A portable multi-purpose steel bar bending device and its use method

Abstract

The present invention relates to the field of steel bar engineering construction, and in particular to a portable multi-purpose steel bar bending device and a method for using the same, characterized in that it includes an upper turntable, a bottom sealing plate, an end retaining column, an iron retaining weir, a main operating lever and an auxiliary operating lever, the inner side of the upper turntable is connected to an inner raceway ring, the side of the bottom sealing plate facing the upper turntable is connected to an outer raceway ring, after the upper turntable and the bottom sealing plate are combined, a row of closely spaced balls is installed between the outer raceway ring and the inner raceway ring, and the upper turntable can rotate relative to the bottom sealing plate; the side of the bottom sealing plate is fixedly connected to a vertically extending bolt rod, and the bolt rod is connected to the end retaining column; two iron retaining weirs are arranged in parallel on the surface of the upper turntable, and the spacing between the two iron retaining weirs can be adjusted by an adjusting mechanism. Compared with the prior art, the present invention has the following beneficial effects: 1) It is light to carry and easy to use; 2) It is aimed at the problem of adjusting the secondary curvature of steel bars that have been cast in concrete; 3) It can reduce the labor intensity of the operation with the help of hoisting equipment.

Description

Technical Field

[0001] The invention relates to the field of steel bar engineering construction, and in particular to a portable multi-purpose steel bar bending device capable of manually adjusting the bending direction and curvature of the steel bar on site and a use method thereof. Background Art

[0002] During the construction process of building projects, most steel bars need to be bent into designed angles and cut into designed sizes for use. At present, there are two main methods of commonly used steel bar bending. One is manual bending, which usually requires the joint efforts of multiple people to complete, with low production efficiency and dangerous during operation; the other is to use a steel bar bending machine. Due to the functional and structural requirements of the steel bar bending machine itself, its structure is complex and large in size. Most of them are placed in fixed processing locations for use and are rarely moved. Therefore, it is very inconvenient to carry and transport, so workers have to cut the steel bars first and then place them on the steel bar bending machine to perform the bending operation. For some steel bars that have been poured in concrete, it is difficult to operate if the bending angle needs to be adjusted again.

[0003] The Chinese utility model patent with patent application number 201721619850.5 discloses a manual steel bar bending device, including a base, a rotating axis plate, a baffle and a lever. The base includes a bottom plate and a core column welded to the center of the bottom plate. The bottom plate is engraved with special angle scales. The rotating axis plate is in the shape of a "6" with a circular hole in the center of the plate. The core column passes through the circular hole of the rotating axis plate so that the rotating axis plate rotates around the core column. The baffle is divided into baffle one and baffle two. The distance between the two baffles and the core column can be adjusted by bolts. The lever is welded to baffle two, and the lever is in the form of a retractable sleeve.

[0004] The Chinese invention patent with patent application number 201811315748.5 discloses a manual steel bar bending tool and its operation method, including: an operating table base and an operating table top; the operating table top is arranged above the operating table base; the operating table top is connected to the operating table base through a connecting plate arranged in the vertical direction, and a positioning column, a clamp and a bending circle center positioning column are arranged on the operating table top; a wrench is arranged between the operating table base and the operating table top. A clamp is provided on the steel bar operating table to fix the steel bar when bending it to ensure the accuracy of the hook length; the clamp can move in the long hole of the suspended section of the flat plate according to the position of the steel bar, and the clamping plate can rotate freely along the axis of the screw rod, and will not rotate on the surface of the steel bar with the rotation of the hand wheel, reducing the impact of the clamping on the physical and mechanical properties of the steel bar.

