CN116099753A - Square swing screen vibration exciter device - Google Patents
Square swing screen vibration exciter device Download PDFInfo
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- CN116099753A CN116099753A CN202310360397.4A CN202310360397A CN116099753A CN 116099753 A CN116099753 A CN 116099753A CN 202310360397 A CN202310360397 A CN 202310360397A CN 116099753 A CN116099753 A CN 116099753A
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- air
- driven shaft
- vibration exciter
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- shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
- B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
- B06B1/161—Adjustable systems, i.e. where amplitude or direction of frequency of vibration can be varied
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The utility model relates to a technical field of vibratory equipment, especially relate to a square oscillating screen vibration exciter device, it includes the casing, is equipped with driving shaft and driven shaft parallel to each other in the casing, and the driving shaft rotates around self axis to be connected in the casing, and the driven shaft rotates around self axis to be connected in the casing, and fixed cover is equipped with the driving gear on the driving shaft, and fixed cover is equipped with the driven gear on the driven shaft, and the driving gear meshes in the driven gear; the driving shaft is provided with a first eccentric block, the driven shaft is provided with two second eccentric blocks which are sequentially arranged along the axis of the driven shaft, the second eccentric block is provided with a lantern ring which is rotationally connected with the driven shaft around the axis of the driven shaft, and the driven shaft is rotationally arranged on the inner side of the lantern ring in a penetrating way; the driven shaft is fixedly sleeved with two annular air bags, the air bags are in one-to-one correspondence with the lantern rings and are positioned on the inner sides of the lantern rings, and the two air bags are connected with the same group of control mechanisms. The vibration track adjusting device can improve the problem that the vibration track of the vibration exciter is low in adjusting efficiency and cannot be accurately adjusted.
Description
Technical Field
The application relates to the technical field of vibration equipment, in particular to a square swinging screen vibration exciter device.
Background
The square swing sieve is high-efficiency screening equipment which is developed and designed by users meeting the requirements of large yield and high precision, and the square swing sieve screens and separates materials through vibration of the square swing sieve in the use process, wherein the vibration screening of the square swing sieve is usually completed through a vibration exciter. The vibration exciter is a device which is added on some machines and equipment and used for generating excitation force, and can be used as an excitation component to form a vibrating machine for realizing the work of conveying materials or objects, screening, compacting, shaping, tamping soil sand and gravel and the like.
By searching, chinese patent publication No. CN107999364B discloses a vibration exciter with an adjustable track. The device comprises a shell, a driving shaft and a driven shaft which are arranged in the shell and are parallel to each other, wherein the driving shaft and the driven shaft are respectively fixedly provided with the same first eccentric block, and the driven shaft is provided with a rotatable second eccentric block; the clutch mechanism comprises two identical first gears which are fixedly arranged on the driving shaft at intervals, a duplex gear which is arranged on the driven shaft in a sliding manner, a second gear which is fixedly connected with the second eccentric block and a shifting fork which is used for shifting the duplex gear to slide on the driven shaft, wherein the duplex gear comprises a first duplex sub-gear and a second duplex sub-gear, the first duplex sub-gear can be respectively meshed with the two first gears, and the second duplex sub-gear can be meshed with the second gear. The invention has various vibration tracks, and is convenient to control and adjust in the various vibration tracks to adapt to production requirements.
With respect to the related art in the above, the inventors consider that there are the following drawbacks: when adjusting the vibration track of the vibration exciter, a worker needs to adjust the positions of the first duplex pinion and the second duplex pinion through the sliding handle, and the rotation circles of the driving shaft and the driven shaft are not necessarily integers, so that the first duplex pinion can not be accurately meshed with the first pinion, the second duplex pinion can not be accurately meshed with the second pinion, and at the moment, the worker needs to manually complete the meshing between the gears, so that the adjustment efficiency of the vibration track of the vibration exciter is affected; in addition, only through the cooperation of shift fork and driven shaft, then duplex gear is likely to slide on the driven shaft, has influenced duplex gear meshing in first gear and second gear, leads to the vibration exciter probably unable accurate regulation vibration orbit, consequently needs the improvement.
