JP5031385B2 - Recycling machine and self-propelled crusher - Google Patents

Description

  The present invention relates to a recycling machine that accepts recycled materials and performs a predetermined process by a processing device to generate a recycled product, and a self-propelled crusher that receives a material to be crushed and performs a crushing process by a crushing device to generate a crushed material. About.

  In order to promote the reuse of waste, the recycled material (processed material) is sent to the processing device by the supply device and processed as a recycled product (processed material), which is processed by the discharge device (discharge conveyor). Recycling machines that discharge to the outside are used. Such recycling machines include, for example, a crusher that crushes crushed materials such as rock, construction waste, industrial waste, or waste wood generated at a construction site into a predetermined size by a crushing device (processing device). In addition, the construction generated soil and soft ground soil generated in burial work such as gas pipes, water and sewage work, and other road construction / foundation work, etc. are crushed and mixed with a soil conditioner using a mixing device (processing device). There are soil quality improvement machines that produce improved soil.

  Such a recycling machine has a power unit provided with an engine and a hydraulic pump for supplying power to actuators and the like of each device, and a cooling device for cooling them. This power unit is generally surrounded by a cover from the viewpoint of ensuring safety and preventing noise, and cools internal equipment by sucking air while removing dust in the air with a screen or the like.

  However, even if the air is taken in while removing the dust in this way, minute things such as scattered processed matter (scattered matter) and dust will enter the power unit and accumulate. If the sucked deposits are left unattended, there is a risk of damaging the internal equipment. Therefore, it is necessary to periodically clean the inside of the power unit. In particular, when organic matter such as wood is contained in the deposit, it may rot and cause metal corrosion in the power unit, which is even more important.

  As a technique for reducing such a labor for cleaning, there is a technique in which a labyrinth structure is provided at a joint or the like of members constituting the cover of the power unit so as to suppress the intrusion of scattered objects or the like (see Patent Document 1).

JP 2005-131514 A

  However, even if the labyrinth structure as described above is provided, it is necessary to secure a certain amount or more of intake air in order to cool the internal engine or the like. For this reason, there is a limit even if it is attempted to suppress the intrusion of scattered objects by making the screen finer, and those smaller than the eye enter the inside and accumulate. Therefore, cleaning in the power unit is still necessary.

  When cleaning the inside of the power unit, the cover (bottom cover) and the top cover that cover the power unit from below are removed from the machine body, and air is blown into the power unit by a blower or the like from above to clean the deposits. However, since the bottom cover is fixed to the airframe with bolts or the like, it has been troublesome to remove and attach it, and it has been difficult to clean it efficiently. Moreover, since the work space is limited in the type of recycling machine in which the discharge conveyor is provided below the bottom cover, the work becomes more difficult.

  An object of the present invention is to provide a recycling machine that can efficiently clean the inside of a power unit.

(1) In order to achieve the above-mentioned object, the present invention is provided at a main body frame, an upper portion on one side in the longitudinal direction of the main body frame, a receiving portion for receiving an object to be processed, and an upper portion of the main body frame. A processing unit for processing the workpiece received by the receiving unit, a power unit provided at the upper part on the other side in the longitudinal direction of the main body frame and having a power source and a cover surrounding the power source, and below the processing unit Recycling provided with a discharge conveyor that passes through the lower part of the power unit from one end provided at the bottom and is inclined so that the other end is located above the one end and discharges the processed material processed by the processing device a machine, an opening provided on a bottom surface of the cover so as to be positioned above the discharge conveyor, closing itself to the cover to cover the opening Attached to, and two discharge doors opening in opposite directions to each other, provided on the bottom surface of the cover, a stopper for restricting the rotation of the discharge door, provided in said cover, from the edge of the opening And a wall surface that monotonously rises upward .

(2) In the above (1) , preferably, the power unit has a control valve device,
The cover is provided to be openable and closable so as to be positioned below the control valve device and above the discharge conveyor, and includes another discharge door for discharging deposits in the power unit.

  According to the present invention, since the deposits in the power unit can be easily discharged onto the discharge conveyor, the inside of the power unit can be efficiently cleaned.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  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 thereof, FIG. 3 is a rear view thereof, and FIG. 4 is an internal structure near a crushing device 13. FIG. In the following description, the directions corresponding to the left and right of the machine body longitudinal direction in FIG.

