KR102372171B1 - Rotating device for attachment device of construction equipment - Google Patents

Abstract

The present invention relates to a rotating device for an attachment device of construction equipment, comprising: a boom connection member for being connected to be a boom of construction equipment; a rotating frame arranged on the boom connection member; a centering fixed to the rotating frame; a worm wheel installed on the centering to be able to rotate; a worm installed on the rotating frame to be able to rotate so as to be combined with the worm wheel; a hydraulic motor installed on the rotating frame to rotate the worm; an attachment member fixed to the worm wheel to rotate together with the worm wheel and allowing a rotating device for operation to be attached; and a center joint mounted on the centering to be prevented from being separated downward so that rotation can be inhibited by a hanging member while being hung on a bump structure, and providing working fluid toward the attachment member from the upside. According to the present invention, the housing of the centering joint is combined by the step structure of a key or pin structure to improve the ease of assembly, convenience of maintenance and repairs. Grease grooves are formed on the worm wheel, which is centered and in contact therewith to supply lubricating oil to provide smooth rotating operation, oil supply to the rotating device and the fixed quick coupler is enabled through a hitch block arranged on the center joint to enable oil to be supplied smoothly to the rotating device.

Description

Rotating device for attachment device of construction equipment

The present invention relates to a rotating device for an attachment device for construction equipment, and more particularly, to have excellent assembly properties, to increase the convenience of maintenance and repair, to provide a smooth rotating operation, and to provide a smooth oil supply to the rotating device. It relates to a rotating device for the attachment device of construction equipment that makes it possible.

In general, construction equipment is used by attaching a variety of attachment devices for use in various operations, including buckets, rippers, face-sharing machines, etc. A rotary device equipped with a hydraulic motor is used.

Accordingly, the construction equipment enables the change of the working direction by rotating the attachment device by the rotational driving force of the rotating device, so that various tasks can be easily performed.

In relation to the technology for rotating the attachment device of the conventional construction equipment, there is "ROTARY DEVICE FOR AN ATTACHMENT ON A MACHINE" (published on February 27, 2013) of European Patent Publication No. 02561145.

In this prior art, the stator may consist of two parts including a shrink fitting or a bearing ring firmly connected to the central cylindrical part by compression, but it is connected immovably as an integral composite, so maintenance and management are difficult.

In addition, the prior art has a problem in that it is difficult to smoothly rotate the worm wheel because the lubricating oil cannot be smoothly supplied to the worm wheel and the outer circumferential surface of the stator in contact with the worm wheel.

In addition, in the prior art, the distributor block fitted in the rotary joint under the stator is configured to only connect the pressure oil on the device side, and the working fluid supply structure to the device side has a problem in that it is insufficient to ensure durability and reliability.

In order to solve the problems of the prior art, the present invention provides not only excellent assembling property, but also improved convenience in maintenance and repair, by combining the housing of the centering joint by a key or pin structure and a step structure, and a worm wheel A grease groove for lubricating oil supply is formed in the center ring and the center ring in contact with it, thereby providing smooth rotation operation, and by enabling oil supply to the rotation device and fixing the quick coupler through the hitch block provided in the center joint, the rotation device The purpose is to enable smooth oil supply of

In order to solve the above problems, according to an aspect of the present invention, a boom connecting member for being connected to the boom of the construction equipment; a rotating frame provided on the boom connecting member; a centering fixed to the rotating frame; a worm wheel rotatably installed on the centering; a worm rotatably installed on the rotating frame so as to be gear-coupled to the worm wheel; a hydraulic motor installed on the rotating frame to rotate the worm; an attachment member fixed to the worm wheel, rotating together with the worm wheel, and attaching a rotating device for work; and a center joint mounted so that rotation is suppressed by a locking member in a state caught by a jaw structure so as to suppress downward departure from the centering, and supplying a working fluid from an upper side to the attachment member; Containing, construction equipment A rotating device for the attachment device is provided.

The centering is formed with an outer locking jaw upward along the outer circumferential surface so as to be caught on the downward locking jaw formed downwardly on the inner circumferential surface of the worm wheel, and is hooked on the lower locking jaw formed downward on the outer circumferential surface of the center joint inserted into the inside. An inner locking jaw may be formed along the inner circumferential surface.