Disclosure of Invention
In order to solve the problems that the vibration track of the vibration exciter is low in adjusting efficiency and cannot be accurately adjusted, the square swing sieve vibration exciter device is provided.
The application provides a square rocking screen vibration exciter device adopts following technical scheme: a square swinging screen vibration exciter device comprises a shell, wherein a driving shaft and a driven shaft which are parallel to each other are arranged in the shell, the driving shaft is rotationally connected with the shell around the axis of the driving shaft, the driven shaft is rotationally connected with the shell around the axis of the driven shaft, a driving gear is fixedly sleeved on the driving shaft, a driven gear is fixedly sleeved on the driven shaft, and the driving gear is meshed with the driven gear;
the driving shaft is provided with a first eccentric block, the driven shaft is provided with two second eccentric blocks which are sequentially arranged along the axis of the driven shaft, the second eccentric block is provided with a lantern ring which is rotationally connected with the driven shaft around the axis of the driven shaft, and the driven shaft is rotationally arranged on the inner side of the lantern ring in a penetrating way;
the driven shaft is fixedly sleeved with two annular air bags, the air bags are in one-to-one correspondence with the lantern rings and are positioned at the inner sides of the lantern rings, the two air bags are connected with the same group of control mechanisms, the control mechanisms can charge air into the air bags and can exhaust air from the air bags, and when the control mechanisms charge air into the air bags, the inflated air bags can be abutted against the inner walls of the lantern rings;
the outer wall of the air bag is provided with a convex rib, and the inner wall of the lantern ring is provided with a clamping groove for clamping the convex rib.
Optionally, the control mechanism includes the gas tank of installing on the casing, slides and inlay the push pedal of establishing in the gas tank and be used for driving the gliding drive assembly of push pedal in the gas tank, and the intercommunication has the trachea on the gas tank, and the trachea passes through the air guide assembly to be linked together in two gasbags, and the trachea is rotated around the driven shaft axis and is connected in the air guide assembly, is equipped with on one of them gasbag and is used for blockking the air guide assembly to its inside block assembly that admits air.
Optionally, the drive subassembly includes the screw rod of rotating connection in the gas tank and installs the spiral shell section of thick bamboo on the push pedal around self axis, and the length direction of screw rod and spiral shell section of thick bamboo is the same with the slip direction of push pedal in the gas tank, and the one end screw thread fit of screw rod is in the spiral shell section of thick bamboo, and the other end of screw rod is located the gas tank outside.
Optionally, the screw rod stretches out to the fixed cover in one end in the gas tank outside and is equipped with the worm wheel, has the worm on the meshing on the worm wheel, and the worm rotates around self axis and connects in the gas tank.
Optionally, the air guide assembly comprises an air cavity and two air passages, wherein the air cavity and the two air passages are arranged in the driven shaft, the air cavity penetrates through one end of the driven shaft, one end of the air pipe stretches into the opening of the air cavity and is fixedly sleeved with a sealing bearing, the sealing bearing is fixedly embedded in the air cavity, and the air pipe, the sealing bearing and the driven shaft are coaxially arranged; the air flue corresponds with the gasbag one by one, and the one end of air flue communicates in the air cavity, and the other end of air flue runs through in the lateral wall of driven shaft and communicates in the gasbag.
Optionally, the blocking component comprises a connecting hose communicated with the two air bags and a one-way valve arranged in one air passage, a sealing disc is embedded in the connecting hose, part of the side wall of the sealing disc is fixed on the inner wall of the connecting hose, and the one-way valve is used for blocking the air passage to enter the corresponding air bag.
Optionally, the lantern ring internal fixation inlays and is equipped with two and keeps off the ring, and two keep off the ring and all be the interval setting with the driven shaft, two keep off the ring opposite one side and enclose jointly and be used for the centre gripping cavity of centre gripping inflation gasbag.
