JP3717707B2 - Self-propelled crusher - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a self-propelled crusher that carries a crushed material to a non-hopper side by a conveyor. More specifically, for example, the total weight is about 10 tons and a small space capable of monitoring a space below a crushing device from the side. This is related to the self-propelled crusher.
[0002]
[Prior art]
The crusher transports various types of rocks, construction waste materials, industrial waste, natural stones, etc. generated at construction sites, such as concrete lumps delivered at the time of building demolition and asphalt lumps discharged at road repair By crushing to a predetermined size at the work site before, reuse of waste materials, smooth construction, cost reduction, etc. are intended.
[0003]
Among the crushers, the self-propelled crusher that can run on its own is a traveling body equipped with left and right endless track tracks, a crushing device that crushes the object to be crushed into a predetermined size from a hopper, And a crusher body equipped with a feeder for guiding the material to be crushed from the hopper to the crushing device, a conveyor for conveying the crushed material that has been crushed and reduced by the crushing device, and transported on the conveyor provided above this conveyor A magnetic separator for magnetically removing magnetic substances contained in the crushed material.
[0004]
At this time, the endless track crawler, the crushing device, the feeder, the conveyor, and the magnetic separator are respectively hydraulically driven actuators, that is, a left / right traveling hydraulic motor, a crushing hydraulic motor, a feeder hydraulic motor, and a conveyor. It is driven by a hydraulic motor for magnetic field and a hydraulic motor for magnetic separator.
[0005]
By the way, in recent self-propelled crushers, as described in, for example, Japanese Patent Laid-Open No. 5-115809, maintenance of the magnetic separator is performed so as not to become an obstacle when a material to be crushed is put into a hopper with a hydraulic excavator. In order to prevent the worker who performs the excavator from being within the working range of the excavator, the conveyor is provided on the rear side (on the opposite hopper side) of the crusher body, and the crushed material is transported to the rear side (on the opposite hopper side) of the crusher. It has become.
[0006]
In the self-propelled crusher having the above-described configuration, the material to be crushed put into the hopper above the crusher is guided to the crushing device by the feeder below the hopper, and is crushed by this crushing device. The crushed crushed material falls from the space below the crushing device onto a conveyor below the crushing device, and is conveyed to the non-hopper side by this conveyor. In the middle of this transportation, for example, a reinforcing bar piece mixed in a concrete lump is adsorbed and removed by a magnetic separator arranged above the conveyor. By such an operation, the crushed material is finally arranged to some extent in size and carried out from the rear part of the crusher.
[0007]
[Problems to be solved by the invention]
In recent years, with the background of promoting waste reuse such as the enforcement of the Recycling Resource Promotion Law (so-called Recycling Law) (October 1991), we have actively used self-propelled crushers even at smaller construction sites. There is a growing movement to crush rocks, construction wastes, industrial waste, etc. at the site. In response to these trends, for example, a 10-ton truck (preferably a single-truck truck that is not a trailer) can be loaded and transported to improve transportability. There is a growing need for self-propelled crushers (about 10 tons in weight). In order to reduce the size in order to meet such needs, it is essential to reduce the size in the vertical direction from the viewpoint of reducing the size of the crusher main body and the traveling body, in particular, preventing interference with road surrounding structures during transportation.
[0008]
Here, as described above, the crushed material crushed by the crushing device falls and is transported on the conveyor below the crushing device, and between the lower end of the crushing device and the upper surface of the belt conveyor. A predetermined space is formed. However, in the case where the vertical dimension is intended to reduce the size of the crusher as described above, this space must be reduced to a relatively small size.
