Crusher impact plate gap adjusting device and crusher

Abstract

The invention relates to the technical field of crushers, and particularly discloses a crusher impact plate gap adjusting device and a crusher. The gap adjusting device for the impact plate of the crusher comprises a fixing assembly, a sleeve, an elastic piece, a lock pin, an adjusting rod and an adjusting nut. The fixing assembly is mounted outside a box body of the crusher and comprises a mounting cavity and a lock hole; one end of the sleeve is slidably arranged in the mounting cavity; the elastic piece sleeves the sleeve, one end of the elastic piece abuts against the annular flange on the sleeve, and the other end of the elastic piece abuts against the top wall of the mounting cavity; the lock pin is used for extending into the mounting cavity through the lock hole to be clamped with the annular flange; the adjusting rod penetrates through the sleeve, one end of the adjusting rod penetrates through a first through hole in the bottom wall of the mounting cavity and is hinged to the box body and the impact plate, and the other end of the adjusting rod is provided with a first external thread; the adjusting nut is arranged at the other end of the sleeve and can rotate around the axis of the adjusting nut, and the other end of the adjusting rod is connected with the adjusting nut. The gap adjusting device for the impact plate of the crusher can protect the impact plate, and the gap adjustment is safe and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of crushers, and in particular to a gap adjustment device for a crusher counterattack plate and a crusher. Background Art

[0002] A counterattack hammer crusher mainly consists of components such as a rotor, a counterattack plate, and a gap adjustment device. The gap adjustment device is responsible for adjusting the gap between the counterattack plate and the moving envelope surface of the rotor, and thereby controlling the discharge particle size of the material. General gap adjustment devices include an adjusting rod. One end of the adjusting rod is connected to the counterattack plate, and the other end passes through the crusher housing and is connected to a nut. By turning the nut, the adjusting rod is pushed in or pulled out; or the other end of the adjusting rod is connected to a hydraulic system, and the adjusting rod is pushed in or pulled out through the hydraulic system, so as to realize the adjustment of the position of the counterattack plate. However, both of these two gap adjustment devices are rigidly connected to the counterattack plate. When a large piece of material or metal enters the crusher, the counterattack plate may be strongly impacted, resulting in structural deformation or damage.

[0003] Although there are some gap adjustment devices with a buffering effect on the market, the overall structure is relatively complex, resulting in a relatively large overall size of the gap adjustment device. Moreover, if the counterattack plate is blocked by slime in the crusher housing when the gap needs to be adjusted, even if the adjusting rod is pushed to move, this part of the adjustment distance will be absorbed by the buffering structure, resulting in the fact that the counterattack plate does not actually move, affecting the gap adjustment. And when the blockage disappears under working conditions such as vibration, the counterattack plate will instantaneously pop out and impact the material or the rotor, resulting in damage to components such as the counterattack plate and the rotor.

[0004] Therefore, it is urgent to propose a gap adjustment device for a crusher counterattack plate and a crusher to solve the above technical problems. Summary of the Invention

[0005] According to one aspect of the present invention, the present invention provides a gap adjustment device for a crusher counterattack plate, which can realize the avoidance of the counterattack plate for large pieces of material or metal sundries. At the same time, the gap adjustment is safe and reliable, effectively protecting the counterattack plate and the rotor.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A gap adjustment device for a crusher counterattack plate, comprising:

[0008] A fixing component, installed outside the crusher housing, including an installation cavity and a locking hole communicating with the installation cavity. A first through hole is provided on the bottom wall of the installation cavity;

[0009] A sleeve, one end of which is slidably arranged in the installation cavity, and an annular flange is provided on the sleeve;

[0010] An elastic member is sleeved outside the sleeve. One end of the elastic member abuts against the annular flange, and the other end abuts against the top wall of the installation cavity;

[0011] A locking pin is used to extend into the installation cavity through the locking hole and engage with the annular flange to limit the sliding of the sleeve;

[0012] An adjusting rod is disposed through the sleeve. One end of the adjusting rod passes through the first through hole and the box body and is hinged to the counterattack plate. The other end of the adjusting rod is provided with a first external thread;

[0013] An adjusting nut is arranged at the other end of the sleeve and can rotate around its own axis. The other end of the adjusting rod is connected to the adjusting nut through the first external thread. When the adjusting rod is pushed, the sleeve is driven to slide through the adjusting nut.

[0014] Optionally, a first driving member is provided on the fixing assembly. The output end of the first driving member is connected to the locking pin and is used to drive the locking pin to slide in the locking hole so that the locking pin extends into the installation cavity and engages with the annular flange, or the locking pin leaves the installation cavity and separates from the annular flange;

[0015] And / or, a clamping groove is provided on the annular flange, and the locking pin can be inserted into the clamping groove.

[0016] Optionally, the fixing assembly includes:

[0017] An installation cylinder is installed outside the box body. The installation cylinder includes a first cylindrical structure extending along the axial direction. An opening is provided at the top end of the first cylindrical structure. The bottom end of the first cylindrical structure is closed by a bottom plate. The first through hole is provided on the bottom plate. A connecting edge is provided on the outer peripheral wall of the first cylindrical structure, and a first connecting hole is provided on the connecting edge;

[0018] A pressure plate is disposed above the installation cylinder in a position-adjustable manner and encloses the installation cavity with the installation cylinder. A central hole is provided in the middle of the pressure plate. One end of the sleeve slides through the central hole and extends into the first cylindrical structure. The other end of the elastic member abuts against the pressure plate. A second connecting hole is also provided on the pressure plate;

[0019] An adjusting screw rod is disposed through the first connecting hole and the second connecting hole;

[0020] A locking nut. The head of the adjusting screw rod abuts against the pressure plate, and the tail of the adjusting screw rod passes through the first connecting hole and is connected to the locking nut.

