Crusher blow bar gap adjustment device and crusher

Abstract

The application relates to the technical field of crushers, and discloses a crusher impact plate gap adjusting device and a crusher. The crusher impact plate gap adjusting device comprises a fixing assembly, a sleeve, an elastic piece, a lock pin, an adjusting rod and an adjusting nut. The fixing assembly is installed outside the box body of the crusher and comprises a mounting cavity and a lock hole; one end of the sleeve is slidingly arranged in the mounting cavity; the elastic piece is sleeved outside the sleeve and one end of the elastic piece is abutted against an annular flange on the sleeve and the other end of the elastic piece is abutted against the top wall of the mounting cavity; the lock pin is used for extending into the mounting cavity through the lock hole and being clamped with the annular flange; the adjusting rod is arranged in the sleeve and one end of the adjusting rod is hinged with the impact plate through the first through hole in the bottom wall of the mounting cavity and the box body 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 crusher impact plate gap adjusting device can protect the impact plate and the gap adjustment is safe and reliable.

Description

Technical Field

[0001] This invention relates to the field of crusher technology, and in particular to a crusher impact plate gap adjustment device and a crusher. Background Technology

[0002] An impact hammer crusher mainly consists of a rotor, impact plates, and a gap adjustment device. The gap adjustment device is responsible for adjusting the gap between the impact plates and the rotor's motion envelope, thereby controlling the material's discharge particle size. A typical gap adjustment device includes an adjusting rod, one end of which is connected to the impact plate, and the other end passes through the crusher's housing and is connected to a nut. Tightening the nut pushes the adjusting rod forward or backward. Alternatively, the other end of the adjusting rod can be connected to a hydraulic system, which pushes or pulls the rod forward or backward, thus adjusting the position of the impact plates. However, both of these gap adjustment devices are rigidly connected to the impact plates. When large pieces of material or metal enter the crusher, the impact plates may be subjected to strong impacts, leading to structural deformation or damage.

[0003] Although some gap adjustment devices with buffering effects exist on the market, their overall structure is relatively complex, resulting in a large overall size. Furthermore, if the impact plate is stuck in the coal slime inside the crusher housing when gap adjustment is needed, even if the adjusting rod is moved, this adjustment distance will be absorbed by the buffer structure, meaning the impact plate doesn't actually move, thus affecting gap adjustment. Moreover, when the obstruction disappears under vibration or other operating conditions, the impact plate will instantly eject and impact the material or rotor, causing damage to the impact plate, rotor, and other components.

[0004] Therefore, there is an urgent need to propose a crusher impact plate gap adjustment device and a crusher to solve the above-mentioned technical problems. Summary of the Invention

[0005] According to one aspect of the present invention, the present invention provides a crusher impact plate gap adjustment device, which enables the impact plate to avoid large pieces of material or metallic debris. At the same time, the gap adjustment is safe and reliable, effectively protecting the impact plate and the rotor.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The crusher impact plate gap adjustment device includes:

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

[0009] A sleeve, one end of which is slidably disposed in the mounting cavity, is provided with an annular flange;

[0010] An elastic element is sleeved outside the sleeve, with one end of the elastic element abutting against the annular flange and the other end abutting against the top wall of the mounting cavity;

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

[0012] An adjusting rod is inserted through the sleeve. One end of the adjusting rod passes through the first through hole and the housing 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 located 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, it drives the sleeve to slide through the adjusting nut.

[0014] Optionally, the fixing component is provided with a first driving member, the output end of the first driving member being connected to the locking pin, for driving the locking pin to slide in the lock hole, so that the locking pin extends into the mounting cavity and engages with the annular flange, or so that the locking pin leaves the mounting cavity and separates from the annular flange;

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

[0016] Optionally, the fixing component includes:

[0017] The mounting cylinder is installed outside the box. The mounting 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. The bottom plate is provided with a first through hole. The outer peripheral wall of the first cylindrical structure is provided with a connecting edge. The connecting edge is provided with a first connecting hole.

[0018] The pressure plate is adjustablely positioned above the mounting cylinder and forms the mounting cavity with the mounting cylinder. The pressure plate has a central hole in the middle. One end of the sleeve slides through the central hole and extends into the first cylindrical structure. The other end of the elastic element abuts against the pressure plate. The pressure plate is also provided with a second connecting hole.

