KR101068130B1 - Multi-grapple for excavator - Google Patents

Abstract

The multi grapple of the present invention,

A pair of upper tongs 30, which are formed in a corresponding size and shape, are coupled to each other with the support plate 31 interposed in the center, and are operated according to the expansion and contraction of the cylinder rod 12 connected to the driving arm 11. And; a pair of lower tongs 50 which are formed in a corresponding size and shape and are mutually coupled to each other with the base plate 53 interposed therebetween; and the pair of upper tongs and lower tongs integrally connected. First coupling sphere 41 and the second coupling sphere 42 are bidirectionally arranged side by side bilateral parallel so as to interlock at the same time; A pair of reinforcing brackets 60 in which a plurality of binding holes are drilled to enable flexible and stable rotation; and the reinforcing brackets are fixedly mounted on the outer side of the reinforcing bracket so as not to be separated from the upper and lower tongs. Between clamp and reinforcing bracket A pair of link assemblies 70 for inducing a firm binding; and disposed in a space between the pair of reinforcing brackets, mounted on the third and fourth binding members 94 and 93 for interconnecting opposite reinforcing brackets. And a pair of holding frames 80 provided with a plurality of fastening holes corresponding to the sizes of the second, third, and fourth binding members so as to self-mount the second, third, and fourth binding members. The second binding member is characterized in that the fixing holder 20 mounted on the rear surface of the driving arm can be accommodated.

Excavator tongs, excavator grapple

Description

Detachable, self-mounting multi grapple for excavators {MULTI-GRAPPLE FOR EXCAVATOR}

The present invention relates to a grapple (Grapple, pliers) configured to be replaceable to the excavator in order to grip, load or transport a predetermined object, and more particularly to the configuration of the grapple mounted on the end of the drive arm of the excavator By actively improving, the operator can easily install and remove the grapple without going through a separate manual process, and furthermore, by configuring one hydraulic cylinder to drive both tongs at the same time, It is easy to attach and detach which has the advantage of maximizing work efficiency and efficiency, such as reducing the maintenance and repair cost of equipment by minimizing the load that is biased to the hydraulic cylinder. A self-mounting multi grapple for excavators.

In general, an excavator is a kind of construction equipment widely used in various fields of construction, including ground reclamation work for water and sewage work, and land and land excavation work in the mountains and forests. An ordinary bucket at the end of an arm connected to a boom It is used in combination.

The bucket is a structure that can be rotated to the inside of the arm by the hydraulic cylinder, by which the bucket is driven, it is convenient to move a small object such as soil or sand. However, the receiving structure of the bucket is useful for the movement of a small object such as soil or sand, but as the bucket is rotated inside the excavator to dispose of the object, such as bulky landscape stone or wood, the bucket There is a possibility of causing a safety accident, such as unacceptable inside, lack of a sense of stability even if accommodated, it is difficult to move, falling frequently during the movement.

Therefore, in recent years, a grapple (GRAPPLE) composed of various shapes so as to easily hold a large object is mounted on an excavator. The grapple is a kind of gripping mechanism also commonly referred to as tongs, and is used for loading and unloading solid wood or fume pipes, or collecting scrap metal in a junkyard.

1 is a schematic configuration diagram illustrating a conventional grapple device, the configuration of which is as follows.

Rotating arm (B) is coupled to the boom (A) by a pin (C), a pair of tongs (D, E) gripping the structure in the lower portion of the rotating arm (B) so that they can be mutually collapsed or open It is installed, the cylinder (F, G) is hinged by a plurality of links (H) between the pivot arm and each of the tongs. Therefore, in the state where the rod of the cylinder is pulled as far as possible, a pair of tongs are opened to each other. In such a state, the structure is positioned between the tongs, and when the rod of the cylinder is pulled out, the target structure is appropriately gripped.

The grapple device of the conventional excavator described above requires expensive cylinders having a large stroke between the body and the tongs in order to simultaneously lift or open a pair of tongs, thereby increasing production costs and driving each cylinder. In order to configure a separate hydraulic line in order to face a problem that involves a lot of difficulties in the construction of the hydraulic circuit.

