JP7007545B2 - Bundling device for binding wires that bind large rebar cages - Google Patents

Description

The present invention is a reinforcing bar cage used for a reinforced concrete structure, and in particular, a thick (diameter 25 to 50 mm) and long (6 m or more) main bar arranged inside a large diameter (800 to 3000 mm) Aron pile. It relates to a binding device for binding a special binding wire inserted at an intersection with a hoop muscle (diameter 13 to 25 mm).

For the knitting of this type of reinforcing bar cage, a binding device by the same inventor and a plurality of binding wires bound using the binding device are known. First, a first known example is a handle for tightening a binding wire, a rod to which the handle is attached to the top, and a binding wire attached to the lower end of the rod and inserted at the intersection of reinforcing bars. A winding member having a plurality of engagement holes through which the legs are inserted and engaged is in contact with a pair of legs of the inserted binding wire near the middle portion of the rod, and the thickness of the reinforcing bar and the length of the legs are abutted. A reinforcing bar having a stopper member whose position can be adjusted in response to the above and a load applying means for abutting the leg portion of the binding wire inserted into the engaging hole of the winding member to prevent the reinforcing bar from coming off. It is a binding device (Patent Document 1).

A handle is attached to the top of the rod, and a winding member having a plurality of engaging holes is attached to the lower end of the rod. Since it has a simple structure with a load applying means, it is lightweight and convenient to carry. Even if a reinforcing bar with a thickness of more than 20 to 30 mm and a corresponding binding wire with a diameter of more than 2.0 to 3.0 mm is used, the pair of legs of the binding wire are used in the engagement holes. The legs can be easily twisted by inserting and engaging and turning the handle, and even if the thickness of the reinforcing bar and the thickness and length of the binding wire change, adjust the stopper member accordingly and respond immediately. However, even if an inconvenience occurs during the twisting of the binding wire, the twisting can be corrected by the load applying means.

Further, in the second known example, a main body portion in which a handle and a hanging portion are formed in a substantially T shape, and a leg portion of a binding wire attached to a lower end portion of the main body portion and attached to an intersection of reinforcing bars are provided. It is composed of a holding member to be held, the holding member is composed of a fixed holding member and a movable holding member, the fixed holding member is attached to the lower end portion of the hanging portion, and the movable holding member is bearing on the hanging portion. It is a reinforcing bar binding device which is attached to the lower end portion of the arm member and is arranged so as to be openable and closable with respect to the fixed holding member by an operation member (Patent Document 2).

According to the binding device of this known example, the holding member is composed of a fixed holding member and a movable holding member, the fixed holding member is attached to the lower end portion of the hanging portion, and the movable holding member is a bearing on the hanging portion. Since it is attached to the lower end of the arm member and is arranged to be openable and closable with respect to the fixed holding member by the operating member, it is lightweight and convenient to carry, and in particular, the thickness of the reinforcing bar is 20 to 30 mm. Even if a binding wire with a diameter of more than 2.0 to 3.0 mm is used, if the pair of legs of the binding wire is sandwiched between the holding members and the handle is turned, the legs can be twisted. It can be easily twisted and tightened, and even if the thickness of the reinforcing bar and the thickness and length of the binding wire change, it can be handled efficiently and easily because it is only necessary to pinch and twist the legs. be.

Japanese Patent No. 5144377 Japanese Patent No. 5144435

By the way, in the binding device described in Patent Document 1, a work of inserting a pair of legs of a binding wire through a plurality of engaging holes provided in a winding member attached to a lower end portion of a rod is performed. It is difficult, and the winding member is provided with a load applying means. After inserting the pair of legs of the binding wire into the engagement hole, the load applying means is operated to prevent the binding wire from coming off, and then the handle is opened. The binding device is removed by grasping and rotating it, twisting and tightening the binding wire, and then loosening the load applying means and pulling out the binding wire from the engaging hole of the winding member. Other than that, it is troublesome, and since it is twisted by the force of the arm, it has a problem that it is quite tired due to the resistance applied when the leg is wound, it cannot be strongly wound, and the workability is poor.