Optionally, an embedded ring groove for embedding the inflatable air bag is arranged on the inner wall of the lantern ring.
In summary, the present application includes the following beneficial technical effects:
1. in the rotation process of the driving shaft and the driven shaft, the driving shaft drives the first eccentric blocks to synchronously rotate, the driven shaft cannot drive the two second eccentric blocks to synchronously rotate due to the arrangement of the rotating bearing, so that the second eccentric blocks cannot provide centrifugal force, and the centrifugal force generated by the first eccentric blocks during rotation can drive the vibration exciter to vibrate along a circular track;
2. when the air box is used for introducing air into the air cavity through the air pipe, the air in the air cavity cannot enter the corresponding air bag through the air pipe provided with the one-way valve because the one-way valve blocks the air passage from introducing air into the corresponding air bag, and at the moment, the air in the air cavity enters the corresponding air bag through the other air passage, so that the expansion of a single air bag is realized, and the vibration exciter can vibrate along a linear track;
3. when a single air bag expands to a critical point, the connecting hose also expands, at the moment, the inner diameter of the connecting hose is enlarged, a gap is formed between the part of the sealing disc, which is not connected with the inner wall of the connecting hose, and the inner wall of the connecting hose, so that the air bag expanded to the critical point can enter the other air bag through the gap, the expansion of the two air bags is realized, and the vibration exciter can vibrate along an elliptic track.
Drawings
FIG. 1 is a schematic diagram of a vibration exciter in an embodiment of the present application;
FIG. 2 is a schematic cross-sectional structural view of the interior of a housing in an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of a vibration exciter in an embodiment of the present application;
FIG. 4 is a schematic cross-sectional view of a driven shaft and collar in an embodiment of the present application;
fig. 5 is a schematic cross-sectional view of the interior of the collar in an embodiment of the present application.
Reference numerals: 1. a housing; 2. a driving shaft; 21. a drive gear; 22. a first eccentric block; 3. a driven shaft; 31. a driven gear; 32. a second eccentric block; 33. a collar; 34. a rotating bearing; 35. a ring groove is embedded; 36. a clamping groove; 4. an air bag; 41. a rib; 5. an air box; 51. an air pipe; 52. a push plate; 53. sealing the bearing; 6. an air guide assembly; 61. an air cavity; 62. an airway; 7. driving the assembly; 71. a screw rod; 72. a screw cylinder; 73. a worm wheel; 74. a worm; 8. a blocking assembly; 81. a connecting hose; 82. a one-way valve; 83. a sealing plate; 9. a baffle ring; 91. and a clamping cavity.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-5.
The embodiment of the application discloses a square swinging screen vibration exciter device. As shown in fig. 1 and 2, a square oscillating screen vibration exciter device comprises a shell 1, wherein a driving shaft 2 and a driven shaft 3 which are parallel to each other are arranged in the shell 1, the driving shaft 2 is rotationally connected with the shell 1 around the axis of the driving shaft, and the driven shaft 3 is rotationally connected with the shell 1 around the axis of the driven shaft.
The driving shaft 2 is fixedly sleeved with a driving gear 21, the driven shaft 3 is fixedly sleeved with a driven gear 31, and the driving gear 21 is meshed with the driven gear 31, so that when the driving shaft 2 rotates, the driving shaft 2 drives the driven shaft 3 to synchronously and reversely rotate through the meshing of the driving gear 21 and the driven gear 31.
As shown in fig. 3 and 4, the driving shaft 2 is mounted with a first eccentric block 22; the driven shaft 3 is provided with two second eccentric blocks 32 which are sequentially arranged along the axis of the driven shaft 3, a lantern ring 33 is arranged on the second eccentric blocks 32, and the driven shaft 3 is rotatably arranged on the inner side of the lantern ring 33 in a penetrating manner; the collar 33 is fixedly embedded with a rotating bearing 34, and the driven shaft 3 is fixedly embedded in the rotating bearing 34, so that the collar 33 is rotationally connected with the driven shaft 3 around the axis of the driven shaft 3.
