CN212248914U - Steel bar connecting piece - Google Patents
Steel bar connecting piece Download PDFInfo
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- CN212248914U CN212248914U CN202021861810.3U CN202021861810U CN212248914U CN 212248914 U CN212248914 U CN 212248914U CN 202021861810 U CN202021861810 U CN 202021861810U CN 212248914 U CN212248914 U CN 212248914U
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- steel bar
- clamping
- reinforcing bar
- connecting piece
- bar connecting
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Abstract
The invention provides a steel bar connecting piece, and relates to the technical field of steel bar connection. The utility model provides a steel bar connecting piece, includes cover head portion and chuck portion, embraces in the cover head portion and tightly holds the face for the conical surface, and the outer locking face of the clamping jaw of chuck portion is the conical surface too, and during the use the clamping jaw of two steel bar connecting pieces inserts each other on another steel bar connecting piece's the interior face of embracing tightly, when compressing tightly two steel bar connecting pieces, the interior face of embracing of cover head portion makes the clamping jaw inwards compress, and the interior clamping face of clamping jaw in presss from both sides tight reinforcing bar, accomplishes the connection of reinforcing bar. The steel bar connecting piece is convenient to construct, few in parts and high in installation efficiency.
Description
Technical Field
The invention relates to the technical field of steel bar connection, in particular to a steel bar connecting piece.
Background
The problem of interconnection between reinforcing bars is often met in the construction, generally adopt the welding mode, the tip welding of two adjacent reinforcing bars together, but the welding mode is difficult to guarantee the connection quality, receives the construction site space restriction especially when high altitude construction, and the construction degree of difficulty is big, has the potential safety hazard to cause very big pollution to the environment.
In recent years, a connecting piece group of a steel bar connecting joint has appeared, which comprises a plurality of connecting pieces, and the connecting pieces form the connecting piece group, for example, patent No. CN20182147484.8 "connecting piece group of a steel bar connecting joint"
A connector for reinforcing bar is composed of connecting plate, conic sleeve and connecting plate.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the steel bar connecting piece, when the steel bar connecting piece is applied to steel bar butt joint, only two same steel bar connecting pieces are needed, the butt joint of the steel bars can be completed by applying pressure, the installation is convenient, the number of parts is small, and the installation efficiency is high.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a reinforcing bar coupler, characterized in that, a reinforcing bar coupler comprises:
the sleeve head part is in a hollow tubular shape, the inner side of the sleeve head part is provided with an inner holding surface,
the clamping head part is connected with one end of the sleeve head part and consists of at least two clamping claws, the outer sides of the clamping claws are provided with outer locking surfaces, the inner sides of the clamping claws are inner clamping surfaces, the clamping claws are uniformly distributed at one end of the sleeve head part, and the distance between every two adjacent clamping claws is not less than the width of the clamping claws.
Furthermore, the inner holding surface is a conical surface, the outer locking surface is a conical surface, and the conicity of the inner holding surface is the same as that of the outer locking surface.
Furthermore, the inner clamping surface is provided with anti-loosening teeth which are in a sawtooth shape.
Furthermore, the size of the middle of the inner holding surface and the outer locking surface is larger than the sizes of the two ends.
Further, the chuck portion is composed of three chuck jaws.
Furthermore, the inner holding surface is an inclined surface, the outer locking surface is an inclined surface, and the inclination of the inner holding surface is the same as that of the outer locking surface.
Furthermore, the outer locking surface is provided with chuck anti-withdrawal teeth which are saw-toothed grooves.
Compared with the prior art, the invention has the following beneficial effects: the steel bar connecting piece has the advantages that the inner holding surface on the taper sleeve and the outer locking surface on the connecting piece group are arranged on the steel bar connecting piece, two ends of the steel bar connecting piece are completely identical, the two identical steel bar connecting pieces are connected together to form a whole, the steel bar connecting piece cannot be separated during installation, the steel bar connecting piece is easy to fix and compress and has few parts, and the two connecting pieces can further hold the steel bar and stretch the steel bar more and more tightly after the steel bar is tensioned due to the crossed structure.
