Hammer crushing structure for crusher

Abstract

The utility model provides a hammer crushing structure for a crusher, and relates to the field of crushers. The device comprises a main shaft, the main shaft is arranged on the inner side of a shell of the pulverizer in a penetrating mode, and a motor used for driving the main shaft to rotate is arranged on the shell; the hollow shaft is in a hollow tubular shape and is arranged on the outer side of the main shaft in a sleeving mode, and the hollow shaft and the main shaft are connected through an expansion sleeve; the hammer carrier plates are welded to the outer wall of the hollow shaft and arranged at intervals in the axial direction of the hollow shaft, a plurality of hammer pin shafts are arranged among the hammer carrier plates in a penetrating mode, and the hammer pin shafts are arranged at intervals in the circumferential direction of the hollow shaft; and the plurality of hammer sheets are welded on the hammer pin shaft. The utility model has the effects of improving the rigidity of the main shaft and prolonging the service life.

Description

Technical Field

[0001] The present application relates to the field of crushers, and in particular, to a hammer crushing structure for a crusher. Background Art

[0002] A crusher mainly includes a housing and a crushing structure. The crushing structure mainly includes a main shaft, a connecting sleeve, and a plurality of hammer pieces. The main shaft is rotatably connected inside the housing. A keyway is provided on the main shaft, and a key connection between the connecting sleeve and the main shaft is achieved through the keyway. The hammer pieces are welded to the connecting sleeve. In this way, when the motor drives the main shaft to rotate, the hammer pieces can rotate inside the housing, thereby realizing the hammering and crushing effect on the material.

[0003] Since the connecting sleeve and the main shaft are connected by a key connection, the setting of the keyway weakens the rigidity of the main shaft, resulting in a weakened overall rigidity of the crushing structure and easily reducing the service life of the crushing structure. Utility Model Content

[0004] In order to improve the problem that the rigidity of the main shaft is reduced by the key connection method and the overall service life is reduced, the present application provides a hammer crushing structure for a crusher.

[0005] The present application provides a hammer crushing structure for a crusher, adopting the following technical solutions:

[0006] A hammer crushing structure for a crusher includes: a main shaft, the main shaft penetrates inside the housing of the crusher, and a motor for driving the main shaft to rotate is provided on the housing; a hollow shaft, the hollow shaft is in a hollow tubular shape and sleeved outside the main shaft, and the hollow shaft is connected to the main shaft through a shrink fit sleeve; a hammer carrier plate, a plurality of the hammer carrier plates are welded on the outer wall of the hollow shaft and arranged at intervals along the axial direction of the hollow shaft, a plurality of hammer pins penetrate between the plurality of hammer carrier plates, and the plurality of hammer pins are arranged at intervals along the circumferential direction of the hollow shaft; hammer pieces, a plurality of the hammer pieces are welded on the hammer pins.

[0007] By adopting the above technical solutions, the hammer carrier plates are welded on the outer wall of the hollow shaft, the hammer pins penetrate through the hammer carrier plates, and the hammer pieces are welded on the hammer pins. The hollow shaft is connected to the main shaft through a shrink fit sleeve. In this way, the fixing of the hammer pieces can be completed without opening a keyway on the main shaft, effectively improving the rigidity of the main shaft while not affecting the driving effect of the motor on the main shaft and the installation of the hammer pieces. When the hammer pieces need to be replaced, only need to loosen the shrink fit sleeve, and the separation of the hollow shaft and the main shaft can be completed, thus simplifying the replacement steps and without replacing the main shaft, which also extends the service life of the main shaft.

[0008] Optionally, a shrink fit sleeve is provided at both ends of the hollow shaft, the shrink fit sleeve is sleeved on the outer wall of the main shaft, and the outer wall of the shrink fit sleeve expands radially along the main shaft and abuts against the hollow shaft.

[0009] By adopting the above technical solution, the assembly and disassembly of the hollow shaft outside the main shaft are realized by using the tensioning and relaxation of the expansion sleeve, which reduces the difficulty of disassembly and assembly and improves the replacement efficiency of the hollow shaft and the hammer pieces.

[0010] Optionally, the hammer carrier plate is annular, the hammer carrier plate is sleeved on the outer wall of the hollow shaft, the hammer pin shaft axially penetrates through a plurality of the hammer carrier plates along the main shaft, and the hammer carrier plate and the hammer pin shaft are welded to each other.

