CN114471842A - Vertical shaft component structure of vertical shaft type impact crusher - Google Patents
Vertical shaft component structure of vertical shaft type impact crusher Download PDFInfo
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- CN114471842A CN114471842A CN202210099917.6A CN202210099917A CN114471842A CN 114471842 A CN114471842 A CN 114471842A CN 202210099917 A CN202210099917 A CN 202210099917A CN 114471842 A CN114471842 A CN 114471842A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
- B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/28—Shape or construction of beater elements
- B02C13/2804—Shape or construction of beater elements the beater elements being rigidly connected to the rotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N23/00—Special adaptations of check valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention provides a vertical shaft component structure of a vertical shaft type impact crusher, which comprises a vertical shaft seat arranged on a stand and a vertical shaft component arranged on the vertical shaft seat, and also comprises: the lower end of the vertical shaft component is connected with a belt pulley, the upper end of the vertical shaft component is connected with an elastic buffer structure and a rotor component, and the elastic buffer component and the rotor component rotate in a vertical shaft manner; elastic buffer structure includes the rotor bottom plate of the supreme balance plate, the loading board that set gradually and the rotor subassembly of connecting down from, sets up elastic shock attenuation part between balance plate and the loading board, makes the loading board relative the balance plate can stretch out and draw back the shock attenuation from top to bottom, make the balance plate with set up compressible elastic space between the loading board, loading board and rotor bottom plate rigid connection accept rotor bottom plate's impact load. The invention balances the large load impact of the rotor bottom plate and absorbs and buffers the impact force, thereby improving the adaptability of the vertical shaft assembly to the impact from the rotor assembly in an uncertain direction and the unbalanced mass distribution.
Description
Technical Field
The invention relates to the field of sand making equipment by machine-made sand, in particular to a vertical shaft component structure of a vertical shaft type impact crusher.
Background
With the restriction and prohibition of the country on the exploitation of natural sand (river sand), the market puts higher requirements on artificial sand (machine-made sand), the sand gradation is required to reach the second-zone sand standard in GB/T14684, and about 85% of the second-zone sand is medium-fine sand. As is known, a crusher adopted in the conventional machine-made sand production is basically vertical shaft type impact crushing, the crusher mainly utilizes centrifugal force generated by high-speed rotation of a circular impeller to throw out stones at the center of the impeller at high speed, so that the stones collide with each other in a high-speed rotation state and are crushed to sand with a size less than 4.75mm, although most of the produced machine-made sand grains are excellent cube bodies, the grading is coarse, and coarse sand is seriously excessive, so that in the whole production process, most of coarse sand in a finished product needs to be returned to the vertical shaft impact crushing again through screening to continue crushing. The particle size of coarse sand is 2-4.75mm mostly, the original rotating speed of the circular impeller cannot enable the materials to generate enough kinetic energy due to the fact that the particle size is too small, so that the materials cannot be effectively crushed, the coarse sand circulates repeatedly in equipment, the yield of medium and fine sand is very small, and therefore the rotating speed of the rotor is considered to be improved, and the circular impeller generates higher kinetic energy.
Meanwhile, the vertical shaft impact crusher adopts a feeding mode that materials are unloaded into the crushing cavity and the rotor bottom plate from the upper part of the material tray, the blanking position, the quality and the impact force of the materials are uncertain, and the distribution and the impact of the materials on the quality in the rotor are uncertain and uneven, so that the rotor rotating at high speed is unbalanced and generates violent vibration due to the uneven distribution of the quality and the uneven and uncertain impact force for the rotor rotating at high speed and the vertical rotating shaft, and the opposite shaft and the bearing can generate non-directional and uncertain impact force and torque. Therefore, the adaptability for solving the uncertain impact and unbalanced mass distribution of the vertical shaft assembly becomes a key point when the rotating speed of the rotor is increased.
In order to solve the problem, the vertical shaft supporting device of the CN201058298Y vertical shaft type impact crusher discloses that a static pressure bearing is adopted to replace a rolling bearing for supporting a vertical shaft in the existing vertical crusher to improve the supporting condition of the vertical shaft, thereby improving the adaptability of the rotating speed of a rotor and the service life of the bearing to continuous random vibration. But the oil supply system is complex and precise, and is not easy to maintain in the working condition site of outdoor mine crushing operation.
