JP2013111522A - Jaw crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jaw crusher capable of securing sufficient positional accuracy of a tooth plate and capable of facilitating attachment work of the tooth plate.SOLUTION: The jaw crusher 30 includes a crusher frame 31, a fixed tooth 32 fixed on the crusher frame 31, and a movable tooth 33 forming a crushing chamber 38 between itself and the fixed tooth 32 and oscillating to the fixed tooth 32. The fixed tooth 32 and the movable tooth 33 include tooth plates 32a and 33a directly brought into contact with a crashed object in crushing work, and tooth plate frames 35 and 37 to which the tooth plates 32a and 33a are attached. The tooth plate frames 35 and 37 include a guide part 87 guiding the position of the tooth plates 32a and 33a in the width direction during attachment of the tooth plates 32a and 33a, a seat part 88 for supporting the tooth plates 32a and 33a, and a restricting part 89 for restricting the movement of the tooth plates 32a and 33a to the width direction.

Description

  The present invention relates to a jaw crusher for crushing an object to be crushed such as rock.

  A jaw crusher is a type in which a material to be crushed, such as rock, is put into a V-shaped crushing chamber between a fixed tooth and a moving tooth, which are installed opposite to each other, and the object to be crushed is crushed by the swinging motion of the moving tooth with respect to the fixed tooth Crushing device. In general, the moving teeth and fixed teeth of the jaw crusher are consumed due to wear, so the tooth plate portion that directly contacts the object to be crushed during crushing is a replacement part. In this type, the toothed plate of the moving tooth and the concavo-convex uneven portion provided on both sides of the lower end of the opposing surface of the supporting member (swing jaw) are engaged to shift the tooth plate in the width direction. Is disclosed (see Patent Document 1 and the like).

JP 2001-170507 A

  In the apparatus of Patent Document 1, as described above, two rectangular parallelepiped uneven portions are provided in the lower portion of the tooth plate, and the tooth plate is supported by placing the ceiling surface of the concave portion on the upper surface of the convex portion. Position shifting in the width direction of the tooth plate is prevented by the surface facing the outside in the width direction of the tooth plate (hereinafter simply referred to as the width direction) and the surface facing the inside of the convex portion.

  However, the concavo-convex part is a rectangular parallelepiped shape, and the opposing surfaces of the concavo-convex part facing in the width direction extend vertically to each other, and when the tooth plate is lowered and attached to the support member, it does not fit if the position accuracy in the width direction is poor. Therefore, it is necessary to be careful in the work of engaging the concavo-convex part. In addition, the crushing chamber of the jaw crusher (the space between the moving teeth and the fixed teeth) is narrow, and when the tooth plate is attached, the worker is forced to work on the jaw crusher. It is difficult for the operator to proceed with the work while visually observing the situation in which the two fit together. Therefore, it takes more time and effort to install the tooth plate than necessary.

  An object of the present invention is to provide a jaw crusher capable of ensuring sufficient positional accuracy of a tooth plate and facilitating the work of attaching the tooth plate.

  In order to achieve the above-mentioned object, the first invention provides a crushing device frame, a fixed tooth fixed to the crushing device frame, and a crushing chamber formed between the fixed tooth and swinging with respect to the fixed tooth. In the jaw crusher provided with a moving tooth, the fixed tooth and the moving tooth include a tooth plate that directly contacts a material to be crushed during a crushing operation, and a tooth plate frame to which the tooth plate is attached. The plate frame includes a guide portion that guides the position in the width direction of the tooth plate when the tooth plate is attached, a seat portion that supports the tooth plate, and a restraining portion that restrains the movement of the tooth plate in the width direction. It is characterized by having.

  According to a second invention, in the first invention, the guide portion includes a guide surface that contacts a tapered or rounded guided surface provided on the tooth plate side and has a shape corresponding to the guided surface. It is installed in the lower part of the tooth plate frame.

  According to a third aspect, in the second aspect, the surface of the tooth plate facing the tooth plate frame is formed point-symmetrically with respect to the center of the surface.

  According to a fourth invention, in the second or third invention, the guide portion serves as the seat portion and the restraining portion.

  ADVANTAGE OF THE INVENTION According to this invention, while ensuring sufficient positional accuracy of a tooth plate, the operation of attaching a tooth plate can be facilitated.