In the rotation process of the driving shaft 2 and the driven shaft 3, the driving shaft 2 drives the first eccentric blocks 22 to synchronously rotate, the driven shaft 3 cannot drive the two second eccentric blocks 32 to synchronously rotate due to the arrangement of the rotating bearing 34, so that the second eccentric blocks 32 cannot provide centrifugal force at the moment, and the centrifugal force generated by the first eccentric blocks 22 during rotation can drive the vibration exciter to vibrate along a circular track.
The driven shaft 3 is fixedly sleeved with two annular air bags 4, the air bags 4 are in one-to-one correspondence with the lantern rings 33 and are positioned on the inner sides of the lantern rings 33, the two air bags 4 are connected with the same group of control mechanisms, and the control mechanisms can inflate the air bags 4 and can exhaust air from the air bags 4.
When the control mechanism inflates the air bag 4, the inflated air bag 4 can be abutted against the inner wall of the lantern ring 33, at the moment, the driven shaft 3 can drive the second eccentric block 32 to synchronously rotate through the abutting force between the air bag 4 and the lantern ring 33, and workers can control the number of the inflated air bags 4 through the control mechanism.
When only one balloon 4 is inflated, only one second eccentric mass 32 rotates, and the centrifugal force generated by the second eccentric mass 32 during rotation partially counteracts the centrifugal force generated by the first eccentric mass 22 during rotation, so that the vibration exciter vibrates along a linear track.
When both the air bags 4 are inflated, both the second eccentric blocks 32 are rotated, and the centrifugal force generated by the second eccentric blocks 32 during rotation is greater than that generated by the first eccentric blocks 22 during rotation, so that the vibration exciter vibrates along the elliptical track.
The control mechanism comprises an air box 5 arranged on the outer wall of the shell 1, one side of the air box 5, facing the shell 1, is communicated with an air pipe 51, the air pipe 51 is communicated with two air bags 4 through an air guide assembly 6, and the air pipe 51 is rotationally connected with the air guide assembly 6 around the axis of the driven shaft 3, so that the air box 5 does not synchronously rotate along with the driven shaft 3, and the stability of the air box 5 is ensured; and even if the air box 5 is in a static state, the driven shaft 3, the air bag 4 and the air guide assembly 6 can rotate relative to the air pipe 51, so that the air pipe 51 is not easy to be knotted and damaged.
As shown in fig. 2 and 3, one end of the air box 5 is in an open arrangement, the push plate 52 is slidably embedded in the open end of the air box 5, the air box 5 is further provided with a driving assembly 7, the driving assembly 7 comprises a screw rod 71 and a screw barrel 72, the screw rod 71 is rotationally connected to the open end of the air box 5 around the axis of the screw rod 71, the screw barrel 72 is mounted on the push plate 52, the length directions of the screw rod 71 and the screw barrel 72 are the same as the sliding direction of the push plate 52 in the air box 5, one end of the screw rod 71 is in threaded fit with the screw barrel 72, and the other end of the screw rod 71 is located outside the air box 5.
The workman stretches out to the one end in the air tank 5 outside through rotatory lead screw 71, can make lead screw 71 drive push pedal 52 through spiral shell section of thick bamboo 72 and slide in air tank 5, and push pedal 52 will push the gas in the air tank 5 into gasbag 4 through trachea 51 and air guide subassembly 6 or take out the gas in the gasbag 4 through trachea 51 and air guide subassembly 6 for gasbag 4 inflation or shrink have made things convenient for the regulation of vibration trace of vibration exciter.
One end of the screw rod 71 extending to the outer side of the air box 5 is fixedly sleeved with a worm wheel 73, a worm 74 is meshed with the worm wheel 73, the worm 74 is rotationally connected to the air box 5 around the axis of the screw rod, and a worker can drive the screw rod 71 to rotate through the worm wheel 73 by rotating the worm 74, so that the normal operation of air inlet and air outlet of the air box 5 is ensured; and the worm wheel 73 and the worm 74 have self-locking function, so that the stability of the push plate 52 in the air box 5 is ensured, and the air in the expansion air bag 4 is not easy to flow back into the air box 5 when a worker does not rotate the worm 74.