Drawings
FIG. 1 is a schematic perspective view of a reinforcing bar coupler according to the present invention;
FIG. 2 is an exploded perspective view of the first embodiment of the present invention in use;
FIG. 3 is a cross-sectional front elevational view of a first embodiment of the present invention;
FIG. 4 is a cross-sectional view after compression of a first embodiment of the present invention;
FIG. 5 is an exploded perspective view of a second embodiment of the present invention in use;
FIG. 6 is a cross-sectional view of a second embodiment of the present invention;
FIG. 7 is an exploded perspective view of a third embodiment of the present invention in use;
FIG. 8 is a cross-sectional view of a third embodiment of the present invention;
in the drawings: 1. the sleeve head part 2, the clamp head part 3, the steel bar 12, the inner holding surface 21, the clamping claw 101, the sleeve head anti-withdrawal tooth 201, the outer locking surface 202, the inner clamping surface 203, the anti-loosening tooth 204 and the clamp head anti-withdrawal tooth.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the present invention will be described in more detail below with reference to the accompanying drawings of the present invention.
The existing steel bar connecting piece has the disadvantages of complex structure, more parts and low installation efficiency, and if the steel bar connecting joint with the connecting piece group is used, two taper sleeves and at least three connecting pieces are needed to be used, the parts are scattered, and the parts are required to be positioned together during installation and then can be extruded together by hydraulic pliers. The connecting piece and the taper sleeve are integrated, namely the taper (or inclination) of the taper sleeve and the connecting piece is arranged on the reinforcing steel bar connecting piece, so that the structure is simplified, and the number of parts is reduced.
In order to increase the versatility and the installation convenience of the components, the clamping claws 21 are uniformly distributed at one end of the sleeve head portion 1, because two connectors are paired to be used simultaneously, and in order to enable the clamping claws 21 of one connector to extend into the inner holding surface 12 of the sleeve head portion 1, the distance between the two clamping claws 21 is larger than the width of the clamping claws 21.
For clarity, the steel bar 3 on one side is called a steel bar 3A, the steel bar 3B is called the other side, the joint of the sleeve head 1 at the position of the steel bar 3A after installation is called a steel bar connector a, the steel bar connector B is arranged on the other side, as can be seen from fig. 3 and 4, the clamping claw 21 of the steel bar connector a extends into the inner holding surface 12 of the steel bar connector B, the clamping claw 21 of the steel bar connector B extends into the inner holding surface 12 of the steel bar connector a, when the steel bar connector a and the steel bar connector B are mutually extruded, the inner holding surface 12 extrudes the outer locking surface 201 to shrink the inner holding surface 202, the steel bar 3 is clamped, and in order to prevent the steel bar 3 and the inner holding surface 202 from slipping, the anti-loosening teeth 203 are added on the inner holding surface 202, so that the pulling-out force of the square bar can.
After the steel bar 3 is compressed, the clamping jaw 21 of the steel bar connecting piece A clamps the steel bar 3B, the clamping jaw 21 of the steel bar connecting piece B clamps the steel bar 3A, when the pulling force of the steel bar 3 is greater than the friction force between the inner holding surface 12 and the outer locking surface 201, the steel bar 3A pulls the clamping jaw 21 of the steel bar connecting piece B to continue to squeeze the inner holding surface 12 of the steel bar connecting piece A, the pressure of the inner holding surface 12 on the clamping jaw 21 is increased, the friction force is increased until the balance is reached, the fact that the steel bar 3 is pulled more and the steel bar 3 is connected more tightly is realized.
After the joint is compressed, the friction force between the inner holding surface 12 and the outer locking surface 201 is very large, and the inner holding surface and the outer locking surface are self-locked together. It is possible to resist the pressure of the reinforcing bars 3.
But to the operating mode of the anti high pressure of some specific requirements's needs, after the pressure of reinforcing bar 3 is greater than the frictional force of interior enclasping face 12 and outer locking face 201, the reinforcing bar connecting piece can loosen, in order to increase the reliability, can set up some sawtooth grooves on the locking face, after clamping jaw 21 and interior enclasping face 12 compress tightly the auto-lock, the chuck prevents moving back tooth 204 can block on pullover anti-moving back tooth 101 on interior enclasping face 12, does not loosen when guaranteeing to press.
Example one
As shown in fig. 1, 2, 3 and 4: the embodiment I provides a three-clamping-jaw 21 circular steel bar connecting piece, including cover head 1, cover head 1 makes hollow circular tube, there is interior holding face 12 inside, the one end of cover head 1 is chuck portion 2, chuck portion 2 has three clamping jaw 21 to constitute, three clamping jaw 21 evenly distributed is in the one end of cover head 1, in order to let clamping jaw 21 stretch into the interior holding face 12 of cover head 1, the interval between two clamping jaw 21 is not less than the width of clamping jaw 21, convert the contained angle into, every clamping jaw 21 contained angle is less than 60, so clamping jaw 21 clearance just satisfies the requirement that is greater than 60.
