CN110202689B - Hydraulic pliers for connecting reinforcing steel bars - Google Patents

Hydraulic pliers for connecting reinforcing steel bars Download PDF

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Publication number
CN110202689B
CN110202689B CN201910611214.5A CN201910611214A CN110202689B CN 110202689 B CN110202689 B CN 110202689B CN 201910611214 A CN201910611214 A CN 201910611214A CN 110202689 B CN110202689 B CN 110202689B
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Prior art keywords
steel bar
chuck
connecting steel
clamping arm
hydraulic
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CN201910611214.5A
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CN110202689A (en
Inventor
彭宝安
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Yellow River Ji'nan Special Steel Co Ltd
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Hubei Size New Energy Technology Co ltd
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Priority to PCT/CN2020/098568 priority patent/WO2021004308A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • 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
    • E04C5/18—Spacers of metal or substantially of metal

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

The invention discloses a hydraulic clamp for connecting reinforcing steel bars, which is mainly used for connecting the reinforcing steel bars in the field of constructional engineering, is simple and quick in construction, and saves the material cost; it mainly includes arm lock, lower arm lock, goes up the chuck, lower chuck, pneumatic cylinder, hydraulic piston, and its theory of operation is: the pair of handles are spread, the upper chuck and the lower chuck are opened, the upper connecting steel bar and the lower connecting steel bar are placed between the upper chuck and the lower chuck, the pair of handles are closed to enable the upper connecting steel bar and the lower connecting steel bar to be contacted with each other, then the hydraulic handle is shaken to enable the hydraulic piston to extend and drive the upper chuck and the lower chuck to extrude the upper connecting steel bar and the lower connecting steel bar, the transverse sections of the upper connecting steel bar and the lower connecting steel bar are extruded into symmetrical trapezoids, meanwhile, the longitudinal sections of the upper connecting steel bar and the lower connecting steel bar are extruded into convex-concave alternate shapes, and the steel bar connection work is finished.