As shown in fig. 4 and 5, the air guide assembly 6 comprises an air cavity 61 and two air passages 62 which are arranged in the driven shaft 3, the air cavity 61 penetrates through one end of the driven shaft 3, one end of the air pipe 51 stretches into an opening of the air cavity 61 and is fixedly sleeved with a sealing bearing 53, the sealing bearing 53 is fixedly embedded in the air cavity 61, and the air pipe 51, the sealing bearing 53 and the driven shaft 3 are coaxially arranged, so that the sealing connection between the air pipe 51 and the air cavity 61 is realized; the air flue 62 corresponds with the gasbag 4 one by one, and the one end of air flue 62 communicates in air cavity 61, and the other end of air flue 62 runs through in the lateral wall of driven shaft 3 and communicates in gasbag 4 for the gas in the gas tank 5 accessible trachea 51, air cavity 61, air flue 62 exchange with the gas in the gasbag 4, and the inside of driven shaft 3 is located to air guide subassembly 6, thereby has avoided air guide subassembly 6's damage as far as possible, and has alleviateed driven shaft 3's weight.
One of the air bags 4 is provided with a blocking component 8, the blocking component 8 comprises a connecting hose 81 communicated with the two air bags 4 and a one-way valve 82 arranged in one air passage 62, a sealing disc 83 is embedded in the connecting hose 81, and part of the side wall of the sealing disc 83 is fixed on the inner wall of the connecting hose 81.
When the air tank 5 is used for air inflow into the air cavity 61 through the air pipe 51, the air in the air cavity 61 cannot enter the corresponding air bag 4 through the air passage 62 provided with the one-way valve 82 because the one-way valve 82 blocks the air passage 62 from air inflow into the corresponding air bag 4, and at the moment, the air in the air cavity 61 enters the corresponding air bag 4 through the other air passage 62, so that the expansion of the single air bag 4 is realized, and the vibration exciter can vibrate along a linear track.
When the single air bag 4 is inflated to the critical point, the connecting hose 81 will also be inflated, at this time, the inner diameter of the connecting hose 81 will be enlarged, and the portion of the sealing disc 83 which is not connected with the inner wall of the connecting hose 81 will form a gap with the inner wall of the connecting hose 81, so that the air bag 4 inflated to the critical point can be inflated into the other air bag 4 through the gap, and inflation of the two air bags 4 is realized, so as to ensure that the vibration exciter can vibrate along the elliptical track.
When the air box 5 extracts the air in the air cavity 61 through the air pipe 51, the air in the two air bags 4 enters the air cavity 61 through the corresponding air passages 62, so that the synchronous contraction of the two air bags 4 is realized, and the vibration exciter can vibrate along a circular track.
The two baffle rings 9 are fixedly embedded in the lantern ring 33, and the two baffle rings 9 are arranged at intervals with the driven shaft 3, so that friction between the baffle rings 9 and the driven shaft 3 is not easy to generate; the opposite sides of the two baffle rings 9 jointly enclose a clamping cavity 91, when the air bag 4 is inflated, the air bag 4 is clamped by the cavity wall of the clamping cavity 91, and the clamping cavity 91 realizes the shaping of the inflated air bag 4 so as to ensure that the inflated air bag 4 can be accurately abutted against the inner wall of the lantern ring 33; and the friction area of the air bag 4 is increased by the clamping cavity 91, so that the lantern ring 33 is not easy to slip on the air bag 4, and the driven shaft 3 can normally drive the second eccentric block 32 to rotate.
The inner wall of the collar 33 is provided with an embedded ring groove 35, and when the air bag 4 is inflated to be tightly abutted against the inner wall of the collar 33, the air bag 4 is partially embedded into the embedded ring groove 35, so that the friction area of the air bag 4 is further increased.
