Large-diameter steel bar bending device and operation method thereof

Abstract

The invention discloses a large-diameter steel bar bending device and an operation method thereof.The large-diameter steel bar bending device comprises a feeding mechanism, a steel bar bending machine and an auxiliary supporting walking platform, the feeding end of the steel bar bending machine is in butt joint with the feeding mechanism, and the feeding mechanism is used for unbinding bundled steel bars and dispersedly conveying the steel bars one by one; the auxiliary supporting walking platform is installed on the other side of the steel bar bending machine and used for conducting auxiliary supporting on the extending section of the steel bar and walking along with bending. The supporting structure capable of walking is installed on one side of the steel bar bending machine, auxiliary supporting is conducted on a steel bar with a cantilever stretching out too long, the steel bar bending machine can walk along with bending in the bending process, the situation that the bending quality of the bent position becomes poor due to the fact that the cantilever is too large and the weight of the steel bar is large is avoided, manual assistance is not needed, labor intensity is reduced, time and labor are saved, and only one person is needed for operation; and the supporting block is rotationally connected with the connecting base, so that the supporting block can rotate along with the connecting base in the steel bar bending process.

Description

Technical Field

[0001] The invention belongs to the technical field of annular steel bar bending and welding equipment, and relates to a large-diameter steel bar bending device and an operating method thereof. Background Art

[0002] A large amount of steel bars are needed for railway and highway construction. Most of the steel bars need to be bent before use. For ordinary bending, manual feeding is used directly. However, when bending steel bars with a diameter of more than 20 mm, manual feeding is time-consuming and labor-intensive, and the labor intensity is high. Moreover, when bending, one end of the cantilever is extended to suspend the bend, which will affect the bending quality. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a large-diameter steel bar bending device and an operating method thereof, which can save time and effort in feeding large-diameter steel bars for bending, and will not affect the bending quality of the steel bars during the bending process.

[0004] The technical solution adopted by the present invention is: a large-diameter steel bar bending device, including a feeding mechanism, a steel bar bending machine and an auxiliary support walking platform. The feeding end of the steel bar bending machine is connected to the feeding mechanism. The feeding mechanism is used to unbundle the bundled steel bars and transport them individually. The auxiliary support walking platform is installed on the other side of the steel bar bending machine, and is used to provide auxiliary support for the extended section of the steel bar and follow the bending.

[0005] Furthermore, the auxiliary support walking platform includes a support block, a connecting seat and a walking frame. A strip groove for placing steel bars is provided on the top of the support block. The bottom of the support block is rotatably connected to the connecting seat. The connecting seat is fixedly connected to the walking frame. The bottom of the walking frame is connected to an arc guide rail through a slider. The arc guide rail is fixedly connected to the ground. The center of the arc guide rail is concentric with the axle of the fixed wheel of the steel bar bending machine and is located on the steel bar bending side.

[0006] Furthermore, an elastic bayonet is provided in the above-mentioned strip groove. Two groups of elastic bayonet are used, which are symmetrically arranged on both sides of the strip groove, and the outer ends are provided with upper and lower symmetrical slope surfaces. After the elastic bayonet is extended, the slope surface can abut against the sleeve, and the sleeve is movably connected to the steel bar. The sleeve is provided with different specifications.

[0007] Furthermore, the elastic bayonet includes a clamping head, a telescopic rod, a telescopic spring and a limiting ring. The clamping head is a square head. The length of the square head portion of the clamping head is greater than half the width of the strip groove. The slope surfaces are symmetrically arranged up and down close to one side of the sleeve. The clamping head is movably embedded in a blind square hole horizontally arranged on the side of the strip groove, and the inner end is fixedly connected to the telescopic rod. After the telescopic rod passes through the circular hole at the bottom of the blind square hole, it is connected to the limiting ring through a thread.

[0008] Furthermore, the walking frame includes a column and a base plate. The column is a hollow tube, and the lower end is fixedly connected to the center of the base plate. The column is provided with a plurality of reinforcing ribs, and the reinforcing ribs are provided with weight-reducing holes.

[0009] Furthermore, the above-mentioned feeding mechanism includes an unbinding mechanism, a single-root splitting mechanism and a single-root conveying mechanism. The unbinding mechanism is installed on the top of the support frame. A slope hopper is provided on the top of the support frame. The single-root splitting mechanism is installed at the transverse strip discharge port of the slope hopper. The single-root conveying mechanism is installed at the bottom of the slope surface of the support frame, and is used to feed the steel bars delivered by the single-root splitting mechanism into the feed port of the steel bar bending machine.