[0005] The steel bar bending devices disclosed in the existing literature are limited by their structures and cannot be used to adjust the bending angle of steel bars that have been cast in concrete, which affects the smooth progress of the construction. Summary of the invention

[0006] The purpose of the present invention is to provide a portable multi-purpose steel bar bending device and a method of using the same, so as to overcome the shortcomings of the prior art and solve the problem that the workbench type steel bar bending machine is inconvenient to move when in use. At the same time, for the problem of adjusting the secondary curvature of steel bars that have been cast in concrete, the present invention adopts a portable structure, is suitable for manual operation, has low requirements on the use environment, and can quickly complete the bending and curvature adjustment operations of the steel bars.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] Technical solution 1: A portable multi-purpose steel bar bending device, characterized in that it includes an upper turntable, a bottom sealing plate, an end stop column, an iron stop weir, a main operating lever and an auxiliary operating lever, the inner side of the upper turntable is fixedly connected to an inner raceway ring, the side of the bottom sealing plate facing the upper turntable is fixedly connected to an outer raceway ring, after the upper turntable and the bottom sealing plate are combined, a row of closely packed balls is installed in the annular space formed between the outer raceway ring and the inner raceway ring, and the upper turntable can rotate relative to the bottom sealing plate;

[0009] A vertically extending bolt rod is fixedly connected to the side of the bottom sealing plate, the bolt rod is connected to the end stop column, and the end of the bolt rod is connected to a nut; two iron weirs are arranged in parallel on the outer surface of the upper turntable, and the spacing between the two iron weirs can be adjusted by an adjustment mechanism; one end of the main operating rod is threadedly connected to a connecting piece fixedly connected to the side of the upper turntable;

[0010] Two mounting posts for connecting the auxiliary operating rod are fixedly arranged on the bottom sealing plate. Two mounting holes are formed on the body of the auxiliary operating rod. The mounting holes match the shape and size of the mounting posts. Top screws are arranged on the mounting holes.

[0011] The adjusting mechanism comprises two racks arranged opposite to each other, a gear is provided between the two racks, the gears are respectively meshed with the two racks, the gears are gears with shafts, one end of the shaft is a top structure matching the centering hole on the bottom sealing plate, the other end of the shaft is fixedly connected to the adjusting disk, a circle of light holes is provided on the adjusting disk along the circumferential direction, the light holes and a circle of positioning threaded holes on the upper turntable are located on the same center circle, the number of the light holes and the number of threaded holes are prime numbers to each other, and a distance screw is screwed in after at least one light hole and threaded hole are aligned; one end of one of the racks is connected to one of the two iron weirs through a pin shaft, and the other end of the rack is movably connected to the inner hole of a guide sleeve on the other of the two iron weirs; a wrench operating structure is provided on the outer side of the adjusting disk.

[0012] The distance between the end stop column and the outer edge of the bottom sealing plate is adjustable.

[0013] The wrench operating structure is a square, hexagonal or hexagonal hole.

[0014] The number of the light holes is 17, and the number of the threaded holes is 13.

[0015] Technical solution 2: A method for using a portable multi-purpose steel bar bending device, characterized in that a steel bar bending device with a detachable portable structure is used to adjust the secondary bending degree of steel bars that have been cast in concrete, and the steps are as follows:

[0016] 1) Move the steel bar bending device to the vicinity of the steel bar to be adjusted, adjust the distance between the end retaining column and the outer edge of the bottom sealing plate and the spacing between the two iron retaining weirs to match the diameter of the steel bar to be adjusted, and tighten the distance screw;

[0017] 2) Place the steel bar to be adjusted between the two retaining weirs, with the end retaining column located at the bending inflection point. According to the target bending value of the steel bar to be adjusted, turn the main operating lever and the auxiliary operating lever in opposite directions until the steel bar to be adjusted meets the engineering requirements;

[0018] 3) Repeat step 2) until all the steel bars to be adjusted of the same size as step 1) are completed;

[0019] 4) According to step 1), readjust the distance between the end retaining column and the outer edge of the bottom sealing plate and the spacing between the two retaining iron weirs to adapt to the other sizes of steel bars to be adjusted, and tighten the spacing screws;

[0020] 5) Repeat step 2) until all the steel bars to be adjusted with the same size as step 4) are completed;

[0021] 6) Disassemble the main operating lever and auxiliary operating lever, and store the steel bar bending device in the warehouse.

