CN104264997A - Novel steel bar connection device - Google Patents

Novel steel bar connection device Download PDF

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Publication number
CN104264997A
CN104264997A CN201410517226.9A CN201410517226A CN104264997A CN 104264997 A CN104264997 A CN 104264997A CN 201410517226 A CN201410517226 A CN 201410517226A CN 104264997 A CN104264997 A CN 104264997A
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CN
China
Prior art keywords
reinforcing bar
disk body
sub
rotating cylinder
steel bar
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410517226.9A
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Chinese (zh)
Inventor
鲁雪华
谭斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FENGDU LEILONG METAL COMPONENT Co Ltd
Original Assignee
FENGDU LEILONG METAL COMPONENT Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FENGDU LEILONG METAL COMPONENT Co Ltd filed Critical FENGDU LEILONG METAL COMPONENT Co Ltd
Priority to CN201410517226.9A priority Critical patent/CN104264997A/en
Publication of CN104264997A publication Critical patent/CN104264997A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a novel steel bar connection device. The novel steel bar connection device comprises a plate body, a driving gear and a rotating drum; the driving gear is arranged on the plate body in a rotating mode; the rotating drum is arranged in a supporting hole of the plate body in a rotating mode; the periphery of the rotating drum is provided with a driven gear which is meshed with the driving gear; the center of the rotating drum is provided with a clamping hole which is axially communicated; the clamping hole is used for fixing rotating end steel bars. According to the novel steel bar connection device, the structure is simple, the performance is reliable, the steel bar connection can be rapidly and conveniently achieved, the labor intensity of workers can be reduced, and the working efficiency can be improved.

Description

A kind of new reinforcing steel bar linkage
Technical field
The present invention relates to a kind of device utilizing sleeve connection to get up two reinforcing bars.
Background technology
In building trade, traditional bar connecting has the mode such as overlap joint, welding, but no matter all can not meet from quality of connection, efficiency or operability the demand that builing industry develops rapidly.In the last few years, the female reinforcing steel bar connecting sleeve tube of tool is utilized to be widely applied in the mode of reinforcing bar of connecting, a kind of branch sleeve disclosed in patent CN201915561U, two reinforcing bars are tightened on the two ends of reinforcing steel bar connecting sleeve tube respectively, thus realize two reinforcing bar docking along its length.But in constructing at the scene at present, the connection of reinforcing bar and sleeve is all manually completed with spanner by workman, labour intensity is very large, by the restriction of operating space, workman, after operation spanner twisting certain angle, must unclamp the clamping of spanner to reinforcing bar, turn round an angle again, again clamp reinforcing bar again, so reciprocal twisted bar, reinforcing bar and sleeve are tightened the most at last, therefore waste time and energy, efficiency is extremely low.Therefore, a kind of automation equipment that external power supply can be utilized to realize bar connecting is needed at present badly.
Summary of the invention
The object of the present invention is to provide a kind of new reinforcing steel bar linkage, its structure be simple, dependable performance, bar connecting can be completed quickly and easily, reduce labor strength, increase work efficiency.
New reinforcing steel bar linkage of the present invention, comprise disk body, driving gear and rotating cylinder, described driving gear is rotating to be arranged on described disk body, in the rotating supported hole being located at described disk body of described rotating cylinder, the driven gear engaged with described driving gear is provided with in the periphery of rotating cylinder, described rotating cylinder center is provided with axially through blocked hole, and described blocked hole is used for fixing with turning end reinforcing bar.
Described driving gear is located at one end of driving shaft, and its other end is moment input end;
Further, described moment input end is interior angle or exterior angle tube-in-tube structure.
Also comprise the fixed end reinforcing bar locking unit be connected with described disk body, described fixed end reinforcing bar locking unit is used for being fixedly connected with fixed end reinforcing bar.
Further, described disk body is by being connected with described fixed end reinforcing bar locking unit with the connecting rod that blocked hole axis parallels, and described connecting rod is fixed on described fixed end reinforcing bar locking unit, and described disk body can be arranged on described connecting rod in axial sliding.
Further, described fixed end reinforcing bar locking unit comprises linking arm and hold claw component, and described connecting rod is fixed on described linking arm, described in hold claw component and be located at linking arm front end, for the end bar that is fixedly clamped.