The center joint may be inserted into the opening of the boom connection member and an upper locking jaw for suppressing the upward departure by being caught inside the opening may be formed on the outer peripheral surface of the lower locking jaw on the upper side.

The centering is fastened to the fixing bolt passing through the rotation frame, so that it is directly coupled to the lower side of the rotation frame, and is fastened to the boom connection member and the fixing bolt passing through the rotation frame, so that the boom connection member is also can be combined.

The rotating frame and the center joint have fixing grooves each formed so as to be opened upwardly on opposite sides of each other, and the fixing groove is formed by the boom connecting member in a state in which a locking member made of a key or a pin is inserted into the fixing groove. By blocking the upper end of the locking member can be accommodated in the fixing groove so that separation is suppressed.

The rotating frame has a mounting hole formed to pass through one side, and in a state in which the worm is rotatably accommodated in the mounting hole, one side of the mounting hole is detachably blocked by a worm cover, and the other side of the mounting hole is A hydraulic motor connected to the worm is fixed by a bracket, and a motor cover surrounding the hydraulic motor may be detachably installed to open a port of the hydraulic motor.

In the centering, a first grease groove may be formed on an outer circumferential surface.

The first grease groove may be formed on an outer peripheral surface of the centering in a spiral form downward from an upper end.

A second grease groove may be formed on a surface of the worm wheel.

The second grease grooves may be formed in a radial direction on the upper end of the worm wheel to extend perpendicularly to an inner circumferential surface of the worm wheel, and may be formed in plurality at intervals along the circumferential direction of the worm wheel.

The worm may have a third grease groove formed on an outer surface thereof.

The third grease groove may be formed to extend from the outer peripheral surface of the boss portion at both ends in the radial direction of the flange, and may be formed in plurality at intervals along the circumference of the boss portion.

a center block connected to the upper end of the center joint, installed on the boom connecting member, and provided with ports for supplying and discharging a working fluid; and connected to the lower end of the center joint and installed to be exposed downwardly to the attachment member, and connected for supply and discharge of the working fluid through the center block through the center joint, the working fluid for the rotating device It may further include; a hitch block provided with ports for supply and discharge.

According to the rotary device for the attachment device of construction equipment according to the present invention, since the housing of the centering joint is coupled with the key or pin structure and the step structure, not only the assembly property is excellent, but also the convenience of maintenance and repair can be increased, and the worm wheel By forming a grease groove for lubricating oil supply in the centering and the centering in contact with it, it is possible to provide a smooth rotational operation. It has the effect of enabling the smooth supply of oil to the device.

1 is a perspective view showing a rotating device for an attachment device for construction equipment according to an embodiment of the present invention;
2 is a rear perspective view showing a rotating device for an attachment device for construction equipment according to an embodiment of the present invention;
3 is a side cross-sectional view showing a rotating device for an attachment device for construction equipment according to an embodiment of the present invention;
Figure 4 is a side cross-sectional view for explaining the center joint coupling structure of the rotary device for the attachment device of the construction equipment according to an embodiment of the present invention,
5 is an exploded perspective view for explaining the assembly of the worm wheel and the worm in the rotating device for the attachment device of construction equipment according to an embodiment of the present invention;
Figure 6 is an exploded perspective view for explaining the assembly of the boom connection member and the center joint in the rotary device for the attachment device of the construction equipment according to an embodiment of the present invention,
Figure 7 is an exploded perspective view for explaining the assembly of the hitch block in the rotary device for the attachment device of the construction equipment according to an embodiment of the present invention,
8 is an exploded perspective view for explaining the assembly of the attachment part in the rotary device for the attachment device of construction equipment according to an embodiment of the present invention;
Figure 9 is an exploded perspective view for explaining the assembly of the hydraulic motor in the rotary device for the attachment device of the construction equipment according to an embodiment of the present invention,
10 is a perspective view showing the centering of the rotating device for the attachment device of construction equipment according to an embodiment of the present invention,
11 is a side view showing the centering of the rotating device for the attachment device of construction equipment according to an embodiment of the present invention,
12 is a perspective view showing a worm wheel of a rotating device for an attachment device for construction equipment according to an embodiment of the present invention;
13 is a perspective view showing a worm of a rotating device for an attachment device for construction equipment according to an embodiment of the present invention;
14 is a perspective view illustrating an assembly of a center block, a center joint, and a hitch block of a rotating device for an attachment device of construction equipment according to an embodiment of the present invention;
15 is a rear perspective view showing an assembly of a center block, a center joint, and a hitch block of a rotating device for an attachment device of construction equipment according to an embodiment of the present invention;
16 is a side cross-sectional view showing an assembly of a center block, a center joint, and a hitch block of a rotating device for an attachment device of construction equipment according to an embodiment of the present invention;
17 is another cross-sectional side view showing an assembly of a center block, a center joint, and a hitch block of a rotating device for an attachment device for construction equipment according to an embodiment of the present invention.