It is a side view showing the whole crusher structure provided with the jaw crusher concerning a 1st embodiment of the present invention. It is a top view showing the whole crusher structure provided with the jaw crusher concerning a 1st embodiment of the present invention. It is a sectional side view showing the internal structure of a jaw crusher concerning a 1st embodiment of the present invention, and is a figure showing the state where a moving tooth is in a work position. It is a sectional side view showing the internal structure of the jaw crusher concerning a 1st embodiment of the present invention, and is the figure showing the state where the moving tooth was separated from the fixed tooth rather than the operation position. It is a perspective view of the moving tooth with which the jaw crusher which concerns on the 1st Embodiment of this invention was equipped. It is a side view of the moving tooth with which the jaw crusher which concerns on the 1st Embodiment of this invention was equipped. It is a perspective view of a moving tooth with which the jaw crusher concerning a 1st embodiment of the present invention was equipped, is a figure which separated a movable tooth plate and expressed a tooth plate attachment surface of a swing jaw. It is a perspective view of a moving tooth with which a jaw crusher concerning a 1st embodiment of the present invention was equipped, is a figure which separated a swing jaw and showed a back of a movable tooth board. It is the 1st figure showing typically the attachment method to the swing jaw of the movable tooth board in the jaw crusher concerning a 1st embodiment of the present invention. It is the 2nd figure showing typically the attachment method to the swing jaw of the movable tooth board in the jaw crusher concerning a 1st embodiment of the present invention. It is the perspective view of the moving tooth with which the jaw crusher which concerns on the 2nd Embodiment of this invention was equipped, is a figure which separated the movable tooth plate and represented the tooth plate attachment surface of the swing jaw. It is the perspective view of the moving tooth with which the jaw crusher which concerns on the 2nd Embodiment of this invention was equipped, is a figure which separated the swing jaw and showed the back surface of a movable tooth plate. It is the 1st figure showing typically the attachment method to the swing jaw of the movable tooth board in the jaw crusher concerning a 2nd embodiment of the present invention. It is the 2nd figure showing typically the attachment method to the swing jaw of the movable tooth board in the jaw crusher concerning a 2nd embodiment of the present invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a side view showing the overall structure of a crusher equipped with a jaw crusher according to a first embodiment of the present invention, and FIG. 2 is a plan view thereof. In the following description, the right and left in FIG.

  The crusher shown in FIG. 1 and FIG. 2 is for mining various kinds of construction waste, industrial waste, or rock mining that occurs at construction sites such as concrete lumps carried out at the time of building demolition and asphalt lumps discharged at road repair Rocks, natural stones, etc. mined at the site or face are used as crushed objects, and these crushed objects are received and crushed. The crusher of the present embodiment includes a traveling body 1 and a crushing function component 2 mounted on the traveling body 1 so that the traveling body 1 can travel by itself. However, the present invention can be applied not only to such a self-propelled crusher but also to a crusher that can be towed and a stationary crusher.

  The traveling body 1 includes a left and right traveling device 3 and a main body frame 4 provided on the upper portion of the traveling device 3. The traveling device 3 has an output shaft coupled to a track frame 5, a driven wheel 6 and a drive wheel 7 provided at both ends of the track frame 5, a crawler belt 8 wound around the driven wheel 6 and the drive wheel 7, and a shaft of the drive wheel 7. The traveling drive device 9 is provided. The main body frame 4 is provided on the track frame 5 and extends substantially horizontally in the front-rear direction.

  The crushing function component 2 crushes the crushed object supplied from the hopper 10 that receives the object to be crushed, the size of the crushed object received in the hopper 10, and supplies the crushed object to the subsequent process. The device includes a jaw crusher 30 which is a device, a conveyor 40 for carrying out crushed materials crushed by the jaw crusher 30 to the outside of the machine, and a power unit (power unit) 50 having a built-in power source for operating devices mounted in various parts of the machine body. .

  The hopper 10 is a frame-like member that expands upward, and is fixed to the support member 11 provided at the upper part of the rear portion of the main body frame 4 via support posts 12 and 13. As shown in FIG. 2, the hopper 10 surrounds the left and right side portions and the rear portion of the upper portion of the vibration feeder 20, while the front portion of the vibration feeder 20, that is, the portion facing the jaw crusher 30 is open.

  The vibration feeder 20 is a grizzly feeder in the present embodiment, and is positioned behind the jaw crusher 30 below the hopper 10, and its frame-shaped main body (feeder main body) 21 is a spring 22 separately from the hopper 10. Is supported by the support member 11. As shown in FIG. 2, a bread deck 23 for receiving the material to be crushed is provided in the latter half of the feeder main body 21, and a comb-like sieve member (grizzly) 24 for selecting the particle size of the material to be crushed is shown in the first half. Is provided. A vibrator 26 (feeder drive device) that vibrates the feeder body 21 is fixed to the lower portion of the feeder body 21. A chute 29 is provided below the sieving member 24 to guide the fine particles removed from the sieving member 24 onto the conveyor 40.

  The jaw crusher 30 is positioned in front of the hopper 10 and the vibration feeder 20 and is supported at the center in the front-rear direction of the main body frame 4. Although details will be described later with reference to FIG. 3 and the like, the jaw crusher 30 is provided with fixed teeth and moving teeth, and the space between the fixed teeth and moving teeth, whose diameter is reduced downward, is crushed. A chamber is defined. The upper end of the moving tooth swing jaw is connected to a flywheel (not shown), and when the rotational power of a jaw crusher driving device (not shown) is transmitted to the flywheel, the rotational movement of the flywheel is reduced. This is converted into a swinging motion of the moving tooth, whereby the moving tooth swings substantially in the front-rear direction with respect to the fixed tooth.