Further, that holds the removable adjustment of claw component described in establishes on the connecting arm, to make the fastening fixed end reinforcing bar be in one's hands in claw component coaxial with the turning end reinforcing bar in described blocked hole.
Further, described in hold claw component and comprise holding pawl body and arranging and hold the pressure strip at pawl body openings place, hold in pawl body described in fixed end reinforcing bar can be pressed on by described pressure strip.
Described disk body is made up of two sub-disk bodies, and both can open or enclose fixing relatively.
Further, one end of described two sub-disk bodies is hinged, is provided with locking mechanism at the folding end of two sub-disk bodies, and described locking mechanism can keep the closure state of two sub-disk bodies.
Further, described locking mechanism comprises the connecting screw rod being located at a wherein sub-disk body folding end margin and the link slot corresponding with described connecting screw rod position be located on another sub-disk body, what described connecting screw rod was swingable is located on described sub-disk body, is connected with threaded fastener in described connecting screw rod front end.
Described rotating cylinder is made up of two semicircular auxiliary cylinder bodies, and both can open or dock and be integrated.
Further, the interface of described two auxiliary cylinder bodies is respectively equipped with clamping projection and buckling groove, two described sub-cylindrical shells are integrated by the protruding docking chimeric with buckling groove of described clamping.
Described rotating cylinder is provided with turning end reinforcing bar locking member, to be fastened in blocked hole by turning end reinforcing bar, described turning end reinforcing bar is synchronized with the movement with rotating cylinder.
Further, described turning end reinforcing bar locking member is that radial direction is screwed in rotating cylinder holds out against screw, and it can move in described blocked hole, to hold out against described turning end reinforcing bar.
The blocked hole inner circumferential of described rotating cylinder is furnished with latch.
The end face of described rotating cylinder is provided with limited ring groove, and a sub-disk body is provided with limiting plate wherein, and the front end of described limiting plate is buckled in described limited ring groove.
Described connecting rod is arranged with spring.
Described driving gear is arranged in the counterbore of described disk body and by end cap axial restraint, the side of counterbore communicates with supported hole, realizes engaging of driving gear and driven gear.
By reinforcing steel bar connecting device of the present invention, bar connecting can be completed quickly and easily, and labor strength can be reduced greatly, improve operating efficiency, ensure that bar connecting quality.In addition, the execute-in-place of this device is high, high safety, dependable performance, and structure is simple, with low cost.
Accompanying drawing explanation
Fig. 1 is the three-dimensional view of this device;
Fig. 2 is the three-dimensional view of described disk body in open mode;
Fig. 3 is the three-dimensional view of described driving shaft;
Fig. 4 is the three-dimensional view of described rotating cylinder at closure state;
Fig. 5 is the top view of shown rotating cylinder in open mode;
Fig. 6 is the using state three-dimensional view of this device;
Fig. 7 is the front view of Fig. 6;
Fig. 8 is the rear elevation of Fig. 6.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further elaborated, and following examples only for explaining the present invention, do not form limiting the scope of the present invention.
New reinforcing steel bar linkage as shown in Fig. 1, Fig. 6, Fig. 7, Fig. 8, comprises disk body 1, driving shaft 3, fixed end reinforcing bar locking unit 4, connecting rod 5 and rotating cylinder 2.
Described fixed end reinforcing bar locking unit 4 is for being fixedly connected with fixed end reinforcing bar 7, and described rotating cylinder 2 rotates for driving the turning end reinforcing bar 8 intending assembling, thus by two bar connecting on reinforcing steel bar connecting sleeve tube 9.
Namely described fixed end reinforcing bar 7 refers to this root reinforcing bar relatively fixed, for convenience of understanding, fixed end reinforcing bar in the present embodiment can be considered as be fixed in concrete vertically, and namely turning end reinforcing bar 8 is another root reinforcing bar wishing vertically to be connected to fixed end reinforcing bar top.
