A movable cone fastening structure for a single-cylinder cone crusher and a dismounting method

Abstract

The application discloses a dynamic cone fastening structure and dismounting method for a single-cylinder cone crusher, wherein a main shaft is inserted into a central hole of a dynamic cone until the dynamic cone is in contact with a conical surface of the main shaft; a radial fastening component is inserted into a conical hole of the dynamic cone and then extended into a radial groove of the main shaft, so that the dynamic cone is positioned; the radial fastening component is in clearance fit with the conical hole; an upper fastening plate is fixed on an upper surface of the dynamic cone through at least one axial fastener after being inserted into the main shaft, the upper fastening plate is also connected with an upper stepped surface of the main shaft through at least one axial thrust component, and a gap is left between the upper fastening plate and the upper stepped surface of the main shaft, which is used for tensioning the dynamic cone downward through the axial thrust component; a tensioning component is arranged at a joint of a lower stepped surface of the main shaft and a lower surface of the dynamic cone, and is used for tensioning the dynamic cone upward. The mechanical dismounting structure is designed, the dynamic cone is mechanically dismounted without relying on external equipment, the convenience of on-site maintenance is increased, and the dismounting efficiency is improved.

Description

Technical Field

[0001] This invention relates to a moving cone fastening structure for a single-cylinder cone crusher, belonging to the technical field of single-cylinder cone crushers. Background Technology

[0002] Single-cylinder cone crushers are essential equipment for crushing stone and are widely used in metal mines, sand and gravel aggregates, and other fields. The crushing process is mainly driven by a motor and belt to rotate a horizontal shaft, which in turn drives an eccentric sleeve through gear meshing, thereby driving the rotation and oscillation of the main shaft and the moving cone to achieve the crushing function. Among them, the moving cone assembly is the main crushing component. Because the moving cone and the main shaft have an interference fit on the conical surface, its assembly, replacement, and maintenance are very complicated.

[0003] Problems with existing technology: When assembling the moving cone, the moving cone's interior and the spindle's exterior have tapered mating surfaces with an interference fit. This generally requires heating the moving cone or freezing the spindle, placing high demands on the equipment and assembly process, and freezing the spindle takes even longer. When replacing the spindle or moving cone, due to the interference fit, the moving cone is difficult to remove completely from the spindle, and its uneven profile and thick wall make on-site disassembly by heating the moving cone impossible. One existing method involves cutting a groove from the outside in on the moving cone to break the mating surface before removing it, but care must be taken not to damage the spindle surface. Another method involves machining the spindle and moving cone as a whole, machining a hole inside the spindle, and then removing the moving cone. Both methods are destructive removal methods, which can easily damage other components, making them cumbersome and inefficient.

[0004] The above technical problems arise because the only solution is the interference fit between the moving cone and the spindle's tapered surface, without a mechanical disassembly and assembly structure. Summary of the Invention

[0005] To address the above problems, this invention provides a moving cone fastening structure and disassembly method for a single-cylinder cone crusher. By designing a mechanical disassembly structure, the moving cone can be mechanically disassembled and assembled without relying on external equipment, increasing the convenience of on-site maintenance and improving disassembly and assembly efficiency.

[0006] This invention is implemented according to the following technical solution: In a first aspect, the present invention provides a moving cone fastening structure for a single-cylinder cone crusher, comprising: The main shaft and the moving cone are inserted into the center hole of the moving cone until the moving cone contacts the conical surface of the main shaft. At least one radial fastening component extends from the conical hole of the moving cone into the radial groove of the spindle to position the moving cone; the radial fastening component is clearance-fitted with the conical hole, allowing the moving cone to move axially. The upper fastening plate passes through the main shaft and is fixed to the upper surface of the moving cone by at least one axial fastener. The upper fastening plate is also connected to the upper step surface of the main shaft by at least one axial thrust member, and a gap is left between the upper fastening plate and the upper step surface of the main shaft for tensioning the moving cone downward by the axial thrust member. The tensioning component is located at the junction of the lower step of the spindle and the lower surface of the moving cone, and is used to tension the moving cone upward.