In addition, the excavator performs the operation while replacing the various kinds of attachment mechanisms according to the type of work, in this case, in the case of the object that can not be collected by the fume pipe or other buckets in addition to the grapple as described above proceeded to work Bar, to mount or remove the grapple to the excavator arm, the driver who was previously located in the excavator driver's seat controls the boom and the arm, while the assistant aligned the pin hole of the arm and the grapple, and then fixed it separately. The process was passive, with pin insertion done in concert with the operator.

This, in turn, delays the replacement time of the attachment mechanism (grapple), which takes a considerable amount of time for the replacement operation, and as the manual grapple replaces the grapple composed of considerable weight and size in comparison with other equipment, Not only is it not easy to replace, but the work efficiency and efficiency is deteriorated, and the worker is exposed to heavy equipment, and a series of work is still in the limit of safety accidents.

The present invention has been made in order to more actively solve the above problems, in the construction of the self-mounting multi-grapple for excavator easy to detach the present invention;

The grapple,

A pair of upper tongs formed in a corresponding size and shape to be coupled to each other with the support plate interposed in the center, and operated according to the expansion and contraction of the cylinder rod connected to the driving arm; and,

A pair of lower tongs formed in a corresponding size and shape to be coupled to each other with a support plate interposed in the center; and,

And a pair of forceps interlocking plates, in which the first binding sphere and the second binding sphere are arranged side by side in both directions so that the pair of upper and lower pair of tongs are integrally connected at the same time.

A pair of reinforcing brackets are formed by connecting them on the outer side of the upper end of the upper tongs and the lower tongs, and having a plurality of binding holes perforated to enable flexible and stable rotation.

A pair of link assemblies fixedly mounted on an outer surface of the reinforcing bracket so that the reinforcing bracket is not separated from the upper and lower clamps to induce a solid bond between the upper and reinforcing brackets;

Disposed in the space between the pair of reinforcing brackets, mounted on the third and fourth binding members for interconnecting the reinforcing brackets facing each other, and having a size corresponding to that of the second, third and fourth binding members. A pair of axle frame is provided with a plurality of fastening holes; And,

The second fastening member formed to penetrate in the lateral direction through the fastening hole of the storage frame has a fixed holder mounted to the rear side of the driving arm.

According to the present invention having the configuration described above, the grapple of the present invention can be mounted on or removed from the excavator boom by simple operation of the driver located in the excavator driver's seat, so the replacement time of the grapple is extremely easy and the replacement time is shortened. In addition, the work efficiency is further improved, which is expected to prevent the occurrence of a safety accident in advance.

Particularly, in the present invention, the grapple interlocking plate is additionally installed to simultaneously link the forceps A and the forceps B with only one hydraulic cylinder hydraulic force, maximizing the working effect by operating the grapple with a minimum cylinder stroke, In addition, there is an advantage in that the grapple connected to the driving arm is actively prevented from being artificially separated by a malfunction or carelessness, thereby implementing improved stability.

In addition, it is configured to distribute the load weighted to the forceps interlocking plate has an effect that is applied to more various devices and objects.

Excavators used in the construction and civil engineering fields have a desired work by connecting work equipment such as a bucket, a breaker, a crasher, a concrete crusher to the tip of an arm according to the type of work, and in the present invention, such work equipment applied to an excavator It is noted that, among these, the configuration of the grapple (tweezer) device is actively improved, and the grapple device is configured so that the drive arm of the grapple and the excavator can be easily combined with each other.

Figure 2 shows an exploded perspective view of the present invention, Figure 3 shows an overall perspective view of the present invention, Figures 4a and 4b shows the operating state of the present invention,

Typically, the excavator is coupled to the boom to rotate by the hydraulic force of the cylinder on one side of the main body, the driving arm is coupled to the front end of the boom to be rotatable within a predetermined angle range, a plurality of fixed pins on the end of the drive arm It is assumed that the grapple is combined using the basic configuration.

As shown in FIG. 2, the multi grapple of the present invention includes a pair of upper tongs 30; A pair of lower tongs 50; Forceps interlocking plate 40; A pair of reinforcing brackets 60; A pair of snow frame 80; And a plurality of lock pins 43, 44, 38, 97 and a plurality of binding members 91, 95, 94, 93, 92 for binding them to each other. 11) the lock holder 20 is secured to interact with the fixed holder 20 mounted.

