CN109500286B

CN109500286B - Reinforcing bar equipment of buckling that construction used

Info

Publication number: CN109500286B
Application number: CN201811558210.7A
Authority: CN
Inventors: 董立岩
Original assignee: Hubei Guofeng Construction Co ltd
Current assignee: HUBEI GUOFENG CONSTRUCTION Co.,Ltd.
Priority date: 2018-12-19
Filing date: 2018-12-19
Publication date: 2020-05-05
Anticipated expiration: 2038-12-19
Also published as: CN109500286A

Abstract

The invention relates to the technical field of building construction equipment, and discloses a steel bar bending device for building construction, which comprises a base, wherein a hydraulic rotary oil cylinder is fixedly installed on one side of the bottom of an inner cavity of the base, a supporting shaft is fixedly sleeved on the top of the hydraulic rotary oil cylinder, the top end of the supporting shaft extends to the outside of the top end of the base, a bearing is fixedly sleeved on the supporting shaft, and the outer edge of the bearing is fixedly sleeved with the top of the base. This reinforcing bar equipment of buckling of construction usefulness, through put the one end of three reinforcing bars in proper order between locating pressing plate and the three removal clamp plate to fix, pass the other end of three reinforcing bars between back shaft and the qualification pole, rotate around the back shaft through the qualification pole and bend the reinforcing bar, be convenient for bend three reinforcing bars simultaneously, thereby improved the bending speed of reinforcing bar, make the efficiency of construction improve.

Description

Reinforcing bar equipment of buckling that construction used

Technical Field

The invention relates to the technical field of building construction equipment, in particular to reinforcing steel bar bending equipment for building construction.

Background

The steel bar is steel for reinforced concrete and prestressed reinforced concrete, the cross section of the steel bar is circular, sometimes square with round corners, the steel bar comprises smooth round steel bars, ribbed steel bars and twisted steel bars, the steel bar is widely applied to the field of buildings, and in the building engineering, the original steel bar is sometimes required to be bent by steel bar bending equipment and then used.

Aiming at the defects of the prior art, Chinese patent (publication number: CN 104226857B) provides a semi-automatic steel bar bender, which has the advantages of enlarging the bending working surface of the steel bar bender, simple structure, low modification cost and the like, but still has the following technical defects to be solved:

this semi-automatic angle bending machine can only bend a reinforcing bar at every turn, and the reinforcing bar quantity that needs when owing to the construction is more for the speed that the reinforcing bar was bent reduces, thereby has reduced the efficiency of construction, and this semi-automatic angle bending machine is when bending the reinforcing bar, does not fix the reinforcing bar, makes the reinforcing bar buckle the in-process and pops out easily, probably injures constructor.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a reinforcing steel bar bending device for building construction, which has the advantages of being convenient for simultaneously bending a plurality of reinforcing steel bars and fixing the bent reinforcing steel bars, and the like, and solves the problems that the semi-automatic reinforcing steel bar bending machine can only bend one reinforcing steel bar at each time, the bending speed of the reinforcing steel bar is reduced due to the fact that the number of the required reinforcing steel bars is large during building construction, the building construction efficiency is reduced, and the semi-automatic reinforcing steel bar bending machine cannot fix the reinforcing steel bars when bending the reinforcing steel bars, so that the reinforcing steel bars are easy to pop out during bending, and constructors are likely to be injured.

(II) technical scheme

In order to achieve the purpose of simultaneously bending a plurality of reinforcing steel bars and fixing the bent reinforcing steel bars, the invention provides the following technical scheme: a reinforcing steel bar bending device for building construction comprises a base, wherein a hydraulic rotary oil cylinder is fixedly installed on one side of the bottom of an inner cavity of the base, a supporting shaft is fixedly sleeved at the top of the hydraulic rotary oil cylinder, the top of the supporting shaft extends to the outside of the top of the base, a bearing is fixedly sleeved on the supporting shaft, the outer edge of the bearing is fixedly sleeved with the top of the base, two rotating blocks positioned outside the base are fixedly sleeved at the top of the supporting shaft, limiting devices are respectively fixedly sleeved at one side inside the two rotating blocks, a limiting rod is movably sleeved between the two limiting devices, two supporting tubes positioned at one side of the rotating blocks are fixedly connected at the top of the base, a transverse plate is fixedly connected at the top of the two supporting tubes, a pressing device is sleeved at the middle thread of the transverse plate, and sliding devices are respectively fixedly connected at the middle part, two the one end of slider extends to the outside of stay tube respectively and fixedly connected with removes the clamp plate, two the bottom in stay tube inner chamber is fixed respectively to have cup jointed the dead lever, two the bottom fixedly connected with of stay tube is located the location clamp plate of removing the clamp plate below, the top fixedly connected with of base is located the riser of stay tube one side, the middle part of riser is fixed to have cup jointed stop device, the top and the bottom of stop device side are fixedly connected with interlock respectively.

