Reinforcing steel bar bundling and fixing device for building

Abstract

The invention relates to the technical field of on-site construction tools of building materials, in particular to a building steel bar bundling and fixing device which is composed of an electric hand drill and a clamping and rotating device, the clamping and rotating device comprises a main rod, a fixing base, a fixing shaft, sliding sleeves, side pliers and a drawing-in mechanism, the fixing base is arranged at the front end of the main rod, the fixing shaft is arranged in the center of the fixing base, and the two sliding sleeves are arranged on the outer side of the fixing shaft in a sleeving mode; the side clamp is composed of two driving handles, the far ends of the handles are provided with chucks, the near ends of the handles are provided with hinge holes, the upper side and the lower side of the sliding sleeve are provided with hinge lugs, the upper side lug is hinged to the upper side clamp body, and the lower side lug is hinged to the lower side clamp body. And the electric hand drill rotates to drive the clamping and rotating device to screw two ends of the binding wire. The device is driven by a common electric hand drill, a complex electric system and equipment are not needed, the production and purchase cost and maintenance cost are reduced, the economical efficiency is improved, the device is light and easy to operate, only an electric drill switch needs to be pressed, the labor intensity is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of on-site construction tools for building materials, and in particular relates to a steel bar bundling and fixing device for construction. Background Art

[0002] At present, the steel bar binding and fixing devices for construction on the market mostly rely on traditional manual or electric binding tools, which mainly connect and fix the steel bars and the wires by mechanical means. However, the existing steel bar binding devices generally have the following problems: First, the binding device structure is relatively complex, and it is often necessary to configure multiple components such as wire rollers, propulsion motors, and wire guide grooves, which makes the device larger in size, heavier in weight, and inconvenient to operate; secondly, since these devices usually need to carry complex components such as bulky wire rollers and propulsion motors, the equipment is not flexible enough during use and transportation, which increases the labor intensity; thirdly, the existing devices lack effective clamping and fixing of the two ends of the wire, and usually need to repeatedly wrap the wire around multiple times before bundling, resulting in waste of wire; in addition, the durability of such devices is poor, they are easy to damage, and the cost of maintenance and replacement of parts is high.

[0003] In the prior art, a representative steel bar bundling device includes a steel bar bundling head with a publication number of CN116255014A, which is equipped with a power drive motor and a wire feeding drive motor, and performs different power controls on twisting and wire feeding respectively. The steel bar bundling head is powered by the main power supply on the mechanical arm to ensure the independence and efficiency of wire feeding and twisting. In addition, the device is also equipped with a wire binding roller, a propulsion motor and a wire guide groove to complete the steel bar bundling work. Although this technology makes the operation more precise by separating the control of twisting and wire feeding, there are still some significant problems. Complex structure and easy to damage: the existing device is usually equipped with complex wire binding rollers, propulsion motors and wire guide grooves, resulting in bulky devices with poor durability and high maintenance costs. Inconvenient and inflexible operation: multiple components need to be carried, such as wire binding rollers, propulsion motors, etc., which are inconvenient to operate and inflexible to transport. Serious waste of wire binding: due to the lack of a clamping device, the two ends of the wire binding are not fixed, and it is often necessary to wrap multiple circles to fix it during bundling, resulting in a large amount of wire binding and serious waste.

[0004] In the prior art, a small automatic steel bar bundling machine (CN220522023U) discloses the technical features of realizing the clamping and twisting of the clamping device, which includes a pistol drill, a bundling head and a wire. The bundling head is provided with two symmetrical flow diversion channels, and two locking channels are symmetrically provided between the step hole and the two flow diversion channels. When operating, it is only necessary to roughly align the two ends of the wire with the flow diversion channels. However, the flow diversion channel in the bundling machine is a closed perforated structure, which leads to the problem of difficulty in threading the wire. The bundling machine does not have a pulling mechanism, and the pulling mechanism cannot realize the function of synchronously clamping the two ends of the bundling wire. The wire pliers with guard clamps (CN101844335A) disclose wire pliers with guard clamps, which can prevent the bundling wire from falling off, but the wire pliers cannot realize the functions of symmetrical distribution and synchronous pulling.

[0005] Therefore, there is an urgent need for a steel bar bundling and fixing device with a simple structure, easy use, synchronous pulling and high durability. Summary of the invention

[0006] In view of the defects and problems existing in the prior art, the present invention provides a construction steel bar bundling and fixing device which is simple in structure, lightweight, low in cost and easy to operate, aiming to improve the steel bar bundling efficiency, reduce the amount of binding wire used, and at the same time be compatible with different types of electric hand drills, thereby reducing the labor intensity of users and optimizing the bundling process.