  As shown in these drawings, the crusher of the present embodiment includes a traveling body 1 for traveling on its own, a crusher main body 2 mounted on the traveling body 1, and a crushed material from the crusher main body 2. It is composed of a discharge conveyor 3 that is a discharge unit that conveys (for example, wood chips) and discharges it to the outside of the machine, and a power unit (power device) 4 that incorporates a power source (engine) of operating equipment mounted on various parts of the machine body. ing. Next, schematic configurations of the traveling body 1, the crusher main body 2, the discharge conveyor 3, and the power unit 4 will be sequentially described.

  The traveling body 1 includes a pair of track frames 5, driving wheels 6 and driven wheels 7 provided at both front and rear ends of the track frames 5, and a driving device (traveling) in which the shafts of the driving wheels 6 and the output shafts are coupled. Hydraulic motor) 8 and a crawler belt (endless track crawler) 9 wound around the drive wheel 6 and the driven wheel 7. A main body frame 10 is provided on the pair of track frames 5. The main body frame 10 supports the above-described crusher main body 2, the discharge conveyor 3, the power unit 4, and the like.

  The crusher body 2 includes a hopper (accepting unit) 11 that receives an object to be crushed (for example, waste wood), a feed conveyor 12 that conveys the object to be crushed into the hopper 11, and a feed conveyor 12 The pressing feeder 14 (see FIG. 4) that presses the object to be crushed to the feed conveyor 12 side and feeds it to the crushing apparatus 13 (see FIG. 4), and the crushed object supplied by the feeding conveyor 12 and the pressing feeder 14 are crushed. A crushing device 13 is provided. Here, among the above portions, the feed conveyor 12 and the press feeder device 14 constitute a supply device that supplies the object to be crushed received through the hopper 11 to the crushing device 13.

  The hopper 11 is a bottomed member having an open top and is provided substantially horizontally on the rear side of the main body frame 10. The object to be crushed is input from above or behind the hopper 11 by a heavy machine (such as a hydraulic excavator) equipped with an appropriate work tool such as a grapple.

  The feed conveyor 12 is accommodated almost horizontally in the hopper 11 and is provided on the rear side in the longitudinal direction of the main body frame 10, and conveys the object to be crushed to the crusher 13. Further, as shown in FIG. 4, the feed conveyor 12 is connected to a sprocket-like drive wheel 15 provided facing a crushing rotor 32 (described later) provided in the crushing device 13 and on the opposite side (the rear side of the machine body). The carrier 16 is hung around a driven wheel (not shown) provided. The conveyance body 16 is constituted by a chain belt, and is arranged in a plurality of rows (four rows in this example) in the machine body width direction as shown in FIG. The conveyance body 16 may be configured by using the driving wheel 15 and the driven wheel as pulleys and a rubber belt wound around them.

  In FIG. 4, the crushing device 13 is provided at an upper portion of a substantially central portion of the main body frame 10. The crushing device 13 includes a crushing rotor 32 configured by attaching a plurality of crushing bits 31 to a peripheral body part (outer peripheral part) of a drum 19, and an anvil (fixed blade) 33 that crushes the material to be crushed by the crushing bit 31. It has. The crushing rotor 32 is provided on the main body frame 10 so as to face the front end portion of the feed conveyor 12, and the anvil 33 is provided on the radially outer side of the crushing rotor 32.

  A screen 35 is provided below the crushing rotor 32 to sort the crushed material by particle size and discharge it onto the discharge conveyor 3. A curved plate 39 is provided above the crushing rotor 32. The screen 35 is a curved plate member, and a plurality of holes (not shown) having a predetermined diameter are provided on the plate surface. The screen 35 sorts the particle size of the discharged crushed material using the size of the holes. The screen 35 and the curved plate 39 configured as described above define a crushing chamber 34 that is a space in which the object to be crushed is crushed.

  The pressure feeder device 14 includes a pressure roller 17 disposed above the drive wheel 15 of the feed conveyor 12 and a support member 18 that supports the pressure roller 17, and is provided so as to cover the crushing rotor 32 from above. Yes. The support member 18 is attached such that the front end portion thereof is pivotable up and down with the pivot shaft 36 as a fulcrum, and the pressing roller 17 moves up and down. Although not particularly shown in FIG. 4, the rotation shaft 36 is rotatably supported on the side wall of the housing via a bearing.