Further, in the binding device described in Patent Document 2, a binding wire having no deformed portion is used in the leg portion, and when the leg portion of the binding wire is sandwiched between the fixed holding member and the movable holding member and twisted together. , In a pinched state, for example, when the binding device is tilted toward one leg, the leg on the non-tilted side is unilaterally pulled out because there is no catch on the leg of the binding line. As a result, both legs cannot be twisted evenly, which not only has a problem that the binding state is distorted and the strength is lowered, but also has a problem in manual winding workability.

The present invention solves the problem of manual winding work in the binding device according to the known technique, and provides an electric binding device capable of efficiently and quickly winding the binding wire in a stable state. It is the purpose.

The invention of the binding device according to the present invention is to bind a main bar and a hoop bar in a large wrench cage by using a binding wire obtained by molding a thick blunted wire having a diameter of about 2.5 to 5 mm into a mushroom shape. The main body of the binding device is an openable and closable holding member composed of a fixed holding member and a movable holding member for holding the legs of the binding line provided on the front end side, and the rear end side. It consists of a torque increasing mechanism of an impact wrench with a handle for rotationally driving the holding members provided in connection with each other, and is slidably provided by an operating lever for opening and closing the holding member and the operating lever. A ring member and a driven lever member whose base end portion is attached to the holding member via a shaft are provided, and the holding member holds the leg portion of the binding wire. An electric binding device characterized in that a position restricting material that maintains a closed state of the holding member is attached to a shaft of the driven lever member after the twisting operation until the operation of the operating lever is performed. Is to provide.

In the invention of the electric binding device according to the present invention, the main body portion is entirely covered with a cover, and the tip portion of the holding member, the handle portion, and the grip portion of the operating lever are covered with the cover. As an additional requirement, the fixed holding member and the movable holding member are provided with head portions; and a spring is provided between the head portions.

According to the electric binding device according to the present invention, the work efficiency is remarkably improved because it is lightweight and portable, the binding wire is sandwiched between the holding members, and the binding wire can be automatically bound by simply pressing the switch of the small motor. It has an excellent effect of forming stable binding.

It is a perspective view which showed the whole of the bundling apparatus which concerns on this invention. It is a perspective view which showed the structure of the main body part by removing the cover of the binding device. It is a schematic side view which showed the structure of the main body part by removing the cover of the binding device. It is a schematic side view which showed the operation situation by the operation lever with the cover of the binding device removed. It is a perspective view which showed the holding member in the binding device. It is explanatory drawing which schematically showed the closed state of the fixed holding part and the movable holding part of the holding member in the binding device. It is explanatory drawing which schematically showed the open state of the fixed holding part and the movable holding part of the holding member in the binding device. It is a perspective view which showed the situation which the binding wire is pinched by using the same binding device.

Next, the present invention will be described in detail based on the specific embodiments shown in the illustration. First, FIG. 1 is a perspective view showing the entire binding device. The main body portion 1 of the binding device is provided with handle portions 2 protruding from both sides, and the leg portions of the binding line are provided on the front end portion side. A pinching member 3 is provided, and an operation lever 4 for pinching and detaching the leg portion of the binding wire in the pinching member 3 is provided so as to project from the upper surface of the main body portion 1, and the pinching member 3 is rotationally driven. An impact pit 5 to which an impact wrench (not shown), which is a small electric motor (motor) for the like, is detachably connected is provided so as to project toward the rear end portion.

Further, the main body portion 1 is entirely covered with the covers 6a and 6b divided into two in consideration of handling safety, the tip portion of the holding member 3 is on the front end portion side, and the handle portion 2 is covered. Protruding to both side surfaces of 6a and 6b, the operating lever 4 projects the grip portion 4a to the outside from the opening 7 formed in the mating surface of the cover, and can be operated in the front-rear direction by holding the grip portion 4a. Further, a pair of locking members 10 to which hook portions 9 at both ends of the belt 8 having a required length can be locked are provided on the upper surface of the main body portion 1 so that the main body portion 1 can be hung from the neck and carried during use. It is mounted protruding. Since the impact wrench is attached to the rear end side of the main body 1, it may not always be necessary to cover it with a cover.

The structure of the main body 1 of the binding device will be described with reference to FIGS. 2 to 4 in which the covers 6a and 6b are removed and the structure of the main body 1 is shown. First, as shown in the figure, on the rear end side to which the impact wrench for driving the binding device is connected, two plates 11 and 12 having the same size and square shape as a whole are appropriately connected. It is formed in a box shape with a required interval in the front-rear direction, and a plurality of large and small gears are meshed and arranged between the plates 11 and 12 to form an impact wrench torque increasing mechanism 13.

