JP2793959B2 - Earth removal equipment for construction machinery - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for connecting an earth removal blade or earth removal blade mounted on a construction machine such as a power shovel to a construction machine body.

[0002]

2. Description of the Related Art In a conventional construction machine, an earth discharging blade is fixed to a drive arm that swings on a construction machine body by welding.

[0003]

According to the present invention, it is possible to easily replace the blade with various kinds of blades according to the operation of the blade or according to the condition of the ground. The purpose is to provide a connection structure.

[0004]

According to the present invention, an earth removal device for a construction machine includes a drive arm that swings on the construction machine body, and a driving arm that is positioned with respect to the construction machine body by the drive arm. Move on the ground with the movement of the construction machine body, move the earth and sand on the ground, and with the earth removal blade, the earth removal blade is contactably and separably engaged with the drive arm,
And a separating device that keeps the positional relationship and the posture relationship between the drive arm and the earth discharging blade unchanged during the movement of the earth and sand. The earth removal device for construction machines further has a plurality of separation devices, the positions of the plurality of separation devices with respect to the earth removal blade are different from each other, and the positional relationship between the drive arm and the earth removal blade is one of the separation devices. The separation from the contact engagement between the drive arm and the earth removal blade may be changed with the formation of the contact engagement between the drive arm and the earth removal blade in another separation device. The separation device has a pin fixed to one of the driving arm and the discharging blade, and a hole provided on the other of the driving arm and the discharging blade. The positional relationship with the soil blade may be maintained. In this case, at least one of the pin and the hole has a cylindrical surface extending substantially in the traveling direction of the construction machine main body (particularly preferably, substantially in the straight traveling direction of the construction machine main body or in the arrangement direction of the tracks of the track chain). You may.

[0005]

According to the present invention, the separating device makes the discharging blade contact with the driving arm so as to be separable, and, during the movement of the earth and sand, moves between the driving arm and the discharging blade.
Since the positional relationship and the posture relationship are kept unchanged, without removing the drive arm from the construction machine body, and without removing the actuator for positioning the drive arm with respect to the construction machine body from the drive arm or the construction machine body,
It is possible to easily replace the discharging blade. Furthermore, no separate means for maintaining the position or attitude of the earth removal blade with respect to the drive arm is required. Therefore, it is possible to replace the driving blade by separating the discharging blade only from the driving arm by separating the contact engagement between the driving arm and the discharging blade into a re-contactable engagement, and removing the driving blade from the driving arm. When the earth removal blade is fixed by welding, it is necessary to disconnect the drive arm and earth removal blade or remove the drive arm and the actuator that positions the drive arm with respect to the construction machine body from the machine body when replacing the earth removal blade. As compared with the prior art described above, the replacement of the earth discharging blade is easier. It has a plurality of separating devices, the positions of the plurality of separating devices with respect to the discharging blade are different from each other, and the positional relationship between the driving arm and the discharging blade is between the driving arm and the discharging blade in one separating device. From the disengagement of the contact engagement with the formation of the contact engagement between the drive arm and the earth removal blade in another separating device, by one earth removal blade,
The positional relationship or the attitude relationship between the earth removal blade and the construction machine main body can be variously changed. The separation device has a pin fixed to one of the drive arm and the earth removal blade, and a hole provided on the other of the drive arm and the earth removal blade. If the positional relationship between the driving arm and the discharging blade is maintained, the positional relationship between the drive arm and the discharging blade is accurately set. In this case, if each of the pin and the hole has a cylindrical surface extending substantially in the traveling direction of the construction machine main body (substantially in the straight traveling direction of the construction machine main body or in the arrangement direction of the tracks of the track chain), the pin and the hole are formed. In particular, they can be easily fitted.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, an earth removal device according to the present invention is mounted on a traveling body 1 running on a truck chain, for example, as a construction machine body. A revolving superstructure 2 is mounted on the traveling superstructure 1. The drive arm 5 that can swing with respect to the traveling body 1 in an angle range including a position substantially parallel to the track arrangement direction of the track chain of the traveling body 1 (the traveling direction of the traveling body) has, at the tip thereof, an earth removal blade 14. Is attached.

