JP3023444U - Mounting device for turning the attachment - Google Patents

Abstract

(57) [Abstract] (Correction) [Problem] To rotate an attachment safely by operating a one-touch operation, and contribute to labor saving with various work functions. An attachment turning device includes an eccentric cam, a wire, a wire adjusting pin, and a U-shape for fixing and releasing a turning plate, a base plate, a turning seat bearing, and a connecting pin having two pins as a locking mechanism. The groove, the push button in the grip handle of the connecting pin, and the coil spring attached to the eccentric cam. During the turning operation, the push button is actuated to bend the coil spring by the tension of the wire 7, and the eccentric cam is moved to release the lock. Further, while the push button is still operating, the connecting pin is fully pulled up, and at the position where it is lowered a little, the stopper part of the connecting pin and the eccentric cam come into contact and stop descending. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mounting device for turning an attachment such as a bucket of a hydraulic shovel, and more particularly, to a mounting device for turning an attachment, which can easily, quickly and safely change a work function such as reversing an attachment by 180 degrees.

[0002]

[Prior art]

 Hydraulic shovels have become the mainstream of construction machinery because they can use a wide variety of attachments. However, since the basic attachment is a bucket, in recent years, as a device capable of labor-saving reversing work, a hydraulically driven device or a manual device by a bolt / nut tightening method has been proposed. . However, the hydraulic type is expensive, the manual type has a problem with the method of fixing the device that requires a strong tightening force, and the durability due to intrusion of water or mud.

[0003]

[Problems to be solved by the device]

 In the above manual reversing device, there were troubles such as breakage of bolts and inability to rotate. Therefore, the present invention uses pins for the fixing mechanism and swivel bearings with good sealing properties for the swivel mechanism, and 8 more works. The purpose is to provide a mounting device for turning an attachment that has a function at a low price.

[0004]

[Means for Solving the Problems]

 In particular, the bucket of a hydraulic excavator is subject to severe repeated loads and impact loads, so the structure of the device must be extremely simple and strong. Therefore, this device has adopted the swivel seat bearing in the swivel part, which has been used widely in various rotary attachments. The locking method uses a new locking mechanism that works in conjunction with the vertical operation of the two connecting pins to easily lock and unlock the device.

[0005]

[Operation] In the turning operation, the attachment can be swung easily by using the swivel seat bearing at the moment when the connecting pin comes out of the swivel disc. Fixing the device is a simple operation of inserting connecting fixing pins into two diagonal positions out of the eight holes formed in the swivel. To fix the connecting pins, install an eccentric cam on each and attach it. Since it is connected with a wire and the coil spring controls the movement of the eccentric cam, it is safe and can be operated with one touch.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to FIG. In the figure, reference numeral 1 is a conceptual view of a turning attachment device. The swivel disc of No. 2 has an attachment integrated with welding. There is a bracket on the base board of No. 3, which is connected to the machine body. Reference numeral 4 is a swivel seat bearing, which is the core of this device. There are two pin holes on the base board and eight holes on the swivel board so that the attachments can be attached in eight ways, and the five connecting pins connect the swivel plate and the base board. The eccentric cam of 6 is operated by the wire of 7 in conjunction with the vertical operation of the connecting pin of 5 so that the connecting pin of 5 can be locked and released safely and with one touch. The eccentric cam 6 has a pin 8 and a U-shaped groove 9 to adjust the wire tension of the wire 7 so that the connecting pin 5 can be pulled out from the base board. Press the button. In order to turn, first activate the push button 11 to disengage the eccentric cam 6 from the connecting pin 5 and pull up the connecting pin 5 fully, then lower the eccentric cam 6 a little. 7 wires and 12 coil springs work to create a locking mechanism. Next, after turning the attachment to the functional position, if the push pin of 11 is not operated and the connecting pin of 5 is pulled up a little, the eccentric cam of 6 is released from the locked state by the pulling force of the coil spring of 12 and the connection of 5 is connected. The pin can descend. The coil spring 12 is placed between both the eccentric cams 6 and restricts the movement thereof to prevent the connecting pin 5 from coming off.

[0007]

[Effect of device]

 At construction sites where the population is aging and manpower is short, it takes time, labor, and dangerous work such as flipping over the attachment, simply by moving the connecting pin up and down, the structure is simple and inexpensive, and maintenance is easy. Is. Furthermore, the effort for turning can be lightened by adopting a turning seat bearing.

[Brief description of drawings]

FIG. 1 is a conceptual explanatory view of an embodiment of the present invention, in which an attachment is fixed.

FIG. 2 is a detailed view of the swivel fixing mechanism in the conceptual explanatory view of the embodiment of the present invention.

3 is a sectional view taken along the line AA of FIG.

FIG. 4 is a view showing how the hydraulic shovel is attached to a bucket.

[Explanation of symbols]

 1. Mounting device for turning 2. Swivel 3. Base board 4. Swivel bearing 5. Connecting pin 6. Eccentric cam 7. Wire 8. Pin 9. U-shaped groove 10. Grip handle 11. Push button 12. coil spring

Claims (6)

[Scope of utility model registration request] 1. A device capable of performing eight different work functions by swinging an attachment, wherein a lower part has a swivel plate for fixing the attachment, and a base plate having an upper part and a bracket for connecting to an arm and a bucket link. An attachment device for swinging an attachment, which is swingable via a swivel seat bearing and has a locking mechanism as a fixing mechanism that is interlocked with vertical movement of a connecting pin. 2. The attachment device for swiveling an attachment according to claim 1, wherein the swivel bearing is also used for connecting upper and lower platforms such as a hydraulic excavator, or already used for various rotary attachments. 3. The turning mechanism and the base are such that the two pins having the upper portions connected and fixed are engaged with the two holes of the turning board in two holes on the diagonal of the eight holes opened in the base board. The attachment turning device according to claim 1, which fixes a board. 4. The attachment device for swinging an attachment according to claim 1, wherein an eccentric cam is provided on the pin at two locations as a mechanism for preventing the connecting pin from coming off, and is performed by one wire and one coil spring. 5. The attachment turning device according to claim 1, wherein the eccentric cam is provided with a wire adjusting pin and a U-shaped groove for ensuring an optimum stroke of the connecting pin. 6. An interlocking locking mechanism, wherein a push button provided on a grip handle of a connecting pin is used to move a coil spring connected to both eccentric cams to fix and release the connecting pin. Attachment device for turning an attachment according to item 4 or 5.