  A maintenance floor 60 is provided around the jaw crusher 30. The maintenance floor 60 is provided in the upper part of the main body frame 4 and has a portion extending in the front and rear directions on both the left and right sides of the jaw crusher 30 and a portion extending in the left and right direction between the jaw crusher 30 and the power unit 50. It is developed in a U shape with the opening facing backward in plan view. In the maintenance floor 60, rear end portions of the jaw crusher 30 located on the left and right extend to the vicinity of the vibration feeder 20 and face the left and right of the front portion of the vibration feeder 20. The front edge of the left and right wall surfaces of the hopper 10 has an upper edge formed obliquely so as to decrease in height toward the front, and when an operator goes back and forth between the maintenance floor 60 and the sieve member 24 In addition, the hopper 10 does not become an obstacle. A fence 61 is installed at the edge on the maintenance floor 60. Note that a ladder 62 for ascending to the maintenance floor 60 is provided on at least one of the left and right side portions of the machine body. The ladder 62 rises from above the crawler belt 8 to the maintenance floor 60.

  The conveyor 40 includes a conveyor frame 41 suspended from the main body frame 4 and the like, driven wheels and driving wheels (both not shown) provided at both ends of the conveyor frame 41, a conveyor belt 44 wound around the driven wheels and driving wheels, And a conveyor driving device (not shown) for rotating the driving wheel. When the driving wheel is driven to rotate by the conveyor driving device, the conveyor belt 44 wound around the driven wheel circulates and drives. The conveyor 40 extends forward from a position below the chute 29 and the jaw crusher 30 (near the rear end portion of the crawler belt 8) between the left and right track frames 5, and a lower position of the power unit 50 (near the front end portion of the crawler belt 8). ) And is tilted to stand up obliquely, and extends to the vicinity of the entire height of the airframe through the vicinity of the lower portion of the front end of the power unit 50 while maintaining the inclination angle.

  Above the conveyor 40, a magnetic separator 45 for removing magnetic foreign matters such as reinforcing bars in the crushed material to be discharged is provided. The magnetic separator 45 is suspended from an arm member 46 provided at the front portion of the power unit 50. The drive wheel and the driven wheel (both not shown) and the drive wheel and the driven wheel are wound around the conveyor 40. Magnetic separator belt 49 that circulates and drives in a direction orthogonal to the extending direction (left and right direction), and magnetic force generation means (not shown) provided in a space covered by magnetic separator belt 49 between the drive wheel and the driven wheel ).

  The power unit 50 is supported on an upper portion of the front side portion of the main body frame 4 and is located on the front side of the jaw crusher 30. Although not particularly illustrated, the power unit 50 controls the flow direction and flow rate of the engine serving as the power source of the crusher, the hydraulic pump driven by the engine, and the pressure oil discharged from the hydraulic pump. And a control valve device for supplying to the corresponding hydraulic actuator.

  3 and 4 are side sectional views showing the internal structure of the jaw crusher 30. FIG. 3 shows a state where the moving teeth are in the working position, and FIG. 4 shows a state where the moving teeth are separated from the fixed teeth rather than the working positions. ing.

  3 and 4, the jaw crusher 30 includes a crusher frame 31 fixed to the main body frame 4, a fixed tooth 32 fixed to the crusher frame 31, a moving tooth 33 that swings with respect to the fixed tooth, and a moving tooth 33. Is provided with a toggle plate 34 for supporting the lower portion of the moving tooth 33 from the back side (front side in this case).

  The fixed tooth 32 includes a tooth plate frame 35 fixed to the crushing device frame 31 and a fixed tooth plate 32a attached to the front surface (moving tooth 33 side) of the tooth plate frame 35. The moving teeth 33 include a swing jaw 37 that also serves as a tooth plate frame swingably attached to the crushing device frame 31 via an eccentric shaft 36 of a flywheel (not shown), and a rear surface (fixed tooth) of the swing jaw 37. 32 is provided with a movable tooth plate 33a attached to the (32 side).

  The fixed tooth plate 32a and the movable tooth plate 33a are wear parts that are in direct contact with the object to be crushed during the crushing operation, and are replacement parts. The fixed tooth plate 32a and the movable tooth plate 33a are arranged to face each other, and form a V-shaped crushing chamber 38 having a diameter reduced downward. The object to be crushed supplied to the crushing chamber 38 is crushed by being pinched by the fixed teeth 32 and the moving teeth 33 by the swinging motion of the moving teeth 33. The particle size of the crushed material discharged from the jaw crusher 30 is defined by the discharge opening of the crushing chamber 38, that is, the minimum gap between the fixed tooth plate 32a and the movable tooth plate 33a, specifically, the gap at the lower end. Although not shown in FIGS. 3 and 4, the cheek plates 41 a and 41 b are exchangeably attached to the crushing device frame 31, and the cheek plates 41 a and 41 b constitute left and right side walls of the crushing chamber 38.