CN104722373A a main shaft structure on a vertical shaft impact crusher discloses that the fixing mode adjustment of a main shaft and a main shaft box, three sealing combination sealing, oil path design of a main shaft group and other technical schemes improve the installation firmness, the sealing performance and the lubricating property of the main shaft, but the adaptability to uncertain random vibration and impact of the vertical shaft group is not sufficient on the one hand.
Disclosure of Invention
The invention provides a vertical shaft component structure of a vertical shaft type impact crusher, and aims to improve the adaptability of the vertical shaft component to direction-variable impact and unbalanced mass distribution from a rotor component.
In order to achieve the above object, the present invention provides a vertical shaft component structure of a vertical shaft impact crusher, comprising a vertical shaft seat arranged on a frame, and a vertical shaft component arranged on the vertical shaft seat, further comprising:
the lower end of the vertical shaft component is connected with a belt pulley, the upper end of the vertical shaft component is connected with an elastic buffer structure and a rotor component, and the elastic buffer component and the rotor component rotate in a vertical shaft manner;
the elastic buffer structure comprises: including the rotor bottom plate of supreme balance plate, the loading board that sets gradually and the rotor subassembly of connection down from, the balance plate with set up elastic shock attenuation part between the loading board, make the loading board is relative the balance plate can stretch out and draw back the shock attenuation from top to bottom, makes the balance plate with set up compressible elastic space between the loading board, the loading board with rotor bottom plate rigid connection accepts rotor bottom plate's impact load.
Preferably, the upper portion of balancing plate sets up a plurality of guide posts, the upper portion of guide post sets up the loading board, set up on the loading board with the first direction through-hole that the guide post position corresponds, the guide post passes first direction through-hole, the upper end of guide post sets up spacing end cap, between the balancing plate with set up coil spring on the guide post.
Preferably, the bearing plate is provided with a plurality of uniformly distributed second guide through holes, linear modules are arranged in the second guide through holes and comprise linear slide rails and sliders, the linear slide rails and the sliders are respectively arranged on the bearing plate and the balance plate, and the sliders are opposite to the linear slide rails and slide up and down when the compressible elastic space is compressed or extended.
Preferably, a spacer sleeve is arranged on a vertical shaft of the vertical shaft assembly, an upper sliding bearing is connected to the upper end of the vertical shaft assembly, a lower rolling bearing and a supporting bearing are connected to the lower end of the vertical shaft assembly, a rotor sleeve is arranged between an upper bearing and a lower bearing, the spacer sleeve, the upper sliding bearing, the lower rolling bearing and the supporting bearing are surrounded on the circumference of the vertical shaft to form a sealed lubricating channel, the upper sliding bearing is positioned and installed on an upper bearing end cover, the lower rolling bearing and the supporting bearing are positioned and installed on a lower bearing end cover, an isolating ring is arranged between the lower rolling bearing and the supporting bearing, and a sealing disc is arranged between the bearing end cover and the vertical shaft.
Preferably, the upper bearing end cover is communicated with the upper bearing lubrication cavity and is provided with an upper annular oil through groove, one side of the upper part of the rotor sleeve is provided with an oil injection channel, the lower part of the oil injection channel is provided with an oil injection nozzle, and the upper part of the oil injection channel is communicated with the upper annular oil through groove; the lower bearing end cover is provided with a lower annular oil through groove communicated with the lower rolling bearing, and the lower annular oil through groove is communicated with an oil outlet.
Preferably, a high-level overflow channel is arranged on the other side of the upper end of the rotor sleeve, and a low-level overflow channel is arranged on one side of the lower end of the rotor sleeve.
Preferably, a first check valve is arranged on the high-level overflow channel, and a second check valve is arranged on the low-level overflow channel.
Preferably, the following thin oil lubrication system is employed: the lubricating system adopts two overflow valves with different pressure values, namely a first overflow valve and a second overflow valve, wherein the set pressure P1 of the first overflow valve, the set pressure P2 of the second overflow valve, P2> P1 of the second overflow valve are respectively, the first overflow valve and a two-position four-way electromagnetic valve are in the same working oil path, when the lubricating system normally works, the two-position four-way electromagnetic valve is in a power-off state, the PLC controls the two-position four-way electromagnetic valve to be powered on, and the system lubricating pressure of a bearing depends on the set value P2 of the second overflow valve.