[0021] Optionally, the fixing assembly includes:

[0022] The installation cylinder is installed outside the box body. The installation cylinder includes a first cylindrical structure extending along the axial direction. The top end of the first cylindrical structure is provided with an opening, the bottom end of the first cylindrical structure is closed by a bottom plate, a first through hole is provided on the bottom plate, and a second external thread is provided on the outer peripheral wall of the first cylindrical structure;

[0023] The floating cylinder includes a second cylindrical structure extending along the axial direction. The top end of the second cylindrical structure is closed by a top plate, the bottom end of the second cylindrical structure is provided with an opening, an internal thread is provided on the inner peripheral wall of the second cylindrical structure. The floating cylinder is connected to the part of the installation cylinder provided with the second external thread through the internal thread, and encloses the installation cavity with the installation cylinder. The other end of the elastic member abuts against the top plate of the floating cylinder. A second through hole is provided on the top plate of the floating cylinder, and one end of the sleeve slides through the second through hole and extends into the first cylindrical structure;

[0024] The driven gear is sleeved outside the floating cylinder and rotates synchronously with the floating cylinder;

[0025] The driving gear meshes with the driven gear;

[0026] The second driving member is arranged on the installation cylinder. The output end of the second driving member is connected to the driving gear and is used to drive the driving gear to rotate. The driving gear drives the driven gear to rotate to make the top plate of the floating cylinder approach or move away from the installation cylinder.

[0027] Optionally, a guiding hole corresponding to the annular flange is provided on the bottom wall of the installation cavity. The guiding rod slides through the guiding hole. One end of the guiding rod extending into the installation cavity is connected to the annular flange. A limiting head is provided at the end of the guiding rod outside the installation cavity, and the limiting head can abut against the bottom wall of the installation cavity.

[0028] Optionally, the other end of the sleeve is fixedly connected to the connecting cylinder. A first bearing is installed in the connecting cylinder. Part of the adjusting nut is in interference fit with the inner ring of the first bearing, and the other part of the adjusting nut extends out of the connecting cylinder;

[0029] Alternatively, a second bearing is installed at the opening of the other end of the sleeve. Part of the adjusting nut is in interference fit with the inner ring of the second bearing, and the other part of the adjusting nut extends out of the sleeve.

[0030] Optionally, the crusher counterattack plate gap adjusting device further includes a third driving member. The output end of the third driving member is provided with a connecting head, a connecting groove is provided on the connecting head, and the connecting cylinder is connected to the adjusting nut through the connecting groove. The third driving member drives the connecting head to rotate to drive the adjusting nut to rotate.

[0031] Optionally, one end of the adjusting rod is provided with a hinge fork head, and the hinge fork head is hinged to the counterattack plate;

[0032] And / or, the crusher counterattack plate gap adjusting device further includes a mounting support, the mounting support is installed outside the box body, and the fixing component is rotatably connected to the mounting support.

[0033] According to another aspect of the present invention, the present invention also provides a crusher, including a box body, a counterattack plate, a rotor, and the crusher counterattack plate gap adjusting device according to any one of the above technical solutions, and the crusher counterattack plate gap adjusting device is used to adjust the distance between the counterattack plate and the rotor.

[0034] Optionally, there are two crusher counterattack plate gap adjusting devices, and the two crusher counterattack plate gap adjusting devices are respectively arranged at both ends in the width direction of the counterattack plate. A sprocket is sleeved outside the adjusting nut of each crusher counterattack plate gap adjusting device, and a chain is wound between the two sprockets.

[0035] The beneficial effects of the present invention are as follows:

[0036] The present invention provides a crusher counterattack plate gap adjusting device, including a fixing component, a sleeve, an elastic member, a locking pin, an adjusting rod, and an adjusting nut. When it is necessary to adjust the gap between the counterattack plate and the envelope surface of the rotor, first insert the locking pin into the locking hole so that one end of the locking pin extends into the installation cavity and engages with the annular flange on the sleeve. At this time, the sleeve is locked; then rotate the adjusting nut to make the adjusting rod extend or retract the corresponding length as needed; finally, pull out the locking pin to release the locking of the sleeve. By setting the locking of the locking pin and the sleeve, it is possible to avoid the adjustment distance being absorbed by the elastic member due to the counterattack plate being blocked during gap adjustment, thereby ensuring both the timeliness and accuracy of gap adjustment, and also being able to avoid the counterattack plate being instantly ejected and damaged after the blockage is released due to vibration or other reasons, protecting the counterattack plate and the rotor. In addition, after releasing the locking of the sleeve, when large pieces of materials or metals enter the crusher and impact the counterattack plate, it is possible to avoid them by compressing the elastic member, further protecting the counterattack plate.

