A steel bar bundling and fixing device for construction

Abstract

The present invention relates to the technical field of on-site construction tools for building materials, and particularly relates to a steel bar bundling and fixing device for buildings, which is composed of an electric drill and a clamping and rotating device. The clamping and rotating device includes a main rod, a fixed seat, a fixed shaft, a sliding sleeve, side clamps and a pulling mechanism. There is a fixed seat at the front end of the main rod, a fixed shaft in the center of the seat, and two sliding sleeves are sleeved outside the shaft. There is a pulling mechanism and a return spring between the sliding sleeve and the seat. The side clamps are composed of two driving handles. There are clamping heads at the distal ends of the handles and hinge holes at the proximal ends. There are hinge ears on the upper and lower sides of the sliding sleeve. The upper side ear is hinged to the upper side clamp, and the lower side ear is hinged to the lower side clamp. The pulling mechanism makes the sliding sleeve lean inward, driving the side clamps to contract. The rear end of the main rod is inserted into the locking device of the electric drill, and the rotation of the electric drill drives the clamping and rotating device to twist the two ends of the binding wire. This device is driven by an ordinary electric drill, without the need for a complex electric system and equipment, reducing the production and procurement costs and maintenance fees, enhancing the economy. The device is lightweight and easy to operate. Just press the switch of the electric drill, reducing the labor intensity of workers and improving the work efficiency.

Description

Technical Field

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

[0002] At present, the steel bar bundling and fixing devices for construction on the market mostly rely on traditional manual or electric bundling tools, which mainly connect and fix steel bars with binding wires through mechanical means. However, the existing steel bar bundling devices generally have the following problems: First, the structure of the bundling device is relatively complex, often requiring multiple components such as a binding wire roller, a propulsion motor, and a wire guiding groove, which results in a large volume, heavy weight, and inconvenient operation of the device; Second, since these devices usually need to carry complex components such as heavy binding wire rollers and propulsion motors, the equipment is not flexible enough during use and transportation, increasing the labor intensity; Third, the existing devices lack effective clamping and fixing of both ends of the binding wire, and usually need to wind the binding wire multiple times before bundling, resulting in waste of the binding wire; In addition, the durability of such devices is poor, they are easily damaged, and the cost of maintaining and replacing components is high.

[0003] In the prior art, a representative steel bar bundling device includes a steel bar bundling head with the publication number of CN116255014A. This device is equipped with a power drive motor and a wire feeding drive motor to perform different power controls for screwing and wire feeding respectively. The steel bar bundling head is powered by the main power supply on the robotic arm to ensure the independence and high efficiency of wire feeding and screwing. In addition, the device is also equipped with a binding wire roller, a propulsion motor, and a wire guiding groove to complete the steel bar bundling work. Although this technology makes the operation more precise by separating the control of screwing and wire feeding, there are still some significant problems. Complicated structure and easy to damage: The existing devices usually have complex binding wire rollers, propulsion motors, and wire guiding grooves, resulting in a bulky and less durable device with high maintenance costs. Inconvenient and inflexible operation: It is necessary to carry multiple components such as binding wire rollers and propulsion motors, which is inconvenient to operate and not flexible in transportation. Serious waste of binding wire: Due to the lack of a clamping device, both ends of the binding wire are not fixed, and it often needs to be wound multiple times to be fixed during bundling, resulting in a large amount of binding wire used and serious waste.

[0004] In the prior art, a small automatic steel bar bundling machine (CN220522023U) discloses the technical features for realizing the clamping and screwing of a clamping and rotating device, which includes a pistol drill, a bundling head, and binding wire. There are two symmetric diversion channels provided in the bundling head, and two locking channels are symmetrically provided between the stepped hole and the two diversion channels. During operation, only the two ends of the binding wire need to be roughly aligned with the diversion channels. However, the diversion channels in this bundling machine are closed perforated structures, resulting in difficulties in threading the wire. This bundling machine does not have a pulling mechanism and cannot realize the function of synchronously clamping both ends of the binding wire through the pulling mechanism. The wire cutter with a protective clip (CN101844335A) discloses that the wire cutter is equipped with a protective clip, which can prevent the binding wire from falling off, but this wire cutter cannot realize the functions of symmetric distribution and synchronous pulling.

