KR100661598B1 - Bucket clamping device of carry lift type bucket crane - Google Patents

Abstract

A bucket clamping device of a carry lift type bucket crane is provided to fix the length of a moving rod and to prevent the bucket from inclining by assembling a sheave, a triangle plate and the lower door as an opening member. A bucket clamping device of a carry lift type bucket crane comprises a hoist lifting unit(110) extended to the lower part by predetermined length, and formed with an electric motor(118a) installed on a horizontal moving frame(105), a pair of drums(113) where a wire rope is hoisted, connected to the back and the front of the motor; a bucket(120) combined to the lower end of each wire rope mounted at the back and the front of the hoist lifting unit; a fixing unit(130) connected to right and left sides of the horizontal moving frame as a pair to fix and detach right and left sides of the bucket; and a door opening and shutting unit(140) formed with a sheave(141) positioned at the front and the back of the bucket and connected to the wire rope, a triangle plate(142) respectively lifting along front and rear surfaces of the bucket, having the sheave at the upper end edge, and a moving rod(143) mounted at the center of each triangle plate, moveably installed at each lower door of the bucket.

Description

Bucket clamping device of carry lift type bucket crane

Figure 1a is a front view showing a bucket clamping device of the carry lift bucket crane according to the present invention, Figure 1b is a side view, Figure 1c is a plan view.

Figure 2a illustrates a state in which the bucket containing the soil of the bucket clamping device of the carry-lift bucket crane according to the present invention is raised, Figure 2b shows a state in which the fixing portion fixing the bucket, Figure 2c is a door opening and closing portion The door is opened to show the state in which the soil is loaded on the dump truck.

<Description of Symbols for Main Parts of Drawings>

100; Bucket clamping device of the carry lift type bucket crane according to the present invention

101; Bottom support frame 102; Vertical support frame

103; Horizontal support frame 104; Dump truck

105; Horizontal moving frame

110; Hoist lift 111; Electric motor

112; Reducer 113; drum

114; Wire rope 115; Drum brake

116; Band brake 117; Encoder

118a; Electric motor 118b; Wire rope

118c; Roller 120; Bucket

121; Lower door 122; Hinge shaft

130; Fixing part 131; Axis of rotation

132; Pivot bar 133; Jamming

134; Axis of rotation 135; cylinder

140; Door opening and closing portion 141; Sheave

142; Triangle plate 143; Rotating Rod

The present invention relates to a bucket clamping device of a carry lift type bucket crane, and more particularly, to a bucket clamping device of a carry lift type bucket crane that maintains parallel state without inclining the bucket to one side even if it is used for a long time or uneven load occurs. It is about.

According to the bucket clamping device of the conventional carry-lift bucket crane (Korean Utility Model Application No. 20-2004-0010382, filed April 16, 2004) filed by the present applicant, between the bucket containing the soil and the lifting device A fixing member made of a fixing rod, a rail, a cylinder, an auxiliary rod, a skip base, and the like, for fixing and supporting a bucket instead of a wire rope for a predetermined time, is disclosed. In addition, there is also disclosed a wire rope connected to the lower door in a substantially triangular form with a wire rope of the hoisting lifting portion to open and close the lower door coupled to the bottom of the bucket.

In the conventional bucket clamping device, after the soil is contained in the bucket, the hoisting lifting part operates, and when the bucket is raised to a predetermined position, the fixing member fixes and supports both sides of the bucket. Of course, the bottom of the bucket is located a dump truck for transporting the soil. In this state, when the hoisting lifting part is operated in reverse and the wire rope is lowered, the bucket itself is fixed by the fixing member, and heavy soil is located inside the bucket, so that the weight of the soil The fixed lower door opens naturally. Therefore, all the soil loaded in the bucket is transferred to the dump truck.

However, the conventional bucket clamping device is a wire rope means for connecting between the lower door and the hoisting lifting portion, the length of the wire rope is increased after long use, the lower door is not completely closed or the bucket itself is one side There is a problem of tilting a predetermined angle.