[0037] The present invention also provides a crusher, including a box body, a counterattack plate, and the above-mentioned crusher counterattack plate gap adjusting device. Since the crusher adopts the above-mentioned crusher counterattack plate gap adjusting device, the service lives of the counterattack plate and the rotor are relatively long, and the particle size of the discharged material is relatively accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a partial cross-sectional view of the crusher counterattack plate gap adjusting device from a perspective provided by Embodiment 1 of the present invention;

[0039] Figure 2Partial cross-sectional view of the counterattack plate clearance adjustment device of the crusher from another perspective provided in Embodiment 1 of the present invention;

[0040] Figure 3 Schematic diagram of the cooperation of the first driving member, locking pin, fixing component and annular flange provided in Embodiment 1 of the present invention;

[0041] Figure 4 For Figure 1 Enlarged view at A;

[0042] Figure 5 For Figure 2 Enlarged view at B;

[0043] Figure 6 Partial cross-sectional view of the counterattack plate clearance adjustment device of the crusher from one perspective provided in Embodiment 2 of the present invention;

[0044] Figure 7 Partial cross-sectional view of the counterattack plate clearance adjustment device of the crusher from another perspective provided in Embodiment 2 of the present invention;

[0045] Figure 8 Schematic diagram of the structure of the crusher provided in Embodiment 3 of the present invention;

[0046] Figure 9 Schematic diagram of the structure of the counterattack plate clearance adjustment device of the crusher provided in Embodiment 3 of the present invention;

[0047] Figure 10 Partially enlarged view of the cross-sectional view of the counterattack plate clearance adjustment device of the crusher provided in Embodiment 3 of the present invention.

[0048] In the figure:

[0049] 10, box body; 20, counterattack plate; 30, rotor;

[0050] 100, fixing component; 101, installation cavity; 110, installation cylinder; 111, connecting edge; 120, pressure plate; 130, adjusting screw; 140, locking nut; 150, elastic dust cover; 160, floating cylinder; 170, driven gear; 180, driving gear; 190, second driving member;

[0051] 200. Sleeve; 210. Annular flange; 300. Elastic member; 400. Lock pin; 500. Adjusting rod; 510. Hinged fork head; 511. Connecting plate; 512. Hinged arm; 513. First rotating shaft; 520. Connecting column; 530. Anti-rotation pressure plate; 600. Adjusting nut; 700. First driving member; 800. Guide rod; 810. Limiting head; 900. Connecting cylinder; 910. First bearing; 920. First retaining ring; 1000. Third driving member; 1010. Connecting head; 1100. Mounting support; 1200. Sprocket; 1300. Chain. Detailed implementation manners

[0052] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0053] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and moreover, the first feature being "above", "above" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "below" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0054] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mount", "connect" and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0055] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0056] Embodiment 1

[0057] This embodiment provides a gap adjustment device for the impact plate of a crusher, which can realize the avoidance of the impact plate for large pieces of materials or metal sundries. At the same time, the gap adjustment is safe and reliable, effectively protecting the impact plate and the rotor.

[0058] Specifically, as Figures 1 - 5 shown, the gap adjustment device for the impact plate of the crusher includes a fixing assembly 100, a sleeve 200, an elastic member 300, a locking pin 400, an adjusting rod 500, and an adjusting nut 600.

[0059] Among them, the fixing assembly 100 is installed outside the crusher housing and is used to fix the gap adjustment device for the impact plate of the crusher. The fixing assembly 100 includes an installation cavity 101 and a locking hole communicating with the installation cavity 101. A first through hole is provided on the bottom wall of the installation cavity 101. One end of the sleeve 200 is slidably disposed in the installation cavity 101, and a ring flange 210 is provided on the sleeve 200. The elastic member 300 is sleeved outside the sleeve 200. One end of the elastic member 300 abuts against the ring flange 210, and the other end abuts against the top wall of the installation cavity 101. The locking pin 400 is used to extend into the installation cavity 101 through the locking hole and engage with the ring flange 210 to limit the sliding of the sleeve 200. The adjusting rod 500 passes through the sleeve 200. One end of the adjusting rod 500 passes through the first through hole and the housing and is hinged to the impact plate. A first external thread is provided at the other end of the adjusting rod 500. The adjusting nut 600 is disposed at the other end of the sleeve 200 and can rotate around its own axis. The other end of the adjusting rod 500 is connected to the adjusting nut 600 through the first external thread. The adjusting rod 500 drives the sleeve 200 to slide through the adjusting nut 600 when pushed.

[0060] When there is no need to adjust the gap between the impact plate and the envelope surface of the rotor of the crusher, the locking pin 400 is separated from the annular flange 210, that is, the sleeve 200 can slide in the installation cavity 101. When a large piece of material or metal enters the crusher and impacts the impact plate, the adjusting rod 500 will be subjected to a thrust force. Since the sleeve 200 connected to the other end of the adjusting rod 500 through the adjusting nut 600 can slide in the installation cavity 101, after the adjusting rod 500 is subjected to the thrust force, it can drive the impact plate away from the rotor to avoid the large piece of material or metal, and prevent the impact plate from being damaged by strong impact. When the large piece of material or metal leaves the crusher, the adjusting rod 500 can be reset under the action of the elastic member 300 to ensure the reliability of the impact plate during operation.

[0061] If the sleeve 200 does not have the locking performance relative to the fixed component 100, when the impact plate is in a jammed state and the jamming force is greater than the elastic force of the elastic member 300, and at this time it is necessary for the impact plate to be further close to the rotor, during the process of controlling the adjusting rod 500 to extend through the adjusting nut 600, the adjusting rod 500 will drive the sleeve 200 to retreat due to the jamming force, so that although the adjusting rod 500 extends relative to the adjusting nut 600 by the required length, in fact, the position of the impact plate has not changed, and the gap adjustment effect is not good. If the jamming disappears due to reasons such as the vibration of the crusher, under the action of the elastic restoring force of the elastic member 300, the adjusting rod 500 will drive the impact plate to pop out instantly, resulting in the impact plate hitting the material or the rotor at a relatively high speed, causing damage to the impact plate and the rotor.