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

[0006] Aiming at the defects and problems existing in the prior art, the present invention provides a steel bar bundling and fixing device for construction with a simple structure, light weight, low cost, and easy operation, aiming to improve the steel bar bundling efficiency, reduce the consumption of binding wire, be compatible with different types of electric hand drills at the same time, reduce the labor intensity of users, and optimize the bundling process.

[0007] The solution of the present invention to solve its technical problems is as follows: A steel bar bundling and fixing device for construction is adopted, which includes an electric hand drill and a clamping and rotating device. The clamping and rotating device includes a main rod, a fixed seat, a fixed shaft, a sliding sleeve, side pliers, 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 sleeved outside the fixed shaft, and 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 return spring is sleeved between the fixed seat and the sliding sleeve; The side pliers include two driving handles, the two driving handles are hinged together through a pin shaft, a clamping head is arranged at the inner side of the distal end of each driving handle, and a hinge hole is arranged at the proximal part of each driving handle; Symmetric hinge ears are respectively fixed on the upper side and the lower side of each sliding sleeve. A pair of hinge ears on the upper sides of the left and right sliding sleeves are hinged to the two hinge holes of the upper side pliers, and a pair of hinge ears on the lower sides of the left and right sliding sleeves are hinged to the two hinge holes of the lower side pliers; The pulling mechanism is used to move the sliding sleeves on the left and right sides closer inward, driving the upper side pliers and the lower side pliers to contract synchronously; The rear end of the main rod is inserted into the locking device of the electric hand drill. By controlling the rotation of the electric hand drill, the entire clamping and rotating device rotates, thereby driving the two ends of the pre-wound binding wire to be screwed. The pulling mechanism is an electromagnetic pulling mechanism or a wire-pulling pulling mechanism. The electromagnetic pulling mechanism includes electromagnetic bodies respectively fixed on the left and right sides of the fixed seat, and the left and right two sliding sleeves are pulled closer inward by the electromagnetic bodies; The wire-pulling pulling mechanism includes a wire installed in the fixed seat, and the left and right two sliding sleeves are pulled closer inward by driving the wire through a traction mechanism.

[0008] Preferably, the electromagnetic pulling mechanism further includes a conductive ring rotor sleeved on the outer side of the rear part of the main rod. The 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 outside the conductive ring rotor, and the electrode of the conductive ring stator is connected to the switch of the electric drill. When the switch of the electric drill is pressed to energize the motor of the electric drill, the electromagnet is also energized simultaneously.

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

[0010] Preferably, an arc-shaped groove is provided on the inner side wall of the chuck, an arc-shaped clamping block is sleeved in the arc-shaped groove, a clamping tooth is provided on the inner side surface of the arc-shaped clamping block, 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 bar is provided at the center of the arc surface of the arc-shaped clamping block. The dovetail bar is assembled in the dovetail groove.

[0011] Preferably, the electromagnet includes a magnetic yoke and an electromagnetic coil. The magnetic yoke is in an I shape, a ring groove is provided in the middle thereof, the electromagnetic coil is densely wound in the ring groove, the inner end wing plate of the magnetic yoke is fixed to the fixed seat, and the outer end wing plate of the magnetic yoke is used to attract the suction cup fixed to the inner end of the sliding sleeve.

[0012] Preferably, a mounting seat is fixed on the side of the electric drill, an auxiliary frame is fixed on the front side of the mounting seat, two card sleeves are fixed at the front end of the auxiliary frame, and at the same time, connection hole seats are symmetrically fixed on the side wall of the conductive ring stator. A radial screw rod is used to fix the two card sleeves and the two connection hole seats together respectively; a wire sleeve is fixed on the inner side of the auxiliary frame, and a power cord is sleeved in the wire sleeve; an insertion joint head is provided on the side wall of the conductive ring stator, the insertion joint head is connected to the stator electrode, and the end of the power cord is plugged into the insertion joint head.