[0007] The solution of the present invention to solve its technical problem is: a steel bar bundling and fixing device for construction is adopted, including a hand-held electric drill and a clamp and twister, the clamp and twister includes a main rod, a fixed seat, a fixed shaft, a sliding sleeve, a side clamp and a pulling mechanism, a fixed seat is fixed at the front end of the main rod, a fixed shaft is fixed at the center of the fixed seat, two sliding sleeves are mounted on the outer side of the fixed shaft, the two sliding sleeves are respectively located on the left and right sides of the fixed seat, a pulling mechanism is arranged between each sliding sleeve and the fixed seat, and a reset spring is arranged between the fixed seat and the sliding sleeve; the side clamp includes two driving handles, the two driving handles are hinged together by a pin shaft, a chuck is arranged on the inner side of the distal end of each driving handle, and a hinge hole is arranged on the proximal end of each driving handle; symmetrical hinge ears are fixed on the upper and lower sides of each sliding sleeve, and the left and right two sliding sleeves are respectively fixed. A pair of hinged ears on the upper side of the sleeve are hinged to the two hinged holes of the upper side clamp, and a pair of hinged ears on the lower sides of the left and right sliding sleeves are hinged to the two hinged holes of the lower side clamp; the pulling mechanism is used to bring the left and right sliding sleeves closer inward, driving the upper side clamp and the lower side clamp to shrink synchronously; the rear end of the main rod is inserted into the locker of the electric hand drill, and the rotation of the electric hand drill is controlled to rotate the entire clamp, thereby driving the two ends of the pre-wound wire to be twisted, and the pulling mechanism is an electromagnetic pulling mechanism or a wire drawing pulling mechanism, and the electromagnetic pulling mechanism includes electromagnets fixed on the left and right sides of the fixed seat, respectively, and the left and right sliding sleeves are pulled inward by the electromagnets; the wire drawing pulling mechanism includes a wire drawing installed in the fixed seat, and the wire drawing is driven by the traction mechanism to pull the left and right sliding sleeves inward.

[0008] Preferably, the electromagnetic pulling mechanism also includes a conductive ring rotor sleeved on the outer side of the rear portion of the main rod, the conductive wire of the electromagnet is introduced from the inner cavity of the main rod and electrically connected to the electrode of the conductive ring rotor, a conductive ring stator is sleeved on the outer side of the conductive ring rotor, and the electrode of the conductive ring stator is connected to the switch of the electric drill, and when the switch of the electric drill is pressed to energize the motor of the electric drill, the electromagnet is also energized at the same time.

[0009] Preferably, auxiliary rods are symmetrically fixed on the left and right sides of the main rod, and support sleeves are respectively fixed to the distal ends of the auxiliary rods on both sides, and the support sleeves on both sides are respectively fixed to the left and right ends of the fixed shaft.

[0010] Preferably, an arc-shaped groove is provided on the inner wall of the chuck, an arc-shaped clamping block is sleeved in the arc-shaped groove, clamping teeth are provided on the inner side surface of the arc-shaped clamping block, and the outer side surface is an arc surface, an arc-shaped dovetail groove is provided at the bottom of the arc-shaped groove, and an arc-shaped dovetail strip is provided at the center of the arc surface of the arc-shaped clamping block, and the dovetail strip is assembled in the dovetail groove.

[0011] Preferably, the electromagnet includes a yoke and an electromagnetic coil. The yoke is I-shaped with an annular groove in the middle. The electromagnetic coil is densely wound in the annular groove. The inner end wing plate of the yoke is fixed to the fixed seat. The outer end wing plate of the yoke is used to attract the suction cup fixed at the inner end of the sliding sleeve.

[0012] Preferably, a mounting seat is fixed on the side of the hand drill, an auxiliary frame is fixed on the front side of the mounting seat, two ferrules are fixed on the front end of the auxiliary frame, and connecting hole seats are symmetrically fixed on the side wall of the conductive ring stator, and radial screws are used to fix the two ferrules and the two connecting hole seats together respectively; a wire sleeve is fixed on the inner side of the auxiliary frame, and a power cord is sleeved inside the wire sleeve; a plug head is provided on the side wall of the conductive ring stator, the plug head is connected to the stator electrode, and the end of the power cord is plugged into the plug head.