Furthermore, the conventional bucket clamping device has a problem that the bucket itself is inclined at a predetermined angle in a predetermined direction during the raising of the bucket when a large amount of soil is loaded into the predetermined area of the bucket, that is, when an uneven load occurs. Of course, if the bucket itself is inclined as described above, the lower door is also not fully opened and closed, so that the soil continues to pour a small amount to the lower portion of the bucket during the operation or the wire rope on one side is abnormally stretched.

The present invention is to overcome the above-mentioned conventional problems, an object of the present invention is to provide a bucket clamping device of a carry lift type bucket crane to maintain a parallel state without the inclination of the bucket even if a long time use or uneven load occurs have.

In order to achieve the above object, the bucket clamping device of the carry lift bucket crane according to the present invention has an electric motor installed on a horizontal moving frame, and a pair of drums connected to the electric motor are installed at the front and rear sides of the electric motor. The drums are wound around wire drums by winding wire ropes extending a predetermined length downward, and coupled to lower ends of wire ropes installed at the front and rear sides of the hoisting lifting units, and the left and right sides of the drums to hold soil. A bucket provided with a pair of lower doors to be opened and closed, a pair installed at each of the left and right sides of the horizontal moving frame to fix and separate the left and right sides of the bucket, and a sheave at the front and rear sides of the bucket. Is positioned so that the wire rope is coupled, and the sheave is coupled to an upper edge and at the same time along the front and rear surfaces of the bucket. Lee and lifting the triangular plates are respectively possible, and each of the lower door of the bucket from the center of each triangular plate, a door opening and closing the pivoting rod is installed rotatably predetermined angle.

Here, the fixing part is coupled to the lower end of the horizontal moving frame interposed therebetween, extends a predetermined length to the bottom, the lower end of the rotation bar is formed with a locking projection coupled to and separated from the side of the bucket, the lower end of the horizontal moving frame The rotary shaft is interposed therebetween, the lower end extends a predetermined length, and the lowermost end is rotatably coupled to an approximately center of the pivoting bar, thereby including a cylinder for pivoting the pivoting bar outward by a predetermined angle.

In addition, the fixing part operates only when the lower door of the bucket is opened to fix the left and right sides of the bucket, and the bucket is spaced apart from the bucket by a predetermined distance while lifting and holding the bucket.

In addition, when the left and right sides of the bucket is fixed by the fixing part, the wire rope is lowered by the hoisting lifting part, so that the sheave and the triangular plate provided at the front and rear sides of the bucket are lowered by a predetermined distance, Accordingly, the rotating rod coupled to the triangular plate is rotated and lowered by a predetermined angle, thereby lowering the lower door coupled to the rotating rod.

As described above, the bucket clamping device of the carry lift bucket crane according to the present invention includes a rotating rod coupled to a sheave, a triangular plate, and a lower door, rather than a wire rope, as a member for opening and closing the lower door. Even if it is used for a long time, the length of the rotating rod does not change, and the lower door is completely opened and closed, and the bucket itself does not occur at a predetermined angle.

In addition, the bucket clamping device according to the present invention does not incline the bucket itself in a predetermined direction when the bucket is raised or lowered even when a large amount of soil is loaded into a predetermined area of the bucket, that is, an uneven load occurs. That is, even if the sheave coupled to the wire rope of the hoisting elevating portion is coupled to the upper edge, which is approximately the center of the triangular plate, and the rotation rods are coupled to both sides as the center of gravity of the triangular plate, the triangular load is generated even if the bucket The weight is properly distributed by the plates so that the bucket itself does not tilt.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings such that those skilled in the art may easily implement the present invention.

Figure 1a is a front view showing a bucket clamping device of the carry lift bucket crane according to the present invention, Figure 1b is a side view, Figure 1c is a plan view.