Description

Hydraulic pliers for connecting reinforcing steel bars
Technical Field
The invention is mainly used for connecting reinforcing steel bars in the field of constructional engineering.
Background
The existing steel bar connecting method applied or used in the building field basically comprises welding, binding connection and threaded connection, wherein the binding connection requires longer lap joint length of the connected steel bars and is not firm in connection, the connection performance of the welding and threaded connection is superior, the connection length is short, but the construction is troublesome, and the labor and the time are consumed.
Disclosure of Invention
The invention solves the problems that the connection strength is much better than the binding connection of the steel bars, the lapping length of the steel bars is only one third of the binding connection, although the connection strength of the invention is slightly less than the welding and the threaded connection, the construction is simple and quick, and the labor cost and the material cost are saved; the invention relates to a hydraulic clamp for pressing two steel bars to be connected into a convex-concave alternate shape, which mainly comprises an upper clamping arm (1), a lower clamping arm (2), an upper clamping head (3), a lower clamping head (4), a handle (5), a hydraulic cylinder (6), a hydraulic piston (7) and a hydraulic handle (10), wherein the upper clamping head (3) is fixed with the left end of the lower clamping arm (2), the lower handle (5) is fixed with the right end of the lower clamping arm (2), the lower clamping head (4) is fixed with the left end of the upper clamping arm (1), the upper handle (5) is fixed with the right end of the upper clamping arm (1), the transverse section of the upper clamping head (3) is provided with a trapezoid groove A (8) with a small upper part and a large lower part, the longitudinal section of the upper clamping head (3) is provided with a plurality of upper grooves (16) with equal intervals, a lower convex part (17) is formed between the adjacent upper grooves (16), the transverse section of the lower clamping head, the longitudinal section of the lower chuck (4) is provided with a plurality of lower grooves (18) with equal intervals, an upper convex part (11) is formed between the adjacent lower grooves (18), the right part of the lower clamping arm (2) is provided with a stop surface (19), the upper clamping arm (1) and the lower clamping arm (2) are connected through a hinge (14), the mutual rotation of the right ends of the upper clamping arm (1) and the lower clamping arm (2) drives the upper chuck (3) and the lower chuck (4) to open and close, a horizontally arranged hydraulic cylinder (6) is fixed with the left part of the lower clamping arm (2) and is positioned at the left side of the hinge (14), a piston head of a hydraulic piston (7) points to the stop surface (19) of the lower clamping arm (2), the hydraulic cylinder (6) is provided with a hydraulic handle (10), and the hydraulic piston (7) moves rightwards and can be propped against the stop surface (19) at the right end of the lower; the working principle of the hydraulic clamp is as follows: firstly, coating lubricating oil on the inner surface of a trapezoidal groove A (8) of an upper chuck (3) and coating lubricating oil on the inner surface of a trapezoidal groove B (9) of a lower chuck (4), simultaneously coating adhesive (15) on the opposite surfaces of an upper connecting steel bar (12) and a lower connecting steel bar (13), then spreading a pair of handles (5) to open the upper chuck (3) and the lower chuck (4), placing the upper connecting steel bar (12) and the lower connecting steel bar (13) between the upper chuck (3) and the lower chuck (4), closing the pair of handles (5) to enable the upper connecting steel bar (12) and the lower connecting steel bar (13) to be contacted with each other, then shaking a hydraulic handle (10), extending a hydraulic piston (7) to prop against a stop surface (19) at the right end of the lower clamping arm (2), continuing to shake the hydraulic handle (10), continuing to extend the hydraulic piston (7) and driving the right ends of the upper clamping arm (1) and the lower clamping arm (2) to rotate inwards, simultaneously, the left ends of the upper clamping arm (1) and the lower clamping arm (2) are driven to rotate inwards, the upper chuck (3) and the lower chuck (4) extrude upper connecting steel bars (12) and lower connecting steel bars (13), the transverse sections of the upper connecting steel bars (12) and the lower connecting steel bars (13) are extruded to be symmetrical trapezoids, the longitudinal sections of the upper connecting steel bars (12) and the lower connecting steel bars (13) are extruded to be convex-concave alternate shapes, then oil discharge valves of the hydraulic cylinders (6) are released, the hydraulic pistons (7) retract, then a pair of handles (5) are opened to open the upper chuck (3) and the lower chuck (4), the upper chuck (3) and the lower chuck (4) are easily separated from the surfaces of the upper connecting steel bars (12) and the lower connecting steel bars (13) under the action of lubricating oil on the inner surfaces of the upper chuck (3) and the lower chuck (4), and meanwhile, the upper connecting steel bars (12) and the lower connecting steel bars, The adhesive effect of the adhesive (15) on the opposite surface of the lower connecting steel bar (13) prevents the upper connecting steel bar (12) and the lower connecting steel bar (13) after extrusion forming from being separated from each other, concrete is poured after the steel bar connection work is finished, and after the concrete reaches the strength, the left and right connecting steel bars can better resist the tensile stress on the left and right sides due to the gripping effect of the concrete and the embedding effect of the concrete filled in the plurality of concave parts of the upper connecting steel bar (12) and the lower connecting steel bar (13) after connection.