[0009]
By the way, in the background of the above-mentioned waste recycling promotion, in recent years, concrete containing reinforcing bars is increasing as objects to be crushed. When such concrete is thrown into the crushing device, the reinforcing bars contained in the concrete may not be crushed but may be discharged into the lower part of the crushing device in a complicated and bent shape due to external force from the crushing device. In such a case, the bent reinforcing bar stays between the discharge port at the lower part of the crushing device and the conveyor below it, or immediately after the reinforcing bar falls on the conveyor and starts to be transported to the nearby structure. There is a possibility of getting stuck. If such stagnation occurs, it is necessary to immediately stop the operation of the crushing device and remove the stagnation (clogging) of the reinforcing bars.
[0010]
As described above, since the space below the crushing device has been reduced in response to the recent needs for downsizing of self-propelled crushers, there is a concern that the possibility of the stay of this reinforcing bar will increase more than before. ing. For this reason, during the crushing operation, there is a need to constantly monitor the space below the crushing device with the visual observation of the operator. In this case, on the structure of the self-propelled crusher, from the front of the space, the hopper, feeder, and the structure that supports them obstruct the view, and from the rear, the conveyor, magnetic separator, and support them. Since structures and the like obstruct the field of view, it is preferable to monitor from the side.
[0011]
However, in the conventional self-propelled crusher proposed for miniaturization, such a need is not taken into consideration, and the space below the crushing device cannot be monitored from the side.
[0012]
The present invention has been made in view of the above-mentioned matters, and its purpose is to monitor the space below the crushing device from the side in a small self-propelled crusher that carries the crushed material to the non-hopper side by a conveyor. It is to provide a configuration that can be done.
[0013]
[Means for Solving the Problems]
For the present invention to achieve the above object, a first aspect of the present invention is crushed by crusher to be crushed, in a small self-propelled crushing machine for discharging the crushed crushed by unloading conveyor, broken mill A track frame having an attachment portion and a leg portion provided as an integrated structure below the crusher attachment portion, an endless track crawler provided at a lower portion of the leg portion, and a lowermost portion the same as the endless track crawler A carry-out conveyor disposed between the legs by a suspension member so as to be positioned at a certain height, and a part corresponding to a lower part of the crushing device on a side surface of the leg, and from the crushing device to the carry-out conveyor An opening for visually observing the behavior of the crushed material received by the opening, and an opening / closing means provided with one end at the top of the opening so as to suppress dust flowing out from the opening. It is characterized in.
[0014]
According to a second aspect, in the first aspect, the opening / closing means is rubber.
[0015]
Furthermore, a third invention is characterized in that, in the first invention, the opening / closing means is rubber.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the self-propelled crusher of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing the entire structure of the self-propelled crusher of the present embodiment, FIG. 2 is a top view of the self-propelled crusher shown in FIG. 1, and FIG. It is sectional drawing by a middle III-III cross section.
[0022]
1 to 3, the self-propelled crusher 1 responds to the need for downsizing based on the recent background of waste recycling promotion, for example, the total weight is about 10 tons, It can be loaded and transported on this type of truck (preferably a single-truck type truck that is not a trailer) to improve transportability.
[0023]
The self-propelled crusher 1 has a hopper 2 that receives a material to be crushed by a working tool such as a bucket of a hydraulic excavator, the hopper 2 that receives the material to be crushed, and has a substantially V-shaped side sectional shape. Crushing device for crushing the crushed object to a predetermined size and discharging it downward, for example, a jaw crusher 3 and a crusher body provided with a feeder 4 for conveying the crushed object received in the hopper 2 to the jaw crusher 3 7, a conveyor 5 that receives the crushed material crushed by the jaw crusher 3 and discharged downward, transports it to the rear side (right side in FIGS. 1 and 2) of the crusher 1, and is provided above the conveyor 5. A magnetic separator 6 that magnetically attracts and removes magnetic substances contained in the crushed material being conveyed on the conveyor 5, and a traveling body 8 provided below the crusher body 7.