  The support member 18 includes an arm portion 37 whose base end portion is supported by the rotation shaft 36, and a bracket portion 38 attached to the distal end side (the side opposite to the base end side) of the arm portion 37. The bracket portion 38 supports the pressing roller 17 from both sides so as to be rotatable. The curved plate 39 is attached to the lower surface side of the arm portion 37 facing the crushing chamber 34. Although not particularly illustrated, the pressing roller 17 is constituted by a hollow drum-like member, and houses its own driving device (not shown) inside the drum. By this drive device, the pressing roller 17 is rotated at a circumferential speed substantially the same as the conveyance speed of the object to be crushed in the direction of rolling in the conveyance direction of the object to be crushed by the feed conveyor 12 (counterclockwise in FIG. 4). In FIG. 4, the portions that protrude from the bracket portion 38 in a convex shape are covers 40 provided at both ends of the pressing roller 17.

  1 to FIG. 3, the discharge conveyor 3 includes a frame 22, driving wheels and driven wheels (both not shown) provided at both ends in the longitudinal direction of the frame 22, and the driving wheels and driven wheels. It includes a conveyor belt 24 (see FIG. 6) wound between them, a drive device (hydraulic motor for discharge conveyor) 23 that rotates a drive wheel located in front of the machine body, and the like. The crushed material discharge side (front side (left side in FIGS. 1 and 2)) of the discharge conveyor 3 is supported by hanging by a support member 20 provided so as to protrude from the power unit 4, and its opposite end (rear side) (Right side in FIG. 1 and FIG. 2) is supported by being suspended from the main body frame 10 via the support member 21. The discharge conveyor 3 passes between the traveling bodies 1 from below the crushing device 13 to below the power unit 4 and is supported by support members 20 and 21 so as to be inclined upward toward the front of the machine body. That is, one end of the discharge conveyor 3 is provided below the crushing device 13 and between the pair of track frames 5, and the other end (discharge side) is provided on the front side in the longitudinal direction of the machine body so as to be positioned above one end. It has been. With such a configuration, the discharge conveyor 3 circulates and drives the conveyor belt 24 by rotationally driving the driving device 23 and discharges the crushed material crushed by the crushing device 13 to the outside of the machine.

  The power unit 4 is mounted on the crusher via a support member 25 provided on the front side end in the longitudinal direction of the main body frame 10, and is disposed in front of the crushing device 13 and above the discharge conveyor 3.

  By the way, in general, in the recycling machine, the position of the discharge side end portion of the discharge conveyor 3 is as high as possible from the viewpoint of securing the height of the recycled product to be discharged and the ability to load it on a transportation means such as a truck. desirable. However, in the case of assuming road traffic like the self-propelled crusher of the present embodiment, it is necessary to keep the body height within the limit value including the size of transportation means such as trucks. On the other hand, as for the length of the aircraft, in addition to the above restrictions on road traffic, it is necessary to consider the loadability on a truck or the like, and it is preferable that the length is as short as possible.

  From such a situation, the self-propelled crusher of the present embodiment is arranged so that the power unit 4 protrudes from the main body frame 10 to the front of the machine body (the discharge end side of the discharge conveyor 3) and is as close as possible to the discharge conveyor 3. The length of the machine body is shortened by arranging the rising position of the discharge conveyor 3 on the processing apparatus (crushing apparatus 13) side by arranging the upper position within the range of the height restriction by the support member 25.

  Here, the structure of the power unit 4, which is the most characteristic part in the present embodiment, will be described in detail with reference to FIGS. 5, 6, and 7.

  FIG. 5 is a top view showing the internal structure of the power unit 4 provided in the self-propelled crusher of the present embodiment, FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 2, and FIG. It is a longitudinal cross-sectional view in the VII-VII cross section in FIG. In FIG. 5, the engine 50 side described later corresponds to the front side of the machine body (discharge conveyor 3 side), and the control valve device 53 side described later corresponds to the rear side of the machine body (crushing device 13 side). The same parts as those in the previous figure are denoted by the same reference numerals, and description thereof will be omitted (the same applies to the subsequent figures).

  In these drawings, the power unit 4 includes an engine 50 serving as a drive source for the self-propelled crusher according to the present embodiment, a cooling device 51 for cooling the engine 50, and each hydraulic actuator in the body driven by the engine 50. A hydraulic pump 52 for supplying pressure oil to the engine, a control valve device 53 for appropriately controlling the flow of pressure oil supplied from the hydraulic pump 52 to each hydraulic actuator, a fuel tank 54 for storing fuel of the engine 50, and hydraulic pressure A hydraulic oil tank 55 in which hydraulic oil supplied from the pump 52 to each hydraulic actuator is stored, and a cover provided so as to surround each of the devices 50, 51, 52, 53, etc. from the outside world. 60 and a first discharge door 70 and a second discharge that are provided on the cover 60 and discharge scattered matter (deposits) accumulated in the power unit 4. It is equipped with a 71.