As shown, the bucket clamping device 100 of the carry lift bucket crane according to the present invention includes a hoisting lifting unit 110, a bucket 120, a fixing unit 130, and a door opening and closing unit 140.

First, the hoist elevating unit 110 is disposed on an approximately plate-like horizontal moving frame 105, and an electric motor 111 is provided at an approximately center thereof, and the electric motor 111 is provided at the front and rear sides of the electric motor 111. A pair of drums 113 connected to the reducer 112 are installed at the side. In addition, a wire rope 114 is wound around each drum 113 to extend a predetermined length in a downward direction. Here, the encoder 117 is provided in the electric motor 111 and the drum 113, so that all the operations are stopped when the electric motor 111 or the drum 113 is abnormally rotated. In addition, the drum brake 115 is provided on the output side of the electric motor 111, and the band brake 116 is provided on the drum 113, so that the rotation of the electric motor 111 and the drum 113 in an emergency stops. have. In addition, another electric motor 118a is installed on the left and right sides of the horizontal moving frame 105, which is coupled to another wire rope 118b, so as to be before and after the horizontal moving frame 105. It is possible to move horizontally in the direction. That is, the horizontal moving frame 105 is horizontally moved forward and backward on the horizontal support frame 103 through the roller 118c. Moreover, this horizontal support frame 103 is provided on the vertical support frame 102, the vertical support frame 102 is installed on the bottom support frame 101. Since this configuration is almost similar to the prior art, further description will be omitted.

The bucket 120 is coupled to a lower end of each wire rope 114 installed at the front and rear of the hoisting lifting unit 110. In addition, the lower portion of the bucket 120 is provided with a pair of lower doors 121 to open and close to the left and right to accommodate the soil. That is, the lower door 121 is coupled to the bucket 120 around the hinge shaft 122.

The fixing unit 130 is installed on the left and right sides of the horizontal moving frame 105, respectively, one pair (total four), so that the left and right sides of the bucket 120 can be fixed and separated. That is, the fixing part 130 includes a rotation bar 132 which is coupled to the lower end of the horizontal moving frame 105 with the rotation shaft 131 interposed therebetween and extends a predetermined length downward. In addition, the lower end of the pivoting bar 132, the engaging projection 133 is coupled to and separated from the side of the bucket 120 is further formed. In addition, the rotating shaft 134 is interposed and coupled to the lower end of the horizontal moving frame 105, the predetermined length is extended to the lower end, the lower end of the cylinder 135 is rotatably coupled to approximately the center of the rotation bar 132 ). In this way, the fixing part 130 by the operation of the cylinder 135, the rotation bar 132 is rotated by a predetermined angle around the rotation axis 131, the locking projection of the rotation bar 132 133 may be coupled to or separated from the left and right sides of the bucket 120. In addition, the fixing unit 130 operates only when the lower door 121 of the bucket 120 is opened, thereby fixing the left and right sides of the bucket 120 and raising and lowering the bucket 120. During the containment, the bucket 120 is spaced apart or separated from the predetermined distance.

The door opening and closing portion 140 is located at the front and rear of the bucket 120, at the same time the sheave 141 to which the wire rope 114 is coupled, and the sheave 141 is coupled to the upper corner, A rotating shaft 143a on the lower plate 121 of the bucket 120 from a substantially center of the triangular plate 142 provided to move up and down a predetermined distance along the front and rear surfaces of the bucket 120. 143b includes a rotational rod 143 coupled to each other. In this way, the door opening and closing portion 140 is fixed to the left and right sides of the bucket 120 by the fixing portion 130, when the wire rope 114 is lowered by the lifting elevating portion 110, the bucket The sieve 141 and the triangular plate 142 respectively installed at the front and rear sides of the 120 are lowered together by a predetermined distance, and thus the rotation rod 143 coupled to the triangular plate 142 is also rotated by a predetermined angle and lowered. As a result, it can be seen that the lower door 121 coupled to the rotation rod 143 opens naturally.

