JPH0629231Y2 - Turning device of bucket conveyor body in excavator - Google Patents

Description

[Detailed Description of the Invention] "Industrial application field" The present invention is a bucket conveyor main body of an excavator used for digging a groove for constructing a retaining wall for earth retaining or a groove for underground burying of a cable. The present invention relates to a turning device.

"Prior art and its problems" Conventionally, in the excavator equipped with a bucket conveyor body having a thin flat shape and having a considerable length in the longitudinal direction, which is used for the seed retaining method, a boom of a crane truck is generally used. The bucket conveyor body can be rotated with respect to a crane vehicle through the rotation of a leader attached so that it can be rotated approximately 180 °.
The trencher mechanism of No. 72 has a similar structure. Therefore, when the main body of the bucket conveyor reaches the corner, corner, etc., the leader of the crane truck is swung one by one. It is accompanied. In view of such a situation, there has been a demand for a swing device for a bucket conveyor main body, which is capable of rotating the bucket conveyor main body while the leader is stopped and which can be easily rotated.

[Means for Solving Problems] Therefore, the present invention is configured so that the bucket conveyor main body can be swung by the leader via the support member, and the swiveling can be easily performed with a small area. The gist of this is that it is equipped between a support member provided with a holding piece such as a gripping ring that is held by a guide of a leader of a mobile crane, and a frame body supported by this support member via a connecting member. A bucket conveyor main body provided with a large number of buckets attached at appropriate intervals to the chain, and a turning member provided between the support member and the bucket conveyor main body,
A bucket conveyor main body swivel device in an excavator, wherein the bucket conveyor main body is swivelable with respect to a support member through the operation of the swivel member.

[Operation] Next, the operation of the present invention will be described. For example, when the bucket conveyor body reaches a corner, the supporting member faces the crane vehicle shown in FIG. 2, and the arm of the supporting member has a swinging angle. With the bucket conveyor body facing the so-called crane vehicle in the central position (the crane vehicle and the leader remain as they are. The following description will be made in a similar state) to the left ( When attempting to turn the bucket conveyor main body approximately 45 ° in the counterclockwise direction in the drawing, when the cylinder is operated and the piston rod thereof is advanced, the connecting plate advances. As a result, the arm of the support member swings leftward in FIG. 2 about the central axis and pivots about 45 ° with respect to the center, and at the same time, the connecting member provided below pivots about the central axis as well (see FIG. 2 is the state of X shown by the one-dot chain line in FIG. As a result, the upper and lower support members are displaced. However, since the support member is fixedly supported by the guide of the mobile crane, it causes a reaction and causes the bucket conveyor main body to turn leftward with respect to the mobile crane. Further, in order to return the bucket conveyor body to the initial state shown by the solid line in Fig. 2 in which the crane vehicle faces the crane vehicle, the cylinder is operated and the piston rod is retracted, whereby the connecting plate retracts. As a result, the arm of the support member swings rightward (clockwise in the drawing) in FIG. 2 about the central axis and returns to the center position, and at the same time, the connecting member provided below pivots about the central axis. The upper and lower support members are displaced to the above-mentioned initial state. Therefore, the bucket conveyor body faces the crane vehicle as in the first state described above. By the way, since the support member is fixedly supported by the guide of the mobile crane, it causes a reaction and the main body of the bucket conveyor turns to the right with respect to the mobile crane. In the above, the case where the bucket conveyor body turns to the right with respect to the crane vehicle has been described. Conversely, when the bucket conveyor body turns to the left with respect to the crane vehicle, the piston rod of the cylinder moves backward. However, this causes the connecting plate to move backward, which is the reverse of the above-mentioned operating state, but since the movement is essentially the same, its explanation is omitted.
By operating in this manner, the bucket conveyor main body can be easily swiveled with respect to the crane vehicle even at a corner or the like.