The upper tongs 30 are components that are connected to a boom (not shown) of the excavator and are rotated within a predetermined angle range by a driving arm 11 driven by a cylinder, and as shown in the present invention, face each other. Pin rods 37 are formed so as to be viewed in a direction to fix the support plate 31 provided in a predetermined plate shape in a central space thereof with a separate fixing pin 32, and protrude at predetermined intervals in a cylindrical shape on each inner surface of the upper tongs. 98 is constructed, and a plurality of insertion holes 33, 34, 35, 36, and 99 are drilled to allow a plurality of lock pins and binding members to be described later. The pin rod 37 not only fixes the second fixing hook 14b to be accommodated in the third lock pin 38 to flow in both directions, but also reinforces the frame so that the third lock pin can be more firmly supported. The other pin rod 98 is inserted into a predetermined fifth lock pin 97 to secure the first fixing hook 14a.

The upper tongs 30 are drilled with the first insertion hole 33, the second insertion hole 34, the third insertion hole 35, the fourth insertion hole 36 and the tenth insertion hole 99. In each of the first insertion holes, the first binding member 91 is inserted and assembled, and the fitting portion 71 of the link assembly 70 is inserted into the second insertion hole, and the first locking pin 43 is inserted into the third insertion hole. ), The third locking pin 38 is inserted into the fourth insertion hole, and the first locking pin 43 mounted to the forceps interlocking plate is individually accommodated in the tenth insertion hole.

The lower tongs 50 are arranged side by side in the same manner as the upper tongs 30 to fix the support plate 53 provided in a predetermined plate shape in the center space with another fixing pin 53, each lower tongs A fifth insertion hole 51 and a sixth insertion hole 52 are formed therein so that both ends of the second lock pin 44 and both ends of the fifth binding member 92 are easily inserted into each other. Lower tongs are integrated to realize the same movement.

The forceps interlock plate 40 is a main part of the present invention for simultaneously driving the pair of upper forceps 30 and the lower forceps 50 described above, the shape of which is a square of the appropriate thickness as shown in FIG. The first binding hole 41 and the second binding hole 42 are formed of a frame, and both ends of the horizontal axis are formed in the longitudinally inner space so as to accommodate the predetermined lock pins 43 and 44.

The first locking pin 43 is inserted into the first engagement hole 41 of the forceps interlocking plate 40 so that both ends of the first locking pins are fixed to the tenth insertion holes 99 of the upper tongs 30. On the other hand, the second locking pin 44 is inserted into the second binding hole 42 of the forceps interlocking plate 42 so that both ends of the second locking pins are fit and accommodated in the fifth insertion hole 51 of the lower tongs 50. This is how you maintain engagement.

The reinforcement bracket 60 is a component that is operated in a link manner in order to implement a smooth rotation between the upper and lower tongs by arranging the upper and lower ends of the upper and lower tongs in common on the adjacent outer surface. Binding hole 61; A second binding hole 62; Third binding hole (63); The fourth binding hole 64 is drilled. In constructing the pair of reinforcing brackets 60 facing each other, the third binding member 94 is formed in the first binding hole, the fourth binding member 93 is formed in the second binding hole, and the third binding hole is formed in the third binding hole. The first binding member 91 is introduced into the fifth binding member 92 and the fourth binding hole, respectively.

The snow frame 80 is formed in a gentle curved shape, the second fastening hole 81, the third fastening hole 82, the fourth fastening hole 83 is formed in a form spaced apart at appropriate intervals, and arranged facing Located in the upper space of the lower tongs 50, the second binding member 62, the third binding member 94, the fourth binding member (93) by sequentially pulling in and fixed a pair of reinforcing brackets 60 described above ) It is a structure built in the longitudinal direction in the space between.

Reference numeral 70 denotes a linkage assembly 70 applied to the present invention, which is manufactured in the same shape as in FIG. 2 and serves to interconnect the reinforcing bracket 60 and the upper tongs 30. . That is, the reinforcing brackets are positioned to intersect the fourth binding hole 64 of the reinforcing bracket and the first insertion hole 33 of the upper tongs so that the reinforcing brackets may be linked to the outer surface of the upper tongs, and the first of the link assembly. The fastening holes 72 are also arranged at the same point so as to be continuous with the fastening holes 72, and then the separate first fastening members 91 are inserted in the order of the first fastening holes, the fourth fastening holes, and the first insertion holes, and the like. Insert into the accessory.

