Impact crusher

Abstract

The invention relates to an impact crusher comprising a rotor having a plurality of rotor discs, in which each rotor disc has a plurality of edge notches distributed over the outer circumference thereof, said edge notches being arranged in alignment with one another, the edge notches arranged in alignment with one another being designed for holding plate hammers, each edge notch comprises a first side wall, a second side wall and a bottom wall, a clamping cushion block with a clamping wall is arranged on the second side wall of each edge notch, the clamping cushion block can be fixed on the second side wall in a clamping position, and in the clamping position, the clamping wall of the clamping cushion block is arranged to clamp the plate hammer. The clamping pad is supported on the second side wall in such a way as to be movable from a clamping position to a maintenance position in which the clamping wall of the clamping pad is arranged to release the plate hammer.

Description

Technical Field

[0001] The present invention relates to a counter - impact crusher, which includes a rotor having a plurality of rotor disks, wherein each rotor disk has a plurality of edge notches distributed on its outer circumferential portion, and these edge notches are designed to extend radially inwards from the outer circumferential portion of the corresponding rotor disk, wherein the edge notches of the plurality of rotor disks are arranged to be aligned with each other, and the edge notches arranged to be aligned with each other are designed to hold the breaker plates, each edge notch includes a first side wall, a second side wall and a bottom wall, each edge notch has a holding member on its first side wall, wherein a clamping pad having a clamping wall is arranged on the second side wall of each edge notch, and wherein the clamping pad can be fixed on the second side wall in a clamping position, in which the clamping wall of the clamping pad is arranged to clamp the breaker plate between itself and the holding member. Background Art

[0002] A counter - impact crusher of the above type is known, for example, from DE19813310C1. This known counter - impact crusher includes a rotor composed of a plurality of rotor disks. The rotor disks are interrupted by edge notches which are formed on the outer circumferential portion of the rotor disks and extend radially inwards. The edge notches of all rotor disks are aligned with each other and form a holder for the breaker plates, wherein one side wall of the edge notch forms a support (Widerlager) for the breaker plate. A clamping pad is supported on the opposite side wall of each edge notch, and the clamping pad is inserted into the edge notch and is used to keep the inserted breaker plate against the side wall forming the support. In the direction of the bottom wall, each rotor disk has a ridge in the side wall region, and the ridge is provided with a hole, wherein the hole is aligned with the hole in the clamping pad. A threaded connecting member is inserted through the hole, and the clamping pad is fastened to the rotor disk by means of the threaded connecting member. In order to maintain the rotor or the counter - impact crusher, before removing the inserted breaker plate for repair or replacing the inserted breaker plate with a new one, the threaded connecting member must be loosened and removed, and the clamping pad must also be removed from the edge notch. Obviously, in order to maintain the breaker plate, a plurality of threaded connecting members must be loosened and removed from the rotor body, and the clamping pad must also be removed from the rotor body, which makes the maintenance time - consuming and costly, and at the same time, the weight of the components to be removed is also an additional source of danger.

[0003] The problem to be solved by the present invention is to provide a solution which provides a counter - impact crusher in a simple structure, wherein the breaker plate can be maintained simply, quickly, conveniently and safely. In the context of the present invention, "maintenance" is understood as removing the breaker plate from the rotor to repair the removed breaker plate and then reinstalling it, or replacing the breaker plate and fastening the new breaker plate on the rotor.

[0004] In a counter - impact crusher of the above type, according to the present invention, this problem is solved by supporting the clamping pad on the second side wall in such a way that it can be moved from the clamping position to the maintenance position, in which the clamping wall of the clamping pad is arranged to release the blow bar. Summary of the Invention

[0005] Advantageous and suitable embodiments and improvements of the present invention are derived from the dependent claims.