[0024]
The traveling body 8 includes a track frame 9 having a crusher attachment portion 9A and a leg portion 9B provided as a welded integrated structure below the crusher attachment portion 9A, and a left provided at the lower portion of the leg portion 9B. -It has the right endless track crawler track 8a. At this time, of the side surfaces 9B1 and 9B2 of the leg portion 9B arranged in the short direction of the track frame 9 (the width direction of the crusher), the side surface 9B1 has an opening 50 through which the inside can be seen. Is formed.
[0025]
The hopper 2 and the feeder 4 are mounted on the front side in the longitudinal direction of the track frame 9 (specifically, the front side in the longitudinal direction of the crusher mounting portion 9A, that is, the left side in FIGS. 1 and 2). It is mounted above the front end portion in the longitudinal direction of the crusher mounting portion 9A.
[0026]
The jaw crusher 3 is located behind the hopper 2 and the feeder 4 (on the right side in FIGS. 1 and 2), and as shown in FIGS. 1 and 2, the longitudinal direction of the track frame 9 (see FIGS. 1 and 2). (2 middle left and right direction) It is mounted on the middle part. At this time, the driving force generated by the crusher hydraulic motor 10 is transmitted to the flywheel 12 via the belt 11, and the driving force transmitted to the flywheel 12 is further moved to the moving teeth 3a by a known conversion mechanism (see FIG. 2). By converting the moving tooth 3a back and forth with respect to the fixed tooth 3b (same as above), the object to be crushed supplied from the feeder 4 is crushed into a predetermined size. ing. The upper and side portions of the jaw crusher 3 are covered with the housing 13, but an openable / closable cover 14 is provided on the upper portion of the housing 13, and the upper portion is opened as shown in FIG. The inside of the jaw crusher 3 can be visually recognized from the upper side (including the upper side, the side side, and the upper side in the front-rear direction).
[0027]
As shown in FIGS. 1 and 2, the feeder 4 is provided on the front end (left side in FIGS. 1 and 2) in the longitudinal direction (left and right direction in FIGS. 1 and 2) of the track frame 9 via a column 16a. The hopper 2 is positioned almost directly above the feeder frame 16. The feeder 4 is a so-called grizzly feeder, and a plurality of (two in this example) saw teeth on which the object to be crushed from the hopper 2 is placed by the driving force generated by the feeder hydraulic motor 15. The bottom plate portion including the plate-like plate 4a is vibrated. As a result, the objects to be crushed put into the hopper 2 are sequentially conveyed and supplied to the jaw crusher 3 (= conveyance function), and fine earth and sand adhering to the object to be crushed during the conveyance is removed from the gap between the saw teeth of the serrated plate 4a. It is designed to drop downward. That is, it also has a sorting function of sorting the objects to be crushed having a particle size larger than the size of the gap by screening the objects to be crushed having a particle size smaller than the size of the saw-tooth gap of the serrated plate 4a. .
[0028]
As shown in FIG. 1, the conveyor 5 is supported by being hung on a power unit 32 (described later) via a support member 5 d at the conveyance side (rear side of the crusher, right side in FIG. 1). Further, the part opposite to the conveyance side (front side of the crusher, left side in FIG. 1) is positioned below the truck frame crusher mounting portion 9A, and is suspended from the track frame crusher mounting portion 9A via the support members 5b and 5c. Supported to be lowered. The conveyor 5 is configured to drive the belt 5a by a conveyor hydraulic motor 17 and thereby transport the crushed material falling on the belt 5a from the jaw crusher 3.
[0029]
The magnetic separator 6 is attached to the power unit 32 via the support member 6b, and the magnetic separator belt 6a disposed so as to be substantially orthogonal to the conveyor belt 5a is disposed above the conveyor belt 5a. By driving around the magnetic force generating means (not shown) by the hydraulic motor 18 for use, the magnetic force from the magnetic force generating means is applied to the belt 6a to adsorb the magnetic material to the belt 6a, and then substantially the same as the conveyor belt 5a. It conveys in the orthogonal direction and falls to the side of the conveyor belt 5a.
