeve of muscle half.Above-mentioned various deficiencies, cause the half of high intensity Large-size rebar prior art to be in the milk and cover
Cylinder is difficult the popularization and application in prefabricated concrete structure, and using the sleeve of full grouting structure, then integrated cost is considerably beyond partly
Grout sleeve, limit the progress and development of sleeve grouting connection and concrete assembling construction technology in building industrialization field.
The content of the invention
To solve above-mentioned the deficiencies in the prior art, the utility model provides a kind of reinforcing bar and is partly in the milk branch sleeve.
The technical solution of the utility model is as follows：
A kind of reinforcing bar half, which is in the milk, is cold-pressed branch sleeve, including cylinder and plug screw, and plasma discharge is offered on the barrel of the cylinder
Mouthful, wherein：
Described cylinder one end is grouting cavity, and the other end is provided with the internal thread coordinated with the external screw thread of the plug screw, described
The threaded connection section of plug screw and the cylinder is cold-pressed to form cold pressing deformation section through local radial, to realize that threaded closure connects.
Preferably, the local cold pressing is cold pressing together or multiple tracks cold pressing.
Preferably, it is described cold pressing deformation section cylinder axial direction cumulative length for screw thread coordinates section axial length 1/4~
2/3, and it is not less than 3 pitch.
Preferably, the cold pressing deformation section is from cylinder maximum outside diameter to the radial deformation depth in tubular axis direction
0.5mm-5mm。
Preferably, the cylinder is provided with one positioned at the end face at plug screw matching thread end between its adjacent cold pressing deformation section
Non- crimp section, the axial length of the non-crimp section is less than 3 pitch.
Preferably, the external screw thread of the plug screw is straight thread or taper thread.
Preferably, the plug screw center is provided with a screwed hole, and the reinforcing bar for being machined with the screw thread being engaged with end connects
Connect.
The principle that cylinder of the present utility model connects with plug screw threaded closure is：Cylinder and plug screw are completed to assemble
Afterwards, to implementing local radial cold presswork on the thread segment excircle of cylinder, make in the regional area cylinder of screw thread pair of cooperation
Thread radial deformation is produced with the external screw thread of plug screw and engaged, and realizes that partial screw threads are closely sealed, and cylinder and plug screw are connected into one tightly
Gu the entirety of threaded closure.Stress is concentrated mainly on the leading portion of screw thread cooperation when threaded connection pair carries, when cylinder and plug screw spiral shell
Line abutting end end face to the axial length of non-crimp section between cold pressing deformation section adjacent thereto is no more than 3 pitch
When, cold pressing deformation section mainly carries threaded sections in screw thread pair and forms threaded closure connection, can significantly reduce screw thread pair carrying
The remaining deformation occurred afterwards, so as to improve the deformation performance of joint.Additionally due to screw thread local deformation, screw thread pair is without again
Implement tightening operation and reduce Screw Thread Fit Clearance.It is local cold work reinforced closely sealed in joint reinforcing steel bar bear in the elastic range stage
Screw thread can bear its active force, and its minimum gap will not cause significantly to adversely affect to joint distortion performance, work as reinforcing bar
After being forced into yielding stage, all screw threads of the screw thread pair of sleeve are involved in carrying stress, so as to ensure the pole of whole joint
Limit bearing capacity reaches design strength index.
Relative to traditional half grout sleeve, the utility model tool has the advantage that：
Although half grout sleeve of combining structure mainly has the knot of preferable plasticity using No. 45 carbon constructional quality steels etc.
Structure Steel material, but because ferrule barrel only carries out local cold pressing deformation, deformed region is not covered with whole matching threads, and
Radial-deformation is small, and the material plasticity of cylinder and plug screw join domain does not lose significantly, and the cold presswork not only effectively drops
The thread pitch that low ferrule barrel coordinates with plug screw, also add screw thread pair part using metal flow harden effect and coordinate spiral shell
The intensity of tooth, simple production process are convenient to carry out.The grouting cold pressing branch sleeve of reinforcing bar of the present utility model half had both maintained original
Processing efficiency and cost advantage, reached the switching performance of overall structure grout sleeve again, met the requirement of joint performance, have
There is significant technological progress meaning.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 2.
Fig. 3 is the structural representation of the utility model embodiment 3.
Fig. 4 is the cross section structure schematic diagram of the utility model embodiment 4.
Fig. 5 is the cross section structure schematic diagram of the utility model embodiment 5.
Fig. 6 is the structural representation of the utility model embodiment 6.
Fig. 7 is the cross section structure schematic diagram of the utility model embodiment 7.