[0010] Furthermore, the above-mentioned unbinding mechanism includes a horizontal linear walking module, a walking frame, a lifting cylinder, a pneumatic finger and a rotary cylinder. The horizontal linear walking module is fixedly connected to the top of the support frame. The support frame is an inverted L-shaped structure. The lower end is fixedly connected to the slider of the horizontal linear walking module. The horizontal free end of the support frame is fixedly connected to the lifting cylinder. The lifting cylinder adopts a double-rod cylinder. The lower end connecting plate is fixedly connected to the rotary cylinder. The rotary table of the rotary cylinder is fixedly connected to the pneumatic finger. The clamping end of the pneumatic finger can clamp the spiral knot of the bundled steel wire. A camera is arranged at the horizontal free end of the support frame.

[0011] Furthermore, the above-mentioned single-bar splitting mechanism includes double rollers, which are fixedly connected to the driving shaft on the left and right sides respectively, and the two ends of the driving shaft are rotatably connected to the bearing seat, the bearing seat is fixedly connected to the support frame and one end is extended out and connected to the power drive mechanism, and a notch is set at the corresponding position on the double roller, and the notch can accommodate a steel bar. When the notch is located on the lower side, the taken out steel bar can fall automatically.

[0012] Furthermore, the above-mentioned single conveying mechanism includes multiple walking sliding wheels, which are rotatably connected to the bottom of the inclined surface of the support frame. One side of the walking sliding wheel extends out of the rotating position and is connected to a double-groove pulley. Two adjacent double-groove pulleys are connected by belts, and the double-groove pulley is connected to the active pulley of the feeding drive motor through a belt.

[0013] An operating method of a large-diameter steel bar bending device is as follows: the feeding mechanism unties the bundled steel bars and delivers a single steel bar to the feed port of the steel bar bending machine, and moves forward to a set position under the action of the guide wheel group and the feeding roller of the steel bar bending machine, and the end portion moving forward is supported on the auxiliary support walking platform, the steel bar bending machine performs a bending operation, and the auxiliary support walking platform follows the walking auxiliary support. After the bending is completed, the bent steel bars are disassembled, and the auxiliary support walking platform moves to the starting position to continue bending the next steel bar.

[0014] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention uses a feeding mechanism to feed materials, which saves time and effort, and greatly reduces labor intensity. By installing a walkable support structure on one side of the steel bar bending machine, auxiliary support is provided for the steel bars that extend the cantilever too long, and the structure can follow the bending during the bending process to avoid the poor bending quality at the bending point due to the heavy weight of the steel bars caused by the cantilever being too large. No manual assistance is required, labor intensity is reduced, time and effort are saved, and only one person is required to operate, with higher operational safety. The support block is rotatably connected to the connecting seat and can follow the rotation during the steel bar bending process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a ring-shaped steel bar bending and welding platform; Figure 2 It is a schematic diagram of the feeding mechanism from a top view; Figure 3 It is a side view structural diagram of the feeding mechanism; Figure 4 A schematic diagram of the installation structure for the auxiliary support walking platform; Figure 5 It is a front view structural diagram of the auxiliary support walking platform; Figure 6 This is a schematic diagram of the installation structure of the support block from the left; Figure 7 for Figure 6 Schematic diagram of the enlarged structure of part A in the middle. DETAILED DESCRIPTION

[0016] The invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] Example 1: Figure 1 to Figure 7 As shown, a large-diameter steel bar bending device includes a feeding mechanism 1, a steel bar bending machine 2 and an auxiliary support walking platform 3. The feeding end of the steel bar bending machine 2 is connected to the feeding mechanism 1. The feeding mechanism 1 is used to unbundle the bundled steel bars 4 and transport them individually. The auxiliary support walking platform 3 is installed on the other side of the steel bar bending machine 2, and is used to extend the steel bar 4 for auxiliary support and follow the bending.