  A partition plate 61 that partitions the space in the power unit 4 is provided between the engine 50 and the hydraulic pump 52, and a partition plate 62 and a partition plate 63 are provided between the engine 50 and the control valve device 53. ing. Of the spaces partitioned by these partition plates 61, 62, 63, the partition where the engine 50 is disposed is the engine chamber 65, the partition where the hydraulic pump 52 is disposed is the pump chamber 66, and the control valve device 53 is disposed. The section to be performed is a control valve chamber 67. FIG. 5 shows a part of the partition plates 61, 62, 63.

  Support members (for example, I-shaped beams) 56a and 56b are provided on the bottom surface of the power unit 4 along the longitudinal direction of the machine body. The members 56a and 56b support the engine 50 and the control valve device 53, and the power unit 4 The structural strength of is improved.

  The engine 50 is supported in the vicinity of the center in front of the airframe by support members 56 a, 56 b and the like, and is fixed in the engine chamber 65. The engine chamber 65 has a bottom surface (a part of the cover 60) provided with an opening 72 for discharging suspended matters in the atmosphere, scattered crushed materials, etc. (deposits) deposited in the power unit 4. A first discharge door 70 is attached to the opening 72 so as to be freely opened and closed.

  The opening 72 is disposed between the support member 56 a and the support member 56 b and above the discharge conveyor 3. Therefore, when the first discharge door 70 is opened, the deposit in the engine chamber 65 is discharged onto the discharge conveyor 3. The width of the opening 72 (length in the machine body width direction) is preferably shorter than the width of the discharge conveyor 3 so that deposits are not scattered outside the discharge conveyor 3 as much as possible during discharge. More preferably, the width of the opening 72 is shorter than the width of the conveyor belt 24 (see FIG. 6).

  In addition, as shown in FIG. 6, a suction material depositing portion (deposition portion) having a wall surface 73 that monotonously rises upward from the edge of the opening portion 72 to the upper ends of the support members 56 a, 56 b and the like around the opening portion 72. ) 74 is preferably provided. If comprised in this way, since the deposition part 74 is comprised only by the inclined or vertical wall surface other than the 1st discharge door 70, the discharge | emission property of a deposit can be improved. Further, as shown in FIG. 6, the wall surface 73 is better to stand up while expanding outward as it goes upward. When the wall surface 73 is provided in this way, the depositing portion 74 is configured such that the opening area increases upward, so that the deposit discharge performance is further improved. The wall surface 73 is not only raised to the upper end of the support members 56a, 56b, etc., but is further extended and monotonously raised so as to be connected to the partition walls 61, 62, 63 and the inner wall surface of the cover 60, etc. It is further preferable that a flat portion in 65 is not provided as much as possible.

  The first discharge door 70 includes two doors, and each door is attached symmetrically with respect to the opening 72. One end (fixed end) 70a (see FIG. 6) of each door is fixed to the cover 60 with a butterfly plate 92 (see FIG. 8 described later) or the like so as to be a rotation axis, and the other end of each door. The (free end) 70b (see FIG. 8) is configured to rotate about the fixed end 70a side. That is, the two doors of the first discharge door 70 are configured to be openable and closable so as to open in directions opposite to each other, so that a so-called double door opening is possible (see FIG. 8 described later). In addition, it is good to attach so that each door may open to the both sides of a body width direction from a viewpoint which suppresses that a deposit disperses outside the discharge conveyor 3 at the time of discharge | emission. If attached in this way, it is possible to suppress the deposits from being scattered in the machine body width direction when falling onto the discharge conveyor 3.

  The free end side 70b of the first discharge door 70 is fixed to each other by a fixing means such as a bolt when the door is closed, and the posture is maintained by the fixing means. The fixing means may be a wedge or a latch.

Here, a configuration when the first discharge door 70 is opened will be described.
FIG. 8 is a cross-sectional view of the state in which the first discharge door 70 is opened in FIG.

  In this figure, the free end 70b of the first discharge door 70 is disposed above the discharge conveyor 3 with the discharge door 70 opened. As described above, in order to limit the stationary posture of the door when the first discharge door 70 is opened, for example, a stopper 90 that restricts the rotation of the discharge door 70 on the bottom surface of the cover 60 (see FIG. 9 described later). ). If the stopper is configured so that the free end 70b is always positioned on the discharge conveyor 3 even when the discharge door 70 is opened and closed, scattering of deposits can be more reliably suppressed.