[0007] In some embodiments, the tensioning component includes: The inner fastening sleeve has a cylindrical inner surface and is used to fit onto the main shaft until it contacts the lower step surface of the main shaft. An outer fastening sleeve is fitted onto the inner fastening sleeve. The outer surface of the outer fastening sleeve is cylindrical and is used to contact the inner circumferential surface of the moving cone. Both the inner surface of the outer fastening sleeve and the outer surface of the inner fastening sleeve are conical surfaces. At least one axial thrust member is provided for connecting the outer fastening sleeve and the bottom surface of the moving cone, and a gap is left between the outer fastening sleeve and the bottom surface of the moving cone for tensioning the moving cone upward through the axial thrust member.

[0008] In some embodiments, the outer fastening sleeve is provided with a ring of countersunk holes arranged at intervals and extending axially, and the bottom surface of the moving cone is provided with a plurality of threaded holes corresponding one-to-one with the countersunk holes; the axial thrust member is a fastening bolt, which is inserted into the countersunk holes and then tightened in the threaded holes. By continuously tightening the fastening bolt inward, the fastening bolt converts the circumferential rotation into axial movement, thereby pushing the outer fastening sleeve to move axially upward.

[0009] In some embodiments, the outer fastening sleeve is provided with a ring of spaced-apart and axially extending set screw holes; the disassembly bolt is screwed into the set screw holes until the top end contacts the bottom surface of the moving cone, and the disassembly bolt is continuously rotated, the disassembly bolt converts the circumferential rotation into axial movement, thereby driving the outer fastening sleeve to move axially downward.

[0010] In some embodiments, at least one wedge-shaped groove is provided at the outer edge of the upper surface of the inner fastening sleeve. The wedge-shaped groove is a blind hole structure. A wedge is inserted into the wedge-shaped groove, and the inner fastening sleeve is removed from the spindle by striking the wedge.

[0011] In some embodiments, both the inner and outer fastening sleeves are provided with slits for changing their own inner diameter.

[0012] In some embodiments, the upper fastening plate is provided with an inner ring of countersunk holes arranged at intervals and extending axially, and an outer ring of countersunk holes arranged at intervals and extending axially; the upper surface of the moving cone is provided with a plurality of threaded holes corresponding one-to-one with the outer ring countersunk holes, and the fixing bolt is inserted into the outer ring countersunk holes and tightened in the threaded holes to fix the upper fastening plate and the moving cone together; the upper step surface of the spindle is provided with a plurality of threaded holes corresponding one-to-one with the inner ring countersunk holes, and the axial thrust component is a fastening bolt. The fastening bolt is inserted into the inner ring countersunk holes and tightened in the threaded holes. By continuously tightening the fastening bolt inward, the fastening bolt converts the circumferential rotation into axial movement, thereby pushing the upper fastening plate and the moving cone to move axially downward together.

[0013] In some embodiments, the upper fastening plate is provided with a ring of spaced-apart and axially extending inner ring set screw holes; the disassembly bolt is screwed into the inner ring set screw holes until the bottom end contacts the upper stepped surface of the main shaft, and the disassembly bolt is continuously rotated, the disassembly bolt converts the circumferential rotation into axial movement, thereby driving the upper fastening plate to move axially upward.

[0014] In some embodiments, the upper fastening plate has an annular groove on the side facing away from the moving cone for mounting a protective rubber plate.

[0015] In some embodiments, the conical circular hole consists of an end countersunk hole and an inner elongated hole, and the radial fastening component is a pin. The pin is used for positioning before the moving cone is tensioned, and can share the tangential component force of the moving cone after tensioning. The outer end face of the pin is provided with a threaded hole for easy disassembly.