[0019] An adjusting screw passes through the first connecting hole and the second connecting hole;

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

[0021] Optionally, the fixing component includes:

[0022] The mounting cylinder is installed outside the housing. The mounting cylinder includes a first cylindrical structure extending axially. 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 a first through hole. The outer peripheral wall of the first cylindrical structure is provided with a second external thread.

[0023] A floating cylinder includes a second cylindrical structure extending axially. The top end of the second cylindrical structure is closed by a top plate, and the bottom end of the second cylindrical structure has an opening. The inner circumferential wall of the second cylindrical structure has an internal thread. The floating cylinder is connected to the mounting cylinder at the location of the second external thread through the internal thread, and together with the mounting cylinder, they form the mounting cavity. The other end of the elastic element abuts against the top plate of the floating cylinder. The top plate of the floating cylinder has a second through hole. 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] A second driving component is disposed on the mounting cylinder. The output end of the second driving component 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, causing the top plate of the floating cylinder to move closer to or further away from the mounting cylinder.

[0027] Optionally, the bottom wall of the mounting cavity is provided with a guide hole corresponding to the annular flange, the guide rod slides through the guide hole, one end of the guide rod extending into the mounting cavity is connected to the annular flange, and the other end of the guide rod outside the mounting cavity is provided with a limiting head, which can abut against the bottom wall of the mounting cavity.

[0028] Optionally, the other end of the sleeve is fixedly connected to the connecting cylinder, a first bearing is installed inside the connecting cylinder, part of the adjusting nut is interference-fitted 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 at the other end of the sleeve, with part of the adjusting nut having an interference fit with the inner ring of the second bearing, and the other part of the adjusting nut extending out of the sleeve.

[0030] Optionally, the crusher impact plate gap adjustment device further includes a third driving component. The output end of the third driving component is provided with a connector, and the connector is provided with a connecting groove. The connecting cylinder is connected to the adjusting nut through the connecting groove. The third driving component drives the adjusting nut to rotate by driving the connector to rotate.

[0031] Optionally, one end of the adjusting rod is provided with a hinged fork, which is hinged to the counter-attack plate;

[0032] And / or, the crusher impact plate gap adjustment device further includes a mounting support, which is installed outside the housing, 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 housing, an impact plate, a rotor, and a crusher impact plate gap adjustment device as described in any of the above technical solutions, wherein the crusher impact plate gap adjustment device is used to adjust the distance between the impact plate and the rotor.

[0034] Optionally, the crusher impact plate gap adjustment device is provided in two parts, and the two impact plate gap adjustment devices are respectively located at both ends of the impact plate width direction. Each impact plate gap adjustment device has a sprocket sleeved on the adjusting nut, and the chain is wound between the two sprockets.

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

[0036] This invention provides a device for adjusting the gap between the impact plate and the rotor in a crusher, comprising a fixing assembly, a sleeve, an elastic element, a locking pin, an adjusting rod, and an adjusting nut. When adjusting the gap between the impact plate and the rotor's envelope surface, the locking pin is first inserted into the locking hole, so that one end of the locking pin extends into the mounting cavity and engages with the annular flange on the sleeve, locking the sleeve. Then, the adjusting nut is rotated to extend or retract the adjusting rod by the required length. Finally, the locking pin is pulled out to release the lock on the sleeve. By locking the sleeve with the locking pin, the adjustment distance is prevented from being absorbed by the elastic element due to the impact plate being blocked during gap adjustment. This ensures both the timeliness and accuracy of the gap adjustment and prevents the impact plate from being instantly ejected and damaged after the blockage is released due to vibration, protecting both the impact plate and the rotor. Furthermore, after releasing the sleeve's lock, when large pieces of material or metal enter the crusher and impact the impact plate, they can be deflected by compressing the elastic element, further protecting the impact plate.

[0037] The present invention also provides a crusher, including a housing, an impact plate, and the aforementioned crusher impact plate gap adjustment device. Because this crusher employs the aforementioned crusher impact plate gap adjustment device, the service life of the impact plate and rotor is longer, and the output particle size of the material is more precise. Attached Figure Description

[0038] Figure 1 This is a partial cross-sectional view of the crusher impact plate gap adjustment device from one perspective, provided in Embodiment 1 of the present invention;

[0039] Figure 2This is a partial cross-sectional view of the crusher impact plate gap adjustment device from another perspective provided in Embodiment 1 of the present invention;

[0040] Figure 3 This is a schematic diagram showing the engagement of the first driving member, locking pin, fixing assembly, and annular flange provided in Embodiment 1 of the present invention;

