JPH0620778U - Nip dismantling device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a sandwiching and disassembling device which is low in manufacturing cost, light in weight, and excellent in workability. A sandwiching and disassembling device 10 attached to a tip of an arm 11 of an excavator, in which a base end portion is rotatably attached to a tip portion of the arm 11, an upper pawl 12 and a lower pawl 13, and the upper pawl. One end is rotatably fixed to an upper lever 14 provided in the middle of the upper part of 12, and the other end is rotatably mounted with a tip end portion of a hydraulic cylinder 33 whose base end is attached to the arm 11. Pressing member 15 and an intermediate arm 16 having one end rotatably connected to the other end of the pressing member 15 and the other end rotatably connected to an intermediate part of the arm 11.
And a lower lever 17 provided in the middle of the lower claw 13
One end thereof is rotatably connected, and the other end thereof has a link member 18 rotatably connected to the pressing member 15 or the intermediate arm 16.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a clamping and disassembling device that is used by being attached to the tip of an arm of an excavator such as a backhoe and a power shovel.

[0002]

[Prior art]

 A conventional sandwiching and disassembling apparatus 60 is shown in FIG. 3, in which a bracket 62 is attached to an arm 61 of an excavating machine such as a backhoe or a power shovel, the bracket 62 is rotated, and the upper claw connected by a link mechanism or the like. 63 and a lower claw 64 are attached, one end of a pressing member 65 is attached to the upper claw 63, and the other end of the pressing member 65 is driven via an intermediate arm 67 and a hydraulic cylinder 68 to drive the upper claw 63 and the lower claw 64. Was opening and closing.

[0003]

[Problems to be solved by the device]

 However, in the holding and disassembling device 60, since the bracket 62 for holding the arm 61 is used, there is a problem that the whole weight becomes heavy, the workability becomes poor, and the cost becomes high as a whole. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a sandwiching and disassembling device which is low in manufacturing cost, lightweight, and good in workability.

[0004]

[Means for Solving the Problems]

 The sandwiching and disassembling apparatus according to claim 1, which is in accordance with the above object, is a sandwiching and disassembling apparatus that is attached to a tip of an arm of an excavator, and has a base end portion which is rotatably mounted on a tip portion of the arm and One end is rotatably fixed to a lower claw and an upper lever provided in the upper middle of the upper claw, and the other end is rotatably the tip part of a hydraulic cylinder whose base end is attached to the arm. Of the lower claw, a pressing member mounted on the lower arm, an intermediate arm whose one end is rotatably connected to the other end of the pressing member, and the other end is rotatably connected to an intermediate part of the arm. One end is rotatably connected to a lower lever provided in the intermediate portion, and the other end is provided with a link member rotatably connected to the pressing member or the intermediate arm.

[0005]

[Action]

 In the sandwiching and disassembling apparatus according to claim 1, an upper claw and a lower claw are rotatably provided at a tip portion of an arm, and the upper claw is pushed and retracted by a pushing member to push the lower claw through a link member. Since the member is rotated by advancing and retracting the member or rotating the intermediate arm, the upper and lower pawls are opened and closed by expanding and contracting the hydraulic cylinder having one end attached to the arm. Therefore, a mounting bracket or the like is unnecessary.

[0006]

【Example】

 Next, an embodiment of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. 1 is a side view of a holding and disassembling apparatus according to an embodiment of the present invention, and FIG. 2 is a plan view thereof. As shown in FIGS. 1 and 2, a clamping and disassembling apparatus 10 according to an embodiment of the present invention is entirely made of a steel structure and is rotatably mounted on a tip portion of an arm 11 of an excavator. The claw 12 and the lower claw 13, and a pressing member 15 having one end rotatably fixed to an upper lever 14 provided on the upper claw 12, and one end of which rotates to the other end of the pressing member 15. One end of the middle arm 16 which is freely connected and the other end of which is rotatably connected to the intermediate part of the arm, and one end of which is connected to two pairs of lower levers 17 provided on the lower claw 13. And a pair of link members 18 rotatably connected to the pressing member 15 at the other end. These will be described in detail below.