Preferably, the limiting device comprises a limiting pipe, the limiting pipe is fixedly sleeved inside the rotating block, a limiting screw rod is sleeved at one end of the limiting pipe in a threaded manner, one end of the limiting screw rod extends to the outside of the rotating block, a limiting block is fixedly connected to the other end of the limiting screw rod, the inside of the limiting pipe is movably sleeved with one end of the limiting rod, a limiting spring is fixedly connected to the other side of the inner cavity of the limiting pipe, and one end of the limiting spring is fixedly connected with the side face of the limiting rod.

Preferably, the pressing device comprises an adjusting screw, the adjusting screw is sleeved in the middle of the transverse plate in a threaded manner, a pressing block located below the transverse plate is fixedly connected to the bottom end of the pressing device, the bottom of the pressing block is in contact with the top of the movable pressing plate, and an adjusting steering wheel located above the transverse plate is fixedly connected to the top end of the pressing device.

Preferably, slider includes the slide shaft, the both ends of slide shaft respectively with the top and the bottom fixed connection in support tube inner chamber, the slide shaft from top to bottom in proper order the activity cup joint three slide bar, it is three the one end of slide bar extends to the outside of stay tube respectively and with the side fixed connection who removes the clamp plate, it is three equal fixedly connected with reset spring between the slide bar, reset spring activity suit is on the slide shaft.

Preferably, stop device includes stop screw, stop screw's one end and the middle part screw thread of riser cup joint, stop screw's one end fixedly connected with is located the spacing helm of riser one side, stop screw's the other end fixedly cup joints two limiting plates that are located the riser opposite side, stop screw's the other end activity has cup jointed the movable plate that is located between two limiting plates.

Preferably, the linkage device comprises linkage shafts, one ends of the linkage shafts are fixedly connected with the side surfaces of the movable plates, the number of the linkage shafts is four, two of the four linkage shafts are symmetrically distributed at the top and the bottom of the side surfaces of the movable plates, one ends, far away from the movable plates, of the two groups of linkage shafts penetrate through the supporting tubes and are fixedly connected with the linkage plates respectively, the two ends of the side surfaces of the two linkage plates are fixedly connected with the movable pressing shafts, the two sides of the linkage plates are movably sleeved with the positioning shafts, and the two ends of the two positioning shafts are fixedly connected with the side surfaces of the two supporting tubes respectively.

Preferably, two sides of the moving plate are respectively contacted with the side faces of the two limiting plates, and the moving plate is parallel to the moving pressing shaft.

Preferably, the two ends of the limiting rod are fixedly sleeved with baffles positioned outside the rotating blocks, the baffles at the two ends of the limiting rod are respectively contacted with the tops and the bottoms of the two rotating blocks, the tops of the rotating blocks are provided with sliding grooves, and the sliding grooves in the rotating blocks are matched with the limiting rod.

Preferably, the center of the fixed rod and the center of the positioning pressing plate are located on the same straight line, a reset spring is fixedly connected to the top of the fixed rod, the top end of the reset spring is fixedly connected with the bottom of one sliding rod, the shape and the size of the positioning pressing plate are the same as those of the three movable pressing plates, through grooves matched with the movable pressing shafts are formed in two sides of the positioning pressing plate, and the length of the positioning pressing plate is smaller than that of the linkage shaft.

(III) advantageous effects

Compared with the prior art, the invention provides a steel bar bending device for building construction, which has the following beneficial effects:

1. this reinforcing bar equipment of buckling of construction usefulness, through put the one end of three reinforcing bars in proper order between locating pressing plate and the three removal clamp plate to fix, pass the other end of three reinforcing bars between back shaft and the qualification pole, rotate around the back shaft through the qualification pole and bend the reinforcing bar, be convenient for bend three reinforcing bars simultaneously, thereby improved the bending speed of reinforcing bar, make the efficiency of construction improve.