[0062] Based on the above problems, the crusher impact plate gap adjustment device provided in this embodiment sets the locking structure of the sleeve 200, that is, the cooperation between the locking pin 400 and the annular flange 210. Specifically, when it is necessary to adjust the gap between the impact plate and the rotor, first insert the locking pin 400 into the installation cavity 101 and engage it with the annular flange 210. At this time, the sleeve 200 is locked, that is, the sleeve 200 cannot slide in the installation cavity 101; then rotate the adjusting nut 600 to make the adjusting rod 500 extend or retract by the corresponding length as required; finally, pull out the locking pin 400 to release the locking of the sleeve 200. By setting the locking of the locking pin 400 and the sleeve 200, it is possible to avoid the adjustment distance being absorbed by the elastic member 300 due to the jamming of the impact plate during gap adjustment, thereby ensuring both the timeliness and accuracy of gap adjustment, and avoiding damage to the impact plate and the rotor caused by the impact plate being instantly popped out after the jamming is released due to reasons such as vibration.

[0063] It should be noted that after the locking pin 400 is engaged with the annular flange 210, rotate the adjusting nut 600 to make the adjusting rod 500 extend and push the impact plate. At this time, the thrust force of the adjusting rod 500 on the impact plate is greater than the jamming force of the impact plate, that is, it can ensure that the impact plate is adjusted in place.

[0064] It should be noted that when the adjusting rod 500 is not subject to external force, the sleeve 200 is stationary relative to the fixed assembly 100, and the elastic member 300 will not be compressed due to the sliding of the sleeve 200. The position of the lock hole should correspond to the position of the annular flange 210 under the above working conditions to ensure that the lock pin 400 can be well engaged with the annular flange 210.

[0065] It can be understood that the elastic member 300 is optional but not limited to a spring. When the elastic member 300 is a spring, 1 / 2 pressing rings can be provided at both ends of the spring, and the ends are ground flat, and the assembly effect is better.

[0066] Furthermore, continue to refer to Figure 2 and Figure 3 , a first driving member 700 is provided on the fixed assembly 100, and the output end of the first driving member 700 is connected to the lock pin 400, which is used to drive the lock pin 400 to slide in the lock hole, so that the lock pin 400 extends into the installation cavity 101 and engages with the annular flange 210, or the lock pin 400 leaves the installation cavity 101 and separates from the annular flange 210. When the lock pin 400 is engaged with the annular flange 210, the sleeve 200 is locked, and when the lock pin 400 is separated from the annular flange 210, the sleeve 200 is unlocked. By setting the first driving member 700 to realize the movement of the lock pin 400, the locking and unlocking of the sleeve 200 can be automatically performed, improving the operation convenience of the counterattack plate gap adjustment device of the crusher.

[0067] Optionally, the first driving member 700 can be a mechanism capable of outputting telescopic motion such as a hydraulic cylinder, an electromagnet, an electric push rod, a linear motor, etc.

[0068] Optionally, in a possible embodiment, a clamping groove can be provided on the annular flange 210, and the lock pin 400 is inserted into the clamping groove to achieve engagement with the annular flange 210. With this setting, the structure is simple and the clamping stability is better.

[0069] Of course, in other possible embodiments, the engagement between the annular flange 210 and the lock pin 400 can also be achieved by the abutment of the top surface of the annular flange 210 and the lock pin 400. The structure is simple and it is convenient for the processing of the annular flange 210.

[0070] Furthermore, in order to improve the locking stability of the sleeve 200, a plurality of lock holes can be provided, and each lock hole is correspondingly provided with a lock pin 400. In this embodiment, two lock holes are provided, and the two lock holes are respectively arranged on the opposite sides in the radial direction of the adjusting rod 500. In other embodiments, the number and arrangement method of the lock holes can also be other, which can be set according to actual needs, and the present application does not make specific limitations.

[0071] It should be noted that the structure of the fixing component 100 can be set according to actual needs. The part of the fixing component 100 close to the bottom of the installation cavity 101 forms the bottom wall of the installation cavity 101, and the part of the fixing component 100 close to the top of the installation cavity 101 forms the top wall of the installation cavity 101.

[0072] Optionally, referring further to Figure 1 , in this embodiment, the fixing component 100 includes an installation cylinder 110, a pressure plate 120, an adjusting screw 130 and a locking nut 140.

[0073] Among them, the installation cylinder 110 is installed outside the box. The installation cylinder 110 includes a first cylindrical structure extending along the axis. The top end of the first cylindrical structure is provided with an opening, the bottom end of the first cylindrical structure is closed by a bottom plate, a first through hole is provided on the bottom plate, a connecting edge 111 is provided on the outer peripheral wall of the first cylindrical structure, and a first connection hole is provided on the connecting edge 111.

[0074] The pressure plate 120 is disposed above the installation cylinder 110 with adjustable position and encloses the installation cavity 101 with the installation cylinder 110. A central hole is provided in the middle of the pressure plate 120. One end of the sleeve 200 slides through the central hole and extends into the first cylindrical structure. The other end of the elastic member 300 abuts against the pressure plate 120, and a second connection hole is also provided on the pressure plate 120.

[0075] The adjusting screw 130 passes through the first connection hole and the second connection hole. Moreover, the head of the adjusting screw 130 abuts against the pressure plate 120, and the tail of the adjusting screw 130 passes through the first connection hole and is connected to the locking nut 140.

[0076] With such a setting, by rotating the locking nut 140, the distance between the pressure plate 120 and the installation cylinder 110 can be adjusted (to make the pressure plate 120 close to or far from the installation cylinder 110), and then the pre-tightening force of the elastic member 300 can be adjusted to select a suitable pre-tightening force according to the use requirements, and the use flexibility is relatively high.

