Cone crusher with bottom spring adjusting mechanism

Abstract

The invention relates to the field of mining mechanical equipment, in particular to a cone crusher with a bottom spring adjusting mechanism, which comprises a bottom rack, an upper rack, an eccentric mechanism arranged on the bottom rack, a main shaft arranged on the eccentric mechanism, and a movable cone fixed on the main shaft above the eccentric mechanism, the fixed cone is arranged in the upper rack; a discharge port is formed between the fixed cone and the movable cone; a bottom spring mechanism is arranged in or connected with the bottom rack, and the upper end of the bottom spring mechanism elastically supports the main shaft through a thrust bearing set. According to the scheme, the main shaft is elastically supported by the bottom spring mechanism, so that the device has the advantages of simple structure, low cost and convenience in maintenance; and the problem of abrasion of a sealing element due to the adoption of a hydraulic cylinder technology is avoided.

Description

Technical Field

[0001] The present invention relates to the field of mining machinery and equipment, and particularly to a cone crusher with a bottom spring adjustment mechanism. Background Art

[0002] Cone crushers are widely used in industries such as construction stone and non-ferrous metal mining. Since the objects to be processed often contain hard material blocks, when these material blocks enter the crushing cavity, it will cause the hard materials to crush the wear-resistant lining of the crushing cavity and the parts of the crusher. For the above problems, the existing solutions mainly include upper frame hydraulic iron passing protection, upper frame spring type iron passing protection, and bottom single cylinder hydraulic adjustment type iron passing protection. For example, the following existing patent solutions:

[0003] Regarding the iron passing protection adjustment of the cone crusher described in the Chinese patent with the publication number CN113042138B, it mainly uses the passive lifting action of multiple hydraulic cylinders arranged circumferentially between the upper frame and the lower frame to discharge iron blocks.

[0004] Regarding the iron passing protection adjustment of the cone crusher described in the Chinese patent with the publication number CN211449286U, it realizes iron passing protection by using distributed springs on the upper frame.

[0005] Both of the above two types of iron passing protection install the iron passing protection mechanism on the upper frame. When hard materials enter the crushing cavity or there is material accumulation in the crushing cavity, the fixed cone of the crusher is forced to lift upward, compressing the spring or multiple cylinders, thereby increasing the distance between the moving cone and the fixed cone, enlarging the discharge opening, and discharging the accumulated material or iron passing immediately to protect the crusher from damage. After that, the fixed cone returns to its original position by the elastic force or hydraulic pressure of the spring. The above-structured cone crusher has the disadvantages of slow iron passing reaction, low efficiency, and easy damage to the upper frame and the moving cone group structure.

[0006] Another example is the cone crusher described in the Chinese patent with the publication number CN113042138B. Regarding the iron passing protection adjustment, it adopts a bottom single cylinder hydraulic adjustment type iron passing protection structure, which is applicable to the existing single cylinder cone crusher. This type of bottom single cylinder hydraulic adjustment type iron passing protection structure has higher usage costs, maintenance costs, and higher maintenance process requirements on the one hand, and on the other hand, there are problems with seal wear in the hydraulic cylinder technology. Due to its high usage and maintenance costs, it is particularly not suitable for countries or regions with weak industrial bases. Summary of the Invention

[0007] To solve the above problems, the object of the present invention is to provide a cone crusher with a bottom spring adjustment mechanism. This solution replaces the bottom single-cylinder hydraulic adjustment type iron-passing protection solution with a spring assembly, which has the advantages of simple structure, low cost and convenient maintenance; and avoids the problem of seal wear caused by the use of hydraulic cylinder technology.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] A cone crusher with a bottom spring adjustment mechanism, comprising a bottom frame, an upper frame, an eccentric mechanism arranged on the bottom frame, a main shaft arranged on the eccentric mechanism, a moving cone fixed on the main shaft above the eccentric mechanism, and a fixed cone arranged in the upper frame; a discharge port is formed between the fixed cone and the moving cone; characterized in that: a bottom spring mechanism is built in or connected to the bottom frame, and the upper end of the bottom spring mechanism elastically supports the main shaft through a thrust bearing group.