  Further, in the space opposite to the crushing chamber 38 (on the right side in FIG. 3) with the moving teeth 33 interposed therebetween, for example, when a crushing chamber 38 is overloaded due to the occurrence of a foreign object or the like, the crushing device 30. An overload protection device 70 that protects the above components from an excessive load is installed. The overload protection device 70 includes a jack 71 that retracts from the working state of FIG. 3 and opens the crushing chamber 38 as shown in FIG. 4 when an excessive crushing reaction force acts on the swing jaw 37.

  The jack 71 is fixed to the crushing device frame 31, and toggle sheets 73 and 74 are provided at the tip of the rod 72 and the lower part of the front surface of the swing jaw 37, respectively. Both ends of the interposed toggle plate 34 are in contact with the toggle sheets 73 and 74. The lower portion of the jack 71 and the portion near the lower end of the front surface of the swing jaw 37 are connected by a hydraulic cylinder 75 (see FIG. 4, not shown in FIG. 3). The lower end of the swing jaw 37 is urged toward the jack 71 by the hydraulic cylinder 75, and the toggle plate 34 is sandwiched and held between the toggle sheets 73 and 74. In the present embodiment, the swing cylinder 37 is biased toward the jack 71 by the hydraulic cylinder 75. However, instead of the hydraulic cylinder 75, the swing jaw 37 is biased toward the jack 71 by a spring. Also good.

  FIG. 5 is a perspective view of the moving tooth 33, and FIG. 6 is a side view.

  As shown in these drawings, the movable tooth plate 33a has a surface facing the crushing chamber 38 (a surface facing the fixed tooth plate 32a, hereinafter referred to as a “crushing surface”) in which a plurality of peaks 81 and valleys 82 are alternately continued. It is formed in a corrugated shape. The peaks 81 and the valleys 82 extend in the vertical direction and are aligned in the width direction (left and right direction) of the movable tooth plate 33a, and the tops of the peaks 81 and the valleys 82 have a predetermined curvature when viewed in a cross section cut along a horizontal plane. It has an R shape. Further, in the present embodiment, the crushing surface of the movable tooth plate 33a is formed in a concave shape with the upper and lower portions slightly protruding toward the crushing chamber 38 as compared with the central portion in a side view (shown in FIG. 6). Yes. The configuration of the fixed tooth plate 32a is substantially the same.

  The support structure of the movable tooth plate 33a will be described. First, the lower end portion of the swing jaw 37 that also serves as a tooth plate frame is a receiving member 83 that receives the movable tooth plate 33a. The receiving member 83 is fitted to the swing jaw 37 from the side of the crushing chamber 38 by an inlay structure, and in the case of the present embodiment, the receiving member 83 is fastened to the swing jaw body with bolts and nuts 84. Instead of being a detachable part, it can be formed integrally with the swing jaw body. Further, a wedge member 85 is provided on the upper portion of the tooth plate mounting portion of the swing jaw 37. The wedge member 85 is advanced and retracted with respect to the swing jaw 37 by a bolt 86. The advancing axis of the bolt 86 is inclined downward toward the swing jaw 37 with respect to the normal of the tooth plate mounting surface 90 (see FIG. 6) of the swing jaw 37 in the side view of the moving tooth 33 (shown in FIG. 6). When the bolt 86 is tightened, the wedge member 85 is lowered obliquely toward the swing jaw 37, and the movable tooth plate 33a is gripped and fixed so as to be sandwiched between the wedge member 85 and the receiving member 83. . The tooth plate support structure described in this paragraph is the same for the fixed tooth plate 32a.

  FIG. 7 is a perspective view of the moving tooth 33 showing the tooth plate mounting surface 90 of the swing jaw 37 with the movable tooth plate 33a separated, and FIG. 8 shows the back surface 33b of the movable tooth plate 33a with the swing jaw 37 shown apart. It is the perspective view of the moving tooth 33 shown.

  As shown in FIG. 7, the swing jaw 37, which also serves as the tooth plate frame, supports the load of the movable tooth plate 33a and the guide portion 87 that guides the position in the width direction of the movable tooth plate 33a when the movable tooth plate 33a is attached. And a restraining portion 89 that restrains the movement of the movable tooth plate 33a in the width direction. In the present embodiment, the guide portion 87 and the seat portion 88 are provided on the receiving member 83, and the restraint portion 89 is provided on the swing jaw main body. On the other hand, as shown in FIG. 8, the back surface 33b of the movable tooth plate 33a has a shape corresponding to the tooth plate mounting surface 90 of the swing jaw 37, and corresponds to the guide portion 87, the seat portion 88, and the restraining portion 89, respectively. A guided portion 91, a seating portion 92, and a restrained portion 93 are provided.