[0016] In some embodiments, a screw plug is also included, the radial circumferential surface of which is threaded, and the center of the screw plug has an internal hexagon countersunk hole for easy disassembly; the end countersunk hole is a threaded hole, and the screw plug is installed in the end countersunk hole, which on the one hand restricts the radial movement of the pin, and on the other hand prevents the external filler of the moving cone from entering the hole.

[0017] Secondly, the present invention provides a method for disassembling and assembling the fastening structure of the moving cone for a single-cylinder cone crusher, the specific method being as follows: Installation method: Step 1: Hoist the moving cone above the main shaft and lower it until the moving cone contacts the cone surface of the main shaft; Step 2: Adjust the position of the moving cone by evenly inserting multiple pins into the conical holes of the moving cone until they penetrate the moving cone and enter the main shaft, thus positioning the moving cone. Step 3: Secure the upper fastening plate to the upper surface of the moving cone using multiple bolts; Step 4: Insert multiple bolts into the countersunk holes of the upper fastening plate and alternately screw them into the threaded holes of the spindle; Step 5: Insert the inner fastener into the spindle until it contacts the lower stepped surface of the spindle; Step 6: Install the outer fastening sleeve and alternately screw the bolts through the outer fastening sleeve into the moving tapered thread hole; Step 7: Alternately tighten the connecting bolts between the upper fastening plate and the main shaft; Step 8: Alternately tighten the connecting bolts between the outer fastening sleeve and the moving cone; Step 9: Repeat steps 7 and 8 until the required tightness is achieved; Step 10: Screw the plug into the countersunk hole on the outer end face of the pin to complete the installation; Disassembly method: Step 1: Suspend the spindle and moving cone assembly and place them flat in the air; Step 2: Unscrew all the plugs out of the countersunk hole of the moving cone; Step 3: Unscrew all the pins from the countersunk hole of the moving cone; Step 4: Remove the upper fastening plate from the main spindle fastening bolts and the outer locking sleeve from the moving cone fastening bolts; Step 5: Tighten the bolts alternately and evenly into the set screw holes of the upper fastening plate until they are tightened; Step 6: Tighten the bolts alternately and evenly into the set screw holes of the outer fastening sleeve until they are tightened; Step 7: Repeat steps 5 and 6 until the moving cone disengages from the spindle; Step 8: If the inner fastening sleeve sticks to the spindle, insert several wedges into the wedge groove of the inner fastening sleeve and tap it alternately until it detaches from the spindle, thus completing the disassembly.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. The original cone interference fit is replaced with a mechanical tensioning structure, which allows for the installation and disassembly of the moving cone without the need for additional equipment, reducing assembly and disassembly time and improving work efficiency.

[0019] 2. To avoid damage to the moving cone or spindle during disassembly, thus providing assurance for subsequent maintenance and improving product utilization.

[0020] 3. A screw plug is installed on the outside of the pin to restrict the radial movement of the pin and prevent external buffers from entering, ensuring a clean environment for the internal mating surfaces.

[0021] 4. The outer ring of the upper fastening plate is provided with an annular groove for installing a protective rubber plate to prevent dust from entering through external gaps and contaminating the mounting surface and fastening bolts.

[0022] 5. The inner fastening sleeve has a wedge-shaped groove on the circumference of the large end. When removing it, if the inner fastening sleeve is stuck to the stepped surface of the spindle, a wedge can be inserted into the wedge-shaped groove and the inner fastening sleeve can be removed by tapping the wedge. The wedge-shaped groove of the inner fastening sleeve is designed as a blind hole structure and is not drilled through to the inner ring to prevent the wedge from accidentally damaging the mating surface of the spindle. Attached Figure Description

