JP4321752B2 - Self-propelled construction machinery - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of self-propelled construction machines such as self-propelled crushers and asphalt finishers.
[0002]
[Prior art]
In general, in self- propelled construction machines such as self- propelled crushers, asphalt finishers, and hydraulic excavators, maintenance work such as inspection, maintenance, repair, parts replacement, and cleaning of various equipment mounted on the construction machine is performed. Although it is necessary to carry out such work regularly or irregularly, the operator may not be able to access from the ground especially when the construction machine is large. Walks, steps, etc.) are provided.
As such a scaffold, one in which a catwalk is provided on the left and right side portions of the body frame so as to protrude outward from the left and right widths of the body is known (for example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Unexamined Patent Publication No. 2000-160599 (FIG. 5)
[0004]
[Problems to be solved by the invention]
By the way, the self-propelled construction machine is usually mounted on a transport vehicle such as a truck until the site where the work is performed, and the scaffold is provided in a state of protruding from the left and right widths of the airframe like the conventional one. If this is the case, transportation may be obstructed. In such a case, the scaffold will be removed and transported. And although a scaffold is attached at a work site, this removal and attachment work are troublesome and time-consuming. In addition, if the scaffold is long, the range in which maintenance work can be performed becomes wide, but the long scaffold is heavy, and there is a problem that the removal and attachment work becomes heavy labor, and these are the problems to be solved by the present invention. there were.
[0005]
[Means for Solving the Problems]
The present invention has been created in order to solve these problems in view of the above circumstances, and is a self-propelled vehicle in which various devices are mounted on a base frame attached to a crawler-type traveling body. the expression construction machinery, inspection, maintenance, set the scaffolding to do the work such as repair only, and work attitude that projects the scaffold, outward from the left and right width of the fuselage, almost fit the retracted position to the left and right width of the fuselage When the scaffold is provided so as to be swingable , the shaft is positioned above the crawler type traveling body at the tip of the support bracket projecting outward from the base frame in the left-right direction. It is supported by a pin shaft that faces in the vertical direction so that it can swing freely, and the step surface for placing the foot of the scaffold is in the horizontal direction and is positioned above the crawler-type traveling body so that it is outside the body width. Working posture and crawler type traveling body The platform can be swung to the stowed posture stored in the left and right width of the machine body, and the working posture of the scaffolding is made to vary the swing angle with the step surface facing the horizontal direction. The scaffold is fixed to each posture by fixing the stay provided on the base frame to the plurality of work posture locking holes and the storage posture locking holes provided on the scaffold. A self-propelled construction machine characterized by being configured to be freely separable and locked .
And by doing in this way, the step is not disturbed during transportation or running by setting the scaffold when not needed to be stored, and the troublesome work of attaching and detaching the scaffold is also unnecessary. Excellent in practicality.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a self-propelled crusher. The self-propelled crusher 1 is attached to a crawler-type traveling body 2 from a jaw crusher or the like at a substantially central portion in the front-rear direction of a base frame 3. A crushing device 4 is placed. A hopper 5 into which an object to be crushed, such as a concrete lump, is placed is arranged on the upper rear side of the crushing device 4, and a material to be crushed in the hopper 5 is disposed below the hopper 5 in the crushing device 4. A vibration feeder 6 for introduction into the inlet 4a is arranged. The vibration feeder 6 is a so-called grizzly feeder, has a sawtooth plate 6a on the front half side of the bottom surface portion, and sequentially conveys the objects to be crushed put into the hopper 5 to the crushing device 4 side. At the same time, a small concrete lump, earth and sand, etc. that do not need to be crushed are dropped downward from the gap between the sawtooth plates 6a. And the fallen object is configured to be carried out to the left and right outside of the self-propelled crusher 1 by a side conveyor 8 arranged in a state of projecting left and right from the front half side of the vibration feeder 6. ing.