  The seat portion 88 is located on the front surface of the receiving member 83 and protrudes from the tooth plate attachment surface 90 toward the crushing chamber 38, and the upper surface is a seat surface 88a on which the seat portion 92 of the movable tooth plate 33a is seated. The seat surface 88 a extends in the width direction of the moving tooth 33, and when viewed from the side of the moving tooth 33, the seat surface 88 a is inclined downward toward the front with respect to the normal line of the tooth plate mounting surface 90 of the swing jaw 37. doing. On the other hand, the seating portion 92 of the movable tooth plate 33a corresponding to the seat portion 88 is a recess that is retracted from the back surface 33b of the movable tooth plate 33a toward the crushing chamber 38, and the ceiling surface is seated on the seat surface 88a of the swing jaw 37. It is a seating surface 92a. The seating surface 92a extends in the width direction of the moving tooth 33. When viewed from the side of the moving tooth 33, the seating surface 92a is inclined downward and forward with respect to the normal line of the back surface 33b of the movable tooth plate 33a. Yes. Therefore, when the seating surface 92a is seated on the seat surface 88a, the back surface 33b of the movable tooth plate 33a is pressed against the tooth plate mounting surface 90 of the swing jaw 37 by the weight of the movable tooth plate 33a or the pressing force from the wedge member 85. It is supposed to be.

  The guide part 87 is a convex part protruding upward from the seat part 88, and the position in the width direction of the swing jaw 37 is not necessarily limited, but is located at the center in the present embodiment. The guide portion 87 has two guide surfaces 87a and 87b (see FIG. 7). The guide surfaces 87 a and 87 b are provided on the left and right side portions of the guide portion 87, and are formed as tapered surfaces that are inclined upward toward the center in the width direction of the swing jaw 37. The guided portion 91 of one movable tooth plate 33a is a recess provided in the seating surface 92a, and has two guided surfaces 91a and 91b that are inclined corresponding to the guiding surfaces 87a and 87b. The guided surfaces 91 a and 91 b are provided on the left and right side portions of the guided portion 91, and are formed as tapered surfaces inclined upward in the center in the width direction of the swing jaw 37. That is, the guide surfaces 87a and 87b have shapes corresponding to the guided surfaces 91a and 91b of the movable tooth plate 33a, and when the movable tooth plate 33a is lowered when attached to the swing jaw 37, the guided surfaces 91a and 91b The position in the width direction of the movable tooth plate 33a is guided in contact with 91b. At this time, the height of the guide portion 87 from the seat portion 88 is equal to or less than the depth dimension of the guided portion 91 from the seating surface 92a, and the width of the lower end portion of the guide portion 87 is the width dimension of the lower end portion of the guided portion 91. In the state where the seating surface 92a is seated on the seat surface 88a, each surface of the guide portion 87 is just in contact with each surface of the guided portion 91, or each surface of the guided portion 91 is set. There is a slight gap between them.

  In the present embodiment, the guide surfaces 87a and 87b and the guided surfaces 91a and 91b are described as examples. However, in order to perform the guide function, for example, a round surface shape (arc-shaped curved surface) is sufficient. ).

  The restraining portion 89 is a convex portion protruding from the tooth plate attachment surface 90 of the swing jaw 37 toward the crushing chamber 38, and two surfaces facing the width direction of the moving tooth 33 cause the movement of the movable tooth plate 33a in the left-right direction. The restraining surfaces 89a and 89b are restrained. The restraining surfaces 89 a and 89 b are vertical surfaces orthogonal to the tooth plate attachment surface 90. The constrained portion 93 of one movable tooth plate 33a is a recess that is retracted from the back surface 33b of the movable tooth plate 33a toward the crushing chamber 38, and the surfaces on both sides in the width direction of the dynamic tooth 33 are the constraining surfaces 89a and 89b. The constrained surfaces 93a and 93b are in contact with each other. The restrained surfaces 93a and 93b are vertical surfaces orthogonal to the back surface 33b of the movable tooth plate 33a. The constraining portion 89 has a width dimension in the width direction of the moving tooth 33 that matches the width of the constrained portion 93, but a negative tolerance with respect to the constrained portion 93 so that the constrained portion 93 can be fitted, or this According to the above, the dimensional difference is processed to such an extent that rattling in the width direction is suppressed. The vertical dimension of the restraining part 89 is set smaller than the vertical dimension of the restrained part 93, and the restrained part 89 is attached to the top and bottom of the restraining part 89 with the movable tooth plate 33 a attached to the swing jaw 37. There is a slight gap between the upper and lower surfaces of the restraining portion 93.