See Fig. 3, be provided with driving gear 301 in the lower end of described driving shaft 3, its top is moment input end.Moment input end be used for by external drive moment introduce, in the present embodiment, the moment input end of driving shaft is corner tube-in-tube structure 302 in, workman manually or automated tool by moment of torsion by described interior corner sleeve effect on the driving shaft.Described driving gear is arranged in the counterbore of described first sub-disk body 101 and by end cap 109 axial restraint, the side of counterbore communicates with supported hole, realizes engaging of driving gear and driven gear.
See Fig. 4, in the rotating supported hole being located at described disk body 1 of described rotating cylinder 2, be provided with the driven gear 201 engaged with described driving gear 301 in the periphery of rotating cylinder 2, described rotating cylinder center is provided with axially through blocked hole 202, and described blocked hole is used for fixing with turning end reinforcing bar.
Visible, the gears meshing position in this device is all positioned at disk body inside, and when avoiding operating, workman's finger or clothes are involved in wherein, ensure that security performance.
Gear pair in the present embodiment is cylindrical straight gear wheel set, and namely the axis of rotating cylinder and driving shaft parallels.Certainly, straight bevel gear also can be adopted secondary, make driving shaft layout in horizontal direction, make workman can use pneumatic impact spanner in the horizontal direction, to adapt to different site operation environmental requirements.
Because the length of conventional building iron is all longer, conveniently workman's being assemblied in this device radial direction on reinforcing bar, and need not be inserted in from axle head.Described disk body 1 is made up of two sub-disk bodies, is respectively on the first sub-disk body 101 and the second sub-disk body 102, two sub-disk bodies and has semicircular support cambered surface respectively.One end of described two sub-disk bodies is hinged, and both can open or enclose fixing relatively, and when enclosing, two semicircle cambered surfaces that support form the described supported hole for accommodating rotating cylinder.
See Fig. 2, locking mechanism is provided with at the folding end of two sub-disk bodies, described locking mechanism can keep the closure state of two sub-disk bodies, described locking mechanism comprises the connecting screw rod 104 being located at the first sub-disk body 101 folding end margin and the link slot 105 corresponding with described screw position be located on the second sub-disk body, what described connecting screw rod was swingable is located on the first sub-disk body, is connected with the inner thread sleeve 106 of band handle in described connecting screw rod front end.When needs locking two sub-disk body, described connecting screw rod 104 is inwardly turned in link slot 105, then screw described inner thread sleeve 106 and just achieve the fixing fast of two sub-disk bodies.
For ensureing the positioning precision of two subcard disk bodies, the interface of described two sub-disk bodies is provided with the alignment pin 107 and locating hole 108 that match.Time closed, described alignment pin is inserted in locating hole.
See Fig. 5, described rotating cylinder 2 is made up of two semicircular auxiliary cylinder bodies 203, both can open or dock and be integrated, the interface of described two auxiliary cylinder bodies 203 is respectively equipped with clamping protruding 204 and buckling groove 205, two described sub-cylindrical shells are integrated by the protruding docking chimeric with buckling groove of described clamping.
For ensureing fixedly securing of blocked hole 202 pairs of reinforcing bars, the blocked hole inner circumferential of described rotating cylinder is furnished with latch 206.
Described rotating cylinder is provided with turning end reinforcing bar locking member, so that turning end reinforcing bar is fastened in blocked hole 202, in the present embodiment, described turning end reinforcing bar locking member is that radial direction is screwed in one of them auxiliary cylinder body 203 holds out against screw 207, it can move in described blocked hole, to hold out against described turning end reinforcing bar.
The end face of described rotating cylinder 2 is provided with the limited ring groove 208 coaxial with blocked hole, the first sub-disk body 101 is provided with limiting plate 103, the front end of described limiting plate 103 is buckled in described limited ring groove 208.When dismantling, open the second sub-disk body 102, when taking off after one of them auxiliary cylinder body 203 removes reinforcing bar, a remaining sub-cylindrical shell can hang on the first sub-disk body, just the connection of another group reinforcing bar can be directly used in, and two sub-cylindrical shells all need not be taken off, easy operation, make a workman can complete independently.
Described first sub-disk body 101 is by being connected with described fixed end reinforcing bar locking unit with two cylindrical connecting rods 5 that blocked hole axis parallels.Described connecting rod 5 is fixed on described fixed end reinforcing bar locking unit 4, described disk body 1 can be sleeved on described connecting rod in axial sliding, and spring 6 is arranged with on described connecting rod, conflict with fixed end reinforcing bar locking unit and the first sub-disk body respectively in its two ends, for when being assembled with reinforcing bar by this device, keep the position of disk body.