[0010] The present invention adopts the above technical solution, which relates to a cone crusher with a bottom spring adjustment mechanism. The lower end of the main shaft in the cone crusher is arranged in the eccentric mechanism, and the moving cone is fixed on the main shaft above the eccentric mechanism. When the eccentric sleeve rotates, it drives the main shaft and the moving cone thereon to swing circumferentially. A discharge port is formed between the fixed cone and the moving cone, and the lower end of the main shaft is supported on the bottom spring mechanism through a thrust bearing group. After an iron block falls into the crushing chamber of the cone crusher, when the iron block exceeds the size of the discharge port, the overall force on the moving cone suddenly increases, and the whole moving cone moves downward to squeeze the spring assembly of the iron-passing protection mechanism to discharge the iron block through the discharge port to achieve iron-passing protection; after the iron-passing action is completed, the spring assembly drives the movable base and the moving cone supported thereon to reset.

[0011] The above bottom spring mechanism uses elastic support for the main shaft, which has the advantages of simple structure, low cost and convenient maintenance; and avoids the problem of seal wear caused by the use of hydraulic cylinder technology.

[0012] In a specific implementation, the bottom spring mechanism includes a sleeve for fixedly connecting to the bottom frame, a spring assembly arranged inside the sleeve, and a movable base arranged above the spring assembly; the upper end of the spring assembly elastically supports the movable base, and a sliding table for supporting the thrust bearing group is constructed on the upper end surface of the movable base; the upper end opening of the sleeve is fixedly connected to the bottom frame, and the lower end of the main shaft is supported on the sliding table through a thrust bearing group.

[0013] Since this bottom spring adjustment mechanism is installed on the bottom frame, it replaces the upper frame hydraulic iron protection scheme, the upper frame spring iron protection scheme, and the bottom single-cylinder hydraulic adjustment iron protection scheme described in the background technology solution. Specifically, a spring assembly is built into the sleeve of this mechanism. The spring assembly elastically supports the upper movable base, and the sliding table of the movable base is used to support the main shaft on which the moving cone is installed through a thrust bearing group. Based on the above scheme, the sleeve can guide the lifting of the movable base, and the spring assembly can elastically support the movable base. After the iron ore is fed into the cone crusher, the iron ore falls into the discharge port, and the whole moving cone descends to squeeze the spring assembly to achieve iron passing; after the iron passing is completed, the spring assembly drives the movable base and the moving cone it supports to reset.

[0014] In one implementation, there is exactly one set of the spring assembly. This spring assembly is arranged at the center of the sleeve and supports the center of the lower end face of the movable base. In this solution, a large spring assembly is arranged at the center of the sleeve to achieve elastic iron passing protection.

[0015] In another implementation, multiple sets of spring assemblies are connected in parallel, that is, multiple sets of spring assemblies are arranged in a circumferential ring along the center of the sleeve, and the upper ends of the multiple sets of spring assemblies elastically support the movable base. The multiple sets of spring assemblies provide stable elastic support for the movable base and have a higher safety redundancy. For example, when one set of spring assemblies has a structural strength defect, the other spring assemblies can ensure that the moving cone assembly does not fall off.

[0016] Preferably, the bottom frame includes a longitudinally extending cylindrical portion extending downward, and an annular plate above the longitudinally extending portion. A central hole is formed in the annular plate; the upper end opening of the sleeve is fixedly connected to the longitudinally extending cylindrical portion, and the top of the sliding table passes through the central hole and is inside the longitudinally extending cylindrical portion of the bottom frame. In this solution, the longitudinally extending cylindrical portion and the upper end opening of the sleeve are butted to form the moving area of the movable base, and the top of the sliding table passing through the central hole and being inside the bottom frame can be used to support the thrust bearing group inside the bottom frame.

[0017] In a specific implementation, the movable base is slidably arranged inside the sleeve or on the longitudinally extending cylindrical portion of the bottom frame docked with the sleeve.

[0018] Preferably, the spring assembly includes a spring guide rod and a compression spring sleeved on the spring guide rod; the lower end of the spring guide rod is directly or indirectly fixedly connected to the sleeve, and the upper end of the spring guide rod passes through the upper guide rod hole of the movable base. In this solution, the deformation direction of the compression spring is guided and regulated by the spring guide rod.

[0019] Preferably, a frame guide hole corresponding to the upper guide rod hole is formed on the annular plate; the upper end of the spring guide rod passes through the upper guide rod hole and the frame guide hole. In this way, the upper part of the spring guide rod is positioned by the bottom frame, thus ensuring the positioning stability of the spring guide rod.