  In addition, although the position of the restraint part 89 in the toothplate attachment surface 90 and by extension, the position of the restraint part 93 in the movable toothplate 33a are not necessarily limited, in this Embodiment, the restraint part 89 and the restraint part 93 are not limited. Are respectively located at the centers of the tooth plate attachment surface 90 and the back surface 33b of the movable tooth plate 33a. And the back surface 33b of the movable tooth plate 33a is formed in point symmetry about the center. That is, the back surface 33b of the movable tooth plate 33a has a restraining portion 92 at the center, and has a guided portion 92 and a seating portion 92 on the top and bottom. The crushing surface of the movable tooth plate 33a is worn particularly near the discharge port (lower end) by the crushing operation, and when the wear proceeds, the movable tooth plate 33a is turned upside down and attached to the swing jaw 37. Yes.

  In addition, the guide structure of the width direction position of the above tooth plate, and the restraint structure of the movement of the width direction are applicable also to the fixed tooth 32 side.

  Next, the operation of the crusher configured as described above will be described.

  When the object to be crushed is input by a hydraulic excavator or the like, the input object to be crushed is guided onto the vibration feeder 20 by the hopper 10. The object to be crushed on the pan deck 23 that is vibrated together with the feeder main body 21 by the vibrator 26 is conveyed to the front sieve member 24 by vibration. In the sieving member 24, components smaller than the selected particle size of the sieving member 24 (slack, earth and sand, etc.) fall from the gaps of the sieving member 24, are separated from the material to be crushed, and pass through the chute 29 on the conveyor 40 Guided near the edge. On the other hand, an object to be crushed larger than the selected particle size of the sieve member 24 passes through the sieve member 24 and is supplied to the jaw crusher 30. The object to be crushed supplied to the jaw crusher 30 is crushed by the fixed teeth 32 and the moving teeth 33 and crushed to a predetermined particle size according to the exit gap. The crushed material discharged from the jaw crusher 30 is guided onto the conveyor 40, merges with the fine particles guided through the chute 29, transported forward (right side in FIG. 1) by the conveyor 40, and discharged outside the machine. Is done.

  In the middle of carrying out by the conveyor 40, when magnetic foreign matters such as reinforcing bars are mixed in the crushed material or the like, the magnetic foreign matters are adsorbed and removed by the magnetic separator 45. In the magnetic separator 45, magnetic foreign matter is adsorbed to the magnetic separator belt 49 by the magnetic force from the magnetic force generating means that acts on the crushed material on the conveyor 40 through the magnetic separator belt 49, and is circulated by the magnetic separator belt 49. A magnetic foreign material is conveyed to the side of the conveyor 40 and dropped.

  Further, in the present embodiment, the case where the fine particles dropped from the sieve member 24 are joined with the crushed material via the chute 29 is illustrated, but a side conveyor extending to the side of the machine body may be attached to the lower part of the chute 29. In this case, fine particles are discharged to the side of the aircraft separately from the crushed material.

  Here, FIGS. 9 and 10 are diagrams schematically showing a method of attaching the movable tooth plate 33a to the swing jaw 37. FIG.

  When the movable tooth plate 33a is attached to the swing jaw 37, the structure on the upper side of the swing jaw 37 protruding from the tooth plate attachment surface 90 to the crushing chamber 38 side is avoided, as shown by the two-dot chain line in FIG. The movable tooth plate 33a is lowered obliquely with respect to the plate attachment surface 90, and first, the lower end portion of the movable tooth plate 33a is placed on the receiving member 83 as shown in FIG. Then, the movable tooth plate 33a is tilted toward the swing jaw 37 with the receiving member 83 as a fulcrum, the back surface 33b is brought into contact with the tooth plate mounting surface 90, and the upper portion of the movable tooth plate 33a is pressed by the wedge member 85 to move. The tooth plate 33a is fixed. The mounting operation of the fixed tooth plate 32a is basically the same.

  According to the present embodiment, the guide portion 87 is first provided in the swing jaw 37 that also serves as the tooth plate frame, so that the guided portion 91 of the movable tooth plate 33a is in the process from the state of FIG. 9 to the state of FIG. When the movable tooth plate 33a is guided in the width direction and the seat portion 92 is seated on the seat portion 88, the position of the movable tooth plate 33a in the width direction is determined at a predetermined position. Since the seating portion 92 is seated on the seat portion 88, the height position of the movable tooth plate 33a is also determined at a predetermined position. Therefore, when the movable tooth plate 33a is tilted to the tooth plate attachment surface 90 from the state of FIG. 38 and the movable tooth plate 33a, the restraining portion 89 and the restrained portion 93 are smoothly fitted to each other.

  If the movable tooth plate 33a is lowered at the position in the width direction in this way, the movable tooth plate 33a is positioned (centered) in the width direction and is seated on the seat portion 88. Even in a situation where it is difficult for the operator to confirm how the 37 and the movable tooth plate 33a fit together, the positioning operation in the width direction of the movable tooth plate 33a is not required, and the subsequent restraining portion 89 and restrained portion 93 are not required. Can be fitted simply by tilting the movable tooth plate 33a.

