Attachment attitude control device

Abstract

To provide an attitude control device for an attachment arranged between a tip of a hydraulic shovel and the attachment to stabilize right and left tilting and rotating of the attachment.SOLUTION: Provided is an attitude control device for an attachment in which a tilting frame (10) is constituted by fixing, on an upper frame (12), a tilting frame bearing (3) supported on a body bearing (2) of a body frame (1) to be attached at a tip of a hydraulic shovel with a tilting pin (4) and by bolt-fastening a lower frame (13) to the upper frame (12) and a worm gear (11), and a hydraulic piping part for guiding hydraulic pressure from the body frame (1) to a hydraulic device in the tilting frame (10) is provided in the tilting pin (4) to adjust a gap between pins of the attachment through rotation of a pipe nut (22) opposite to a fastened hook (14) provided on the tilting frame and screwed on a screw rod (21) with a movable hook (15).SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] This invention relates to a hydraulic excavator and Work tools a Tap This relates to a posture control device for an attachment that is attached between the components. [Background technology]

[0002] Hydraulic excavator and Work tools a Tap The hydraulic hose (5) leading from the hydraulic excavator to the main frame (1) of the device is bent and stretched with the left and right tilting of the tilting frame (10) of the device, causing fatigue damage to the hose and protruding outside the device. For attachment work It can get in the way.

[0003] When attaching or detaching an attachment, if the adjustment of the pin spacing of the attachment using a movable hook facing a fixed hook is performed by rotating the nut or threaded rod that is screwed onto the threaded rod, the rotation can sometimes be difficult. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention provides an attachment attitude control device, Work tools attachment The attachment can be tilted left and right by approximately ±45°, rotated, etc. (The attachment can be moved forward and backward, up and down, etc. by the hydraulic excavator.) use Especially for stretching and bending hydraulic hoses. The object of the present invention is to provide an attachment attitude control device that solves the above-mentioned durability, stability, and convenience. [Means for solving the problem]

[0005] In this invention, the device is attached to the end of the arm of a hydraulic excavator, and a work access is attached to the device. TapThe attachment attitude control device is characterized in that the hydraulic pressure for operating the device is guided to a piping hole (8) provided in the tilting pin (4), and the hydraulic pressure for operating the attachment (43) provided at the bottom of the tilting frame (10) is guided from a rotary joint (16) provided in the center of a worm gear (11), and the tilting of a movable hook (15) that adjusts the distance between the attachment pins is performed by rotating a threaded rod (21) and a pipe nut (22) that covers the threaded rod.

[0006] According to the above configuration, the hose (5) that conducts hydraulic pressure from the main frame (1) attached to the tip of the arm of the hydraulic excavator to the tilting frame (10) is connected to the valve block (9) on the tilting frame (10) through the piping hole (8) provided in the tilting pin (4) by the swivel joints (6) and (7), so that the hose (5) can be fixedly piped without being stretched or twisted.

[0007] Furthermore, the hydraulic pressure for operating the attachment (43) attached to the lower end of the tilting frame (10) can be guided to the vicinity of the piping fittings of the attachment (43) through a rotary joint (16) installed at the center of the worm gear (11) of the tilting frame (10).

[0008] If a wiring hole is provided in the center of the rotary joint (16) and a slip ring (not shown) is provided at the lower end of the rotary joint (16), electricity can be supplied to the attachment (43).

[0009] Furthermore, when attaching various attachments (43), it is necessary to adjust the distance between the pins, and the tilt adjustment of the movable hook (15) facing the fixed hook (14) can be performed by rotating the pipe nut (22) that is threaded onto the threaded rod (21). The pipe nut (22) that covers the threaded rod (21) is journaled on the trunnion (26) by ball bearings (23) and (24), etc. The trunnion is journaled on the fixed hook side, one end of the threaded rod is journaled on the movable hook, and the pipe nut can be rotated with light power. [Brief explanation of the drawings]

[0009] [Figure 1] Installation diagram for the hydraulic excavator of this invention [Figure 2] Elevation view of the hydraulic excavator of the present invention [Figure 3] Side view of the invention [Figure 4] An oblique elevation view of the invention DETAILED DESCRIPTION OF THE INVENTION

[0010] Figure 1 shows the state in which this invention is attached to the arm (41) of a hydraulic excavator (40) and the attachment (43) is tilted 45 degrees. (1) is the main frame, (3) is the tilting frame bearing, (10) is the worm gear, and (28) is the tilting cylinder. FIG. 2 is an elevation view of FIG.