As shown in FIG. 2, the drive arm 5 and the earth discharging blade 14 are fixed to plates 11 and 1 respectively fixed thereto.
2, through the mounting holes 7 so as to constitute a separating device.
It is engaged and fixed by a screw (not shown) inserted into and tightened inside. Swingable drive arm 5
Is driven by the hydraulic cylinder (not shown) via the swing joint 6 with respect to the traveling body 1. The plate 11 is provided with two sets of places where the plate 12 is mounted and mounting holes 7 corresponding thereto, so that the position of the earth discharging blade 14 in the width direction of the traveling body 1 can be changed as necessary.

As shown in FIG. 3, a combination of a pin 9 and a hole 8 to be fitted to each other is provided at the tip of the discharging blade 14 and the drive arm 5, and the discharging blade 14
It is effective to make the positional relationship between the motor and the drive arm 5 constant. The tip of the pin 9 has a tapered shape to facilitate insertion into the hole 8.

As shown in FIG. 4, the driving arm 5 and the discharging blade 14 are fitted with the tip of the driving arm 5 between brackets 13 fixed to the discharging blade 14.
By fitting a shaft (not shown) into the hole 10 provided in the bracket 13 and the drive arm 5, the shaft may be brought into contact engagement and fixed so as to constitute a separating device. Two sets of spaces are provided between the brackets 13 into which the tips of the drive arms 5 are fitted. Depending on which of the two sets the tips of the drive arms 5 fit into, the width of the earth discharging blade 14 in the width direction of the traveling body 1 is determined. The position can be changed. Also in this case, as shown in FIG. 3, a combination of the pin 9 and the hole 8 fitted to each other is provided at the tip of the discharging blade 14 and the drive arm 5, and the combination of the pin 9 and the hole 8 and the drive arm The drive arm 5 and the earth removal blade 14 are in contact engagement with each other by the fitting between the tip of the drive arm 5 and the bracket 13 and the connection between the tip of the drive arm 5 and the bracket 13 by a shaft fitted into a hole 10 (not shown). It is made to be fixed.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an example of a construction machine to which an earth removal device of the present invention is mounted.

FIG. 2 is a schematic perspective view showing an example of an earth removal device of the present invention, particularly an example of the separation device.

FIG. 3 is a partial cross-sectional view showing a part of a separation device of the earth removal device of the present invention.

FIG. 4 is a schematic perspective view showing another example of the earth discharging device of the present invention, particularly another example of the separating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Running body 5 Drive arm 8 Hole 9 Pin 14 Discharge blade

Claims (4)

(57) [Claims] A drive arm that swings on the construction machine body, and moves on the ground with the movement of the construction machine body while being positioned with respect to the construction machine body by the drive arm;
An earth removal blade for moving earth and sand on the ground; a separable contact engagement between the earth removal blade and the drive arm; and a position between the drive arm and the earth removal blade during earth movement. Discharge device for construction machinery, comprising: a separation device that keeps a relationship and a posture relationship unchanged. 2. The apparatus according to claim 1, further comprising a plurality of separating devices, wherein the positions of the plurality of separating devices with respect to the discharging blade are different from each other, and a positional relationship between the driving arm and the discharging blade is determined by a driving arm and a discharging blade in one separating device. Changing with the formation of contact engagement between the drive arm and the earth removal blade in another separation device from the separation of the contact engagement with the soil blade,
An earth removal device for a construction machine according to claim 1. 3. The separation device has a pin fixed to one of the driving arm and the discharging blade, and a hole provided on the other of the driving arm and the discharging blade. The earth removal device for a construction machine according to claim 1, wherein a positional relationship between the drive arm and the earth removal blade is maintained. 4. At least one of the pin and the hole has a cylindrical surface extending substantially in the direction of travel of the construction machine body.
Equipment for construction machinery.