CN116607780B - Concrete vibrator with adjustable vibration and use method - Google Patents
Concrete vibrator with adjustable vibration and use method Download PDFInfo
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- CN116607780B CN116607780B CN202310878358.3A CN202310878358A CN116607780B CN 116607780 B CN116607780 B CN 116607780B CN 202310878358 A CN202310878358 A CN 202310878358A CN 116607780 B CN116607780 B CN 116607780B
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000017525 heat dissipation Effects 0.000 claims description 2
- 230000008093 supporting effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/08—Internal vibrators, e.g. needle vibrators
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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
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The application relates to the technical field of concrete vibrators, in particular to a concrete vibrator with adjustable vibration and a use method thereof, wherein the concrete vibrator comprises an outer sleeve, an eccentric shaft and a vibration adjusting mechanism; the eccentric shaft is rotationally arranged in the outer sleeve, a plurality of sliding eccentric parts are sleeved on the periphery of the eccentric shaft along the axial direction, a hollow channel is arranged on the eccentric shaft along the axial direction, a first sliding groove is arranged on the peripheral wall of the eccentric shaft, and the sliding eccentric parts are connected with a first sliding block which is in sliding fit with the first sliding groove; the vibration adjusting mechanism comprises a screw, a plurality of nut sleeves, a plurality of adjusting sleeves and two first unidirectional rotating bearings fixedly sleeved in the adjusting sleeves along the axial interval, wherein the stopping directions of the two first unidirectional rotating bearings are opposite, and the screw is arranged in a sliding and adjustable manner along the hollow channel, so that the nut sleeves are detachably connected with any one of the first unidirectional rotating bearings. The axial range covered by the vibrator in vibration can be adjusted by adjusting the axial position of the sliding eccentric part, and the exciting force can be adjusted, so that different requirements are met.
Description
Technical Field
The application relates to the technical field of concrete vibrators, in particular to a concrete vibrator with adjustable vibration and a use method thereof.
Background
The concrete vibrator is also called a vibrating rod, which is a tool used in engineering construction, can enable concrete to be closely combined, eliminate phenomena of honeycomb pitting surface and the like of the concrete, and improve strength. The existing concrete vibrator is eccentric, the eccentric shaft inside the concrete vibrator is driven to rotate through the rotary driving device, so that the vibration effect is achieved, different requirements are met on the vibration effect of the concrete vibrator under different concrete pouring conditions, the vibration coverage range of the existing vibrator is constant, the exciting force is constant, the eccentric shaft is unstable to rotate, and looseness is easy to occur.
Disclosure of Invention
The application aims to provide a concrete vibrator with adjustable vibration and a use method thereof, which are used for solving one or more technical problems in the prior art and at least providing a beneficial selection or creation condition.
The technical scheme adopted for solving the technical problems is as follows:
the application provides a concrete vibrator with adjustable vibration, which comprises: an outer sleeve; the eccentric shaft is rotationally arranged in the outer sleeve, a plurality of sliding eccentric parts are sleeved on the periphery of the eccentric shaft along the axial direction, a hollow channel is arranged on the eccentric shaft along the axial direction, a plurality of groups of first sliding grooves (230) extending along the axial direction are formed in the peripheral wall of the eccentric shaft, each group of first sliding grooves (230) corresponds to the corresponding sliding eccentric parts (210) one by one, and the sliding eccentric parts are connected with first sliding blocks in sliding fit with the first sliding grooves; the vibration adjusting mechanism comprises a screw rod arranged in a hollow channel in a rotating mode, a plurality of nut sleeves sleeved on the screw rod, a plurality of adjusting sleeves sleeved in the hollow channel in an axial sliding mode, and two first unidirectional rotating bearings fixedly sleeved in the adjusting sleeves in an axial interval mode, wherein the first sliding blocks are fixedly connected with the peripheral wall of the adjusting sleeves, stopping directions of the two first unidirectional rotating bearings are opposite, the nut sleeves are arranged between the two first unidirectional rotating bearings, and the screw rod is arranged in a sliding adjustable mode along the hollow channel so that the nut sleeves are detachably connected with any one of the first unidirectional rotating bearings.