  The cooling device 51 includes a radiator and a radiator fan (not shown), and is disposed at one end in the body width direction with respect to the engine 50 (on the opposite side of the hydraulic motor 52). A screen (net) 57 (see FIG. 6) serving as an outside air inlet is provided on the outer side of the cooling device 51 in the body width direction.

  The screen 57 has a plurality of holes (eyes) (not shown) having a predetermined size, and suspended matter in the atmosphere contained in the intake air, scattered crushed matter (scattered matter), etc. enter the power unit 4. To suppress that. The cooling device 51 sucks outside air through a screen 57 by a radiator fan, and cools the cooling water of the engine 50 that passes through the radiator.

  The hydraulic pump 52 is provided on the opposite side of the cooling device 51 with respect to the engine 50 (the other side end in the body width direction). As shown in FIG. 6, the partition plate 61 covers the hydraulic pump 52, and is configured not to enter other compartments even when hydraulic fluid leaks from the hydraulic pump 52.

  The control valve device 53 is mounted on mounting members 58 a and 58 b that are stretched over the support members 56 a and 56 b, and is fixed in the control valve chamber 67. An opening 76 for discharging deposits is provided on the bottom surface of the control valve chamber 67 (a part of the cover 60), and a second discharge door 71 is attached to the opening 76 so as to be freely opened and closed. .

  Similar to the opening 72, the opening 76 is disposed between the support member 56 a and the support member 56 b and above the discharge conveyor 3. The width of the opening 76 is also preferably shorter than the width of the discharge conveyor 3 so that deposits are not scattered as much as possible outside the discharge conveyor 3 during discharge. Although not particularly illustrated, it is preferable to provide a deposition portion having a wall surface similar to the wall surface 73 around the opening 76.

  The second discharge door 71 is composed of a single door. One end (fixed end) 71a (see FIG. 5) of the door is fixed to the cover 60 with a butterfly plate or the like so as to be a rotating shaft, and the other end (free end) 71b (see FIG. 5) is It is configured to rotate about the fixed end 71a side (see FIG. 7). The second discharge door 71 is preferably attached so that the fixed end 71 a side is disposed on the front side of the body of the opening 76 and the free end 71 b side is disposed on the rear side of the body of the opening 76. If the discharge door 71 is attached in this way, when the door is opened, the free end 71b side comes to the front of the machine body, so that the opening 76 that is located closer to the machine body center (crushing device 13 side) than the opening 72 is opened and closed. The opening and closing work is also facilitated when performing the operation.

  When crushing is performed in the self-propelled crusher configured as described above, an object to be crushed (for example, waste wood) is put into a hopper with a hydraulic excavator or the like equipped with a grapple and fed onto the feed conveyor 12. . When the object to be crushed on the feed conveyor 12 is conveyed toward the crushing device 13, the pressing roller 17 rides on the object to be crushed before the crushing device 13. Then, the material to be crushed is pressed against the feed conveyor 12 by its own weight, and the pressure roller 17 and the feed conveyor 12 are in a state of gripping the material to be crushed. In this state, the feeding functions further cooperate to supply the object to be crushed to the crushing device 13.

  The crushing device 13 rotates the crushing rotor 32 at a high speed, hits the object to be crushed with the crushing bit 31, and roughly crushes the object to be crushed with the anvil 33. At this time, the crushing rotor 32 rotates in a direction (counterclockwise in the figure) in which the crushing bit 31 collides with the object to be crushed from below as shown by an arrow in FIG. The crushing reaction force is mainly received by the pressing roller 17.

  The fragments to be crushed in the middle of crushing are further refined as they circulate in the crushing chamber 34 with the rotation of the crushing rotor 32 and repeatedly collide with the crushing bit 31 and the anvil 33 in the crushing chamber 34. The crushed material having a particle size smaller than the hole of the screen 35 constituting the crushing chamber 34 passes through the hole and is discharged onto the discharge conveyor 3.

  By the way, when a series of crushing operations as described above are performed, the crushed material may be scattered around the crusher in the course of the operation. In particular, those fine enough to float in the atmosphere may be deposited in the power unit 4 through the screen 57 riding on the intake air of a radiator fan or the like. In the power unit 4, dust and the like in the atmosphere accumulate in addition to such fine crushed materials. The amount of deposit in the power unit 4 is particularly significant in the case of a crusher that crushes wood that is lighter in weight and easily scattered than rocks and soil.

  As described above, the scattered matter, dust, and the like accumulated in the power unit 4 may adversely affect and damage the internal equipment. Therefore, it is necessary to periodically clean the power unit 4. In particular, when organic matter such as wood is contained in the deposit, there is a risk of decay, and in some cases, metal corrosion may be caused.