[0013] Preferably, the wire drawing and pulling mechanism also includes a core rod, a wire is mounted in the inner cavity of the main rod, a stopper is fixed to the outer end of the wire, a baffle is fixed to the inner end of the sliding sleeve on both sides, the stopper is supported on the outer end of the baffle, an inner slider is mounted in the main rod, the inner end of the wire is fixed to the inner slider, the inner slider is fixedly connected to the core rod, and the rear end of the core rod is connected to the traction mechanism.

[0014] Preferably, the traction mechanism includes a fixed handle and a movable handle. Fixed frames are fixed on both sides of the rear end of the electric hand drill. The fixed handle is laterally fixed to the rear end of the fixed frame. The movable handle is located on the inner side of the fixed handle. The rear end of the core rod is connected to the pull rod through a rotating joint, and the movable handle is fixed to the rear end of the pull rod.

[0015] Preferably, the hand drill is a straight-through electric drill, and the motor in the straight-through electric drill is a hollow shaft motor, and the core rod is inserted into the hollow shaft of the motor.

[0016] Preferably, a driving gear and a driven gear are meshed in the hand drill housing, and the two gears are respectively installed in the bearing seat in the hand drill housing through bearings, the motor shaft is connected to the driving gear, and a through hole is set in the center of the driven gear, and the core rod is sleeved in the through hole of the driven gear.

[0017] Based on the above scheme, the steel bar binding and fixing device for construction has the following beneficial effects: 1. Simplified structure and low cost: By using a hand drill as a driving tool, the complex electric system and additional equipment are eliminated, the production and procurement costs of the equipment are reduced, and the maintenance costs are reduced, thereby improving the economy.

[0018] 2. Lightweight design and convenient use: The device is lightweight and the user only needs to press the hand drill switch to start the clamp and twist device, which simplifies the operation process, reduces manual labor intensity, and improves work efficiency.

[0019] 3. Save the amount of wire used: Through the unique clamping design, the two ends of the wire are first effectively clamped, and then rotated and tied, so there is no need to worry about wire slippage, which can reduce the amount of wire used and avoid waste.

[0020] 4. Efficient clamping and automatic adaptation: The V-shaped design of the side clamp and the automatic rotation of the arc-shaped clamp block can ensure that different shapes or multiple strands of wires are firmly clamped, avoiding the problem that traditional clamps cannot adapt to the shape of wires, and improving the clamping stability and accuracy.

[0021] 5. Strong compatibility and a variety of electric drill options: supports handle-type electric drills and straight-through electric drills. Users can choose different types of electric drills according to their needs, and the requirements for electric drill modification are low, making it more flexible to use and highly adaptable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the steel bar bundling and fixing device according to Embodiment 1 of the present invention; Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure of the middle clamp rotator; Figure 3 yes Figure 2 Schematic diagram of the assembly relationship of the clamping and rotating device; Figure 4 It is a front view of the clamping and rotating device; Figure 5 This is a schematic diagram comparing the clamping and resetting of the clamping and rotating device; Figure 6 is a schematic diagram of the front structure of the steel bar bundling and fixing device of Example 2; Figure 7 yes Figure 6 A schematic diagram of the partially enlarged structure of the middle clamp rotator; Figure 8It is a three-dimensional structural schematic diagram of another steel bar bundling and fixing device; Fig. 9 yes Figure 6 Schematic diagram of the structure of a straight-through electric drill.