[0006] The present invention provides a counter - impact crusher, characterized in that each clamping pad can remain on the rotor disc during maintenance work and does not need to be disassembled, which advantageously benefits safety and saves costs and time during the maintenance work of the rotor and especially during the replacement of the blow bars. According to the present invention, the clamping pads are supported on the second side walls of the respective notches of each rotor disc such that the clamping pads can be deflected downward in the radial direction and then slide downward along the second side wall in a controlled manner, and then the lower clamping pad can pivot in the direction of the second side wall, thereby bringing the clamping pad into its maintenance position. In the maintenance position of the clamping pad, there is sufficient space in the edge notch so that the blow bar can be lifted upward from the edge notch while the clamping pad remains in the rotor body and especially on the rotor disc. After the blow bar is replaced or rotated, the clamping pad is pivoted back again, pushed upward in the radial direction and fixed in the clamping position. The present invention additionally provides a great ergonomic advantage because during maintenance work, the maintenance personnel no longer need to disassemble heavy clamping pads, but the clamping pads remain on the rotor disc, where the clamping pads are held and supported in a movable manner for maintenance purposes, so that the blow bar can be removed from the rotor body.

[0007] In a design of the present invention, it is particularly advantageous that the positioning device fixes the clamping pad in the clamping position on the second side wall, wherein the positioning device is designed to hold the clamping pad on the second side wall and guide the clamping pad to move relative to the second side wall during the movement from the clamping position to the maintenance position. According to the present invention, this is a mechanical and robustly designed positioning device.

[0008] In order to avoid damage to the rotor and a hazard source for maintenance personnel during maintenance work, the present invention provides in another design that the positioning device is designed to guide the clamping pad to move along the second side wall in the direction of the bottom wall during the movement of the clamping pad from the clamping position to the maintenance position.

[0009] In order to provide a sufficiently large free space for removing the blow bar, the present invention provides in another design that when the clamping pad moves from the clamping position to the maintenance position, the positioning device supports the clamping pad in such a way that the clamping pad can pivot in the direction of the second side wall.

[0010] In order to movably support the clamping pad at the edge notch of the rotor disk, another design solution of the present invention provides that the clamping pad is designed to have two side flanges which extend from the clamping wall and extend parallel to each other, wherein the second side wall is arranged between the two side flanges, and each of the two side flanges has an opening, and a stepped portion is formed at the edge of the opening, and the openings in the two side flanges are designed to be aligned with each other.

[0011] The opening and the stepped portion at the edge of the opening are used to receive the mechanical connecting member. wherein, in another design solution of the present invention, it is provided that the positioning device has a first threaded connecting member for this purpose, and the first threaded connecting member extends through the second side wall and the two side flanges. The clamping pad is connected to the rotor disk in this way.

[0012] In order to movably support the clamping pad, another design solution of the present invention provides that the openings in each of the two side flanges are designed as the type of slotted guide, and the first threaded connecting member is designed as the type of slider. The first threaded connecting member is loosened to move away from the clamping position, so that during the movement from the clamping position to the maintenance position, the clamping pad is connected to the second side wall and can move relative to the second side wall. Therefore, during the movement of the clamping pad from the clamping position to the maintenance position, the threaded connecting member fixedly arranged on the rotor disk guides the clamping pad, because the clamping pad is supported on the second side wall in a manner movable relative to the threaded connecting member through the opening of the slotted guide type.

[0013] In order to move the clamping pad in the direction of the bottom wall of the edge notch during maintenance work, another design solution of the present invention provides that the openings in the side flanges each form a linearly extending portion which has a predetermined width and extends from one end face of the clamping pad to the opposite end face of the clamping pad, wherein the first threaded connecting member has a guiding and locking nut, and the square cross section of the guiding and locking nut is designed to be adapted to the predetermined width of the opening. The square cross section of the nut has the advantage of accurately guiding the clamping pad here and making the work easier, because no tool for preventing loosening of the double nut is required to loosen and tighten the first threaded connecting member.

[0014] In an embodiment of the present invention, it is particularly advantageous that the first threaded connecting member in the loosened state during maintenance work forms a pivot axis, and the clamping pad is supported in such a way that it can pivot around the pivot axis when moving to the maintenance position.