In addition, the other end portion of the link assembly 70 is formed by the other insertion portion 71 of the cylindrical protruding by a predetermined interval to move the upper tong by rotating the fitting to the second insertion hole 34 of the upper tong. As a result, the link assembly reciprocates within a predetermined range starting from the first binding member 91 inserted into the reinforcing bracket 60. As a result, the linkage assembly is interlocked with the upper tong as it is through the reinforcing bracket on the outer side of the upper tong to prevent the reinforcing bracket from being separated from the upper tong, and implements the same movement according to the rotation of the upper tong. Done.

The fixed holder 20 is fixed to the back of the boom of the excavator to be configured to hang up the multi grapple of the present invention, which is formed in a U-shaped semi-circular shape inserted through a pair of snow-frame frame 80 It is configured to be accommodated in the second binding member (95).

The upper tong 30 and the lower tong 50, which are referred to in the present invention, are merely classified by way of example for convenience of description, and may be difficult to be interpreted in a specific meaning only in a dictionary meaning.

In the present invention, the first, second, third, and fifth lock pins 43, 44, 38, and 97 have the same diameter and length, and are mounted between opposite tongs, and both ends thereof are fixedly firmly engaged with the tongs. As a result, each of the tongs forms a spaced space at a predetermined distance. In addition, the first, second, third, fourth, fifth fastening members 91, 95, 94, 93, and 92 in the present invention are fastening tools having the same diameter and different lengths, and the fittings such as nuts are attached to the other end. The combination is fixed to the bar, by the coupling of the respective binding member, the corresponding portion is rotated in a hinged manner to enable a flexible rotation. Since this configuration is similar to the same technical idea as the related art, a detailed description thereof will be omitted.

Hereinafter, the operation method of the present invention and the effect implemented by the multi grapple constructed by the most preferred embodiment will be described below. However, the present invention to be described below is not limited to the specific embodiments described above, and those skilled in the art to which the present invention pertains without departing from the gist of the invention claimed in the claims are various Modifications may be made.

In general, in operating an excavator, the driver operates the driving arm and the auxiliary worker directly attaches the grapple by pins and the like, but it is not easy to replace the grapple. It is a series of devices to actively solve problems such as frequent accidents.

In constructing the multi grapple of the present invention;

The multi grapple,

A pair of upper tongs 30, which are formed in a corresponding size and shape, are coupled to each other with the support plate 31 interposed in the center, and are operated according to the expansion and contraction of the cylinder rod 12 connected to the driving arm 11. And; a pair of lower tongs 50 which are formed in a corresponding size and shape and are mutually coupled to each other with the base plate 53 interposed therebetween; and the pair of upper tongs and lower tongs integrally connected. First coupling sphere 41 and the second coupling sphere 42 are bidirectionally arranged side by side bilateral parallel so as to interlock at the same time; A pair of reinforcing brackets 60 in which a plurality of binding holes are drilled to enable flexible and stable rotation; and the reinforcing brackets are fixedly mounted on the outer side of the reinforcing bracket so as not to be separated from the upper and lower tongs. Between clamp and reinforcing bracket A pair of link assemblies 70 for inducing a firm binding; and disposed in a space between the pair of reinforcing brackets, mounted on the third and fourth binding members 94 and 93 for interconnecting opposite reinforcing brackets. And a pair of holding frames 80 provided with a plurality of fastening holes corresponding to the sizes of the second, third, and fourth binding members so as to self-mount the second, third, and fourth binding members. The second binding member is characterized in that the fixing holder 20 mounted on the rear surface of the driving arm can be accommodated.

