KR100814475B1 - A combining structure for pin in construction equipment - Google Patents

Abstract

A pin coupling structure for construction equipment is provided to prevent the rotation of a rod and to increase disassemblability and assemblability of a pin with a simple structure, and to prevent the axial separation of a pin by simplifying a coupling structure of a rod pin. A pin coupling structure for construction equipment comprises a pin(200) coupled to one end of a cylinder rod of a crusher, coupled to two sides of a bracket main body to support the rod and provided with projections(210) having different outside diameters, bushing members coupled to cover the outer circumferential surface of the pin and coupled to two sides of the bracket main body, and a cap member(310) coupled to be retreated toward the inside of the bushing member and provided with a retreated groove(315) corresponded to the projection of the pin to couple with two ends of the pin, wherein the pin and the cap member are coupled with a coupler, and the coupler is composed of fastening bolts(410) and inserted to fastening holes(214,312) formed on the pin and the cap member to couple the pin and the cap member integrally.

Description

A COMBINING STRUCTURE FOR PIN IN CONSTRUCTION EQUIPMENT}

1 is a front view showing a conventional crusher.

Figure 2 is a cross-sectional view showing a rod pin coupling structure for a conventional construction equipment.

Figure 3 is a perspective view showing a rod pin coupling structure for construction equipment according to the present invention.

Figure 4 is a cross-sectional view of the bonded state of the present invention.

Figure 5 is a use state showing a state in which the pin coupling structure of the present invention is applied to the shear.

Explanation of symbols on the main parts of the drawings

103: bushing material 103a: coupling hole (of the bushing material)

200: pin 210: protrusion

212: contact surface (projection part)

214: fastener

310: cap member 312: fastening hole (of cap member)

315: groove part 315a, 315b: protrusion piece

410: fastening bolt 420: fastening bolt

The present invention relates to a rod pin coupling structure for construction equipment, and in particular, by improving the coupling structure of the rod pin for supporting the cylinder rod for construction equipment such as crusher or shearing machine, the left and right rotation of the rod with the simple structure of the rod pin The present invention relates to a rod pin coupling structure for construction equipment whose structure has been improved to prevent separation.

In general, excavators, which are construction equipment, are configured to selectively mount equipment such as buckets, shears, crashers, etc. to the end of the working arm connected to the main boom according to the work purpose. The equipment is configured to be operated by hydraulics installed on the excavator itself.

Each of the devices is coupled to a plurality of pins to support the cylinder rod to the body, or rotatably support the mechanical components of the equipment to the body, and has a separate coupling structure to prevent the pins from coming off.

Among them, a crusher (crusher) is applied to the construction traveling equipment is configured to operate the scissors operation jaw for crushing the concrete structure with a hydraulic cylinder, the conventional crusher is laminated on the upper and lower as shown in Figure 1 and 2 The turning device 100 having the fixed plate 100a and the turning plate 100b and the upper surface of the fixed plate 100a are fixed by welding, for example, to a boom device (not shown) for operation of the traveling device. A pair of front and rear fixing brackets 101 to be attached, a pair of front and rear bracket bodies 102 fixed by welding, for example, to allow turning to both sides of the lower part of the turning plate 100b, and the front and rear pair of bracket bodies Left and right pairs of rod pins 200 respectively connecting the left and right pairs of cylinder bodies 104 to the upper left and right pairs of bushing members 103 and the left and right sides respectively installed in the pair of left and right cylinder bodies 104. At the bottom of the pair of pistons 105 A pair of left and right pairs of scissors actuating jaws 107, the outer ends of which are connected to each other freely by a pair of left and right pin shafts 109, and a pair of bracket main bodies of the upper and inner ends of the left and right pairs of scissors actuating jaws 107, respectively. It consists of a pair of left and right rotating bolts 110 to connect the lower both ends of the 102 freely.

At this time, the left and right pair of rod pins 200 are hinged to the inner diameter of the left and right pair of bushing members 103 and the upper and inner ends of the left and right pair of cylinder rods 104a.

Rotating ring shafts 111 are located at both ends of the lower inner side of the front and rear pairs of bracket bodies 102, respectively.

In the figure, reference numeral 107a indicates a tooth (TOOTH), and 110a indicates an oil groove.

The rod pin is press-fitted to penetrate the end of the rod, and has a function of supporting the end of the rod.

At this time, the existing rod pin is formed with a tapered stopper surface at the end of the rod pin 200 to prevent the left and right rotation of the rod, and the stopper 102a corresponding to the stopper surface to the outside of the bracket body 102 It is formed to protrude so as to prevent the rotation of the rod pin 200, and to prevent the separation of the washer member (not shown) to one end of both ends of the rod pin 200 to prevent the axial separation.

Therefore, since the stopper 102a and the end of the rod pin protrude outward of the bracket main body 102 in the conventional coupling structure of the rod pins, there is a risk of being damaged by colliding with an external structure during the crushing operation. In order to combine the washer member on the outer circumferential surface of one end, it is necessary to form a separate coupling groove and insert the washer member into the coupling groove. There was a problem such as working.

