JP2519048Y2 - Clamping carrier for construction - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a sandwiching carrier for construction (hereinafter abbreviated as carrier), which is particularly suitable for use when carrying concrete products for road construction. Is.

(Prior Art) Conventionally, as a carrier of this type, a pair of arms are cross-bearing as shown in FIG. 6 and used in combination with a required one of a plurality of engagement holes continuous in the arm longitudinal direction. What is known is. The method of use is extremely simple. The gripping pieces (2) are positioned on both sides of the load (8), and then the handle (1) is usually lifted by two people so that the distance L1 between the gripping pieces is narrowed to lift the load. be able to.

(Problems to be solved by the invention) In the conventional technology, there is a problem that the holding object is insufficiently clamped and easily comes off due to the variation in the length of the transported object. In addition, for transporting / removing work, carry the transporter to the wearing position by yourself,
Although two people perform the clamping work, remove the transported object, and again the one person returns to the landing position, the opening angle of the arm supported by the bearing is not limited. There was a problem in that it moved and the work was troublesome. Also, due to the physique of the worker, especially the height difference and the difference in work posture, a linear handle is likely to cause uneven work load, and the work environment may be raised or lowered like transportation from a high position with a height difference to a low position. It also has the same problem when it requires transportation with a large difference. The present invention has been made in view of such problems of the conventional technology. The purpose of the present invention is to easily and securely hold a transported object by a simple operation, and to save labor during attachment / detachment work. The purpose of the present invention is to provide a construction carrier that reduces the work load during transportation.

(Means for Solving the Problems) In order to achieve the above object, a carrier according to the present invention comprises a pair of arms (3) each provided with a handle (1) upward at one end and a holding piece (2) downward at the other end. A screw feeding device (5) which is a cross-bearing carrier and positions the sandwiching pieces so that the distance L1 between the opposing sandwiching pieces can be adjusted via a guide (4) for moving the sandwiching pieces in the longitudinal direction of the arm. ) Is provided. Then, in order to prevent unnecessary movement of the sandwiching piece during the attachment / detachment work, the arm open angle restraining portion is provided for removing the transported object with the opening angle θ1 of the supported arm being at the maximum and returning to the wearing work position as it is. It is preferable to provide (6) and a handle (7) for movement. In addition, the shape of the handle (1) allows the worker to adjust the grip position of the handle up and down in order to facilitate the correction of the work load caused by the difference in the worker's height and the difference in work posture and the transportation with height difference. It is preferable to have a substantially annular shape that can be selected.

(Operation) The carrier is positioned so that both sides of the carrier are held by the sandwiching pieces. The distance between the clamping pieces is
It is adjusted by a screw feeder before work. Then, by pulling up the handle, the sandwiching piece reliably sandwiches the carried object, and when further raised, the carried object is lifted. Next, when the moving handle is pulled up, a force is exerted to open the holding piece connected to the arm to the outside so that the holding piece is separated from the object to be transported, and when the moving handle is further pulled up, the arm widens the opening angle and the arm opening angle. It comes into contact with the deterrent and is stopped.

(Embodiment) The present invention will be described below based on an embodiment.
FIG. 2 shows an example in which a screw feeding device for positioning the holding piece is provided. In this feeder, one end of a male screw (9) is cantilevered to a moving handle or arm, the male screw is passed through a cylindrical portion (10) of a guide, and both sides in the longitudinal direction are locked by female screws (11). . The moving handle (7) has one of the handle (1), arm (3), and
It is provided closer to the gripping piece of the arm than the center of gravity of the assembly of the gripping piece (2) and the screw feeding device (5). With this, the holding piece can always maintain the maximum length when holding the moving handle. Further, the moving handle is provided closer to the sandwiching piece side of the arm than the shaft center, and when the moving handle is pulled up, a force for opening the arm earlier than the other arm acts.
Further, as shown in FIG. 5, the moving handle is provided with a moving handle angle θ2 to prevent the shaking in the A direction, and the balance is corrected. The arm opening angle restraining portion (6) is located above the sandwiching piece and is configured as a part of the substantially annular handle (1), and when the handle moving distance L2 is L2 = 0, the arm opening angle θ1. Suppress. Further, the arm opening angle restraining portion can be provided in a protruding shape on the lower portion of the arm and the handle or on the upper portion of the holding piece. The handle has a substantially annular shape in which a straight line is partially arranged to make it easy for an operator to grip, and the cross section has a tubular shape in terms of weight reduction, workability, and cost.

(Effects of the Invention) Since the present invention is configured as described above, it has the following effects. In the carrier according to claim 1, since the distance between the sandwiching pieces facing each other can be adjusted by the screw feeding device, the sandwiching does not depend on the variation in the length of the transported object, and is unlikely to come off, which is reliable. . In the carrier according to claim 2, since the moving handle is provided on the side of the sandwiching piece with respect to the center of gravity, when the moving handle is pulled up, the handle side is lowered by its own weight and abuts on the arm opening angle restraining portion, and the sandwiching piece has the maximum length. Can be kept. As a result, the pinching piece does not move uselessly during the attachment / detachment work of the transported object. In the carrier according to the third aspect of the present invention, the handle can be selected in a timely manner by making the handle into a substantially annular shape. As a result, the work load caused by the difference in the height of the workers and the difference in the work posture is corrected. Further, it becomes possible to easily carry even a transportation having a height difference.

[Brief description of drawings]

FIG. 1 is a perspective view of a construction carrying device according to the present invention, and FIG.
FIG. 3 is a perspective view of a main part of the screw feeding device, FIG. 3 is a front view, and FIG.
The figure is a plan view and FIG. 5 is a side view. FIG. 6 is a front view showing a conventional example. 1 …… Handle 2 …… Clamping piece 3 …… Arm 4 …… Guidance 5 …… Screw feed device 6 …… Arm opening angle restraint unit 7 …… Movement handle 8 …… Transported goods 9 …… Male screw 10 …… Guide Cylindrical part 11 …… Female thread 12 …… Axis L1 …… Clamping piece distance L2 …… Handle movement distance θ1 …… Arm opening angle θ2 …… Movement handle angle

Claims (3)

(57) [Scope of utility model registration request] 1. A transporting tool comprising a pair of arms (3) provided with a handle (1) upward on one end and a gripping piece (2) facing down on the other end, and a pair of arms (3) moving in the longitudinal direction of the arm. A construction pinching carrier comprising a screw feeding device (5) for positioning the pinching pieces so that the distance L1 between the opposing pinching pieces can be adjusted via the guide (4). 2. The construction carrying device according to claim 1, further comprising an arm opening angle restraining portion (6) and a moving handle (7). 3. The construction pinching carrier according to claim 1 or 2, wherein the handle (1) has a substantially annular shape.