Compared with the related art, the vertical shaft assembly structure provided by the invention has the following beneficial effects:
the elastic buffer structures are arranged on the upper portion of the supporting vertical shaft and the lower portion of the rotor bottom plate, primary equalization and impact force absorption buffering are carried out on large load impact of the rotor bottom plate, radial acting force and impact on the vertical shaft and a bearing are reduced, bending moment generated by the counter shaft is reduced, deflection deformation of the lower portion of the vertical shaft is reduced, accordingly large load impact on the counter shaft bearing can be reduced, the service life of the vertical shaft bearing is prolonged, and the rotating speed and the rated load of the rotor are improved.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a schematic cross-sectional view of the dual-chamber elastic buffer structure c in FIG. 1
FIG. 3 is a schematic view of the balance plate and the components in the second upper cavity of the balance plate;
FIG. 4 is a bottom view of the mechanism showing the components in the second cavity under the carrier plate;
FIG. 5 is a schematic structural diagram of the carrying portion of the present invention;
FIG. 6 is a schematic diagram showing the mechanism in the first cavity at the upper part of the carrying part;
FIG. 7 is a schematic structural view of a U-shaped sealing plate according to the present invention;
FIG. 8 is a schematic view of the construction of the Z-shaped sealing plate of the present invention;
FIG. 9 is a schematic diagram of the lubrication system of the present invention.
Reference numbers in the figures:
1. the vertical shaft, 2, a rotor assembly, 201, a rotor base plate, 3, a belt pulley, 4, a support bearing, 5, a balance plate, 6, a guide post, 601, a first circle of guide posts, 602, a second circle of guide posts, 603, a limit end cap, 7, a bearing plate, 701, a first guide through hole, 702, a second guide through hole, 703, a circumferential notch, 8, a coil spring, 9, a pressing plate, 10, a linear module, 1001, a linear slide rail mounting plate, 1002, a linear slide rail, 1003, a slider mounting plate, 1004, a slider, 11, a connecting post, 1101, a center connecting post, 1102, a distal end connecting post, 1103, a connecting ring, 12, a U-shaped sealing plate, 13, a Z-shaped sealing plate, 14, a spacer sleeve, 15, an upper sliding bearing, 16, a rotor sleeve, 17, an upper bearing end cover, 1701, an upper annular through hole, 18, a lower bearing cover, 1801, a lower annular through hole, 19, an oil injection channel, 20, a first ring, a second ring, 10, a connecting plate, a, The oil-water separator comprises a threaded hole, 21, a high-position overflow channel, 22, a first check valve, 23, a low-position overflow channel, 24, a second check valve, 25, a lubricating pump, 26, an oil tank, 27, a filter, 28, a pressure gauge, 29, an air cooling device, 30, a first overflow valve, 31, a second overflow valve, 32, a two-position four-way solenoid valve, 33, a lower rolling bearing, a first cavity, b, a second cavity, P, an oil filling nozzle and a T oil outlet.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
As shown in fig. 1 to 9, a vertical shaft assembly structure of a vertical shaft type impact crusher comprises a vertical shaft seat arranged on a frame and a vertical shaft group arranged on the vertical shaft seat, wherein the lower end of the vertical shaft group is connected with a belt pulley 3 through a belt pulley taper sleeve, and the upper end of the vertical shaft group is connected with a dual-cavity elastic buffer structure c and a rotor assembly 2. Specifically, the vertical shaft group comprises a vertical shaft 1, the vertical shaft 1 is positioned and installed in a vertical shaft box, the upper part of the vertical shaft 1 is connected with a balance plate 5 through a key, as shown in fig. 2, 3 and 4, two circles of guide posts 6 are arranged on the upper part of the balance plate 5, a first circle of guide posts 601 is arranged at the center of the balance plate 5 above the vertical shaft 1, a second circle of guide posts 602 is arranged at the outer circle of the balance plate 5, each circle is provided with a plurality of uniformly arranged guide posts 6, in other embodiments, the arrangement mode of the guide posts can be a plurality of concentric circles, the number of the guide posts in each circle, the specific number of circles and the size of the guide posts can be determined through conventional mechanical calculation according to rotor load and impact force parameters, and the calculation can be mastered and practiced by a person skilled in the art. The upper portion of guide post 6 sets up loading board 7, set up on loading board 7 with the first direction through-hole 701 that the guide post 6 position corresponds, guide post 6 passes first direction through-hole 701, the upper end of guide post 6 sets up spacing end cap 603, balance plate 5 with between the loading board 7 set up coil spring 8 on the guide post 6, coil spring 