JPH0676276U - Clamp device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a clamp device for lifting a bag, which has a simple structure, is versatile, and is inexpensive. A plate member 23 that comes into contact with the bag W is provided on the inner surface of one end 22a of the frame 22 having a substantially inverted U shape, and the frame 22
A handle member 24 is rotatably supported by a shaft 25 at the other end portion 22b of the above, and a clamp head 26 capable of contacting the plate member 23 is provided at the tip of the handle member 24.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a clamp device used when a bag is lifted by a crane or the like.

[0002]

[Prior art]

 Conventionally, when moving bags such as rice bags by using a crane, etc., the bags are placed on a table and lifted, a special bag that can be hooked by the crane is used to lift, or a vacuum is sucked using a suction cup. I am trying to lift it up.

Further, as disclosed in Japanese Patent Publication No. 2-59116, a plate-shaped object is inserted between a frame and a shackle, and the shackle is rotated toward the frame by the weight of the plate-shaped object itself, In some cases, a plate-like object is sandwiched between the body and the shackle.

[0004]

[Problems to be solved by the device]

 However, if the bag is placed on the table as in the conventional case described above, the work for placing the bag on the table must be performed, and if a dedicated bag is used, the cost is high and only that bag is used. However, it is not versatile, and the use of vacuum increases the equipment cost. Moreover, in the prior art in which the luggage is sandwiched between the frame and the shackle, the entire weight of the luggage is applied to the shackle when the shackle is removed, so the luggage must be lifted once.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a plate member for contacting a bag with an inner surface of one end of a substantially U-shaped frame, and a handle member rotatably pivotally supported on the other end of the frame. Then, a clamp head capable of contacting the plate member was provided at the tip of the handle member.

[0006]

[Action]

 Insert the edge (edge) of the bag between the plate member and the clamp head, and with the clamp head rotated downward, lift the frame to move the bag head downwards further to the clamp head due to the weight of the bag. A force is generated to clamp the end of the bag between the plate member and the clamp head. When removing the bag, the handle member is rotated.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a perspective view of an on-vehicle crane using the clamp device according to the present invention, FIG. 2 is a perspective view of the clamp device, and FIG. 3 is a side view of the clamp device.

An on-vehicle crane 4 is attached to a torii 3 provided on the loading platform 2 of the light truck 1. In this crane 4, a slide base 6 is slidably mounted on a guide rail 5 extending horizontally on a torii 3, and a ball screw 7 provided in parallel with the guide rail 5 meshes with the slide base 6 to form a ball screw. By rotating the handle 8 provided at one end of the ball screw 7 to rotate the ball screw 7, the slide base 6 moves left and right along the guide rail 5 (in the vehicle width direction).

A fixed support column 10 is erected on the slide base 6, and a rotating support column 13 is rotatably supported between brackets 11 and 12 provided at the upper and lower ends of the fixed support column 10. An arm 14 is swingably supported at an upper end portion thereof, and a power cylinder unit 15 is interposed between an intermediate portion of the support column 13 and a vicinity of a base end portion of the arm 14. A rope 16 having a base end fixed to the lower portion of the column 13 is hung on a pulley at the tip of the arm 14 and hangs downward, and a hook 17 is attached to the lower end of the rope 16.

Then, a clamp device 21 for clamping the bag W is hung on the hook 17 of the crane 4. The clamp device 21 is provided with an inverted L-shaped plate member 23 in contact with the bag W on the inner surface of one end 22a of a substantially inverted U-shaped frame 22 made of a plate material. A hole 22c for hooking the hook 17 is formed in the frame body 22.

A plate-shaped handle member 24 is rotatably supported by a shaft 25 on the other end portion 22b of the frame body 22, and a tip end portion of the handle member 24 is in a rod-like shape capable of contacting the plate member 23. The clamp head 26 of is fixed. The clamp head 26 is provided parallel to the plate member 23.

When suspending the bag W with the crane 4 using the clamp device 21 configured as described above, the end portion Wa of the bag W is attached to the plate of the clamp device 21 as shown by a phantom line in FIG. The clamp head 26 is inserted between the member 23 and the clamp head 26 while rotating upward together with the handle member 24 (the handle member 24 rotates in the arrow A direction).

In this state, the handle member 24 is rotated in the direction of arrow B so that the end portion Wa of the bag W is sandwiched between the plate member 23 and the clamp head 26. In this case, by providing a spring member that urges the handle member 24 to rotate in the direction of the arrow B, the clamp head 26 can bite the bag W better.

After that, with the hook 17 of the crane 4 hooked in the hole 22c of the frame 22, the crane 4 is operated to lift the clamp device 21, and the bag W is lowered by its own weight w. As a result, a force is generated to cause the clamp head 26 to rotate downward so that the clamp head 26 is pulled in due to the frictional force with the bag W (the handle member 24 further rotates in the arrow B direction).

As a result, the clamping force of the bag W by the plate member 23 and the clamp head 26 increases, and the end portion Wa of the bag W is clamped by the clamp device 21 by the weight of the bag W without supporting the handle member 24. Therefore, the bag W can be lifted.

In the clamp device 21, if the surfaces of the plate member 23 and the clamp head 26 are made of a material that easily generates frictional force or coated, the performance is further improved. Further, the plate member 23 is formed so as to project toward the clamp head 26 side from the hanging center line in a state where the plate member 23 is hung, so that the plate member 23 can be more reliably held.

[0017]

[Effect of device]

 As described above, according to the present invention, a plate member that comes into contact with a bag is provided on the inner surface of one end of a substantially U-shaped frame, and a handle member is rotatably attached to the other end of the frame. Since the clamp head that can contact the plate member is provided at the tip of the handle member, the structure is simple, versatile, and inexpensive. By using the clamp device of the present invention, it is possible to easily move by grasping the edge of the bag, and the force required to remove the bag is only to rotate the handle member, that is, the force to lift the bag. The size is smaller than the above, workability is improved, and the bag can be grasped and moved in units of one bag, which enables detailed work.

[Brief description of drawings]

FIG. 1 is a perspective view of a vehicle-mounted crane using a clamp device according to the present invention.

FIG. 2 is a perspective view of the clamp device.

FIG. 3 is a side view of the clamp device.

[Explanation of symbols]

4 ... Crane, 14 ... Arm, 16 ... Rope, 17 ... Hook, 21 ... Clamping device, 22 ... Frame, 23 ... Plate member, 24 ... Handle member, 26 ... Clamp head.

Claims (1)

[Scope of utility model registration request] 1. A clamp device used for lifting a bag, wherein the clamp device is provided with a plate member in contact with the bag on one inner surface of one end of a substantially inverted U-shaped frame, and the other end of the frame. A clamp device, wherein a handle member is rotatably supported, and a clamp head capable of contacting the plate member is provided at a tip of the handle member.