KR200262747Y1 - The apparatus for auto clamping of large excavator - Google Patents

Abstract

The present invention relates to a cramping device for a large excavator, and when described in detail, the bottom plate 8 of the 'ㅂ' shape having a through hole and side plates (1,1) formed on both sides of the bottom plate (8) ), A boss (2, 2 ') which is a through hole formed on both sides of the upper side of the side plates (1, 1'), and between the upper side of the bottom plate (8) and both side plates (1, 1 '). Located in, the side plate (1, 1 ') is welded and integrated with a reinforcing plate (5) having a through hole in the center, the auxiliary work hook (6) formed in the front center of the bottom plate and the bottom plate ( 8 is located in the upper front portion and coupled to the movable hook support 100 'formed between both side plates (1,1') and the movable hook support (100 '), the front of the bottom plate (8) A moving hook 100 formed to protrude downward, a hydraulic cylinder 3 connected to the moving hook 100 and mounted inside the reinforcement plate 5, and a rear of the hydraulic cylinder 3. Welded to the formed check valve (4), the cylinder rod protective rubber cover (9) formed on the rod portion of the hydraulic cylinder (3), and the attachment portion of the bottom plate (8) and both side plates (1,1 '). Clamping device for a large excavator, characterized in that consisting of a fixed hook 200 is welded to the bottom of the bottom plate (8) attached to the bottom of the bottom plate (8).

Description

Clamping device for large excavators {The apparatus for auto clamping of large excavator}

The present invention relates to a cramping device for a large excavator, which will be described in detail, can be used in all the large excavators of 0.8㎥ class or more in Korea, according to the type of excavator working accessories such as buckets, brakes, crushers, etc. The present invention relates to a clamping device for a large excavator that can be quickly and accurately exchanged and that can firmly and accurately fix the fixing pin of an accessory with a hydraulic cylinder.

In general, excavators widely used in construction work sites can be used to diversify the use of the excavator by installing a variety of additional work tools, including a unique bucket installed on the excavator according to the buyer's requirements. It is attached to the arm of the excavator tip by a fastening pin and an auto clamp.

As described above, a variety of operations are to be carried out to replace an excavation tool such as a bucket or a rock crushing tool. For such an exchange operation, first, the arm and the boom are lowered, and then the bucket is removed by removing the pins connecting the bucket and the arm. After aligning the centers of the excavator-side pinhole and the bucket and the pinholes formed in the rock-crushing tool, the pins of the excavator-side pinhole, the excavator-side pinhole and the excavator-side pinhole In the process of recombination, the exchange works.

However, in order to remove the pins inserted into the excavator side pinhole and the excavating tool side pinhole in the conventional exchanging tool, the separating shaft and the striking tool contacting the end face of the pin are used. Since the work must be over, the replacement work is very inconvenient, and the work is delayed by the replacement work

Compared to the clamping device that is generally applied to small and medium excavators, the large clamping device has a high risk of quality and large safety accidents due to structural problems of the product itself, such as warping, damage, and spreading of the product. There is a problem that the need to avoid the application while feeling the need.

The Korean Utility Model Publication No. 98-113146 discloses a clamp body which is integrally connected to the main arm and the auxiliary arm of an excavator with a shaft, and a locking portion formed at the lower part of the clamp body to easily assemble or disassemble the rock drill or bucket. Is installed in the rear of the clamp body a mandrel and the hook to hold the fixed rod of the rock drill or the basket, and the hydraulic cylinder is connected to the hydraulic circuit of the excavator to operate the hook,

Korean Utility Model Publication No. 99-12125 installs a pin support block having a semicircular groove in close contact with the circumferential surface of the first drilling tool side pivot installed in an excavating tool at one end of the clamp frame, and on the opposite side thereof, (2) A C-shaped clamp, which is removed and mounted on an excavation tool side pivot, is rotatably installed by a first clamp side pivot of the clamp frame, and one end of the fluid is rotatably coupled to the clamp frame by a tube support pin. A second clamp whose center is coincident with the first excavator side pinhole and the second excavator side pinhole formed on the arm of the excavator while the pivot end of the clamp is pivotally installed at the other end of the cylinder by a rod support pin. It consists of a pivot and a third clamp pivot,

In Korea Patent Publication No. 198156, a sliding groove is formed in a main bracket of a quick clamp to which an optional work machine is fastened, and a sliding plate is installed in the sliding groove so as to perform a linear reciprocating motion. The hook is inserted into the rotation pin fixedly inserted and detachably installed, and a cylinder for operating the hook to rotate the rear of the hook is installed through the fixing pin.