[0077] For the convenience of understanding, a method for adjusting the pre-tightening force of the elastic member 300 will be briefly introduced now:

[0078] Increase the pre-tightening force of the elastic member 300: Rotate the locking nut 140 in the first rotation direction, so that the head of the adjusting screw 130 drives the pressure plate 120 to approach the installation cylinder 110 until the pressure plate 120 moves to the required distance and then stop rotating the locking nut 140.

[0079] Decrease the pre-tightening force of the elastic member 300: Rotate the locking nut 140 in the second rotation direction, so that the pressure plate 120 is pushed away from the installation cylinder 110 under the elastic force of the elastic member 300 until the pressure plate 120 moves to the required distance and then stop rotating the locking nut 140.

[0080] It should be noted that the first rotation direction is opposite to the second rotation direction. For example, if the first rotation direction is the clockwise direction, then the second rotation direction is the counterclockwise direction.

[0081] The fixing component 100 has a simple structure, and the method of adjusting the pre-tightening force of the elastic member 300 is also relatively simple, which is convenient for operation.

[0082] Furthermore, continue to refer to Figure 1 , since part of the elastic member 300 is exposed between the mounting cylinder 110 and the pressure plate 120, it is easy for dust to enter the mounting cylinder 110. Therefore, an elastic dust cover 150 can be provided between the pressure plate 120 and the top of the mounting cylinder 110 to block dust. And since the elastic dust cover 150 has the ability of elastic deformation, it will not prevent the adjustment of the pre-tightening force. Specifically, one end of the elastic dust cover 150 is connected to the pressure plate 120, and the other end is connected to the top of the mounting cylinder 110.

[0083] Optionally, the elastic dust cover 150 can be a corrugated pipe.

[0084] Optionally, in order to improve the uniformity of the force on the pressure plate 120 and the mounting cylinder 110, a plurality of first connection holes are arranged at intervals on the connection edge 111 along the circumferential direction of the mounting cylinder 110. Similarly, a plurality of second connection holes are arranged at intervals along the circumferential direction of the pressure plate 120. The second connection holes are arranged in one-to-one correspondence with the first connection holes, and an adjusting screw 130 and a locking nut 140 are arranged corresponding to each pair of corresponding first connection holes and second connection holes.

[0085] Furthermore, continue to refer to Figure 1 , the counterattack plate gap adjustment device of the crusher further includes a guide rod 800. Specifically, a guide hole corresponding to the annular flange 210 is provided on the bottom wall of the installation cavity 101. The guide rod 800 is slidably inserted into the guide hole. One end of the guide rod 800 extending into the installation cavity 101 is connected to the annular flange 210. A limit head 810 is provided at the end of the guide rod 800 located outside the installation cavity 101, and the limit head 810 can abut against the bottom wall of the installation cavity 101. With such a setting, the guide rod 800 can guide the sleeve 200 to move along the axial direction of the guide rod 800 itself, which is beneficial to improving the smoothness of the sliding of the sleeve 200. And the limit head 810 can limit the maximum compression amount of the elastic member 300, which is beneficial to protecting the elastic member 300. In addition, by providing the guide rod 800, the position of the sleeve 200 can also be limited to ensure that the axis of the sleeve 200 coincides with the axis of the installation cavity 101.

[0086] In this embodiment, the guide hole is provided on the bottom plate of the mounting cylinder 110.

[0087] Optionally, along the circumference of the fixed component 100, a plurality of guiding holes are provided on the bottom wall of the installation cavity 101, and a guiding rod 800 is correspondingly arranged for each guiding hole. With such an arrangement, the force uniformity of the sleeve 200 can be improved, which is beneficial to enhancing the smoothness of the sliding of the sleeve 200.

[0088] Optionally, the structure of the guiding rod 800 assembled with the limiting head 810 can be a screw rod, the rod part of the screw rod is the guiding rod 800, and the head of the screw rod is the limiting head 810.

[0089] Further, as Figure 4 shown, in a possible embodiment, the other end of the sleeve 200 is fixedly connected to the connecting cylinder 900. A first bearing 910 is installed in the connecting cylinder 900. Part of the adjusting nut 600 is in interference fit with the inner ring of the first bearing 910, and the other part of the adjusting nut 600 extends out of the connecting cylinder 900. When it is necessary to rotate the adjusting nut 600, the adjusting nut 600 can be rotated by operating the part of the adjusting nut 600 that extends out of the connecting cylinder 900. By providing the first bearing 910 to enable the adjusting nut 600 to rotate around its own axis, the smoothness of the rotation of the adjusting nut 600 can be improved.

[0090] Optionally, a plurality of first bearings 910 can be provided, such as two, three, etc., which can be set according to actual needs.

[0091] Optionally, in order to reliably fix the first bearing 910, a first retaining ring 920 can be provided in the connecting cylinder 900, and the first bearing 910 abuts against the first retaining ring 920.

[0092] In other possible embodiments, a second bearing can also be directly installed at the opening of the other end of the sleeve 200. Part of the adjusting nut 600 is in interference fit with the inner ring of the second bearing, and the other part of the adjusting nut 600 extends out of the sleeve 200. With such an arrangement, the setting of the connecting cylinder 900 is omitted, and the components are simplified.

[0093] Optionally, a plurality of second bearings can also be provided, such as two, three, etc., which can be set according to actual needs, and the present application does not make specific limitations.

[0094] Optionally, in order to reliably fix the second bearing, a second retaining ring can be provided in the sleeve 200, and the second bearing abuts against the second retaining ring.