The beneficial effects of the application are as follows: when the axial position of the sliding eccentric part needs to be adjusted, the screw rod can be moved along the axial direction to enable the nut sleeve to be connected with the corresponding first unidirectional rotating bearing, then the nut sleeve can be moved along the hollow channel by the first sliding block and the first sliding groove under the screw thread transmission of the screw rod and the nut sleeve and the axial sliding fit of the first sliding block and the first sliding groove, meanwhile, the adjusting sleeve can be driven by the corresponding first unidirectional rotating bearing to move along the hollow channel, and meanwhile, the adjusting sleeve can be driven by the first sliding block to move along the eccentric shaft, and the nut sleeve is connected with one of the two first unidirectional rotating bearings according to the actual adjusting direction, because the stopping directions of the two first unidirectional rotating bearings are opposite, the nut sleeve can provide a directional torsion force for the adjusting sleeve through the first unidirectional rotating bearing, the adjusting sleeve can only realize axial movement under the circumferential limit of the first sliding block, and further can react with the nut sleeve, so that the nut sleeve moves axially in one direction under the rotation of the nut sleeve relative to the screw, namely, two first unidirectional rotating bearings correspond to two axial directions, and after the axial position of the sliding eccentric part is adjusted, the nut sleeve is kept connected with one of the first unidirectional rotating bearings, the stop direction of the first unidirectional rotating bearing is opposite to the rotating direction of the eccentric shaft during operation, and further, when the vibrator operates, the eccentric shaft rotates under the driving of an external rotating driving device, under the supporting effect of the first unidirectional rotating bearing, the rotation of the eccentric shaft is not interfered, and secondly, each group of nut sleeve, the first unidirectional rotating bearings and the adjusting sleeve form a supporting point, and a plurality of supporting points can enable the rotation of the eccentric shaft to be more stable, avoiding the phenomenon of loosening and tilting. The axial range that the vibrator vibration covered can be adjusted through adjusting the axial position of the sliding eccentric part to the technology, and exciting force can also be adjusted, so that different requirements are met.
As a further improvement of the technical scheme, the two ends of the eccentric shaft are rotatably arranged in the outer sleeve, the middle part between the two ends of the eccentric shaft is fixedly sleeved with the fixed eccentric block, two sides of the fixed eccentric block are respectively provided with one sliding eccentric piece, the screw threads on the two sides of the fixed eccentric block are oppositely arranged in rotation direction, the corresponding two first unidirectional rotating bearings on the two sliding eccentric pieces are horizontally arranged, namely, the stopping directions of the two first unidirectional rotating bearings on the same axial side are the same, only the screw threads on the corresponding screw rods are oppositely rotated, and therefore, when the screw rod is rotated in one direction, the two sliding eccentric pieces can be mutually close to or far away from each other.
In order to enable rotation of the eccentric shaft to be more stable, the eccentric parts on the eccentric shaft are symmetrically arranged, namely, a fixed eccentric block is arranged in the middle between two ends of the eccentric shaft, the left side and the right side of the fixed eccentric block are respectively provided with the sliding eccentric parts, the screw is only used for adjusting the sliding eccentric parts on two sides, and two symmetrical supporting points can be realized for supporting the eccentric shaft.
As a further improvement of the technical scheme, the first unidirectional rotating bearing comprises an outer ring fixed with the adjusting sleeve and an inner ring sleeved in the outer ring, wherein the opposite end surfaces of the two inner rings in the adjusting sleeve (330) are respectively provided with a first clamping part, the two ends of the nut sleeve are respectively provided with a second clamping part, and the second clamping parts and the first clamping parts can be axially clamped and connected.
The nut sleeve in this scheme comes the first block portion block with the inner circle through the second block portion to realize transmission connection, wherein there are multiple modes of second block portion and first block portion block, for example can adopt rotatory block's connected mode, or direct draw-in groove and buckle block's mode, in order to improve the stability that the block is connected, still be provided with the magnetic subassembly between first block portion and second block portion, the magnetic subassembly is including two magnetism pieces that the opposite side is inhaled, two magnetism pieces set up respectively on second block portion and first block portion, this embodiment just adopts draw-in groove and buckle matching block's mode, when separating second block portion and first block portion, only need hard with second block portion and first block portion can, easy operation.