The conventional techniques have a high incidence of failure due to foreign matter penetrating into the rod portion of the hydraulic cylinder, the hydraulic cylinder is relaxed, the bucket is easy to be separated, the hydraulic pipe can be broken, it takes a lot of time during the replacement work This delay, there is a problem that can not be used in large excavators of more than 0.8㎥.

In order to solve the above problems, the present invention has a large risk of quality and large safety accidents due to structural problems of the product itself, that is, problems such as warping, breakage, spreading of the product, etc. To solve the problem of avoiding application to,

It is equipped with a large number of safety devices and supporting plates on both sides of the fixed hook and the mobile hook to prevent the safety accident as much as possible, and integrates the side plate and the reinforcement plate to prevent cracks and cracks, and the direction of the hydraulic cylinder connected to the mobile hook. It is a technical object of the present invention to provide a clamping device for a large excavator that improves the tightening force of the hydraulic cylinder and doubles the durability and stability by giving an inclination angle in the straight direction to proceed in the diagonal direction.

1 is a perspective view of a cramping device for a large excavator of the present invention

Figure 2 is an operation state before replacing the hydraulic cylinder bucket of the present invention

Figure 3 is an operating state when replacing the hydraulic cylinder bucket of the present invention

Figure 4 is a detailed view of the mobile hook of the present invention

Figure 5 is a side view of the mobile hook of the present invention

Figure 6 is a detailed view of the fixed hook of the subject innovation

7 is a side view of the fixed hook of the present invention

8 is a state diagram before installation of the support plate of the fixed hook of the present invention

9 is a state diagram after installing the support plate of the fixed hook of the present invention

Figure 10 is a bottom plate detailed view of the subject innovation

Figure 11 is a clamping device connection state diagram of the subject innovation

<Description of the Drawings>

Side plate (1,1 '), boss (2,2'), hydraulic cylinder (3), check valve (4), reinforcement plate (5), auxiliary work hook (6), round bar (7), bottom plate (8), cylinder rod protective rubber cover (9), groove (10), arm (11), bucket (12), moving hook (100), moving hook support (100 '), moving hook stiffener (101, 101') , Movable hook reinforcement pipe 102, movable hook safety device (103, 103 '), lubricating nipple protection cover 104, movable hook hook 105, fixed hook 200, fixed hook reinforcing plate 201, fixed hook reinforcing plate Pipes 202 and 202 ', fixed hook safety devices 203 and 203', fixed hook assembled fixed support plates 204 and 204 ', fixed hook hooks 205 and protrusions 206

In order to achieve the above object, the present invention is an improvement of the auto-clamping device for excavators registered in the registration number No. 192765, the designation of the present applicant filed and filed by the applicant, the present design, the 'ㅂ' shape is formed through holes Bosses (2,2) formed in the bottom plate (8), side plates (1,1 ') formed on both sides of the bottom plate (8), and through holes formed in the upper sides of the both side plates (1,1'). '), The reinforcing plate is located between the upper portion of the bottom plate (8) and the both side plates (1,1'), and welded and integrated with both side plates (1,1 ') and formed through holes in the center. (5), the hook 6 for auxiliary work formed in the front center portion of the bottom plate, and the movable hook support positioned between the front side of the bottom plate 8 and formed between both side plates (1, 1 ') ( 100 ') and the movable hook support 100' coupled to the movable hook support 100 'and protruding forward and downward of the bottom plate 8 and the movable hook 100; A hydraulic cylinder 3 connected to the hook 100 and mounted inside the reinforcement plate 5, a check valve 4 formed at the rear of the hydraulic cylinder 3, and the hydraulic cylinder 3 of the hydraulic cylinder 3. A cylinder rod protective rubber cover 9 formed on the rod portion, a circular rod 7 welded to the attachment portion of the bottom plate 8 and both side plates 1, 1 ', and the bottom plate 8 It relates to a large excavator clamping device, characterized in that consisting of a fixed hook 200 is welded to the rear lower portion of the.