The upper claw 12 includes two claws 19 and 20, a connecting member 21 connecting the claws 19 and 20 at a base end thereof, and mounting plates 22 and 23 provided on both sides of the connecting member 21, A pin 24 inserted into the tip hole of the arm 11 is fitted into the mounting plates 22 and 23, which has a pair of upper levers 14 provided on the upper portion of the connecting member 21. 2 is rotatably fixed to the tip of the arm 11. Further, the lower claw 13 includes three claws 25 to 27, a connecting member 28 connecting them, mounting plates 29 and 30 provided on both sides of the connecting member 28, and a lower part of the connecting member 28. It has two pairs of lower levers 17 provided, the pin 24 is inserted therethrough, and the lower claw 13 is also rotatably connected to the tip of the arm 11.

One end of the pressing member 15 is connected to the paired upper lever 14 via a pin 31, and the other end is rotatably connected to a tip metal member 34 of a hydraulic cylinder 33 via a pin 32. Has been done. The pressing member 15 has one end rotatably connected to the intermediate portion of the arm 11 via a pin 35 and the other end of the intermediate arm 16 rotatably connected. The tip metal member 34 may be integrally fixed to the rod of the hydraulic cylinder 33. Further, projecting bearing portions 36 and 37 are provided in the middle portion of the pressing member 15, and one end of the link member 18 which makes a pair is rotatably connected to the bearing portions 36 and 37. The other end of the link member 18 is rotatably connected to the two pairs of lower levers 17 via pins 38.

Therefore, when the hydraulic cylinder 33 is contracted, the pressing member 15 retracts, so that the upper pawl 12 opens upward and the link member 18 is pulled together with it, so that the lower pawl 13 opens downward. When the hydraulic cylinder 33 is extended, the operation reverse to the above operation is performed and the upper claw 12 and the lower claw 13 are closed. In the sandwiching and disassembling apparatus 10 according to the present embodiment, since the intermediate arm 16 conventionally attached to the arm 11 can be used as it is, when excavator is replaced with the sandwiching and disassembling apparatus 10, two arms are removed. This can be done by removing and inserting the pins 24 and 32, which is extremely simple.

[0010]

[Effect of device]

 As is clear from the above description, the clamping and disassembling device according to claim 1 is not provided with a bracket at the tip of the arm of the excavator, so the weight of the entire device is reduced, and thus the inexpensive work is performed. A sandwiching and disassembling device having good properties can be provided. Further, since the holding and disassembling device can be attached by using the hole which is conventionally formed for attaching the power shovel to the arm, the attachment can be facilitated. Further, since the holding and disassembling device can be attached regardless of the pitch of the holes attached to the arm, it is versatile.

[Brief description of drawings]

FIG. 1 is a side view of a holding and disassembling apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of a holding and disassembling device according to a conventional example.

[Explanation of symbols]

 10 Clamping / disassembling device 11 Arm 12 Upper claw 13 Lower claw 14 Upper lever 15 Pushing member 16 Intermediate arm 17 Lower lever 18 Link member 19 Claw 20 Claw 21 Connecting member 22 Mounting plate 23 Mounting plate 24 Pin 25 Claw 26 Claw 27 Claw 28 Connecting Member 29 Mounting plate 30 Mounting plate 31 Pin 32 pin 33 Hydraulic cylinder 34 Tip hardware 35 pin 36 Bearing part 37 Bearing part 38 pin

Claims (1)

[Scope of utility model registration request] 1. A gripping and disassembling device to be attached to a tip of an arm of an excavator, wherein an upper claw and a lower claw of which a base end is rotatably attached to a tip of the arm, and an upper middle part of the upper claw. One end is rotatably fixed to the upper lever provided on the
A pressing member on the other end of which a distal end portion of a hydraulic cylinder, the base end of which is attached to the arm, is rotatably mounted, and the other end portion of the pressing member has one end rotatably connected to the other end. Is rotatably connected to an intermediate part of the arm, and one end is rotatably connected to a lower lever provided at an intermediate part of the lower claw, and the other end is the pressing member or the intermediate part. A sandwiching and disassembling apparatus comprising a link member rotatably connected to an arm.