Drawings
1-upper clamping arm, 2-lower clamping arm, 3-upper clamping head, 4-lower clamping head, 5-handle, 6-hydraulic cylinder, 7-hydraulic piston, 8-trapezoidal groove A, 9-trapezoidal groove B, 10-hydraulic handle, 11-upper convex, 12-upper connecting steel bar, 13-lower connecting steel bar, 14-hinge, 15-adhesive, 16-upper groove, 17-lower convex, 18-lower groove and 19-stop surface.
Fig. 1 is a schematic view of a hydraulic tong squeezing rebar.
Fig. 2 is a schematic view of the upper and lower jaws of the hydraulic pliers in an open state.
Fig. 3 is a cross-sectional view a-a of a hydraulic clamp pressing a rebar.
Fig. 4 is a schematic view of the upper and lower connecting bars when the transverse section thereof is crushed.
Fig. 5 is a schematic view of the upper and lower connecting bars after the transverse cross-section has been extruded.
Fig. 6 is a cross-sectional view a-a of the upper and lower chucks.
Fig. 7 is a transverse cross-sectional view of the upper and lower jaws.
Detailed Description
Referring to fig. 1 to 7, firstly, the inner surface of the trapezoidal groove A8 of the upper collet 3 is coated with lubricating oil, the inner surface of the trapezoidal groove B9 of the lower collet 4 is coated with lubricating oil, meanwhile, the opposite surfaces of the upper connecting steel bar 12 and the lower connecting steel bar 13 are coated with the adhesive 15, then the pair of handles 5 are spread to open the upper collet 3 and the lower collet 4, and the upper connecting steel bar 12 and the lower connecting steel bar 13 are placed between the upper collet 3 and the lower collet 4, then the pair of handles 5 are closed to make the upper connecting steel bar 12 and the lower connecting steel bar 13 contact with each other, then the hydraulic handles 10 are shaken, the hydraulic piston 7 extends and props against the stop surface 19 at the right end of the lower clamping arm 2, the hydraulic handles 10 are continuously shaken, the hydraulic piston 7 continuously extends and drives the right ends of the upper clamping arm 1 and the lower clamping arm 2 to rotate inwards, and simultaneously drives the left ends of the upper clamping, the upper chuck 3 and the lower chuck 4 extrude the upper connecting steel bar 12 and the lower connecting steel bar 13 to extrude the transverse sections of the upper connecting steel bar 12 and the lower connecting steel bar 13 into symmetrical trapezoids, and simultaneously extrude the longitudinal sections of the upper connecting steel bar 12 and the lower connecting steel bar 13 into convex-concave alternate shapes, then the oil drain valve of the hydraulic cylinder 6 is loosened, the hydraulic piston 7 is retracted, then the pair of handles 5 is opened to expand the upper chuck 3 and the lower chuck 4, due to the action of lubricating oil on the inner surfaces of the upper chuck 3 and the lower chuck 4, the upper chuck 3 and the lower chuck 4 are easy to separate from the surfaces of the upper connecting steel bar 12 and the lower connecting steel bar 13, and due to the bonding effect of the adhesive 15 on the opposite surfaces of the upper connecting steel bar 12 and the lower connecting steel bar 13, the upper connecting steel bar 12 and the lower connecting steel bar 13 after extrusion forming can not separate from each other, and concrete is, after the concrete reaches the strength, the left and right connecting steel bars can better resist the tensile stress of the left and right sides due to the gripping action of the concrete and the embedding action of the concrete filled in the plurality of concave parts of the connected upper connecting steel bar 12 and the lower connecting steel bar 13. Need to explain: the trapezoidal groove A8 of the upper chuck 3 is designed to be trapezoidal, and the trapezoidal groove B9 of the lower chuck 4 is designed to be trapezoidal, so that the steel bars connected up and down can be conveniently clamped in, and the pressed and formed connecting steel bars can be conveniently separated from the upper chuck 3 and the lower chuck 4; if the overlapping length of two reinforcing bars to be connected is limited, and the connecting strength of the two reinforcing bars to be connected does not need to be high, for example: the connecting length of the connecting steel bars is limited by the connection of the reserved steel bars between the two precast slabs in the longitudinal direction, and the connection of the reserved steel bars between the two precast slabs in the longitudinal direction is only structural connection and is not stress steel bar connection.