[0020] Preferably, a fixed base is arranged inside the sleeve, and the lower end of the spring guide rod passes through the lower guide rod hole of the fixed base and at least partially extends into the space below the fixed base through the lower guide rod hole. In a specific solution, a space is left between the fixed base and the bottom of the sleeve, and the lower end of the spring guide rod passes through the lower guide rod hole and extends into the space. In this way, the lower end of the spring guide rod extends a longer distance into the lower guide rod hole, which can ensure the stability of the penetration and positioning.

[0021] Preferably, the sliding table protrudes upward from the center of the upper end surface of the movable base. A plurality of upper guide rod holes are arranged on the movable base on the circumferential outer side of the sliding table. The upper end of the spring guide rod passes through the upper guide rod hole. An upper spring seat is arranged on the movable base below the upper guide rod hole, and the upper end of the compression spring is positioned in the upper spring seat. In this solution, the upper guide rod hole is arranged to avoid the sliding table, and the spring guide rod passes through the upper guide rod hole, so that the movable base can be lifted and lowered.

[0022] In a further solution, the spring guide rod is constructed as a screw rod. Nuts are arranged on the upper end passing through the frame guide hole and the lower end passing through the lower guide rod hole of the spring guide rod. By screwing the upper or lower nut, the distance between the movable base and the fixed base can be adjusted, and further the tightness of the compression spring can be adjusted. In this solution, the equipment can adjust the tightness of the spring according to different parameters such as the hardness of the material and the crushing specification, so as to achieve the pressure required for material crushing.

[0023] In one of the implementation schemes, the upper frame can be lifted relative to the bottom frame based on the discharge port adjusting mechanism to adjust the caliber of the discharge port between the fixed cone and the movable cone. In a specific solution, the upper frame is threadedly connected to the upper end of the bottom frame, and the discharge port adjusting mechanism is arranged on the upper frame or the bottom frame and is used to drive the upper frame to rotate and lift relative to the bottom frame. In this solution, the height of the upper frame is adjusted in a spiral manner, and then the caliber of the discharge port is adjusted.

[0024] The above-mentioned discharge port adjusting mechanism can adopt the relevant structure described in the invention patent with the publication number of "CN104588155B", such as sleeving a large gear ring on the upper frame and arranging a driving motor or a rotary hydraulic cylinder for driving the large gear ring to rotate on the bottom frame.

[0025] In a further solution, a locking component is also provided on the upper frame or the bottom frame for locking the upper frame on the bottom frame. The locking component in this solution can be a locking screw. After adjusting the height of the upper frame relative to the bottom frame, the locking component is used for locking, so as to prevent the upper frame and the bottom frame of the cone crusher from shaking and displacing during use.

[0026] In another alternative implementation, a fixed cone adjusting bracket is also provided inside the upper frame in this solution. Specifically, the upper frame is fixed above the bottom frame, and a fixed cone adjusting bracket is arranged inside the upper frame; the fixed cone adjusting bracket rises and falls relative to the upper frame based on the discharge port adjusting mechanism to adjust the discharge port diameter between the fixed cone and the moving cone. In this solution, the upper frame is fixedly arranged, and the internal fixed cone adjusting bracket is longitudinally lifted and lowered to adjust the discharge port diameter.

[0027] In a further solution, the fixed cone adjusting bracket is threadedly connected inside the upper frame, and the discharge port adjusting mechanism is arranged on the upper frame or the fixed cone adjusting bracket for driving the fixed cone adjusting bracket to rotate and rise and fall relative to the upper frame. Similarly, the above-mentioned discharge port adjusting mechanism can adopt the relevant structure described in the invention patent with the publication number of "CN104588155B", such as a large gear ring is sleeved on the fixed cone adjusting bracket, and a driving motor or a rotary hydraulic cylinder for driving the large gear ring to rotate is arranged on the upper frame.

[0028] Preferably, a locking component is also provided on the upper frame or the fixed cone adjusting bracket for locking the fixed cone adjusting bracket on the upper frame. The locking component in this solution can be a locking screw. After adjusting the height of the fixed cone adjusting bracket relative to the upper frame, the locking component is used for locking, so as to prevent the fixed cone adjusting bracket and the upper frame of the cone crusher from shaking and displacing during use.