Referring to the overall assembly process of the multi grapple,

After the pair of upper tongs 30 are disposed to face each other at proper intervals, the support plate 31 is fixed by a separate fixing pin 32 and the first binding member 91 is inserted into the first insertion hole 33 of the upper tongs. ), Wherein the first binding member 91 is inserted into the first insertion hole 33 through the fourth binding hole 64 of the reinforcing bracket 60 disposed outside the upper clamp, and inserted into the upper clamp of the upper clamp. The protruding fitting portion 71 formed at one end of the link assembly 70 is inserted into the second insertion hole 34, and the first coupling unit 40 is coupled to the forceps interlocking plate 40 in the tenth insertion hole 99 of the upper tongs. The end of the lock pin 43 is fitted so that both ends of the first lock pin maintain a firm engagement between the pair of upper tongs. In addition, a third locking pin 38 is further inserted into the fourth insertion hole 36 of the upper tong to further strengthen the pair of upper tongs 30 spaced apart, and then, the third locking pin is second fixed. The hook 14b is latched and accommodated.

With the assembly of the upper tongs 30, the lower tongs 50 are also spaced apart and arranged at the same interval as the upper tongs, and the support plate of a gentle curved type in the space between the spaced lower tongs by another fixing pin 53 Are mutually coupled. The sixth insertion hole 52 of the lower tongs coupled to the support plate is positioned to overlap with the third binding hole 63 of the reinforcing bracket 60 proximate from the outside to insert the fifth binding member 92. Each end of the second lock pin 44 coupled to the forceps interlocking plate is inserted into the fifth insertion hole 51 formed in the lower tongs.

As a result, the forceps interlocking plate 40 has a cylinder rod connected to the driving arm 11 as the first locking pin 43 and the second locking pin 44 are fitted to one end of the upper clamp and the lower clamp respectively. 12) is driven to drive the third lock pin 38, the upper clamp coupled to the third lock pin is driven, as well as the upper clamp is driven while the lower clamp 50 is fixedly coupled to the forceps interlocking plate. It is possible to operate both tongs at the same time in one cylinder stroke.

On the other hand, in the space between the lower tongs a pair of snowfall frame 80 is placed in, the snowfall method is the first binding hole 61 formed in the reinforcement bracket 60 and the third fastening hole 82 of the snowfall frame To insert the third binding member 94 and the second binding hole 62 of the reinforcing bracket coincides with the fourth fastening hole 83 of the storage frame to insert the fourth binding member 93. Is implemented. The storage frame 80 is fixed by means mounted to the third and fourth binding members, and a second fixing member 95 is inserted into the second fastening hole of the storage frame to fix the mounting frame 80 to the driving arm. 20 can be taken.

The fixed holder 20 is fixed to the back of the drive arm, as shown in the figure, the cylinder rod 12 associated with the drive arm is hinged to the clamp 14 by a plurality of link portions (13). The clamp 14 has the same or similar technical contents as in the prior art, and the first fixing hook 14a and the second fixing hook 14b each having a hook shape are constructed at the bottom thereof, and the first fixing hook 14a The second locking hook 14b is fixed to the fifth locking pin 97 fitted into the third insertion hole 35 of the upper tongs, and the second fixing hook 14b is mounted by a separate cylinder (not shown) seated inside the clamp. As the rod is stretched, it may be relaxed forward or contracted in place, and the second fixing hook 14b is appropriately fixed to the third lock pin 38 coupled to the upper tong 30 by such an action. It becomes possible.

Referring to the process of the multi-grapple is coupled to the driving arm step by step as follows.

First, an operator located in the driver's seat of the excavator drives the driving arm by operating a boom and then slightly lowers the clamp 14 hinged to the end of the driving arm to operate the first locking hook 14a as a fifth lock pin (97). ), Another cylinder provided in the inner space of the clamp is driven so that the second fixing hook 14b is pulled out in front and rear to realize close contact with the third lock pin 38. In the position where the first fixing hook 14a is engaged with the fifth lock pin 97, the position is based on the body center side of the fifth lock pin that does not belong to the pin rod 98 formed on the upper tong. As a result, the end portion of the first fixing hook 14a is accommodated so that the end of the first fixing hook 14a is not biased, so that a more stable binding can be established.

When the above coupling process is completed, the driver operates the driving arm to draw out the cylinder rod, and according to the withdrawal of the cylinder rod, the front end of the clamp is rotated within a predetermined range by the hinge shaft connecting the driving arm and the clamp. Bar, such a rotation of the clamp lifts or lowers the third lock pin 38 caught on the second fixing hook 14b and the fifth lock pin 97 caught on the first fixing hook 14a at the same time. By working, the desired work is achieved.