[0023] The accompanying drawings, as part of this invention, are provided to further illustrate the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation thereof. Clearly, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0024] In the attached diagram: Figure 1 This is a schematic diagram of the main shaft and moving cone assembly of the present invention; Figure 2 This is a schematic diagram of the moving cone fastening structure of the present invention; Figure 3 The following is an isometric view of the moving cone of the present invention (a is the external view, b is the internal view). Figure 4 This is a front view of the countersunk hole of the moving cone according to the present invention; Figure 5 This is a schematic diagram of the upper fastening plate of the present invention; Figure 6 The diagram shows the pin and the screw plug of the present invention (a is the pin, b is the screw plug). Figure 7 This is a schematic diagram of the outer fastening sleeve of the present invention; Figure 8 This is a schematic diagram of the inner fastening sleeve of the present invention; Figure 9 This is a schematic diagram of the top screw hole of the upper fastening plate of the present invention; Figure 10 This is a schematic diagram of the set screw hole of the external fastening sleeve of the present invention.

[0025] Attached diagram labels: 10-moving cone, 20-main shaft, 30-upper fastening plate, 40-inner fastening sleeve, 50-outer fastening sleeve, 60-pin, 70-screw plug, 80-protective rubber plate, 90-fastening bolt, 100-fastening bolt.

[0026] a-gap, b-gap.

[0027] 101-Conical round hole, 102-Threaded hole, 103-Threaded hole, 104-End countersunk hole, 105-Internal oblong hole.

[0028] 301 - Inner ring set screw hole, 302 - Inner ring countersunk hole, 303 - Outer ring countersunk hole, 304 - Annular groove.

[0029] 401-Wedge groove, 402-Notch, 403-Conical surface, 404-Cylindrical surface.

[0030] 501 - Countersunk hole, 502 - Lifting hole, 503 - Set screw hole, 504 - Cut, 505 - Conical surface, 506 - Cylindrical surface.

[0031] 601 - Threaded hole.

[0032] 701 - Threaded, 702 - Internal hexagon countersunk hole.

[0033] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and 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 limiting this invention.

[0036] 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] like Figure 1 , Figure 2As shown, a moving cone fastening structure for a single-cylinder cone crusher includes a main shaft 20, a moving cone 10, at least one radial fastening component, an upper fastening plate 30, and a tensioning component. The main shaft 20 is inserted into the central hole of the moving cone 10 until the moving cone 10 contacts the conical surface of the main shaft 20. The radial fastening component is inserted through the conical surface hole 101 of the moving cone 10 and extends into the radial groove of the main shaft 20 to position the moving cone 10. The radial fastening component and the conical surface hole 101 are clearance-fitted, allowing the moving cone 10 to... The moving cone 10 moves axially. The upper fastening plate 30 passes through the main shaft 20 and is fixed to the upper surface of the moving cone 10 by at least one axial fastener. The upper fastening plate 30 is also connected to the upper stepped surface of the main shaft 20 by at least one axial thrust member, and a gap 'a' is left between the upper fastening plate 30 and the upper stepped surface of the main shaft 20 for downward tensioning of the moving cone 10 by the axial thrust member. The tensioning member is arranged at the junction of the lower step of the main shaft 20 and the lower surface of the moving cone 10 for upward tensioning of the moving cone 10. This invention replaces the original cone interference fit with a mechanical tensioning structure, completing the installation and disassembly of the moving cone without additional equipment, reducing assembly and disassembly time, and improving work efficiency; it avoids damage to the moving cone or main shaft during disassembly, providing assurance for subsequent maintenance and improving product utilization.

[0038] The tensioning components described above will be further explained below.

[0039] like Figure 2 As shown, the tensioning component includes an inner fastening sleeve 40, an outer fastening sleeve 50, and at least one axial thrust member. The inner surface of the inner fastening sleeve 40 is a cylindrical surface 404, which is used to fit onto the main shaft 20 until it contacts the lower step surface of the main shaft 20. The outer fastening sleeve 50 is fitted onto the inner fastening sleeve 40, and the outer surface of the outer fastening sleeve 50 is a cylindrical surface 506, which is used to contact the inner circumferential surface of the moving cone 10. The inner surface of the outer fastening sleeve 50 and the outer surface of the inner fastening sleeve 40 are both conical surfaces 505 and 403, respectively. The axial thrust member is used to connect the outer fastening sleeve 50 and the bottom surface of the moving cone 10, and a gap b is left between the outer fastening sleeve 50 and the bottom surface of the moving cone 10, which is used to tension the moving cone 10 upward through the axial thrust member.