8's both ends set up clamp plate 9, clamp plate 9 cover is located the outer lane of guide post 6. A second guide through hole 702 is formed in the middle of two adjacent second guide posts 602 on the common coil of the second ring of guide posts 602 of the bearing plate 7, and a linear module 10 is arranged in the second guide through hole 702. Specifically, a linear slide rail mounting plate 1001 is arranged on one side of the second guide through hole 702, and a linear slide rail 1002 is arranged on the linear slide rail mounting plate 1001. A slider mounting plate 1003 is arranged at a corresponding position on the balance plate 5, a slider 1004 is arranged on the slider mounting plate 1003, and the slider 1004 is arranged in a matching manner with the linear slide rail 1002. The guide posts 6, the coil springs 8 and the linear modules 10 are all circumferentially arranged. The helical spring 8 balances and buffers the unbalanced large load impact force on the bearing plate 7, and reduces the radial acting stress on the vertical shaft 1 and the bearing. The straight line module 10 that the circumference and coil spring 8 correspond the setting holds axial force and motion path, reduces circular motion centrifugal force to coil spring 8's radial effort, combines the clamp plate effect, keeps coil spring 8 to the reduction, absorption and the balanced effect of vertical heavy load impact, improves coil spring 8 practical life.
It should be noted again that in this embodiment, the size, number, arrangement mode of the guide posts, and the elastic modulus, model, pitch, length selection of the corresponding coil springs are determined according to the model, impact load, processing capability, rated power, rated speed, and other parameters of the specific vertical shaft crusher, and specifically, the calculation may be performed according to the "practical manual for shock absorber design selection and quality inspection standard specification", which is known to those skilled in the art and is fully disclosed in the present invention.
As shown in fig. 5, fig. 6 and other views, the upper portion of the bearing plate 7 is provided with a connecting column 11, the connecting column 11 includes a central connecting column 1101 closer to the rotation center, and further includes a distal connecting column 1102 farther from the rotation center, a connecting ring 1103 is arranged between the distal connecting columns 1102, a connecting threaded hole 20 is arranged at the center of the connecting column 11, the upper portion of the bearing plate 7 is provided with a rotor assembly 2, and the connecting column 11 and the connecting ring 1103 are bolted to a rotor bottom plate 201 of the rotor assembly 2. The carrier plate 7, the connecting post 11 and the connecting ring 1103 are integrally cast. A first cavity a is defined by the rotor bottom plate 201, the bearing plate 7, the distal end connecting column 1102 and the connecting ring 1103; a second cavity b is formed between the bearing plate 7 and the balance plate 5, the space of the first cavity a is fixedly connected through the connecting column 11 and the connecting ring 1103 and becomes an upward movement amount space of the guide column 6, and the limit upward movement height of the limiting cap 603 of the guide column 6 is not higher than the lower surface of the rotor bottom plate 201. The second cavity b is an elastic buffer cavity, and elastically buffers the impact unbalanced load on the rotor bottom plate 201, so that the radial impact force on the vertical shaft 1 is reduced, and the impact stress on the bearing under the radial action is reduced.
The diameter of loading board 7 is greater than the diameter of balance plate 5, and the edge of loading board 7 sets up the notch cuttype outer fringe, the top of notch cuttype outer fringe forms circumference breach 703, connect on the circumference breach 703 as the U type shrouding 12 shown in fig. 7, U type shrouding 12 include with the last top surface of circumference breach 703 cooperation assembly still includes bottom surface down, the inner circle diameter of bottom surface is greater than the diameter of loading board 7 down. The lower bottom surface of the U-shaped sealing plate 12 is connected to the Z-shaped sealing plate 13 shown in fig. 8 by bolts, and when the coil spring 8 is naturally extended, the lower edge of the Z-shaped sealing plate 13 is not connected to and wrapped around the lower bottom surface of the balance plate 5. The impact type unbalanced load on the rotor base plate 2 is elastically buffered and the stress balance is adjusted through the second cavity b, so that the spiral spring 8 is compressed, the sliding block 1004 moves to a certain degree relative to the linear sliding rail 1002, the second cavity b is highly compressed, and the U-shaped sealing plate 12 drives the Z-shaped sealing plate 13 to move downwards. The special structure of the U-shaped closing plate 12 and the Z-shaped closing plate 13 is convenient for disassembly and assembly, and the relative sealing performance of the second cavity b is kept.