[0013] Preferably, the wire drawing and pulling mechanism further includes a core rod. A wire drawing is sleeved in the inner cavity of the main rod, a stop block is fixed at the outer end of the wire drawing, baffles are fixed at the inner ends of the two sliding sleeves, the stop block supports at the outer end of the baffle, an inner slider is sleeved in the main rod, the inner end of the wire drawing is fixed to the inner slider, the inner slider is fixedly connected to the core rod, and the rear section of the core rod is connected to a 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 drill, a fixed handle is horizontally fixed at the rear end of the fixed frame, the movable handle is located inside the fixed handle, the rear end of the core rod is connected to a pull rod through a rotary joint, and the rear end of the pull rod is fixed to the movable handle.

[0015] Preferably, the electric drill adopts a through-type electric drill, and the motor in the through-type electric drill is a hollow shaft motor, and the core rod is penetrated through the hollow shaft of the motor.

[0016] Preferably, a driving gear and a driven gear are meshed inside the electric drill housing. The two gears are respectively installed in the bearing seats inside the electric drill housing through bearings. The motor rotating shaft is connected to the driving gear, and a through hole is arranged at the center of the driven gear. The core rod is sleeved in the through hole of the driven gear.

[0017] Based on the above solution, the steel bar bundling and fixing device for construction has the following beneficial effects:

[0018] 1. Simplified structure and low cost: By using an electric drill as the driving tool, complex electric systems and additional equipment are eliminated, reducing the production and procurement costs of the equipment. At the same time, the maintenance cost is reduced, improving the economy.

[0019] 2. Lightweight design and convenient use: The device is designed to be lightweight. The user only needs to press the switch of the electric drill to start the clamping and rotating device, simplifying the operation process, reducing the manual labor intensity, and improving the work efficiency.

[0020] 3. Saving wire ties: Through a unique clamping design, the two ends of the wire tie are effectively clamped first and then rotated and bundled, so there is no need to worry about the problem of wire slipping, reducing the amount of wire ties used and avoiding waste.

[0021] 4. High-efficiency clamping and automatic adaptation: The V-shaped design of the side pliers and the automatic rotation of the arc-shaped clamping block can ensure the stable clamping of wire ties of different shapes or multiple strands, avoiding the problem that traditional clamps cannot adapt to the shape of wire ties, and improving the clamping stability and accuracy.

[0022] 5. Strong compatibility and multiple drill options: It 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 modifying the electric drill are low, making it more flexible and adaptable. Description of the Drawings

[0023] Figure 1 is a schematic three-dimensional structure diagram of the steel bar bundling and fixing device in Embodiment 1 of the present invention;

[0024] Figure 2 is Figure 1 a schematic three-dimensional structure diagram of the clamping and rotating device in

[0025] Figure 3 is Figure 2 a schematic diagram of the assembly relationship of the clamping and rotating device;

[0026] Figure 4 is the front view of the clamping and rotating device;

[0027] Figure 5 is a schematic diagram of the comparison between the clamping and resetting of the clamping and rotating device;

[0028] Figure 6 is a schematic front structure diagram of the steel bar bundling and fixing device in Embodiment 2;

[0029] Figure 7 is Figure 6 Schematic diagram of the partial enlarged structure of the middle clamping rotator;

[0030] Figure 8 is the three-dimensional structure schematic diagram of another steel bar bundling and fixing device;

[0031] Figure 9 is Figure 6 Schematic diagram of the structure of the straight-through electric drill in the middle.