2. This reinforcing bar equipment of buckling of construction usefulness makes three removal clamp plate move down through adjusting screw's rotation to compress tightly three reinforcing bar simultaneously in the vertical direction, and make through stop screw's rotation and remove the last lateral shifting of pressure, the side of cooperation stay tube compresses tightly three reinforcing bars simultaneously from the horizontal direction, makes the fixed effectual of reinforcing bar, prevents that the reinforcing bar from buckling the in-process and popping out, probably injures constructor.

3. This reinforcing bar equipment of buckling of construction usefulness prescribes a limit to the spring through prescribing a limit to the screw rod cooperation and carry on spacingly to prescribing a limit to the pole to distance between control limit to pole and the back shaft is convenient for bend the reinforcing bar of different diameters, and utilizes reset spring's spring action, makes adjusting screw reverse rotation when moving up, and three removal clamp plate is automatic to be shifted up, is convenient for place the reinforcing bar next time, thereby improves the crooked efficiency of reinforcing bar.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of the structural support plate of the present invention;

FIG. 3 is a side cross-sectional view of a structural rotor of the present invention;

FIG. 4 is a top view of the present invention in FIG. 3;

FIG. 5 is a cross-sectional view of the invention in FIG. 4;

FIG. 6 is a schematic top view of a structural alignment platen of the present invention.