  In the crusher according to the present embodiment, there is a relation of the flow of intake air influenced by the structures in the power unit 4 such as the partition plates 61, 62, 63 and the support members 56a, 56b. There is a tendency to deposit more in 65 and then in the control valve chamber 67. In particular, in the engine chamber 65, there is a tendency that a large amount of sucked material accumulates between the support member 56a and the support member 56b.

  When discharging the suction material accumulated in the engine chamber 65, the first discharge door 70 is opened. When the fixing means such as bolts are removed and the first discharge door 70 is opened, the suction material accumulated in the accumulation portion 74 is discharged onto the discharge conveyor 3 disposed below the opening 72. Thereby, the deposit in the power unit 4 can be easily discharged outside by simply opening the first discharge door 70.

  Further, the second discharge door 71 is opened when discharging deposits in the control valve chamber 67. When the second discharge door 71 is opened, the sucked material accumulated in the control valve chamber 67 is placed on the discharge conveyor 3 disposed below the opening 76 as in the case of the first discharge door 70 described above. Discharged.

  When the conveyor belt 24 of the discharge conveyor 3 is circulated and driven in a state where the discharge doors 70 and 71 are opened in this way, the discharged deposit is transported on the conveyor belt 24 and easily discharged out of the machine body. In this state, the radiator fan may be rotated while the engine 50 is idling. In this way, an air flow can be generated in the power unit 4, and deposits in the power unit 4 can be discharged onto the discharge conveyor 3 without causing a wind by a separate blower or the like.

Next, the effect of this embodiment will be described.
First, in order to facilitate understanding of the effects of the present embodiment, a technique serving as a comparative example of the present embodiment will be described.

  The method used when cleaning the inside of the power unit 4 is to remove the cover (bottom cover) and the top cover that covers the power unit 4 from below, and send the wind into the power unit 4 from above with a blower or the like. There is something to clean by blowing away. However, since the bottom cover of a conventional recycling machine is fixed to the machine body with bolts or the like, it has been troublesome to remove and attach it, and it has been difficult to clean efficiently. In addition, since the work space is limited in the type of recycling machine as in the present embodiment in which the discharge conveyor 3 is provided below the bottom cover, the work becomes more difficult.

  Further, as a method for suppressing the intrusion of scattered objects or the like into the power unit 4, there is a method of making the screen 57 on the front surface of the cooling device (radiator) 51 finer. However, in order to cool the internal engine 50 and the like, it is necessary to secure a certain amount of intake air, and there is a limit even if the screen 57 is narrowed to suppress the intrusion of scattered objects. Therefore, those smaller than the eyes of the screen 57 still enter the inside and accumulate. In particular, in the case where the deposit is an organic substance such as wood, the smaller the particle size, the easier it is to corrode, and there is a case where metal corrosion occurs earlier than when the screen 57 is roughened.

  On the other hand, the crusher of this Embodiment is provided above the discharge conveyor 3, and is provided with the 1st discharge door 70 provided in the cover 60 of the power unit 4 so that opening and closing was possible. Thus, by providing the 1st discharge door 70 above the discharge conveyor 3, even if a suction thing (scattered crushed material, floating material, etc.) accumulates in the power unit 4, the 1st discharge door 70 is opened. It can be easily discharged onto the discharge conveyor 3. Further, according to the present embodiment, not only can the work of removing the cover be omitted as compared with the above-described method of removing the bottom cover, but also the deposit is discharged onto the discharge conveyor 3 with almost no scattering around the body. it can. Thereby, since the deposits scattered when cleaning the inside of the power unit 4 can be reduced, the trouble of cleaning associated therewith can be reduced. Thus, according to this Embodiment, since the deposit in the power unit 4 can be easily discharged | emitted on the discharge conveyor 3, the inside of the power unit 4 can be cleaned efficiently.

  Further, if the conveyor belt 24 is driven when the discharge door 70 is opened, the discharged materials are sequentially conveyed forward by the conveyor belt 24, so that the discharged materials can be easily discharged out of the machine body.

  Furthermore, since the first discharge door 70 of the crusher according to the present embodiment is provided below the engine 50, the deposits in the engine chamber 65, which tends to accumulate suction materials, are easily discharged out of the power unit 4. can do. Further, the crusher of the present embodiment includes a second discharge door 71 that is provided on the cover 60 so as to be openable and closable and is disposed below the control valve device 53 and above the discharge conveyor 3. Thereby, even when a suction material accumulates in the control valve chamber 67, the deposit can be easily discharged onto the discharge conveyor 3.