[0032] Reference numerals in the figure: main rod 1; fixed seat 2; fixed shaft 3; sliding sleeve 4; hinge 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 shaft 15; arc groove 16; arc-shaped clamping block 17; dovetail bar 18; hinge hole 19; conductive ring rotor 20; conductive ring stator 21; connecting hole seat 22; insertion joint 23; rotating insertion rod 24; auxiliary frame 25; wire sleeve 26; clamping sleeve 27; radial lead screw 28; hand-held electric drill 29; locking device 30; switch 31; pre-wound binding wire 32; straight-through electric drill 33; rear end plate 34; end plate fixing wire 35; side strengthening seat 36; fixing frame 37; fixed handle 38; movable handle 39; pull rod 40; rotary joint 41; core rod 42; inner slider 43; wire drawing 44; stop block 45; baffle plate 46; guide wheel 47; return spring 48; mounting seat 49. Specific embodiments

[0033] The present invention will be further described below in conjunction with the drawings and embodiments. The steel bar bundling and fixing device for construction has the following characteristics: (1) simple structure, durable and not easily damaged, with very low procurement cost and maintenance cost. (2) Lightweight, without carrying heavy binding wire rollers and additional propulsion motors and other structures. (3) Convenient to use, only need to press the switch 31 of the electric drill, and the clamping and screwing of the clamping rotator can be realized. (4) After the two ends of the binding wire are clamped, turn the knob, saving the usage amount of the binding wire. The device mainly includes an electric drill and a clamping rotator. The electric drill can be either a hand-held electric drill 29 or a straight-through electric drill 33. In the following Embodiment 1, a hand-held electric drill 29 is used, and almost no major modification is required for the electric drill. Just lead out the power cord from the switch of any electric drill and wear a plug. 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 fixed handle assembly structure can be fixed at the rear end of the straight-through electric drill 33 for use; or a special straight-through electric drill 33 is used, as Figure 8 shown, only the straight-through electric drill 33 needs to have a rotating function.

[0034] Embodiment 1: A fixing device for bundling steel bars used in construction, including a hand-held electric drill 29 and a clamping and rotating device. The assembly relationship between the clamping and rotating device and the hand-held electric drill 29 is as shown in Figure 1 shown. As shown in Figure 2 and Figure 3 shown, the clamping and rotating device mainly includes a main rod 1, a fixed seat 2, a fixed shaft 3, a sliding sleeve 4, a pair of side clamps, a pulling mechanism, etc. A fixed seat 2 is fixed at the front end of the main rod 1, and a fixed shaft 3 is horizontally fixed at the center of the fixed seat 2. There are two sliding sleeves 4 on the left and right sides of the fixed seat 2, and the two sliding sleeves 4 are respectively sleeved outside the fixed shaft 3, and the two sliding sleeves 4 on the left and right can slide axially along the fixed shaft 3 respectively. A pulling mechanism is arranged between each sliding sleeve 4 and the fixed seat 2. To keep the two sliding sleeves 4 on the left and right sides able to automatically reset outwards, a return spring 48 is sleeved between the fixed seat 2 and the sliding sleeve 4.

[0035] As shown in Figure 3 and Figure 4 shown, each side clamp includes two driving handles 13, and each driving handle 13 is V-shaped to achieve the best clamping fit angle. The middle parts of the two driving handles 13 are hinged together by a pin shaft 15. A clamping head 14 is arranged inside the distal end of each driving handle 13, and a hinge hole 19 is arranged at the proximal part of each driving handle 13. Symmetric hinge ears 5 are respectively fixed on the upper side and the lower side of each sliding sleeve 4. A pair of hinge ears 5 on the upper sides of the two sliding sleeves 4 on the left and right 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 two sliding sleeves 4 on the left and right are hinged to the two hinge holes 19 of the lower side clamp, as shown in Figure 4 shown.

[0036] By controlling the pulling mechanism, when the two sliding sleeves 4 on the left and right sides are moved closer inward, it can drive the upper side clamp and the lower side clamp to contract synchronously, and clamp the two ends of the pre-wound binding wire 32.