[0007]
On the other hand, a fuel tank 9, a hydraulic oil tank 10, a control unit 11 and the like are disposed in front of the crushing device 4, and a power chamber 12 is further disposed in front of the crushing device 4. Engine-related equipment such as engines and filters that are not used, and various equipment such as hydraulic pumps, radiators, and oil coolers are housed. And the upper surface part and the left and right side parts of the power chamber 12 are covered with an openable / closable engine cover 12a and a side cover 12b, and the engine cover 12a and the side cover 12b are opened to be housed in the power chamber 12. It is possible to perform maintenance work such as inspection, repair, replacement of parts, and cleaning of equipment. In addition, the carry-out conveyor 13 for discharging the processed material crushed by the crushing device 4 from the lower side of the crushing device 4 to the lower side of the power chamber 12 and further protruding toward the upper front of the machine body is arranged. Has been.
In the figure, reference numeral 14 denotes a magnetic separator disposed above the middle part of the carry-out conveyor 13, and the magnetic separator 14 is magnetically attached to a metal material such as a reinforcing bar contained in a concrete lump with a magnet. It is configured to release.
[0008]
Further, reference numeral 15 denotes left and right track frames constituting the traveling body 2, and the left and right track frames 15 are integrally attached to and supported by the base frame 3. A drive sprocket 16 and an idler 17 are supported on the crawler, and a crawler 18 is suspended between the drive sprocket 16 and the idler 17.
[0009]
On the other hand, 19 is a support bracket for pivotally supporting a left and right step 20 to be described later. The support bracket 19 is below the left and right sides of the power chamber 12 and at the front end of the crawler 18. Is fixed to the front end portion of the base frame 3 so as to project outward from the left and right outer surfaces in the left-right direction . The support bracket 19 is provided with upper and lower plates 19a having a substantially triangular shape in plan view, and a step 20 is provided between the tip portions of the upper and lower plates 19a via a pin shaft 21 in which the axis is directed in the vertical direction. The base end side is pivotably supported.
[0010]
The step 20 corresponds to a scaffold of the present invention, and is a step surface 20a positioned above the upper surface of the crawler type traveling body 2 in a horizontal direction so that the operator can place both feet. have. Moreover, a substantially saddle-shaped footrest 20b that hangs downward is formed at the tip of the step 20, and the step surface 20a can be easily accessed from the ground by placing the foot on the footrest 20b. ing.
[0011]
Then, in step 20, by swinging about the pin shaft 21 as a support shaft, the step surface 20a is laterally outward from the left and right side edges of the power chamber 12 in plan view with the step surface 20a facing in the horizontal direction. A first working posture (shown by a solid line in FIGS. 1 to 4 and shown in FIGS. 5 and 7B) and a step surface 20a from the left and right side edges of the power chamber 12 A second working posture (indicated by a two-dot chain line in FIG. 4 and shown in FIG. 7C) projecting in an inclined shape toward the rear left and right outwards, and the entire step 20 is stored below the power chamber 12. It is configured so as to be able to swing and change into a storage posture that does not protrude outwardly (shown by a one-dot chain line in FIGS. 1, 3, and 4 and also shown in FIG. 7A).
[0012]
Further, in step 20, when the step 20 is in the first working position and the second working position, a first working position locking hole 20c for releasably locking a stay 22 described later, A stop hole 20d is formed. Further, a locking piece 20e protrudes from the base end side of the step 20, and the stay 22 is detachably locked to the distal end portion of the locking piece 20e when the step 20 is in the storage position. A storage posture locking hole 20f is formed.
[0013]
The stay 22 has a rod-like shape in which both end sides are bent in a bowl shape, and the base end side of the stay 22 is formed in a support piece 23 fixed to the left and right outer surfaces of the base frame 3. The mounting hole 23a is inserted through the mounting hole 23a so as to be movable up and down and rotatable around the axis. Further, the distal end side of the stay 22 can be removably inserted into the locking holes 20c, 20d, and 20f of the step 20 described above. Thus, the stay 22 is configured to be detachably locked in the locking holes 20c, 20d, and 20f by moving up and down, and the step 20 is set to the first working posture, the second working posture, In the state of the storage posture, the stay 22 is engaged with the first work posture lock hole 20c, the second work posture lock hole 20d, and the storage posture lock hole 20f of the step 20 on the distal end side of the stay 22. The step 20 can be fixed in each of the above postures by being respectively locked in the holes.
In the figure, reference numeral 24 denotes a handle provided in a state of hanging from the lower ends of the left and right side portions of the power chamber 12, and the handle 24 is configured to be gripped by an operator when placed on the step 20.