[0041] Figure 4 for Figure 1 Enlarged view at point A;

[0042] Figure 5 for Figure 2 Enlarged view at point B;

[0043] Figure 6 This is a partial cross-sectional view of the crusher impact plate gap adjustment device from one perspective, provided in Embodiment 2 of the present invention;

[0044] Figure 7 This is a partial cross-sectional view of the crusher impact plate gap adjustment device from another perspective provided in Embodiment 2 of the present invention;

[0045] Figure 8 This is a schematic diagram of the structure of the crusher provided in Embodiment 3 of the present invention;

[0046] Figure 9 This is a schematic diagram of the structure of the crusher impact plate gap adjustment device provided in Embodiment 3 of the present invention;

[0047] Figure 10 This is a partially enlarged cross-sectional view of the crusher impact plate gap adjustment device provided in Embodiment 3 of the present invention.

[0048] In the picture:

[0049] 10. Housing; 20. Impact plate; 30. Rotor;

[0050] 100. Fixing component; 101. Mounting cavity; 110. Mounting 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 drive component;

[0051] 200, Sleeve; 210, Annular Flange; 300, Elastic Component; 400, Locking Pin; 500, Adjusting Rod; 510, Hinge Fork; 511, Connecting Plate; 512, Hinge Arm; 513, First Rotating Shaft; 520, Connecting Column; 530, Anti-rotation Pressure Plate; 600, Adjusting Nut; 700, First Driving Component; 800, Guide Rod; 810, Limiting Head; 900, Connecting Cylinder; 910, First Bearing; 920, First Retaining Ring; 1000, Third Driving Component; 1010, Connecting Head; 1100, Mounting Support; 1200, Sprocket; 1300, Chain. Detailed Implementation

[0052] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0054] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0055] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference 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] Example 1

[0057] This embodiment provides a crusher impact plate gap adjustment device, which can enable the impact plate to avoid large pieces of material or metal debris. At the same time, the gap adjustment is safe and reliable, effectively protecting the impact plate and rotor.

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

[0059] The fixing component 100 is installed outside the crusher housing and is used to fix the impact plate gap adjustment device of the crusher. The fixing component 100 includes a mounting cavity 101 and a locking hole communicating with the mounting cavity 101. The bottom wall of the mounting cavity 101 is provided with a first through hole. One end of the sleeve 200 is slidably disposed in the mounting cavity 101, and the sleeve 200 is provided with an annular flange 210. The elastic element 300 is sleeved on the outside of the sleeve 200, one end of the elastic element 300 abuts against the annular flange 210, and the other end abuts against the top wall of the mounting cavity 101. The locking pin 400 is used to extend into the mounting cavity 101 through the locking hole and engage with the annular 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, and the other end of the adjusting rod 500 is provided with a first external thread. The adjusting nut 600 is located 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. When the adjusting rod 500 is pushed, it drives the sleeve 200 to slide through the adjusting nut 600.

[0060] When the gap adjustment device for the impact plate of the crusher does not require adjustment of the gap between the impact plate and the rotor's envelope surface, the locking pin 400 separates from the annular flange 210, allowing the sleeve 200 to slide within the mounting cavity 101. When large pieces of material or metal enter the crusher and impact the impact plate, the adjusting rod 500 is subjected to a thrust. Since the sleeve 200, connected to the other end of the adjusting rod 500 via the adjusting nut 600, can slide within the mounting cavity 101, the thrust on the adjusting rod 500 can move the impact plate away from the rotor, thus avoiding large pieces of material or metal and preventing damage to the impact plate from strong impacts. After the large pieces of material or metal leave the crusher, the adjusting rod 500 can reset under the action of the elastic element 300, ensuring the reliability of the impact plate's operation.

[0061] If the sleeve 200 lacks locking capability relative to the fixed component 100, when the impact plate is jammed and the jamming resistance exceeds the elastic force of the elastic element 300, and the impact plate needs to move closer to the rotor, the adjusting rod 500 will extend due to the jamming resistance, causing the sleeve 200 to retract. This means that although the adjusting rod 500 extends the required length relative to the adjusting nut 600, the actual position of the impact plate remains unchanged, resulting in poor gap adjustment. If the jamming disappears due to crusher vibration or other reasons, the adjusting rod 500 will cause the impact plate to pop out instantly under the elastic restoring force of the elastic element 300, causing the impact plate to strike the material or rotor at a high speed, resulting in damage to both the impact plate and the rotor.