In the figure: 1. a base; 2. a hydraulic rotary cylinder; 3. a support shaft; 4. a bearing; 5. rotating the block; 6. a confining means; 61. defining a tube; 62. a confining screw; 63. a limiting block; 64. a restraining spring; 7. a restraining bar; 8. supporting a tube; 9. a transverse plate; 10. a pressing device; 101. adjusting the screw rod; 102. briquetting; 103. adjusting a steering wheel; 11. a sliding device; 111. a sliding shaft; 112. a slide bar; 113. a return spring; 12. moving the pressing plate; 13. fixing the rod; 14. positioning a pressing plate; 15. a vertical plate; 16. a limiting device; 161. a limit screw; 162. limiting and steering; 163. a limiting plate; 164. moving the plate; 17. a linkage device; 171. a linkage shaft; 172. a linkage plate; 173. moving the pressing shaft; 174. and (5) positioning the shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a reinforcing steel bar bending apparatus for building construction includes a base 1, a hydraulic rotary cylinder 2 is fixedly installed at one side of the bottom of an inner cavity of the base 1, a support shaft 3 is fixedly sleeved at the top of the hydraulic rotary cylinder 2, the top end of the support shaft 3 extends to the outside of the top end of the base 1, a bearing 4 is fixedly sleeved on the support shaft 3, the outer edge of the bearing 4 is fixedly sleeved with the top of the base 1, two rotating blocks 5 located outside the base 1 are fixedly sleeved at the top end of the support shaft 3, a limiting device 6 is respectively fixedly sleeved at one side inside of the two rotating blocks 5, the limiting device 6 includes a limiting pipe 61, the limiting pipe 61 is fixedly sleeved inside the rotating blocks 5, a limiting screw 62 is sleeved at one end of the limiting pipe 61, one end of the limiting screw 62 extends to the outside of the rotating blocks 5, a limiting block 63 is fixedly connected, the limiting pipe 61 is movably sleeved with one end of a limiting rod 7, the other side of the inner cavity of the limiting pipe 61 is fixedly connected with a limiting spring 64, one end of the limiting spring 64 is fixedly connected with the side surface of the limiting rod 7, one end of a limiting block 63 is enabled to be matched with the limiting spring 64 to control the position of the limiting rod 7 so as to fix reinforcing steel bars with different sizes, the limiting rod 7 is movably sleeved between two limiting devices 6, baffle plates positioned outside the rotating block 5 are fixedly sleeved at two ends of the limiting rod 7, the baffle plates at two ends of the limiting rod 7 are respectively contacted with the top and the bottom of the two rotating blocks 5, the top of the rotating block 5 is provided with a sliding groove, the sliding groove on the rotating block 5 is matched with the limiting rod 7, and the distance between the limiting rod 7 and the supporting shaft 3 is controlled by moving the limiting rod 7 so as to bend the reinforcing steel bars with different diameters, the baffles at two ends of the limiting rod 7 are utilized to ensure that the limiting rod 7 is always parallel to the supporting shaft 3, thereby ensuring the normal bending of the reinforcing steel bars, the top of the base 1 is fixedly connected with two supporting tubes 8 positioned at one side of the rotating block 5, the top ends of the two supporting tubes 8 are fixedly connected with a transverse plate 9, the middle thread of the transverse plate 9 is sleeved with a pressing device 10, the pressing device 10 comprises an adjusting screw 101, the adjusting screw 101 is sleeved at the middle part of the transverse plate 9, the bottom end of the pressing device 10 is fixedly connected with a pressing block 102 positioned below the transverse plate 9, the bottom of the pressing block 102 is contacted with the top of the movable pressing plate 12, the top end of the pressing device 10 is fixedly connected with an adjusting steering wheel 103 positioned above the transverse plate 9, the pressing block 102 is driven to move downwards by rotating the adjusting screw 101, so that the three movable pressing plates, thereby improving the bending efficiency of the reinforcing steel bar, the middle parts of the bottom ends of the inner cavities of the two support tubes 8 are respectively fixedly connected with a sliding device 11, the sliding device 11 comprises a sliding shaft 111, two ends of the sliding shaft 111 are respectively fixedly connected with the top and the bottom of the inner cavity of the support tube 8, the sliding shaft 111 is sequentially and movably sleeved with three sliding rods 112 from top to bottom, one ends of the three sliding rods 112 respectively extend to the outside of the support tube 8 and are fixedly connected with the side surface of the movable pressing plate 12, a reset spring 113 is fixedly connected among the three sliding rods 112, the reset spring 113 is movably sleeved on the sliding shaft 111, when the adjusting screw 101 reversely rotates and moves upwards, the three movable pressing plates 12 move upwards by the elastic force of the reset spring 113, thereby facilitating the taking out of the bent reinforcing steel bar and the placing of the reinforcing steel bar which needs to be bent next time, improving the bending efficiency of the reinforcing steel bar, one ends of, the bottoms of the inner cavities of the two support pipes 8 are respectively fixedly sleeved with a fixed rod 13, the center of the fixed rod 13 and the center of a positioning pressure plate 14 are positioned on the same straight line, the top of the fixed rod 13 is fixedly connected with a return spring 113, the top end of the return spring 113 is fixedly connected with the bottom of a sliding rod 112, the shape and the size of the positioning pressure plate 14 are the same as those of the three movable pressure plates 12, both sides of the positioning pressure plate 14 are respectively provided with a through groove matched with a movable pressure shaft 173, the length of the positioning pressure plate 14 is smaller than that of a linkage shaft 171, so that three steel bars can be simultaneously pressed through the matching of the three movable pressure plates 12 and the positioning pressure plate 14, the bending efficiency of the steel bars is improved, the bottoms of the two support pipes 8 are fixedly connected with the positioning pressure plate 14 positioned below the movable pressure plate 12, the top of the base 1, the limiting device 16 comprises a limiting screw 161, one end of the limiting screw 161 is in threaded sleeve joint with the middle of the vertical plate 15, one end of the limiting screw 161 is fixedly connected with a limiting rotary rudder 162 positioned on one side of the vertical plate 15, the other end of the limiting screw 161 is fixedly sleeved with two limiting plates 163 positioned on the other side of the vertical plate 15, the other end of the limiting screw 161 is movably sleeved with a moving plate 164 positioned between the two limiting plates 163, two sides of the moving plate 164 are respectively contacted with the side surfaces of the two limiting plates 163, and the moving plate 164 is parallel to the moving pressure shaft 173, so that when the moving plate 164 moves, the side surface of the moving pressure shaft 173 can be in close contact with the three steel bars, thereby being matched with the side surface of the support tube 8 to simultaneously compress the three steel bars, being convenient for bending the three steel bars simultaneously, by the rotation of the limiting screw 161, the moving plate, the reinforcing steel bar fixing effect is good, the top and the bottom of the side of the limiting device 16 are respectively and fixedly connected with the linkage devices 17, the linkage devices 17 comprise linkage shafts 171, one ends of the linkage shafts 171 are fixedly connected with the side of the moving plate 164, the number of the linkage shafts 171 is four, the four linkage shafts 171 are symmetrically distributed on the top and the bottom of the side of the moving plate 164 in a group of two, one ends of the two groups of linkage shafts 171 far away from the moving plate 164 penetrate through the support tube 8 and are fixedly connected with the linkage plates 172, the two ends of the side of the two linkage plates 172 are respectively and fixedly connected with the moving pressure shaft 173, the two sides of the linkage plates 172 are respectively and movably sleeved with the positioning shafts 174, the two ends of the two positioning shafts 174 are respectively and fixedly connected with the sides of the two support tubes 8, the moving plate 164 moves in the horizontal direction through the rotation of the limiting screw 161, the moving pressure shaft 173 is driven to horizontally move, so as, so that the effect of fixing the steel bars is good.