[0029] In a further implementation, the upper end of the main shaft swings and is positioned in the main shaft top seat inside the upper frame or the fixed cone adjusting bracket. In this solution, the upper end of the main shaft is supported by the main shaft top seat. During the swinging process of the main shaft, the upper end of the main shaft is supported inside the main shaft top seat, thereby improving the stability during the swinging process of the main shaft.

[0030] In summary, the cone crusher adopting the above bottom spring adjustment mechanism has the following advantages:

[0031] (1) The iron passing protection in this solution is realized by the bottom spring. When there is relatively hard material in the crushing cavity, the moving cone is stressed and transmits the force to the spring through the main shaft, and the spring deforms due to compression to achieve the "iron passing" protection.

[0032] (2) In this solution, the iron - passing protection adopts spring expansion and contraction to realize the lifting of the moving cone during "iron - passing", avoiding the problem of seal wear existing in the use of hydraulic cylinder technology.

[0033] (3) By combining the iron - passing protection of the bottom spring in the technology of the present invention with the discharge port adjusting mechanism arranged on the upper frame of the cone crusher, the adjustment of the material discharge port size and the iron - passing protection function are realized.

[0034] (4) The bottom spring - type iron - passing protection can flexibly realize various combined forms of the cone crusher structure, increasing the diversity and practicality of the product.

[0035] (5) Since the spring is convenient to replace and the manufacturing process is relatively simple, the maintenance performance of the cone crusher is improved. Description of the Drawings

[0036] Figure 1 It is a schematic structural diagram of the bottom spring - adjusting mechanism described in Embodiment 1.

[0037] Figure 2 It is Figure 1 the A - A cross - sectional view of

[0038] Figure 3 the radial cross - sectional view of the movable base.

[0039] Figure 4 the radial cross - sectional view of the fixed base.

[0040] Figure 5 It is the first schematic structural diagram of the cone crusher.

[0041] Figure 6 It is the second schematic structural diagram of the cone crusher. Detailed Embodiment

[0042] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0043] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It 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 therefore should not be construed as a limitation to the present invention.

[0044] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more, unless otherwise clearly defined.

[0045] In the present invention, unless otherwise clearly specified and defined, the terms such as "mounted", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may 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 circumstances.

[0046] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0047] As Figure 5 and 6 shown, the present embodiment relates to a cone crusher with a bottom spring adjustment mechanism, which includes a bottom frame 1, an upper frame 5, an eccentric mechanism 6 arranged on the bottom frame 1, a main shaft 4 arranged on the eccentric mechanism 6, a moving cone 7 fixed on the main shaft 4 above the eccentric mechanism 6, and a fixed cone 8 arranged inside the upper frame 5. A discharge port 10 is formed between the fixed cone 8 and the moving cone 7.

[0048] Compared with the prior art solutions, the features of this solution are as follows: A bottom spring mechanism is built-in or connected to the bottom frame 1, and the upper end of the bottom spring mechanism elastically supports the main shaft 4 through a thrust bearing group 3. The lower end of the main shaft in this cone crusher is arranged inside an eccentric mechanism, and a moving cone is fixed on the main shaft above the eccentric mechanism. When the eccentric sleeve rotates, it drives the main shaft and the moving cone on it to swing circumferentially. A discharge port is formed between the fixed cone and the moving cone, and the lower end of the main shaft is supported on the bottom spring mechanism through a thrust bearing group. After an iron block is fed into the cone crusher, when the iron block exceeds the size of the discharge port and cannot be broken, the overall force on the moving cone suddenly increases, and the whole moving cone moves downward to squeeze the spring assembly of the iron passing protection mechanism, causing the iron block to be discharged through the discharge port to achieve iron passing protection. After the iron passing action is completed, the spring assembly drives the movable base and the moving cone supported by it to reset. The above-mentioned bottom spring mechanism elastically supports the main shaft, has the advantages of simple structure, low cost and convenient maintenance, and avoids the problem of seal wear caused by the use of hydraulic cylinder technology.