[0018] Furthermore, the auxiliary support walking platform 3 includes a support block 301, a connecting seat 302 and a walking frame 303. The top of the support block 301 is provided with a strip groove 304 for placing the steel bars 4. The bottom of the support block 301 is rotatably connected to the connecting seat 302. The connecting seat 302 is fixedly connected to the walking frame 303. The bottom of the walking frame 303 is connected to the arc guide rail 308 through a slider 307. Safety elastic blocks 305 are provided at both ends of the arc guide rail 308. The arc guide rail 308 is fixedly connected to the ground through a mounting plate 309. The center of the circle of the shaped guide rail 308 is concentric with the axle of the fixed wheel 6 of the steel bar bending machine 2 and is located on the bending side of the steel bar 4; by installing a walkable support structure on one side of the steel bar bending machine, auxiliary support is provided for the steel bars that extend out too long from the cantilever, and the structure can follow the bending during the bending process to avoid the cantilever being too large and causing the bending quality at the bending point to deteriorate due to the heavy weight of the steel bars. No manual assistance is required, labor intensity is reduced, time and effort are saved, only one person is needed to operate, and the operation is safer. The support block is rotatably connected to the connecting seat and can follow the rotation during the steel bar bending process.

[0019] The rebar bending machine delivers the rebar from multiple sets of guide wheels 5 to the specified position, and then drives the bending drive wheel 7 to rotate around the center of the fixed wheel 6 to bend the rebar. The cantilever end of the rebar 4 is placed on the strip groove 304. The strip groove 304 rotates around the connecting seat 302 during the swinging process. The rebar 4 retracts and contracts in the strip groove 304 at night, realizing the auxiliary support walking of the cantilever end of the rebar 4. A V-shaped guide part 8 is also arranged in front of the multiple sets of guide wheels 5, which is beneficial for the feeding mechanism 1 to deliver the rebar 4 into the bending mechanism.

[0020] In order to improve the stability of following walking during the bending process, an elastic pin 310 is provided in the strip groove 304. Two groups of elastic pins 310 are used, which are symmetrically arranged on both sides of the strip groove 304, and the outer ends are provided with upper and lower symmetrical slope surfaces 311. After the elastic pin 310 is extended, the slope surface 311 can be abutted against the sleeve 312. The sleeve 312 is movably sleeved on the steel bar 4. The sleeve is in contact with the steel bar, which can achieve support and extension at the same time. The four elastic pins can achieve stable support of the sleeve. In order to adapt to different steel bar diameters and steel bar cantilever lengths, the sleeve 312 is set with different specifications. Sleeve specifications with different pipe diameters and different lengths are set, which can adapt to cantilever supports with different steel bar diameters and steel bar cantilever lengths.

[0021] In order to ensure the stability of elastic clamping, the elastic bayonet 310 includes a clamping head 31001, a telescopic rod 31002, a telescopic spring 31003 and a limiting ring 31004. The clamping head 31001 is a square head. The length of the square head part of the clamping head 31001 is greater than half the width of the strip groove 304. The slope surface 311 is symmetrically arranged up and down on the side close to the sleeve 312. The clamping head 31001 is movably embedded in the blind square hole 31005 horizontally arranged on the side of the strip groove 304, and the inner end is fixedly connected to the telescopic rod 31002. After the telescopic rod 31002 passes through the circular hole at the bottom of the blind square hole 31005, it is threadedly connected to the limiting ring 31004. The elastic bayonet is pressed against the sleeve to limit the sleeve and realize friction axial limitation. The strip groove 304 and the slope surface 311 are both provided with a rubber layer, which can improve the friction force and improve the limiting stability.

[0022] In order to support stable walking, the walking frame 303 includes a column 3301 and a base plate 3302. The top of the column 3301 is fixedly connected to the bottom of the connecting seat. The column 3301 adopts a hollow tube, and the lower end is fixedly connected to the center of the base plate 3301. The column 3301 is provided with a plurality of reinforcing ribs 3303, and the reinforcing ribs 3303 are provided with weight-reducing holes 3304. The walking frame with this structure is light in weight, has good rigidity and strength, and is stable and reliable in walking.