Since the present invention can have various embodiments with various modifications, specific embodiments will be described with reference to the drawings as an example. In addition, it should be understood that the present invention is not limited to these specific examples, and includes all modifications, equivalents or substitutes included in the technical spirit of the present invention.

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings, and the same reference numbers are assigned to the same or corresponding components regardless of reference numerals, and overlapping description thereof will be omitted. do it with

1 is a perspective view showing a rotating device for an attachment device for construction equipment according to an embodiment of the present invention, Figure 2 is a rear perspective view showing a rotation device for an attachment device for construction equipment according to an embodiment of the present invention, Figure 3 is a side cross-sectional view showing a rotating device for an attachment device for construction equipment according to an embodiment of the present invention.

1 to 3 , the rotating device 100 for an attachment device for construction equipment according to an embodiment of the present invention includes a boom connecting member 110 , a rotating frame 120 , a centering 130 , and a worm wheel 140 . ), a worm 150 , a hydraulic motor 160 , an attachment member 170 and a center joint 180 .

1 to 3 and 6 , the boom connecting member 110 is to be connected to the boom of the construction equipment, and a plurality of connecting pins 113 to be connected to the boom may be provided, and the construction equipment is In order to serve as a crane, a hook 114 may be provided on one side for fastening the ring shackle, and an opening 115 for exposing the center joint 180 may be formed. Here, the connecting pin 113 may be installed so as not to be separated from the boom connecting member 110 by being fastened with the anti-separation bolt 113a at one end.

Referring to FIGS. 1 to 3 , 5 , 6 and 9 , the rotating frame 120 is provided on the lower side of the boom connecting member 110 . The rotating frame 120 may be fixed to the lower side of the boom connecting member 110 by a plurality of fixing bolts 111 having the washers 111a interposed therebetween. In the rotation frame 120 , an opening 121 may be formed for installation of the center joint 180 , and a wear ring 123 may be installed between the rotation frame 140 and the worm wheel 140 , and slide on the lower open side. The plate 124 may be fixed by a fixing bolt 124a, and an O-ring 128 may be interposed between the plate 124 and the boom connecting member 110 .

The rotating frame 120 may have a mounting hole 122 formed to pass through it horizontally on one side. The hydraulic motor 160 connected to the worm 150 on the other side of the mounting hole 122 may be fixed by the bracket 163. In addition, the motor cover 129 surrounding the hydraulic motor 160 may be detachably installed to open the port 161 of the hydraulic motor 160 . Here, the worm cover 125 may be detachably fixed by a fixing bolt 126 having a washer 126a interposed therebetween. Also, the rotating frame 120 may be detachably fixed to the motor cover 129 by a fixing bolt 129a having a washer 129b interposed therebetween.

Referring to FIGS. 3, 5, 10 and 11 , the centering 130 is fixed to the lower side of the rotating frame 120 . In addition, the centering 130 has an outer locking jaw 131 formed upward along the outer circumferential surface so as to be caught on the downward locking step 146 formed downwardly on the inner circumferential surface of the worm wheel 140, and a center joint 180 inserted inside. An inner locking jaw 132 may be formed along the inner circumferential surface so as to be caught on the lower locking jaw 184 formed downward on the outer circumferential surface of the .

