JP6207493B2 - Self-propelled processor - Google Patents

Description

  The present invention relates to a self-propelled processing machine including a conveyor.

  A self-propelled screen, which is a kind of self-propelled processing machine, classifies various types of rocks and construction waste materials (processed materials) generated at construction sites into a predetermined size by a sorting device (processing device), It is configured to be carried out of the machine body by a conveyor. In addition to this self-propelled screen, the self-propelled processing machine has a self-propelled crusher equipped with a crushing device that crushes the material to be crushed as a processing device, and a mixing device that mixes the soil to be modified with solidified material, etc. There is a self-propelled soil improvement machine or the like mounted as a processing device, and all of them are configured to carry out the processed material discharged from the processing device to the outside of the machine body by a conveyor.

  In these self-propelled processing machines, when a part of the processed material carried out by the conveyor is attached to the conveyor belt transport surface and is not discharged at the discharge end of the conveyor, the conveyor is supported. There is a possibility that the processed material may get caught in various rollers, or the processed material may fall and scatter from the surface of the conveyor belt. In view of this, there has been proposed a technique in which a scraper (cleaner) is applied to the surface of the conveyor belt at the lower half side of the pulley at the discharge end side of the conveyor to scrape off the processed material adhering to the surface of the conveyor belt (Patent Document 1, etc. See).

JP 2002-266371 A

  In general, since the self-propelled processing machine is transported in a state of being loaded on a loading platform such as a trailer, it is necessary to configure the airframe to be within the transport limit size. On the other hand, since it is necessary to secure the discharge height as much as possible while suppressing the inclination angle within a certain range, it is preferable that the conveyor for carrying out the processed material is configured as long as possible. Therefore, some relatively large self-propelled processors take a transport posture by folding the front end side of the conveyor during transport.

  However, when the scraper of Patent Document 1 is applied to a conveyor whose front end is folded during transportation, the scraper is positioned above the conveyor in the transportation posture. When the folded conveyor is inclined upward toward the tip, the position of the scraper may be the highest and exceed the transport limit height. In a self-propelled processing machine that has already been devised to ensure the function of increasing the discharge height as much as possible while keeping it within the transport limit dimensions, the scraper can be changed by changing the layout and dimensions of each part. However, it is not easy to reduce the overall height of the aircraft by the amount that exceeds the restricted transport height.

  This invention is made | formed in view of the said situation, and it aims at providing the self-propelled processing machine which can make a favorable scraping function and transportability make compatible.

  In order to achieve the above object, the present invention is directed to a traveling device, a main body frame provided on the traveling device, a processing device mounted on the main body frame, and the outside of the airframe from below the processing device. In the self-propelled processing machine provided with a discharge conveyor, the discharge conveyor is located above the upstream frame, a tail pulley provided on the upstream side of the upstream frame in the processed material conveyance direction, and the upstream frame. A downstream frame connected so as to be able to be folded, a head pulley provided on the downstream side of the downstream frame in the processed product conveying direction, a tail pulley, a conveyor belt wound around the head pulley, and a lower portion of the head pulley And a scraper attached to the downstream frame so as to be positioned on the downstream frame, and the scraper is connected to the downstream frame via a pin. And a scraping member attached to the support member so as to contact the conveyor belt at the head pulley, and the discharge conveyor is folded upward. When the support member is rotated from a position where the scraping member is in contact with the conveyor belt, the highest portion is lower than before the rotation.

  ADVANTAGE OF THE INVENTION According to this invention, the self-propelled processing machine which can make a favorable scraping function and transportability compatible can be provided.

It is a side view showing the whole composition at the time of working posture of a self-propelled screen concerning one embodiment of the present invention. FIG. 2 is a top view of FIG. 1. It is a rear view of FIG. It is a side view showing the whole composition at the time of transportation posture of the self-propelled screen concerning one embodiment of the present invention. It is the figure which looked at the downstream part of the discharge conveyor of the self-propelled screen concerning one embodiment of the present invention diagonally. It is the side view which looked at the downstream part at the time of the working posture of the self-propelled screen concerning one embodiment of the present invention from the body width direction. It is the side view which looked at the downstream part at the time of the transport attitude | position of the self-propelled screen which concerns on one Embodiment of this invention from the body width direction.

(Constitution)
1. Self-propelled processor A self-propelled processor according to an embodiment of the present invention will be described with reference to the drawings.