[0023] In order to reduce labor intensity, the feeding mechanism 1 includes an unbinding mechanism 101, a single-bar splitting mechanism 102 and a single-bar conveying mechanism 103. The unbinding mechanism 101 is installed on the top of the support frame 104. A slope hopper 105 is arranged on the top of the support frame 104. The single-bar splitting mechanism 102 is installed at the transverse strip discharge port 106 of the slope hopper 105. The single-bar conveying mechanism 103 is installed at the bottom of the slope surface of the support frame 104, and is used to feed the steel bars 4 delivered by the single-bar splitting mechanism 102 into the feed port of the steel bar bending machine 2. The transverse strip discharge port 106 and the single-bar conveying mechanism 103 are transitionally connected by a sliding slope surface 121, and the sliding slope surface 121 is fixed. The walking sliding wheel 117 is connected to the support frame 104, and the lower end is slightly higher than the single-bar conveying mechanism 103. The unbinding mechanism is used to unbind the multiple steel bars bundled for lifting and loosely place them in the slope hopper. The single-bar splitting mechanism is used to split the steel bars in the slope hopper into single bars and feed them into the single-bar conveying mechanism. The feeding mechanism greatly reduces the labor intensity (for bending steel bars with a diameter of more than 20 mm and a length of more than 4 m, the conventional operation requires manual unscrewing of the bundled steel bars, and then two people are used to lift the unloaded materials at both ends to the feeding rollers, and push them into the steel bar bending machine for bending), which saves time and labor, does not require manual unbinding and unloading, and has higher operation safety.

[0024] In order to reduce the spirally tightened steel wire of the untied bundled steel bars, the untying mechanism 101 includes a horizontal linear walking module 107, a walking frame 108, a lifting cylinder 109, a pneumatic finger 110 and a rotary cylinder 111. The horizontal linear walking module 107 is fixedly connected to the top edge of the support frame 104. The support frame 104 is an inverted L-shaped structure, and the lower end is fixedly connected to the slider of the horizontal linear walking module 107 through a flange. The horizontal free end of the support frame 104 is fixedly connected to the lifting cylinder 109 through a flange plate 124. The lifting cylinder 109 adopts a double-rod cylinder, the lower end connecting plate is fixedly connected to the rotary cylinder 111, the rotary table of the rotary cylinder 111 is fixedly connected to the pneumatic finger 110 through the inverted L-shaped finger bracket 123, the clamping end of the pneumatic finger 110 can clamp the spiral knot of the bundled steel wire, the top of the knotted steel wire is clamped by the pneumatic finger, and the rotary cylinder is driven to rotate to loosen the spirally bound steel wire. After loosening, the pneumatic finger is used again to clamp the loosened steel wire and lift up one end, and then the steel wire is dragged out, realizing the unbinding function. The unbinding is fast and stable, and the support frame 104 is horizontal. The free end is provided with a camera 112, through which the knotted part of the steel wire bundle can be quickly and accurately identified. If it is not in the appropriate position, it is manually moved slightly to facilitate the pneumatic fingers to stably clamp and rotate to loosen the spirally knotted steel wire; in order to avoid lifting the bundled steel bars into the slope hopper, the walking frame 108 is connected to the slider of the horizontal linear walking module 107 through the electric turntable 122. The walking frame is rotated by the electric turntable, and then the structure at the pneumatic finger is rotated to the rear side to make room above the slope hopper, which is convenient for lifting and unloading the bundled steel bars. Higher safety, the clamping surface of the clamping end of the pneumatic finger 110 is provided with anti-slip grooves, which can improve the clamping stability and reliability. In order to facilitate more precise clamping, an upper horizontal linear module that moves back and forth is installed on one side of the horizontal beam of the walking frame 108, and the lifting cylinder 109 is connected to the slider of the upper horizontal linear module through the flange plate 124, so that the pneumatic finger can move back and forth, which is more conducive to the lateral and longitudinal movement of the pneumatic finger and the rapid vertical positioning, thereby improving the positioning accuracy. For the unbinding of at least 2 bundled steel wires, the unbinding efficiency is greatly improved.