[0015] In order to firmly and durably fasten the clamping pad in the clamping position, in one design embodiment of the present invention, it is provided that the positioning device includes a second threaded connection member extending through the second side wall and two side flanges, wherein a first through hole is formed axially through the second side wall and a second through hole is arranged at a radial distance from the first through hole. The first through hole receives the first threaded connection member, and when viewed in the radial direction, the first through hole is arranged between the bottom wall and the second through hole.

[0016] In order to firmly fasten the clamping pad in the clamping position, in one design embodiment of the present invention, it is provided that at the clamping position, the second through hole receives the second threaded connection member, and the first threaded connection member and the second threaded connection member each form a firmly tightened connection, so that the clamping pad is fixedly held on the second side wall. In particular, the fixedly held clamping pad firmly clamps the plate hammer between itself and the holding member at the clamping position.

[0017] Finally, in one design embodiment of the present invention, the second threaded connection member has a locking nut or a T-shaped nut, and the cross-section of the locking nut or the T-shaped nut is adapted to the predetermined width or the stepped portion of the opening. This cross-section of the nut has the following advantages: providing precise guidance for the clamping pad, making it easier to loosen and tighten the first threaded connection member by eliminating the need for tools for double-nut locking, and fixing the clamping pad in the clamping position in a more stable and firm manner.

[0018] It goes without saying that the above-mentioned features and the features to be explained below can be used not only in the combinations given respectively, but also in other combinations or individually, without departing from the scope of the present invention. The scope of the present invention is only defined by the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other details, features and advantages of the present invention will become apparent from the following description in conjunction with the drawings, in which preferred embodiments of the present invention are given by way of example. In the drawings:

[0020] Figure 1 A perspective view of a counterattack crusher according to the present invention is shown,

[0021] Figure 2 A side view of a counterattack crusher according to the present invention is shown,

[0022] Figure 3 A perspective detail view of a counterattack crusher according to the present invention is shown,

[0023] Figure 4 Another perspective detail view of a counterattack crusher according to the present invention is shown,

[0024] Figure 5Shows another three-dimensional detail view of the impact crusher according to the present invention,

[0025] Figure 6 shows a three-dimensional view of the edge notches and clamping pads of the rotor disc of the impact crusher according to the present invention,

[0026] Figure 7 shows a three-dimensional view of a part of the clamping pad and the positioning device,

[0027] Figure 8 shows another three-dimensional view of a part of the clamping pad and the positioning device,

[0028] Figure 9 shows a three-dimensional detail view of the clamping pad in the clamping position,

[0029] Figure 10 shows a three-dimensional detail view of the clamping pad when it moves from the clamping position to the maintenance position,

[0030] Figure 11 shows a three-dimensional detail view of the clamping pad when it moves towards the maintenance position, and

[0031] Figure 12 shows a three-dimensional detail view of the clamping pad in the maintenance position. Detailed implementation mode

[0032] Figures 1 to 3 shows different views of the rotor 1, which is part of the impact crusher. The rotor 1 includes a plurality of rotor discs 2, and there are a total of four rotor discs 2 in the shown embodiment. The rotor discs 2 are fastened to the rotor body 3 in a non-rotatable manner. Around the outer circumferential part of the rotor disc 2, the plate hammers 4 are fastened to the rotor disc 2 at uniform circumferential intervals, and each plate hammer 4 extends along the axial direction 5 relative to the rotor body 3 and extends beyond the rotor disc 2. In the shown embodiment, the rotor 1 has a total of four plate hammers 4. For the sake of clarity, Figure 2 only two plate hammers 4 are shown to make the edge notches 6 more clearly visible. The plate hammers 4 are inserted into the edge notches 6 in the rotor discs 2 and are fastened therein. Correspondingly, each rotor disc 2 includes a plurality of edge notches 6 distributed along its outer circumferential part 7, and these edge notches 6 are designed to extend radially inwards from the outer circumferential part 7 of each rotor disc 2. In total, referring to the shown embodiment, four edge notches 6 are formed in each rotor disc 2 for fastening the four plate hammers 4. The edge notches 6 of the plurality of rotor discs 2 are arranged to be aligned with each other, and the edge notches 6 arranged to be aligned with each other are designed for fixing the plate hammers 4. Each plate hammer 4 is supported on the holder 8, and the support is carried out at the rear side of the plate hammer 4, and this rear side faces away from the dominant rotation direction or the rotor turnover direction 9 of the rotor 1 during operation.