[0049] In the specific implementation shown in Figures 1 to 4 the bottom spring mechanism includes a sleeve 21 for fixedly connecting to the bottom frame 1, a spring assembly arranged inside the sleeve 21, and a movable base 22 arranged above the spring assembly. The upper end of the spring assembly elastically supports the movable base 22, and a sliding table 221 for supporting the thrust bearing group 3 is constructed on the upper end surface of the movable base 22. The upper end opening of the sleeve 21 is fixedly connected to the bottom frame 1, and the lower end of the main shaft 4 is supported on the sliding table 221 through the thrust bearing group 3. Since this bottom spring adjustment mechanism is installed on the bottom frame, it replaces the upper frame hydraulic iron passing protection solution, the upper frame spring iron passing protection solution, and the bottom single-cylinder hydraulic adjustment iron passing protection solution recorded in the background art solution. Specifically, a spring assembly is built-in the sleeve of this mechanism, and the spring assembly elastically supports the movable base above, and the sliding table of the movable base is used to support the main shaft on which the moving cone is installed through a thrust bearing group. Based on the above solution, the sleeve can guide the lifting of the movable base, and the spring assembly can elastically support the movable base. After an iron block is fed into the cone crusher, the iron block falls into the discharge port, and the whole moving cone moves downward to squeeze the spring assembly to achieve iron passing. After the iron passing is completed, the spring assembly drives the movable base and the moving cone supported by it to reset.

[0050] As shown in Figure 5 and 6As shown, the bottom frame 1 includes a longitudinally extending cylindrical portion 11 extending downward, and an annular plate 12 above the longitudinally extending portion. A central hole is formed in the annular plate 12. The upper end opening of the sleeve 21 is fixedly connected to the longitudinally extending cylindrical portion 11, and the top of the sliding table 221 passes through the central hole and is located inside the longitudinally extending cylindrical portion 11 of the bottom frame. In this solution, the butt joint of the longitudinally extending cylindrical portion and the upper end opening of the sleeve forms the moving area of the moving base, and the top of the sliding table passing through the central hole and being located inside the bottom frame can be used to support the thrust bearing group inside the bottom frame. The moving base 22 is slidably arranged inside the sleeve 21 or on the longitudinally extending cylindrical portion 11 of the bottom frame docked with the sleeve 21.

[0051] In one implementation, there is exactly one set of the spring assembly, and this spring assembly is arranged at the center of the sleeve 21 and supports the center of the lower end face of the moving base 22. In this solution, a large spring assembly is arranged at the center of the sleeve to achieve elastic protection against passing of iron.

[0052] In Figure 1 In another implementation shown, multiple sets of spring assemblies are connected in parallel, that is, multiple sets of spring assemblies are arranged in a circumferential ring along the center of the sleeve 21, and the upper ends of the multiple sets of spring assemblies elastically support the moving base 22. The multiple sets of spring assemblies provide stable elastic support for the moving base and have a higher safety redundancy. For example, when one set of spring assemblies has a structural strength defect, the other spring assemblies can ensure that the moving cone assembly does not fall off.

[0053] As Figure 1 shown, the spring assembly includes a spring guide rod 231 and a compression spring 232 sleeved on the spring guide rod 231. The lower end of the spring guide rod 231 is directly or indirectly fixedly connected to the sleeve 21, and the upper end of the spring guide rod 231 passes through the upper guide rod hole 222 of the moving base 22. In this solution, the deformation direction of the compression spring is guided and regulated by the spring guide rod. A frame guide hole corresponding to the upper guide rod hole 222 is constructed on the annular plate 12 in the bottom frame 1, and the upper end of the spring guide rod 231 passes through the upper guide rod hole 222 and the frame guide hole. In this way, the upper part of the spring guide rod is positioned by the bottom frame, so as to ensure the positioning stability of the spring guide rod.

[0054] As Figure 1 shown, a fixed base 24 is arranged inside the sleeve 21, and the lower end of the spring guide rod 231 passes through the lower guide rod hole 241 of the fixed base 24 and at least partially extends into the space below the fixed base 24. In a specific solution, a space is left between the fixed base and the bottom of the sleeve, and the lower end of the spring guide rod passes through the lower guide rod hole and extends into the space. In this way, the distance that the lower end of the spring guide rod extends into the lower guide rod hole is relatively long, which can ensure the stability of the penetration positioning. As Figure 1 and 3As shown, the sliding table 221 is protruding upward and arranged at the center of the upper end surface of the movable base 22. A plurality of upper guide rod holes 222 are arranged on the movable base 22 on the outer side of the sliding table 221. The upper end of the spring guide rod 231 is inserted into the upper guide rod hole 222. An upper spring seat 223 is arranged on the movable base 22 below the upper guide rod hole 222. The upper end of the compression spring 232 is positioned in the upper spring seat 223. In this scheme, the upper guide rod hole is arranged away from the sliding table, and the spring guide rod passes through the upper guide rod hole so as to allow the movable base to rise and fall.