[0037] Since the binding wire is usually bent into two or more strands, to ensure that all strands of the multi-strand binding wire can be clamped inside a pair of clamping heads 14, an arc-shaped groove 16 is arranged on the inner side wall of the clamping head 14, and an arc-shaped clamping block 17 is sleeved in the arc-shaped groove 16. The inner side of the arc-shaped clamping block 17 is provided with teeth, and the outer side is an arc surface. An arc-shaped dovetail bar 18 is arranged at the bottom of the arc-shaped groove 16, and an arc-shaped dovetail bar 18 is arranged at the center of the arc surface of the arc-shaped clamping block 17. The dovetail bar 18 is assembled in the dovetail groove and can rotate freely. No matter at any position inside the two arc-shaped clamping blocks 17 on both sides, the arc-shaped clamping block 17 can automatically rotate to clamp each strand of the binding wire.

[0038] 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.

[0039] The pulling mechanism is an electromagnetic pulling mechanism or a wire drawing pulling mechanism.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] At the ends (i.e., the distal ends) of the two side auxiliary rods 9 away from the main rod 1, support sleeves 10 are respectively fixed. The two support sleeves 10 are respectively sleeved on the left and right ends of the fixed shaft 3. An end lock nut 11 is sleeved on the end of the fixed shaft 3 to prevent the support sleeve 10 from slipping off the fixed shaft 3.

[0045] When this embodiment is in use, with the left hand, pass the U-shaped binding wire through the cross point of the steel bars, and then press the two ends of the binding wire into the two pairs of clamping heads 14 of the clamping rotator. Then, press the switch of the hand-held electric drill 29 with the right hand. Specifically, the usage steps of 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 clamping rotator into the locking device 30 of the electric drill to ensure a firm connection between the clamping rotator and the electric drill, and fix the connection between the inserted rotary rod 24 and the electric drill. When in use, pass the binding wire through the cross point of the steel bars to ensure that both ends of the binding wire can contact the clamping rotator. Press the switch 31 of the electric drill with the right hand to start the electric drill and drive the clamping rotator. After the electric drill starts, the clamping rotator rotates accordingly. Driven by the motor, the two ends of the pre-wound binding wire 32 are screwed. Among them, the clamping heads 14 will automatically clamp the binding wire to ensure that the two ends of the binding wire are firmly wound around the steel bars to complete the bundling action. During the bundling process, the electric drill will continuously rotate the clamping rotator, and the binding wire will gradually tighten under the clamping of the clamping heads. After the bundling is completed, release the switch of the electric drill to stop the motor from rotating. Easily disassemble the clamping rotator, disconnect it from the electric drill, and perform the next operation or cleaning and maintenance.

[0046] The steel bar bundling can be completed through simple operations. The design of the device greatly reduces the labor input and time cost. During the use process, the consumption of the binding wire is effectively controlled. Usually, it is only necessary to fold the binding wire in half and bend it into a U shape to avoid waste. At the same time, the bundling effect is tight and reliable, improving the work efficiency and quality.

[0047] Embodiment 2: Another steel bar bundling and fixing device for construction. The pulling mechanism is different from that of Embodiment 1. In this embodiment, a wire drawing and pulling mechanism is adopted. As Figures 6 - 9 shown, a guide wheel 47 is installed in the inner cavity of the fixed seat 2 through a fixed shaft 3. At the same time, baffles 46 are fixed at the inner ends of the two sliding sleeves 4. A wire drawing 44 is sleeved in the inner cavity of the main rod 1. A stop block 45 is fixed at the outer end of the wire drawing 44. The stop block 45 is supported at the outer end of the baffle 46. The wire drawing 44 is introduced into the inner cavity of the fixed seat 2 through the side hole of the fixed seat 2 and is located in the groove of the guide wheel 47. An inner slider 43 is sleeved in the main rod 1. A key and keyway assembly structure is provided between the inner slider 43 and the inner wall of the main rod 1 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.