[0033] Figures 4 to 6 Shows a detailed view of a single edge notch 6 of a single rotor disk 2, where Figure 4 Shows a front view of the rotor disk 2, Figure 5 Shows a rear view of the same rotor disk 2, while Figure 6 Shows the components of the front view. As Figure 4 and Figure 5 shown, clamping pads 10 are provided for fastening the breaker plates 4, and the clamping pads are arranged within the edge notch 6. Wherein, when the clamping pads 10 are in the clamping position, the corresponding breaker plates 4 are arranged to be clamped between the clamping pads 10 and the retainer 8. Figures 1 to 5 Shows the clamping position of each clamping pad 10. As can be seen from the component diagram in Figure 6 , the edge notch 6 includes a first side wall 12, a second side wall 14 arranged opposite to the first side wall 12, and a bottom wall 15. The circumferential extension dimension of the edge notch 6 increases in the direction of the rotor body 3 in the radial direction 16, so that when observed in the circumferential direction, the edge notch 6 is larger in the region of the bottom wall 15 than on the outer circumferential part 7 of the rotor disk 2. The first side wall 12 of the edge notch 6 has a retainer 8, and the retainer 8 is fastened to the rotor disk 2 in the shown embodiment, or alternatively can be formed by the rotor disk 2 itself. Each breaker plate 4 has a groove extending in the axial direction 5 on the side facing the retainer 8, and a retaining cross bar 18 is inserted into the groove, and the retaining cross bar 1 is fastened in a recess within the retainer 8. The retaining cross bar 18 holds the breaker plate 4 to be clamped in place and prevents the breaker plate from moving in the radial direction 16 during operation.

[0034] Figure 4 and Figure 5 Show the clamping pads 10 in the clamping position, while Figures 6 to 8 Show various component diagrams, which will be discussed below. Each clamping pad 10 is supported on the respective second side wall 14 of each edge notch 6. In the clamping position, the clamping pad 10 is fixed to the second side wall 14, where, in the clamping position, the clamping wall 19 of the clamping pad 10 abuts against the breaker plate 4, so that the breaker plate 4 is fixed in such a way that it is clamped between the clamping wall 19 of the clamping pad 10 and the retainer 8. Therefore, in the clamping position, the clamping wall 19 of the clamping pad 10 is arranged to clamp the breaker plate 4 between the clamping wall and the retainer 8. According to the present invention, the clamping pads 10 are supported on the second side wall 14 in such a way that they can move from the clamping position to the maintenance position, where, in the maintenance position, the clamping wall 19 of the clamping pad 10 is arranged to release the breaker plate 4, for example as Figure 12As shown and will be described in more detail below. The clamping pad 10 is fixed in its clamping position by a positioning device 11. The positioning device 11 fixes the clamping pad 10 to the second side wall 14 in the clamping position (for example, see Figures 1 to 5 and Figure 9 ), wherein the positioning device 11 is designed to hold the clamping pad 10 on the second side wall 14 and guide the clamping pad 10 to move relative to the second side wall 14 during the movement from the clamping position to the maintenance position. The movement between the clamping position and the maintenance position is shown in Figure 10 and Figure 11 , while Figure 12 shows the maintenance position of the clamping pad 10. The positioning device 11 is also designed to guide the clamping pad 10 to move along the second side wall 14 in the direction of the bottom wall 15 when the clamping pad 10 moves from the clamping position to the maintenance position (for example, see Figure 10 and Figure 11 ). Finally, when the clamping pad 10 moves from the clamping position to the maintenance position, the positioning device 11 supports the clamping pad 10 in such a way that the clamping pad 10 can pivot in the direction of the second side wall 14.