[0011] Figure 3 shows a side view of the present invention. (1) The (2)(2') bearings of the main frame (1) support the (3)(3') tilting frame bearings via the (4)(4') tilting pins. The (3)(3') tilting frame bearings are connected with bolts to a worm gear (11) fixed to the upper frame (10). The worm gear (11) is bolted to the lower frame (13). A fixed hook (14) and a movable hook (15) for attaching an attachment (43) are fixed to the lower frame (13).

[0011] Swivel joints (6), (6') and (7) are provided at the center of the tilting pins (4), (4'), and piping holes (8), (8') are provided at the center of the tilting pins (4), (4'), and these piping holes (8), (8') communicate with swivel joints (6), (6'), and hoses (5), (5') are connected to the swivel joints of (6), (6'), respectively.

[0012] The tilting frame bearings (3) and (3') are fixed to the upper frame (12), and the upper frame (12) and the lower frame (13) are bolted to the worm gear (11) to form the tilting frame (10). Even when the tilting frame (10) tilts, the length of the hoses (5) and (5') does not change, and they function like fixed piping.

[0013] The piping is fixedly connected to the valve block (9) from the piping holes (8) (8') in Figure 3, and the hydraulic pressure of the valve block (9) is guided to the attachment and connecting nozzles (17), (18), (19), etc. via the rotary joint (16) installed in the center of the worm gear (11).

[0014] The pipe nut (22) that screws into the threaded rod (21) journaled by a pin (20) on the tilting hook (15) in Figure 3 is supported by a trunnion (26) journaled on the fixed hook (14) side via bearings (23), (24), and (25), and the movable hook (15) is fitted into the pin of the attachment (43) and fixed by rotating the screw head (27) of the pipe nut (22).

[0015] Figure 4 shows the state in which the tilt bearing (3) and worm gear (11) are tilted 45° to the right due to the expansion and contraction of the cylinders (28) (28') journaled on the main frame (1), and the hose (5) is prevented from twisting by the swivel joint (6). [Explanation of symbols]

[0016] 1 Body frame 2 Body bearing 3. Tilting frame bearing 4 tilt pin 5 Hose 6 Swivel joint 7 Swivel joint 8 Plumbing holes 9 Valve Block 10 Tilting Frame 11 Worm gear 12 Upper frame 13 Lower frame 14 Fixed hook 15 Movable hook 16 Rotary joint 21 Threaded rod 22 Pipe Nut 23 Ball bearings 24 Ball bearing 25 bearings 26 Trunnion 28 cylinders 43 Attachment

Claims

1. This attachment attitude control device is configured to tilt and rotate the working tool attachment left and right, by connecting the main frame (1) to the tilting frame (10) with a tilting pin (4) between the tip of the hydraulic excavator and the working tool attachment, and further attaching a worm gear (11) to the tilting frame (10) which is tilted left and right by a hydraulic cylinder (28). The hydraulic pressure from the main frame (1) to the tilting frame (10) is guided to a piping hole (8) provided in the tilting pin (4).

2. 2. An attachment attitude control device as set forth in claim 1, characterized in that the hydraulic or electrical power for operating the attachment is led to the attachment (43) through a rotary joint (16) provided at the center of rotation of a worm gear (11) fixed to the tilting frame (10).

3. 2. An attachment attitude control device according to claim 1, characterized in that the positions of a fixed hook (14) to which an attachment is attached and a movable hook (15) facing it are adjusted by rotating a pipe nut (22) that threads onto a threaded rod (21), one end of the threaded rod (21) being journaled to the movable hook, and the pipe nut (22) being journaled to a trunnion (26) journaled on the fixed hook (14) side.

Images