Described fixed end reinforcing bar locking unit 4 comprises linking arm 401 and holds claw component, and described connecting rod is fixed on described linking arm, described in hold claw component and be located at linking arm front end, for the end bar that is fixedly clamped.
Described claw component of holding comprises and holds pawl body 402 and arrange the pressure strip 403 holding the arc at pawl body openings place, holds in pawl body described in described pressure strip can be pressed in tight for fixed end reinforcing bar 7.In the present embodiment, described pressure strip is connected on the screw mandrel 404 of a band handle, by rotating this screw mandrel, make described pressure strip towards or hold pawl body dorsad and move.
Be subject to the different-diameter of different reinforcing bar and the impact of irregular external surface, may occur fixed end reinforcing bar and turning end reinforcing bar out-of-alignment problem after mounting, the position of therefore holding claw component in this device can be finely tuned.Namely holding pawl body described in is plugged in the installing hole of described linking arm by the installation screw rod 405 of two horizontal directions, and locking nut 406 is set respectively at installing hole two ends, by regulating described two length of installing screw rod 405 insertion then fixing to top with described locking nut 406.Hold claw component and fixed end bar connecting due to described, play the effect of grappling.Therefore described claw component of holding is set to the relative adjustment that adjustable object is the horizontal level of the disk body achieving top, i.e. the relative adjustment of the upright projection position of the blocked hole of rotating cylinder.Make the fastening fixed end reinforcing bar be in one's hands in claw component coaxial with the turning end reinforcing bar in described blocked hole.
Geared parts in this device be all detachable replace be arranged on disk body, one is the rotating cylinder can selecting corresponding internal diameter according to different bar diameters, and two is the replacings achieving gear wearing detail, reduces use cost.
When utilizing pneumatic impact spanner to carry out the bar connecting of vertical direction by said apparatus, first reinforcing steel bar connecting sleeve tube 9 is screwed in the top of fixed end reinforcing bar 7, described reinforcing steel bar connecting sleeve tube can not exclusively screw, operator directly can twist several with hand a little even, then turning end reinforcing bar 8 is inserted in the internal thread hole place of the upper end of described reinforcing steel bar connecting sleeve tube.Open described disk body 1, one of them auxiliary cylinder body 203 is rotated in access first sub-disk body 101, then leaned against on turning end reinforcing bar outer peripheral face.Another auxiliary cylinder body slips into along top axial by and buckling groove protruding by described clamping again, and two sub-cylindrical shells 203 are fitted together to and constitute described rotating cylinder 2, make turning end reinforcing bar 8 be positioned at the blocked hole 202 of described rotating cylinder.Then close the second sub-disk body 102 and lock, then the screw 207 that holds out against on rotating cylinder being tightened, just complete the assembling to turning end reinforcing bar.The opening radial direction of holding pawl body described in then being utilized by fixed end reinforcing bar 7 is inserted and is locked by described pressure strip 403, just completes the assembling to fixed end reinforcing bar.Operator uses pneumatic impact spanner to drive the quick rotation of driving shaft by corner tube-in-tube structure on driving shaft, described rotating cylinder is driven to rotate by gear drive, thus drive the turning end reinforcing bar fixing with rotating cylinder to rotate, make in the continuous precession reinforcing steel bar connecting sleeve tube in its lower end, whole disk body is also along connecting rod downward translation one end distance simultaneously.After the silk tooth of turning end reinforcing bar is rotated in place completely, the turning end reinforcing bar continuing to rotate can drive reinforcing steel bar connecting sleeve tube to rotate, and also makes the fixed end reinforcing bar below it screw completely.Finally, open disk body and rotating cylinder, and untie and hold claw component, just achieve the dismounting of this device and reinforcing bar.Visible, this covering device makes workman that the automation moment of torsion output instruments such as pneumatic impact spanner can be utilized to realize the connection of reinforcing bar, and labour intensity reduces greatly, and operating efficiency significantly improves.