[0011] By adopting the above technical solution, the hammer carrier plates are first welded to the hollow shaft, and then the penetration and welding of the hammer pin shafts are completed. In this way, a plurality of hammer carrier plates and a plurality of hammer pin shafts can support each other, improving the overall rigidity. Then, the hammer pieces are welded to the hammer pin shafts, and the fabrication of the crushing structure can be completed. The mutually welded hammer carrier plates and hammer pin shafts serve as a base for connecting the hammer pieces, effectively preventing the hammer pieces from breaking during the process of hammering materials.

[0012] Optionally, a end plate is sleeved at both ends of the hollow shaft, the main shaft and the end plate are coaxially arranged, one end of the hammer pin shaft penetrates to the outside of one end plate, the other end of the hammer pin shaft penetrates to the outside of the other end plate, and a locking mechanism for preventing the hammer pin shaft from axially moving is provided on the end plate.

[0013] By adopting the above technical solution, the end plate plays a role in supporting the hammer pin shaft, ensuring that the hammer pin shaft can reliably rotate with the main shaft and the hollow shaft, and then driving the hammer pieces to rotate to form a hammering effect on the materials.

[0014] Optionally, the inner wall of the end plate is slidably connected to the hollow shaft, and there is a gap between the outer wall of the end plate and the housing.

[0015] By adopting the above technical solution, the direct sliding connection between the end plate and the hollow shaft can reduce the friction between the end plate and the hollow shaft, and the gap between the end plate and the housing ensures that the end plate will not interfere with the housing during rotation, thereby reducing the wear of the end plate and ensuring that the end plate can rotate reliably and provide a supporting effect on the hammer pin shaft.

[0016] Optionally, the locking mechanism includes a lock piece and a locking bolt. The lock piece is detachably arranged on the end face of the end plate through the locking bolt, and the lock piece is used for locking the end of the hammer pin shaft.

[0017] By adopting the above technical solution, after the lock piece is locked to the end face of the end plate by the locking bolt, the lock piece will form a locking effect on the end of the hammer pin shaft. In this way, when the two ends of the hammer pin shaft are respectively locked by a lock piece, the hammer pin shaft will be reliably fixed between a pair of end plates and will not move horizontally.

[0018] Optionally, a groove is provided at the end of the hammer pin shaft. The groove is connected end to end and is annular. An arc-shaped notch is provided at the end of the lock piece, and the notch is adaptively clamped in the groove.

[0019] By adopting the above technical solution, after the notch is clamped into the groove, there will be an interference effect between the lock piece and the hammer pin shaft in the axial direction, thereby playing a role in clamping the hammer pin shaft.

[0020] Optionally, a plurality of threaded holes are provided on the end plate. A waist-shaped hole is provided on each lock piece. The waist-shaped hole and the threaded hole are arranged correspondingly. The locking bolt passes through the waist-shaped hole and is adaptively screwed into the threaded hole.

[0021] By adopting the above technical solution, after the notch is clamped into the groove, the waist-shaped hole is in a state corresponding to the threaded hole. At this time, by screwing the locking bolt into the waist-shaped hole and the threaded hole, the locking effect on the lock piece can be realized, ensuring that the lock piece can form a clamping and limiting effect on the hammer pin shaft.

[0022] In summary, the present application has the following beneficial effects:

[0023] 1. An empty shaft is sleeved outside the main shaft and a shrink disc is used to fix the empty shaft. At the same time, a hammer frame plate is welded on the empty shaft, a hammer pin shaft is passed through the hammer frame plate, and a hammer piece is welded on the hammer pin shaft. In this way, the installation of the hammer piece can be realized without opening a keyway on the main shaft, improving the rigidity of the main shaft and extending the service life of the main shaft.