In addition, when assembling and disassembling the rod pins on the rod side, the rod pins are pushed into or removed from the rods using a hammering tool such as a hammer. There was a problem.

The present invention has been proposed to solve the above problems in view of the above problems, the object of which is to improve the disassembly and assembly of the pin while preventing the rotation of the rod in a simple structure by improving the coupling structure of the pin, It is to provide a pin coupling structure for construction equipment whose structure has been improved to prevent axial deviation.

The present invention for achieving the above object is a pin coupled to the main shaft for construction equipment,

Both ends of the pin are coupled to the outer side by a coupling means and a groove portion corresponding to the protrusion is formed on one side, characterized in that it comprises a cap member capable of coupling the uneven.

Coupling means of the present invention is formed with a fastening hole having a screw thread on the end of the pin and the cap member, respectively

Is fastened to the fastening hole of the pin and the cap member is provided with a fastening bolt to integrate the pin and the cap member.

In addition, the groove portion of the present invention is formed symmetrically to face each other on one side of the cap member and the inner side facing each other is formed with a projection piece having a straight shape, the projections on both sides of the outer peripheral surface corresponding to the inner surface of the projection piece It is preferable that the contact surface is formed on both sides, so that the outer circumferential surface of the protrusion and the inner surface of the projection piece are unevenly coupled by surface contact with each other.

It is preferable to further include a bushing material which is integrally fastened by the cap member and the fastening means and positioned inside the main body for construction equipment and fitted to both ends of the pin.

The fastening means of the present invention is formed with a coupling hole having a screw thread on the inner circumferential surface and respectively corresponding to the cap member and the bushing material,

Is coupled to the coupling hole of the cap member and the bushing material is provided with a coupling bolt for integrating the cap member and the bushing material.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same components as those of the conventional components described above will be denoted by the same reference numerals and redundant descriptions will be omitted.

The pin coupling structure for construction equipment according to the present invention will be described with reference to FIGS. 3 and 4. When the pin coupling structure is a pin for supporting the cylinder rod of the crusher as an example, the cylinder rod of the crusher ( The pin 200 is axially coupled to one end of the 104a and coupled to both sides of the bracket body 102 to support the rod 104a and to have protrusions 210 having different outer diameters at both ends thereof, Bushing material 103 is coupled to surround the outer circumferential surface of both ends and integrally coupled to both sides of the bracket body (main body for construction equipment) 102, recessedly coupled to the inside of the bushing material 103 and pin 200 It is composed of a cap member 310 which is integrally coupled by both ends of the coupling means and the end of the pin 200 is unevenly coupled.

In more detail, the pin 200 has a form in which the outer circumferential surface of the protrusion 210 has a straight contact surface 212 formed on both sides thereof, and the remaining outer circumferential surface portion is formed in an arc shape.

In addition, the cap member 310 has a groove portion 315 corresponding to the protruding portion 210 of the pin 200 is formed on one side, the projection piece of the form facing each other to form the groove portion 315 ( 315a and 315b are formed, and the inner surfaces of the projection pieces 315a and 315b are formed in a straight line shape so as to correspond to the contact surfaces 212 of the pins 200, so that the convex and convex coupling by the surface contact is possible.

And, the coupling means for integrally coupling the pin 200 and the cap member 310, the pin 200 and the cap member 310, the fastening holes 214, 312 having a thread on the inner peripheral surface, respectively, is formed The fastening bolts 410 are inserted into the respective fastening holes 214 and 312 to integrate the pin 200 and the cap member 310.

In addition, the cap member 310 is formed so that the fastening hole 312 penetrates in the center, and the coupling hole 314 for fastening with the bushing material 103 is formed at the edge portion spaced apart from the fastening hole 312. have.

The cap member 310 is formed in the same position as the coupling hole 314 of the coupling hole 103a of the bushing material 103, the thread is formed on the inner circumferential surface of the coupling hole 314, the coupling bolt 420 It has a structure integrated with the bushing material 103 by the.

The bushing material 103 is composed of a steel material, and integrally coupled to both sides of the bracket body 102, the end of the pin 200 is accommodated and the cap member 310 is coupled to recess inwardly Has

Referring to the operation of the present invention having such a structure is as follows.

The pin coupling structure for the construction equipment of the present invention, by adopting the concave-convex coupling method of the surface contact the coupling method of the pin 200 and the cap member 310, to prevent the left and right rotation of the rod, when applied to the cylinder rod and In addition, the cap member 310 is integrally fastened to the pin 200 and the bushing material 103 by using the screw type fastening bolt 410 and the coupling bolt 420, thereby preventing the pin 200 from being axially separated. It is to be done.

The coupling method of the pin 200 and the cap member 310 constitutes the recess 315 of the cap member 310 on both contact surfaces 212 of the protrusions 210 formed on both end sides of the pin 200, respectively. After the inner side surfaces of the both side projection pieces 315a and 315b are coupled to be in surface contact, the fastening holes 214 of the pin 200 and the fastening holes 312 of the cap member 310 using the fastening bolts 410. ), The coupling process between the cap member 310 and the pin 200 is completed.

