[0036] figure 1 The rotor 10 of an impact crusher is shown, which is used for crushing limestone, marl, clay, crushed stone or similar mineral materials. The rotor 10 includes a crushing roller body 12 having a substantially cylindrical shape, and the crushing roller body 12 has a central axial hole 14 to receive a shaft (not shown) for driving the crushing roller body. During the operation of the impact crusher, the rotor 10 rotates in the direction of the arrow, wherein the striking plate 18 is, for example, the other rotor rotating in the opposite direction ( figure 1 (Not shown in) or the striking plate 18 interacts with an impact element (not shown) arranged on the side of the rotor 10.
[0037] The crushing roller body 12 has six recesses 16 extending in the axial direction on its outer circumference, and wherein each of the six recesses 16 is provided with a striking plate 18 and a holding device 20. The substantially plate-shaped striking plate 18 extends over the entire length of the crushing roller body 12 in the axial direction, so the striking plates 18 each terminate at the side of the crushing roller body 12. In the radial direction, the striking plates 18 each extend beyond the outer circumference of the crushing roller body 12 by about one-third of their height and into the crushing roller body 12 by about two-thirds of their height. The striking plates 18 are evenly spaced on the circumference of the crushing roller body 12. Each striking plate 18 rests on the holding device 20 by means of the side facing the direction of rotation and rests on the crushing roller body 12 by means of the opposite side. In addition, a fastening device 22 is installed on the crushing roller body 12 to prevent the striking plate 18 from moving in the axial direction. Preferably, the fastening device 22 is a plate installed on the side of the crushing roller body 12, for example, the fastening device 22 is screwed to the crushing roller body and interacts with the striking plate, thereby ensuring that the striking plate 18 is fixed in the axial direction. . The holding device 20 extends in the radial direction along the side of the corresponding striking plate 18 extending inside the crushing roller body 12, and the holding device is flush with the circumference of the crushing roller body 12. In the axial direction, the holding device 20 extends axially in the recess 16 over the entire length of the crushing roller body 12. The holding device 20 is detachably mounted, for example, screwed to the crushing roller body 12, so that the holding device can be replaced when needed.
[0038] figure 2 show figure 1 A detailed illustration of the holding device 20 in which, for the sake of simplicity, a partial cross-section of the striking plate 18 is shown. The holding device 20 has a guide frame 24 which has a substantially box-like shape and has a plurality of guide surfaces. Reference image 3 The design of the guide frame 24 is described in detail. Two guide elements 26 and two clamping elements 28 are also arranged in the guide frame 24, among which, figure 2 Only one guide element 26 and one clamping element 28 are shown in the figure. Each guide element 26 and clamping element 28 can follow image 3 The guide surfaces 44, 46, 48, 50 shown move. The holding device also includes a driving device 36 having a first threaded spindle 30 and a second threaded spindle 32. The threaded spindles 30, 32 extend through the guide frame 24 parallel to each other in the longitudinal direction of the guide frame 24. Two guide elements 26 are arranged on the first threaded spindle 30, which is arranged above the second threaded spindle 32, in particular on the radially outer side of the second threaded spindle 32, wherein the second threaded spindle 32 Two clamping elements 28 are arranged on it. The threaded spindles 30, 32 are each mounted in a slot 42 extending through the guide frame 24 by means of fastening elements 38, 40—especially nuts—to prevent axial movement of the threaded spindles 30, 32 and allow Radial movement of threaded spindles 30, 32. The threaded spindles 30, 32 each have a thread, and in particular have two types of threads, right-handed and left-handed threads, wherein these threads each extend to the center of the threaded spindle, so that one of the ends of the threaded spindles 30, 32 The other end of the ends of the threaded spindles 30, 32 has a left-hand thread. The guide element 26 is arranged at the corresponding opposite ends of the threaded spindle 30 and is at the same distance from the corresponding end of the threaded spindle, so that when the threaded spindle 30 rotates, the guide element 26 is in the opposite direction on the threaded spindle 30 mobile. The clamping element 28 is mounted on the second threaded spindle 32 in the same manner, so that the clamping element 28 also moves in the opposite direction.