Description of reference numerals：1- cylinders；2- plug screws；3- grouting mouths；4- thick liquid discharge mouths；5- grouting chambers；6- plug screw external screw threads；7-
Cylinder internal thread；8- is cold-pressed deformation section；9- screwed holes；10- grouting chambers port.
Embodiment
In conjunction with implementation and accompanying drawing to construction, shape and the further details of explanation of feature of the present utility model.It should manage
Solution, the present embodiment is merely to illustrate the utility model, rather than limits the scope of protection of the utility model.
Embodiment 1
As shown in figure 1, be partly in the milk branch sleeve, including cylinder 1 and plug screw 2 for a kind of reinforcing bar of the present utility model, it is described
Grouting mouth 3 and thick liquid discharge mouth 4 are offered on the barrel of cylinder 1, the cylinder 1 is provided with grouting chamber 5 in the one end for opening up grouting mouth 3,
Be provided with the cylinder internal thread 7 coordinated with the plug screw external screw thread 6 of plug screw 2 in the one end being connected with plug screw 2, the plug screw external screw thread 6 with
Cylinder internal thread 7 forms a maximum radial depth 1.5mm through single track cold pressing threaded closure connection, cold pressing, the length in cylinder axial direction
Spend for 3 pitch and equal to 1/4 cold pressing deformation section 8 of screw thread coordinates section axial length, meanwhile, the cylinder 1 is located at provided with one
Non- crimp section between the cold pressing deformation section 8 adjacent thereto of the end face at plug screw matching thread end, the non-crimp area
The axial length of section is 2 pitch.The center of plug screw 2 is provided with a screwed hole 9, can be used for being machined with being connected end being engaged
The reinforcing bar of screw thread is connected.
The half application process those skilled in the art for being in the milk branch sleeve know about, can be in accordance with concerned countries industry mark
It is accurate《Reinforced bar sleeve grouting connection application technology code》JGJ355 and other relevant criterions perform.
Embodiment 2
As shown in Fig. 2 being the present embodiment accompanying drawing, the difference with embodiment 1 is, the cold pressing of the embodiment is cold for twice
Pressure, cold pressing deformation section 8 of the axial cumulative length up to 6 pitch.Thick liquid discharge mouth 4 is only offered on the barrel of the cylinder 1, the sleeve
When being in the milk connection construction, grouting material must enter sleeve grouting chamber 5 from the gap location of sleeve grouting chamber port 10 and reinforcing bar.
Remaining is same as Example 1.
Embodiment 3
As shown in figure 3, being the present embodiment accompanying drawing, the difference with embodiment 1 is, the outside spiral shell of plug screw 2 in the embodiment
Line is tapered thread, and the maximum radial depth of cold pressing deformation section 8 is 4mm, and axial length is that the screw thread of plug screw 2 and cylinder 1 coordinates
The 2/3 of segment length, remaining is same as Example 1.
Embodiment 4
As shown in figure 4, for the present embodiment reinforcing bar half be in the milk branch sleeve along plug screw 2 with the screw thread coordinates section of cylinder 1 cold
The longitudinal section view of vertical tubular axis at compressive strain, the difference with embodiment 1 are, in the embodiment, cold pressure procedure uses
Circular dies, arc cold pressing deformation section 8 is formed, remaining is same as Example 1.
Embodiment 5
As shown in figure 5, for the present embodiment reinforcing bar half be in the milk branch sleeve along plug screw 2 with the screw thread coordinates section of cylinder 1 cold
The longitudinal section view of vertical tubular axis at compressive strain, the difference with embodiment 1 are, in the embodiment, cold pressure procedure uses
Polygon mould, the discontinuous polygon cold pressing deformation section 8 in border is formed, remaining is same as Example 1.
Embodiment 6
As shown in fig. 6, for the present embodiment reinforcing bar half be in the milk branch sleeve along plug screw 2 with the screw thread coordinates section of cylinder 1 cold
The longitudinal section view of vertical tubular axis at compressive strain, the difference with embodiment 1 are, in the embodiment, cylinder 1 is more ribs
Body, its cross section are polygon, and cold pressure procedure uses circular dies, form the disjunct cold pressing in the multi-angular place border of cylinder and become
Shape section 8, the maximum radial depth of deformation section 8 is cold-pressed in cylinder original rib tip direction, be 5mm, to avoid larger cold pressing radial direction
The size of deformation effect plug screw 2 and the screwed hole of bar connecting, the screwed hole of plug screw 2 is complete in cylinder and plug screw threaded connection section
Individually processed again after deforming operation into cold pressing, remaining is same as Example 1.