  In this embodiment, the case where the present invention is applied to a self-propelled screen will be described as an example. In addition to the self-propelled screen, a self-propelled crusher equipped with a crushing device for crushing an object to be crushed as a processing device. The present invention can also be applied to other self-propelled processing machines such as a self-propelled soil conditioner equipped with a mixing device that mixes the machined sand and the modified coping soil with a solidifying material or the like as a processing device.

  FIG. 1 is a side view showing the overall configuration of the self-propelled screen according to the present embodiment in a working posture, FIG. 2 is a top view thereof, and FIG. 3 is a rear view. FIG. 4 is a side view showing the overall configuration of the self-propelled screen according to the present embodiment when transported. In the following description, the left and right in FIG. 1 are the front and rear of the self-propelled screen, and the left and right in FIG. 3 are the left and right of the self-propelled screen.

  As shown in FIGS. 1 to 3, the self-propelled screen 100 according to this embodiment includes a traveling device 1, a main body frame 2, a tilting frame 4, a sieve device (processing device) 5, a hopper 6, a power unit 10, and a first unit. -Third discharge conveyors 7, 8, 9 are provided.

  The traveling device 1 is for causing the self-propelled screen 100 to travel by itself. The traveling device 1 includes a track frame 11, driving wheels 12, driven wheels 13, a driving device 14, and a crawler belt 15. The track frame 11 extends in the front-rear direction of the self-propelled screen 100. Drive wheels 12 and driven wheels 13 are provided at front and rear ends of the left and right sides of the track frame 11. The output shaft of the drive device 14 is connected to the drive wheel 12. The crawler belt 15 is wound around the driving wheel 12 and the driven wheel 13.

  The main body frame 2 is provided on the traveling device 1 so as to extend in the front-rear direction. One end of the tilting frame 4 is connected to the main body frame 2 via the rotating shaft 3 so as to be tiltable. The sieving device 5 is mounted on the tilting frame 4 via a spring member 16. The sieving device 5 is a vibration-type processing device that classifies a processed product (selected object) into a predetermined size. The hopper 6 is provided on the upstream side of the sieving device 5 in the processed product conveyance direction, and has a function of suppressing spillage of the processed product. The hopper 6 includes a cover plate 6A that covers the front surface and 6B and 6C that cover both side surfaces, and an upper surface and a rear surface are open. The plurality of groin plates 6A to 6C are rotatably attached to the sieve device 5.

  The power unit 10 is provided on the lower side of the third discharge conveyor 9 with respect to the traveling device 1 in the process conveyance direction and below the third discharge conveyor 9. Specifically, the power unit 10 is suspended from a support member 19 provided at the lower end of the other end side (free end side) of the tilting frame 4 via a mounting bracket (not shown) fixed with bolts or the like. It is supported and is located below the most upstream part (front end part) of the sieve device 5.

  The first discharge conveyor 7 is provided on one side of the main body frame 2 in an upwardly inclined manner, and discharges a sorting object larger than the first set particle size remaining on the upper screen of the sieving device 5 to the rear. . One end of the first discharge conveyor 7 is tiltably connected to the main body frame 2 via the rotation shaft 3, and is arranged to be inclined upward from the rotation shaft 3. Further, the first discharge conveyor 7 is supported by the cylinder 42 with respect to the main body frame 2, and the inclination angle is changed by expanding and contracting the cylinder 42. The first discharge conveyor 7 may be connected to the main body frame 2 so that one end side thereof can be tilted via a rotation shaft different from the rotation shaft 3.

  The second discharge conveyor 8 is provided on the one side of the main body frame 2 in the left direction in the direction orthogonal to the first discharge conveyor 7, and from the second set particle size remaining on the lower net of the sieve device 5. The processed material with a larger particle size is discharged to the left side. The second discharge conveyor 8 is configured to be bendable, and is bent upward along the airframe as shown in FIG. 4 when transported. As shown in FIG. 3, the second discharge conveyor 8 is supported by the cylinder 44 with respect to the main body frame 2, and the inclination angle is changed by extending and contracting the cylinder 44.

  The third discharge conveyor 9 is disposed upward and downward along the lower part of the tilting frame 4 from below the sieving device 5, the tip projects from the other end side of the tilting frame 4, and extends to the outside of the machine body. Yes. The third discharge conveyor 9 discharges a selection object smaller than the second set particle size that has passed through the lower screen of the sieving device 5 to the front.