Claims (1)

1. The utility model provides a hydraulic tong of connecting reinforcing bar which characterized by: the clamping device mainly comprises an upper clamping arm (1), a lower clamping arm (2), an upper chuck (3), a lower chuck (4), a handle (5), a hydraulic cylinder (6), a hydraulic piston (7) and a hydraulic handle (10), wherein the upper chuck (3) is fixed with the left end of the lower clamping arm (2), the lower handle (5) is fixed with the right end of the lower clamping arm (2), the lower chuck (4) is fixed with the left end of the upper clamping arm (1), the upper handle (5) is fixed with the right end of the upper clamping arm (1), the transverse section of the upper chuck (3) is provided with a trapezoid groove A (8) with a large upper part and a small lower part, the longitudinal section of the upper chuck (3) is provided with a plurality of upper grooves (16) with equal intervals, a lower convex shape (17) is formed between the adjacent upper grooves (16), the transverse section of the lower chuck (4) is provided with a trapezoid groove B (9) with a large upper part and a small lower part, the longitudinal section of the lower, an upper convex part (11) is formed between adjacent lower grooves (18), a stop surface (19) is arranged at the right part of the lower clamping arm (2), the upper clamping arm (1) and the lower clamping arm (2) are connected through a hinge (14), the upper clamping arm (1) and the lower clamping arm (2) are mutually rotated to drive the upper chuck (3) and the lower chuck (4) to be opened and closed, a horizontally arranged hydraulic cylinder (6) is fixed with the left part of the lower clamping arm (2) and is positioned at the left side of the hinge (14), the piston head of a hydraulic piston (7) points to the stop surface (19) of the lower clamping arm (2), the hydraulic cylinder (6) is provided with a hydraulic handle (10), and the hydraulic handle (10) is shaken to enable the hydraulic piston (7) to move rightwards and can prop against the stop surface (19) at the right end of the lower; the working principle of the hydraulic clamp is as follows: firstly, coating lubricating oil on the inner surface of a trapezoidal groove A (8) of an upper chuck (3) and coating lubricating oil on the inner surface of a trapezoidal groove B (9) of a lower chuck (4), simultaneously coating adhesive (15) on the opposite surfaces of an upper connecting steel bar (12) and a lower connecting steel bar (13), then spreading a pair of handles (5) to open the upper chuck (3) and the lower chuck (4), placing the upper connecting steel bar (12) and the lower connecting steel bar (13) between the upper chuck (3) and the lower chuck (4), closing the pair of handles (5) to enable the upper connecting steel bar (12) and the lower connecting steel bar (13) to be contacted with each other, then shaking a hydraulic handle (10), extending a hydraulic piston (7) to prop against a stop surface (19) at the right end of the lower clamping arm (2), continuing to shake the hydraulic handle (10), continuing to extend the hydraulic piston (7) and driving the right ends of the upper clamping arm (1) and the lower clamping arm (2) to rotate inwards, simultaneously, the left ends of an upper clamping arm (1) and a lower clamping arm (2) are driven to rotate inwards, an upper chuck (3) and a lower chuck (4) extrude an upper connecting steel bar (12) and a lower connecting steel bar (13), so that the transverse sections of the upper connecting steel bar (12) and the lower connecting steel bar (13) are extruded into symmetrical trapezoids, meanwhile, the longitudinal sections of the upper connecting steel bar (12) and the lower connecting steel bar (13) are extruded into convex-concave alternate shapes, an oil drain valve of a hydraulic cylinder (6) is loosened, a hydraulic piston (7) retracts, then a pair of handles (5) are opened to open the upper chuck (3) and the lower chuck (4), concrete is poured after the steel bar connection work is finished, and after the strength of the concrete is reached, due to the holding effect of the concrete and the embedding effect of the concrete filled in a plurality of concave shapes of the upper connecting steel bar (12) and the lower connecting steel bar (13) after connection, the left and right connected steel bars can better resist the tensile stress of the left and right sides.
CN201910611214.5A 2019-07-08 2019-07-08 Hydraulic pliers for connecting reinforcing steel bars Active CN110202689B (en)

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Application Number Priority Date Filing Date Title
CN201910611214.5A CN110202689B (en) 2019-07-08 2019-07-08 Hydraulic pliers for connecting reinforcing steel bars
PCT/CN2020/098568 WO2021004308A1 (en) 2019-07-08 2020-06-28 Hydraulic pliers for connecting reinforcing bars

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CN201910611214.5A CN110202689B (en) 2019-07-08 2019-07-08 Hydraulic pliers for connecting reinforcing steel bars

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CN110202689B true CN110202689B (en) 2020-06-23