[0024] 2. The lock piece is fixed on the end plate by a locking bolt, and the lock piece is clamped at both ends of the hammer pin shaft, so that the hammer pin shaft cannot move axially under the locking action of the two lock pieces, improving the fixing effect of the hammer pin shaft and the hammer piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a reference diagram of the assembly state of the empty shaft and the main shaft;

[0026] Figure 2 is a reference diagram of the use state of the present application;

[0027] Figure 3 is a schematic three-dimensional Figure 1 ;

[0028] Figure 4 is a schematic three-dimensional Figure 2 ;

[0029] Figure 5 is an exploded state reference diagram of the locking mechanism;

[0030] Figure 6 is a reference diagram of the assembly state of the lock piece and the hammer pin shaft;

[0031] In the figure: 1. Main shaft; 2. Housing; 20. Motor; 3. Hollow shaft; 31. Expansion sleeve; 32. Hammer support plate; 33. Hammer pin shaft; 330. Groove; 34. Hammer piece; 35. End plate; 350. Threaded hole; 4. Locking mechanism; 41. Locking piece; 411. Notch; 412. Kidney-shaped hole; 42. Locking bolt. Specific embodiments

[0032] The following is a further detailed description of the present application in conjunction with the attached Figures 1-6 drawings.

[0033] Figure 1 Fig. is a reference diagram of the assembly state of the hollow shaft and the main shaft, Figure 2 and Fig. is a reference diagram of the usage state of the present application. Refer to Figure 1 and Figure 2 , a hammer piece crushing structure for a crusher, including a main shaft 1 and a hollow shaft 3. The hollow shaft 3 is in the shape of a hollow tube, and the main shaft 1 is arranged inside the hollow shaft 3. The outer diameter of the main shaft 1 is smaller than the inner diameter of the hollow shaft 3. In this way, after the main shaft 1 penetrates into the inside of the hollow shaft 3, an expansion sleeve 31 can be arranged between the main shaft 1 and the hollow shaft 3, that is, the inner wall of the expansion sleeve 31 fits with the outer wall of the main shaft 1, and the outer wall of the expansion sleeve 31 fits with the inner wall of the hollow shaft 3. When the expansion sleeve 31 is in a tightened state (that is, when the expansion sleeve 31 expands axially along the hollow shaft 3), the hollow shaft 3 and the main shaft 1 are tightly connected and cannot slip relative to each other, so that a whole can be formed between the main shaft 1 and the hollow shaft 3. When the expansion sleeve 31 is in a relaxed state (that is, when the expansion sleeve 31 contracts axially along the hollow shaft 3), relative slip can occur between the main shaft 1 and the hollow shaft 3, so that the rapid disassembly of the hollow shaft 3 can be realized. The main shaft 1 is arranged inside the housing 2 of the crusher, and a motor 20 is arranged outside the housing 2 of the crusher. The motor 20 is used to drive the main shaft 1 to rotate.

[0034] Figure 3 Fig. is a schematic three-dimensional Figure 1 drawing of the present application, Figure 4 and Fig. is a schematic three-dimensional Figure 2 drawing of the present application. Refer to Figure 3 and Figure 4 , a plurality of hammer support plates 32 are arranged on the outer wall of the hollow shaft 3. The hammer support plates 32 are annular, and a plurality of hammer support plates 32 are arranged at intervals along the axial direction of the main shaft 1, and the hammer support plates 32 are connected to the hollow shaft 3 by welding. A plurality of hammer pin shafts 33 are also arranged on the hammer support plates 32. Each hammer pin shaft 33 extends along the axial direction of the main shaft 1 and penetrates through all the hammer support plates 32. A plurality of hammer pin shafts 33 are arranged at intervals in a circumferential shape around the axis of the hollow shaft 3. The hammer pin shafts 33 penetrate through the end faces of the hammer support plates 32. In this way, under the support of a plurality of hammer pin shafts 33, a plurality of hammer support plates 32 can be more firmly fixed on the surface of the hollow shaft 3, thereby preventing them from falling off during use.

[0035] See Figure 2 and Figure 4 , a plurality of hammer blades 34 are welded on the outer wall of the hammer pin shaft 33. The plurality of hammer frame plates 32 divide the hammer pin shaft 33 into several regions, and one hammer blade 34 is provided in each region. In this way, the hammer blades 34 with the same quantity and arrangement mode are arranged between two adjacent hammer frame plates 32, making the arrangement of the plurality of hammer blades 34 more reasonable. When the motor 20 drives the main shaft 1 to rotate, the hollow shaft 3, the hammer frame plates 32, the hammer pin shaft 33 and the hammer blades 34 can rotate synchronously, thereby ensuring that the hammer blades 34 have a better hammering effect on the material, improving the crushing efficiency, and effectively preventing the hammer blades 34 from falling off during the hammering process. Further, the installation of the hammer blades 34 does not require keyways to be opened on the main shaft 1, thereby effectively improving the rigidity of the main shaft 1, avoiding the fracture of the main shaft 1 during rotation, and prolonging the service life of the main shaft 1.