[0025] In order to facilitate the splitting and arranging into the single-bar conveying mechanism, the single-bar splitting mechanism 102 includes a double roller 113, and the double roller 113 is located at the horizontal strip discharge port 106. The double rollers 113 are fixedly connected to the driving shaft 114 on the left and right sides respectively. The two ends of the driving shaft 114 are rotatably connected to the bearing seat 115. The bearing seat 115 is fixedly connected to the support frame 104 and one end is extended and connected to the power drive mechanism. A U-shaped notch 116 is provided at the corresponding position of the double roller 113. The notch 116 can accommodate a steel bar 4. When the notch 116 is located on the lower side, the taken-out steel bar 4 can be automatically dropped. The single steel bar in the slope hopper falls into the notch. Under the clockwise driving action of the driving shaft, the steel bar first reaches the discharge port. Due to the action of the steel bar's own weight, it can automatically fall out of the discharge port and enter the slide. On the dynamic slope surface, the structure is simple to split and arrange, and can be rotated as needed to obtain a single steel bar output, automatic loading, and simple loading. For large-diameter and long-length steel bars (diameter above 20mm, length above 4m), it avoids the time-consuming and labor-intensive manual lifting and loading by two people, and has higher safety. The roller surface of the double roller 113 is provided with a plurality of convex points with spot welding, and the plurality of convex points are staggered, which can improve the friction of rolling, facilitate the straightening of the steel bars into the gap, and improve the accuracy of the insertion into the gap. The power drive mechanism adopts a variable speed motor 125, and the variable speed motor 125 is fixedly connected to the support frame 104. The front side wall of the slope hopper 105 facing the double roller 113 is provided with an arc cavity 126, and the arc cavity 126 is coaxial with the double roller 113, which can provide a rotating cavity for the rotation of the double roller 113 and is conducive to the rotation of the double roller.

[0026] It can realize single-steel directional conveying to the feed port of the bending device. The single-steel conveying mechanism 103 includes multiple walking sliding wheels 117. The wheel groove of the walking sliding wheel 117 is V-shaped and can accommodate a single steel bar. The walking sliding wheel 117 is rotatably connected to the bottom of the inclined surface of the support frame 104. One side of the walking sliding wheel 117 extends out of the rotating position and is connected to a double-groove pulley 118. Two adjacent double-groove pulleys 118 are connected by a belt 119. The double-groove pulley 118 is connected to the active pulley of the feeding drive motor 120 through a belt. The feeding drive motor 120 is installed on the support frame 104 and is driven by the feeding drive motor, thereby driving all the groove wheels to rotate and feed, and the feeding is stable and reliable.

[0027] Embodiment 2: An operating method of a large-diameter steel bar bending device is as follows: the feeding mechanism unties the bundled steel bars and delivers a single steel bar to the feed port of the steel bar bending machine, and moves forward to the set position under the action of the guide wheel group and the feeding roller of the steel bar bending machine, and the end portion moving forward is supported on the auxiliary support walking platform, the steel bar bending machine performs the bending operation, and the auxiliary support walking platform follows the walking auxiliary support. After the bending is completed, the bent steel bars are removed, and the auxiliary support walking platform moves to the starting position to continue bending the next steel bar.

[0028] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A large diameter steel bar bending device, characterized in that: The invention comprises a feeding mechanism (1), a steel bar bending machine (2) and an auxiliary support walking platform (3); the feeding end of the steel bar bending machine (2) is connected to the feeding mechanism (1); the feeding mechanism (1) is used to unbundle bundled steel bars (4) and disperse and transport them individually; the auxiliary support walking platform (3) is installed on the other side of the steel bar bending machine (2) and is used to provide auxiliary support for the extended section of the steel bar (4) and to follow the bending movement.

2. A large diameter steel bar bending device according to claim 1, characterized in that: The invention comprises a support block (301), a connecting seat (302) and a traveling frame (303); the top of the support block (301) is provided with a strip groove (304) for placing a steel bar (4); the bottom of the support block (301) is rotatably connected to the connecting seat (302); the connecting seat (302) is fixedly connected to the traveling frame (303); the bottom of the traveling frame (303) is connected to an arc guide rail (308) via a slider (307); the arc guide rail (308) is fixedly connected to the ground; the center of the arc guide rail (308) is concentric with the wheel axle of the fixed wheel (6) of the steel bar bending machine and is located on the bending side of the steel bar (305).

3. A large diameter steel bar bending device according to claim 2, characterized in that: An elastic latch (310) is arranged in the strip groove (304). Two groups of the elastic latch (310) are symmetrically arranged on both sides of the strip groove (304). The outer ends are provided with vertically symmetrical slope surfaces (311). After the elastic latch (310) is extended, the slope surface (311) can abut against the sleeve (312). The sleeve (312) is movably sleeved on the steel bar (305). The sleeve (312) is provided with different specifications.