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110130502B (en) * 2019-06-03 2020-09-11 湖北思泽新能源科技有限公司 Integral connection system of reinforced concrete assembly type building
CN110202689B (en) * 2019-07-08 2020-06-23 湖北思泽新能源科技有限公司 Hydraulic pliers for connecting reinforcing steel bars

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US4241490A (en) * 1976-05-14 1980-12-30 CCL Systems, Limited Method of applying metal sleeve to concrete reinforcing bar, metal sleeve and swaged connection
EP0059070A1 (en) * 1981-02-24 1982-09-01 Spencer Clark Metal Industries Limited Steel corrosion protected members
AU4123589A (en) * 1989-07-17 1991-05-02 Signode Kabushiki Kaisha Method of gripping and strap for bonding the strap end portions to each other
CN2223153Y (en) * 1994-08-22 1996-03-27 扬子液压机电集团 Reinforced bar cold extrusion connecting machine
CN1239172A (en) * 1998-03-31 1999-12-22 郑京钰 Processing method and connection structure of joint end of reinforced special and steel for concrete
CN1557581A (en) * 2004-01-16 2004-12-29 王昭智 Reinforced bar connection method and manual hydraulic pressure pliers for realizing the method
CN104746804A (en) * 2015-03-26 2015-07-01 青岛森林金属制品有限公司 Lever-type clamp pincer and reinforcing steel bar connection device
CN205577439U (en) * 2016-05-06 2016-09-14 长安大学 Semi -automatic reinforcement pincers
CN106499122A (en) * 2016-11-03 2017-03-15 荆门创佳机械科技有限公司 A kind of spiral pier nose docking facilities

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CN204492011U (en) * 2015-03-26 2015-07-22 青岛森林金属制品有限公司 Lever type clamping pincers and reinforcing steel bar connecting device
CN204626994U (en) * 2015-05-19 2015-09-09 季金锋 Lever Novel steel bar connector clamping device
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CN110202689B (en) * 2019-07-08 2020-06-23 湖北思泽新能源科技有限公司 Hydraulic pliers for connecting reinforcing steel bars
CN110259142B (en) * 2019-07-08 2021-07-13 荆门市佰思机械科技有限公司 Steel bar connection method of integral connection system of assembly type building
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Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4241490A (en) * 1976-05-14 1980-12-30 CCL Systems, Limited Method of applying metal sleeve to concrete reinforcing bar, metal sleeve and swaged connection
EP0059070A1 (en) * 1981-02-24 1982-09-01 Spencer Clark Metal Industries Limited Steel corrosion protected members
AU4123589A (en) * 1989-07-17 1991-05-02 Signode Kabushiki Kaisha Method of gripping and strap for bonding the strap end portions to each other
CN2223153Y (en) * 1994-08-22 1996-03-27 扬子液压机电集团 Reinforced bar cold extrusion connecting machine
CN1239172A (en) * 1998-03-31 1999-12-22 郑京钰 Processing method and connection structure of joint end of reinforced special and steel for concrete
CN1557581A (en) * 2004-01-16 2004-12-29 王昭智 Reinforced bar connection method and manual hydraulic pressure pliers for realizing the method
CN104746804A (en) * 2015-03-26 2015-07-01 青岛森林金属制品有限公司 Lever-type clamp pincer and reinforcing steel bar connection device
CN205577439U (en) * 2016-05-06 2016-09-14 长安大学 Semi -automatic reinforcement pincers
CN106499122A (en) * 2016-11-03 2017-03-15 荆门创佳机械科技有限公司 A kind of spiral pier nose docking facilities

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WO2021004308A1 (en) 2021-01-14
WO2021004308A9 (en) 2021-02-18

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Effective date of registration: 20221024

Address after: No. 12, Rose Street, Pingyin County, Jinan, Shandong 250400

Patentee after: The Yellow River Ji'nan Special Steel Co., Ltd.

Address before: 448000 69 Jingmen Road, Dugao District, Jingmen high tech Zone, Jingmen, Hubei

Patentee before: HUBEI SIZE NEW ENERGY TECHNOLOGY Co.,Ltd.

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