[0062] Based on the above problems, the crusher impact plate gap adjustment device provided in this embodiment is equipped with a locking structure for the sleeve 200, namely, the engagement of 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, firstly, the locking pin 400 is inserted into the mounting cavity 101 and engaged with the annular flange 210. At this time, the sleeve 200 is locked, meaning that the sleeve 200 cannot slide within the mounting cavity 101. Then, the adjusting nut 600 is rotated to extend or retract the adjusting rod 500 by the required length. Finally, the locking pin 400 is pulled out to release the lock on the sleeve 200. By setting the locking pin 400 and the sleeve 200, the adjustment distance can be avoided by the elastic element 300 being absorbed when the impact plate is blocked during gap adjustment. This ensures both the timeliness and accuracy of the gap adjustment and prevents the impact plate from being instantly ejected and damaged after the blockage is released due to vibration or other reasons, thus protecting the impact plate and the rotor.

[0063] It is worth noting that when the locking pin 400 engages with the annular flange 210, rotating the adjusting nut 600 causes the adjusting rod 500 to extend and push the counter-attack plate. At this time, the pushing force of the adjusting rod 500 on the counter-attack plate is greater than the force that the counter-attack plate is blocked, which ensures that the counter-attack plate is adjusted to the correct position.

[0064] It is worth noting that when the adjusting rod 500 is not subjected to external force, the sleeve 200 remains stationary relative to the fixed assembly 100, and the elastic element 300 will not be compressed due to the sliding of the sleeve 200. The position of the locking hole should be opposite to the position of the annular flange 210 under the above working conditions to ensure that the locking pin 400 can engage well with the annular flange 210.

[0065] It is understandable that the elastic element 300 can be selected, but is not limited to, a spring. When the elastic element 300 is a spring, a 1 / 2 compression ring can be set at each end of the spring, and the ends can be ground flat for better assembly results.

[0066] Further, see also Figure 2 and Figure 3 The fixing assembly 100 is equipped with a first driving member 700. The output end of the first driving member 700 is connected to the locking pin 400, which drives the locking pin 400 to slide within the locking hole, so that the locking pin 400 extends into the mounting cavity 101 and engages with the annular flange 210, or so that the locking pin 400 leaves the mounting cavity 101 and separates from the annular flange 210. When the locking pin 400 engages with the annular flange 210, the sleeve 200 is locked; when the locking pin 400 separates from the annular flange 210, the sleeve 200 is unlocked. By setting the first driving member 700 to realize the movement of the locking pin 400, the locking and unlocking of the sleeve 200 can be carried out automatically, improving the operational convenience of the crusher impact plate gap adjustment device.

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

[0068] Optionally, in one possible embodiment, a slot can be provided on the annular flange 210, and the locking pin 400 is inserted into the slot to achieve engagement with the annular flange 210. This configuration results in a simple structure and better engagement stability.

[0069] Of course, in other possible embodiments, the engagement of the annular flange 210 and the locking pin 400 can also be achieved by the abutment of the top surface of the annular flange 210 with the locking pin 400. The structure is simple and easy to process.

[0070] Furthermore, to improve the stability of the sleeve 200 locking, multiple locking holes can be provided, each corresponding to a locking pin 400. In this embodiment, two locking holes are provided, located on opposite sides of the adjusting rod 500 in the radial direction. In other embodiments, the number and arrangement of locking holes can also be different, depending on actual needs, and this application does not impose specific limitations.

[0071] It is worth noting that the structure of the fixing component 100 can be set according to actual needs. The part of the fixing component 100 near the bottom of the mounting cavity 101 forms the bottom wall of the mounting cavity 101, and the part of the fixing component 100 near the top of the mounting cavity 101 forms the top wall of the mounting cavity 101.

[0072] Optionally, see [link to relevant documentation] Figure 1 In this embodiment, the fixing component 100 includes a mounting cylinder 110, a pressure plate 120, an adjusting screw 130, and a locking nut 140.

[0073] The mounting cylinder 110 is installed outside the box. The mounting 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. The bottom plate is provided with a first through hole. The outer peripheral wall of the first cylindrical structure is provided with a connecting edge 111. The connecting edge 111 is provided with a first connecting hole.