  Therefore, according to the present embodiment, it is possible to secure sufficient positional accuracy in the width direction and the vertical direction of the tooth plate, and to facilitate the work of attaching the tooth plate. Thereby, the tooth plate replacement time can be shortened and the labor of the replacement work can be reduced, the jaw crusher operation stop time can be shortened, and the work efficiency can be improved. Moreover, since the movement of the tooth plate in the width direction and the vertical direction can be firmly restrained, the displacement of the tooth plate with respect to the tooth plate frame during the crushing operation can also be suppressed.

  FIG. 11 is a perspective view of the moving teeth provided in the jaw crusher according to the second embodiment of the present invention, and shows the tooth plate mounting surface 90 of the swing jaw 37 with the movable tooth plate 33a separated. FIG. 12 is a view showing the back surface 33b of the movable tooth plate 33a with the swing jaw 37 separated. These drawings correspond to FIGS. 7 and 8, and the same parts as those in the above-described drawings are denoted by the same reference numerals as those in the above-mentioned drawings, and description thereof is omitted.

  As shown in FIG. 11 and FIG. 12, this embodiment is different from the first embodiment in that the guide portion functions as a seat portion and a restraint portion. The guide portion 94 in the present embodiment is a recess formed by cutting out the front surface of the receiving member 83 protruding from the tooth plate attachment surface 90 toward the crushing chamber 38, and the position in the width direction of the swing jaw 37 is not necessarily limited. However, in the present embodiment, it is located at the center. The surface of the guide portion 94 facing the movable tooth plate 33 a is flush with the tooth plate mounting surface 90 of the swing jaw 37 (there is no step between the tooth plate mounting surface 90) or the crushing chamber 38 than the tooth plate mounting surface 90. It is slightly retracted to the opposite side and is parallel to the tooth plate attachment surface 90. The guide part 94 has two guide surfaces 94a and 94b (see FIG. 11). The guide surfaces 94a and 94b are provided on the left and right side portions of the guide portion 94, and are formed as tapered surfaces inclined downward toward the center in the width direction of the swing jaw 37. Further, the guide portion 94 divides the rear surface (the surface on the crushing chamber 38 side) of the receiving member 83 into left and right, and the guide surfaces 94a and 94b extend linearly and smoothly from the upper surface to the lower surface of the receiving member 83. Exist.

  On the other hand, as shown in FIG. 12, a guided portion 95 corresponding to the guide portion 94 is provided below the back surface 33b of the movable tooth plate 33a. It is a convex part formed in the lower end part of the back surface 33b of this guided part 95 in the downward convex shape, and the surface facing the swing jaw 37 is continuous with the back surface 33b. However, the lower end position of the guided portion 95 is higher than the lower end position of the crushing surface of the movable tooth plate 33a, and the guided portion 95 does not come out of the crushing surface when viewed from the crushing chamber 38 side. The guided portion 95 has two guided surfaces 95a and 95b inclined corresponding to the guiding surfaces 94a and 94b. The guided surfaces 95 a and 95 b are provided on the left and right side portions of the guided portion 95, and are formed as tapered surfaces that are inclined downward toward the center side in the width direction of the swing jaw 37. That is, the guide surfaces 94a and 94b on the swing jaw 37 side correspond to the guided surfaces 95a and 95b of the movable tooth plate 33a, and when the movable tooth plate 33a is attached to the swing jaw 37, the guide surfaces 94a and 94b are lowered. The width direction position of the movable tooth plate 33a is guided in contact with the guided surfaces 95a and 95b. The guided surfaces 95a and 95b extend linearly and smoothly from the upper end to the lower end of the guided portion 95, and the inclination angles thereof are matched to the inclination angles of the guide surfaces 94a and 94b, respectively.

  At this time, in the present embodiment, the width of the upper end portion of the guide portion 94 on the receiving side is set smaller than the width dimension of the upper end portion of the guided portion 95. Therefore, when the guided surfaces 95a and 95b are in close contact with the guide surfaces 94a and 94b, the upper surface of the receiving member 83 does not contact the movable tooth plate 33a, and the weight of the movable tooth plate 33a is reduced by the guide surfaces 94a and 94b. Supported. Further, since the guide surfaces 94a and 94b and the guided surfaces 95a and 95b are in close contact with each other without any gap, the movement of the movable tooth plate 33a in the left-right direction is also restrained. Based on such a principle, the guide portion 94 of the present embodiment also serves as a seat portion and a restraint portion.

  Other configurations are the same as those of the first embodiment.

  In addition, the guide structure of the width direction position of the above tooth plate, and the restraint structure of the movement of the width direction are applicable also to the fixed tooth 32 side.

  13 and 14 are diagrams schematically showing a method of attaching the movable tooth plate 33a to the swing jaw 37 in the present embodiment.