[0036] See Figure 4 , a end plate 35 is provided at both ends of the hollow shaft 3. The end plate 35 is also annular and sleeved on the outer wall of the hollow shaft 3. In this way, the main shaft 1, the hollow shaft 3 and the end plate 35 are arranged coaxially. A plurality of hammer pin shafts 33 are arranged between the two end plates 35. Moreover, one end of the hammer pin shaft 33 passes through one end plate 35 and extends to the outside of this end plate 35, and the other end of the hammer pin shaft 33 passes through the other end plate 35 and extends to the outside of this end plate 35. The inner wall of the end plate 35 is slidably connected with the hollow shaft 3, and there is a gap between the outer wall of the end plate 35 and the housing 2. In this way, during the process of the main shaft 1 driving the hollow shaft 3 to rotate, the end plate 35 and the hollow shaft 3 remain relatively stationary and do not rub against each other, and the end plate 35 and the housing 2 are separated from each other without rubbing, thereby effectively reducing the wear of the end plate 35 and ensuring that the end plate 35 can maintain a reliable supporting effect on the hammer pin shaft 33.

[0037] Figure 5 is an exploded state reference diagram of the locking mechanism. See Figure 5 , a plurality of locking mechanisms 4 are provided on the end plate 35. The locking mechanisms 4 are installed at the ends of the hammer pin shafts 33 and are used to lock the hammer pin shafts 33, preventing the hammer pin shafts 33 from moving horizontally during the process of hammering and crushing the material, causing the hammer blades 34 to be misaligned or even fall off, and further making the overall structure more firm.

[0038] Figure 6 is an assembly state reference diagram of the lock piece and the hammer pin shaft. See Figure 6 and in combination with Figure 4 and Figure 5, the locking mechanism 4 includes a lock piece 41 and a locking bolt 42. Each lock piece 41 is provided with an oblong hole 412, and a number of threaded holes 350 are provided on the end plate 35. The threaded holes 350 and the oblong holes 412 are arranged in one-to-one correspondence. When the locking bolt 42 is screwed into the oblong hole 412 and the threaded hole 350, the fixation and locking of the lock piece 41 on the end plate 35 can be achieved. An arc-shaped notch 411 is provided at the end of the lock piece 41. At the same time, a groove 330 is provided at both ends of the hammer pin shaft 33. The groove 330 is connected end to end and is annular. Both grooves 330 are located outside the end plate 35. When the notch 411 of the lock piece 41 is inserted into the groove 330, the lock piece 41 will form a locking effect on the hammer pin shaft 33. Specifically, after the lock piece 41 is snapped into the groove 330, the threaded hole 350 and the oblong hole 412 are in an aligned state. At this time, after the locking bolt 42 is screwed into the oblong hole 412 and the threaded hole 350, the lock piece 41 will be fixed on the end plate 35. Since the notch 411 and the groove 330 are in a mutually adapted state, mutual interference will occur between the hammer pin shaft 33 and the lock piece 41, effectively preventing the hammer pin shaft 33 from moving axially during the process of material hammering and crushing. In this way, the stability of the material hammering and crushing process can be effectively improved, thereby improving the crushing effect, and also preventing the hammer piece 34 from being damaged due to the axial movement of the hammer pin shaft 33.

[0039] In this application, the hollow shaft 3 is sleeved outside the main shaft 1 and connected to the main shaft 1 through a shrink fit sleeve 31. In this way, on the one hand, it is convenient to disassemble and assemble the hollow shaft 3, which can be achieved only by adjusting the expansion degree of the shrink fit sleeve 31. On the other hand, there is no need to provide a keyway for connection on the surface of the main shaft 1, which improves the overall structural rigidity of the main shaft 1, thereby prolonging the service life of the main shaft 1.