As a further improvement of the technical scheme, the first sliding block and the sliding eccentric are provided with a second unidirectional rotating bearing, the inner peripheral wall of the outer sleeve is provided with a stop block, one end face of the sliding eccentric is provided with a brake bayonet, the brake bayonet can be clamped with the stop block along the axial direction so as to lock and fix relative rotation between the sliding eccentric and the outer sleeve, the outer periphery of the eccentric shaft is provided with a second sliding groove along the axial direction, one end part of the second sliding groove is connected with an annular rotating groove arranged around the outer periphery of the eccentric shaft, and the sliding eccentric is connected with a second sliding block which is in sliding fit with the second sliding groove and the annular rotating groove.
The second unidirectional rotating bearing is further arranged to realize the relative rotation and the relative fixation between the first sliding block and the sliding eccentric part, the stop direction of the second unidirectional rotating bearing is opposite to the running rotation direction of the eccentric shaft, when the axial position of the sliding eccentric part is regulated, the second sliding block axially moves along the second sliding groove and guides the axial movement of the sliding eccentric part so as to fix the relative rotation between the sliding eccentric part and the eccentric shaft, when the second sliding block moves to the end part of the second sliding groove and enters the annular rotating groove, the sliding eccentric part and the eccentric shaft can relatively rotate at the moment, meanwhile, the brake bayonet is clamped with the stop block, the relative rotation between the sliding eccentric part and the outer sleeve is locked and fixed, and when the eccentric shaft rotates and is released in a unidirectional rotation mode, the eccentric shaft does not rotate along with the eccentric shaft, that is, the eccentric shaft only drives the fixed eccentric block to rotate at the moment, so that exciting force can be reduced, and when small range and exciting force are required, the state can be regulated.
As a further improvement of the technical scheme, one end of the eccentric shaft is connected with a transmission joint, the other end of the eccentric shaft is provided with an opening communicated with the hollow channel, and the screw rod penetrates through the opening and then is connected with an end cover sleeved on the port of the outer sleeve.
According to the scheme, when the adjusting screw moves axially, the screw can be pulled through the end cover, and when moving and adjusting, after one second clamping part is separated from the first clamping part on one side, the other second clamping part is clamped with the first clamping part on the other side.
As a further improvement of the technical scheme, one end of the screw, far away from the end cover, is connected with a limiting ring, and one end of the hollow channel, far away from the opening, is provided with a limiting step which is in interference with the limiting ring. The interference fit of the limiting ring and the limiting step avoids the overlong pulling out of the screw rod, and plays a limiting role.
As a further improvement of the technical scheme, the sliding eccentric part and the fixed eccentric block comprise sleeve joints sleeved on the eccentric shafts and eccentric convex parts eccentrically arranged with the sleeve joints.
As a further improvement of the technical scheme, the outer periphery of the outer sleeve is sleeved with noise reduction rubber barrels, and heat dissipation holes are uniformly distributed in the noise reduction rubber barrels.
As a further improvement of the technical scheme, the two ends of the eccentric shaft are sleeved with deep groove ball bearings, and the eccentric shaft is rotationally connected with the outer sleeve through the two deep groove ball bearings.
As a further improvement of the technical scheme, rubber pads are arranged on opposite end faces between the fixed eccentric block and the sliding eccentric piece.
In addition, the application also provides a using method suitable for the concrete vibrator, which comprises the following specific steps:
first adjustment direction: through moving the screw rod along the axial direction, one of the second clamping parts on the nut sleeve is clamped and connected with the first clamping part on one of the first unidirectional rotating bearings, then the screw rod is rotated, and the nut sleeve drives the adjusting sleeve to move through the first unidirectional rotating bearing so as to drive the sliding eccentric part to move along one direction;
second adjustment direction: the screw is reversely moved, the other second clamping part on the nut sleeve is in clamping connection with the first clamping part on the other first unidirectional rotating bearing, and the screw is reversely rotated to drive the sliding eccentric part to move along the other direction;
after the adjustment, the screw rod moving nut is sleeved to the first unidirectional rotating bearing with the stopping direction opposite to the running direction of the eccentric shaft to be clamped.