The double-cavity elastic buffer structures c are arranged on the upper portion of the supporting vertical shaft and the lower portion of the rotor bottom plate, so that the large load impact of the rotor bottom plate is subjected to primary equalization and impact force absorption and buffering, the radial acting force and impact on the vertical shaft and a bearing are reduced, the bending moment generated by the counter shaft is reduced, and the deflection deformation of the lower portion of the vertical shaft is reduced, so that the large load impact on the counter shaft bearing can be reduced, and the service life of the vertical shaft bearing and the rotating speed and rated load of the rotor are prolonged.
As shown in fig. 1 and fig. 9, a spacing sleeve 14 is arranged on the transmission vertical shaft 1, the upper end is connected with an upper sliding bearing 15, the lower end is connected with a lower rolling bearing 33 and a supporting bearing 4, and the supporting bearing 4 adopts a self-aligning roller bearing. The spacing sleeve 14, the upper sliding bearing 15, the lower rolling bearing 33 and the supporting bearing 4 are enclosed into a sealed lubricating channel on the circumference of the vertical shaft, and lubricating oil flows from top to bottom among bearing gaps on the circumference of the vertical shaft, is fully lubricated and takes away friction heat of the vertical shaft. A rotor sleeve 16 is provided between the upper and lower bearings. The upper sliding bearing 15 is positioned and installed on the upper bearing end cover 17, the lower rolling bearing 33 and the supporting bearing 4 are positioned and installed on the lower bearing end cover 18, and a spacer ring is arranged between the lower rolling bearing 33 and the supporting bearing 4. A sealing disc is arranged between the bearing end cover and the vertical shaft. The upper bearing end cover 17 is communicated with the upper bearing lubrication cavity and is provided with an upper annular oil through groove 1701, one side of the upper part of the rotor sleeve 16 is provided with an oil injection channel 19, the lower part of the oil injection channel 19 is provided with an oil injection nozzle P, and the upper part of the oil injection channel is communicated with the upper annular oil through groove 1701. The other side of the upper end of the rotor sleeve 16 is provided with a high-level overflow channel 21, the high-level overflow channel 21 is communicated with a high-level overflow pipeline, and the high-level overflow pipeline is provided with a first check valve 22. The lower bearing end cover 18 is provided with a lower annular oil through groove 1801 communicated with the lower rolling bearing 33, one side of the lower end of the rotor sleeve 16 is provided with a low-level overflow channel 23, the low-level overflow channel 23 is communicated with a low-level overflow pipeline, and the low-level overflow pipeline is provided with a second one-way valve 24. The high-level overflow channel 21 and the low-level overflow channel 23 are disposed at two opposite corners of the middle section of the rotor sleeve 16, and respectively correspond to the upper bearing and the lower bearing, and the lower annular oil groove is communicated with the oil outlet. Lubricating oil is distributed rapidly through bearing rotation after entering bearing inner and outer races to receive self gravity to draw and flow into the bearing group below, the lubricating oil that fails to flow out in time can also flow into the bearing group below through the overflow mouth, and finally lubricating oil flows to the oil catch bowl through overflow mouth and bearing roller clearance, and flows out to the thin oil station through going out oil-out tank bottom oil-out T.