[0095] Further, continue to refer to Figure 1 and Figure 4, the gap adjustment device of the impact plate of the crusher further includes a third driving member 1000. A connecting head 1010 is provided at the output end of the third driving member 1000. A connecting groove is provided on the connecting head 1010. The connecting head is connected to the adjusting nut 600 through the connecting groove, such as the adjusting nut 600 being inserted into the connecting groove. The third driving member 1000 drives the adjusting nut 600 to rotate by driving the connecting head 1010 to rotate. With such a setting, the rotation of the adjusting nut 600 can be realized by controlling the third driving member 1000, thereby realizing the driving of the telescopic movement of the adjusting rod 500, and finally realizing the adjustment of the gap between the impact plate and the enveloping surface of the rotor. Compared with manual adjustment, it not only saves manpower but also improves the timeliness of the gap adjustment between the impact plate and the enveloping surface of the rotor.

[0096] Optionally, in order to reduce the risk of slipping between the connecting head 1010 and the adjusting nut 600, a plurality of first teeth can be provided on the outside of the adjusting nut 600 to form a gear, and a plurality of second teeth can be provided on the peripheral wall of the connecting groove to form an internal gear sleeve, and the internal gear sleeve meshes with the gear. The adjusting nut 600 can also be set to a polygonal structure, such as a hexagon. Correspondingly, the connecting groove is also hexagonal. Other structures can also be set to realize the connection between the connecting groove and the adjusting nut 600, which can be set according to actual needs, and the present application does not make specific limitations.

[0097] Optionally, in this embodiment, the third driving member 1000 includes a motor and a bipolar worm and worm gear reducer. The output end of the motor is connected to the input end of the bipolar worm and worm gear reducer, and the output end of the bipolar worm and worm gear reducer is connected to the connecting head 1010. Moreover, the mounting flange of the bipolar worm and worm gear reducer can be connected to the connecting cylinder 900 or the sleeve 200.

[0098] In other embodiments, the structure of the third driving member 1000 can also be other, such as a servo motor, etc., as long as it can output a rotational motion mechanism, which can be set according to actual needs, and the present application does not make specific limitations.

[0099] Further, continue to refer to Figure 1 and Figure 2 , one end of the adjusting rod 500 is provided with a hinged fork head 510, and the hinged fork head 510 is hinged to the impact plate. With such a setting, a reliable adjustment of the position of the impact plate can be realized.

[0100] Optionally, as Figure 1 and Figure 5As shown in the figure, one end of the adjusting rod 500 is provided with a connecting column 520, and the connecting column 520 is provided with a third external thread. The articulated fork head 510 includes a connecting plate 511 and articulated arms 512 arranged at both ends of the connecting plate 511. The connecting plate 511 is provided with a threaded hole, and the part of the connecting column 520 with the third external thread is connected to the connecting plate 511 through the threaded hole. One end of the adjusting rod 500 close to the connecting column 520 is provided with an anti-rotation notch, and an anti-rotation pressure plate 530 is detachably connected to the connecting plate 511. One side of the anti-rotation pressure plate 530 is inserted into the anti-rotation notch. Through the cooperation of the anti-rotation pressure plate 530 and the anti-rotation notch, the articulated fork head 510 can be prevented from rotating relative to the adjusting rod 500, thereby improving the connection reliability between the articulated fork head 510 and the adjusting rod 500.

[0101] Moreover, the two articulated arms 512 are respectively arranged on both sides of the impact plate, and the first rotating shaft 513 passes through the two articulated arms 512 and the impact plate to realize the articulation between the articulated fork head 510 and the impact plate.

[0102] Optionally, the anti-rotation pressure plate 530 can be detachably connected to the connecting plate 511 by means of bolt connection. The bolt connection structure is simple and convenient for assembly.

[0103] Furthermore, continue to refer to Figure 1 , this crusher impact plate gap adjustment device further includes a mounting support 1100. The mounting support 1100 is installed outside the box body, and the fixing component 100 is rotatably connected to the mounting support 1100. By providing the mounting support 1100, the fixing component 100 can rotate relative to the box body, which can prevent the adjusting rod 500 from being stuck.

[0104] Optionally, the mounting support 1100 can be fixed to the box body by means of bolt connection. The bolt connection structure is simple and convenient for assembly.

[0105] Optionally, the mounting support 1100 can be rotatably connected to the fixing component 100 through a second rotating shaft. The structure is simple and the rotation smoothness is better.

[0106] Optionally, in this embodiment, the mounting support 1100 is rotatably connected to the mounting cylinder 110.

[0107] Embodiment Two

[0108] This embodiment provides a crusher impact plate gap adjustment device, which has substantially the same structure as that of Embodiment One, and is only improved on the basis of Embodiment One. Therefore, only the differences between the two are described here, and the same structures as those in Embodiment One are not described again here. In this embodiment, the same or corresponding technical features as those in Embodiment One adopt the same reference numerals.

[0109] Specifically, as shown in Figure 6 and Figure 7As shown in the figure, in this embodiment, the fixing component 100 includes an installation cylinder 110, a floating cylinder 160, a driven gear 170, a driving gear 180, and a second driving member 190.

[0110] Among them, the installation cylinder 110 is installed outside the box. The installation cylinder 110 includes a first cylindrical structure extending along the axial direction. The top end of the first cylindrical structure is provided with an opening, the bottom end of the first cylindrical structure is closed by a bottom plate, a first through hole is provided on the bottom plate, and a second external thread is provided on the outer peripheral wall of the first cylindrical structure.

[0111] The floating cylinder 160 includes a second cylindrical structure extending along the axial direction. The top end of the second cylindrical structure is closed by a top plate, the bottom end of the second cylindrical structure is provided with an opening, an internal thread is provided on the inner peripheral wall of the second cylindrical structure. The floating cylinder 160 is connected to the part of the installation cylinder 110 with the second external thread through the internal thread, and forms an installation cavity 101 with the installation cylinder 110. The other end of the elastic member 300 abuts against the top plate of the floating cylinder 160. A second through hole is provided on the top plate of the floating cylinder 160. One end of the sleeve 200 slidably penetrates through the second through hole and extends into the first cylindrical structure.