Claims (10)

1. a new reinforcing steel bar linkage, it is characterized in that: comprise disk body, driving gear and rotating cylinder, described driving gear is rotating to be arranged on described disk body, in the rotating supported hole being located at described disk body of described rotating cylinder, the driven gear engaged with described driving gear is provided with in the periphery of rotating cylinder, described rotating cylinder center is provided with axially through blocked hole, and described blocked hole is used for fixing with turning end reinforcing bar.
2. new reinforcing steel bar linkage according to claim 1, is characterized in that: described driving gear is located at one end of driving shaft, its other end is moment input end;
Further, described moment input end is interior angle or exterior angle tube-in-tube structure.
3. new reinforcing steel bar linkage according to claim 1, is characterized in that: also comprise the fixed end reinforcing bar locking unit be connected with described disk body, and described fixed end reinforcing bar locking unit is used for being fixedly connected with fixed end reinforcing bar;
Further, described disk body is by being connected with described fixed end reinforcing bar locking unit with the connecting rod that blocked hole axis parallels, and described connecting rod is fixed on described fixed end reinforcing bar locking unit, and described disk body can be arranged on described connecting rod in axial sliding;
Further, described fixed end reinforcing bar locking unit comprises linking arm and hold claw component, and described connecting rod is fixed on described linking arm, described in hold claw component and be located at linking arm front end, for the end bar that is fixedly clamped;
Further, that holds the removable adjustment of claw component described in establishes on the connecting arm, to make the fastening fixed end reinforcing bar be in one's hands in claw component coaxial with the turning end reinforcing bar in described blocked hole;
Further, described in hold claw component and comprise holding pawl body and arranging and hold the pressure strip at pawl body openings place, hold in pawl body described in fixed end reinforcing bar can be pressed on by described pressure strip.
4. the new reinforcing steel bar linkage according to claim 1 or 2 or 3, is characterized in that: described disk body is made up of two sub-disk bodies, and both can open or enclose fixing relatively;
Further, one end of described two sub-disk bodies is hinged, is provided with locking mechanism at the folding end of two sub-disk bodies, and described locking mechanism can keep the closure state of two sub-disk bodies;
Further, described locking mechanism comprises the connecting screw rod being located at a wherein sub-disk body folding end margin and the link slot corresponding with described connecting screw rod position be located on another sub-disk body, what described connecting screw rod was swingable is located on described sub-disk body, is connected with threaded fastener in described connecting screw rod front end.
5. new reinforcing steel bar linkage according to claim 4, is characterized in that: described rotating cylinder is made up of two semicircular auxiliary cylinder bodies, and both can open or dock and be integrated;
Further, the interface of described two auxiliary cylinder bodies is respectively equipped with clamping projection and buckling groove, two described sub-cylindrical shells are integrated by the protruding docking chimeric with buckling groove of described clamping.
6. new reinforcing steel bar linkage according to claim 5, is characterized in that: on described rotating cylinder, be provided with turning end reinforcing bar locking member, to be fastened in blocked hole by turning end reinforcing bar, described turning end reinforcing bar is synchronized with the movement with rotating cylinder;
Further, described turning end reinforcing bar locking member is that radial direction is screwed in rotating cylinder holds out against screw, and it can move in described blocked hole, to hold out against described turning end reinforcing bar.
7. the new reinforcing steel bar linkage according to claim 5 or 6, is characterized in that: the blocked hole inner circumferential of described rotating cylinder is furnished with latch.
8. the new reinforcing steel bar linkage according to claim 5 or 6, is characterized in that: on the end face of described rotating cylinder, be provided with limited ring groove, and a sub-disk body is provided with limiting plate wherein, and the front end of described limiting plate is buckled in described limited ring groove.
9. new reinforcing steel bar linkage according to claim 3, is characterized in that: on described connecting rod, be arranged with spring.
10. new reinforcing steel bar linkage according to claim 2, is characterized in that: described driving gear is arranged in the counterbore of described disk body and by end cap axial restraint, the side of counterbore communicates with supported hole, realizes engaging of driving gear and driven gear.