The oil is pressurized and fed from an upper oil inlet, so that the upper sliding bearing 14 is immersed and fully lubricated, and the lubricating oil is fully filled in the bearing bush, the bearing gap and the shaft sleeve. Specifically, as the vertical shaft rotates, the shaft journal will deflect its center toward the other side by a distance under the influence of centrifugal force. A gap is formed in the sliding bearing from the size to the small size. Due to the rotation of the shaft, pressurized lubricating oil with certain viscosity is squeezed into the small side of the gap from the large side of the gap, so that pressure is generated to lift the shaft, the working surfaces of the shaft neck and the bearing are separated by an oil film, and dynamic pressure lubrication is realized. The lubricating oil extruded by the upper sliding bearing downwards takes away the heat of the rotating shaft and enters the lower rolling bearing at the lower part for lubrication. The friction surface of the upper sliding bearing is separated by lubricating oil without direct contact, so that friction loss and surface wear can be reduced, the formed thick oil film also has certain vibration absorption capacity, and the area for bearing load is large, and complete liquid friction is easily formed during high-speed rotation, so that the sliding bearing has stronger adaptability to large-load impact and high-speed rotation.
When the internal lubricating oil hydraulic pressure is higher than the opening pressure of the one-way valve, the lubricating oil can partially flow out of the cavity, and the upper bearing and the lower bearing are subjected to timely overflow protection to avoid generating overpressure resistance; on the other hand, the lubricating oil flowing out through the check valve is convenient for field personnel to visually observe the lubricating oil condition in the cavity, and is convenient for judging the use and adjustment of the hydraulic lubricating system.
The present embodiment employs a thin oil lubrication system as shown in fig. 9: the motor is started to drive the lubricating pump 25 to work, and oil is sucked from the oil tank 26 and is supplied to system equipment through a filter 27, a pressure gauge 28 and other detection gauges and an air cooling device 29. The lubricating system adopts two overflow valves with different pressure values, namely a first overflow valve 30 and a second overflow valve 31, so as to meet the requirements of the system under different conditions. The set pressure P1 of the first relief valve 30 is lower than the set relief valve pressure P2 of the second relief valve 31, and the first relief valve 30 and the one two-position four-way solenoid valve 32 are in the same working oil path. When the lubricating system works normally, the two-position four-way electromagnetic valve 32 is in a power-off state, and the system pressure depends on the set value of the first overflow valve 30; when the impact load of the vertical shaft is increased and the rotating speed is large, and the equipment is in an emergency stop and start working condition, the dynamic load of the vertical shaft can directly act on the bearing to generate instant heavy-load contact collision and forced vibration, the PLC controls the two-position four-way electromagnetic valve to be electrified at the moment, the system lubricating pressure of the bearing depends on the set value of the second overflow valve to be P2, the wedge-shaped gap in the lubricating cavity of the bearing is enlarged, more lubricating oil is injected to form an instant thickened oil film, better absorption and pressure relief are carried out on the impact load and other dynamic pressures, the acting stress of the inner ring and the outer ring of the bearing is reduced, and the bearing is more favorable for bearing the impact load. The lubricating pump is started in a inching mode, and when the system pressure is lower than the set value of the pressure controller, the oil pump is automatically driven to work, so that the lubricating requirement of the host is met.
In the embodiment, the upper end of the vertical shaft is provided with the upper sliding bearing, the lower end of the vertical shaft is provided with the rolling bearing, and the optimized lubricating system is matched, so that the liquid lubricating condition is ensured, and the vertical shaft group structure is more beneficial to the high-speed operation of large load on the vertical shaft crusher; through the double-pressure lubrication station system provided with the first overflow valve and the second overflow valve, lubrication of the counter shaft bearing is lubricated under different working conditions, so that an oil film of the sliding bearing is thickened under the working conditions that the impact load of the vertical shaft is large, the rotating speed is large, the sudden stop and starting working conditions of equipment and the like are greatly tested on the bearing, the better vibration absorption capacity is realized, the starting thrust is improved, and the unbalanced impact load can be favorably borne.
The embodiment utilizes the double-cavity elastic buffer structure, the rolling of the vertical shaft, the sliding bearing and the matched double-pressure regulation and control lubricating system, and balances, buffers, absorbs and deals with and protects the unbalanced impact load of the rotor of the vertical shaft crusher from multiple aspects and angles, so that the service life of the vertical shaft bearing is prolonged, the vertical shaft bearing seat can bear larger impact and vibration and improve the rotating speed, and the vertical shaft crusher is safer and more reliable.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The utility model provides a vertical shaft subassembly structure of vertical shaft type impact crusher, is including setting up the vertical shaft seat in the frame to and set up the vertical shaft subassembly on the vertical shaft seat, its characterized in that still includes:
the lower end of the vertical shaft component is connected with a belt pulley, the upper end of the vertical shaft component is connected with an elastic buffer structure and a rotor component, and the elastic buffer component and the rotor component rotate in a vertical shaft manner;
the elastic buffer structure: including the rotor bottom plate of supreme balance plate, the loading board that sets gradually and the rotor subassembly of connection down from, the balance plate with set up elastic shock attenuation part between the loading board, make the loading board is relative the balance plate can stretch out and draw back the shock attenuation from top to bottom, makes the balance plate with set up compressible elastic space between the loading board, the loading board with rotor bottom plate rigid connection accepts rotor bottom plate's impact load.