[0023] The numbers in the figure are: main rod 1; fixed seat 2; fixed shaft 3; sliding sleeve 4; hinged ear 5; yoke 6; electromagnetic coil 7; suction cup 8; auxiliary rod 9; support sleeve 10; shaft end lock nut 11; connecting bolt 12; driving handle 13; chuck 14; pin 15; arc groove 16; arc block 17; dovetail strip 18; hinge hole 19; conductive ring rotor 20; conductive ring stator 21; connecting hole seat 22; plug joint head 23; rotating plug rod 24; auxiliary frame 25; wire Sleeve 26; ferrule 27; radial screw 28; handle-type electric drill 29; locker 30; switch 31; pre-wound wire 32; straight-through electric drill 33; rear end plate 34; end plate fixing wire 35; side reinforcement seat 36; fixing frame 37; fixed handle 38; movable handle 39; pull rod 40; rotary joint 41; core rod 42; inner slide 43; wire drawing 44; block 45; baffle 46; guide wheel 47; return spring 48; mounting seat 49. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The steel bar binding and fixing device for construction has the following characteristics: (1) simple structure, durable and not easy to damage, with very low procurement and maintenance costs. (2) lightweight, no need to carry bulky wire rollers and additional propulsion motors and other structures. (3) easy to use, only need to press the hand drill switch 31 to achieve the clamping and twisting of the clamp. (4) After the two ends of the wire are clamped, the knob is turned to save the amount of wire. The device mainly includes a hand drill and a clamp. The hand drill can use either a handle-type electric drill 29 or a straight-through electric drill 33. The following embodiment 1 uses a handle-type electric drill 29, and there is almost no need to make major modifications to the hand drill. The power cord can be drawn from the switch of any hand drill and the plug can be worn. Embodiment 2 uses a straight-through electric drill 33. For example, for an ordinary straight-through electric drill 33, after replacing the motor in the straight-through electric drill 33 with a hollow shaft motor, the handle assembly structure is fixed at the rear end of the straight-through electric drill 33 and the drill can be used; or a special straight-through electric drill 33 is used, such as Figure 8 As shown, the straight-through electric drill 33 only needs to have a rotation function.

[0025] Embodiment 1: A steel bar binding and fixing device for construction, comprising a handle-type electric drill 29 and a clamping and twisting device, the assembly relationship between the clamping and twisting device and the handle-type electric drill 29 is as follows: Figure 1 As shown. Figure 2 and Figure 3As shown, the clamping device mainly includes a main rod 1, a fixed seat 2, a fixed shaft 3, a sliding sleeve 4, a pair of side clamps and a pulling mechanism. The front end of the main rod 1 is fixed with a fixed seat 2, and the center of the fixed seat 2 is transversely fixed with a fixed shaft 3. There are two left and right sliding sleeves 4 on the left and right sides of the fixed seat 2, and the two sliding sleeves 4 are respectively mounted on the outside of the fixed shaft 3, and the left and right sliding sleeves 4 can slide axially along the fixed shaft 3 respectively. A pulling mechanism is set between the sliding sleeve 4 on each side and the fixed seat 2. In order to keep the sliding sleeves 4 on the left and right sides able to automatically reset outward, a reset spring 48 is mounted between the fixed seat 2 and the sliding sleeve 4.

[0026] like Figure 3 and Figure 4 As shown, each side clamp includes two driving handles 13, each driving handle 13 is V-shaped to achieve the best clamping angle. The middle parts of the two driving handles 13 are hinged together by a pin 15, and a chuck 14 is provided on the inner side of the distal end of each driving handle 13, and a hinge hole 19 is provided at the proximal end of each driving handle 13. Symmetrical hinge ears 5 are fixed to the upper and lower sides of each sliding sleeve 4, respectively. A pair of hinge ears 5 on the upper sides of the left and right sliding sleeves 4 are hinged to the two hinge holes 19 of the upper side clamp; a pair of hinge ears 5 on the lower sides of the left and right sliding sleeves 4 are hinged to the two hinge holes 19 of the lower side clamp, as shown in FIG. Figure 4 shown.

[0027] By controlling the pulling mechanism, when the left and right side sliding sleeves 4 are moved inward, the upper side clamp and the lower side clamp can be driven to contract synchronously to clamp the two ends of the pre-wound binding wire 32.

[0028] Since the wire is usually bent into two or more strands, in order to ensure that the multiple strands of wire can be clamped inside a pair of chucks 14, an arc groove 16 is provided on the inner wall of the chuck 14, and an arc clamping block 17 is sleeved inside the arc groove 16. The inner side surface of the arc clamping block 17 is provided with clamping teeth, and the outer side surface is an arc surface. An arc dovetail strip 18 is provided at the bottom of the arc groove 16, and an arc dovetail strip 18 is provided at the center of the arc surface of the arc clamping block 17. The dovetail strip 18 is assembled in the dovetail groove and can rotate freely. Regardless of the position of the arc clamping blocks 17 on both sides, the arc clamping blocks 17 can automatically rotate to clamp each strand of wire.

[0029] The rear end of the main rod 1 is inserted into the locker 30 of the hand drill. Preferably, a rotating rod 24 (in the shape of a hexagonal prism) is fixed to the rear section of the main rod 1. The rotating rod 24 is used as the insertion part of the rear end of the main rod 1 and is inserted together with the axial direction of the locker 30. When the clamping screw is assembled with the handle-type electric drill 29, the entire clamping screw is rotated by controlling the rotation of the hand drill, thereby driving the two ends of the pre-wound wire 32 to be screwed.