[0055] When installing the above-mentioned bottom spring adjustment mechanism, first install the fixed base 24 to the appropriate position at the bottom of the sleeve 21, then install the spring guide rod 231 on the five lower guide rod holes 241 of the fixed base 24, then install the compression spring 232 on the lower spring seat 242 of the fixed base 24, and finally align the upper guide rod hole 222 on the movable base 22 with the spring guide rod 231, align the upper spring seat 223 with the compression spring 232, and install and tighten the bottom spring adjustment mechanism; then install the bottom spring adjustment mechanism on the bottom frame 1, and the longitudinal extension cylinder of the bottom frame 1 is connected with the upper end opening of the sleeve 21, such as by welding or flange connection, and the spring guide rod 231 passes through the frame guide hole. In this way, the upper part of the spring guide rod is positioned by the bottom frame, thereby ensuring the positioning stability of the spring guide rod. In a further preferred solution, the spring guide rod 231 is constructed as a screw rod, and nuts are provided on the upper end of the spring guide rod 231 passing through the frame guide hole and the lower end passing through the lower guide rod hole 241. Twisting the upper or lower nut can adjust the distance between the movable base 22 and the fixed base 24, thereby adjusting the tightness of the compression spring 232. In this solution, the equipment can adjust the tightness of the spring according to the hardness and softness of different materials, crushing specifications and other parameter requirements to achieve the pressure required for material crushing.

[0056] In such Figure 5 As shown, in one embodiment, the upper frame 5 can be raised and lowered relative to the bottom frame 1 based on the discharge port adjustment mechanism to adjust the caliber of the discharge port 10 between the fixed cone 8 and the moving cone 7. In a specific scheme, the upper frame 5 is threadedly connected to the upper end of the bottom frame 1, and the discharge port adjustment mechanism is arranged on the upper frame 5 or the bottom frame 1, and is used to drive the upper frame 5 to rotate and rise and fall relative to the bottom frame 1. The scheme here adjusts the height of the upper frame by a spiral manner, thereby adjusting the caliber of the discharge port 10. The above-mentioned discharge port adjustment mechanism can adopt the relevant structure recorded in the invention patent with the announcement number "CN104588155B", such as a large gear ring is sleeved on the upper frame 5, and a driving motor or a rotary hydraulic cylinder that drives the large gear ring to rotate is arranged on the bottom frame 1.

[0057] In a further embodiment, a locking member 56 for locking the upper frame 5 to the bottom frame 1 is further provided on the upper frame 5 or the bottom frame 1. The locking member 56 in this embodiment may be a locking screw. After adjusting the height of the upper frame 5 relative to the bottom frame 1, the locking member 56 is used for locking, so as to prevent the upper frame 5 and the bottom frame 1 from shaking and displacing during the use of the cone crusher.

[0058] In another alternative embodiment as Figure 6 shown, a fixed cone adjusting bracket 51 is further provided inside the upper frame 5. Specifically, the upper frame 5 is fixed above the bottom frame 1, and a fixed cone adjusting bracket 51 is arranged inside the upper frame 5. The fixed cone adjusting bracket 51 moves up and down relative to the upper frame 5 based on the discharge port adjusting mechanism to adjust the caliber of the discharge port 10 between the fixed cone 8 and the moving cone 7. In this embodiment, the upper frame 5 is fixedly arranged, and the caliber of the discharge port 10 is adjusted by vertically moving the internal fixed cone adjusting bracket 51. In a further embodiment, the fixed cone adjusting bracket 51 is threadedly connected inside the upper frame 5, and the discharge port adjusting mechanism is arranged on the upper frame 5 or the fixed cone adjusting bracket 51 to drive the fixed cone adjusting bracket 51 to rotate and move up and down relative to the upper frame 5. Similarly, the above discharge port adjusting mechanism can adopt the relevant structure described in the invention patent with the publication number of "CN104588155B", such as a large gear ring is sleeved on the fixed cone adjusting bracket 51, and a driving motor or a rotating hydraulic cylinder for driving the large gear ring to rotate is arranged on the upper frame 5.