[0030]
The endless track crawler belt 8a is spanned between a drive wheel 19 and an idler 20 provided on the traveling body 8, and is driven by a traveling hydraulic motor 21 (not shown) provided on the drive wheel 19. Is given, the crusher 1 is made to travel.
[0031]
A power unit frame 32a that forms the basic lower structure of the power unit 32 is mounted on the upper part of the longitudinal rear end (right side in FIGS. 1 and 2) of the crusher mounting portion 9A of the track frame 9 (see FIG. 1). ).
[0032]
The power unit 32 discharges pressure oil to hydraulic actuators such as the crusher hydraulic motor 10, the feeder hydraulic motor 15, the conveyor hydraulic motor 17, the magnetic separator hydraulic motor 18, and the left / right traveling hydraulic motor 21. At least one hydraulic pump (not shown), an engine (same as the prime mover) that drives the hydraulic pump, and a plurality of pressure oils that control the direction and flow rate of pressure oil supplied from the hydraulic pump to the hydraulic actuator. A control valve device (same as above), a fuel tank of the engine (only the refueling port 34 is shown in FIG. 2), a hydraulic oil tank (only the refueling port 35 is shown in FIG. 2), Built in.
[0033]
In this power unit 32, when the engine below the engine cover 36 is started, the hydraulic pump is driven as described above. On the other hand, the driving force causes a fan (not shown) provided on the upstream side of the engine cooling air (described later) to rotate, so that external air is introduced into the internal space of the power unit 32 from the intake hole 37 and After cooling the radiator (showing its cooling water inspection port 38 in FIG. 2), it flows into the fan. Further, the cooling air blown out from the fan cools an engine, a muffler (not shown), a hydraulic pump, and the like, and then is released into the atmosphere from the exhaust hole 39. Further, at this time, exhaust gas from the engine flows into the muffler from an exhaust manifold (not shown) of the engine and is muffled, and then released into the atmosphere from the exhaust gas pipe 40 connected to the muffler. Reference numeral 41 denotes an air cleaner intake for purifying the intake air to the engine.
[0034]
Further, a driver's seat 42 on which an operator gets on the front side (left side in FIG. 2) of the power unit 32 is provided, and the operator stands on the driver's seat 42 (see FIG. 1), so that the crushing operation is being performed. In FIG. 4, the supply state of the object to be crushed by the feeder 4 and the crushing state by the jaw crusher 3 can be monitored. Note that an auxiliary step 9Aa serving as a scaffold for getting on and off the driver's seat 42 is attached to the truck frame crusher attaching portion 9A.
[0035]
Here, the jaw crusher 3, the feeder 4, the conveyor 5, the magnetic separator 6 and the endless track crawler 8a are the crusher hydraulic motor 10, the feeder hydraulic motor 15, the conveyor hydraulic motor 17, and the magnetic separator hydraulic motor 18. And a known hydraulic drive device including a traveling hydraulic motor 21.
[0036]
That is, for example, when the self-propelled crusher 1 is self-propelled, the pressure oil from the hydraulic pump is switched according to the operation of the operation levers 52 and 53 of the driver's seat 42. It is supplied to the traveling hydraulic motor 21 through (not shown), whereby the endless track crawler 8a is driven and the traveling body 8 travels.
[0037]
Further, at the time of crushing work, for example, a feeder start switch (same), a crusher start switch (same), and a conveyor / magnetic separator start switch (same) of an operation panel (not shown) provided in the driver's seat 42 are sequentially pressed. Then, the operation signal is input to the controller (same as above) in the control panel 150 (see FIG. 2), and is further output as a drive signal from the controller to control the feeder control valve (same as above), crushing control valve (same as above), and The control valve for the conveyor and magnetic separator (same as above) is switched, whereby the pressure oil from the hydraulic pump is supplied to the corresponding hydraulic motors 15, 10, 17, and 18 through these control valves, thereby the feeder 4 The jaw crusher 3, the conveyor 5 and the magnetic separator 6 are driven.