The inner holding surface 12 of the steel bar connecting piece is a conical surface, actually, the drawing inclination of the round surface of the steel bar 3 is formed according to a certain angle, and the curved surface formed when the steel bar 3 is cylindrical is a conical surface. The end close to the clamping claw 21 is large in size, and the end far away from the clamping claw 21 is small in size; the outer locking surface 201 of the clamping claw 21 is also a conical surface, the size of one end close to the sleeve head part 1 is large, and the size of one end far away from the sleeve head part 1 is small; the taper of the outer locking surface 201 is the same as that of the inner holding surface 12, and the two ends of the outer locking surface are small and the middle of the outer locking surface is large.
The inner clamping surface 202 of the clamping jaw 21 is an arc surface that is identical to the reinforcing bar 3, and when the inner clasping surface 12 presses the clamping jaw 21, the inner clamping surface 202 contracts to clamp the reinforcing bar 3.
The inner clamping surface 202 of the clamping claw 21 is provided with a plurality of rows of anti-loosening teeth 203, and the anti-loosening teeth 203 are in a sawtooth shape, so that the steel bars 3 can be effectively prevented from slipping and loosening.
When reinforcing bar 3 is in the operating mode under the pressure effect often, though interior enclasping face 12 and outer locking face 201 can the auto-lock, produce very big frictional force, for the reliability that improves the joint, can set up and prevent moving back the tooth. As shown in fig. 4, at least one chuck anti-back tooth 204 is disposed on the outer locking surface 201 of the clamping jaw 21, the anti-back tooth is a saw-toothed groove, and in a compressed state, the chuck anti-back tooth 204 is clamped on the sleeve head anti-back tooth 101, so that the joint is prevented from being loosened under the condition that the joint is pressed.
Example two
As shown in fig. 5 and 6: this embodiment two, a two clamping jaw 21 square reinforcing bar connecting pieces is provided, including cover head 1, cover head 1 makes hollow square pipe, there is interior holding face 12 inside, the one end of cover head 1 is chuck portion 2, chuck portion 2 has two clamping jaw 21 to constitute, two clamping jaw 21 evenly distributed are in the one end of cover head 1, in order to let clamping jaw 21 stretch into the interior holding face 12 of cover head 1, the interval between two clamping jaw 21 is not less than the width of clamping jaw 21, convert the contained angle into, every clamping jaw 21 contained angle is less than 90, clamping jaw 21 clearance just satisfies the requirement that is greater than 90 so.
The inner holding surface 12 of the steel bar connecting piece is an inclined surface, actually a drawing slope formed by a square bar plane according to a certain angle, when the steel bar 3 is square, the formed curved surface is an inclined surface, the size of one end close to the clamping claw 21 is large, and the size of the other end far away from the clamping claw 21 is small; the outer locking surface 201 of the clamping claw 21 is also an inclined surface, the size of one end close to the sleeve head part 1 is large, and the size of one end far away from the sleeve head part 1 is small; the outer locking surface 201 and the inner gripping surface 12 have the same inclination and are formed in a shuttle shape with two small ends and a large middle.
The inner clamping surface 202 of the clamping jaw 21 is a plane corresponding to the reinforcing bar 3, and when the inner clasping surface 12 presses the clamping jaw 21, the inner clamping surface 202 contracts to clamp the reinforcing bar 3.
The inner clamping surface 202 of the clamping claw 21 is provided with a plurality of rows of anti-loosening teeth 203, and the anti-loosening teeth 203 are in a sawtooth shape, so that the steel bars 3 can be effectively prevented from slipping and loosening.
As shown in fig. 6, after the upper and lower reinforcing bar connecting members move toward the middle, the clamping claw 21 of the upper reinforcing bar connecting member extends into the inner clamping surface 12 of the lower reinforcing bar connecting member, and the inner clamping surface 12 of the lower reinforcing bar connecting member presses the clamping claw 21 of the upper reinforcing bar connecting member, so that the inner clamping surface 12 in the clamping claw 21 presses the reinforcing bar 3, thereby completing the connection.