  In the crusher described above, the opening 72 (first discharge door 70) is provided on the bottom surface of the cover 60. However, the opening 72 is provided so as to cover a part of the side surface from the bottom surface of the cover 60. A first discharge door 70 may be provided. Thus, even if the discharge door 70 is provided, the deposit in the power unit 4 can be discharged onto the discharge conveyor 3 as in the above case.

  Further, the configuration of the first discharge door 70 may be configured as described below instead of the configuration described above.

FIG. 9 is an enlarged cross-sectional view of the vicinity of the opening 72 in a modification of the self-propelled crusher according to the embodiment of the present invention.
In this figure, a stopper 90 is provided on the bottom surface of the cover 60 to restrict the first discharge door 70 from rotating beyond a predetermined position, and an operator opens a door near the free end 70b of each door. A grip (gripping part) 91 for gripping is provided. The discharge door 70 is fixed to the cover 60 by a butterfly plate 92 at a fixed end 70a.

  The stopper 90 is provided along the rotation axis of each door of the discharge door 70, and restricts the rotation of the door by contacting the discharge door 70. Further, as shown in FIG. 9, the stopper 90 is provided so that the free end 70 b of each door is stationary above the discharge conveyor 3 when the first discharge door 70 is opened. 70 is stopped in an inverted C-shaped posture. Thereby, a discharge chute for the deposit is formed by the discharge door 70. The discharge chute can efficiently discharge the deposits and can further suppress the discharge of the discharged material from being scattered outside the discharge conveyor 3. If the discharge chute is formed by the discharge door 70 in this way, the discharge conveyor 3 is not properly positioned below the opening 72 (for example, the opening 72 is not positioned directly above the discharge conveyor 3 or the opening Even when the width of the portion 72 is larger than the width of the discharge conveyor 3), a discharge path capable of guiding the deposit onto the discharge conveyor 3 is formed by appropriately limiting the pivotable angle of each door. Can do. In the above case, the stopper 90 may be provided so that the free end 70b is disposed above the conveyor belt 24. In this way, deposits can be reliably discharged onto the discharge conveyor 3.

  By the way, although the above embodiment has been described mainly taking up a so-called wood crusher for crushing a wood-based material to be crushed, the present invention is directed to a processing device for processing a material to be processed and a processing device for processing the material. The present invention is applicable to so-called recycling machines in general having a discharge conveyor for discharging the processed material. Examples of such recycling machines include other crushers other than the above-described wood crushers, soil improvement machines, and the like.

  In addition to the above-mentioned wood crusher, the crusher includes various kinds of construction waste materials, industrial waste, or rocks generated at construction sites such as concrete lumps delivered at the time of building demolition and asphalt lumps discharged at road repairs. There are rocks, natural stones, etc. mined at mining sites and working faces, which are treated as objects to be crushed and finely crushed. In addition, the soil improvement machine can be used to improve the soil generated by construction, such as the construction generated soil generated at a construction site or the like and mixed with the soil improvement material in the site to produce an improved soil product for recycling, or Soil and sand excavated from the surface layer, etc. are reformed on the spot to generate improved soil that is backfilled to the surface layer to strengthen the ground, or the soil obtained by excavating a predetermined site in the road construction site etc. It is widely used for surface layer stabilization treatments such as generating improved soil to be laid as roadbed material by reforming on the spot.

  FIG. 10 is a side view showing the entire structure of the self-propelled crusher.

  The crusher illustrated in this figure is a so-called jaw crusher, and a traveling device 200 that enables the crusher to travel on its own, and a material to be crushed (processing object) such as construction waste and industrial waste generated at a construction site. A receiving hopper 201, and a grizzly feeder (feeding device) 202 that is positioned almost directly below the hopper 201 and conveys the object to be crushed received by the hopper 201 by a comb tooth plate (not shown) formed in a comb shape. The jaw crusher (processing device) 203 for crushing the object to be crushed supplied from the grizzly feeder 202 with a pair of opposed moving teeth and fixed teeth (both not shown), and the crushed material crushed by the jaw crusher 203 are conveyed. Then, a discharge conveyor 204 that discharges to the outside of the machine, and a power source for each operation device mounted on the crusher provided above the discharge conveyor 204 Engine and a power unit 205 with a built-in (not shown) or the like.

  In addition, there are various crushers such as so-called impact crusher, shredder, and roll crusher, but the present invention can also be applied to these.