As the second fixing hook 14b is driven by the rotation of the clamp 14, the upper clamp 30 coupled with the third lock pin 38 and the fifth lock pin 97 implements the vertical movement. The upper and lower movements of the upper tongs are transmitted to the lower tongs 50 fixedly coupled by the second lock pin 44 by means of the forceps interlocking plate 40, and as a result, the upper tongs and the lower tongs are operated simultaneously with only one cylinder drive. can do.

1 is a block diagram showing an example of a grapple device of a conventional configuration.

Figure 2 is an exploded perspective view of a multi grapple constructed in accordance with a preferred embodiment of the present invention.

Figure 3 is a perspective view of the combination of the multi grapple constructed according to an embodiment of the present invention.

Figure 4a is a side cross-sectional view of a multi grapple constructed in accordance with a preferred embodiment of the present invention.

Figure 4b is an exemplary cross-sectional view showing an operating state of the multi grapple constructed in accordance with a preferred embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

11 driving arm 12 cylinder rod

13 link portion 14 clamp

14a: 1st fixed hook 14b: 2nd fixed hook

20: fixed holder 30: upper clamp

31: support plate 33: first insertion hole

34: second insertion hole 35: third insertion hole

36: fourth insertion hole 37: pin rod

38: third lock pin 40: clamp interlock plate

41: first binding sphere 42: second binding sphere

43: first lock pin 44: second lock pin

50: lower tong 51: the fifth insertion hole

52: sixth insertion hole 60: reinforcement bracket

61: the first binding ball 62: the second binding ball

63: the third binding ball 64: the fourth binding ball

70: link assembly 71: fitting

72: first fastening hole 80: snow frame

81: 2nd fastener 82: 3rd fastener

83: fourth fastening hole 91: the first fastening member

92: fifth binding member 93: fourth binding member

94: third binding member 95: second binding member

97: fifth lock pin 98: pin rod

99: 10th insertion hole

Claims (3)

In constructing a grapple which is automatically mounted on the clamp 14 consisting of the first and second fixing hooks 14a and 14b, The grapple, It is formed in the same size and shape so as to face each other, the plate-shaped support plate 31 is fixed in the center space with a fixing pin, the first, second, third, fourth, and ten insertion holes (33, 34) , 35, 36, 99 is a pair of upper tongs 30, respectively, and; It is formed in the same size and shape so as to face each other, and the plate-shaped support plate 53 is fixed to the center space with a fixing pin, and the fifth insertion hole 51 and the sixth insertion hole 52 are A pair of lower tongs 50, each drilled; and, Both ends of the horizontal axis of the forceps interlocking plate (40) consisting of a first binding port 41 and the second binding port 42 formed through the inner side so as to accommodate the lock pins (43, 44); And, A pair of reinforcing brackets 60 are disposed outside the upper ends of the upper tongs 30 and the lower tongs 50, and the first, second, third, and fourth binding holes 61, 62, 63, and 64 are perforated, respectively. ;and, The first fastening hole 72 is drilled at one end, and the other end is formed with a cylindrical fitting portion 71 extending and protruding to form a pair of link assemblies connecting the upper tongs 30 and the reinforcing bracket 60. 70; And Easily removable excavator, characterized in that it comprises a; a pair of snow frame 80 made of a gentle curved shape to form the second, third, fourth fastening holes (81, 82, 83) spaced at appropriate intervals; Auto-mounted multi grapple for The method of claim 1, A third locking hole 14a is inserted into the third insertion hole 35 of the upper tongs so that the first locking hook 14a is fixed to the center of the fifth lock pin and is coupled to the upper tongs. The second fixing hook 14b is fixed to the center side of the pin 38 so that the third lock pin 38 and the fifth lock pin 97 can be lifted or lowered at the same time. Self-mounting multi grapple for easy excavators. The method of claim 1, On one surface of the upper tongs 30, a plurality of pin rods 37 and 98 are formed to protrude at a predetermined interval in a cylindrical shape and penetrate the inside thereof to form the third lock pin 38 and the first lock pin 97. The reinforcement, the self-mounting multi-grapple for easy detachable excavator, characterized in that the pin rod 37 is configured to be fixed so that the second fixing hook (14b) does not flow in both directions.

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