During operation, at first, put the one end of three reinforcing bars in proper order between locating pressing plate 14 and three removal clamp plate 12, and put the other end of three reinforcing bars between back shaft 3 and the qualification pole 7, then, rotate and prescribe a limit to screw 62 and make the qualification pole 7 remove to contact with the reinforcing bar, then, rotate adjusting screw 101 and make briquetting 102 drive removal clamp plate 12 move down, make three removal clamp plate 12 compress tightly three reinforcing bars respectively, and rotate limiting screw 161 and make riser 15 drive interlock axle 171 remove, make interlock board 172 drive removal pressure axle 173 remove and cooperate the side of stay tube 8 to compress tightly the reinforcing bar, finally, start hydraulic pressure rotary cylinder 2 and make back shaft 3 drive turning block 5 rotate, utilize the 3 bending reinforcing bars of the cooperation back shaft of qualification pole 7, can.

To sum up, the reinforcing steel bar bending device for building construction is characterized in that one ends of three reinforcing steel bars are sequentially placed between the positioning pressing plate 14 and the three movable pressing plates 12 and fixed, the other ends of the three reinforcing steel bars penetrate between the supporting shaft 3 and the limiting rod 7, and the limiting rod 7 rotates around the supporting shaft 3 to bend the reinforcing steel bars, so that the three reinforcing steel bars can be conveniently bent at the same time, the bending speed of the reinforcing steel bars is increased, and the building construction efficiency is improved; the three movable pressing plates 12 move downwards through the rotation of the adjusting screw 101, so that three steel bars are pressed simultaneously in the vertical direction, the movable pressing shaft 173 moves transversely through the rotation of the limiting screw 161, and the three steel bars are pressed simultaneously from the horizontal direction by matching with the side surface of the supporting tube 8, so that the fixing effect of the steel bars is good, the steel bars are prevented from being popped out in the bending process, and constructors are prevented from being injured; the limiting screw 62 is matched with the limiting spring 64 to limit the limiting rod 7, so that the distance between the limiting rod 7 and the supporting shaft 3 is controlled, reinforcing steel bars with different diameters can be conveniently bent, and the three movable pressing plates 12 automatically move upwards to facilitate the next reinforcing steel bar placement when the adjusting screw 101 rotates reversely and moves upwards by utilizing the elastic force of the return spring 113, so that the bending efficiency of the reinforcing steel bars is improved; the problem of this semi-automatic angle bending machine can only bend a reinforcing bar at every turn, because the reinforcing bar quantity that needs during construction is more for the speed that the reinforcing bar was bent reduces, thereby has reduced the efficiency of construction, and this semi-automatic angle bending machine is when bending the reinforcing bar, does not fix the reinforcing bar, makes the reinforcing bar buckle the in-process and pops out easily, probably injures constructor is solved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a reinforcing bar equipment of buckling that construction used, includes base (1), its characterized in that: the hydraulic rotary oil cylinder (2) is fixedly arranged on one side of the bottom of the inner cavity of the base (1), a support shaft (3) is fixedly sleeved on the top of the hydraulic rotary oil cylinder (2), the top end of the support shaft (3) extends to the outside of the top end of the base (1), a bearing (4) is fixedly sleeved on the support shaft (3), the outer edge of the bearing (4) is fixedly sleeved on the top of the base (1), two rotating blocks (5) positioned on the outside of the base (1) are fixedly sleeved on the top end of the support shaft (3), two limiting devices (6) are respectively fixedly sleeved on one side inside the rotating blocks (5), a limiting rod (7) is movably sleeved between the two limiting devices (6), two support pipes (8) positioned on one side of the rotating blocks (5) are fixedly connected to the top of the base (1), and transverse plates (9) are fixedly connected to the top ends of the support pipes (, a pressing device (10) is sleeved at the middle of the transverse plate (9) in a threaded manner, sliding devices (11) are fixedly connected to the middle of the bottom ends of the inner cavities of the two supporting tubes (8) respectively, one ends of the two sliding devices (11) extend to the outer portions of the supporting tubes (8) respectively and are fixedly connected with movable pressing plates (12), fixing rods (13) are fixedly sleeved at the bottoms of the inner cavities of the two supporting tubes (8) respectively, positioning pressing plates (14) located below the movable pressing plates (12) are fixedly connected to the bottoms of the two supporting tubes (8), a vertical plate (15) located on one side of each supporting tube (8) is fixedly connected to the top of the base (1), a limiting device (16) is fixedly sleeved at the middle of each vertical plate (15), and linkage devices (17) are fixedly connected to the top and the bottom; the limiting device (6) comprises a limiting pipe (61), the limiting pipe (61) is fixedly sleeved in the rotating block (5), a limiting screw rod (62) is sleeved at one end of the limiting pipe (61), one end of the limiting screw rod (62) extends to the outside of the rotating block (5), a limiting block (63) is fixedly connected to the other end of the limiting screw rod (62), the inside of the limiting pipe (61) is movably sleeved with one end of a limiting rod (7), a limiting spring (64) is fixedly connected to the other side of the inner cavity of the limiting pipe (61), and one end of the limiting spring (64) is fixedly connected with the side face of the limiting rod (7).