[0048] After the rear end of the main rod 1 is inserted into and fixed in the lock 30 of the electric drill, 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, fixed frames 37 are fixed to both sides of the rear end of the electric drill, and a fixed handle 38 is horizontally fixed to the rear end of the fixed frame 37. The movable handle 39 is located inside the fixed handle 38. During operation, hold the fixed handle 38 and the movable handle 39 with 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 can be pulled inward to realize the contraction and 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 electric drill, the core rod 42 is sleeved in the guide sleeve, a guide piece is fixed to the outside of the core rod 42, a guide ring is fixed in the guide sleeve, and 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 outside of the core rod 42 contacts the guide ring on the inner wall of the guide sleeve, and the electric drill motor can be powered on). When the movable handle 39 approaches the fixed handle 38 backward, the upper and lower side clamps contract synchronously to clamp both ends of the pre-wound binding wire 32. At the same time, the electric drill rotates to make the whole clamping and rotating device rotate, and then drives the two ends of the pre-wound binding wire 32 to be screwed.

[0049] In this embodiment of the electric drill, a through-type electric drill 33 is preferably used, and the motor in the through-type electric drill 33 is a hollow shaft motor. At this time, the core rod 42 can be passed through the hollow shaft of the motor, and the structure is simple and reliable. For example Figure 8 As shown, a rear end plate 34 is fixed to the rear end of the through-type electric drill 33. The periphery of the rear end plate 34 is fixedly connected to the main body of the through-type electric drill 33 through end plate fixing wires 35. Among them, a through assembly hole is arranged in the middle of the rear end plate 34. After replacing the ordinary motor 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. Also, side strengthening seats 36 are respectively fixed to the upper and lower side walls at the rear end of the main body of the through-type electric drill 33 for fixing the fixed frames 37.

[0050] In this embodiment of the electric drill, a double gear assembly (the driving gear and the driven gear are meshed, and the two gears are respectively installed in the bearing seats in the electric drill housing through bearings) can also be used. The motor rotating shaft is connected to the driving gear, and a through hole is arranged in the center of the driven gear. The core rod 42 is sleeved in the through hole of the driven gear.

[0051] The usage steps of the steel bar bundling and fixing device in this embodiment are as follows. Connect the electric drill. Fix the lock 30 of the straight-through electric drill to the rear end of the main rod 1 of the clamping rotator to ensure a firm connection. After passing the binding wire through the intersection of the steel bars, put both ends of the binding wire into the two pairs of chucks 14 of the clamping rotator. Manually pull the movable handle 39 backward. Drive the wire drawing 44 through the core rod 42, and pull the two side sliding sleeves 4 inward. This action causes the upper and lower side pliers to contract synchronously, effectively clamping both ends of the binding wire to ensure that the binding wire is firmly fixed. During this process, the motor starts simultaneously, driving the clamping rotator to start rotating. The two ends of the binding wire continue to be screwed under the clamping of the chucks. The motor drives the straight-through electric drill to rotate, and the clamping rotator makes the binding wire wind and tighten during the rotation process. During the bundling process, the electric drill and the clamping rotator work together to ensure that the binding wire does not loosen. The design of the chucks ensures that the binding wire can automatically adapt and clamp when wound in multiple strands, avoiding the phenomenon of uneven clamping. After the bundling is completed, release the switch of the electric drill, stop the motor from rotating, easily disassemble the clamping rotator, disconnect it from the electric drill, and prepare for the next bundling work.

[0052] The design of the wire drawing pulling mechanism in this embodiment makes the clamping action more stable and precise, ensuring that the binding wire is firm and does not loosen during the bundling process, and improving the bundling quality. The application of the straight-through electric drill simplifies the structure. At the same time, through the operation of driving the wire drawing by the core rod, the work efficiency is improved and the operation complexity is reduced. This device further improves the degree of automation through electrical control and precise clamping, reduces the human operation error, and makes the entire bundling process more reliable and efficient.

[0053] The above specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. Finally, the following points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or the internal communication of two components. It can be directly connected. "Upper", "lower", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the described object changes, the relative position 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.

Images