  The third discharge conveyor 9 is configured such that a downstream portion 9A including a head pulley 22 (described later) can be bent upward with respect to the upstream portion 9B (see FIG. 4). In the transport posture shown in FIG. 4, the downstream portion 9A of the third discharge conveyor 9 is directed upward from the connecting portion 17 with the upstream portion 9B with the return surface (described later) side facing upward. Take an inclined posture. Further, the cylinder member 18 connected to the main body frame 2 and contracting the cylinder member 18 that supports the tilting frame 4 is contracted, and the tilting frame 4 is laid down with the rotating shaft 3 as a fulcrum, and includes the third discharge conveyor 9, the sieve device 5, the power unit 10, and the like. The unit is lowered overall as compared with the working posture shown in FIGS.

  Hereinafter, the third discharge conveyor 9 will be described in detail with reference to FIGS.

  5 is a perspective view of the downstream portion 9A of the third discharge conveyor 9. FIG. 6 is a side view of the downstream portion 9A in the working posture as seen from the width direction of the machine body, and FIG. 7 is the downstream portion 9A in the transportation posture. It is the side view which looked at from the body width direction. As shown in FIGS. 5 to 7, the third discharge conveyor 9 includes left and right conveyor frames 21, a head pulley 22, a tail pulley (not shown), a conveyor belt 23, a hydraulic motor 24, and a scraper 25. In the following description, the surface facing upward during operation and receiving and transporting the processed material discharged from the sieving device 5 is the transport surface 23a of the conveyor belt 23, and the surface facing downward during operation and the head pulley 22 The surface that returns and returns toward the tail pulley is defined as a return surface 23b of the conveyor belt 23. Note that a portion of the conveyor belt 23 that contacts the head pulley 22 and the tail pulley is distinguished from the conveying surface 23a and the return surface 23b as a return portion 23c.

  The conveyor frame 21 includes an upstream frame 21B and a downstream frame 21A. The downstream frame 21A is a frame of the downstream portion 9A of the third discharge conveyor 9, and the upstream frame 21B is a frame of the upstream portion 9B of the third discharge conveyor 9. The downstream frame 21A is connected to the upstream frame 21B so as to be folded upward (see FIG. 4).

  The downstream frame 21 </ b> A includes a bracket 26. The bracket 26 is attached to the front end of the downstream frame 21A via a bolt. A plurality of holes 38 a to 38 c are formed in the bracket 26.

  The head pulley 22 is rotatably provided at the front end of the downstream frame 21A (downstream end in the process conveyance direction), and the tail pulley is the rear end of the upstream frame 21B (upstream in the process conveyance direction). (End part) is rotatably provided. The conveyor belt 23 is wound around the head pulley 22 and the tail pulley. The hydraulic motors 24, 24 are connected to both ends of the head pulley 22, and rotate in the same direction at the same rotational speed. By driving the head pulley 22 with the hydraulic motor 24, the conveyor belt 23 is circulated between the head pulley 22 and the tail pulley.

  The conveyor surface 23a of the conveyor belt 23 is supported from the lower side by a plurality of support rollers (not shown) arranged at intervals in the workpiece conveyance direction, and is bent into a bowl shape having a depressed center in the width direction. ing. The return surface 23b of the conveyor belt 23 is supported from the lower side by a plurality of return rollers (not shown) arranged at intervals in the workpiece conveyance direction. Unlike the conveyance surface 23a, the return surface 23b is planarly supported by a return roller.

  The scraper 25 is for scraping off the processed material adhering to the conveyance surface 23 a of the conveyor belt 23, and is attached to the downstream frame 21 </ b> A so as to be positioned below the head pulley 22. The scraper 25 includes a support member 35 and a scraping member 36.

  The support member 35 supports the scraping member 36 and includes a rotating member 27, a plate 40, and a ring 43. As illustrated, the plate 40 and the ring 43 are provided in pairs.

  The rotation member 27 is rotatably connected to the downstream frame 21A by a pin 37. The rotating member 27 has a plurality of holes (not shown) (formed at positions corresponding to the bolts 33a to 33c shown in FIG. 6) formed at equal intervals on one end side (upper side in the posture shown in FIG. 6) and others. A plurality of holes 39a to 39c formed at equal intervals are provided on the end side (lower side in the posture shown in FIG. 6). The plurality of holes (not shown) and the plurality of holes 39a to 39c described above function as stoppers for fixing the rotating member 27 to the bracket 26 in respective postures before and after the rotation. In the working posture, the rotating member 27 includes a plurality of holes (not shown) formed in the rotating member 27 and a plurality of holes (not shown) formed in the bracket 26 (a plurality of holes (not shown) formed in the rotating member 27). It is fixed to the bracket 26 by inserting and tightening bolts 33a to 33c with respect to (formed at corresponding positions). Further, the rotating member 27 is fixed to the bracket 26 by inserting and tightening bolts 33a to 33c into holes 38a to 38c formed in the plurality of holes 39a to 39c and the bracket 26 in the transport posture (FIG. 7). See).