The centering 130 is fastened to the fixing bolt 127 passing through the rotating frame 120 , so that it can be directly coupled to the lower side of the rotating frame 120 , and the boom connecting member 110 and the rotating frame 120 are connected to each other. By being fastened with the washer (112a) interposed to the penetrating fixing bolt 112, it is also coupled with the boom connecting member 110, thereby enabling a firm fixation. To this end, the centering 130 may be formed so that a plurality of first and second fastening grooves 133 and 134 for screwing each of the fixing bolts 112 and 127 are opened upward in a circumferential direction.

The centering 130 may have a first grease groove 135 formed on an outer circumferential surface thereof. The first grease groove 135 may be spirally formed on the outer circumferential surface of the centering 130 from the top to the bottom, so that the grease can be smoothly supplied to the outer circumferential surface opposite to the inner circumferential surface of the worm wheel 140 . .

3, 5 and 12 , the worm wheel 140 is rotatably installed on the outer peripheral surface of the centering 130 . The worm wheel 140 has a plurality of teeth 141 formed along the outer circumferential surface, and the pin 143 is interposed between the attachment member 170 and the attachment member 170 to increase the fixing force with the attachment member 170, and the attachment member ( A plurality of fixing holes 142 are formed along the circumferential direction so that an O-ring 145 may be interposed between the device and 170 to prevent leakage of grease, and the fixing bolt 178 passes through and the washer 178a is interposed therebetween. and a second grease groove 144 may be formed on the surface.

The second grease grooves 144 may be formed in a radial direction on the upper end of the worm wheel 140 to extend perpendicularly to the inner circumferential surface of the worm wheel 140 , and are formed in plurality at intervals along the circumferential direction of the worm wheel 140 . In this case, it is possible to smoothly inject grease between the centering 130 and the gear coupling portion with the worm 150 .

3, 5 and 13, the worm 150 is rotatably installed on the rotating frame 120 so as to be gear-coupled to the worm wheel 140, both ends of which are interposed between the bush 154 and the bearing 155. It can be installed to rotate smoothly in the mounting hole 122 of the rotary frame 120, one end can be rotatably supported by the worm cover 125, and a third grease groove 153 is formed on the outer surface. can be formed.

The third grease groove 153 may be formed to extend from the outer peripheral surface of the boss portion 151 at both ends in the radial direction of the flange 152, and may be formed in plurality at intervals along the circumference of the boss portion 151, For this reason, it is possible to smoothly inject grease into the gear coupling portion of the worm 150 and the worm wheel 140 .

1 and 9 , the hydraulic motor 160 is installed in the rotating frame 120 to rotate the worm 150 . The hydraulic motor 160 may have an O-ring 162 interposed between it and the rotating frame 120 , and a bracket 163 fixed to the rotating frame 120 by a fixing bolt 164 having a washer 164a interposed therebetween. ) may be fixed to the rotating frame 120 by the

1 to 8 , the attachment member 170 is fixed to the worm wheel 140 and rotates together with the worm wheel 140 so that a rotating device for work is attached thereto. Here, the rotating device may correspond to a variety of devices for use in various operations, including a bucket, a ripper, a shaving machine, and the like.

The attachment member 170 may be provided with a locking part 171 on one side so that the rotating device is caught, and a support part 172 is provided on the other side to support the fixing pin of the rotating device, which is operated by the cylinder 173. The fixing block 175 may make the fixing pin of the rotating device detachably adhere to the support 172 . The cylinder 173 may be provided with a port 173a for supply and discharge of oil as a working fluid. The cylinder 173 may be hinged to the attachment member 170 by the first pin 174 fixed by the stop ring 174a. The fixing block 175 may be hinged to the piston rod of the cylinder 173 by the second pin 176 fixed by the stop ring 176a. In addition, the fixing block 175 may be hinged to the attachment member 170 by the third pin 177 fixed by the stop ring 177a.

Referring to FIGS. 3, 4, 6 and 14 to 17 , the center joint 180 is rotated by the engaging member 185 in a state caught by the jaw structure so that the downward separation is suppressed by the centering 130 . It is mounted so that this is suppressed, and the working fluid is supplied from the upper side to the attachment member 170 side. Here, the locking member 185 may be formed of, for example, a key member or a pin member.

The center joint 180 is inserted into the opening 115 of the boom connection member 110 and caught on the inside of the opening 115, so that the upper locking jaw 183 for suppressing the upward departure is the lower locking jaw on the outer circumferential surface ( 184) may be formed on the upper side.