[0022] The diameter specification of the steel bar to be adjusted is 22~30mm.

[0023] The tail end of the main operating rod and / or the auxiliary operating rod is provided with a hook ring.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1) It is light to carry, easy to use, and space-saving. It is suitable for manual operation and has low requirements for the use environment. It effectively solves the problem that the workbench-type steel bar bending machine is inconvenient to move when in use; 2) Especially for the secondary curvature adjustment problem of steel bars that have been cast in concrete, due to the adoption of a portable structure, the steel bar bending and curvature adjustment operations can be completed quickly; 3) It is equipped with a hook ring, which can be used with the help of lifting equipment to reduce the labor intensity of the operation, so that the device can be used in high-rise building construction sites. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of a portable multi-purpose steel bar bending device of the present invention.

[0027] Figure 2 It is a schematic diagram of the usage status of an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the second usage state of the embodiment of the present invention.

[0029] Figure 4 Schematic diagram of the third usage state of the embodiment of the present invention.

[0030] Figure 5 It is a front view of an embodiment of a portable multi-purpose steel bar bending device of the present invention.

[0031] Figure 6 It is a front view of an embodiment of a portable multi-purpose steel bar bending device of the present invention, in which the upper turntable is hidden to show the structure of the adjustment mechanism of the present invention.

[0032] Figure 7 yes Figure 5 Section view along line AA.

[0033] In the figure: 1-upper turntable, 2-bottom sealing plate, 3-end stop column, 4-iron weir, 5-main operating lever, 6-auxiliary operating lever, 7-inner raceway ring, 8-outer raceway ring, 9-ball, 10-bolt rod, 11-nut, 12-connector, 13-mounting column, 14-top screw, 15-rack, 16-gear, 17-adjusting plate, 18-bright hole, 19-positioning threaded hole, 20-fixed distance screw, 21-pin shaft, 22-wrench operating structure, 23-rebar to be adjusted, 24-hook ring. DETAILED DESCRIPTION

[0034] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] See Figure 1~Figure 4, is a schematic structural diagram of an embodiment of a portable multi-purpose steel bar bending device of the present invention, comprising an upper turntable 1, a bottom sealing plate 2, an end stop column 3, an iron weir 4, a main operating lever 5 and an auxiliary operating lever 6. The inner side of the upper turntable 1 is fixedly connected to an inner raceway ring 7, and the side of the bottom sealing plate 2 facing the upper turntable is fixedly connected to an outer raceway ring 8. After the upper turntable 1 and the bottom sealing plate 2 are combined, a row of closely packed balls 9 are installed in the annular space formed between the outer raceway ring 8 and the inner raceway ring 7. This structure enables the upper turntable 1 to rotate relative to the bottom sealing plate 2.

[0037] The side of the bottom sealing plate 2 is fixedly connected to a vertically extending bolt rod 10, which is connected to the end stop column 3. The end of the bolt rod 10 is connected to a nut 11. The distance between the end stop column 3 and the outer edge of the bottom sealing plate 2 can be achieved by adding an adjustment pad on the bolt rod 10. Two iron weirs 4 are arranged in parallel on the outer surface of the upper turntable 1, and the distance between the two iron weirs 4 can be adjusted by an adjustment mechanism; one end of the main operating rod 5 is threadedly connected to a connecting piece 12 fixedly connected to the side of the upper turntable 1, so that the main operating rod 5 can be removed and separated from the upper turntable 1, thereby achieving the purpose of easy carrying.

[0038] Two mounting posts 13 for connecting the auxiliary operating rod are fixedly provided on the bottom sealing plate 2. Two mounting holes are opened on the rod body of the auxiliary operating rod 6. The mounting holes match the shape and size of the mounting posts 13. A top screw 14 is provided on the mounting hole. This structure enables the auxiliary operating rod 6 to be detached and separated from the bottom sealing plate 2, thereby achieving the purpose of easy carrying.