[0040] The following provides further explanation of the aforementioned external fastening sleeve.

[0041] like Figure 3 , Figure 7 As shown, the outer fastening sleeve 50 is provided with a ring of countersunk holes 501 arranged at intervals and extending axially. The bottom surface of the moving cone 10 is provided with multiple threaded holes 103 corresponding one-to-one with the countersunk holes 501. The axial thrust component is a fastening bolt 100. After the fastening bolt 100 passes through the countersunk hole 501, it is tightened in the threaded hole 103. By continuously tightening the fastening bolt 100 inward, the fastening bolt 100 converts the circumferential rotation into axial movement, thereby pushing the outer fastening sleeve 50 to move axially upward.

[0042] Further options, such as Figure 10 As shown, the outer fastening sleeve 50 is provided with a ring of spaced and axially extended set screw holes 503; the disassembly bolt is screwed into the set screw hole 503 until the top end contacts the bottom surface of the moving cone 10. The disassembly bolt is continuously rotated, and the disassembly bolt converts the circumferential rotation into axial movement, thereby driving the outer fastening sleeve 50 to move axially downward.

[0043] Further options, such as Figure 7 As shown, the outer fastening sleeve 50 is provided with a ring of spaced-apart lifting holes 502 that extend axially.

[0044] The following provides a further explanation of the aforementioned inner fastening sleeve.

[0045] like Figure 8 As shown, at least one wedge-shaped groove 401 is provided at the outer edge of the upper surface of the inner fastening sleeve 40. The wedge-shaped groove 401 is a blind hole structure. A wedge is inserted into the wedge-shaped groove 401, and the inner fastening sleeve 40 is removed from the spindle 20 by striking the wedge.

[0046] Further options, such as Figure 7 , Figure 8 As shown, both the inner fastening sleeve 40 and the outer fastening sleeve 50 are provided with slits 402 and 504 for changing their own inner diameter.

[0047] The following is a further explanation of the aforementioned upper fastening plate.

[0048] like Figure 3 , Figure 5 As shown, the upper fastening plate 30 is provided with an inner ring of countersunk holes 302 arranged at intervals and extending axially, and an outer ring of countersunk holes 303 arranged at intervals and extending axially. The upper surface of the moving cone 10 is provided with multiple threaded holes 102 corresponding one-to-one with the outer ring countersunk holes 303. After the fixing bolt passes through the outer ring countersunk holes 303, it is tightened in the threaded holes 102, fixing the upper fastening plate 30 and the moving cone 10 together. The upper step surface of the spindle 20 is provided with multiple threaded holes corresponding one-to-one with the inner ring countersunk holes 302. The axial thrust component is the fastening bolt 90. After the fastening bolt 90 passes through the inner ring countersunk holes 302, it is tightened in the threaded holes. By continuously tightening the fastening bolt 90 inward, the fastening bolt 90 converts the circumferential rotation into axial movement, thereby pushing the upper fastening plate 30 and the moving cone 10 to move axially downward together.

[0049] Further options, such as Figure 9As shown, the upper fastening plate 30 is provided with an inner ring of set screw holes 301 arranged at intervals and extending axially; the disassembly bolt is screwed into the inner ring of set screw holes 301 until the bottom end contacts the upper stepped surface of the main shaft 20. The disassembly bolt is continuously rotated, and the disassembly bolt converts the circumferential rotation into axial movement, thereby driving the upper fastening plate 30 to move axially upward.

[0050] Further options, such as Figure 5 As shown, the upper fastening plate 30 has an annular groove 304 on the side facing away from the moving cone, which is used to install the protective rubber plate 80 to prevent dust from entering through external gaps from contaminating the mounting surface and fastening bolts.