The rotation frame 120 and the center joint 180 may have fixing grooves 129c and 186 respectively formed so as to be opened upwardly on the sides facing each other, and a locking member formed of a key or a pin in the fixing grooves 129c and 186 . In the state in which the 185 is inserted, the upper ends of the fixing grooves 129c and 186 are blocked by the boom connection member 110, so that the locking member 185 can be accommodated in the fixing grooves 129c and 186 to suppress separation. . The fixed structure of the center joint 180 provides an easy attachment/detachment structure of the center joint 180, thereby making maintenance and repair convenient.

The center joint 180 may have a center block 190 installed at an upper end, and a hitch block 210 may be installed at its lower end, for example, a center block 190 at the upper end of the housing 181 serving as an outer casing. This may be installed to be connected, and the hitch block 210 may be connected to the lower end of the inner rotating body 182 . The center joint 180 is installed so that the rotating body 182 is rotatable in the housing 181 , and at least two or more first flow paths 181a provided in the housing 181 are provided in the center block 190 in the port ( The second flow path ( 182a) is formed, and it can maintain a state connected to the fourth flow path 212 connected to the port 213 of the hitch block 210 in the second flow path 182a.

The center block 190 may be installed on the boom connecting member 110 by being connected to the fixing bolt 191 having a washer 191a interposed at the upper end of the center joint 180, and for supply and discharge of the working fluid. A port 192 may be provided, and an O-ring 194 for preventing leakage of oil, which is a working fluid, may be interposed between the port 192 and the center joint 180 .

The hitch block 210 is connected to a fixing bolt 211 having a washer 211a interposed at the lower end of the center joint 180 and may be installed to be exposed downwardly to the attachment member 170, and the center joint 180 is installed. It may be connected for supply and discharge of the working fluid through the center block 190 as a medium, and a port 213 for supply and discharge of the working fluid to the rotating device may be provided, and between the center joint 180 and the An O-ring 215 for preventing leakage of oil, which is a working fluid, may be interposed therebetween. In addition, the hitch block 210 may be formed such that the interference avoiding groove 214 faces downward to avoid interference with the cylinder 173 .

According to the rotating device for the attachment device of construction equipment according to the present invention, the housing of the centering joint is coupled by a key or pin structure and a step structure, thereby improving assembly property and improving the convenience of maintenance and repair. .

In addition, according to the present invention, since a grease groove for supplying lubricant is formed in the worm wheel and the centering in contact with it, a smooth rotation operation can be provided.

In addition, according to the present invention, by enabling supply of oil to the rotating device and fixing the quick coupler through the hitch block provided in the center joint, it is possible to smoothly supply oil to the rotating device.

Although the present invention has been described with reference to the accompanying drawings as described above, various modifications may be made without departing from the spirit of the present invention. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be defined by the claims and their equivalents.

110: boom connecting member 111, 112: fixing bolt
111a, 112a: washer 113: connecting pin
113a: escape prevention bolt 114: hook
115: opening 120: rotating frame
121: opening 122: mounting hole
123: wearing ring 124: slide plate
124a: fixing bolt 125: worm cover
126: fixing bolt 126a: washer
127: fixing bolt 128: O-ring
129: motor cover 129a: fixing bolt
129b: washer 129c: fixing groove
130: centering 131: external jamming jaw
132: inner locking jaw 133: first fastening groove
134: second fastening groove 135: first grease groove
140: worm wheel 141: teeth
142: fixing hole 143: pin
144: second grease groove 145: O-ring
146: lower jaw 150: worm
151: boss 152: flange
153: third grease groove 154: bush
155: bearing 156: O-ring
160: hydraulic motor 161: port
162: O-ring 163: bracket
164: fixing bolt 164a: washer
170: attachment member 171: locking part
172: support 173: cylinder
173a: port 174: first pin
174a: stop ring 175: fixed block
176: second pin 176a: stop ring
177: third pin 177a: stop ring
178: fixing bolt 178a: washer
180: center joint 181: housing
181a: first flow path 182: rotating body
182a: second flow path 183: upper locking jaw
184: lower engaging jaw 185: engaging member
186: fixed groove 190: center block
191: fixing bolt 191a: washer
192: port 193: 3rd euro
194: O-ring 210: hitch block
211: fixing bolt 211a: washer
212: 4th Euro 213: Port
214: interference avoidance groove 215: O-ring