[0030] The pulling mechanism is an electromagnetic pulling mechanism or a wire drawing pulling mechanism.

[0031] An electromagnetic pulling mechanism such as Figure 3 and Figure 4 As shown, a yoke 6 is fixed on the left and right sides of the fixing seat 2 (the yoke 6 is an I-shaped, with a ring groove in the middle, and the electromagnetic coil 7 is tightly wound in the ring groove. The inner end wing plate of the yoke 6 is fixed to the fixing seat 2, and the outer end wing plate of the yoke 6 is used to attract the suction cup 8 fixed at the inner end of the sliding sleeve 4), which is used to attract the left and right sliding sleeves 4. Figure 5 As shown, the suction cup 8 is attracted by the magnetic yoke 6, so that the left and right sliding sleeves 4 slide inwardly along the fixed shaft 3, thereby clamping the chuck 14.

[0032] At the same time, a conductive ring rotor 20 (including a conductive ring rotor 20 and a conductive ring stator 21) is mounted on the outer rear side of the main rod 1. The conductive wire of the yoke 6 is introduced from the inner cavity of the main rod 1 and is electrically connected to the electrode of the conductive ring rotor 20. The electrode of the conductive ring stator 21 is connected to the switch 31 of the hand drill through a power cord. When the hand drill switch 31 is pressed to energize the motor of the hand drill, the yoke 6 is also energized at the same time.

[0033] A mounting seat 49 is fixed on the left or right side of the handle-type electric drill 29 (the mounting seat 49 is fixed by screws or a steel ring is sleeved on the outer side of the handle-type electric drill 29, and the mounting seat 49 is fixed on the steel ring), and an auxiliary frame 25 is fixed on the front side of the mounting seat 49. Two ferrules 27 are fixed to the front end of the auxiliary frame 25. At the same time, a connecting hole seat 22 is symmetrically fixed on the side wall of the conductive ring stator 21. The two ferrules 27 are fixed to the two connecting hole seats 22 respectively through radial screw rods 28. A wire sleeve 26 is fixed on the inner side of the auxiliary frame 25, and the power cord is sleeved in the wire sleeve 26. A plug head 23 is arranged on the side wall of the conductive ring stator 21, and the plug head 23 is connected to the stator electrode. The end of the power cord is plugged into the plug head 23.

[0034] In order to improve the structural strength of the clamp, auxiliary rods 9 are symmetrically fixed on the left and right sides of the main rod 1. The auxiliary rods 9 are provided with through holes at the ends close to the main rod 1. Corresponding connecting bolts 12 are provided on both sides of the main rod 1. The through holes of the auxiliary rod 9 are inserted into the connecting bolts 12, and nuts are installed on the outer ends of the connecting bolts 12, so that the auxiliary rod 9 is installed on the main rod.

[0035] Support sleeves 10 are fixed to the ends (i.e., distal ends) of the auxiliary rods 9 on both sides away from the main rod 1, and the support sleeves 10 on both sides are respectively fixed to the left and right ends of the fixed shaft 3, and shaft end lock nuts 11 are installed on the ends of the fixed shaft 3 to prevent the support sleeves 10 from falling off the fixed shaft 3.

[0036] When using this embodiment, after the left hand passes the U-shaped wire through the cross point of the steel bar, the two ends of the wire are pressed into the two pairs of chucks 14 of the clamp and the right hand presses the switch of the handle electric drill 29. Specifically, the steps for using the steel bar bundling and fixing device in this embodiment are as follows: first, insert the rear end of the main rod 1 of the clamp into the lock 30 of the hand drill to ensure that the clamp is firmly connected to the hand drill, and insert the rotating rod 24 to fix it at the connection with the electric drill. When in use, pass the wire through the cross point of the steel bar to ensure that both ends of the wire can contact the clamp. Use the right hand to press the switch 31 of the hand drill, start the hand drill, and start driving the clamp. After the hand drill is started, the clamp rotates accordingly, and is driven by the motor to drive the two ends of the pre-wound wire 32 to be twisted, wherein the chuck 14 automatically clamps the wire to ensure that the two ends of the wire are firmly wrapped around the steel bar to complete the bundling action. During the bundling process, the hand drill will continue to rotate the clamp, and the wire will gradually tighten under the clamping of the chuck. After bundling is completed, release the hand drill switch to stop the motor. Easily remove the clamp and twister, disconnect it from the hand drill, and proceed to the next operation or cleaning and maintenance.