[0039] The adjustment mechanism includes two racks 15 arranged opposite to each other, a gear 16 is arranged between the two racks, and the gear 16 meshes with the two racks 15 respectively. The gear 16 is a gear with a shaft, one end of the shaft is a top structure matching the centering hole on the bottom sealing plate 2, and the other end of the shaft is fixedly connected to the adjustment disk 17. A circle of light holes 18 are arranged on the adjustment disk 17 along the circumferential direction. The light holes and a circle of positioning threaded holes 19 on the upper turntable 1 are located on the same center circle. The number of light holes 18 and the number of positioning threaded holes 19 are prime numbers to each other, for example, the number of light holes is 17 and the number of positioning threaded holes is 13. When the adjustment disk is rotated by 1.629°, a light hole 18 and a positioning threaded hole 19 can be aligned, and the fixed distance screw 20 is screwed in for limiting, so that the gears are positioned relative to the racks and do not rotate, so that the spacing between the two iron weirs can be adjusted and maintained. A wrench operating structure 22 is arranged on the outside of the adjustment disk 18, and the wrench operating structure 22 can select square, hexagonal or hexagonal holes, which can achieve the purpose of the present invention.

[0040] One end of the rack 151 is connected to the iron weir 401 through a pin 21, and the other end of the rack is movably connected to the inner hole of the guide sleeve 201 on the iron weir 402. Similarly, one end of the rack 152 is connected to the iron weir 402 through a pin 21, and the other end of the rack is movably connected to the inner hole of the guide sleeve 202 on the iron weir 401. This structure drives the synchronous horizontal movement of the iron weir through the reverse movement of the rack.

[0041] The invention discloses a method for using a portable multi-purpose steel bar bending device, which is to adjust the secondary bending degree of steel bars already cast in concrete by using the steel bar bending device with a detachable portable structure, and the steps are as follows:

[0042] 1) Move the steel bar bending device to the vicinity of the steel bar 23 to be adjusted, adjust the distance between the end retaining column 3 and the outer edge of the bottom sealing plate 2 and the spacing between the two iron retaining weirs 401 and 402 to match the steel bar 23 to be adjusted, and tighten the spacing screw 20 to keep the distance value fixed.

[0043] 2) The steel bar 23 to be adjusted is placed between the two iron retaining weirs, with the end retaining column 3 located at the bending inflection point A. The main operating lever 5 and the auxiliary operating lever 6 are rotated in opposite directions according to the target bending value of the steel bar 23 to be adjusted until the curvature of the steel bar 23 to be adjusted meets the engineering requirements;

[0044] 3) Repeat step 2) until all the steel bars to be adjusted of the same size as step 1) are completed;

[0045] 4) According to step 1), readjust the distance between the end retaining column 3 and the outer edge of the bottom sealing plate 2 and the spacing between the two retaining iron weirs 401 and 402 to adapt to the steel bars of other sizes to be adjusted, and tighten the spacing screws 20;

[0046] 5) Repeat step 2) until all the steel bars to be adjusted with the same size as step 4) are completed;

[0047] 6) Disassemble the main operating lever 5 and the auxiliary operating lever 6, and store the steel bar bending device in the warehouse.

[0048] The invention is applicable to the steel bar diameter specification to be adjusted of 22-30 mm, because the steel bar diameter below 22 mm can be directly operated with a wrench, while the steel bar diameter above 30 mm is difficult to bend with a manual device.

[0049] In the embodiment, a hook ring 24 may be provided at the tail end of the main operating lever 5 and / or the auxiliary operating lever 6, which can be lifted with the help of lifting equipment. The operator does not need to bear the weight of the device, which can effectively reduce the labor intensity of the operation, so that the device can be used in high-rise building construction sites to avoid the influence of the excessive weight of the device on the operator's moving center of gravity and eliminate safety hazards.

[0050] The invention can be used for bending steel bars at construction sites without any site restrictions and can be used indoors or outdoors. The invention can be adjusted in size according to actual needs, and is easy to install and disassemble, convenient to carry, requires little labor, can be operated by one person, and saves construction costs.