Claims (13)

a boom connecting member for being connected to the boom of the construction equipment;
a rotating frame provided on the boom connecting member;
a centering fixed to the rotating frame;
A worm wheel rotatably installed on the centering
a worm rotatably installed on the rotating frame so as to be gear-coupled to the worm wheel;
a hydraulic motor installed on the rotating frame to rotate the worm;
an attachment member fixed to the worm wheel, rotating together with the worm wheel, and attaching a rotating device for work; and
A center joint that is mounted so that rotation is suppressed by a locking member in a state caught by a jaw structure so as to suppress downward departure from the centering, and supplies a working fluid from an upper side to the attachment member; and
The rotating frame and the center joint,
Fixing grooves are respectively formed so as to be opened upwardly on opposite sides, and the upper end of the fixing groove is blocked by the boom connecting member in a state in which a locking member made of a key or a pin is inserted into the fixing groove, so that the locking member is A rotating device for an attachment device for construction equipment, which is accommodated in the fixing groove to suppress separation. The method according to claim 1,
The centering is
The outer locking jaw is formed upward along the outer circumferential surface so as to be caught on the downward locking jaw formed downward on the inner circumferential surface of the worm wheel, and along the inner circumferential surface to be caught by the lower locking jaw formed downwardly on the outer circumferential surface of the center joint inserted into the inside A rotating device for an attachment device for construction equipment, in which an internal locking jaw is formed. 3. The method according to claim 2,
The center joint is
Inserted into the opening of the boom connection member and hooked on the inside of the opening, an upper locking jaw for suppressing the upward departure is formed on the outer peripheral surface of the lower locking jaw, the rotation device for the attachment device of construction equipment. 4. The method according to any one of claims 1 to 3,
The centering is
By being fastened to a fixing bolt passing through the rotation frame, so that it is directly coupled to the lower side of the rotation frame, and by being fastened to a fixing bolt passing through the boom connection member and the rotation frame, it is also coupled with the boom connection member, Rotating device for attachment device of construction equipment. delete 4. The method according to any one of claims 1 to 3,
The rotating frame is
A mounting hole is formed to penetrate through one side, and in a state in which the worm is rotatably accommodated in the mounting hole, one side of the mounting hole is detachably blocked by a worm cover, and the other side of the mounting hole is connected to the worm. A motor is fixed by a bracket, and a motor cover surrounding the hydraulic motor is detachably installed to open a port of the hydraulic motor. 4. The method according to any one of claims 1 to 3,
The centering is
A rotating device for an attachment device for construction equipment, in which a first grease groove is formed on an outer circumferential surface. 8. The method of claim 7,
The first grease groove is
A rotating device for an attachment device for construction equipment, which is formed in a spiral form from the top to the bottom on the outer circumferential surface of the centering. 4. The method according to any one of claims 1 to 3,
The worm wheel is
A rotating device for an attachment device for construction equipment, in which a second grease groove is formed on the surface. 10. The method of claim 9,
The second grease groove,
A rotating device for an attachment device for construction equipment, which is radially formed on the upper end of the worm wheel, extends perpendicularly to the inner circumferential surface of the worm wheel, and is formed in plurality at intervals along the circumferential direction of the worm wheel. 4. The method according to any one of claims 1 to 3,
The worm is
A rotating device for an attachment device for construction equipment, in which a third grease groove is formed on the outer surface. 12. The method of claim 11,
The third grease groove,
A rotating device for an attachment device for construction equipment, which is formed to extend from the outer peripheral surface of the boss at both ends in the radial direction of the flange, and is formed in plurality at intervals along the circumference of the boss. 4. The method according to any one of claims 1 to 3,
a center block connected to the upper end of the center joint, installed on the boom connecting member, and provided with ports for supplying and discharging a working fluid; and
It is connected to the lower end of the center joint and is installed to be exposed downwardly to the attachment member, and is connected for supply and discharge of the working fluid through the center block through the center joint, and the supply of the working fluid to the rotating device and a hitch block provided with a port for discharging;
Further comprising, a rotating device for the attachment device of construction equipment.

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