[0037] The steel bar bundling can be completed through simple operation. The design of the device greatly reduces the labor input and time cost. During use, the amount of wire used is effectively controlled. Usually, the wire only needs to be folded in half and bent into a U shape to avoid waste. At the same time, the bundling effect is tight and reliable, which improves work efficiency and quality.

[0038] Embodiment 2: Another steel bar binding and fixing device for construction, the pulling mechanism is different from that of embodiment 1, and this embodiment adopts a wire drawing pulling mechanism. Figure 6-Figure 9 As shown, a guide wheel 47 is installed in the inner cavity of the fixed seat 2 through the fixed shaft 3, and baffles 46 are fixed to the inner ends of the sliding sleeves 4 on both sides. A wire drawing 44 is set in the inner cavity of the main rod 1, and a stopper 45 is fixed to the outer end of the wire drawing 44. The stopper 45 is supported on the outer end of the baffle 46. The wire drawing 44 is introduced into the inner cavity of the fixed seat 2 from the side hole of the fixed seat 2 and is located in the groove of the guide wheel 47. An inner slider 43 is set in the main rod 1. The inner slider 43 and the inner wall of the main rod 1 are provided with a key and keyway assembly structure to prevent the inner slider 43 from rotating. The inner ends of the wire drawing 44 are respectively fixed to the inner slider 43, and the inner slider 43 is fixedly connected to the core rod 42.

[0039] When the rear end of the main rod 1 is inserted into the locker 30 of the hand drill and fixed, the rear end of the core rod 42 is connected to the pull rod 40 through the rotary joint 41, and a movable handle 39 is fixed to the rear end of the pull rod 40. At the same time, a fixing frame 37 is fixed on both sides of the rear end of the hand drill, and a fixed handle 38 is laterally fixed to the rear end of the fixing frame 37, and the movable handle 39 is located on the inner side of the fixed handle 38. During operation, the fixed handle 38 and the movable handle 39 are held by one hand at the same time. When the movable handle 39 is pulled backward, the wire drawing 44 can be pulled backward through the core rod 42, and then the sliding sleeves 4 on both sides are pulled inward, so as to realize the contraction clamping of the upper and lower side clamps. At the same time, a sliding switch is arranged in the middle of the core rod 42 (a guide sleeve is fixed in the inner cavity of the hand drill, the core rod 42 is sleeved in the guide sleeve, a guide piece is fixed on the outer side of the core rod 42, a guide ring is fixed in the guide sleeve, the guide piece and the guide ring serve as two terminals of the switch, when the core rod 42 moves backward to the limit position, the guide piece on the outer side of the core rod 42 contacts the guide ring on the inner wall of the guide sleeve, and the hand drill motor can be powered on), when the movable handle 39 moves backward and approaches the fixed handle 38, the upper and lower side clamps shrink synchronously to clamp the two ends of the pre-wound wire 32. At the same time, the rotation of the hand drill causes the entire clamp to rotate, thereby driving the two ends of the pre-wound wire 32 to be twisted.

[0040] The hand drill in this embodiment preferably adopts a straight-through electric drill 33, and the motor in the straight-through electric drill 33 is a hollow shaft motor. In this case, the core rod 42 can be inserted into the hollow shaft of the motor, and the structure is simple and reliable. Figure 8 As shown, a rear end plate 34 is fixed to the rear end of the straight-through electric drill 33, and the four sides of the rear end plate 34 are fixedly connected to the main body of the straight-through electric drill 33 by end plate fixing wires 35, wherein a through assembly hole is set in the middle of the rear end plate 34, and after the ordinary motor is replaced with the hollow shaft motor shown in the figure, the rear end of the hollow shaft of the hollow shaft motor is located in the assembly hole. Side reinforcement seats 36 are fixed to the upper and lower side walls of the rear end of the main body of the straight-through electric drill 33, respectively, for fixing the fixing frame 37.

[0041] The hand drill in this embodiment can also adopt a double gear assembly (the driving gear and the driven gear are meshed, and the two gears are respectively installed in the bearing seat in the hand drill housing through bearings), the motor shaft is connected to the driving gear, and a through hole is set in the center of the driven gear, and the core rod 42 is sleeved in the through hole of the driven gear.