Embodiment 7
As shown in fig. 7, it is in the milk sectional view of the branch sleeve along plug screw radial direction for the reinforcing bar half of the present embodiment, with embodiment 1
Difference be that in the embodiment, plug screw 2 is identical with the external diameter of cylinder 1, cold pressing simultaneously deforms cylinder 1 and the external diameter of plug screw 2, cold
The maximum radial depth of compressive strain section 8 is 2.5mm, is 4 2.0mm in the axial length of the cold pressing deformation section 8 of the outer surface of cylinder 1
Pitch, i.e. 8mm, it is the 1/4 of plug screw 2 and the screw thread coordinates section length 32mm of cylinder 1, meanwhile, the cylinder 1 is located at plug screw provided with one
Non- crimp section between the cold pressing deformation section adjacent thereto of the end face at matching thread end, the axle of the non-crimp section
It is 0mm to length, remaining is same as Example 1.
Description of the present utility model is merely illustrative above, and it is nonrestrictive, and those skilled in the art should be managed
Solution, many modifications, change or equivalent modification can be carried out to it within the spirit and scope that claim limits, but they are all
It will fall into the scope of protection of the utility model.
Claims (7)
- The branch sleeve 1. a kind of reinforcing bar is partly in the milk, including cylinder and plug screw, thick liquid discharge mouth is offered on the barrel of the cylinder, it is special Sign is：Described cylinder one end is grouting cavity, and the other end is provided with the internal thread coordinated with the external screw thread of the plug screw, the plug screw It is cold-pressed to form cold pressing deformation section through local radial with the threaded connection section of the cylinder, to realize that threaded closure connects.
- The branch sleeve 2. reinforcing bar as claimed in claim 1 is partly in the milk, it is characterised in that the local cold pressing for cold pressing together or Multiple tracks is cold-pressed.
- The branch sleeve 3. reinforcing bar as claimed in claim 1 is partly in the milk, it is characterised in that the cold pressing deformation section is in cylinder axial direction Cumulative length be the 1/4~2/3 of screw thread coordinates section axial length, and be not less than 3 pitch.
- The branch sleeve 4. reinforcing bar as claimed in claim 1 is partly in the milk, it is characterised in that the cold pressing deformation section is maximum from cylinder The radial deformation depth in outer radial tubular axis direction is 0.5mm-5mm.
- The branch sleeve 5. reinforcing bar as claimed in claim 1 is partly in the milk, it is characterised in that the cylinder is matched somebody with somebody provided with one positioned at plug screw Close end face to the non-crimp section between its adjacent cold pressing deformation section, the axial direction of the non-crimp section of the end of thread Length is less than 3 pitch.
- The branch sleeve 6. reinforcing bar as claimed in claim 1 is partly in the milk, it is characterised in that the external screw thread of the plug screw is straight thread Or taper thread.
- The branch sleeve 7. reinforcing bar as claimed in claim 1 is partly in the milk, it is characterised in that the plug screw center is provided with a screw thread Hole, for connecting reinforcing bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720893056.3U CN207048188U (en) | 2017-07-21 | 2017-07-21 | A kind of reinforcing bar is partly in the milk branch sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720893056.3U CN207048188U (en) | 2017-07-21 | 2017-07-21 | A kind of reinforcing bar is partly in the milk branch sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207048188U true CN207048188U (en) | 2018-02-27 |
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ID=61496475
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720893056.3U Active CN207048188U (en) | 2017-07-21 | 2017-07-21 | A kind of reinforcing bar is partly in the milk branch sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207048188U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677215A (en) * | 2018-07-12 | 2018-10-19 | 山西双宇新能源有限公司 | A kind of anode conducting device and its manufacturing method of bar planting die cast |
| CN109629766A (en) * | 2018-12-28 | 2019-04-16 | 同济大学 | Longitudinal steel pipe sleeve for becoming wall thickness |
-
2017
- 2017-07-21 CN CN201720893056.3U patent/CN207048188U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677215A (en) * | 2018-07-12 | 2018-10-19 | 山西双宇新能源有限公司 | A kind of anode conducting device and its manufacturing method of bar planting die cast |
| CN108677215B (en) * | 2018-07-12 | 2023-09-08 | 山西双宇新能源有限公司 | Anode conductive device for reinforcing bar die casting and its manufacturing method |
| CN109629766A (en) * | 2018-12-28 | 2019-04-16 | 同济大学 | Longitudinal steel pipe sleeve for becoming wall thickness |
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