JPH0512343Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a telescoping arm that raises and lowers the rake of a dust remover, for example.

(b) Conventional technology In the case of conventional dust removers, a single non-contracting rake arm is used to raise and lower the building, which increases the height of the building by the amount of the arm's rise, which poses problems such as a significant increase in construction costs and an increase in the size of the equipment. It was hot.

Therefore, as in Utility Model Publication No. 61-31061, the first
There is a system that solves the above-mentioned problem by using a telescoping arm in which second and third pipes are combined in a relatively slidable manner.

(c) Problems that the invention aims to solve When the waterway is deep, a telescopic arm that combines the first, second, and third pipes so that they can slide relatively freely has a short length, so each pipe must be made longer. No.

Therefore, the length of the dust remover became long, making it impossible to lower the height of the dust remover, which naturally led to the problem of making the building taller.

(d) Means for Solving the Problems In order to solve the above problems, the present invention makes it possible to relatively slide the first, second, and third pipes using grooved materials at least on the side other than the smallest diameter side. When the second pipe of this telescopic arm is retracted and slid in the direction of the first pipe, the third pipe also slides in the same direction, and the second pipe is moved in the same direction as the first pipe. In a telescopic arm consisting of a first drive device which is interlocked so that when the third pipe is extended and slid in the opposite direction, the third pipe also slides in the same direction. An endless traveling body with a drive function extending over the entire length is provided, the first pipe is supported by the endless traveling body, and a rack provided parallel to the endless traveling body is provided on the drive shaft of the first drive device. It is constructed by meshing a certain pinion.

(E) Effect When the second pipe and the third pipe are slid in the extension direction, the first pipe also slides in the extension direction.

Furthermore, when the second pipe and the third pipe are slid in the contraction direction, the first pipe also slides in the contraction direction.

Furthermore, when the endless traveling body is run in one direction and the first pipe is moved in the upward direction, the drive shaft of the first drive device is driven in one direction via the pinion that is easily engaged with the first pipe. The first driving device acts on the pipe so that the second pipe and the third pipe contract.

Furthermore, when the endless traveling body is run in the other direction, the drive shaft is driven in the other direction to cause the first drive device to act, and the second pipe and the third pipe are moved to the first pipe.
Extend the pipe.

(f) Examples Practical examples of the present invention will be explained below based on the attached drawings.

As shown in the drawing, the telescopic arm 1 is made up of first, second, and third pipes 11, 12, and 13, and these pipes 11, 12, and 13 are assembled so as to be relatively slidable, and have a minimum diameter. The remaining first and second pipes 11 and 12 except for the third pipe 13 are H-shaped,
Groove-shaped materials such as channel type are used.

2 is a first driving device for extending and contracting the telescopic arm 1. As shown in FIG.

The above-mentioned first drive device 2 has sprockets 14 and 1 at the end and tip of the first pipe 11 in the case shown in the figure.
An endless chain 16 extends between the sprockets 14 and 15, and a drive shaft 17 of the sprocket 14 located on the upper side is driven.

As the drive shaft 17 is driven in the forward direction, the first
The end of the second pipe 12 is fixed to one parallel side of the chain 16 running toward the end of the pipe 11.

Further, sprockets 18 and 19 are pivotally supported at the end and tip of the second pipe 12, and the sprocket 1
8 and 19, and the second pipe 1 is placed on one parallel side of the chain 20 so that when the second pipe 12 slides in the contraction direction, the third pipe 13 also slides in the same direction.
2, and the end of a third pipe 13 is fixed to the remaining one. That is, one parallel side of the chain 20 is fixed to the arm 21 protruding from the end of the second pipe 12, and as the second pipe 12 slides in the contraction direction, the third pipe 13 is also slid in the same direction. The remaining parallel side of the chain 20 is fixed to an arm 22 protruding from the end of the third pipe 13.

In the illustrated case, the arm 1 includes two sets of the first pipe 11, the second pipe 12, and the third pipe 13, and the arms 24, 21, 22,
25 to connect each end to the third pipe 13
Although a dust remover is shown in which a rake claw 27 is provided at the tip of the bar screen 26 to engage with the bar screen 26, it may be used for other purposes as well.

28 is an endless running body arranged upward from the outside of the first pipe 11, and the first pipe 11 is fixed to this endless running body 28 (in the illustrated case, an arm 24 is attached). .

A rack 29 is laid parallel to the endless running body 28, and a pinion 30 provided on the drive shaft 17 is engaged with the rack 29.

With the above configuration, when the motor 31 causes the endless traveling body 28 to travel in one direction and move the first pipe 11 in the upward direction, the drive shaft 1 is moved through the pinion 30 meshing with the rack 29.
7 is driven and the second pipe 11 is connected to the first pipe 11.
The pipe 12 and the third pipe 13 are contracted and slid.

Furthermore, when the motor 31 causes the endless traveling body 28 to travel in the other direction and move the first pipe 11 in the downward direction, the second pipe 12 and the third pipe 13 extend and slide relative to the first pipe 11. .

In the figure, 32 is a balance weight provided on the endless traveling body 28, 33 is a support shaft to which the end of the first pipe 11 is rotatably attached, and 34 is an arm so that the rake claw 36 is removed from the bar screen 35 when the arm 1 is extended. 11 is an extrusion device that tilts.

(G) Effect As described above, according to the telescopic arm of the present invention, the point of movement of the tip of the third pipe can be significantly increased by sliding the first pipe, so that it can be used even when the waterway is deep, for example. 3rd to the bottom of the waterway
The tip of the pipe can be reached.

Therefore, the length of the aircraft can be shortened and the amount of movement can be increased, and problems such as the need to make the building higher can be solved.

In addition, the first pipe is slid up and down by the endless running body, and a pinion provided on the drive shaft of the first pipe attached to the endless running body is engaged with a rack parallel to the endless running body. This has the advantage that the power required to extend and retract the arm can be significantly reduced.

[Brief explanation of the drawing]

FIG. 1 is a front view of a telescoping arm according to the present invention, FIG. 2 is a side view of the same, and FIG. 3 is an enlarged side view showing essential parts of the same. 1...Telescopic arm, 2...First drive device, 1
1,12,13...pipe, 14,15...sprocket, 16...chain, 17...motor,
18, 19... Sprocket, 20... Endless chain, 21... Arm, 28... Endless running body, 29... Rack, 30... Pinion, 31...
…motor.

Claims (1)

[Scope of utility model registration request] A telescoping arm in which a first, second, and third pipe using a grooved material on at least the side other than the smallest diameter side is combined in a relatively slidable manner, and the second pipe of this telescoping arm is moved in the direction of the first pipe. The third pipe is interlocked so that when the second pipe is slid for contraction, the third pipe also slides in the same direction, and when the second pipe is extended and slid in the opposite direction of the first pipe, the third pipe also slides in the same direction. In the telescopic arm consisting of one drive device, an endless running body with a drive function extending in the opposite direction of the second pipe is provided outside the first pipe, and the first pipe is connected to the endless running body. A telescopic arm, characterized in that a pinion provided on a drive shaft of the first drive device is engaged with a rack supported and provided parallel to the endless traveling body.