In the figure, reference numeral 104 denotes a dump truck located under the bucket 120.

Figure 2a illustrates a state in which the bucket containing the soil of the bucket clamping device of the carry-lift bucket crane according to the present invention is raised, Figure 2b shows a state in which the fixing portion fixing the bucket, Figure 2c is a door opening and closing portion The door is opened to show the state in which the soil is loaded on the dump truck. The operation of the bucket clamping device of the carry lift bucket crane according to the present invention will be described with reference to FIGS. 2A, 2B and 2C. Here, since the bucket is moved underground by the front and rear movements of the horizontal moving frame and the hoisting lifting unit, the process of carrying soil is the same as in the related art, and a description thereof will be omitted.

First, as shown in FIG. 2A, when the bucket 120 is moved underground and soil is loaded, the bucket 120 is raised to a predetermined height by the operation of the hoist lift 110. That is, when the electric motor 111 of the hoisting lifting unit 110 is operated, the reduction gear 112 connected to the electric motor 111 is operated, and the front and rear drums 113 connected to the reduction gear 112 are also operated. ) Rotates in a predetermined direction. For example, the drum 113 rotates in the direction of winding the wire rope 114. Then, the bucket 120 coupled with the sheave 141 at the lower end of the wire rope 114 is raised to a predetermined height. Here, even if the load is generated in the bucket 120, the sheave 141 is coupled to the upper edge of the triangular plate 142, and the rotation rod 143 from approximately the center of the triangular plate 142 Through the lower door 121 is coupled through, the weight is evenly distributed so that the bucket 120 does not tilt to one side.

In addition, the rising height of the bucket 120 is simply defined by a limit switch or the like not shown. In addition, when the drum 113 is abnormally rotated due to a failure of the electric motor 111 or the reducer 112 while the bucket 120 is raised or lowered, the electric motor 111 and the drum 113 are installed. The encoder 117 detects this to operate the drum brake 115 or the band brake 116 to prevent a large accident.

On the other hand, while the bucket 120 is moving upward as described above, the fixing part 130 maintains a state in which the bucket 120 is moved at an angle toward the outside of the bucket 120 so as not to be caught by the bucket 120. That is, by operating the cylinder 135 forming the fixing part 130, the rotation bar 132 fixed to the cylinder 135 is rotated by a predetermined angle in the outward direction of the bucket 120 around the rotation axis 131. Keep it intact.

Subsequently, as shown in FIG. 2B, when the bucket 120 rises to a predetermined height, the operation of the hoisting lifting unit 110 is stopped, and then the fixing unit 130 operates. That is, by operating the cylinder 135 constituting the fixing part 130, the rotation bar 132 fixed to the cylinder 135 is rotated by a predetermined angle in the center direction of the bucket 120 around the rotation axis 131. do. At this time, the locking protrusion 133 is formed on the pivoting bar 132, so that the locking protrusion 133 is fixed to the side surface of the bucket 120. In addition, in this state, the dump truck 104 is positioned in advance below the bucket 120. Furthermore, in the state where the fixing part 130 fixes the side surface of the bucket 120 as described above, the bucket 120 does not fall even if the hoisting lifting part 110 completely stops the operation.

Finally, the lifting hoist 110 is operated again as shown in FIG. 2C. Of course, at this time, the electric motor 111 of the hoisting unit 110 rotates in the reverse direction, and thus, the drum 113 connected to the electric motor 111 through the reducer 112 also rotates in the reverse direction. Therefore, the wire rope 114 wound on the drum 113 is lowered while being released from the drum 113. Moreover, at this time, the sheave 141 coupled to the wire rope 114 and the triangular plate 142 to which the sheave 141 is coupled also fall along a front and rear surfaces of the bucket 120 by a predetermined distance. Of course, the rotation rod 143 coupled to the triangular plate 142 also rotates a predetermined angle about the rotation shafts 143a and 143b and at the same time lowers by a predetermined distance, thereby resulting in a bucket 120 coupled to the rotation rod 143. ), The lower door 121 is opened. Therefore, all the soil inside the bucket 120 is transferred to the dump truck 104, the operation of the bucket clamping device 100 of the carry lift bucket crane according to the present invention is completed.