In the torque increasing mechanism 13, a small-diameter gear 14 is attached to the shaft of the impact pit 5 inside the plate 11, and the large gear 15 of the first stage is arranged by meshing with the small-diameter gear 14. A small gear 16 is attached to the shaft of 15, a second-stage large gear 17 is arranged by meshing with the small gear 16, and a small gear 18 is attached to the shaft of the large gear 17. , The small gear 18 is meshed with the third-stage large gear 19, and the small gear 20 is attached to the shaft of the large gear 19, and the small gear 20 is meshed with the fourth-stage large gear 20. A large gear 21 is arranged, the shaft 22 of the large gear 21 is projected toward the front end portion of the torque increasing mechanism 13, and the holding member 3 is attached to the protruding shaft 22.

In this torque increasing mechanism 13, the rotation speed of the impact wrench is decelerated in four stages, for example, decelerated by 1/10 for each stage, so that the rotation speed of the holding member 3 attached to the front end side is reduced. Is 1/40 of the rotation speed of the impact wrench , but the output of that rotation, that is, the rotation torque, is 40 times. Further, a locking member 10 of the handle portion 2 and the belt 8 is attached to the torque increasing mechanism 13 formed in a box shape.

An operating lever 4 that contributes to opening and closing of the holding member 3 is provided on the front end side of the torque increasing mechanism 13, and the operating lever 4 is formed with a required length straight from the grip portion 4a. The tip side (base end side) is formed by being curved in a substantially semicircular shape, and the vicinity thereof is rotatably connected to the support plate 23 attached to the plate 12 by a pin joint 24, and further, the tip portion of the operation lever 4 is formed. A bar member 25 having a required length is formed so as to project horizontally in a direction crossing the sandwiching member 3.

Further, a pair of bar-shaped guide members 26 having a rail action are provided in parallel at the lower end portion on the front surface side of the plate 12, and the guide members 26 are supported in a chevron shape over the guide members 26 via slide grips 27, respectively. A member 28 is attached, a circular ring member 29 is attached to the top of the support member 28, and the base end portion of the driven lever member 31 having a pin 30 that abuts on the rear end portion side of the ring member 29 is the holding member. It is rotatably attached to the required points of 3. Therefore, the ring member 29 is slidably attached in the front-rear direction by the operation lever 4.

The circular ring member 29 is attached so as to be constantly moved to the tip end side of the guide member 26 by the coil spring 33 between the ring member 29 and the support column 32 provided in an upright state at the end portion of one guide member 26. It is being pushed. Further, the bar member 25 provided on the operation lever 4 is in contact with the support member 28, and as shown in FIG. 4, the ring member 29 is forcibly rearranged by pushing down the operation lever 4 toward the front end portion side. It is moved to the end side, whereby the holding member 3 is opened and closed. This opening / closing operation will be described later. Then, by releasing the hand from the operating lever 4, the support member 28, the ring member 29, and the operating lever 4 are returned to their original positions by the coil spring 33. However, the driven lever member 31 attached to the holding member 3 does not immediately return to its original position.

Therefore, the configuration of the sandwiching member 3 will be described with reference to FIGS. 5 to 7.
The sandwiching member 3 is arranged so that two substantially rectangular plates 34 and 35 are aligned at a required interval (gap), and the mounting member 36 of the shaft 22 is integrally provided on the rear end side and the front end side. By integrally providing (welding) the head portion 3a of the fixed sandwiching member, the space (gap) between the two plate members 34 and 35 is maintained, and as a result, the body portion of the fixed sandwiching member of the sandwiching member 3 is maintained. The body portion of the movable sandwiching member is rotatably arranged within the space (gap) in the body portion, and the head portion 3a of the fixed sandwiching member and the head portion 3b of the movable sandwiching member are combined ( It is arranged so that it can be opened and closed so that it can be combined) or separated (separated).