2. A reinforcing bar bending apparatus for construction according to claim 1, wherein: closing device (10) include adjusting screw (101), adjusting screw (101) screw thread cup joints at the middle part of diaphragm (9), the bottom fixedly connected with of closing device (10) is located briquetting (102) of diaphragm (9) below, the bottom of briquetting (102) and the top contact of moving clamp plate (12), the top fixedly connected with of closing device (10) is located regulation helm steering (103) of diaphragm (9) top.

3. A reinforcing bar bending apparatus for construction according to claim 1, wherein: slider (11) are including sliding shaft (111), the both ends of sliding shaft (111) respectively with the top and the bottom fixed connection of stay tube (8) inner chamber, sliding shaft (111) from top to bottom in proper order the activity cup jointed three slide bar (112), three the one end of slide bar (112) extends to the outside of stay tube (8) respectively and with the side fixed connection who removes clamp plate (12), three equal fixedly connected with reset spring (113) between slide bar (112), reset spring (113) activity suit is on sliding shaft (111).

4. A reinforcing bar bending apparatus for construction according to claim 3, wherein: stop device (16) include stop screw (161), the one end of stop screw (161) and the middle part screw thread of riser (15) cup joint, the one end fixedly connected with of stop screw (161) is located spacing helm (162) of riser (15) one side, the fixed cover of the other end of stop screw (161) has connect two limiting plate (163) that are located riser (15) opposite side, movable plate (164) that are located between two limiting plate (163) have been cup jointed in the other end activity of stop screw (161).

5. A reinforcing bar bending apparatus for building construction according to claim 4, wherein: the linkage device (17) comprises linkage shafts (171), one ends of the linkage shafts (171) are fixedly connected with the side faces of the moving plate (164), the number of the linkage shafts (171) is four, two of the four linkage shafts (171) are symmetrically distributed at the top and the bottom of the side face of the moving plate (164) in a group, one ends, far away from the moving plate (164), of the two groups of linkage shafts (171 respectively penetrate through the support tubes (8) and are fixedly connected with the linkage plates (172), two ends of the side face of each of the two linkage plates (172) are fixedly connected with the moving pressing shafts (173), positioning shafts (174) are movably sleeved on two sides of each of the linkage plates (172), and two ends of each of the two positioning shafts (174) are fixedly connected with the side faces of the two support tubes (8) respectively.

6. A reinforcing bar bending apparatus for building construction according to claim 4, wherein: two sides of the moving plate (164) are respectively contacted with the side faces of the two limit plates (163), and the moving plate (164) is parallel to the moving pressing shaft (173).

7. A reinforcing bar bending apparatus for construction according to claim 1, wherein: the baffle that is located turning block (5) outside is all fixed cup jointed at the both ends of restriction pole (7), and the baffle at restriction pole (7) both ends contacts with the top and the bottom of two turning block (5) respectively, the spout has been seted up at the top of turning block (5), and spout and restriction pole (7) looks adaptation on turning block (5).

8. A reinforcing bar bending apparatus for building construction according to claim 5, wherein: the center of the fixed rod (13) and the center of the positioning pressing plate (14) are located on the same straight line, a reset spring (113) is fixedly connected to the top of the fixed rod (13), the top end of the reset spring (113) is fixedly connected with the bottom of one sliding rod (112), the shape and the size of the positioning pressing plate (14) are the same as those of three movable pressing plates (12), through grooves matched with the movable pressing shafts (173) are formed in the two sides of the positioning pressing plate (14), and the length of the positioning pressing plate (14) is smaller than that of the linkage shaft (171).