KR19980074236A - Attachment detachment device of heavy equipment - Google Patents

Abstract

The present invention relates to an attachment or detachment device for heavy equipment, and more particularly, to an attachment or detachment device for heavy equipment, the first circular member being fixed to a bucket link and detachable from a hook formed on an upper side of a bucket, and the first circular member. The hydraulic cylinder is driven in a axial direction by connecting means to the second circular member which is connected by the fixing means on both sides and is mounted inside both of the buoy plate, and the hydraulic cylinder rod built into the second circular member. And a fixing pin detachable from the bucket and installed at both ends of the hydraulic cylinder to prevent the bucket from being detached by maintaining the coupling state of the fixing pin when the pressure of the hydraulic cylinder is lost. It provides an attachment detachment device of heavy equipment.

Description

Attachment detachment device of heavy equipment

The present invention relates to an attachment or detachment device for heavy equipment, and more particularly, it is possible to quickly attach and detach an attachment, such as a bucket, to a work device of a device having a function of excavating, loading and loading a work. An attachment attachment and detachment device for heavy equipment to prevent high loads and impacts generated from attachments in operation from being directly transmitted to hydraulic cylinders for attaching and detaching attachments (hereinafter, for example, referring to buckets).

Many related technologies have been disclosed for the QUICK COUPLER used when replacing a bucket or the like according to a work object. US Pat. Nos. 3883015 and 3876091 provide attachments to the main body of equipment such as tractors. Detachable device, which is connected to the attachment and the three points are designed to support the high cyclic load acting on the attachment during work, and involves the problem that the load stress is concentrated at the three support points, and thus the structure and configuration It causes the wear and deformation of the parts and has a problem that the attachment of the bucket or the like from the detachable device in the repeated operation.

In addition, US Patent No. 3243066 uses a hydraulic cylinder as a power source to remove attachments such as a bucket, and the force and vibration received by the pin portion connected to the bucket during operation are transmitted directly to the hydraulic cylinder, and the rod of the hydraulic cylinder is applied. Shear load acts, which causes the oil leakage due to breakage of the hydraulic cylinder during repetitive work.

In addition, US Patent No. 4963071 is a guide installed above the rear portion of the attachment to improve the detachable device and mounting, but the cost of mounting the attachment using the hydraulic cylinder in the lower part of the attachment due to the two cylinder configuration Since the attachment mounting pins connected to the hydraulic cylinders are inserted into the holes in the vertical direction, the shear load acts on the pins during operation, thereby causing vulnerability.

On the other hand, when attaching and detaching the attachment using manpower, the driver is separated from the driver's seat, work efficiency is reduced, and the attachment and detachment has a problem that requires a lot of assistants and forces in addition to the driver. On the contrary, when attaching or detaching an attachment using a hydraulic cylinder, a high load acting on the connection portion of the attachment and the detachable device is directly transmitted to the hydraulic cylinder to reduce durability.

Accordingly, an object of the present invention is to provide an attachment / detachment device for heavy equipment, which facilitates attachment and detachment of attachments such as buckets from the driver's seat, thereby improving workability.

Another object of the present invention is to provide an attachment detachment device for heavy equipment to prevent leakage and high durability of the hydraulic cylinder by blocking the direct transmission of high loads and shocks generated from the attachment during operation to the hydraulic cylinder for detaching the attachment. It is.

Another object of the present invention is to increase the safety of the equipment by removing the risk of falling of the attachment when the parts constituting the hydraulic circuit of the equipment, the attachment of heavy equipment to reduce the cost cost due to the simple configuration of the detachable device It is to provide a removable device.

1 is an excerpt of the main portion of the attachment and detachment device of the heavy equipment according to an embodiment of the present invention,

2 is a mounting state of the attachment and detachment device of the heavy equipment according to an embodiment of the present invention,

3 is a schematic view showing the mounting of the attachment by the present invention,

4 is a schematic view showing the separation of the attachment by the present invention,

5 is a schematic view for explaining the mounting of the attachment by the present invention,

Figure 6 is a rear view of the attachment connected to the detachable device of the present invention.

* Explanation of symbols used in the main part of the drawing

1: hook

2: first circular member

3: bucket link

4: coupling hole

5: second circular member

6, 7: pour plate

8, 11: fastening member

9: round member

10, 13: protrusions

12: plate

14: connecting member

15: entrance port

16: exit port

17: hydraulic cylinder

18: rod part

19, 25: through part

20: joining hole

21: push pin

22: connecting pin

23: first diameter part

24: coupling hole

28: circular member

29: elastic member

An object of the present invention described above, in the attachment or detachment apparatus of heavy equipment, the first circular member fixed to the bucket link to be attached to and detached from the hook portion formed on the upper side of the bucket, and connected by fixing means to both sides below the first circular member. And circumferentially connected to the second circular member mounted inside both side pour plates and the hydraulic cylinder rod installed in the second circular member by a connecting means, and detachable from the bucket when the hydraulic cylinder is driven. Attached to both ends of the hydraulic cylinder is attached to the attachment and detachment device of the heavy equipment characterized in that it is provided with a separation prevention means for preventing the separation of the bucket by maintaining the coupling state of the fixing pin when the pressure loss of the hydraulic cylinder By providing.