[0038]
In the above description, the endless track crawler 8a constitutes the traveling means, the jaw crusher 3 constitutes the crushing device, the track frame 9 constitutes the frame, and the track frame side surface 9B1 is disposed in the short direction of the frame. The side surface is configured, and the opening 50 configures an opening provided on the side surface.
[0039]
The left and right directions in FIGS. 1 and 2 correspond to the longitudinal direction of the frame, the left side in FIGS. 1 and 2 corresponds to one side in the longitudinal direction of the frame, and the right side in FIGS. It corresponds to the side. Further, the left-right direction in FIG. 3 corresponds to the short direction of the frame.
[0040]
Next, the operation of the present embodiment will be described below.
[0041]
For example, when a material to be crushed is introduced into the hopper 2 with a bucket of a hydraulic excavator, the material to be crushed is guided to the jaw crusher 3 while only those having a predetermined particle size or more are selected in the feeder 4. It is crushed to a predetermined size. The crushed crushed material is discharged from the space below the jaw crusher 3, dropped onto the conveyor 5, accepted and transported to the anti-hopper 2 side, and the magnetic material mixed into the crushed material by the magnetic separator 6 during the transportation. An object (for example, a reinforcing bar piece mixed in the construction waste material of concrete) is removed, the sizes are almost equalized, and finally, it is carried out from the rear part (right end part in FIG. 1) of the crusher 1.
[0042]
By the way, in the background of the above-mentioned waste recycling promotion, in recent years, concrete containing reinforcing bars has been increasing as a material to be crushed, and when such concrete is thrown into the jaw crusher 3 during the above operation, May not be crushed and may be discharged into the lower part of the jaw crusher 3 in a complicated and bent shape by an external force from the jaw crusher 3. In such a case, the bent reinforcing bar stays between the discharge port at the lower part of the jaw crusher 3 and the conveyor 5 below, or immediately after the reinforcing bar falls on the conveyor 5 and starts to be transported. There is a possibility of being caught by a structure and staying. If such stagnation occurs, it is necessary to immediately stop the operation of the jaw crusher 3 and remove the stagnation (clogging) of the reinforcing bars.
[0043]
Here, the self-propelled crusher 1 according to the present embodiment is not particularly clearly illustrated, as is the case with a normal small-sized self-propelled crusher of this type that is intended to reduce the size of the entire crusher, but the jaw crusher. 3 The space below is reduced to a relatively small size, thereby reducing the vertical dimension of the entire crusher. Therefore, it cannot be said that there is no concern that the possibility that the above-mentioned rebar stays will increase compared to the conventional case.
[0044]
At this time, as described above, the jaw crusher 3 is placed on the track frame crusher attachment portion 9A, and the conveyor 5 is attached to the track frame crusher via the suspension members 5b and 5c as shown in FIG. It is suspended and supported by the portion 9 </ b> A and is located at the same height as the traveling body 8. Therefore, in the present embodiment, the opening 50 is provided on the side surface 9B1 of the track frame leg portion 9B. As a result, the behavior of the crushed material in the space below the jaw crusher 3, that is, the state when it is discharged from below the jaw crusher 3 and received and transported by the conveyor 5, can be viewed from the side of the crusher 1. Therefore, since the space below the crushing device can be constantly monitored by the operator's visual observation during the crushing operation, it is possible to respond promptly even when the above retention occurs.
[0045]
Further, as described above, the space below the jaw crusher 3 is reduced in order to reduce the size of the entire crusher 1, so that an operator enters the space and performs maintenance work like a conventional non-compact machine. Although it becomes difficult, the maintenance work can be easily performed from the side through the opening 50 by providing the opening 50.