[0051] The radial fastening components described above will be further explained below.

[0052] like Figure 3 , Figure 4 , Figure 6 As shown, the conical circular hole 101 consists of an end countersunk hole 104 and an inner elongated hole 105. The radial fastening component is a pin 60. The pin 60 is used for positioning before the moving cone 10 is tensioned, and can share part of the tangential force of the moving cone 10 after tensioning. The outer end face of the pin 60 is provided with a threaded hole 601 for easy disassembly.

[0053] Further options, such as Figure 6 As shown, it also includes a screw plug 70, the radial circumferential surface of the screw plug 70 is provided with a thread 701, and the center of the screw plug 70 is provided with an internal hexagon countersunk hole 702 for easy disassembly; the end countersunk hole 104 is a threaded hole, and the screw plug 70 is installed in the end countersunk hole 104, which on the one hand restricts the radial movement of the pin 60, and on the other hand prevents the external packing of the moving cone 10 from entering the hole.

[0054] The present invention also provides a method for disassembling and assembling the moving cone fastening structure for a single-cylinder cone crusher, the specific method being as follows: Installation method: Step 1: Hoist the moving cone above the main shaft and lower it until the moving cone contacts the cone surface of the main shaft; Step 2: Adjust the position of the moving cone by evenly inserting multiple pins into the conical holes of the moving cone until they penetrate the moving cone and enter the main shaft, thus positioning the moving cone. Step 3: Secure the upper fastening plate to the upper surface of the moving cone using multiple bolts; Step 4: Insert multiple bolts into the countersunk holes of the upper fastening plate and alternately screw them into the threaded holes of the spindle; Step 5: Insert the inner fastener into the spindle until it contacts the lower stepped surface of the spindle; Step 6: Install the outer fastening sleeve and alternately screw the bolts through the outer fastening sleeve into the moving tapered thread hole; Step 7: Alternately tighten the connecting bolts between the upper fastening plate and the main shaft; Step 8: Alternately tighten the connecting bolts between the outer fastening sleeve and the moving cone; Step 9: Repeat steps 7 and 8 until the required tightness is achieved; Step 10: Screw the plug into the countersunk hole on the outer end face of the pin to complete the installation; Disassembly method: Step 1: Suspend the spindle and moving cone assembly and place them flat in the air; Step 2: Unscrew all the plugs out of the countersunk hole of the moving cone; Step 3: Unscrew all the pins from the countersunk hole of the moving cone; Step 4: Remove the upper fastening plate from the main spindle fastening bolts and the outer locking sleeve from the moving cone fastening bolts; Step 5: Tighten the bolts alternately and evenly into the set screw holes of the upper fastening plate until they are tightened; Step 6: Tighten the bolts alternately and evenly into the set screw holes of the outer fastening sleeve until they are tightened; Step 7: Repeat steps 5 and 6 until the moving cone disengages from the spindle; Step 8: If the inner fastening sleeve sticks to the spindle, insert several wedges into the wedge groove of the inner fastening sleeve and tap it alternately until it detaches from the spindle, thus completing the disassembly.

[0055] In summary, this invention replaces the original conical interference fit with a mechanical tensioning structure, enabling the installation and disassembly of the moving cone without additional equipment, reducing assembly and disassembly time and improving work efficiency. It avoids damage to the moving cone or spindle during disassembly, providing assurance for subsequent maintenance and improving product utilization. A screw plug is installed on the outside of the pin to restrict radial movement while preventing external buffering materials from entering, ensuring a clean environment for the internal mating surfaces. An annular groove is provided on the outer ring of the upper fastening plate for installing a protective rubber plate, preventing dust from entering through external gaps and contaminating the mounting surface and fastening bolts. A wedge-shaped groove is provided on the circumference of the large end of the inner fastening sleeve. During removal, if the inner fastening sleeve adheres to the stepped surface of the spindle, a wedge can be inserted into the wedge-shaped groove, and the inner fastening sleeve can be removed by tapping the wedge. The wedge-shaped groove of the inner fastening sleeve is designed as a blind hole structure, not extending to the inner ring, to prevent the wedge from accidentally damaging the spindle mating surface.