Subsequently, when the cap member 310 is fastened to the bushing member 103 by the coupling bolt 420, the cap member 310 is integrally coupled to the bushing member 103, and the outer surface of the cap member 310 is fixed. Since the position is recessed inward than the outer surface of the bushing material 103, the coupling bolt 420 or fastening bolt 410 has a structure that does not protrude to the outside of the bracket body.

At this time, when rotating the coupling bolt 420 in one direction or the other direction, the cap member 310 is close to or spaced apart from the side of the bushing material 103, the cap member 310 is fastened to the pin 200 and the fastening bolt When rotating the coupling bolt 420 in a state coupled integrally by (410), it is possible to move the pin 200 in the axial direction without using a hammer, such as a hammer, so assembling and disassembling easily It can be done.

That is, the cap member 310 is maintained integrally coupled to the pin 200 when the fastening bolt 410 is fastened, the pin 200 during the rotation operation for fastening or disengagement of the fastening bolt 420 Interlocked with the axial movement of the cap member 310 has an operation process that is coupled to or separated from the rod.

Therefore, since the assembly of the rod pin and the cap member 310 is made by a simple fastening assembly structure, not only the workability is improved, but also the cap member 310 to which the fastening bolt 410 and the coupling bolt 420 are coupled. Since it has a recessed structure that does not protrude to the outside, there is an advantage that it is not exposed from external hazards.

On the other hand, Figure 5 shows a state in which the pin coupling structure of the present invention is applied to the shear side, it shows that the pin coupling structure is not only applied to the rod pin, but also applied to other pins.

The structure of the shearing machine is provided with hydraulic cylinders 104 on both sides of the shearing body 12, and one end of the cylinder rod and the one end to perform the scissors operation by the rod (104a) of the hydraulic cylinder (104) It is composed of a pair of cutting jaws (14) and (16) coupled to each other by coupling pins (14a) and (16a) and rotatably coupled to the other side by a rotation pin (15). 14a) and 16a and rotating pin 15 can also be applied.

That is, the coupling pin 14a, 16a and the rotation pin 15 is also provided with a cap member 310 formed with protrusions and grooves to have a structure that is concave-convex, the pin coupling structure of the present invention only the rod pin of the crusher This does not mean that it is applicable to all the pins for construction equipment.

As described above, the present invention has a simple structure, which improves the disassembly and assembly workability of the pin and prevents the axial detachment. Accordingly, the present invention provides a concave-convex coupling method between the pin and the cap member. Therefore, when the coupling structure of the pin is applied to the cylinder rod pin, it prevents the left and right rotation of the pin and the rod, and the screwing method of the cap member, the pin and the bushing material does not require a hammer-type hitting mechanism. It has a useful effect to improve disassembly and assembling.

In addition, the pin coupling structure of the present invention is applicable to the shaft or the pin for supporting the mechanical elements for construction equipment, when the pin coupling is improved assembly and assembly is the same size, there is an advantage in parts management.

Claims (5)

In the pin coupling structure for construction equipment coupled to the main body for construction equipment, Protrusions 210 formed to protrude on both ends of the pin 200, Construction site, characterized in that the coupling member is coupled to the outer side of the both ends of the pin 200 and the groove portion 315 corresponding to the protrusion 210 is formed on one side, the cap member 310 can be coupled to the unevenness. Cost pin coupling structure. The method according to claim 1, The coupling means has a fastening hole 214, 312 having a screw thread on the end of the pin 200 and the cap member 310, respectively, Construction site characterized in that it is fastened to the fastening holes 214, 312 of the pin 200 and the cap member 310, the fastening bolt 410 to integrate the pin 200 and the cap member 310. Cost pin coupling structure. The method according to claim 1, The recess 315 is formed on one side of the cap member 310 to be symmetrical to face each other and the inner side facing each other is formed projections (315a, 315b) having a straight shape, The protrusion 210 has contact surfaces 212 corresponding to the inner surfaces of the protrusion pieces 315a and 315b on both sides of the outer circumferential surface thereof, The outer circumferential surface of the protrusion 210 and the inner surface of the projection piece (315a, 315b) is coupled to the concave-convex structure by the mutual surface contact. The method according to any one of claims 1 to 3, Construction site characterized in that it further comprises a bushing material 103 which is integrally fastened by the cap member 310 and the fastening means and positioned inside the main body for construction equipment and fitted to both ends of the pin 200, respectively. Cost pin coupling structure. The method according to claim 4, The fastening means has a coupling hole 314 (103a) having a screw thread on the inner circumferential surface and respectively corresponding to the cap member 310 and the bushing material 103, It is fastened to the coupling hole 314 (103a) of the cap member 310 and the bushing material 103 is provided with a coupling bolt 420 for integrating the cap member 310 and the bushing material (103) Pin coupling structure for construction equipment.

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