[0039] image 3 The illustrated guide frame 24 has a rear wall 52 that rests on the crushing roller body 12 in a state where the guide frame 24 is installed in the crushing roller body 12. Four guide surfaces 44, 46, 48, 50 are formed in the guide frame 24, and the guide element 26 and the clamping element 28 are guided along the surfaces. The guide surface 48 and the guide surface 50 each serve to guide the clamping element 26 and are arranged in a V-shaped manner relative to each other and at a right angle to the rear wall 52. The guide surface 48 and the guide surface 50 have a flat design and each form from the center of the longitudinal side surface of the guide frame 24 in an axial direction of about 5° to 30° with respect to the side of the rotor 10 facing the guide frame 24, particularly 10°. It extends at an angle of inclination of ° to 20°, preferably 10.5°. The guide surface 44 and the guide surface 46 are each used to guide the guide element 26 and are arranged in a substantially V-shaped manner with respect to each other, wherein the guide surface 44 and the guide surface 46 are approximately 10° with respect to the rear wall 52 of the guide frame. It is arranged at an angle of up to 30°, in particular 12° to 20°, preferably 14°. The angle of inclination of the guide surface 44 and the guide surface 46 with respect to the axial direction is about 5° to 30°, particularly 10° to 20°, preferably 10.5°, and the angle of inclination is greater than that of the guide surface 48 and the guide surface 50 The inclination corresponds to the inclination, in which the guide surface 44 and the guide surface 46 for guiding the corresponding guide element 26 are arranged above the guide surface 48 and the guide surface 50, especially on the guide surface 48 and the guide surface 50 Radial outside.
[0040] The guide frame 24 also has a slot 42 elongated in the radial direction. The slot 42 extends in the longitudinal direction of the guide frame 24. In particular, the slot 42 extends through the crushing roller body 12 in the axial direction. Through the guide frame 24, and in which, figure 2 The first threaded spindle 30 and the second threaded spindle 32 shown in the figure extend through the slot 42. The slot 42 also extends through the guide surface 48 and the guide surface 50.
[0041] Figure 4 The guide element 26 shown in is in the form of a generally wedge-shaped, wherein the upward radially outwardly facing surface forms about 5° to 30° with respect to the longitudinal axis of the guide element 26, particularly with respect to the axial direction of the rotor 10. The ground is an angle of 10° to 20°, preferably 10.5°. The side of the guide element 26 facing the direction of the holding device 20 has a side surface extending substantially in the radial direction and a contact surface 62 that rests against image 3 The guide surface 44 is designed to match the angular orientation of the guide surface 44. The contact surface 26 forms an angle of about 10° to 30°, particularly 12° to 20°, preferably 14° with respect to the side surface and the radial direction of the rotor 20. The surface of the guide element 26 facing the striking plate 18 has a trapezoidal protrusion 64 that extends along the radially inward lower edge of the guide element 26. The trapezoidal protrusion 64 is used to connect the guiding element 26 to the striking plate 18 in a form-fitting connection. The threaded hole 54 for receiving the first threaded spindle 30 extends through the guide element 26 in the longitudinal direction. The guide element 26 resting on the guide surface 46 is opposite to Figure 4 The illustrated guide element 26 has a symmetrical configuration.
[0042] Figure 5 The clamping element 28 shown in has a generally wedge-shaped design, wherein the downwardly facing radially inward surface forms a contact surface 56 which rests on the guide surface 48 of the guide frame 24 and is designed to match the guide surface 48 angle orientation. The contact surface 56 is substantially flat and has an angle of about 5° to 30°, particularly 10° to 20°, preferably 10.5° with respect to the axial direction. A threaded hole 58 for receiving the second threaded spindle 32 extends through the clamping element 28 in the longitudinal direction. When installed in the guide frame 24, the upper radially outwardly facing surface of the clamping element 28 rests on the lower radially inwardly facing surface of the guide element 26. The clamping element resting on the guide surface 50 is relative to Figure 4 The clamping element 28 shown has a symmetrical configuration.