Referring to the features of the present invention in detail,

First, as a diagonal operation direction application of the hydraulic cylinder (3) connected to the mobile hook 100, the bucket 12 mounted on the conventional excavator is a hydraulic cylinder connected to the mobile hook (100) to attach and detach a separate working device ( The method of moving the operation direction of 3) in the straight direction is adopted, but this method gives an inclination angle to the cylinder operating direction to double the durability and safety of the product by further improving the tightening force of the hydraulic cylinder 3 in the straight direction. By adopting the diagonal method of operation, the product's performance has been improved by improving the tightening capacity much more than before.In order to prevent the back flow of hydraulic oil in the event of an abnormality in the hydraulic line, a circular block type check valve (4) is provided inside the cylinder tube. By changing the appearance, function and installation space.

Second, by applying a two-stage safety prevention method by attaching a safety device and a backing plate on both sides of the fixed hook 200 and the mobile hook 100, it recognizes the importance of safety accidents in the nature of excavator work to prevent the risk of conventional excavators as much as possible In order to apply optimum safety measures by attaching separate two-stage safety devices on both sides of the mobile hook 100 and the fixed hook 200, which are connected to various devices, the operation is simplified by removing and attaching various devices. The efficiency was increased.

Third, attaching the circular rod (7) for preventing damage of the side plate (1), by attaching the circular rod (7) as described above for the weak durability of the conventional excavator to solve the problem caused by cracking, breakage of the product It was.

Fourth, the size of the outer diameter of the bosses 2 and 2 'is the same as that of the excavator arm bosses of the respective manufacturers, so that the outer diameters of both the bosses 2 and 2' are uneven during operation and are not balanced. Long-term work has solved the problem of shortening the life of the boss (2,2 ') due to scratching, abrasion, and deformation of the boss (2,2').

Fifth, the reinforcement plate 5 is integrated with the side plate 1 to maximize the durability of the product through local reinforcement of the inner and side plates, one of the most vulnerable parts, the inner and outer sides.

Sixth, by attaching the auxiliary work hook (6) in the central portion of one end of the clamping device, by connecting a separate component to the auxiliary work hook (6) to move or transport, to use the present invention for other purposes.

Seventh, the groove 10 is formed at the front rear end of the bottom plate 8, and the protrusion 206 of the fixed hook 200 is inserted and welded, thereby cracking the fixed hook 200 and the bottom plate 8. Problems such as cracking and breakage were solved.

Eighth, the external appearance of the product was curved to fit the shape of each part to improve the overall quality of the product. In order to improve the light weight and durability of the product, the material of important parts was as follows.

Name material Remarks Side plate SWS 50A Boss SM 45C Pin SCM 440 Stiffener AT60 SM 45C

Hereinafter, with reference to the drawings will be described in detail.

1 is a perspective view of a cramping device for a large excavator of the present invention, Figure 2 is an operating state before replacing the hydraulic cylinder bucket of the present invention, Figure 3 is an operating state when replacing the hydraulic cylinder bucket of the present invention, Figure 4 is the present invention 5 is a detailed view of the hook of the present invention, Figure 6 is a side view of the hook of the present invention, Figure 6 is a detailed view of the fixed hook of the present invention, Figure 7 is a side view of the fixed hook of the present invention, Figure 8 is before installing the support plate of the fixed hook of the present invention Figure 9 is a state diagram after the base plate installation of the fixed hook of the present invention, Figure 10 is a bottom view of the bottom plate of the present invention, Figure 11 shows a state diagram of the clamping device of the present invention, the reference numerals in the drawings Plate (1,1 '), boss (2,2'), hydraulic cylinder (3), check valve (4), reinforcement plate (5), auxiliary work hook (6), round bar (7), bottom plate ( 8), cylinder rod protective rubber cover (9), groove (10), arm (11), bucket (12), moving hook (100), moving hook support (100 '), moving hook stiffener (101, 101'), Reinforcing Hook Pipe 102, mobile hook safety device (103, 103 '), lubricating nipple protection cover (104), mobile hook hook (105), fixed hook (200), fixed hook reinforcing plate (201), fixed hook reinforcing pipe (202, 202') It can be seen that the fixed hook safety device (203,203 '), the fixed hook assembly fixed support plates (204, 204'), the fixed hook hook 205, the protrusion 206.