4. A large diameter steel bar bending device according to claim 3, characterized in that: The elastic bayonet (310) comprises a clamping head (31001), a telescopic rod (31002), a telescopic spring (31003) and a limiting ring (31004). The clamping head (31001) is a square head. The length of the square head portion of the clamping head (31001) is greater than half the width of the strip groove (304). The inclined surfaces (311) are symmetrically arranged up and down on one side close to the sleeve (312). The clamping head (31001) is movably embedded in a blind square hole (31005) horizontally arranged on the side of the strip groove (304), and the inner end is fixedly connected to the telescopic rod (31002). The telescopic rod (31002) passes through the circular hole at the bottom of the blind square hole (31005) and is connected to the limiting ring (31004) through a thread.

5. The large diameter steel bar bending device according to claim 2, characterized in that: The walking frame (303) comprises a column (3301) and a bottom plate (3302). The column (3301) is a hollow tube, the lower end of which is fixedly connected to the center of the bottom plate (3301). The column (3301) is provided with a plurality of reinforcing ribs (3303), and the reinforcing ribs (3303) are provided with weight-reducing holes (3304).

6. A large diameter steel bar bending device according to claim 2, characterized in that: The feeding mechanism (1) comprises an unbinding mechanism (101), a single-bar splitting mechanism (102) and a single-bar conveying mechanism (103); the unbinding mechanism (101) is mounted on the top of a support frame (104); a slope hopper (105) is arranged on the top of the support frame (104); the single-bar splitting mechanism (102) is mounted at a transverse strip-shaped discharge port (106) of the slope hopper (105); and the single-bar conveying mechanism (103) is mounted at the bottom of the slope surface of the support frame (104) and is used to feed the steel bars (4) delivered by the single-bar splitting mechanism (102) into the feed port of the steel bar bending machine (2).

7. A large diameter steel bar bending device according to claim 6, characterized in that: The unbinding mechanism (101) comprises a horizontal linear walking module (107), a walking frame (108), a lifting cylinder (109), a pneumatic finger (110) and a rotary cylinder (111). The horizontal linear walking module (107) is fixedly connected to the top of a support frame (104). The support frame (104) is an inverted L-shaped structure, and the lower end is fixedly connected to a slider of the horizontal linear walking module (107). The horizontal free end of the support frame (104) is fixedly connected to the lifting cylinder (109). The lifting cylinder (109) adopts a double-rod cylinder, and the lower end connecting plate is fixedly connected to the rotary cylinder (111). The rotary table of the rotary cylinder (111) is fixedly connected to the pneumatic finger (110). The clamping end of the pneumatic finger (110) can clamp the spiral knot of the bundled steel wire. The horizontal free end of the support frame (104) is provided with a camera (112).

8. A large diameter steel bar bending device according to claim 4, characterized in that: The single-bar splitting mechanism (102) comprises a pair of rollers (113), the left and right sides of the pair of rollers (113) are respectively fixedly connected to a driving shaft (114), the two ends of the driving shaft (114) are rotatably connected to a bearing seat (115), the bearing seat (115) is fixedly connected to a support frame (104) and one end is extended out to be connected to a power drive mechanism, a notch (116) is provided at a corresponding position on the pair of rollers (113), the notch (116) can accommodate a steel bar (4), and when the notch (116) is located at the lower side, the removed steel bar (4) can automatically fall out.

9. A large diameter steel bar bending device according to claim 4, characterized in that: A single conveying mechanism (103) comprises a plurality of travel sliding wheels (117), wherein the travel sliding wheels (117) are rotatably connected to the bottom of the inclined surface of the support frame (104), one side of the travel sliding wheel (117) extends out of the rotation position and is connected to a double-groove belt pulley (118), two adjacent double-groove belt pulleys (118) are connected via a belt (119), and the double-groove belt pulley (118) is connected to a driving belt pulley of a feeding drive motor (120) via a belt.

10. The operating method of a large diameter steel bar bending device according to claim 4, characterized in that: The method is as follows: the feeding mechanism unties the bundled steel bars and delivers a single steel bar to the feeding port of the steel bar bending machine, and moves forward to the set position under the action of the guide wheel group and the feeding roller of the steel bar bending machine, and the end portion moving forward is supported on the auxiliary support walking platform, the steel bar bending machine performs the bending operation, and the auxiliary support walking platform follows the walking auxiliary support. After the bending is completed, the bent steel bars are disassembled, the auxiliary support walking platform moves to the starting position, and the bending of the next steel bar continues.

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