  The plate 40 is attached to the rotating member 27 and includes a protrusion 45 that protrudes outward in the width direction of the machine body. An adjustment screw 34 is inserted through the protrusion 45. The tip of the adjusting screw 34 is in contact with a plate 46 (described later). The ring 43 is attached to the front side of the plate 40.

  The scraping member 36 includes a plate 46, a ring 28, a pipe 29, a flat plate 30, an elastic member 41, a plate member 31, and a chip 32. As illustrated, the plate 46 and the ring 43 are provided in pairs.

  The plate 46 is disposed below the plate 40 so as to face the protruding portion 45. The ring 28 is attached to the front side of the plate 46. The pipe 29 extends in the width direction of the conveyor belt 23 and is held at both ends by the left and right rings 28 and 28 and the rings 43 and 43. The pipe 29 is fixed to the ring 28 by bolts 47. The flat plate 30 is attached to the pipe 29 and extends in the width direction of the conveyor belt 23 together with the pipe 29. The plate member 31 is connected to the flat plate 30 via the elastic member 41. The plate member 31 is bent toward the head pulley 22 at a position in the vicinity of the center portion, and is formed so that one end side is directed toward the return portion 23c.

  The chip 32 is detachably attached to the plate member 31. In this embodiment, by arranging a plurality of units including the plate member 31, the chip 32, and the elastic member 41 in the width direction of the conveyor belt 23, the chip 32 is arranged so as to cover the entire width of the return portion 23 c. . In the present embodiment, the case where the tip 32 is in contact with the return portion 23c at the head pulley 22 in the side cross section of the downstream frame 9A is illustrated (see FIG. 6). Therefore, the chip 32 may be slightly separated from the return portion 23c.

(Operation)
The processed material to be screened by the self-propelled screen 100 according to the present embodiment is, for example, concrete lump, debris, gravel, and the processed material put into the hopper 6 by a hydraulic excavator or the like is screened by the sieving device 5. As described above, the processed product having a large particle size is output by the first discharge conveyor 7, the processed product having a medium particle size is output by the second discharge conveyor 8, and the processed product having a small particle size is output by the third discharge conveyor 9. To be discharged. The small processed product discharged by the third discharge conveyor 9 and the medium processed product discharged by the second discharge conveyor 8 are reused as construction materials, for example. The processed product having a large particle size discharged by the first discharge conveyor 7 is crushed by, for example, a crusher (not shown), and then is again put into the sieving device 5 from the hopper 6 and sieved.

  At this time, the processed material on the transport surface 23a of the third discharge conveyor 9 is discharged by the return portion 23c and is collected at an appropriate collection location. However, since the particle size is small, a part of the processed material adheres to the return surface 23b. It can move toward the tail pulley. In response to this, by pressing the scraper 25 against the return portion 23c, the processed material adhering to the conveyor belt 23 is scraped off in the vicinity of the head pulley 22 and dropped onto the slope of the processed product discharged from the discharge end. .

Further, the self-propelled screen 100 of the present embodiment shifts from the working posture shown in FIG. 1 and the like to the transportation posture shown in FIG. 4 during transportation, and the height, width, and length of the fuselage are within the transportation restriction dimensions. Like that. The transition procedure from the working posture to the transportation posture is illustrated.
(1) The connection of the groin plates 6A to 6C of the hopper 6 is released, the groin plate 6A is tilted forward, and the groin plates 6B and 6C are respectively tilted outward (left and right direction).
(2) The cylinder member 42 is contracted as necessary, and the first discharge conveyor 7 is laid down with the rotation shaft 3 as a fulcrum.
(3) Fold the second discharge conveyor 8 as necessary.
(4) The cylinder member 18 is contracted to tilt the tilting frame 4 around the rotation shaft 3 as a fulcrum, and the unit composed of the third discharge conveyor 9, the sieve device 5, the power unit 10 and the like is lowered.
(5) The downstream portion 9A of the third discharge conveyor 9 is bent upward with respect to the upstream portion 9B.
(6) Pull out the bolts 33a to 33c and release the connection between the bracket 26 and the rotating member 27.
(7) The rotating member 27 is rotated around the pin 37 from the working posture (post-rotation posture) to the transport posture (post-rotation posture) (see FIG. 7).
(8) The holes 39a to 39c on the other end side of the rotating member 27 and the holes 38a to 38c of the bracket 26 are overlapped in the width direction of the fuselage, and the bolts 33a to 33c are inserted and the bracket 26 and the rotating member 27 are inserted. Are connected.