A preferred feature of the present invention, the connecting means, the clearance gap for the inner diameter difference of the through-hole formed in the rod portion corresponding to the connecting pin with respect to the outer diameter of the connecting pin for connecting the fixing pin to the hydraulic cylinder rod portion is It is formed larger than the gap for the inner diameter difference of the through-hole formed in the fixing pin corresponding to the connecting pin to the outer diameter of the connecting pin, the high load and impact acting on the fixed pin during operation, the hydraulic cylinder and the connection It is characterized in that it blocks the transmission directly to the pin.

According to a preferred feature of the invention, the connecting means, the gap between the inner diameter of the through hole formed in the rod portion corresponding to the connecting pin with respect to the outer diameter of the connecting pin, so as to correspond to the end of the rod portion and the rod It is formed smaller than the gap between the inner surface of the coupling hole formed in the fixing pin, it is characterized in that the high load and impact acting on the fixed pin during the operation is blocked directly transmitted to the hydraulic cylinder and the connecting pin.

According to a preferred feature of the present invention, the inlet and outlet port of the hydraulic cylinder is inserted into and fixed to a coupling hole formed at a predetermined position of the second circular member so as to restrain the rotation of the hydraulic cylinder and the fixing pin when the hydraulic cylinder is driven. Is formed.

A preferred feature of the present invention is characterized in that both ends of the second circular member are positioned in the same center line as the through-holes of the left and right boolean plates and are fixed inside the buoy by the fixing member fixed to the inner surface.

A preferred feature of the present invention, the one side of the coupling hole formed in the buoy plate to which the fixing pin is mounted is formed on the inner side of the buoy plate, so that the stationary pin is easily coupled to the coupling hole of the bucket plate serves as a guide A straightening member is provided.

A preferred feature of the present invention is characterized in that the first rotating member, one end of which is fixed to the bucket link, is rotatably mounted relative to the support member mounted between the second circular member and the pour plate.

A preferred feature of the invention, the fixing means, one end is rotatably fixed to the inner surface of the bucket link, the other end is configured to include a connecting member is rotatably fixed to the inner surface of the pour plate. .

Hereinafter, a preferred embodiment of the present invention will be described in detail according to the accompanying drawings.

1 is an extract of the main portion of the attachment and detachment device of the heavy equipment according to an embodiment of the present invention, Figure 2 is a mounting state diagram of the attachment and detachment device of heavy equipment according to an embodiment of the present invention, Figure 3 is by the present invention 4 is a schematic view showing the attachment of the attachment, Figure 4 is a schematic view showing the detachment of the attachment by the present invention, Figure 5 is a schematic diagram for explaining the attachment of the attachment by the present invention, Figure 6 is connected to the detachable device of the present invention It is attachment.

As shown in the figure, both ends of the first circular member 2 detachably attached to the hook portion 1 formed on the rear side of the bucket B is fixed to the through hole 4 formed in the lower end of the bucket link (3) The second circular member 5, which is connected to the lower portion of the first circular member 2 by the fixing means, is fixed to the lower side of the pour plates 6 and 7, wherein the second circular member 5 is Both ends are fixed inside the pour plates 6 and 7 by a plate 9 which is fixed as the fastening member 8 to the above-mentioned pour plates 6 and 7.

On the other hand, the fixing means is rotatably supported by a plate 12, one end of which is fixed as the fastening member 11 with respect to the protruding piece 10 formed inside the bucket link 3 by the above-described fixing means, the other end of the buoy A connecting member 14 is rotatably fixed and supported by the plate 9 which is fixed as the fastening member 8 with respect to the protruding piece 13 formed inwardly of the plates 6 and 7.

In addition, the hydraulic cylinder 17 for attaching and detaching the detachable device to and from the bucket B when driven in accordance with the hydraulic oil introduced through the inlet and outlet ports 15 and 16 inside the second circular member 5 described above, Through-holes 19 are formed in the rod portion 18 of the hydraulic cylinder 17 in the direction perpendicular to the axial direction, and in the coupling hole 20 formed in the aforementioned bucket plate 30 in the rod portion 18 described above. Fixing pin 21 for attaching and detaching the detachable device to the bucket (B) when detached is connected by a connecting pin (22).

At this time, the above-described rod portion 18 is inserted into the coupling hole 24 formed in the axial direction in the first diameter portion 23 formed in the fixing pin 21, and then formed in a direction perpendicular to the coupling hole 24 The above-described connecting pin 22 inserted into the through hole 25 is inserted and connected.