EXAMPLE III
As shown in fig. 7 and 8: this embodiment is three, a four clamping jaw 21 circular reinforcing bar connecting pieces is provided, including cover head 1, cover head 1 makes hollow pipe, there is interior holding face 12 inside, the one end of cover head 1 is chuck portion 2, chuck portion 2 has four clamping jaw 21 to constitute, four clamping jaw 21 evenly distributed are in the one end of cover head 1, hold face 12 in order to let clamping jaw 21 stretch into cover head 1, the interval between two clamping jaw 21 is not less than the width of clamping jaw 21, convert the contained angle into, every clamping jaw 21 contained angle is less than 45, clamping jaw 21 clearance just satisfies the requirement that is greater than 45 so.
The inner holding surface 12 of the steel bar connecting piece is a conical surface, actually the draft angle formed by the round surface of the steel bar 3 according to a certain angle, when the steel bar 3 is cylindrical, the formed curved surface is a conical surface, the size of the end close to the clamping claw 21 is large, and the size of the end far away from the clamping claw 21 is small; the outer locking surface 201 of the clamping claw 21 is also a conical surface, the size of one end close to the sleeve head part 1 is large, and the size of one end far away from the sleeve head part 1 is small; the taper of the outer locking surface 201 is the same as that of the inner holding surface 12, and the two ends of the outer locking surface are small and the middle of the outer locking surface is large.
The inner clamping surface 202 of the clamping jaw 21 is an arc surface that is identical to the reinforcing bar 3, and when the inner clasping surface 12 presses the clamping jaw 21, the inner clamping surface 202 contracts to clamp the reinforcing bar 3.
The inner clamping surface 202 of the clamping claw 21 is provided with a plurality of rows of anti-loosening teeth 203, and the anti-loosening teeth 203 are in a sawtooth shape, so that the steel bars 3 can be effectively prevented from slipping and loosening.
It can be seen from the above embodiment that the number of the clamping claws 21 is at least two, so that the clamping claws 21 can separately clamp the reinforcing steel bar 3, if there is one clamping claw 21, the opposite sleeve head 1 is also contacted with the reinforcing steel bar 3 and participates in clamping, and thus, under the condition of tension, the function of tightening the reinforcing steel bar is not realized.
The included angle of each clamping claw 21 is less than 180 degrees/claw number, in addition, the sleeve head part 1 is in a hollow tubular shape, and can bear larger expansion force and generate larger friction force in an annular shape.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without inventive changes from the above-described structures, and fall within the scope of the present invention.
Claims (7)
1. A reinforcing bar coupler, characterized in that, the reinforcing bar coupler comprises:
the sleeve head part is in a hollow tubular shape, the inner side of the sleeve head part is provided with an inner holding surface,
the clamping head part is connected with one end of the sleeve head part and consists of at least two clamping claws, the outer sides of the clamping claws are provided with outer locking surfaces, the inner sides of the clamping claws are inner clamping surfaces, the clamping claws are uniformly distributed at one end of the sleeve head part, and the distance between every two adjacent clamping claws is not less than the width of the clamping claws.
2. The reinforcing bar coupler according to claim 1, wherein the inner locking surface is a tapered surface, the outer locking surface is a tapered surface, and the taper of the inner locking surface is the same as that of the outer locking surface.
3. A reinforcing bar coupler according to claim 1, wherein said inner clamping surface has locking teeth, said locking teeth being serrated.
4. A reinforcing bar coupler according to claim 1, wherein the dimension intermediate the inner and outer locking surfaces is greater than the dimensions at the ends.
5. A reinforcing bar coupler according to claim 1, wherein the clamping jaw portion is composed of three clamping jaws.
6. A reinforcing bar coupler according to claim 1, wherein said inner locking surface is an inclined surface, said outer locking surface is an inclined surface, and the inclination of the inner locking surface is the same as that of the outer locking surface.
7. A reinforcing bar coupler according to claim 1, wherein the outer locking surface is provided with chuck anti-withdrawal teeth, and the chuck anti-withdrawal teeth are saw-toothed grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021861810.3U CN212248914U (en) | 2020-09-01 | 2020-09-01 | Steel bar connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021861810.3U CN212248914U (en) | 2020-09-01 | 2020-09-01 | Steel bar connecting piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212248914U true CN212248914U (en) | 2020-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021861810.3U Active CN212248914U (en) | 2020-09-01 | 2020-09-01 | Steel bar connecting piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212248914U (en) |
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2020
- 2020-09-01 CN CN202021861810.3U patent/CN212248914U/en active Active
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