As described above, the bucket clamping device of the carry-lift bucket crane according to the present invention is made of a rotating rod coupled to the sheave, the triangular plate and the lower door, the member for opening and closing the lower door is not a wire rope as in the prior art. Thus, even if used for a long time, the length of the rotation rod does not change, the lower door is completely opened and closed and the bucket itself does not occur a predetermined angle tilting to one side.

In addition, the bucket clamping device according to the present invention does not incline the bucket itself in a predetermined direction when the bucket is raised or lowered even when a large amount of soil is loaded into a predetermined area of the bucket, that is, an uneven load occurs. That is, even if the sheave coupled to the wire rope of the hoisting elevating portion is coupled to the upper edge, which is approximately the center of the triangular plate, and the rotation rods are coupled to both sides as the center of gravity of the triangular plate, the triangular plate is generated even if the load is generated on the bucket. The weight is distributed properly so that the bucket itself does not tilt.

What has been described above is just one embodiment for carrying out the bucket clamping device of the carry-lift bucket crane according to the present invention, the present invention is not limited to the above-described embodiment, as claimed in the following claims As described above, any person having ordinary knowledge in the field of the present invention without departing from the gist of the present invention will have the technical spirit of the present invention to the extent that various modifications can be made.

Claims (4)

An electric motor is installed on a horizontal moving frame, and a pair of drums connected to the electric motor are installed at front and rear sides of the electric motor, and each of the drums includes a hoisting lifting unit configured to extend a predetermined length downward by winding a wire rope; A bucket coupled to a lower end of each wire rope installed at the front and rear sides of the hoisting elevating unit, and having a pair of lower doors installed at a lower side thereof to open and close left and right to contain soil; A pair of fixing parts installed on the left and right sides of the horizontal frame to fix and separate the left and right sides of the bucket; And, Sheaves are positioned at the front and rear sides of the bucket, so that the wire rope is coupled, and the sheave is coupled to the upper edge, and a triangular plate is installed to allow a predetermined distance to be lifted along the front and rear surfaces of the bucket, respectively. Bucket device of the carry-lift bucket crane, characterized in that each lower door of the bucket from the center of the bucket comprises a door opening and closing portion is provided with a rotation rod rotatably at a predetermined angle. The method of claim 1, wherein the fixing portion Rotating bar is coupled to the lower end of the horizontal moving frame at the same time, the predetermined length extends to the lower portion, the lower end of the rotation bar is formed with a locking projection coupled to and separated from the side of the bucket; And, A rotary shaft is coupled to a lower end of the horizontal moving frame, and a predetermined length is extended downward, and a lower end includes a cylinder for rotatably rotating the pivot bar to an outward direction by being rotatably coupled to an approximately center of the pivot bar. Bucket clamping device of the carry-lift bucket crane, characterized in that made. The method of claim 2, wherein the fixing portion It operates only when the lower door of the bucket is opened, and fixes the left and right sides of the bucket, and the bucket of the carry lift type bucket crane being spaced apart from the bucket by a predetermined distance while lifting and holding the bucket. Clamping device. The method of claim 2, wherein the door opening and closing portion When the left and right sides of the bucket are fixed by the fixing unit, the wire rope is lowered by the hoisting lifting unit, and the sheave and the triangular plates respectively provided at the front and rear sides of the bucket are lowered by a predetermined distance. Bucket device of the carry-lift bucket crane, characterized in that the coupled rotating rod is rotated at a predetermined angle and lowered, thereby opening the lower door coupled to the rotating rod.

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