2. The vertical shaft assembly structure of a vertical shaft impact crusher according to claim 1, wherein a plurality of guide posts are provided on the upper part of the balance plate, a bearing plate is provided on the upper part of the guide posts, a first guide through hole corresponding to the position of the guide posts is provided on the bearing plate, the guide posts pass through the first guide through hole, a limiting end cap is provided on the upper end of the guide posts, and a coil spring is provided on the guide posts between the balance plate and the bearing plate.
3. The vertical shaft assembly structure of a vertical shaft impact crusher according to claim 1, wherein a plurality of second guide through holes are uniformly distributed in the bearing plate, a linear module is arranged in each second guide through hole, each linear module comprises a linear slide rail and a slide block, the linear slide rails and the slide blocks are respectively arranged on the bearing plate and the balance plate which are defined by the second guide through holes, and the slide blocks slide up and down relative to the linear slide rails when the compressible elastic space is compressed or extended.
4. The vertical shaft assembly structure of a vertical shaft impact crusher according to claim 1, characterized in that a spacer sleeve is arranged on the vertical shaft of the vertical shaft assembly, the upper end is connected with an upper sliding bearing, the lower end is connected with a lower rolling bearing and a support bearing, a rotor sleeve is arranged between the upper bearing and the lower bearing, the spacer sleeve, the upper sliding bearing, the lower rolling bearing and the support bearing are enclosed to form a sealed lubrication channel on the circumference of the vertical shaft, the upper sliding bearing is positioned and installed on an upper bearing end cover, the lower rolling bearing and the support bearing are positioned and installed on a lower bearing end cover, a separation ring is arranged between the lower rolling bearing and the support bearing, and a sealing disk is arranged between the bearing end cover and the vertical shaft.
5. The vertical shaft assembly structure of a vertical shaft impact crusher according to claim 4, wherein the upper bearing end cap is provided with an upper annular oil through groove communicating with the upper bearing lubrication chamber, one side of the upper part of the rotor sleeve is provided with an oil injection passage, the lower part of the oil injection passage is provided with an oil nozzle, and the upper part of the oil injection passage is communicated with the upper annular oil through groove; the lower bearing end cover is provided with a lower annular oil through groove communicated with the lower rolling bearing, and the lower annular oil through groove is communicated with an oil outlet.
6. The vertical shaft assembly structure of the vertical shaft impact crusher of claim 5, wherein the other side of the upper end of the rotor sleeve is provided with a high-level overflow channel and the one side of the lower end of the rotor sleeve is provided with a low-level overflow channel.
7. The vertical shaft assembly structure of a vertical shaft impact crusher according to claim 6, characterized in that a first check valve is provided on said high level overflow channel and a second check valve is provided on said low level overflow channel.
8. The vertical shaft assembly structure of a vertical shaft impact crusher according to claim 1, characterized in that the following thin oil lubrication system is employed: the lubricating system adopts two overflow valves with different pressure values, namely a first overflow valve and a second overflow valve, wherein the set pressure P1 of the first overflow valve, the set pressure P2 of the second overflow valve, P2> P1 of the second overflow valve are respectively, the first overflow valve and a two-position four-way electromagnetic valve are in the same working oil path, when the lubricating system normally works, the two-position four-way electromagnetic valve is in a power-off state, the PLC controls the two-position four-way electromagnetic valve to be powered on, and the system lubricating pressure of a bearing depends on the set value P2 of the second overflow valve.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118698668A (en) * | 2024-08-29 | 2024-09-27 | 徐州鑫华耐磨材料有限公司 | Rotor structure of vertical shaft impact crusher |
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|---|---|
| CN114471842B (en) | 2023-09-01 |
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