[0112] The driven gear 170 is sleeved outside the floating cylinder 160 and rotates synchronously with the floating cylinder 160.

[0113] The driving gear 180 meshes with the driven gear 170.

[0114] The second driving member 190 is arranged on the installation cylinder 110. The output end of the second driving member 190 is connected to the driving gear 180 and is used to drive the driving gear 180 to rotate. The driving gear 180 drives the driven gear 170 to rotate, so that the top plate of the floating cylinder 160 approaches or moves away from the installation cylinder 110.

[0115] The fixing component 100 can realize the automatic adjustment of the pre-tightening force of the elastic member 300. Compared with manual adjustment, it saves manpower and can be remotely controlled, with high flexibility and timeliness of adjustment.

[0116] For the convenience of understanding, a method for adjusting the pre-tightening force of the elastic member 300 will be briefly introduced as follows:

[0117] Increasing the pre-tightening force of the elastic member 300: Control the second driving member 190 to drive the driving gear 180 to rotate in the first rotation direction. The driving gear 180 rotating in the first rotation direction will drive the driven gear 170 to rotate in the second rotation direction. The driven gear 170 rotating in the second rotation direction will drive the connected floating cylinder 160 to rotate in the second rotation direction. The floating cylinder 160 rotating in the second rotation direction will make its top plate approach the installation cylinder 110. Stop the second driving member 190 after the top plate moves the required distance.

[0118] Reduce the pre-tightening force of the elastic member 300: Control the second driving member 190 to drive the driving gear 180 to rotate in the second rotation direction. When the driving gear 180 rotates in the second rotation direction, it will drive the driven gear 170 to rotate in the first rotation direction. When the driven gear 170 rotates in the first rotation direction, it will drive the floating cylinder 160 connected thereto to rotate in the first rotation direction. When the floating cylinder 160 rotates in the first rotation direction, its top plate will move away from the mounting cylinder 110. After the top plate moves the required distance, control the second driving member 190 to stop.

[0119] It should be noted that the first rotation direction is opposite to the second rotation direction. For example, if the first rotation direction is the clockwise direction, the second rotation direction is the counterclockwise direction.

[0120] The fixing assembly 100 has a simple structure and is convenient for assembly. Moreover, the method for adjusting the pre-tightening force of the elastic member 300 is also relatively simple and convenient to operate.

[0121] Embodiment III

[0122] As Figure 8 shown, this embodiment provides a crusher, which includes a box body 10, a counterattack plate 20, a rotor 30, and the crusher counterattack plate gap adjustment device provided in Embodiment I or Embodiment II. The crusher counterattack plate gap adjustment device is used to adjust the distance between the counterattack plate 20 and the rotor 30.

[0123] Since the crusher adopts the above-mentioned crusher counterattack plate gap adjustment device, the service lives of the counterattack plate 20 and the rotor 30 are relatively long, and the discharging particle size of the material is relatively accurate.

[0124] Further, as Figure 9 and Figure 10 shown, there are two such crusher counterattack plate gap adjustment devices, and the two crusher counterattack plate gap adjustment devices are respectively arranged at both ends in the width direction of the counterattack plate 20. Moreover, a sprocket 1200 is sleeved outside the adjusting nut 600 of each crusher counterattack plate gap adjustment device, and a chain 1300 is wound between the two sprockets 1200. With such a setting, through the transmission of the chain 1300 and the sprockets 1200, the synchronous action of the two crusher counterattack plate gap adjustment devices can be realized, and further the uniformity of the adjustment of the gap between the counterattack plate 20 and the rotor 30 can be realized.

[0125] Optionally, for the solution of using the third driving member 1000 to drive the adjusting nut 600 to rotate, the third driving member 1000 can be provided only on one crusher counterattack plate gap adjustment device, which saves components.

[0126] Obviously, the above embodiments of the present invention are merely examples given to clearly illustrate the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. Crusher impact plate gap adjustment device, characterized in that: include: A fixing assembly (100) is installed outside a housing (10) of a crusher, and comprises a mounting cavity (101) and a locking hole communicating with the mounting cavity (101), wherein a first through hole is provided on a bottom wall of the mounting cavity (101); A sleeve (200), one end of which is slidably disposed in the installation cavity (101), and an annular flange (210) is provided on the sleeve (200); An elastic member (300) is sleeved outside the sleeve (200), one end of the elastic member (300) abuts against the annular flange (210), and the other end abuts against the top wall of the installation cavity (101); A locking pin (400) is used to extend into the installation cavity (101) through the locking hole and engage with the annular flange (210) to limit the sliding of the sleeve (200); An adjusting rod (500) is inserted into the sleeve (200), one end of the adjusting rod (500) passes through the first through hole and is hingedly connected to the box (10) and the impact plate (20), and the other end of the adjusting rod (500) is provided with a first external thread; The adjusting nut (600) is arranged at the other end of the sleeve (200) and can rotate around its own axis. The other end of the adjusting rod (500) is connected to the adjusting nut (600) through the first external thread. After the adjusting rod (500) is pushed, it drives the sleeve (200) to slide through the adjusting nut (600).

2. The crusher impact plate gap adjustment device according to claim 1, characterized in that: The fixing assembly (100) is provided with a first driving member (700), the output end of the first driving member (700) being connected to the locking pin (400) and being used for driving the locking pin (400) to slide in the locking hole, so that the locking pin (400) extends into the installation cavity (101) and engages with the annular flange (210), or the locking pin (400) leaves the installation cavity (101) and separates from the annular flange (210); And / or, the annular flange (210) is provided with a slot, and the locking pin (400) can be inserted into the slot.