Meanwhile, the fixing pin 21 flows in the axial direction so that high loads and impacts acting on the fixing pin 21 described above can be directly transmitted to the connecting pin 22 and the hydraulic cylinder 17 during the operation. Possibly fixed.

That is, the gap with respect to the inner diameter difference of the through hole 19 formed in the rod part 18 with respect to the outer diameter of the connection pin 22 mentioned above is the 1st of the fixing pin 21 with respect to the outer diameter of the connection pin 22. It is formed larger than the gap with respect to the inner diameter difference of the through hole 25 formed in the diameter portion (23). In addition, the gap of the inner diameter difference of the through hole 19 of the rod portion 18 with respect to the outer diameter of the connecting pin 22 is the rod portion when the fixing pin 21 and the hydraulic cylinder 17 are connected. 18) smaller than the gap between the end 26 and the inner side surface 27 of the engaging hole 24 formed in the first diameter portion 23.

Then, the above-mentioned fixing pin 21 in a predetermined position on the inner surface of the pour plate (6) (7) toward one side of the coupling hole formed in the pour plate (6) (7) to which the fixing pin (21) is mounted. When coupled to the coupling hole 20 of 30, the stopper member 34 is formed to facilitate the coupling guide role.

In addition, between the above-described hydraulic cylinder 17 and the circular member 28 supported in close contact with one side of the first diameter portion 23 of the fixing pin 21, the fixing pin 21 is the bucket plate 30. In the state coupled to the coupling hole (20) formed in the above-described pressure loss of the hydraulic cylinder (17) by constantly maintaining the coupling state of the fixing pin 21, the fixing pin 21 is separated from the coupling hole (20) An elastic member 29 for preventing is installed.

The aforementioned inlet / outlet ports 15 and 16 of the hydraulic cylinder 17 are the second circular member 5 described above to restrain the rotation of the fixing pin 21 and the hydraulic cylinder 17 described above when the hydraulic cylinder 17 is driven. ) Is formed at a predetermined position.

Reference numeral 31 is a hydraulic cylinder for the bucket drive, 32 is a hydraulic cylinder for the boom drive.

Referring to the operation of the present invention configured as described above, in the case of mounting the attachment of the bucket (B) to the work device of the heavy equipment, by moving the equipment equipped with the attachment detachment device behind the bucket (B) placed on the ground predetermined position Next, the first circular member 2 formed on the upper side of the detachable device is seated by driving the bucket driving cylinder 31 to the hook portion 1 formed on the rear upper side of the bucket B.

Next, when the bucket cylinder 31 is driven to tilt and lift the bucket B toward the equipment side, the rear bottom surface of the bucket B is separated from the ground, and at this time, the coupling hole 20 of the bucket plate 30 has the same height. As the protrusion 33 contacts the stopper 34 formed at the lower end of the pour plates 6 and 7, the coupling hole 20 formed in the bucket and the same center line between the hydraulic cylinder 17 and the fixing pin 21 is formed. ), The center line will be coincident.

On the other hand, as the hydraulic oil flows into the hydraulic cylinder 17 through the inlet port 15 formed in the second circular member 5, the hydraulic cylinder 17 is extended by moving both side rod portions 18 thereof outwards. (At this time, the elastic member 29 is in an elongated state), which causes the end portion 26 of the rod portion 18 to be axially formed in the first diameter portion 23 of the fixing pin 21. First contact with the inner surface 27 of the, and then the fixing pin 21 is moved to the coupling hole 20 side formed in the bucket plate 30 of the bucket (B), so that the working device and the bucket (B) Mounting is complete (shown in FIGS. 2 and 3).

At this time, as described above, when the fixing pin 21 is coupled to the bucket B and leaks in the hydraulic cylinder 17 and pressure loss occurs in the hydraulic circuit of the equipment during the operation, the fixing pin 21 and the hydraulic pressure are generated. Since the coupling state of the fixing pin 21 is maintained by the elastic member 29 installed between the cylinders 17, it is possible to prevent the fixing pin 21 from being separated from the bucket B to secure safety that may be generated during operation. I can do it.

On the other hand, the high load and the impact generated on the bucket (B) during the operation of the equipment acting on the fixing pin 21, the fixing pin 21 can flow in the axial direction with respect to the rod portion 18 of the hydraulic cylinder (17) Since it is mounted so as to be directly transmitted to the hydraulic cylinder 17 is prevented.

This is the rod portion 18 described above, rather than the gap for the inner diameter difference of the coupling hole 20 formed in the bucket plate 30 coupled to the outer diameter of the second diameter portion 35 of the fixing pin 21 described above. The gap for the inner diameter difference of the coupling hole 24 formed in the first diameter portion 23 of the fixing pin 21 for the outer diameter of the through hole formed in the rod portion 18 for the outer diameter of the connecting pin 22 This is possible due to the large gap between the inner diameter differences in (19).