[0056] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0057] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A moving cone fastening structure for a single-cylinder cone crusher, characterized in that, include: The main shaft and the moving cone are inserted into the center hole of the moving cone until the moving cone contacts the conical surface of the main shaft. At least one radial fastening component extends from the conical hole of the moving cone into the radial groove of the main shaft to position the moving cone; the radial fastening component is clearance-fitted with the conical hole, allowing the moving cone to move axially. The upper fastening plate passes through the main shaft and is fixed to the upper surface of the moving cone by at least one axial fastener. The upper fastening plate is also connected to the upper step surface of the main shaft by at least one axial thrust member, and a gap is left between the upper fastening plate and the upper step surface of the main shaft for tensioning the moving cone downward by the axial thrust member. The tensioning component is located at the junction of the lower step of the spindle and the lower surface of the moving cone, and is used to tension the moving cone upwards; The tensioning component includes: The inner fastening sleeve has a cylindrical inner surface and is used to fit onto the main shaft until it contacts the lower step surface of the main shaft. An outer fastening sleeve is fitted onto the inner fastening sleeve. The outer surface of the outer fastening sleeve is cylindrical and is used to contact the inner circumferential surface of the moving cone. Both the inner surface of the outer fastening sleeve and the outer surface of the inner fastening sleeve are conical surfaces. At least one axial thrust member is provided for connecting the outer fastening sleeve and the bottom surface of the moving cone, and a gap is left between the outer fastening sleeve and the bottom surface of the moving cone for tensioning the moving cone upward through the axial thrust member; The upper fastening plate is provided with an inner ring of countersunk light holes arranged at intervals and extending axially, and an outer ring of countersunk light holes arranged at intervals and extending axially. The upper surface of the moving cone is provided with a plurality of threaded holes that correspond one-to-one with the countersunk holes of the outer ring. After the fixing bolt is inserted into the countersunk holes of the outer ring, it is tightened into the threaded holes to fix the upper fastening plate and the moving cone together. The upper step surface of the main shaft is provided with multiple threaded holes that correspond one-to-one with the countersunk holes of the inner ring. The axial thrust component is a fastening bolt. After the fastening bolt passes through the countersunk holes of the inner ring, it is tightened in the threaded hole. The fastening bolt is continuously tightened inward, and the fastening bolt converts the circumferential rotation into axial movement, thereby pushing the upper fastening plate and the moving cone to move axially downward together.

2. The moving cone fastening structure for a single-cylinder cone crusher according to claim 1, characterized in that: The outer fastening sleeve is provided with a ring of countersunk holes arranged at intervals and extending axially. The bottom surface of the moving cone is provided with multiple threaded holes that correspond one-to-one with the countersunk holes. The axial thrust component is a fastening bolt. After the fastening bolt passes through the countersunk hole, it is tightened in the threaded hole. By continuously tightening the fastening bolt inward, the fastening bolt converts the circumferential rotation into axial movement, thereby pushing the outer fastening sleeve to move axially upward.

3. The moving cone fastening structure for a single-cylinder cone crusher according to claim 1, characterized in that: The outer fastening sleeve is provided with a ring of spaced-apart set screw holes that extend axially; the disassembly bolt is screwed into the set screw holes until the top end contacts the bottom surface of the moving cone, and the disassembly bolt is continuously rotated, which converts the circumferential rotation into axial movement, thereby driving the outer fastening sleeve to move axially downward.

4. The moving cone fastening structure for a single-cylinder cone crusher according to claim 1, characterized in that: At least one wedge-shaped groove is provided on the outer edge of the upper surface of the inner fastening sleeve. The wedge-shaped groove is a blind hole structure. The inner fastening sleeve is removed from the spindle by inserting a wedge into the wedge-shaped groove and striking the wedge.