[0035] Figures 6 to 8 shows further details of the structural design of the clamping pad 10. It can be seen that the clamping pad 10 is designed to have two side flanges 20 and 21. The two side flanges 20 and 21 extend from the clamping wall 19 and extend parallel to each other. The two side flanges 20 and 21 enclose the second side wall 14 here (also see, for example, Figure 4 and Figure 5 ), so that the second side wall 14 is arranged between the two side flanges 20 and 21. In addition, each of the two side flanges 20 and 21 has openings 22 and 23. The openings 22 and 23 each have linearly extending portions 24 and 25. The linearly extending portions 24 and 25 are aligned with each other here. The linearly extending portions 24 and 25 extend from the end face 38 of the clamping pad 10 to the opposite end face 39 of the clamping pad 10. In addition, steps 27 are respectively formed on the edges 26 of each of the openings 22 and 23.

[0036] When the clamping pad 10 moves from the clamping position to the maintenance position, the positioning device 11 is constructed by a first threaded connection 28. In addition, the positioning device 11 is constructed by the first threaded connection 28 and a second threaded connection 29 in the clamping position. In the clamping position and the maintenance position, the clamping pad 10 together with the openings 22 and 23 formed in the side flanges 20 and 21 all constitute a part of the positioning device 11. For example, it can be seen from Figures 6 to 8The first threaded connector 28 and the second threaded connector 29 are seen. Both the first threaded connector 28 and the second threaded connector 29 extend through the second side wall 14 and respectively pass through the two side flanges 20 and 21. Specifically, the first threaded connector 28 and the second threaded connector 29 extend through the openings 22 and 23 in the two side flanges 20 and 21. As Figure 6 shown, a first through hole 30 and a second through hole 31 are formed in the second side wall 14, and the first through hole 30 and the second through hole 31 are respectively used to receive the first threaded connector 28 and the second threaded connector 29. The first through hole 30 and the second through hole 31 extend through the second side wall 14 in the axial direction 5. From Figure 6 it can be seen that the second through hole 31 is arranged at a radial distance 32 from the first through hole 30. The radial distance 32 is less than the radial extension dimension 33 of the linear portions 24 and 25 of the two openings 22 and 23 in the two side flanges 20 and 21. Observed in the radial direction 16, the first through hole 30 is arranged between the bottom wall 15 and the second through hole 31.

[0037] According to the above description, during the movement from the clamping position to the maintenance position, the positioning device 11 only includes the first threaded connector 28, while in the clamping position, the positioning device 11 includes the first threaded connector 28 and the second threaded connector 29. The first threaded connector 28 extends through the first through hole 30, and the second threaded connector 29 extends through the second through hole 31. Therefore, the first threaded connector 28 and the second threaded connector 29 are fixedly arranged on the second side wall 14.