Looking at the configuration, Figures 1 to 3 relates to the clamping device and the hydraulic cylinder of the present invention, each part is made of a special material, the overall appearance is processed in a curve, the bottom of the 'ㅂ' shape formed through holes Plate 8, side plates 1 and 1 'formed on both sides of the bottom plate 8, and bosses 2 and 2' which are through holes formed on both sides of the upper sides of the side plates 1 and 1 '. And a reinforcing plate (5) located between the upper side of the bottom plate (8) and the side plates (1, 1 '), integrally welded with both side plates (1, 1'), and having a through hole at the center thereof (5). ), A hook for auxiliary work 6 formed at the front center of the bottom plate, and a movable hook support 100 'positioned between the side plates 1 and 1' on the front surface of the bottom plate 8; ) And a moving hook 100 coupled to the moving hook support 100 'and protruding forward and downward of the bottom plate 8 and the moving hook 100. ) Is connected to the hydraulic cylinder (3) mounted inside the reinforcement plate (5), the check valve (4) formed at the rear of the hydraulic cylinder (3), and the rod portion of the hydraulic cylinder (3) The formed cylinder rod protective rubber cover 9, a circular rod 7 welded to the attachment portion of the bottom plate 8 and both side plates 1, 1 ', and a rear lower portion of the bottom plate 8 The fixed hook 200 is welded to the structure consisting of,

4 and 5 are a detailed view and a side view of the movable hook, the movable hook 100 is a lubricating nipple protective cover 104 formed on the upper portion and the movable hook stiffening plate 101, 101 'added by reinforcement in both sides in the longitudinal direction. and. On the front of the movable hook hook ring 105, the movable hook reinforcing pipe 102 and the movable hook hook ring 105 is formed to hang the bucket in the lower portion of the movable hook hook ring 105 is added and reinforced. It is a structure composed of mobile hook safety devices (103, 103 ') formed in preparation for a safety accident,

6 and 7 are a detailed view and a front view of the fixing hook, and the fixing hook 200 is formed in a rectangular box shape because it receives a great force, and two grooves are formed at the rear side of the bottom surface of the bottom plate 8. 10, a protruding portion 206 formed to protrude on one end of the upper portion, a fixed hook reinforcing plate 201 added and reinforced on the upper portion, and a fixed hook hook formed to hook the bucket to the lower portion 10 (see Fig. 10). 205 and the fixed hook reinforcing pipes 202 and 202 'which are attached and reinforced along the concave edge of the fixed hook hook ring 205 and the hooks on the front surface of the fixed hook hook ring 205 due to cracking, breakage, and gaping of the hook. In order to prevent a large safety accident, it is composed of fixed hook safety devices (203, 203 ') formed on both sides, and fixed hook assembled fixed support plates (204, 204') formed on the outside of the fixed hook safety devices (203, 203 '),

8 and 9 show the state diagram before and after the installation of the fixed hook assembly type fixed support plate of the fixed hook of the present invention,

10 is a bottom view detail of the bottom plate of the present invention, a structure in which two grooves 10 for inserting and welding the protrusion 206 of the fixing hook 200 are formed.

Figure 11 is a clamping device connection state diagram of the present invention, connecting the clamping device of the present invention to the arm (11) of the excavator, the fastening bucket 12 to the mobile hook 100 and the fixed hook 200 connection It can be seen that the state is shown.