[Embodiment] The drawings show an embodiment of the present invention, in which 1 is a crane truck, 2 is a boom of a crane truck 2, and 3 is a boom 2.
A reader attached so that it can swivel approximately 180 °
Reference numeral a is a guide of the leader, and 4 is a pulley attached to the upper end of the leader 3, and a bucket conveyor body 6 having a flat shape and having a considerable length in the longitudinal direction is vertically movable via a rope 5 on the pulley 4. It is suspended. The bucket conveyor body 6 is a frame plate 7 composed of two side plates 7a and 7b.
Although not shown, a chain stretched between a gear provided at an upper portion of the frame plate 7 and a chain guide provided at a lower portion of the frame plate, and a plurality of buckets attached to the chain at appropriate intervals. The bucket moves vertically through the normal rotation (clockwise direction) or reverse rotation (counterclockwise direction) of the chain. The vertical movement of the bucket excavates earth and sand and conveys the excavated earth and sand. Reference numeral 10 denotes a support member having a clasping piece 11 such as a grip ring on the rear surface (right side in FIG. 3), and two brackets 12, on the front surface (left side in FIG. 3) of the support member 10. 12a is provided in the horizontal direction, and an arm 13 is provided between the two brackets 12 and 12a in the same direction. The two brackets 12 and 12a of the support member 10 are the two brackets 8 provided on the bucket conveyor main body 6,
8a, the central shaft 14 is attached to the connecting portion, and the bucket conveyor main body 6 can be rotated about 90 ° with respect to the support member 10. The two brackets 8, 8a, 12, 12a and the central shaft 14 form a connecting member A. The connecting member A is an example, and a structure that operates in the same manner is included in the scope of the invention. It is a thing. Further, a swiveling member B is attached between the supporting member 10 and the bucket conveyor main body 6, and the swiveling member B swings around the central shaft 14 as the supporting member 10.
The arm body 13 provided at the end, a connecting body 15 whose one end is pivotally attached to the tip of the arm body 13, and a bucket conveyor body 6
And a cylinder 16 having one end attached to the piston 16. A piston rod 16a of the cylinder 16 is connected to the connecting plate 15. By moving the piston rod 16a forward and backward in this manner, the arm body 13 is displaced to the right or left as shown in FIG. 2, and the bucket conveyor body 6 is turned within a range of about 90 °. .
The swiveling member B is an example, and a structure that performs the same operation is included in the scope of the present invention. In the figure, 17 is a lower support member, 18 is its clasping piece, and 19 and 19a are two brackets 9 and 9a provided on the bucket conveyor main body 6.
And the central shaft 20 is attached to the connecting portion.
Can turn about 90 °. The brackets 9 and 9
A connecting member A is formed by a, 19, 19a and the central shaft 20.