[0043] Image 6 It is shown that the striking plate 18 has a trapezoidal groove 34 in the side facing the holding device in the installed state. The groove 34 extends in the longitudinal direction of the strike plate 18 along the lower edge that faces radially inward and is used to connect the strike plate 18 to the guide element 26. in figure 2 In the installed state shown, the trapezoidal groove 34 of the strike plate 18 interacts with the trapezoidal protrusion 34 of the guide element 26 to allow the guide element 26 to move relative to the strike plate 18 along the groove 34. The striking plate 18 also has an impact surface 60 which is arranged on the radially outward end region of the side surface and has, for example, a wear-resistant coating (not shown here).
[0044] Figure 7 A section of the drive device 36 is shown, of which only one threaded spindle 30 is shown as an example. The threaded spindle 30 has a first section 66 and a second section 68, and the first section 66 and the second section 68 have different threads. For example, the first section 66 has a right-hand thread and the second section 68 has a left-hand thread. Arranged between the first section 66 and the second section 68 is a spring element 70 which has a sleeve in which a spring, such as a helical compression spring or a plurality of diaphragm springs, is arranged. The sleeve is connected to the first section 66 and the second section 68 of the threaded spindle. In this way, the axial movement of the sections 66, 68 is possible, but the twisting of the sections 66, 68 relative to each other is possible. prevent. Preferably, the ends of the sections 66, 68 facing the center of the threaded spindle 30 have an outer hexagon that interacts with the inner hexagon formed in the sleeve and thus prevents the sections 66, 68 from being relative to The torsion of each other and allows movement of the segments relative to each other in the axial direction. For example, the spring element ensures the preload between the section 66 and the section 68 and thus prevents incorrect tightening of the threaded spindle.
[0045] In order to move the striking plate in the radial direction, the first threaded spindle 30 rotates, thereby causing the guide element 26 to move outward along the threaded spindle 30 in the axial direction. The different threads of the threaded spindle ensure that the guide elements 26 move in opposite directions to each other. The striking plate 18 and the guiding element 26 are connected by means of a form-fitting connection which includes the trapezoidal protrusion on the guiding element 26 in the trapezoidal groove 34 of the striking plate-enabling the guiding element 26 to follow the groove 34 It slides in the axial direction, so that the striking plate 18 does not move in the axial direction as the guide element 26 moves in the radial direction. For the radial movement of the striking plate 18, the second threaded spindle 32 rotates, thus causing the clamping elements 28 to slide under the guide element 26 and to move the guide element 26 against the guide surfaces 44, 46, 48, 50. The clamping element element in each case moves the guide element in the radial direction into a blocking position in which the guide element rests on the guide surfaces 44, 46 and prevents movement in the radial direction outwards . In the blocking position, the clamping elements are each arranged radially inwardly relative to the guide element, so that the inward movement of the guide element 26 in the radial direction is prevented. The threaded spindles 30, 32 are driven, for example, by manual drive or by means of an external drive device such as a hydraulic motor or an electric motor.
[0046] The described arrangement provides a simple and reliable adjustment of the paddle in the radial direction, and therefore, the entire paddle 18 needs to be replaced only when very severe wear occurs, and the height of the paddle 18 can be adapted at any time The nature of the corresponding material to be crushed. In particular, this arrangement allows the strike plate to move continuously and steplessly in the radial direction, whereby precise positioning of the strike plate is possible. This allows considerable time savings in the event of wear of the striking plate and prevents long downtime of the impact crusher.
[0047] Attached text list
[0048] 10 rotor
[0049] 12 Crushing roller
[0050] 14 holes
[0051] 16 recess
[0052] 18 Percussion Pad
[0053] 20 holding device
[0054] 22 Fastening device
[0055] 24 Guide frame
[0056] 26 Guide element
[0057] 28 Clamping element
[0058] 30 First thread spindle
[0059] 32 Second threaded spindle
[0060] 34 Trapezoidal groove
[0061] 36 Drive
[0062] 38 Fastening device
[0063] 40 Fastening device
[0064] 42 recess
[0065] 44 Guide surface
[0066] 46 Guide surface
[0067] 48 Guide surface
[0068] 50 guide surface
[0069] 52 Back Wall
[0070] 54 threaded hole
[0071] 56 Guide surface
[0072] 58 threaded hole
[0073] 60 Impact surface
[0074] 62 Contact surface
[0075] 64 Trapezoidal protrusion
[0076] 66 First section of threaded spindle
[0077] 68 First section of threaded spindle
[0078] 70 spring element