[0038] Figures 9 to 12 The respective steps of removing the breaker plate 4 are schematically shown. Figure 9 The clamping pad 10 is shown in its clamping position, where the clamping pad 10 clamps the breaker plate between itself and the holder 8. In the clamping position, the first threaded connector 28 and the second threaded connector 29 respectively form a firmly tightened connection, so that the clamping pad 10 is fixedly held on the second side wall 14. In the context of the present invention, a firmly tightened connection should be understood as a threaded connection, in which, for example, a predetermined torque is applied during tightening, so as to ensure that the clamping pad 10 is immovably fixed on the second side wall 14 in the clamping position through the first threaded connector and the second threaded connector that are both firmly tightened. In the clamping position (as Figure 4 and Figure 5As shown, the first threaded connector 29 and the second threaded connector 30 are supported on the stepped portion 27 of the openings 22 and 23 formed in and assigned to the side flanges 20, 21. More precisely, the corresponding bolt heads 34 and the corresponding nuts 35 and 36 are supported on the stepped portion 27. Among them, the nut 35 of the first threaded connector 28 is designed as a guiding and locking nut, and the square cross-section of the nut is adapted to the predetermined width 37 of the opening 22. The nut 36 of the second threaded connector 29 can also be constructed as a locking nut. In the illustrated embodiment, the nut 36 is constructed as a T-shaped slider, and the cross-section of the T-shaped slider is adapted to the predetermined width 37 of the opening 23 and the cross-section of the stepped portion 27 of the opening 23. The square cross-sections of the nuts 35 and 36 have the following advantages: The first threaded connector 28 and the second threaded connector 29 can be loosened or released (but can also be tightened) without a locking tool for double-nut locking, and the nuts 35, 36 are respectively supported on the stepped edge 26 or on the corresponding stepped portion 27. To maintain the corresponding breaker plate 4, the second threaded connector 29 is loosened and removed, while the first threaded connector 28 only remains in a loosened state. This is shown in Figure 10 wherein the second threaded connector 29 is removed and detached from the clamping pad 10 and the second side wall 14. In the context of the present invention, the loosened state should be understood as that the first threaded connector 28 is no longer tightened with a predetermined torque at this time. Therefore, the first threaded connector 28 is held on the second side wall 14, but does not fix the clamping pad 10 in the clamping position, but allows the clamping pad 10 to move relative to the first threaded connector 28 and thus relative to the second side wall 14.

[0039] Since the openings 22 and 23 in the two side flanges 20, 21 are designed as the type of slotted guides, and the first threaded connector 28 is designed as the type of slider, the clamping pad 10 can perform relative movement relative to the first threaded connector 28 and thus relative to the second side wall 14. Compared with Figure 10 , this relative movement can be seen in Figure 11 . Since the first threaded connector 28 is loosened in order to move out of the clamping position, during the movement from the clamping position to the maintenance position, the clamping pad 10 continues to be connected to the second side wall 14 and can move relative to the second side wall 14. The combination of the slotted guide and the slider enables the clamping pad 10 to move relative to the second side wall 14 in the direction of the bottom wall 15, wherein Figure 11shows the position of the clamping pad 10 when displaced in the direction towards the bottom wall 15, in which position, when observed with reference to the openings 22, 23, the first threaded connection 28 moves radially outwards in the respective linear portions 24, 25 of the openings 22, 23. When the first threaded connection 28 reaches the longitudinal end 40 of the linear portions 24, 25, this radial displacement of the clamping pad 10 in the direction towards the bottom wall 15 terminates, as Figure 11 shown. When the clamping pad 10 is moved from the clamping position to the maintenance position, the first threaded connection 28 in the released state also forms a pivot axis 41 (see, for example, Figure 12 ), and the clamping pad 10 is supported in such a way that it can pivot about this pivot axis when moving to the maintenance position. By means of this pivot axis 41, the clamping pad 10 can pivot from the Figure 11 shown position in the direction towards the second side wall 14, and pivot in the direction towards the second side wall 14 to reach the maintenance position, as Figure 12 shown, in which the clamping pad 10 is in the maintenance position. In the maintenance position, the clamping wall 19 of the clamping pad 10 is arranged to release the plate hammer 4, and the clamping pad 10 is held on the second side wall 14 so that the clamping pad 10 is held on the second side wall 14 for removing the plate hammer 4, and the clamping pad 10 does not have to be disassembled. To facilitate the removal of the plate hammer 4, in an embodiment not shown, the clamping pad 10 can be locked in the maintenance position by fixing the clamping pad 10 together with the first threaded connection 28 on the second side wall 14 in the maintenance position by means of an additional threaded connection.