[0014]
In the structure configured as described above, on the left and right outer surfaces of the base frame 3 of the self-propelled crusher 1 are located below the left and right sides of the power chamber 12 and above the front end of the crawler 18. The step 20 on which the operator can be mounted is attached. The step 20 has a first working posture in which the step surface 20a protrudes from the left and right side edges of the power chamber 12 to the left and right outwards at a substantially right angle. And a second working posture in which the step surface 20a protrudes in an inclined manner from the left and right side edges of the power chamber 12 toward the rear left and right outwards, and the entire step 20 is stored below the power chamber 12 and protrudes outward from the fuselage. It is provided so that it can be swung freely in the storage position that does not. The step 20 in each posture is fixed to each posture by locking the stay 22 in the locking holes 20c, 20d, and 20f.
[0015]
Thus, in the case of performing maintenance work such as inspection, repair, parts replacement, cleaning, etc., of equipment devices disposed on the left and right side portions of the power chamber 12 among the device devices housed in the power chamber 12, the power chamber Although it will be performed by opening the side cover 12b for covering the left and right sides of the 12, in this case, by resting thereon with the step 20 in the first working position or the second working position, the power chamber 12 It is possible to easily perform maintenance work on the equipment devices arranged on the left and right sides of the device. At this time, when performing maintenance work of the device arranged on the front side of the power chamber 12, the first work posture is set. When performing maintenance work on the device arranged on the rear side, the second work posture is set. In other words, by making the swing angle of step 20 different, even if step 20 is large enough to allow the operator to place both feet, a wide maintenance work area can be covered. Can be avoided.
In the present embodiment, the fixed positions of the work posture in step 20 are the first and second positions. However, the position is not limited to this, and the number is appropriately set according to the work range in which maintenance is performed. The position can be set as appropriate. Further, in the present embodiment, in order to make the members constituting the left and right steps 20 common, the first working posture locking holes 20c are provided at two symmetrical positions, and either one of them is formed. The first working posture locking hole 20c is set to be used.
[0016]
On the other hand, when step 20 is unnecessary, the step 20 is placed in the stowed position so that the step 20 is stowed under the power chamber 12 and does not protrude outward from the machine body. As a result, the step 20 does not get in the way when the self-propelled crusher 1 is transported or traveled, and the troublesome work of attaching / detaching a scaffold such as a catwalk is not required as in the prior art. Excellent in properties.
[Brief description of the drawings]
FIG. 1 is a side view of a self-propelled crusher.
FIG. 2 is a plan view of a self-propelled crusher.
FIG. 3 is a front view of a self-propelled crusher.
FIG. 4 is a plan view showing an attachment state of steps.
FIG. 5 is a front view showing a mounting state of steps.
6 is an enlarged view of a portion X in FIG. 5;
FIGS. 7A, 7B, and 7C are views showing a step storing posture, a first working posture, and a second working posture, respectively.
[Explanation of symbols]
1 Self-propelled crusher 20 Step 21 Pin shaft 22 Stay

Claims (1)

The various devices on a base frame that is attached to the crawler-type traveling body to self-propelled construction machinery made by placing, inspection, maintenance, set the scaffolding to do the work such as repair only, the scaffold, the left and right of the fuselage The scaffolding was projected from the base frame toward the outside in the left-right direction when the work posture that protrudes outward from the width and the storage posture that fits substantially within the left-right width of the fuselage were swingably provided . At the tip of the support bracket, the step surface for placing the foot of the scaffold is supported in a horizontal direction by swingably supporting via a pin shaft whose axis is oriented in the vertical direction while being positioned above the crawler type traveling body. A working posture that protrudes outward from the machine width when positioned above the crawler-type traveling body in a state of facing and a storage posture that is stored within the left-right width of the aircraft while positioned above the crawler-type traveling body And can be swung to the scaffolding A plurality of working postures are set by varying the swing angle in a state where the step surface faces in the horizontal direction. The scaffold is fixed to each posture by using a stay provided on the base frame. A self-propelled construction machine that is configured to be able to be freely engaged and disengaged with a plurality of working posture locking holes and storage posture locking holes provided in the housing .

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