[0059] Preferably, a locking member 56 for locking the fixed cone adjusting bracket 51 to the upper frame 5 is further provided on the upper frame 5 or the fixed cone adjusting bracket 51. The locking member 56 in this embodiment may be a locking screw. After adjusting the height of the fixed cone adjusting bracket 51 relative to the upper frame 5, the locking member 56 is used for locking, so as to prevent the fixed cone adjusting bracket 51 and the upper frame 5 from shaking and displacing during the use of the cone crusher.

[0060] In the above two embodiments, the upper end of the main shaft 4 swings and is positioned in the main shaft top seat inside the upper frame 5 or the fixed cone adjusting bracket 51. In this embodiment, the upper end of the main shaft 4 is supported by the main shaft top seat. During the swinging process of the main shaft, the upper end of the main shaft is supported inside the main shaft top seat, thereby improving the stability during the swinging process of the main shaft.

[0061] In summary, the cone crusher adopting the above bottom spring adjusting mechanism has the following advantages:

[0062] (1) The iron passing protection in this embodiment is realized by the bottom spring. When there is relatively hard material in the crushing cavity, the moving cone main shaft is stressed, and the main shaft transmits the force to the spring, and the spring deforms due to compression to achieve the "iron passing" protection.

[0063] (2) In this solution, the iron passing protection uses the spring expansion and contraction to realize the lifting of the moving cone when "passing iron", avoiding the problem of seal wear caused by the use of hydraulic cylinder technology.

[0064] (3) The cone crusher using the technology of the present invention combines the bottom spring iron passing protection with the discharge port adjustment mechanism provided on the upper frame to realize the functions of material adjustment and iron passing protection.

[0065] (4) The bottom spring type iron passing protection can flexibly realize the structural forms of cone crushers in various combination forms, increasing the diversity and practicality of the products.

[0066] (5) Since the spring is convenient to replace and the manufacturing process is relatively simple, the maintenance performance of the cone crusher is improved.

[0067] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0068] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and purposes of the present invention.

Claims

1. A cone crusher with a bottom spring adjustment mechanism, comprising a bottom frame (1), an upper frame (5), an eccentric mechanism (6) provided on the bottom frame (1), a main shaft (4) provided on the eccentric mechanism (6), a moving cone (7) fixed on the main shaft (4) above the eccentric mechanism (6), and a fixed cone (8) provided in the upper frame (5); a discharge opening (10) is formed between the fixed cone (8) and the moving cone (7); characterized in that: The bottom frame (1) is internally provided with or connected to a bottom spring mechanism, and the upper end of the bottom spring mechanism elastically supports the main shaft (4) through a thrust bearing group (3).

2. The cone crusher with a bottom spring adjustment mechanism according to claim 1, characterized in that: The bottom spring mechanism includes a sleeve (21) for fixedly connecting to the bottom frame (1), a spring assembly disposed inside the sleeve (21), and a movable base (22) disposed above the spring assembly; the upper end of the spring assembly elastically supports the movable base (22), and a sliding table (221) for supporting the thrust bearing group (3) is constructed on the upper end surface of the movable base (22); the upper end opening of the sleeve (21) is fixedly connected to the bottom frame (1), and the lower end of the main shaft (4) is supported on the sliding table (221) through the thrust bearing group (3).

3. The cone crusher with a bottom spring adjustment mechanism according to claim 2, wherein: There is only one set of the spring assembly, and this spring assembly is disposed at the center of the sleeve (21) and supports the center of the lower end surface of the movable base (22); or there are multiple sets of spring assemblies in parallel, that is, multiple sets of spring assemblies are arranged in a circumferential ring along the center of the sleeve (21), and the upper ends of the multiple sets of spring assemblies elastically support the movable base (22).

4. The cone crusher with a bottom spring adjustment mechanism according to claim 2, characterized in that: The bottom frame (1) includes a longitudinally extending cylindrical portion (11) extending downward, and an annular plate (12) located above the longitudinally extending portion, and a central hole is formed in the annular plate (12); the upper end opening of the sleeve (21) is fixedly connected to the longitudinally extending cylindrical portion (11), and the top of the sliding table (221) passes through the central hole and is inside the longitudinally extending cylindrical portion (11) of the bottom frame.