CN201410517226.9A 2014-09-30 2014-09-30 Novel steel bar connection device Pending CN104264997A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104707923A (en) * 2015-03-17 2015-06-17 丰都县雷龙金属构件有限公司 Novel reinforcing steel bar tightening connecting machine
CN105113800A (en) * 2015-08-20 2015-12-02 张建林 Assembling tool for connecting reinforcing steel bar and swivel nut
CN106760225A (en) * 2016-12-14 2017-05-31 上海建工二建集团有限公司 A kind of straight screw sleeve connection device and its application method
CN108435990A (en) * 2018-03-28 2018-08-24 庄平凡 A kind of building materials automatic spacing process equipment
CN110080536A (en) * 2019-05-29 2019-08-02 何艳 A kind of reinforcing bar rotation connection method based on straight screw sleeve connection
CN110499756A (en) * 2019-08-09 2019-11-26 中建三局第一建设工程有限责任公司 Borehole filling pile cage of reinforcement automatic butt jointing device and interconnection method
CN111593893A (en) * 2020-06-03 2020-08-28 郑州梦铭机械科技有限公司 Building steel sleeve connecting equipment
CN111677289A (en) * 2020-06-04 2020-09-18 中交路桥建设有限公司 Electric screwing tool for reinforcing steel bar splicing sleeve
CN113389389A (en) * 2021-05-25 2021-09-14 中国一冶集团有限公司 Righting device for screwing up sleeve connection steel bar
EP4375445A1 (en) * 2022-11-22 2024-05-29 Illinois Tool Works Inc. Apparatus for connecting reinforcement

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010007248A (en) * 2008-06-24 2010-01-14 Shimizu Corp Prestress tension device and tensioning force control method using the same
CN104047399A (en) * 2014-07-11 2014-09-17 鲁雪华 Steel bar connection device
CN204081522U (en) * 2014-09-30 2015-01-07 丰都县雷龙金属构件有限公司 A kind of new reinforcing steel bar linkage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010007248A (en) * 2008-06-24 2010-01-14 Shimizu Corp Prestress tension device and tensioning force control method using the same
CN104047399A (en) * 2014-07-11 2014-09-17 鲁雪华 Steel bar connection device
CN204081522U (en) * 2014-09-30 2015-01-07 丰都县雷龙金属构件有限公司 A kind of new reinforcing steel bar linkage

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104707923A (en) * 2015-03-17 2015-06-17 丰都县雷龙金属构件有限公司 Novel reinforcing steel bar tightening connecting machine
CN105113800A (en) * 2015-08-20 2015-12-02 张建林 Assembling tool for connecting reinforcing steel bar and swivel nut
CN106760225A (en) * 2016-12-14 2017-05-31 上海建工二建集团有限公司 A kind of straight screw sleeve connection device and its application method
CN108435990A (en) * 2018-03-28 2018-08-24 庄平凡 A kind of building materials automatic spacing process equipment
CN110080536A (en) * 2019-05-29 2019-08-02 何艳 A kind of reinforcing bar rotation connection method based on straight screw sleeve connection
CN110499756B (en) * 2019-08-09 2022-06-07 中建三局第一建设工程有限责任公司 Automatic butt joint device and method for bored pile reinforcement cage
CN110499756A (en) * 2019-08-09 2019-11-26 中建三局第一建设工程有限责任公司 Borehole filling pile cage of reinforcement automatic butt jointing device and interconnection method
CN111593893A (en) * 2020-06-03 2020-08-28 郑州梦铭机械科技有限公司 Building steel sleeve connecting equipment
CN111677289A (en) * 2020-06-04 2020-09-18 中交路桥建设有限公司 Electric screwing tool for reinforcing steel bar splicing sleeve
CN111677289B (en) * 2020-06-04 2022-07-15 中交路桥建设有限公司 Electric screwing tool for reinforcing steel bar splicing sleeve
CN113389389A (en) * 2021-05-25 2021-09-14 中国一冶集团有限公司 Righting device for screwing up sleeve connection steel bar
EP4375445A1 (en) * 2022-11-22 2024-05-29 Illinois Tool Works Inc. Apparatus for connecting reinforcement
WO2024112765A1 (en) * 2022-11-22 2024-05-30 Illinois Tool Works Inc. Apparatus for connecting reinforcement

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Application publication date: 20150107