5. The moving cone fastening structure for a single-cylinder cone crusher according to claim 1, characterized in that: Both the inner and outer fastening sleeves are provided with slits for changing their inner diameter.

6. The moving cone fastening structure for a single-cylinder cone crusher according to claim 1, characterized in that: The upper fastening plate is provided with a ring of spaced-apart inner ring set screw holes that extend axially; the disassembly bolt is screwed into the inner ring set screw holes until the bottom end contacts the upper stepped surface of the main shaft. The disassembly bolt is continuously rotated, and the disassembly bolt converts the circumferential rotation into axial movement, thereby driving the upper fastening plate to move axially upward.

7. The moving cone fastening structure for a single-cylinder cone crusher according to claim 1, characterized in that: The upper fastening plate has an annular groove on the side facing away from the moving cone for installing a protective rubber plate.

8. The moving cone fastening structure for a single-cylinder cone crusher according to claim 1, characterized in that: The conical circular hole consists of an end countersunk hole and an inner elongated hole. The radial fastening component is a pin. The pin is used for positioning before the moving cone is tensioned, and can share the tangential component of the moving cone after tensioning. The outer end face of the pin is provided with a threaded hole for easy disassembly.

9. The moving cone fastening structure for a single-cylinder cone crusher according to claim 8, characterized in that: It also includes a screw plug, the radial circumferential surface of which is threaded, and the center of the screw plug has an internal hexagon countersunk hole for easy disassembly; the end countersunk hole is a threaded hole, and the screw plug is installed in the end countersunk hole, which on the one hand restricts the radial movement of the pin shaft, and on the other hand prevents the external filler of the moving cone from entering the hole.

10. A method for disassembling and assembling the moving cone fastening structure for a single-cylinder cone crusher according to any one of claims 1 to 9, characterized in that: Installation method: Step 1: Hoist the moving cone above the main shaft and lower it until the moving cone contacts the cone surface of the main shaft; Step 2: Adjust the position of the moving cone by evenly inserting multiple pins into the conical holes of the moving cone until they penetrate the moving cone and enter the main shaft, thus positioning the moving cone. Step 3: Secure the upper fastening plate to the upper surface of the moving cone using multiple bolts; Step 4: Insert multiple bolts into the countersunk holes of the upper fastening plate and alternately screw them into the threaded holes of the spindle; Step 5: Insert the inner fastener into the spindle until it contacts the lower stepped surface of the spindle; Step 6: Install the outer fastening sleeve and alternately screw the bolts through the outer fastening sleeve into the moving tapered thread hole; Step 7: Alternately tighten the connecting bolts between the upper fastening plate and the main shaft; Step 8: Alternately tighten the connecting bolts between the outer fastening sleeve and the moving cone; Step 9: Repeat steps 7 and 8 until the required tightness is achieved; Step 10: Screw the plug into the countersunk hole on the outer end face of the pin to complete the installation; Disassembly method: Step 1: Suspend the spindle and moving cone assembly and place them flat in the air; Step 2: Unscrew all the plugs out of the countersunk hole of the moving cone; Step 3: Unscrew all the pins from the countersunk hole of the moving cone; Step 4: Remove the upper fastening plate from the main spindle fastening bolts and the outer fastening sleeve from the moving cone fastening bolts; Step 5: Tighten the bolts alternately and evenly into the set screw holes of the upper fastening plate until they are tightened; Step 6: Tighten the bolts alternately and evenly into the set screw holes of the outer fastening sleeve until they are fully tightened; Step 7: Repeat steps 5 and 6 until the moving cone disengages from the spindle; Step 8: If the inner fastening sleeve sticks to the spindle, insert several wedges into the wedge groove of the inner fastening sleeve and tap it alternately until it detaches from the spindle, thus completing the disassembly.

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