The outer wall of the air bag 4 is provided with a convex rib 41, the groove wall embedded with the annular groove 35 is provided with a clamping groove 36, and the convex rib 41 corresponds to the clamping groove 36. After the air bag 4 is inflated, the inflated air bag 4 is partially embedded into the embedded annular groove 35, the convex rib 41 is clamped in the clamping groove 36, and the clamping fixation of the air bag 4 and the lantern ring 33 is realized, so that the driven shaft 3 can drive the second eccentric block 32 to stably rotate through the clamping fit of the air bag 4 and the lantern ring 33.
It should be noted that, since the number of rotations of the driven shaft 3 is not necessarily an integer, when the air bag 4 is inflated and embedded in the embedded ring groove 35, the rib 41 on the air bag 4 may not be accurately embedded in the clamping groove 36; when the driven shaft 3 rotates, the driven shaft 3 drives the air bag 4 to synchronously rotate, the air bag 4 drives the second eccentric block 32 to rotate through the collar 33, the collar 33 slides relative to the air bag 4 until the convex rib 41 just slides and is clamped into the clamping groove 36, and at the moment, the driven shaft 3 normally drives the second eccentric block 32 to rotate; moreover, the worker can control the setting position of the clamping groove 36, so that the first eccentric block 22 and the second eccentric block 32 just maintain the designated relative positions when the convex edge 41 is clamped into the clamping groove 36, thereby ensuring the accuracy of adjusting the vibration track of the vibration exciter.
It should be noted that, since the pitch of the screw 71 is fixed, the feeding amount of the push plate 52 is fixed for each rotation of the screw 71; because the size of the air box 5 is fixed, the air quantity pushed by the push plate 52 during each feeding is fixed, a worker only needs to calculate in advance how many turns of the screw rod 71 rotate to enable one air bag 4 or two air bags 4 to be inflated to a critical point, and in the subsequent process, the worker only needs to rotate the screw rod 71 for a specified turn number to adjust the vibration track of the vibration exciter.
Compared with the prior art, the relative positions of the two gears do not need to be accurately ensured, so that the two gears can be mutually and accurately meshed, and the two gears are always in a meshed state and are not separated in the meshing process; the adjustment of the vibration track of the vibration exciter can be realized by only rotating the worm 74, and no additional alignment and locking operation is needed; in addition, the vibration track can be switched when the vibration exciter is used, and the machine is not required to be stopped, so that the vibration track adjusting efficiency of the vibration exciter is further improved.
The implementation principle of the square swinging screen vibration exciter device provided by the embodiment of the application is as follows: when the worker rotates the worm 74, the worm 74 drives the screw rod 71 to rotate through the worm wheel 73, the screw rod 71 drives the push plate 52 to slide in the air box 5 through the screw cylinder 72, the push plate 52 pushes air in the air box 5 into the air bag 4 through the air pipe 51, the air cavity 61 and the air channel 62 or pulls air in the air bag 4 out through the air pipe 51, the air cavity 61 and the air channel 62, and the air bag 4 expands or contracts.
When the air box 5 draws out the air in the air cavity 61 through the air pipe 51, the air in one air bag 4 enters the air cavity 61 through the corresponding air passage 62, the air in the two air bags 4 enters the air cavity 61 through the one-way valve 82 and the corresponding air passage 62, synchronous contraction of the two air bags 4 is achieved, and the air bags 4 are arranged at intervals with the lantern ring 33. When the driving shaft 2 drives the first eccentric block 22 to rotate synchronously, the driving shaft 2 drives the driven shaft 3 to rotate through the meshing of the driving gear 21 and the driven gear 31, the driven shaft 3 cannot drive the two second eccentric blocks 32 to rotate synchronously due to the arrangement of the rotating bearing 34, so that the second eccentric blocks 32 cannot provide centrifugal force at this moment, and the centrifugal force generated by the first eccentric block 22 during rotation causes the vibration exciter to vibrate along a circular track.