[0046]
In the embodiment of the present invention, the opening 50 is provided on one side surface 8b1 of the track frame side surfaces 8b1 and 8b2. However, the present invention is not limited to this and may be provided on the opposite side surface 8b2. Needless to say, both may be provided. In short, it is sufficient to provide the opening 50 at a position where the state when the paper is discharged from below the jaw crusher 3 and received and transported by the conveyor 5 can be best visually recognized.
[0047]
In the embodiment of the present invention, the opening 50 provided on the track frame side surface 8b1 is exposed as it is. However, the present invention is not limited to this, and the opening 50 is not exposed by a member provided separately. May be. Such a modification is shown below.
[0048]
(1) A door provided with an opening / closing door, that is, an enlarged side view of the main part, as shown in FIG. 4, with an opening / closing door 48 of the same size as the opening 50 as an opening / closing means capable of opening / closing the opening 50 It is.
[0049]
At this time, the open / close door 48 includes two plate-like members 48a and 48b and two hinges 48c and 48d. The hinge 48c connects the plate-like member 48a to the track frame side surface 8b1 so as to be rotatable, and can be turned to lift the plate-like members 48a, 48b upward. On the other hand, the hinge 48d connects the plate-like member 48a and the plate-like member 48b so as to be rotatable, and when the plate-like members 48a, 48b are lifted upward via the hinge 48c as described above. The plate-like member 48a and the plate-like member 48b can be folded in a mountain fold. Thus, the opening and closing operation can be smoothly performed without contacting the endless track crawler belt 8a. Needless to say, when the possibility of such contact is low, the plate-like members 48a and 48b may be combined into one plate.
[0050]
According to this modification, the following effects can be obtained.
In other words, since the crushed material crushed by the jaw crusher 3 falls in the space below the jaw crusher 3, finely crushed fragments are often scattered as dust during the crushing operation. However, it is possible to prevent this dust from flowing out of the crusher by appropriately closing the opening 50 with the opening / closing door 48 as necessary.
[0051]
(2) What is covered with a transparent plate, that is, a transparent plate 49 made of a transparent member such as acrylic, plastic or glass so as to cover the opening 50 as shown in FIG. Is provided. The upper end portion of the plate 49 is pivotally connected to the track frame side surface 8b1 via a hinge 49a, whereby the opening 50 can be opened and closed. That is, the transparent plate 49 constitutes an opening / closing means that can open and close the opening 50.
[0052]
In this case, since the plate 49 is transparent, there is an effect that the space below the jaw crusher 3 can be monitored even when the opening 50 is covered (closed).
[0053]
Note that the opening / closing means may be made of vinyl, transparent rubber or the like instead of the plate as described above. In this case, since vinyl and rubber are soft and can be easily turned up, the upper end may be simply fixed to the track frame side surface 8b1 without providing a hinge. Further, the folding door structure as described in the above item (1) may be formed of a transparent plate.
[0054]
Note that the present invention is not limited to a small self-propelled crusher as described above, and may be applied to a so-called medium or large self-propelled crusher.
[0055]
In the above description, the case where the motor is applied to a self-propelled crusher equipped with an engine has been described as an example. However, the present invention is not limited to this. For example, the motor is applied to a self-propelled crusher equipped with an electric motor or the like. May be.
[0056]
Moreover, in the above, although demonstrated as an example the self-propelled crusher 1 provided with the jaw crusher 3 which crushes with the moving tooth 3a and the fixed tooth 3b as a crushing device, it is not restricted to this, Other crushing devices, For example, a rotary crusher (a so-called rotary crushing device (so-called “rotating crushing device”) that rotates a pair of crushing blades attached to a roll-shaped rotating body in opposite directions and crushes the object to be crushed between the rotating bodies. 6-shaft crushers including roll crushers) and crushing devices (such as 2-shaft shearing machines including so-called shredders) that have cutters on parallel shafts and reversely rotate them to shear the objects to be crushed. It can also be applied to other crushers. In these cases, the feeder 4 may be omitted. Similar effects are obtained in these cases.