When the operation method is explained, when replacing the bucket 12, lift the arm 11 of the excavator to a suitable height, and operate the bucket adjustment lever with the arm 11 perpendicular to the ground to fix the clamping device hydraulically. After disassembling the fixed hook assembly fixed support plates 204 and 204 'of the hook 200, confirming that the safety devices 203 and 203' are opened, the hydraulic cylinder 3 is operated to remove the hook from the movable hook 100 to adjust the excavator. Lower the attachment to the ground, then fasten the attachment to be replaced to the fixed hook 200 to secure the safety devices (203, 203 '), then fasten the fixed hook assembled fixed support plates (204, 204'), and then the hydraulic pressure of the excavator. The cylinder 3 is operated to fasten the mobile hook 100 to fix the mobile hook safety devices 103 and 103 '.

The safety device (103, 103 ', 203, 203') may use a clamp formed only one in the center, if necessary, the fixed hook assembly fixed support plates (204, 204 ') may or may not be used as needed. However, when working with large excavators, the fixed hook assembly fixed support plates 204 and 204 'must be used in order to prevent large safety accidents due to cracking, breakage, and opening of the hook.

The device of the present invention as described above adopts a diagonal method to operate by giving an inclination angle to the cylinder operating direction, thereby significantly improving the performance of the product by significantly tightening the capacity of the conventional device, and attaching two-stage safety devices to the fixed hook and the mobile hook separately. Optimized safety measures were applied, and the work efficiency was improved by simplifying the detachment time when attaching and detaching various devices.The problem of cracks and breakage of products was solved by attaching round rods. And minimizing the weight to maximize the work efficiency under the condition that the equipment is not unreasonable during the operation of the excavator.The outer diameter of the boss is equal to the outer diameter of the excavator arm boss of each manufacturer, so that the balance between both bosses during operation Long-term operation by maintaining the risk of damage to the boss caused by scratches, The problem is solved, and the auxiliary work hook is attached to the end of the excavator, and the separate parts are connected to the auxiliary work hook to move or transport, and in particular, it is manufactured for large excavators of 0.8㎥ or more class, There is a significant effect on clamp damage and safety accidents such as hook cracks.

Claims (2)

In the cramping device for a large excavator, a bottom plate 8 having a through hole is formed, side plates 1 and 1 formed on both sides of the bottom plate 8, and both side plates ( 1, 1 ') is formed between the boss (2, 2'), which is a through hole formed on both sides of the upper portion, and between the upper portion of the bottom plate (8) and both side plates (1, 1 '), 1, 1 ') is integrated and welded to the reinforcement plate (5) formed in the center hole, the auxiliary work hook (6) formed in the front center portion of the bottom plate, and is located on the front top of the bottom plate (8) A movable hook support 100 'formed between both side plates 1 and 1' and a movable hook support 100 'coupled to the movable hook support 100' and protruding from the front lower portion of the bottom plate 8 to each other. 100, a hydraulic cylinder (3) connected to the movable hook (100) and mounted in the reinforcement plate (5), a check valve (4) formed at the rear of the hydraulic cylinder (3), and Hydraulic chamber A cylinder rod protective rubber cover 9 formed on the rod portion of the linder 3, a circular rod 7 welded to the attachment portion of the bottom plate 8 and both side plates 1, 1 ', and It is a structure consisting of a fixed hook 200 is welded to the rear lower portion of the bottom plate (8), The movable hook 100 is formed in the front lower portion of the bottom plate 8, the lubricating nipple protection cover 104 formed on the upper portion, and the movable hook reinforcement plate (101, 101 ') is added to both sides in the longitudinal direction. Both sides of the front hook of the mobile hook hook ring 105, the movable hook reinforcing pipe 102, and the reinforcing hook hook (105) added along the concave edge of the mobile hook hook ring 105 formed to hang the bucket in the lower portion. Clamping device for a large excavator, characterized in that consisting of a mobile hook safety device (103,103 ') formed by. According to claim 1, The fixed hook 200 is a protrusion 206 formed to protrude on one side of the upper end, the fixed hook reinforcing plate 201 added to the upper reinforcement, and a fixed hook formed to hang the bucket on the lower Hook hook 205, fixed hook reinforcing pipes 202 and 202 'reinforced along the concave edge of the fixed hook hook 205, and fixed hook safety devices formed on both sides of the front of the fixed hook hook 205 ( 203,203 'and a fixed hook assembled fixed support plate (204,204') formed to the outside of the fixed hook safety device (203,203 ').