  When the movable tooth plate 33a is attached to the swing jaw 37, the structure on the upper side of the swing jaw 37 protruding from the tooth plate attachment surface 90 to the crushing chamber 38 side is avoided, as shown by the two-dot chain line in FIG. The movable tooth plate 33 a is lowered obliquely with respect to the plate attachment surface 90. Then, when the guided portion 95 descends inside the guide portion 94 and the position of the movable tooth plate 33a is biased in the width direction, the guided surface 95a or 95b hits the guide surface 94a or 94b and the movable tooth plate 33a. When the other guided surface 95b or 95a contacts the guide surface 94b or 94a, the centering of the movable tooth plate 33a is completed (the state of FIG. 14). The movable tooth plate 33a is tilted toward the swing jaw 37 with the contact portion between the guide surfaces 94a and 94b and the guided surfaces 95a and 95b as fulcrums, and the back surface 33b of the movable tooth plate 33a is moved to the tooth plate attachment surface 90. Contact. In this state, the guide surfaces 94a and 94b and the guided surfaces 95a and 95b are in close contact with each other, the weight of the movable tooth plate 33a is stably supported by the guide surfaces 94a and 94b, and the width of the movable tooth plate 33a is increased. Movement is also restrained without rattling. Thereafter, the upper portion of the movable tooth plate 33a is pressed by the wedge member 85 to fix the movable tooth plate 33a.

  Thus, by providing the guide part 94 in the swing jaw 37 that also serves as the tooth plate frame, the guided part 95 of the movable tooth plate 33a cooperates in the process from the state of FIG. 13 to the state of FIG. When the movable tooth plate 33a is guided in the width direction and the guided portions 95a and 95b are both in contact with the guide surfaces 94a and 94b, the position in the width direction of the movable tooth plate 33a is determined to be a predetermined position. Further, the guided portions 95a and 95b are the guide surfaces 94a and 94b, so that the height position of the movable tooth plate 33a is also determined at a predetermined position, and the movement of the movable tooth plate 33a in the width direction is also restrained with certainty. Accordingly, if the movable tooth plate 33a is lowered at the position in the approximate width direction, the movable tooth plate 33a is positioned (centered) in the width direction and seated on the guide surfaces 94a and 94b. Even in a situation where it is difficult for an operator to confirm how the jaw 37 and the movable tooth plate 33a fit together, it is not necessary to carefully position the movable tooth plate 33a in the width direction, and the movable tooth plate 33a in the width direction. It is possible to restrain the movement and positioning in the vertical direction at the same time.

  Therefore, according to the present embodiment, it is possible to secure sufficient positional accuracy in the width direction and the vertical direction of the tooth plate, and to facilitate the work of attaching the tooth plate. Thereby, the tooth plate replacement time can be shortened and the labor of the replacement work can be reduced, the jaw crusher operation stop time can be shortened, and the work efficiency can be improved. Moreover, since the movement of the tooth plate in the width direction and the vertical direction can be firmly restrained, the displacement of the tooth plate with respect to the tooth plate frame during the crushing operation can also be suppressed.

  In the above, the crushing surfaces of the movable tooth plate 33a and the fixed tooth plate 32a are formed in a concave shape with the upper and lower portions slightly protruding toward the crushing chamber 38 as compared with the central portion in a side view (shown in FIG. 6). However, the present invention is not limited to this. For example, the present invention can be applied to the case where the upper and lower portions are formed in a convex shape that is retracted from the crushing chamber 38 as compared with the central portion in a side view, and the flat shape is formed from the upper portion to the lower portion in a side view. Applicable and produces similar effects.

30 Jaw crusher 31 Crusher frame 32 Fixed tooth 32a Fixed tooth plate (tooth plate)
33 Moving teeth 33a Movable tooth plate (tooth plate)
35 tooth plate frame 37 swing jaw (tooth plate frame)
38 Crushing chamber 87 Guide part 87a, b Guide surface 88 Sheet part 89 Restraint part 91 Guided part 91a, b Guided surface 94 Guide part (sheet part, restraint part)
94a, b Guide surface 95 Guided portion 95a, b Guided surface

Claims (4)

In a jaw crusher comprising a crushing device frame, a fixed tooth fixed to the crushing device frame, and a moving tooth that forms a crushing chamber between the fixed tooth and swings relative to the fixed tooth,
The fixed teeth and the moving teeth include a tooth plate that directly contacts the object to be crushed during the crushing operation, and a tooth plate frame to which the tooth plate is attached,
The tooth plate frame includes a guide portion that guides a position in a width direction of the tooth plate when the tooth plate is attached, a seat portion that supports the tooth plate, and a restraint portion that restrains the movement of the tooth plate in the width direction. Jaw crusher characterized by comprising.   The guide portion includes a guide surface that contacts a tapered or rounded guided surface provided on the tooth plate side and has a shape corresponding to the guided surface, and is installed at a lower portion of the tooth plate frame. The jaw crusher according to claim 1, wherein the jaw crusher is provided.   The jaw crusher according to claim 2, wherein a surface of the tooth plate facing the tooth plate frame is formed point-symmetrically with respect to the center of the surface.   The jaw crusher according to claim 2 or 3, wherein the guide portion serves as the seat portion and the restraining portion.

Images