[0040] A hammer support plate 32 is welded on the hollow shaft 3. A number of hammer pin shafts 33 are inserted through the hammer support plate 32. A number of hammer pieces 34 are welded on the hammer pin shafts 33. In this way, a whole is formed among the hollow shaft 3, the hammer support plate 32, the hammer pin shafts 33 and the hammer pieces 34. This whole can be quickly disassembled. That is, after the shrink fit sleeve 31 is loosened, the hollow shaft 3 can be easily removed from the main shaft 1. During the removal process of the hollow shaft 3, the removal of the hammer pieces 34 is also completed, facilitating the disassembly, maintenance or replacement of the hammer pieces 34.

[0041] During the disassembly and assembly of the hammer pieces 34, it can be achieved only by adjusting the expansion state of the shrink fit sleeve 31. There is no need to provide a keyway on the surface of the main shaft 1, further improving the rigidity of the main shaft 1 and prolonging the service life of the main shaft 1.

[0042] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. A hammer crushing structure for a crusher, characterized in that: include: A main shaft (1), the main shaft (1) being inserted into the inner side of a housing (2) of the pulverizer, and the housing (2) being provided with a motor (20) for driving the main shaft (1) to rotate; A hollow shaft (3), the hollow shaft (3) is in a hollow tubular shape and is sleeved on the outside of the main shaft (1), and the hollow shaft (3) and the main shaft (1) are connected via a tightening sleeve (31); A hammer frame plate (32), wherein a plurality of the hammer frame plates (32) are welded on the outer wall of the hollow shaft (3) and are arranged at intervals along the axial direction of the hollow shaft (3); a plurality of hammer pins (33) are inserted between the plurality of hammer frame plates (32), and the plurality of hammer pins (33) are arranged at intervals along the circumferential direction of the hollow shaft (3); Hammer pieces (34), a plurality of hammer pieces (34) are welded on the hammer pin shaft (33).

2. A hammer crushing structure for a crusher according to claim 1, characterized in that: A tightening sleeve (31) is provided at both ends of the hollow shaft (3). The tightening sleeve (31) is sleeved on the outer wall of the main shaft (1). The outer wall of the tightening sleeve (31) expands along the radial direction of the main shaft (1) and presses against the hollow shaft (3).

3. The hammer crushing structure for a crusher according to claim 1, characterized in that: The hammer frame plate (32) is annular and sleeved on the outer wall of the hollow shaft (3). The hammer pin shaft (33) penetrates a plurality of the hammer frame plates (32) along the axial direction of the main shaft (1). The hammer frame plates (32) and the hammer pin shafts (33) are welded to each other.

4. A hammer crushing structure for a crusher according to claim 3, characterized in that: An end plate (35) is sleeved on both ends of the hollow shaft (3), the main shaft (1) and the end plate (35) are coaxially arranged, one end of the hammer pin shaft (33) passes through the outside of one end plate (35), and the other end of the hammer pin shaft (33) passes through the outside of the other end plate (35), and a locking mechanism (4) for preventing the hammer pin shaft (33) from moving in the axial direction is provided on the end plate (35).

5. A hammer crushing structure for a crusher according to claim 4, characterized in that: The inner wall of the end plate (35) is slidably connected to the hollow shaft (3), and a gap exists between the outer wall of the end plate (35) and the housing (2).

6. A hammer pulverizing structure for a pulverizer according to claim 4, characterized in that: The locking mechanism (4) comprises a locking plate (41) and a locking bolt (42). The locking plate (41) is detachably arranged on the end surface of the end plate (35) via the locking bolt (42). The locking plate (41) is used to lock the end of the hammer pin shaft (33).

7. A hammer pulverizing structure for a pulverizer according to claim 6, characterized in that: The end of the hammer pin shaft (33) is provided with a groove (330), the groove (330) is connected end to end and is annular, and the end of the locking plate (41) is provided with an arc-shaped notch (411), and the notch (411) is adaptively locked in the groove (330).

8. The hammer pulverizing structure for a pulverizer according to claim 7, characterized in that: The end plate (35) is provided with a plurality of threaded holes (350), and each of the locking plates (41) is provided with a waist hole (412). The waist holes (412) and the threaded holes (350) are arranged correspondingly, and the locking bolts (42) are fittedly screwed into the threaded holes (350) after passing through the waist holes (412).

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