When the air tank 5 is used for introducing air into the air cavity 61 through the air pipe 51, the air in the air cavity 61 cannot enter the corresponding air bag 4 through the air passage 62 provided with the one-way valve 82 because the one-way valve 82 blocks the air passage 62 from introducing air into the corresponding air bag 4, and at the moment, the air in the air cavity 61 enters the corresponding air bag 4 through the other air passage 62, so that the expansion of the single air bag 4 is realized; the air bag 4 is inflated and embedded into the embedded ring groove 35, the convex rib 41 is clamped in the clamping groove 36, at the moment, only one second eccentric block 32 rotates, and the centrifugal force generated by the second eccentric block 32 during rotation is partially counteracted with the centrifugal force generated by the first eccentric block 22 during rotation, so that the vibration exciter vibrates along a linear track.
When the single air bag 4 is inflated to the critical point, the connecting hose 81 will also be inflated, at this time, the inner diameter of the connecting hose 81 will be enlarged, the part of the sealing disc 83 which is not connected with the inner wall of the connecting hose 81 will form a gap with the inner wall of the connecting hose 81, so that the air bag 4 inflated to the critical point can enter the other air bag 4 through the gap, the inflation of the two air bags 4 is realized, at this time, the two second eccentric blocks 32 are rotated, and the centrifugal force generated by the two second eccentric blocks 32 during rotation is greater than the centrifugal force generated by the first eccentric block 22 during rotation, so the vibration exciter will vibrate along the elliptical track.
In summary, the vibration track of the vibration exciter can be adjusted in the use process by rotating the worm 74, so that the operation is convenient, and the adjustment efficiency of the vibration track of the vibration exciter is improved; moreover, the driving gear 21 and the driven gear 31 in the present application are always in the engaged state, thereby improving the problem that the vibration exciter cannot be accurately adjusted.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. The utility model provides a square sieve vibration exciter device that sways, includes casing (1), is equipped with driving shaft (2) and driven shaft (3) that are parallel to each other in casing (1), and driving shaft (2) rotate around self axis and connect in casing (1), and driven shaft (3) rotate around self axis and connect in casing (1), its characterized in that: a driving gear (21) is fixedly sleeved on the driving shaft (2), a driven gear (31) is fixedly sleeved on the driven shaft (3), and the driving gear (21) is meshed with the driven gear (31);
the driving shaft (2) is provided with a first eccentric block (22), the driven shaft (3) is provided with two second eccentric blocks (32) which are sequentially arranged along the axis of the driven shaft (3), the second eccentric blocks (32) are provided with a lantern ring (33) which is rotationally connected with the driven shaft (3) around the axis of the driven shaft (3), and the driven shaft (3) is rotationally arranged on the inner side of the lantern ring (33) in a penetrating way;
the driven shaft (3) is fixedly sleeved with two annular air bags (4), the air bags (4) are in one-to-one correspondence with the lantern rings (33) and are positioned on the inner sides of the lantern rings (33), the two air bags (4) are connected with the same group of control mechanisms, the control mechanisms can inflate the air bags (4) and can exhaust air from the air bags (4), and when the control mechanisms inflate the air bags (4), the inflated air bags (4) can be abutted against the inner walls of the lantern rings (33);
the outer wall of the air bag (4) is provided with a convex rib (41), and the inner wall of the lantern ring (33) is provided with a clamping groove (36) for clamping the convex rib (41).
2. A square-shaped rocking screen vibration exciter apparatus according to claim 1, wherein: the control mechanism comprises an air box (5) arranged on the shell (1), a push plate (52) which is embedded in the air box (5) in a sliding manner, and a driving assembly (7) which is used for driving the push plate (52) to slide in the air box (5), wherein an air pipe (51) is communicated with the air box (5), the air pipe (51) is communicated with the two air bags (4) through the air guide assembly (6), the air pipe (51) is rotationally connected with the air guide assembly (6) around the axis of the driven shaft (3), and a blocking assembly (8) which is used for blocking the air guide assembly (6) to air in the air guide assembly is arranged on one air bag (4).