[0074] The pressure plate 120 is adjustablely positioned above the mounting cylinder 110 and forms a mounting cavity 101 with the mounting cylinder 110. The pressure plate 120 has a central hole in the middle. One end of the sleeve 200 slides through the central hole and extends into the first cylindrical structure. The other end of the elastic element 300 abuts against the pressure plate 120. The pressure plate 120 is also provided with a second connecting hole.

[0075] The adjusting screw 130 passes through the first connecting hole and the second connecting hole, and 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.

[0076] With this configuration, the distance between the pressure plate 120 and the mounting cylinder 110 can be adjusted by rotating the locking nut 140 (so that the pressure plate 120 is closer to or farther away from the mounting cylinder 110), thereby adjusting the preload of the elastic element 300. This allows for the selection of a suitable preload according to usage requirements, providing high flexibility in use.

[0077] To facilitate understanding, the method for adjusting the preload of the elastic element 300 is briefly introduced below:

[0078] Increase the preload of the elastic element 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 closer to the mounting cylinder 110 until the pressure plate 120 moves to the required distance and then stop rotating the locking nut 140.

[0079] Reduce the preload of the elastic element 300: Rotate the locking nut 140 in the second rotation direction so that the pressure plate 120 is pushed away from the mounting cylinder 110 under the elastic force of the elastic element 300 until the pressure plate 120 moves to the required distance and then stop rotating the locking nut 140.

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

[0081] The fixing component 100 has a simple structure, and the method for adjusting the preload of the elastic element 300 is also relatively simple and easy to operate.

[0082] Further, see also Figure 1 Since some of the elastic element 300 is exposed between the mounting cylinder 110 and the pressure plate 120, dust can easily enter the mounting cylinder 110. Therefore, an elastic dust cover 150 can be provided between the top of the pressure plate 120 and the mounting cylinder 110 to block dust. Furthermore, since the elastic dust cover 150 has elastic deformation capability, it will not hinder the adjustment of the preload. 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 flexible dust cover 150 can be a corrugated pipe.

[0084] Optionally, to improve the uniformity of force distribution on the pressure plate 120 and the mounting cylinder 110, a plurality of first connecting holes are provided at intervals on the connecting edge 111 along the circumference of the mounting cylinder 110. Similarly, a plurality of second connecting holes are provided at intervals along the circumference of the pressure plate 120, with each second connecting hole corresponding to a first connecting hole. Each pair of corresponding first and second connecting holes is provided with an adjusting screw 130 and a locking nut 140.

[0085] Further, see also Figure 1 The crusher impact plate gap adjustment device also includes a guide rod 800. Specifically, a guide hole corresponding to the annular flange 210 is provided on the bottom wall of the mounting cavity 101. The guide rod 800 slides through the guide hole, with one end of the guide rod 800 extending into the mounting cavity 101 connected to the annular flange 210. The other end of the guide rod 800 outside the mounting cavity 101 is provided with a limiting head 810, which can abut against the bottom wall of the mounting cavity 101. This configuration allows the guide rod 800 to guide the sleeve 200 to move along its own axial direction, improving the smoothness of the sleeve 200's sliding. Furthermore, the limiting head 810 can limit the maximum compression of the elastic element 300, protecting the elastic element 300. Additionally, 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 mounting cavity 101.

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

[0087] Optionally, multiple guide holes are provided on the bottom wall of the mounting cavity 101 along the circumference of the fixing component 100, and a guide rod 800 is provided for each guide hole. This arrangement can improve the uniformity of force on the sleeve 200, thereby improving the smoothness of the sleeve 200 sliding.

[0088] Optionally, the structure in which the guide rod 800 and the limiting head 810 are assembled can be a screw, with the shank of the screw being the guide rod 800 and the head of the screw being the limiting head 810.

[0089] Furthermore, such as Figure 4 As shown, in one possible embodiment, the other end of the sleeve 200 is fixedly connected to the connecting sleeve 900. A first bearing 910 is installed inside the connecting sleeve 900. Part of the adjusting nut 600 is interference-fitted with the inner ring of the first bearing 910, and the other part of the adjusting nut 600 extends out of the connecting sleeve 900. When it is necessary to rotate the adjusting nut 600, the part of the adjusting nut 600 extending out of the connecting sleeve 900 is used to rotate the adjusting nut 600. By setting 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, multiple first bearings 910 can be set, such as two or three, depending on actual needs.

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

[0092] In other possible embodiments, the second bearing can be directly installed at the opening at the other end of the sleeve 200, with part of the adjusting nut 600 having an interference fit with the inner ring of the second bearing, and the other part of the adjusting nut 600 extending out of the sleeve 200. This configuration eliminates the need for the connecting sleeve 900, simplifying the components.