[0040] Generally speaking, the present invention relates to a plate hammer locking mechanism in a rotor body, wherein the clamping pad 10 and the second side wall 14 of each rotor disk 2 are specially constructed. Each clamping pad 10 is designed such that its clamping wall 19 and side flanges 20, 21 correspond to the contour of the rotor disk 2, so that after the second threaded connection 29 is removed, the clamping pad 10 can be toggled downward, that is, radially inwardly moved in the direction towards the bottom wall 15 of the corresponding edge notch 6. According to a preferred embodiment, the clamping pad 10 slides towards the bottom wall 15 in a controlled manner through the linear portions 24, 25 of the first threaded connection 28 and the openings 22, 23, and then pivots towards the second side wall 14 of the rotor disk 2 at this lower end position, so that the clamping pad 10 is arranged in the maintenance position. This special kinematic characteristic of the clamping pad 10 provides sufficient space in the maintenance position, so that the plate hammer 4 can be lifted out of the edge notch 6 while the clamping pad 10 stays on the rotor disk 2. After the plate hammer 4 is replaced or rotated, the clamping pad 10 is pivoted back again, pushed upward, and re-fixed in the locked clamping position in a ready-to-run state through the first threaded connection 28 and the second threaded connection 29. Therefore, according to the present invention, the clamping pad 10 can stay on the rotor disk 2 for maintenance.

[0041] Of course, the above invention is not limited to the described and illustrated embodiments. It can be seen that, without departing from the scope of the present invention, various modifications that are easily conceivable by those skilled in the art can be made to the embodiments shown in the drawings according to the intended application. All the content included in the specification and / or shown in the drawings belongs to the present invention, including the content that is different from the specific exemplary embodiments and is easily conceivable by those skilled in the art.

[0042] List of Reference Signs

[0043] 1 Rotor

[0044] 2 Rotor Disk

[0045] 3 Rotor Body

[0046] 4 Plate Hammer

[0047] 5 Axial Direction

[0048] 6 Edge Notch

[0049] 7 Outer Peripheral Portion

[0050] 8 Holder

[0051] 9 Rotor Revolution Direction

[0052] 10 Clamping Pad

[0053] 11 Positioning Device

[0054] 12 First side wall

[0055] 14 Second side wall

[0056] 15 Bottom wall

[0057] 16 Radial direction

[0058] 17 Circumferential direction

[0059] 18 Retaining cross bar

[0060] 19 Clamping wall

[0061] 20 Side flange

[0062] 21 Side flange

[0063] 22 Opening of 20

[0064] 23 Opening of 21

[0065] 24 Straight portion

[0066] 25 Straight portion

[0067] 26 Edge

[0068] 27 Step portion

[0069] 28 First threaded connector

[0070] 29 Second threaded connector

[0071] 30 First through hole

[0072] 31 Second through hole

[0073] 32 Radial distance

[0074] 33 Radial extension dimension

[0075] 34 Bolt head

[0076] 35 Nut of 28

[0077] 36 Nut of 29

[0078] 37 Predetermined width of 22

[0079] 38 End face

[0080] 39 End face

[0081] 40 Longitudinal ends of 24 and 25

[0082] 41 Pivot axis.

Claims

1. An impact crusher, comprising a rotor (1), the rotor (1) having a plurality of rotor disks (2), each rotor disk (2) having a plurality of edge notches (6) distributed on an outer circumferential portion (7) of the rotor disk, the edge notches (6) being designed to extend radially inward from the outer circumferential portion (7) of the corresponding rotor disk (2), wherein the edge notches (6) of the plurality of rotor disks (2) are arranged to be aligned with each other, the edge notches (6) arranged to be aligned with each other are designed to hold a blow bar (4), each edge notch (6) having a first side A first side wall (12), a second side wall (14) and a bottom wall (15) are provided on each edge notch (6), each edge notch (6) having a retaining member (8) on the first side wall (12) of the edge notch, a clamping pad (10) including a clamping wall (19) is arranged on the second side wall (14) of each edge notch (6), and the clamping pad (10) can be fixed on the second side wall (14) in a clamping position, in which the clamping wall (19) of the clamping pad (10) is arranged to clamp the plate hammer (4) between the clamping wall (19) and the retaining member (8), It is characterized in that The clamping block (10) is supported on the second side wall (14) in a manner that it can be moved from the clamping position to a maintenance position, in which the clamping wall (19) of the clamping block (10) is arranged to release the plate hammer (4).