Next, the operation state of the present invention will be described. For example, when the bucket conveyor main body 6 reaches a corner, the crane vehicle 1 shown in FIG.
In contrast, the support members 10 and 17 face each other, and the arm 13 of the support member 10 is at the center position of the swing angle, so that the bucket conveyor body 6 faces the so-called crane vehicle 1. At this time (the crane vehicle 1 and the leader 3a are left as they are. The same state will be described below) When the bucket conveyor main body 6 is to be turned to the left (counterclockwise in the drawing) by about 45 ° When the cylinder 16 is operated and the piston rod 16a thereof is moved forward, the connecting plate 15 moves forward. Thereby, the support member 1
The arm 13 of 0 swings leftward in FIG. 2 about the center axis 14 and swings about 45 ° with respect to the center of rotation. At the same time, the connecting member A provided below swings about the center axis 20 as well ( This is the X state indicated by the alternate long and short dash line in FIG. As a result, the upper and lower support members 10 and 17 are displaced.
However, since the support members 10 and 17 are fixedly supported by the guide 3a of the crane vehicle 1, they react and the bucket conveyor body 6 turns to the left with respect to the crane vehicle 1. Further, in order to return the bucket conveyor body 6 to the crane vehicle 1 in the opposite state to the initial state shown by the solid line in FIG. 2, the cylinder 16 is operated and the piston rod 16a thereof is retracted, whereby the connecting plate 15 is retracted. To do. As a result, the arm 13 of the support member 10 is moved to the central axis 14
At the same time as returning to the swing center position in the right direction (clockwise direction in the drawing) in FIG. 2, the connecting member A provided below pivots about the central shaft 20 in the same manner, and the upper and lower support members 1
0 and 17 are displaced to the above-mentioned initial state. Therefore, as in the above-mentioned first state, the bucket conveyor main body 6 faces the crane vehicle 1. By the way, the support members 10 and 17 are the guides 3a of the mobile crane 1.
Since it is fixedly supported on the bucket conveyor main body 6, the bucket conveyor main body 6 turns rightward with respect to the crane vehicle 1. Furthermore, for example, the bucket conveyor body 6 reaches the corner, the supporting members 10 and 17 face the crane vehicle 1 shown by the solid line in FIG. 2, and the arm 13 of the supporting member 10 is at the center position of the swing angle. In an initial state where the bucket conveyor main body 6 faces the so-called crane vehicle 1 in a certain state, when the bucket conveyor main body 6 is to be turned rightward by about 45 °, the cylinder 16
Is operated to move the piston rod 16a forward,
The connecting plate 15 moves forward. Thereby, the support members 10 and 17
When the arm 13 of FIG. 2 swings rightward in FIG. 2 about the central axis 14 and pivots about 45 °, the connecting member A provided below simultaneously pivots about the central axis 20 (FIG. 2). The Y state indicated by the two-dot chain line). As a result, the upper and lower support members 10 and 17 are displaced. However, the support members 10 and 17 are not included in the guide 3 of the mobile crane 1.
Since it is fixedly supported by a, it reacts and the bucket conveyor body 6 turns to the right with respect to the crane vehicle 1. Further, in order to return the bucket conveyor body 6 to the crane vehicle 1 in the opposite state to the initial state shown by the solid line in FIG. 2, the cylinder 16 is operated and the piston rod 16a thereof is retracted, whereby the connecting plate 15 is retracted. To do. As a result, the arm body 13 of the support member 10 swings leftward in FIG. 2 around the central axis 14 and returns to the central position, and at the same time, the connecting member A provided below pivots about the central axis 20 in the same manner. The upper and lower support members 10 and 17 are displaced to the above-mentioned initial state. Therefore, as in the above-mentioned first state, the bucket conveyor main body 6 faces the crane vehicle 1. By the way, the support member 10,
Since 17 is fixedly supported by the guide 3a of the crane vehicle 1, it reacts and the bucket conveyor main body 6 turns to the left with respect to the crane vehicle 1. By operating in this way, the bucket conveyor main body 6 can be easily turned with respect to the crane vehicle even at a corner or the like.

[Advantage of the Invention] As described in detail above, the present invention provides the upper and lower connecting members and the swiveling member between the support member held by the guide of the leader and the bucket conveyor main body, and the bucket member with respect to the support member. Since the conveyor main body can be swung freely, there is an effect that the bucket conveyor main body can be easily and easily swung while the crane vehicle and the leader are kept as they are. Also, the turning range is very narrow and the workability is good. Further, since the angle is changed by the connecting member and the turning member, there are few malfunctions and there is certainty.

[Brief description of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a front view of the whole, Fig. 2 is an enlarged transverse sectional view of a swivel mechanism, and Fig. 3 is a longitudinal sectional view of Fig. 2 and Fig. 4. FIG. 4 is an enlarged vertical sectional view of a lower turning mechanism. 1 ... mobile crane, 2 ... boom, 3 ... leader, 4 ... pulley,
6 ... Bucket conveyor main body, 7 ... Frame body, 8, 8a, 9,
9a, 12, 12a, 19, 19a ... Bracket, 1
0, 17 ... Supporting member, 11, 18 ... Clamping piece, 13 ... Arm, 14, 20 ... Central shaft, 15 ... Connecting plate, 16 ... Cylinder, A ... Connecting member, B ... Turning member

Claims (1)

[Scope of utility model registration request] 1. A support member equipped with a holding piece such as a grip ring that is held by a guide of a leader of a mobile crane, and a frame member mounted on the support member via a connecting member. The bucket conveyor main body is provided with a large number of buckets mounted at appropriate intervals on the chain, and a swing member provided between the support member and the bucket conveyor main body. A swinging device for a bucket conveyor main body in an excavator, wherein the bucket conveyor main body is rotatable with respect to a support member.