[0093] Optionally, multiple second bearings can be provided, such as two or three, depending on actual needs. This application does not impose specific limitations.

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

[0095] Further, see also Figure 1 and Figure 4The crusher impact plate gap adjustment device also includes a third driving component 1000. The output end of the third driving component 1000 is equipped with a connector 1010, which has a connecting groove. The connector 1010 is connected to an adjusting nut 600 via the connecting groove, with the adjusting nut 600 inserted into the connecting groove. The third driving component 1000 drives the connecting head 1010 to rotate, thereby rotating the adjusting nut 600. This configuration allows control of the third driving component 1000 to rotate the adjusting nut 600, which in turn drives the extension and retraction of the adjusting rod 500, ultimately adjusting the gap between the impact plate and the rotor's envelope surface. Compared to manual adjustment, this saves manpower and improves the timeliness of gap adjustment between the impact plate and the rotor's envelope surface.

[0096] Optionally, to reduce the risk of slippage between the connector 1010 and the adjusting nut 600, multiple first teeth can be provided on the outside of the adjusting nut 600 to form a gear, and multiple second teeth can be provided on the peripheral wall of the connecting groove to form an inner gear sleeve, which meshes with the gear. Alternatively, the adjusting nut 600 can be designed as a polygonal structure, such as a hexagon, and the connecting groove can also be hexagonal. Other structures can also be used to connect the connecting groove and the adjusting nut 600, depending on actual needs; this application does not impose specific limitations.

[0097] Optionally, in this embodiment, the third driving component 1000 includes a motor and a double-stage worm gear reducer. The output end of the motor is connected to the input end of the double-stage worm gear reducer, and the output end of the double-stage worm gear reducer is connected to the connector 1010. Furthermore, the mounting flange of the double-stage 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 component 1000 can also be other, such as a servo motor, etc., as long as the mechanism can output rotational motion. It can be set according to actual needs, and this application does not make specific limitations.

[0099] Further, see also Figure 1 and Figure 2 One end of the adjusting rod 500 is provided with a hinged fork 510, which is hinged to the counter-attack plate. This configuration enables reliable adjustment of the position of the counter-attack plate.

[0100] Optionally, such as Figure 1 and Figure 5As shown, one end of the adjusting rod 500 is provided with a connecting post 520, and the connecting post 520 is provided with a third external thread. The articulated fork head 510 includes a connecting plate 511 and articulated arms 512 provided at both ends of the connecting plate 511. The connecting plate 511 is provided with threaded holes. The connecting post 520 is connected to the connecting plate 511 through the threaded holes at the part with the third external thread. The end of the adjusting rod 500 near the connecting post 520 is provided with an anti-rotation notch. An anti-rotation pressure plate 530 is detachably connected to the connecting plate 511, and 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 reliability of the connection between the articulated fork head 510 and the adjusting rod 500.

[0101] Furthermore, two hinge arms 512 are respectively located on both sides of the counter-attack plate, and the first rotating shaft 513 passes through the two hinge arms 512 and the counter-attack plate to realize the hinge between the hinge fork head 510 and the counter-attack plate.

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

[0103] Further, see also Figure 1 The crusher impact plate gap adjustment device also includes a mounting support 1100, which is installed outside the housing. The fixing component 100 is rotatably connected to the mounting support 1100. By setting the mounting support 1100, the fixing component 100 can rotate relative to the housing, thus preventing the adjusting rod 500 from getting stuck.

[0104] Optionally, the mounting bracket 1100 can be fixed to the housing by bolt connection. The bolt connection structure is simple and easy to assemble.

[0105] Optionally, the mounting bracket 1100 can be rotatably connected to the fixing component 100 via a second rotating shaft, which has a simple structure and good rotation smoothness.

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

[0107] Example 2

[0108] This embodiment provides a crusher impact plate gap adjustment device, which is largely the same in structure as Embodiment 1, with improvements only. Therefore, only the differences between the two are described here, and the structures identical to those in Embodiment 1 will not be repeated. In this embodiment, the same or corresponding technical features as in Embodiment 1 are referred to by the same reference numerals.

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

[0110] The mounting cylinder 110 is installed outside the housing. The mounting 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. The bottom plate is provided with a first through hole. The outer peripheral wall of the first cylindrical structure is provided with a second external thread.