In this case, the base end portion of the driven lever member 31 rotates in one direction (leftward) by the bolt-shaped shaft 37 and the coil spring (not shown) wound around the bolt-shaped shaft 37 in the body portion of the holding member 3. In addition to being urged and attached in such a manner, an adjusting means 38 is attached for fine adjustment in the rotation of the movable sandwiching member arranged in the gap, and each head for inserting and sandwiching a pair of legs of the binding wire. Grooves 3c and 3d for sandwiching the legs of the binding wire are formed on the united surfaces of the portions 3a and 3b, respectively, and both head portions 3a and 3b are separated from each other at the substantially central portion of the united surface. A spring 39 is provided to force the spring 39, and a stopper portion 40 having a binding wire insertion length, that is, a stopper portion 40 with which the end of the leg abuts is formed, is cut and raised from the plate members 34 and 35 in the depths of the groove portions 3c and 3d. be.

As shown in FIGS. 6 and 7, the body portion 41 of the movable sandwiching member disposed in the gap in the body portion is curved in an arc shape from the position where the head portion 3b is attached, and is near the intermediate position. An arcuate recess 42, which is the center of rotation, is formed in the upper part of the plate, and the rear end portion 43 side is formed to be slender and flipped up to the upper surface position of the plate material 35, and is formed in a shape in front of the rear end portion. A convex portion 44 that regulates the position of opening and closing is formed on the edge portion. Then, an axial action plate 45 that contributes to opening and closing of the movable holding member is attached in the gap by the shaft 46, and the axial action plate 45 is fitted or engaged with the recess 42 on the arc to perform the axial action. An arc-shaped convex portion 47 (substantially becomes a shaft portion) is provided, and the body portion 41 of the movable sandwiching member moves in a shiso motion around the convex portion 47. The adjusting means 38 adjusts the state.

Further, in the gap in the body portion, the position restricting member 48 in the movable holding member is attached to the bolt-shaped shaft 37 of the driven lever member 31, and the tip thereof is formed so as to abut on the lower edge portion of the body portion 41. ing. The position restricting material 48 is designed to open and close the head portion 3b with the convex portion 44 of the body portion 41 as a boundary.

That is, when the position restricting material 48 is below the convex portion 44, the position restricting material 48 acts as a refilling rod (support rod) to maintain a closed state of both head portions 3a and 3b, and position restricting is performed. When the material 48 is located above the convex portion 44, both head portions 3a and 3b are maintained in an open state by the action of the spring 39 and the action of abutting on the side wall. In any case, in the closed state and the open state, the state is maintained unless the next operation is performed.

Therefore, the usage state of the binding device will be described with reference to FIGS. 8, 6, and 7.
In the initial stage of use, both head portions 3a and 3b are left open (FIG. 7), and as shown in FIG. 8, for example, they are inserted at the intersection of the main bar 50 and the hoop bar 51 in a large reinforcing bar cage. The spring 39 is pushed by inserting both leg portions 53 and 54 of the special binding wire 52 into the grooves 3c and 3d and pushing both head portions 3a and 3b so as to be pinched from above and below with, for example, the thumb and index finger. It can be crushed and easily closed.

Patent application In this case, as shown in FIG. 7, the body portion 41 of the movable sandwiching member rotates (seesaw motion) around the arcuate convex portion 47, and the slender rear end portion 43 moves upward. As a result, the driven lever member 31 urged in the returning direction returns to the original position, and as shown in FIG. 6, the position restricting material 48 is forcibly positioned below the convex portion 44. become. In this state, the body portion 41 of the movable pinching member is fixed by the action of the refill bar (support rod) by the position restricting member 48, and even if a strong external force trying to open between the head portions 3a and 3b acts, even if a strong external force acts. It never opens. Then, when the switch of the impact wrench is pressed for about 1 to 3 seconds in this state, the holding member 3 makes three or more rotations, so that both legs 53 and 54 of the binding wire 52 are twisted about three turns, and the binding wire 52 is twisted. Is settled in tension.

After that, by pushing down the operating lever 4 toward the front end portion, the tip end portion of the driven lever member 31 is rotated toward the rear end portion side by the ring member 29 as shown in FIG. 4, whereby FIG. 7 shows. As shown, since the position restricting material 48 rotates and is removed from the position of the refill bar, both head portions 3a and 3b are opened by the spring 39, and the legs 53 and 54 of the binding wire 52 are opened. be. In this way, the winding operation of the binding wire can be performed within 1 minute at the earliest and less than 2 minutes at the latest after getting used to it, so it can be performed with an efficiency of about 5 to 6 times that of the conventional manual tightening work. .. The operation lever 4 is operated for each winding operation to open the wound binding wire 52, and keeps the head portions 3a and 3b in the open state so that the next binding wire can be inserted. No matter where the pinching member 3 rotates and stops at any position within the range of 360 degrees, the driven lever member 31 is undoubtedly rotated to the rear end side by each winding operation . Yes, there are no operational mistakes.