3. A square-shaped rocking screen vibration exciter apparatus according to claim 2, wherein: the driving assembly (7) comprises a screw rod (71) which is rotatably connected to the air box (5) around the axis of the screw rod and a screw cylinder (72) which is arranged on the push plate (52), the length directions of the screw rod (71) and the screw cylinder (72) are the same as the sliding direction of the push plate (52) in the air box (5), one end of the screw rod (71) is in threaded fit with the screw cylinder (72), and the other end of the screw rod (71) is positioned outside the air box (5).
4. A square-shaped rocking screen vibration exciter apparatus according to claim 3, wherein: one end of the screw rod (71) extending to the outer side of the air box (5) is fixedly sleeved with a worm wheel (73), a worm (74) is meshed with the worm wheel (73), and the worm (74) is rotatably connected to the air box (5) around the axis of the screw rod.
5. A square-shaped rocking screen vibration exciter apparatus according to claim 2, wherein: the air guide assembly (6) comprises an air cavity (61) and two air passages (62) which are arranged in the driven shaft (3), the air cavity (61) penetrates through one end of the driven shaft (3), one end of the air pipe (51) stretches into an opening of the air cavity (61) and is fixedly sleeved with a sealing bearing (53), the sealing bearing (53) is fixedly embedded in the air cavity (61), and the air pipe (51), the sealing bearing (53) and the driven shaft (3) are coaxially arranged; the air passages (62) are in one-to-one correspondence with the air bags (4), one end of each air passage (62) is communicated with the air cavity (61), and the other end of each air passage (62) penetrates through the side wall of the driven shaft (3) and is communicated with the air bag (4).
6. The square-shaped rocking screen vibration exciter apparatus of claim 5, wherein: the blocking component (8) comprises a connecting hose (81) communicated with the two air bags (4) and a one-way valve (82) arranged in one air passage (62), a sealing disc (83) is embedded in the connecting hose (81), part of the side wall of the sealing disc (83) is fixed on the inner wall of the connecting hose (81), and the one-way valve (82) is used for blocking the air passage (62) to enter the corresponding air bag (4).
7. A square-shaped rocking screen vibration exciter apparatus according to claim 1, wherein: the sleeve ring (33) is internally fixedly embedded with two baffle rings (9), the two baffle rings (9) are arranged at intervals with the driven shaft (3), and the opposite sides of the two baffle rings (9) jointly enclose a clamping cavity (91) for clamping the expansion air bag (4).
8. A square-shaped rocking screen vibration exciter apparatus according to claim 1, wherein: an embedded ring groove (35) for embedding the inflatable air bag (4) is arranged on the inner wall of the lantern ring (33).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310360397.4A CN116099753B (en) | 2023-04-06 | 2023-04-06 | Square swing screen vibration exciter device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310360397.4A CN116099753B (en) | 2023-04-06 | 2023-04-06 | Square swing screen vibration exciter device |
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| CN116099753A true CN116099753A (en) | 2023-05-12 |
| CN116099753B CN116099753B (en) | 2023-07-07 |
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| CN202310360397.4A Active CN116099753B (en) | 2023-04-06 | 2023-04-06 | Square swing screen vibration exciter device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118635106A (en) * | 2024-08-14 | 2024-09-13 | 新乡市伟良筛分机械有限公司 | Swinging screen with automatic top frame mechanism |
| CN118635106B (en) * | 2024-08-14 | 2024-10-25 | 新乡市伟良筛分机械有限公司 | Swinging screen with automatic top frame mechanism |
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| CN118635106B (en) * | 2024-08-14 | 2024-10-25 | 新乡市伟良筛分机械有限公司 | Swinging screen with automatic top frame mechanism |
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|---|---|
| CN116099753B (en) | 2023-07-07 |
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