[0042] The steps for using the steel bar bundling and fixing device in this embodiment are as follows: connect the hand drill, fix the locker 30 of the straight-through electric drill to the rear end of the main rod 1 of the clamp and rotator to ensure a stable connection. After passing the wire through the intersection of the steel bars, put the two ends of the wire into the two pairs of chucks 14 of the clamp and rotator. Manually pull the movable handle 39 backward, drive the wire drawing 44 through the core rod 42, and pull the sliding sleeves 4 on both sides inward. This action causes the upper and lower side clamps to shrink synchronously, effectively clamping the two ends of the wire, ensuring that the wire is firmly fixed. During this process, the motor is started at the same time, driving the clamp and rotator to start rotating, and the two ends of the wire continue to be twisted under the clamping of the chuck. The motor drives the straight-through electric drill to rotate, and the clamp and rotator winds and tightens the wire during the rotation process. During the bundling process, the electric drill and the clamp and rotator work together to ensure that the wire will not loosen. The design of the chuck ensures that the wire can automatically adapt and clamp when multiple strands are wound, avoiding the phenomenon of uneven clamping. After bundling is completed, release the switch of the electric drill to stop the motor, easily remove the clamp and twister, disconnect it from the electric drill, and prepare for the next bundling work.

[0043] The design of the wire drawing and pulling mechanism in this embodiment makes the clamping action more stable and accurate, ensuring that the wire is firm and not loose during the bundling process, thereby improving the bundling quality. The application of a straight-through electric drill simplifies the structure, and at the same time drives the wire drawing operation through the core rod, thereby improving work efficiency and reducing operational complexity. The device further improves the degree of automation through electrical control and precise clamping, reduces human operation errors, and makes the entire bundling process more reliable and efficient.

[0044] The above specific embodiments of the present invention are only used for illustrative explanation or explanation of the principle of the present invention, and do not constitute a limitation of the present invention. Therefore, any modification, equivalent substitution, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Finally, a few points should be explained: First, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "install", "connect", and "connect" should be understood in a broad sense, which can be a mechanical connection or an electrical connection, or the internal connection of two components, or directly connected, and "up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

Claims

1. A steel bar tying and fixing device for construction, characterized in that: The invention comprises a hand drill and a clamp and a rotary device, wherein the clamp and the rotary device comprises a main rod (1), a fixed seat (2), a fixed shaft (3), a sliding sleeve (4), a side clamp and a pulling mechanism. The front end of the main rod (1) is fixed with a fixed seat (2), the center of the fixed seat (2) is fixed with a fixed shaft (3), two sliding sleeves (4) are sleeved on the outer side of the fixed shaft (3), the two sliding sleeves (4) are respectively located on the left and right sides of the fixed seat (2), a pulling mechanism is arranged between each sliding sleeve (4) and the fixed seat (2), and a reset spring (48) is sleeved between the fixed seat (2) and the sliding sleeve (4); the side clamp comprises two driving handles (13), the two driving handles (13) are hinged together through a pin shaft (15), a chuck (14) is arranged on the inner side of the distal end of each driving handle (13), and a hinge hole (19) is arranged on the proximal end of each driving handle (13); symmetrical hinge ears (5) are fixed on the upper and lower sides of each sliding sleeve (4), and the left and right two hinge ears (5) are respectively fixed on the upper and lower sides of each sliding sleeve (4). A pair of hinged ears (5) on the upper side of the sliding sleeve (4) are hinged to two hinged holes (19) of the upper side clamp, and a pair of hinged ears (5) on the lower side of the left and right sliding sleeves (4) are hinged to two hinged holes (19) of the lower side clamp; the pulling mechanism is used to move the left and right sliding sleeves (4) closer together, thereby driving the upper side clamp and the lower side clamp to shrink synchronously; the rear end of the main rod (1) is inserted into the locking device (30) of the hand electric drill, and the rotation of the hand electric drill is controlled to rotate the entire clamp, thereby driving the two ends of the pre-wound wire (32) to be twisted; the pulling mechanism is an electromagnetic pulling mechanism or a wire drawing pulling mechanism, and the electromagnetic pulling mechanism includes electromagnets fixed on the left and right sides of the fixing seat (2), respectively, and the electromagnets drive the left and right sliding sleeves (4) to be pulled inward; the wire drawing pulling mechanism includes a wire drawing (44) installed in the fixing seat (2), and the wire drawing (44) is driven by the traction mechanism to drive the left and right sliding sleeves (4) to be pulled inward.