Claims

1. A portable multi-purpose steel bar bending device, characterized in that: It includes an upper turntable, a bottom sealing plate, an end stop column, an iron weir, a main operating lever and an auxiliary operating lever. The inner side of the upper turntable is fixedly connected to the inner raceway ring, and the side of the bottom sealing plate facing the upper turntable is fixedly connected to the outer raceway ring. After the upper turntable and the bottom sealing plate are combined, a row of closely packed balls is installed in the annular space formed between the outer raceway ring and the inner raceway ring, and the upper turntable can rotate relative to the bottom sealing plate. The side of the bottom sealing plate is fixedly connected to a bolt rod extending vertically outward, the bolt rod is connected to the end stop column, and the end of the bolt rod is connected to a nut; two iron stop weirs are arranged in parallel on the outer surface of the upper turntable, and the distance between the two iron stop weirs can be adjusted by an adjustment mechanism; one end of the main operating rod is threadedly connected to a connecting piece fixedly connected to the side of the upper turntable; the distance between the end stop column and the outer edge of the bottom sealing plate is adjustable; Two mounting posts for connecting the auxiliary operating rod are fixedly arranged on the bottom sealing plate, and two mounting holes are opened on the rod body of the auxiliary operating rod, and the mounting holes match the shape and size of the mounting posts, and the mounting holes are provided with top screws; The adjusting mechanism comprises two racks arranged opposite to each other, a gear is provided between the two racks, the gears are respectively meshed with the two racks, the gears are gears with shafts, one end of the shaft is a top structure matching the centering hole on the bottom sealing plate, the other end of the shaft is fixedly connected to the adjusting disk, a circle of light holes is provided on the adjusting disk along the circumferential direction, the light holes and a circle of positioning threaded holes on the upper turntable are located on the same center circle, the number of the light holes and the number of threaded holes are prime numbers to each other, and a fixed distance screw is screwed on at least one light hole and the threaded hole after alignment; one end of one of the racks is connected to one of the two iron stop weirs through a pin shaft, and the other end of the rack is movably connected to the inner hole of a guide sleeve on the other iron stop weir of the two iron stop weirs; a wrench operating structure is provided on the outer side of the adjusting disk.

2. A portable multi-purpose steel bar bending device according to claim 1, characterized in that: The wrench operating structure is a square, hexagonal or hexagonal hole.

3. A portable multi-purpose steel bar bending device according to claim 1, characterized in that: The number of the light holes is 17, and the number of the threaded holes is 13.

4. A method for using a portable multi-purpose steel bar bending device, characterized in that: Using the portable multi-purpose steel bar bending device described in claim 1, the steel bars that have been cast in concrete are adjusted for secondary bending, and the steps are as follows: 1) Move the steel bar bending device to the vicinity of the steel bar to be adjusted, adjust the distance between the end retaining column and the outer edge of the bottom sealing plate and the spacing between the two iron retaining weirs to match the diameter of the steel bar to be adjusted, and tighten the distance screw; 2) Place the steel bar to be adjusted between the two retaining weirs, with the end retaining column located at the bending inflection point. According to the target bending value of the steel bar to be adjusted, turn the main operating lever and the auxiliary operating lever in opposite directions until the steel bar to be adjusted meets the engineering requirements; 3) Repeat step 2) until all the steel bars to be adjusted of the same size as step 1) are completed; 4) According to step 1), readjust the distance between the end retaining column and the outer edge of the bottom sealing plate and the spacing between the two retaining iron weirs to adapt to the other sizes of steel bars to be adjusted, and tighten the spacing screws; 5) Repeat step 2) until all the steel bars to be adjusted of the same size as step 4) are completed; 6) Disassemble the main operating lever and auxiliary operating lever, and store the steel bar bending device in the warehouse.

5. The method for using the portable multi-purpose steel bar bending device according to claim 4, characterized in that: The diameter specification of the steel bar to be adjusted is 22~30mm.

6. The method for using the portable multi-purpose steel bar bending device according to claim 5, characterized in that: The tail end of the main operating rod and / or the auxiliary operating rod is provided with a hook ring.

Images