[0111] The floating cylinder 160 includes a second cylindrical structure extending axially. The top end of the second cylindrical structure is closed by a top plate, and the bottom end of the second cylindrical structure has an opening. The inner peripheral wall of the second cylindrical structure has an internal thread. The floating cylinder 160 is connected to the mounting cylinder 110 at the location where the second external thread is provided through the internal thread, and together with the mounting cylinder 110, they form a mounting cavity 101. The other end of the elastic element 300 abuts against the top plate of the floating cylinder 160. The top plate of the floating cylinder 160 has a second through hole. One end of the sleeve 200 slides through the second through hole and extends into the first cylindrical structure.

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

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

[0114] The second driving member 190 is disposed on the mounting 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, causing the top plate of the floating cylinder 160 to move closer to or further away from the mounting cylinder 110.

[0115] The fixing component 100 can automatically adjust the preload of the elastic element 300. Compared with manual adjustment, it saves manpower and can be remotely controlled, with high flexibility and timeliness of adjustment.

[0116] To facilitate understanding, the method for adjusting the preload of the elastic element 300 is briefly introduced below:

[0117] Increase the preload of the elastic element 300: Control the second drive element 190 to drive the drive gear 180 to rotate in the first rotation direction. The rotation of the drive gear 180 in the first rotation direction will drive the driven gear 170 to rotate in the second rotation direction. The rotation of the driven gear 170 in the second rotation direction will drive the floating cylinder 160 connected to it to rotate in the second rotation direction. The rotation of the floating cylinder 160 in the second rotation direction will cause its top plate to approach the mounting cylinder 110. After the top plate moves the required distance, control the second drive element 190 to stop.

[0118] Reduce the preload of the elastic element 300: Control the second drive element 190 to drive the drive gear 180 to rotate in the second rotation direction. The rotation of the drive gear 180 in the second rotation direction will drive the driven gear 170 to rotate in the first rotation direction. The rotation of the driven gear 170 in the first rotation direction will drive the floating cylinder 160 connected to it to rotate in the first rotation direction. The rotation of the floating cylinder 160 in the first rotation direction will cause its top plate to move away from the mounting cylinder 110 until the top plate moves the required distance. Then control the second drive element 190 to stop.

[0119] It is worth noting that the first rotation direction is opposite to the second rotation direction. For example, if the first rotation direction is clockwise, then the second rotation direction is counterclockwise.

[0120] The fixing component 100 has a simple structure and is easy to assemble. Furthermore, the method for adjusting the preload of the elastic element 300 is also relatively simple and easy to operate.

[0121] Example 3

[0122] like Figure 8 As shown, this embodiment provides a crusher, including a housing 10, an impact plate 20, a rotor 30, and a crusher impact plate gap adjustment device provided in Embodiment 1 or Embodiment 2. The crusher impact plate gap adjustment device is used to adjust the distance between the impact plate 20 and the rotor 30.

[0123] Because the crusher uses the aforementioned crusher impact plate gap adjustment device, the impact plate 20 and rotor 30 have a longer service life, and the output particle size of the material is more accurate.

[0124] Furthermore, such as Figure 9 and Figure 10 As shown, the above-mentioned crusher impact plate gap adjustment device is provided in two parts, which are respectively located at both ends of the impact plate 20 in the width direction. Furthermore, each impact plate gap adjustment device has a sprocket 1200 sleeved around its adjusting nut 600, and a chain 1300 is wound between the two sprockets 1200. This arrangement allows for synchronous operation of the two impact plate gap adjustment devices through the transmission between the chain 1300 and the sprockets 1200, thereby achieving uniform adjustment of the gap between the impact plate 20 and the rotor 30.

[0125] Alternatively, in the scheme where the third drive component 1000 drives the adjusting nut 600 to rotate, the third drive component 1000 can be installed on only one crusher impact plate gap adjustment device, saving parts.

