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Locking device for securing a backhoe attachment to a carrier lift arm

A lifting arm and locking position technology, which is applied to mechanically driven excavators/dredgers, earth movers/shovels, construction, etc., can solve the problem that the lifting arm cannot be operated and is used to lift backhoes or other tools, etc. question

Inactive Publication Date: 2011-06-15
CLARK EQUIP CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of U.S. Patent No. 5,004,398, the attachment is secured with an over-center latch, but the latch secures the backhoe mounting frame to the main frame of the carrier so that the lift arm cannot be operated for lifting the backhoe or other implement

Method used

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  • Locking device for securing a backhoe attachment to a carrier lift arm
  • Locking device for securing a backhoe attachment to a carrier lift arm
  • Locking device for securing a backhoe attachment to a carrier lift arm

Examples

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Embodiment Construction

[0017] The carrier vehicle, such as the shown compact loader 10, can be a skid steer loader, four wheel drive loader, or track loader, for example, having a frame 12 and a mechanism for moving the carrier vehicle (herein referred to as as the wheel 14 of the loader). The loader 10 has an operator cab 18 and an engine compartment 20 . Hydraulic lift cylinders 22 are used to raise and lower a pair of lift arms 24 relative to the main frame 12 in a known manner. The front end portion 26 of the lift arm has a front surface 28 with a pivot 30 at the lower end of the front portion 26 pivotally mounted with a conventionally designed attachment plate 32 which is pivotally mounted with a swing cylinder 34 The shaft 30 is inclined. Tilt cylinder 34 is a hydraulic cylinder that can be controlled by an operator to extend and retract a piston rod to tilt accessory plate 32 .

[0018] Hydraulic pendulum cylinders 34 are mounted to each lift arm (one on each side) with pins 36 mounted in ...

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PUM

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Abstract

A mounting frame (40) for attaching a backhoe (42) or other implement to a lift arm (24) of a vehicle, such as a compact loader (10), includes an upright arm (50) on the mounting frame (40) that is positioned ahead of and adjacent to a forward portion (26) of a lift arm (24) of the loader. The upright arm (50) carries a pivoting locking handle (54) at a first pivot (66) and a locking link (52) ispivotally supported on the locking handle (54) on a first pivot pin (58). The locking link (52) has a second pivot pin (59) that can be moved to be supported in an existing pin sleeve or bushing (38)on the lift arm (24). The pivot pins (58, 59) on the locking link (52) are positioned so that when the locking handle (54) is moved to a locked position, the line between the axes of the pivot pins (58, 59) on the locking link (52) goes over center with respect to the pivot axis of the first pivot (66) of the locking handle, and a hook end (60) of the locking link latches onto a locking projection (66) on the upright arm (50). The mounting frame (40) is held in a fixed position relative to the lift arm (24).

Description

technical field [0001] The present disclosure relates to a locking assembly for securing a backhoe or other implement attachment mounted on the front of a lift arm of an attachment carrier, such as a compact loader. Background technique [0002] Mounting devices for connecting implements, such as backhoes, to carrier vehicles are widely used. In many cases, the attached tool is supported by a suitable latch mechanism on an inclined accessory plate on the loader or carrier, and in many cases the accessory mounting frame has cross rails on which the tool is mounted so that the tool can Move from side to side relative to the longitudinal axis of the vehicle. [0003] It is necessary to ensure that the tool mounting frame is firmly supported on the carrier. US Patent No. 4,279,566 shows the same backhoe mounting arrangement as US Patent No. 5,004,398. In the case of US Patent No. 5,004,398, the attachment is secured with an over-center latch, but the latch secures the backhoe...

Claims

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Application Information

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IPC IPC(8): E02F3/627E02F3/36
CPCE02F3/3604E02F3/3695E02F3/3672E02F3/627E02F3/3668
Inventor 克里斯托夫·W·洛希德
Owner CLARK EQUIP CO INC