As the numbered wire bound by the electric binding device according to the present invention, that is, the binding wire, a special binding wire manufactured by the "method for manufacturing the binding wire" of Patent Application No. 2016-90700 according to the same applicant is used. It will be done.

In the electric binding device according to the present invention, the main bar 50 and the hoop bar 51 in the large reinforcing bar cage are formed by using the binding wire 52 formed by molding a thick blunted wire having a diameter of about 2.5 to 5 mm into a mushroom shape. A binding device for binding, the main body 1 of the binding device can be opened and closed including a fixed holding member and a movable holding member for holding the legs 53 and 54 of the binding wire 52 provided on the front end side. The holding member 3 is composed of a torque increasing mechanism 13 of an impact wrench with a handle portion 2 for rotationally driving the holding member provided connected to the rear end portion side, and opens and closes the holding member 3. The operation lever 4 to be performed, the ring member 29 slidably provided by the operation lever 4, the pin 30 at the tip abuts on the ring member 29, and the base end portion is attached to the holding member 3 via the shaft 37. The driven lever member 31 is provided, and the legs 53 and 54 of the binding wire 52 are sandwiched between the sandwiching members 3 and twisted. The position restricting material 48 that maintains the open state and the closed state of 3 is attached to the shaft 37 of the driven lever member 31, is lightweight and portable, and the binding wire 52 is sandwiched between the holding members 3 to be compact. Since the bundling can be done automatically just by pressing the switch of the motor, the work efficiency is remarkably improved, and the stable bundling can be performed, so that it can be widely used not only for knitting a large rebar cage but also for constructing a reinforced concrete structure.

1 Main body of binding device 2 Handle 3 Holding member 3a Fixed holding member head 3b Movable holding member head 3c 3d Groove 4 Operating lever 4a Grip 5 Impact pit 6a, 6b Cover
7 Opening 8 Belt 9 Hook 10 Locking member 11, 12 Plate 13 Torque increase mechanism 14, 16, 18, 20 Small gear 15, 17, 19, 21 Large gear 22 Protruding shaft 23 Support plate 24 Pin joint 25 Bar member 26 Guide member 27 Slide grip 28 Support member 29 Ring member 30 Tip pin 31 Driven lever member 32 Strut 33 Coil spring 34, 35 Plate material 36 Mounting member 37, 46 Shaft 38 Adjusting means 39 Spring 40 Stopper part 41 Body part 42 Arc-shaped Concave part 43 Rear end part 44 Convex part 45 Axial action plate 47 Arc-shaped convex part 48 Position restricting material 50 Main bar 51 Hoop bar 52 Bundling line 53, 54 Leg

Claims (4)

It is a binding device for binding the main bar and hoop bar in a large reinforcing bar cage using a binding wire formed by molding a thick annealed wire having a diameter of about 2.5 to 5 mm into a mushroom shape.
The main body of the binding device is provided by being connected to the rear end side with an openable and closable holding member composed of a fixed holding member and a movable holding member that hold the legs of the binding wire provided on the front end side. It consists of a torque increasing mechanism of an impact wrench with a handle for rotationally driving the holding member.
An operating lever that opens and closes the pinching member, a ring member slidably provided by the operating lever, and a pin at the tip of the ring member are in contact with each other, and a base end portion is attached to the pinching member via a shaft. A driven lever member is provided,
A position restricting material that maintains the closed state of the holding member is attached to the shaft of the driven lever member until the operation lever is operated after the leg portion of the binding wire is held by the holding member and twisted. An electric bundling device characterized by being done. The whole body is covered with a cover, and the whole body is covered with a cover.
The electric binding device according to claim 1, wherein the tip portion of the holding member, the handle portion, and the grip portion of the operating lever are projected outward from the cover. The electric binding device according to claim 1, wherein a head portion is provided for each of the fixed holding member and the movable holding member. The electric binding device according to claim 3, wherein a spring is provided between the head portions.

Images