[0126] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A device for adjusting the gap between impact plates of a crusher, characterized in that, include: A fixing component (100) is installed outside the housing (10) of the crusher, including a mounting cavity (101) and a locking hole communicating with the mounting cavity (101), wherein a first through hole is provided on the bottom wall of the mounting cavity (101); A sleeve (200) is slidably disposed at one end in the mounting cavity (101), and an annular flange (210) is provided on the sleeve (200); An elastic element (300) is sleeved outside the sleeve (200), with one end of the elastic element (300) abutting against the annular flange (210) and the other end abutting against the top wall of the mounting cavity (101); A locking pin (400) is used to extend into the mounting cavity (101) through the locking hole and engage with the annular flange (210) to restrict the sliding of the sleeve (200); An adjusting rod (500) is inserted through the sleeve (200). One end of the adjusting rod (500) passes through the first through hole and the box (10) and is hinged to the counterattack plate (20). The other end of the adjusting rod (500) is provided with a first external thread. An 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. When 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 component (100) is provided with a first driving member (700), the output end of the first driving member (700) is connected to the locking pin (400), and is used to drive the locking pin (400) to slide in the lock hole, so that the locking pin (400) extends into the mounting cavity (101) and engages with the annular flange (210), or so that the locking pin (400) leaves the mounting 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 component (100) includes: The mounting cylinder (110) is installed outside the housing (10). The mounting 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. The bottom plate is provided with a first through hole. The outer peripheral wall of the first cylindrical structure is provided with a connecting edge (111). The connecting edge (111) is provided with a first connecting hole. A pressure plate (120) is adjustablely positioned above the mounting cylinder (110) and forms the mounting cavity (101) with the mounting cylinder (110). The pressure plate (120) has a central hole in the middle. One end of the sleeve (200) slides through the central hole and extends into the first cylindrical structure. The other end of the elastic element (300) abuts against the pressure plate (120). The pressure plate (120) also has a second connecting hole. An adjusting screw (130) passes through the first connecting hole and the second connecting hole; 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 component (100) includes: The mounting cylinder (110) is installed outside the housing (10). The mounting 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. The bottom plate is provided with a first through hole. The outer peripheral wall of the first cylindrical structure is provided with a second external thread. A floating cylinder (160) includes a second cylindrical structure extending axially. The top end of the second cylindrical structure is closed by a top plate, and the bottom end of the second cylindrical structure has an opening. The inner peripheral wall of the second cylindrical structure has an internal thread. The floating cylinder (160) is connected to the mounting cylinder (110) with a second external thread through the internal thread, and together with the mounting cylinder (110), they form the mounting cavity (101). The other end of the elastic element (300) abuts against the top plate of the floating cylinder (160). The top plate of the floating cylinder (160) has a second through hole. One end of the sleeve (200) slides through the second through hole and extends into the first cylindrical structure. The driven gear (170) is sleeved on the outside of the floating cylinder (160) and rotates synchronously with the floating cylinder (160); The driving gear (180) meshes with the driven gear (170); The second driving member (190) is disposed on the mounting 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, causing the top plate of the floating cylinder (160) to move closer to or further away from the mounting cylinder (110).

5. The crusher impact plate gap adjustment device according to claim 1, characterized in that, The bottom wall of the mounting cavity (101) is provided with a guide hole corresponding to the annular flange (210). The guide rod (800) slides through the guide hole. One end of the guide rod (800) extending into the mounting cavity (101) is connected to the annular flange (210). The end of the guide rod (800) located outside the mounting cavity (101) is provided with a limiting head (810). The limiting head (810) can abut against the bottom wall of the mounting 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 cylinder (900). A first bearing (910) is installed inside the connecting cylinder (900). Part of the adjusting nut (600) is interference-fitted with the inner ring of the first bearing (910), and another part of the adjusting nut (600) extends out of the connecting cylinder (900). Alternatively, a second bearing may be installed at the opening at the other end of the sleeve (200), with a portion of the adjusting nut (600) having an interference fit with the inner ring of the second bearing, and the other portion of the adjusting nut (600) extending out of the sleeve (200).

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

8. The crusher impact plate gap adjustment device according to any one of claims 1-6, characterized in that, One end of the adjusting rod (500) is provided with a hinged fork (510), which is hinged to the counterattack plate (20); And / or, the crusher impact plate gap adjustment device further includes a mounting bracket (1100), which is installed outside the housing (10), and the fixing component (100) is rotatably connected to the mounting bracket (1100).

9. A crusher, characterized in that, The invention includes a housing (10), an impact plate (20), a rotor (30), and a crusher impact plate gap adjustment device according to any one of claims 1-8, 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, Two impact plate gap adjustment devices are provided for the crusher. The two impact plate gap adjustment devices are respectively set at both ends of the impact plate (20) in the width direction. Each impact plate gap adjustment device has a sprocket (1200) sleeved on the adjusting nut (600) and a chain (1300) wound between the two sprockets (1200).

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