On the other hand, when the above-mentioned bucket (B) is detached from the working device, as shown in Figure 4, the hydraulic fluid is introduced into the hydraulic cylinder 17 through the outlet port 16 formed in the second circular member (5) Accordingly, the contraction of the hydraulic cylinder 17 causes contact between the through-hole 19 formed in the rod portion 18 and the connecting pin 22. As a result, the fixing pin 21 is formed in the aforementioned bucket plate 30. Returning from the through hole 20 (the elastic member 29 is in a compressed state), and the first circular member 2 is driven from the hook portion 1 of the bucket B by driving the bucket driving cylinder 31. As it is detached, the separating operation of the bucket B from the detaching device is completed.

As described above, the attachment and detachment device of the heavy equipment according to the present invention, the attachment and detachment of the attachment, such as a bucket is easy to provide convenience to the user, and the high load generated on the fixed pin detachable to the attachment during operation And by preventing the shock is transmitted directly to the hydraulic cylinder detaching the bucket has the advantage of improving leakage prevention and durability from the hydraulic cylinder, thereby increasing the competitiveness of the product has the advantage to increase the purchasing power.

It secures the safety of the equipment by eliminating the risk of falling of the attachments when the parts of the hydraulic circuit of the equipment are broken, and can greatly reduce the cost cost due to the simple configuration of the attachment, and the fixing connecting the work equipment and the attachments. Due to the structure in which the pin is in close contact with the working device as much as possible, there is an advantage in that the work force loss can be minimized when using the detachable device.

Claims (8)

In attachment detachment device of heavy equipment, A first circular member fixed to the bucket link and attached to and detached from the hook formed on the rear of the bucket; A second circular member connected to both sides of the first circular member by fixing means, and mounted to both of the buoy plate; A fixing pin axially connected to the hydraulic cylinder rod built into the second circular member by a connecting means and detachable from the bucket when the hydraulic cylinder is driven; Attached to both ends of the hydraulic cylinder attachment attachment detachment device of the heavy equipment characterized in that it is provided with a separation prevention means for preventing the separation of the bucket by maintaining the coupling state of the fixing pin when the pressure loss of the hydraulic cylinder. The method according to claim 1, The connecting means, The gap of the inner diameter difference of the through hole formed in the rod portion corresponding to the connecting pin with respect to the outer diameter of the connecting pin connecting the fixing pin to the hydraulic cylinder rod portion, the fixing pin with respect to the outer diameter of the connecting pin It is formed larger than the gap for the inner diameter difference of the through-hole formed corresponding to the connecting pin, it is characterized in that the high load and impact acting on the fixed pin during operation to prevent the transmission directly to the hydraulic cylinder and the connecting pin Attachment detachment device of heavy equipment. The method according to claim 1, The connecting means, The clearance gap between the inner diameter of the through hole formed in the rod portion corresponding to the connecting pin with respect to the outer diameter of the connecting pin is between the end of the rod portion and the inner surface of the coupling hole formed in the fixing pin corresponding to the rod. Formed smaller than the gap of, attachment and detachment device of heavy equipment, characterized in that the high load and impact acting on the fixed pin during operation to block the transmission directly to the hydraulic cylinder and the connecting pin. The method of claim 1, wherein the separation preventing means, A circular member supported in close contact with one end of the fixing pin; And an elastic member installed between the circular member and one end of the hydraulic cylinder to prevent the fixing pin from being separated from the bucket due to the pressure loss of the hydraulic cylinder when the fixing pin is coupled to the bucket. Attachment attachment and detachment device. The method of claim 1, wherein the inlet outlet port of the hydraulic cylinder is formed in a structure that is inserted and fixed in the coupling hole formed in the second circular member predetermined position to restrain the rotation of the hydraulic cylinder and the fixing pin when the hydraulic cylinder is driven. Attachment detachment device of heavy equipment, characterized in that. 2. The attachment and detachment device of claim 1, wherein both ends of the second circular member are fixed to the inside of the buoy by a fixing member positioned on the same center line as the through hole of the left and right boolean plates. The stopper member according to claim 1, wherein the stopper member is formed on the inner side of the buoy plate at one side of the coupling hole formed in the buoy plate to which the fixing pin is mounted, and the fixing pin serves to guide the coupling pin to the coupling hole of the bucket plate. Attachment detachment device of heavy equipment, characterized in that provided with. The method of claim 1, wherein the fixing means, one end is rotatably fixed to the inner surface of the bucket link, the other end is characterized in that it comprises a connection member is rotatably fixed to the inner surface of the pour plate Attachment attachment and detachment device of heavy equipment.