2. The impact crusher according to claim 1, characterized in that: In the clamping position, the positioning device (11) fixes the clamping pad (10) on the second side wall (14), wherein the positioning device (11) is designed to: keep the clamping pad (10) on the second side wall (14) during the process of moving from the clamping position to the maintenance position, and guide the clamping pad (10) to move relative to the second side wall (14).

3. The impact crusher according to claim 1 or 2, characterized in that: The positioning device (11) is designed to guide the clamping pad (10) to move along the second side wall (14) toward the bottom wall (15) during the process of the clamping pad (10) moving from the clamping position to the maintenance position.

4. The impact crusher according to any one of claims 1 to 3, characterized in that: When the clamping pad (10) moves from the clamping position to the maintenance position, the positioning device (11) supports the clamping pad (10) in a manner that enables the clamping pad (10) to pivot toward the second side wall (14).

5. The impact crusher according to any one of claims 2 to 4, characterized in that: The clamping pad (10) is designed to have two side flanges (20, 21), wherein the two side flanges extend from the clamping wall (19) and extend parallel to each other, the second side wall (14) is arranged between the two side flanges (20, 21), and the two side flanges (20, 21) each have an opening (22, 23), the edge (26) of the opening is formed with a step portion (27), and the openings (22, 23) in the two side flanges (20, 21) are designed to be aligned with each other.

6. The impact crusher according to claim 5, characterized in that: The positioning device (11) has a first threaded connection (28), which extends through the second side wall (14) and the two side flanges (20, 21).

7. The impact crusher according to claim 6, characterized in that: The openings (22, 23) of each of the two side flanges (20, 21) are designed as slotted guides, and the first threaded connection (28) is designed as a slider, wherein the first threaded connection (28) is loosened to move away from the clamping position, so that during the movement from the clamping position to the maintenance position, the clamping pad (10) is connected to the second side wall (14) and can move relative to the second side wall (14).

8. The impact crusher according to claim 6 or 7, characterized in that: The openings (22, 23) in the side flanges (20, 21) are designed to each have a linear extension portion (24, 25), which has a predetermined width (37) and extends from an end face (38) of the clamping pad (10) to an opposite end face (39) of the clamping pad (10), wherein the first threaded connection (28) has a guide and lock nut (35), the square cross-section of which is designed to adapt to the predetermined width (37) of the openings (22, 23).

9. The impact crusher according to any one of claims 6 to 8, characterized in that The first threaded connection (28) in the loosened state forms a pivot axis (41) about which the clamping block (10) is supported so as to be pivotable during movement of the clamping block (10) into the maintenance position.

10. The impact crusher according to any one of claims 6 to 9, characterized in that The positioning device (11) has a second threaded connection (29), which extends through the second side wall (14) and the two side flanges (20, 21), wherein a first through hole (30) and a second through hole (31) are formed through the second side wall (14) in an axial direction (5), the second through hole (31) being arranged to be spaced apart from the first through hole (30) by a radial distance (32), the first through hole (30) receiving the first threaded connection (28), and when viewed in a radial direction (16), the first through hole (30) being arranged between the bottom wall (15) and the second through hole (31).

11. The impact crusher according to claim 10, characterized in that: In the clamping position, the second through hole (31) receives the second threaded connector (29), and the first threaded connector (28) and the second threaded connector (29) each form a firmly tightened connection, so that the clamping pad (10) is fixedly held on the second side wall (14).

12. The impact crusher according to claim 10 or 11, characterized in that: The second threaded connection member (29) has a locking nut or a T-shaped slider (36), and the cross section of the locking nut or the T-shaped slider (36) is designed to be compatible with the predetermined width (37) of the opening (23) or the step portion (27).

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