3. The crusher impact plate gap adjustment device according to claim 1, characterized in that: The fixing assembly (100) comprises: A mounting tube (110) is mounted outside the box body (10), the mounting tube (110) comprising a first tubular structure extending in the axial direction, the top end of the first tubular structure is provided with an opening, the bottom end of the first tubular structure is closed by a bottom plate, the bottom plate is provided with the first through hole, the outer peripheral wall of the first tubular structure is provided with a connecting edge (111), and the connecting edge (111) is provided with a first connecting hole; A pressure plate (120) is adjustably arranged above the installation tube (110) and surrounds the installation cavity (101) with the installation tube (110). A central hole is provided in the middle of the pressure plate (120). One end of the sleeve (200) is slidably inserted into the central hole and extends into the first tubular structure. The other end of the elastic member (300) abuts against the pressure plate (120). A second connecting hole is also provided on the pressure plate (120); an adjusting screw (130), passing through the first connecting hole and the second connecting hole; A locking nut (140), the head of the adjusting screw (130) abuts against the pressure plate (120), and the tail of the adjusting screw (130) passes through the first connecting hole and is connected to the locking nut (140).

4. The crusher impact plate gap adjustment device according to claim 1, characterized in that: The fixing assembly (100) comprises: An installation cylinder (110) is installed outside the box body (10), the installation cylinder (110) comprising a first cylindrical structure extending in the axial direction, the top end of the first cylindrical structure is provided with an opening, the bottom end of the first cylindrical structure is closed by a bottom plate, the bottom plate is provided with the first through hole, and the outer peripheral wall of the first cylindrical structure is provided with a second external thread; The floating cylinder (160) comprises a second cylindrical structure extending in the axial direction, the top end of the second cylindrical structure is closed by a top plate, the bottom end of the second cylindrical structure is provided with an opening, the inner peripheral wall of the second cylindrical structure is provided with an internal thread, the floating cylinder (160) is connected to the second external thread of the mounting cylinder (110) through the internal thread, and forms the mounting cavity (101) with the mounting cylinder (110), the other end of the elastic member (300) is in contact with the top plate of the floating cylinder (160), the top plate of the floating cylinder (160) is provided with a second through hole, one end of the sleeve (200) is slidably arranged in the second through hole and extends into the first cylindrical structure; A driven gear (170) is sleeved outside the floating cylinder (160) and rotates synchronously with the floating cylinder (160); A driving gear (180) meshing with the driven gear (170); A second driving member (190) is disposed on the mounting cylinder (110). An output end of the second driving member (190) is connected to the driving gear (180) for driving the driving gear (180) to rotate. The driving gear (180) drives the driven gear (170) to rotate so that the top plate of the floating cylinder (160) approaches or moves away from the mounting cylinder (110).

5. The crusher impact plate gap adjustment device according to claim 1, characterized in that: A guide hole corresponding to the annular flange (210) is provided on the bottom wall of the installation cavity (101), and a guide rod (800) is slidably inserted into the guide hole. One end of the guide rod (800) extending into the installation cavity (101) is connected to the annular flange (210), and one end of the guide rod (800) located outside the installation cavity (101) is provided with a limit head (810), and the limit head (810) can abut against the bottom wall of the installation cavity (101).

6. The crusher impact plate gap adjustment device according to claim 1, characterized in that: The other end of the sleeve (200) is fixedly connected to the connecting tube (900), a first bearing (910) is installed in the connecting tube (900), a part of the adjusting nut (600) is interference fit with the inner ring of the first bearing (910), and another part of the adjusting nut (600) extends out of the connecting tube (900); Alternatively, a second bearing is installed at the opening of the other end of the sleeve (200), a portion of the adjusting nut (600) is interference fit with the inner ring of the second bearing, and another portion of the adjusting nut (600) extends out of the sleeve (200).

7. The crusher impact plate gap adjustment device according to any one of claims 1 to 6, characterized in that: The crusher impact plate gap adjustment device also includes a third driving member (1000). The output end of the third driving member (1000) is provided with a connecting head (1010). The connecting head (1010) is provided with a connecting groove. The connecting head (1010) is connected to the adjusting nut (600) via the connecting groove. The third driving member (1000) drives the connecting head (1010) to rotate, thereby driving the adjusting nut (600) to rotate.

8. The crusher impact plate gap adjustment device according to any one of claims 1 to 6, characterized in that: One end of the adjusting rod (500) is provided with a hinged fork (510), and the hinged fork (510) is hinged to the counterattack plate (20); And / or, the crusher impact plate gap adjustment device further comprises a mounting support (1100), wherein the mounting support (1100) is mounted outside the box body (10), and the fixing assembly (100) is rotatably connected to the mounting support (1100).

9. A crusher, characterized in that: The invention comprises a housing (10), an impact plate (20), a rotor (30) and a crusher impact plate gap adjustment device as claimed in any one of claims 1 to 8, wherein the crusher impact plate gap adjustment device is used to adjust the distance between the impact plate (20) and the rotor (30).

10. The crusher according to claim 9, characterized in that The crusher impact plate gap adjustment device is provided with two, and the two crusher impact plate gap adjustment devices are respectively arranged at two ends of the impact plate (20) in the width direction, and a sprocket (1200) is sleeved on the outer side of the adjustment nut (600) of each crusher impact plate gap adjustment device, and a chain (1300) is wound between the two sprockets (1200).

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