2. The steel bar binding and fixing device for construction according to claim 1, characterized in that: The electromagnetic pulling mechanism further comprises a conductive ring rotor (20) sleeved on the outer side of the rear portion of the main rod (1); a conductive wire of the electromagnet is introduced from the inner cavity of the main rod (1) and is electrically connected to an electrode of the conductive ring rotor (20); a conductive ring stator (21) is sleeved on the outer side of the conductive ring rotor (20); the electrode of the conductive ring stator (21) is connected to a switch (31) of a hand drill; when the switch (31) of the hand drill is pressed to energize the motor of the hand drill, the electromagnet is also energized at the same time.

3. The steel bar binding and fixing device for construction according to claim 2, characterized in that: Auxiliary rods (9) are symmetrically fixed on the left and right sides of the main rod (1), and support sleeves (10) are respectively fixed at the far ends of the auxiliary rods (9) on both sides, and the support sleeves (10) on both sides are respectively sleeved and fixed on the left and right ends of the fixed shaft (3).

4. The steel bar binding and fixing device for construction according to claim 1, characterized in that: An arc groove (16) is provided on the inner side wall of the chuck (14), an arc clamping block (17) is sleeved in the arc groove (16), a clamping tooth is provided on the inner side surface of the arc clamping block (17), and the outer side surface is a circular arc surface, an arc dovetail groove is provided at the bottom of the arc groove (16), and an arc dovetail strip (18) is provided at the center of the arc surface of the arc clamping block (17), and the dovetail strip (18) is assembled in the dovetail groove.

5. The construction steel bar binding and fixing device according to claim 2, characterized in that: The electromagnet comprises a yoke (6) and an electromagnetic coil (7); the yoke (6) is I-shaped and has an annular groove in the middle thereof; the electromagnetic coil (7) is tightly wound in the annular groove; an inner end wing plate of the yoke (6) is fixed to a fixing seat (2); and an outer end wing plate of the yoke (6) is used to attract a suction cup (8) fixed at the inner end of the sliding sleeve (4).

6. The steel bar binding and fixing device for construction according to claim 2, characterized in that: A mounting seat (49) is fixed on the side of the hand drill, an auxiliary frame (25) is fixed on the front side of the mounting seat (49), two ferrules (27) are fixed on the front end of the auxiliary frame (25), and a connecting hole seat (22) is symmetrically fixed on the side wall of the conductive ring stator (21), and the two ferrules (27) and the two connecting hole seats (22) are respectively fixed together using a radial screw rod (28); a wire sleeve (26) is fixed on the inner side of the auxiliary frame (25), and a power cord is sleeved inside the wire sleeve (26); a plug joint (23) is arranged on the side wall of the conductive ring stator (21), the plug joint head (23) is connected to the electrode of the conductive ring stator (21), and the end of the power cord is plugged into the plug joint head (23).

7. The steel bar binding and fixing device for construction according to claim 1, characterized in that: The wire drawing and pulling mechanism further comprises a core rod (42), a wire drawing (44) is sleeved in the inner cavity of the main rod (1), a stopper (45) is fixed to the outer end of the wire drawing (44), a baffle (46) is fixed to the inner ends of the sliding sleeves (4) on both sides, the stopper (45) is supported on the outer ends of the baffle (46), an inner slider (43) is sleeved in the main rod (1), the inner end of the wire drawing (44) is fixed to the inner slider (43), the inner slider (43) is fixedly connected to the core rod (42), and the rear section of the core rod is connected to the pulling mechanism.

8. The steel bar binding and fixing device for construction according to claim 7, characterized in that: The traction mechanism comprises a fixed handle (38) and a movable handle (39). A fixed frame (37) is fixed on both sides of the rear end of the hand drill. The fixed handle (38) is transversely fixed to the rear end of the fixed frame (37). The movable handle (39) is located on the inner side of the fixed handle (38). The rear end of the core rod (42) is connected to the pull rod (40) via a rotating joint (41). The movable handle (39) is fixed to the rear end of the pull rod (40).

9. The construction steel bar binding and fixing device according to claim 7, characterized in that: The hand electric drill adopts a straight-through electric drill (33), and the motor in the straight-through electric drill (33) is a hollow shaft motor, and the core rod (42) is inserted into the hollow shaft of the motor.

10. The steel bar binding and fixing device for construction according to claim 7, characterized in that: A driving gear and a driven gear are arranged in meshing engagement in the housing of the hand drill. The two gears are respectively installed in a bearing seat in the housing of the hand drill through bearings. The motor shaft is connected to the driving gear. A through hole is arranged at the center of the driven gear. The core rod (42) is sleeved in the through hole of the driven gear.

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