  In addition, when transforming the self-propelled screen 100 of the present embodiment from the transport posture to the working posture, the procedure is the reverse of the above. Note that the order of the procedures (1), (2), (3), (4), (5), and (6) to (8) can be appropriately changed.

(effect)
(1) In this embodiment, since the scraper 25 is applied to the return portion 23c of the conveyor belt 23 at the head pulley 22, a sufficient contact force with respect to the surface of the conveyor belt 23 is ensured and adhered to the surface of the conveyor belt 23. The treated product can be scraped off suitably.

  On the other hand, when the downstream frame 21A is folded upward to shift from the working posture to the transport posture, the scraper 25 is positioned above the conveyor belt 23. By turning the scraper 25 via the turning member 27, As shown in FIG. 7, the highest part can be lowered from the position A to the position A ′, and can be accommodated within the restricted transport height.

  As described above, in this embodiment, even when the scraper 25 is provided at an appropriate position without changing the dimensions or the like of the existing components in the transportation posture, the aircraft can be accommodated within the transportation restriction dimensions in the transportation posture. It is possible to achieve both a good scraping function and transportability.

  (2) In the present embodiment, the scraper 25 can be rotated via the rotating member 27 even in the working posture. Therefore, for example, when the scraper 25 gets in the way during the operation, for example, when the magnetic material is selected from the processed object using a magnet pulley as the head pulley, the scraper 25 is purposely removed by taking the transport posture only. Work can be omitted.

  (3) In this embodiment, since the scraper 25 is provided with a stopper, it is possible to prevent the rotating member 27 from flapping not only in the working posture but also in the transporting posture. In particular, since the common bolts 33a to 33c are used, the number of parts can be reduced, and the posture can be easily displaced.

(Other)
The present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.

  In the above-described embodiment, the configuration in which the scraper 25 is attached to the third discharge conveyor 9 is illustrated, but the scraper 25 may be attached to another discharge conveyor (other than the third discharge conveyor). For example, when the 1st discharge conveyor 7 is comprised so that bending is possible upwards, the effect mentioned above about the 1st discharge conveyor 7 is acquired by attaching the scraper 25 to the 1st discharge conveyor 7. FIG. Moreover, the effect mentioned above about the 2nd discharge conveyor 8 is acquired by attaching the scraper 25 to the 2nd discharge conveyor 8. FIG.

DESCRIPTION OF SYMBOLS 1 Traveling apparatus 2 Main body frame 5 Processing apparatus 7 1st discharge conveyor 8 2nd discharge conveyor 9 3rd discharge conveyor 21A Downstream frame 21B Upstream frame 22 Head pulley 23 Conveyor belt 25 Scraper 35 Support member 36 Scraping member 37 Pin 100 Self-propelled processor (self-propelled screen)

Claims (3)

A traveling device;
A main body frame provided on the traveling device;
A processing device mounted on the body frame;
In a self-propelled processing machine comprising a discharge conveyor extending from the lower side of the processing device to the outside of the machine body,
The discharge conveyor includes an upstream frame, a tail pulley provided on the upstream side of the upstream frame in the processed material conveyance direction, a downstream frame connected to the upstream frame so as to be folded back upward, and the downstream Attached to the downstream frame so as to be positioned below the head pulley, a head pulley provided on the downstream side of the side frame in the workpiece conveyance direction, the tail pulley and the conveyor belt wound around the head pulley. Scraper and
The scraper includes a support member rotatably connected to the downstream frame via a pin, and a scraping member attached to the support member so as to contact the conveyor belt at the head pulley. When the support member is rotated from a position where the scraping member is in contact with the conveyor belt in a state in which the discharge conveyor is folded upward, the highest portion is lower than before the rotation. Type processing machine. In the self-propelled processing machine according to claim 1,
When the support member is rotated from a position where the scraping member is in contact with the conveyor belt in a state where the discharge conveyor is folded upward, the highest part of the scraper becomes lower than a transport restriction height. Self-propelled processing machine. In the self-propelled processing machine according to claim 1,
The said scraper is provided with the stopper which fixes the said supporting member to the said downstream frame in each attitude | position before and behind the said rotation, The self-propelled processing machine characterized by the above-mentioned.

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