5. The cone crusher with a bottom spring adjustment mechanism according to claim 4, characterized in that: The movable base (22) is slidably disposed in the sleeve (21) or on the longitudinally extending cylindrical portion (11) of the bottom frame docked with the sleeve (21).

6. The cone crusher with a bottom spring adjustment mechanism according to claim 3, wherein: The spring assembly includes a spring guide rod (231) and a compression spring (232) sleeved on the spring guide rod (231); the lower end portion of the spring guide rod (231) is directly or indirectly fixedly connected to the sleeve (21), and the upper end portion of the spring guide rod (231) passes through the upper guide rod hole (222) of the movable base (22).

7. The cone crusher with a bottom spring adjustment mechanism according to claim 6, characterized in that: A frame guide hole corresponding to the upper guide rod hole (222) is constructed on the annular plate (12); the upper end portion of the spring guide rod (231) passes through the upper guide rod hole (222) and the frame guide hole.

8. The cone crusher with a bottom spring adjustment mechanism according to claim 7, characterized in that: A fixed base (24) is disposed inside the sleeve (21), and the lower end portion of the spring guide rod (231) passes through the lower guide rod hole (241) of the fixed base (24) and at least partially extends into the space below the fixed base (24).

9. The cone crusher with a bottom spring adjustment mechanism according to claim 6, wherein: The sliding table (221) protrudes upward at the center of the upper end surface of the movable base (22), and a plurality of upper guide rod holes (222) are arranged on the movable base (22) on the circumferential outer side of the sliding table (221), the upper end portion of the spring guide rod (231) passes through the upper guide rod holes (222), and an upper spring seat (223) is disposed on the movable base (22) below the upper guide rod holes (222), and the upper end of the compression spring (232) is positioned inside the upper spring seat (223).

10. The cone crusher with a bottom spring adjustment mechanism according to claim 8, characterized in that: The spring guide rod (231) is constructed as a screw rod. Nuts are provided at both the upper end portion passing through the frame guide hole and the lower end portion passing through the lower guide rod hole (241) of the spring guide rod (231). By turning the nut on the upper side or the lower side, the distance between the movable base (22) and the fixed base (24) can be adjusted, thereby adjusting the tightness of the compression spring (232).

11. The cone crusher with a bottom spring adjustment mechanism according to claim 1, characterized in that: The upper frame (5) can be lifted and lowered relative to the bottom frame (1) based on the discharge port adjusting mechanism to adjust the diameter of the discharge port (10) between the fixed cone (8) and the movable cone (7).

12. The cone crusher with a bottom spring adjustment mechanism according to claim 11, characterized in that: The upper frame (5) is threadedly connected to the upper end of the bottom frame (1). The discharge port adjusting mechanism is arranged on the upper frame (5) or the bottom frame (1) and is used to drive the upper frame (5) to rotate and lift relative to the bottom frame (1).

13. The cone crusher with a bottom spring adjustment mechanism according to claim 11 or 12, characterized in that: A locking member (56) for locking the upper frame (5) to the bottom frame (1) is further provided on the upper frame (5) or the bottom frame (1).

14. The cone crusher with a bottom spring adjustment mechanism according to claim 1, characterized in that: The upper frame (5) is fixed above the bottom frame (1). A fixed cone adjusting bracket (51) is arranged inside the upper frame (5). The fixed cone adjusting bracket (51) can be lifted and lowered relative to the upper frame (5) based on the discharge port adjusting mechanism to adjust the diameter of the discharge port (10) between the fixed cone (8) and the movable cone (7).

15. The cone crusher with a bottom spring adjustment mechanism according to claim 14, characterized in that: The fixed cone adjusting bracket (51) is threadedly connected inside the upper frame (5). The discharge port adjusting mechanism is arranged on the upper frame (5) or the fixed cone adjusting bracket (51) and is used to drive the fixed cone adjusting bracket (51) to rotate and lift relative to the upper frame (5).

16. The cone crusher with a bottom spring adjustment mechanism according to claim 14 or 15, characterized in that: A locking member (56) for locking the fixed cone adjusting bracket (51) to the upper frame (5) is further provided on the upper frame (5) or the fixed cone adjusting bracket (51).

17. The cone crusher with a bottom spring adjustment mechanism according to claim 11 or 14, characterized in that: The upper end of the main shaft (4) is swingingly positioned in the main shaft top seat inside the upper frame (5) or the fixed cone adjusting bracket (51).

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