  FIG. 11 is a side view showing the overall structure of the self-propelled soil improvement machine.

  The soil improvement machine shown in this figure includes a traveling device 300 that enables the soil improvement machine to travel on its own, a hopper 301 that receives earth and sand (processed material) such as construction generated soil generated at a construction site, and the like. Conveyor (feeding device) 302 that conveys the earth and sand, soil quality improving material supply device 303 that supplies the soil quality improving material to the earth and sand transported by the transport conveyor 302, and soil and soil quality improving material introduced from the conveyor 302 Mixing device (processing device) 304 for generating improved soil by mixing the soil, a discharge conveyor 305 for discharging the improved soil derived from the mixing device 304 to the outside of the machine, and a soil conditioner provided above the discharge conveyor 305. A power unit 306 having an engine (not shown) or the like that serves as a power source for each of the operating devices mounted therein is provided.

  Since these recycling machines are also provided with the power units 205 and 306 surrounded by the cover as described above, regular cleaning of the power units 205 and 306 is required. However, in these recycling machines, since the discharge conveyors 204 and 305 are provided below the power units 205 and 306, an opening is provided on the bottom surface of the cover of the power units 205 and 306 as in the above embodiment. An openable / closable discharge door can be attached to the opening. Therefore, the present invention can also be applied to the recycling machine as described above, so that the power units 205 and 306 can be efficiently cleaned.

  Further, in the above description, the case where the present invention is applied to a recycling machine capable of traveling on its own has been described as an example. However, the present invention is not limited thereto, and is lifted by a mobile recycling machine that can be pulled and traveled, for example, a crane or the like. The present invention can also be applied to a transportable portable recycling machine, and a stationary recycling machine arranged as a fixed machine in a plant or the like.

The side view which shows the whole structure of the self-propelled crusher which is embodiment of this invention. The top view which shows the whole structure of the self-propelled crusher which is embodiment of this invention. The rear view which shows the whole structure of the self-propelled crusher which is embodiment of this invention. The internal structure figure of the crushing device 13 vicinity provided in the self-propelled crusher which is embodiment of this invention. The top view of the internal structure of the power unit 4 provided in the self-propelled crusher which is embodiment of this invention. The cross-sectional view in the VI-VI cross section in FIG. 2 of the self-propelled crusher which is embodiment of this invention. The longitudinal cross-sectional view in the VII-VII cross section in FIG. 2 of the self-propelled crusher which is embodiment of this invention. FIG. 7 is a cross-sectional view of the state where the first discharge door 70 is opened in FIG. 6. FIG. 9 is an enlarged sectional view of the vicinity of the opening 72 in a modification of the self-propelled crusher according to the embodiment of the present invention. The side view which shows the whole structure of the self-propelled crusher which is one of the application destinations of this invention. The side view which shows the whole structure of the self-propelled soil improvement machine which is one of the application destinations of this invention.

Explanation of symbols

3 Discharge conveyor 4 Power unit 5 Track frame 11 Hopper 12 Feed conveyor 13 Crushing device 14 Press feeder device 50 Engine 51 Cooling device 53 Control valve device 56 Support member 60 Cover 70 First discharge door 70a Fixed end 70b Free end 71 Second discharge door 73 Wall surface 74 Aspirated material accumulation unit 202 Grizzly feeder 203 Jaw crusher 204 Discharge conveyor 205 Power unit 302 Conveyor 304 Mixing device 305 Discharge conveyor 306 Power unit

Claims (2)

Body frame,
A receiving portion that is provided at one upper portion in the longitudinal direction of the main body frame and receives a workpiece;
A processing device that is provided on an upper portion of the main body frame and processes an object to be processed received by the receiving unit;
A power unit provided at the upper part on the other side in the longitudinal direction of the main body frame, and having a power source and a cover surrounding the power source;
Discharge for discharging the processed material processed by the processing device, provided at an inclination so that the other end is located above the one end while passing under the power unit from one end provided below the processing device. In a recycling machine equipped with a conveyor,
An opening provided on the bottom surface of the cover so as to be located above the discharge conveyor ;
Attached openably to said cover to cover the opening, and two discharge doors opening in opposite directions,
A stopper provided on the bottom surface of the cover and restricting the rotation of the discharge door;
A recycling machine comprising: a wall surface provided in the cover and monotonously rising upward from an edge of the opening . The recycling machine according to claim 1 ,
The power unit has a control valve device,
A recycling machine, comprising: another discharge door that is openably and closably provided on the cover so as to be positioned below the control valve device and above the discharge conveyor, and discharges deposits in the power unit.

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