[0057]
Furthermore, in the above, the self-propelled crushing provided with the grizzly feeder as the feeder 4 which vibrates the baseplate part containing the several serrated plate 4a which mounts a to-be-crushed object using the drive force of a hydraulic motor. Although the machine 1 has been described as an example, it is not limited thereto. That is, another type of feeder, for example, a material to be crushed from a hopper is placed on a substantially flat bottom plate provided below the hopper, and this base plate is driven by a base drive mechanism based on a driving force generated by a hydraulic motor. A crusher equipped with a so-called plate feeder that reciprocates in a substantially horizontal direction to sequentially extrude the preceding crushing raw material on the bottom plate by feeding the subsequent crushing raw material and sequentially supply the crushing raw material from the front end of the bottom plate to the crushing device. It is also applicable to.
[0058]
Moreover, in the above, although demonstrated as an example the case where it applied to the self-propelled crusher provided with the feeder 4, the conveyor 5, and the magnetic separator 6 as an auxiliary machine which performs the work relevant to the crushing work by a crushing device, It is not limited to this. That is, a self-propelled crusher in which some of the feeder 4, the conveyor 5, and the magnetic separator 6 are appropriately omitted, for example, the feeder 4 is not provided and the crushed material is directly supplied from the hopper 2 to the jaw crusher 3 through the duct or chute. However, the magnetic separator 6 may be omitted depending on work circumstances. Conversely, in addition to the feeder 4, the conveyor 5 and the magnetic separator 6, an additional auxiliary machine, for example, an auxiliary conveyor (2) located on the downstream side (or upstream side) of the conveyor 5 in order to lengthen the path of the conveyor 5. It may be applied to a self-propelled crusher provided with a vibrating screen positioned downstream of the jaw crusher 3 in order to perform further sorting according to the particle size of the next conveyor) or crushed material.
[0059]
【The invention's effect】
According to the present invention, since the opening is provided on the side surface arranged in the short direction of the frame, the space below the crushing device can be visually monitored from the side.
[Brief description of the drawings]
FIG. 1 is a side view showing the overall structure of a self-propelled crusher according to an embodiment of the present invention.
FIG. 2 is a top view of the self-propelled crusher shown in FIG.
FIG. 3 is a cross-sectional view taken along the line III-III in FIG.
4 is an enlarged side view of an essential part showing a modification in which an opening / closing door is provided in the opening shown in FIG. 1. FIG.
5 is an enlarged side view of an essential part showing a modification in which the opening shown in FIG. 1 is covered with a transparent plate. FIG.
[Explanation of symbols]
2 Hopper 3 Jaw crusher (crusher)
4 Feeder 5 Conveyor 6 Magnetic separator 7 Crusher body 8 Traveling body 8a Endless track crawler (traveling means)
9 Track frame (frame)
9A Crusher mounting part 9B Leg part 9B1 Side face 32 Power unit 48 Opening / closing door (opening / closing means)
49 Transparent plate (opening / closing means)
50 opening (opening)

Claims (3)

In a small self-propelled crusher that crushes the material to be crushed by a crushing device and discharges the crushed material after crushing by a carry-out conveyor, a leg provided as an integrated structure below the crusher attachment part and the crusher attachment part A track frame provided with a portion, an endless track crawler provided at a lower portion of the leg portion, and a suspension member between the legs so that a lowermost portion is positioned at the same height as the endless track crawler track. An opening for visually checking the behavior of the crushed material provided in the portion corresponding to the crushing device lower portion on the side surface of the leg portion, and being received from the crushing device to the carry-out conveyor. A self-propelled crusher comprising an opening and closing means that is provided with one end at the upper portion of the opening so as to suppress dust flowing out from the section and can be lifted up.   The self-propelled crusher according to claim 1, wherein the opening / closing means is rubber.   The self-propelled crusher according to claim 1, wherein the opening / closing means is vinyl.

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