Drawings
The application is further described below with reference to the drawings and examples;
FIG. 1 is a cross-sectional view of one embodiment of a concrete vibrator provided by the present application;
FIG. 2 is an enlarged partial view of portion A of FIG. 1, wherein the nut housing is engaged with one of the first one-way rotational bearings;
fig. 3 is a schematic view of the engagement of the nut housing with another first one-way rotational bearing.
Detailed Description
Reference will now be made in detail to the present embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present application, but not to limit the scope of the present application.
In the description of the present application, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
In the description of the present application, if there is a word description such as "a plurality" or the like, the meaning of a plurality is one or more, and the meaning of a plurality is two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number.
In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 3, the vibration-adjustable concrete vibrator of the present application makes the following embodiments:
the concrete vibrator of the present embodiment includes an outer sleeve 100, an eccentric shaft 200, and a vibration adjusting mechanism 300.
The outer sleeve 100 is of a hollow tube structure, the eccentric shaft 200 is rotatably arranged in the outer sleeve 100, two ends of the eccentric shaft 200 are provided with deep groove ball bearings 400, and the eccentric shaft 200 is arranged in the outer sleeve 100 through the two deep groove ball bearings 400.
The outer periphery of the outer sleeve 100 of this embodiment is equipped with the noise reduction rubber cylinder 110, noise reduction rubber cylinder 110 equipartition has a plurality of louvres 111, and outer sleeve 100 touches through noise reduction rubber cylinder 110 and the reinforcing bar of pouring, compares in current rigidity conflict, but noise reduction's production to still set up louvres 111 and improve radiating effect.
The outer circumference of the eccentric shaft 200 of the present embodiment is sleeved with a plurality of sliding eccentric members 210, and the sliding eccentric members 210 are arranged at intervals along the axial direction.
The eccentric shaft 200 is of a hollow structure, a hollow channel 220 is arranged on the eccentric shaft 200 along the axial direction, a plurality of groups of first sliding grooves (230) extending along the axial direction are arranged on the peripheral wall of the eccentric shaft 200, a plurality of first sliding grooves 230 are arranged on the sliding eccentric member 210 in an annular interval manner, that is to say, a plurality of groups of first sliding grooves 230 are arranged on the sliding eccentric member, each group corresponds to one sliding eccentric member 210, a plurality of groups of first sliding grooves 230 are arranged on the sliding eccentric member in an axial interval manner, first sliding blocks 211 are connected to the inner peripheral wall of the sliding eccentric member 210, the first sliding blocks 211 are also determined according to the number of the first sliding grooves 230, and the first sliding blocks 211 are in sliding fit with the first sliding grooves 230, so that the guiding of the axial movement of the sliding eccentric member 210 is realized, and the circumferential rotation of the sliding eccentric member 210 is fixed.
The vibration adjusting mechanism 300 of this embodiment includes a screw 310, a plurality of nut sleeves 320, and a plurality of adjusting sleeves 330, where the screw 310 is coaxially disposed in the hollow channel 220, the screw 310 can rotate relative to the eccentric shaft 200 and adjust along the axial movement, the nut sleeves 320, 330 are in one-to-one correspondence with the sliding eccentric members 210, the nut sleeves 320 are threaded on the screw 310, the adjusting sleeves 330 are axially slidably sleeved in the hollow channel 220, the first slider 211 is fixedly connected with the outer peripheral wall of the adjusting sleeve 330, two first unidirectional rotating bearings 340 are fixedly sleeved on the inner peripheral wall of the adjusting sleeve 330, the two first unidirectional rotating bearings 340 are arranged at intervals along the axial direction, the nut sleeves 320 are disposed between the two first unidirectional rotating bearings 340, and the stopping directions of the two first unidirectional rotating bearings 340 are opposite, so that the nut sleeves 320 are detachably connected with any one first unidirectional rotating bearing 340 when the screw 310 is slidably adjustable along the hollow channel 220.
When the axial position of the sliding eccentric 210 needs to be adjusted, the nut sleeve 320 is connected with one of the two corresponding first unidirectional rotating bearings 340 by moving the screw 310 along the axial direction, then by rotating the screw 310, under the screw transmission of the screw 310 and the nut sleeve 320, and the first sliding block 211 and the first sliding groove 230 along the axial sliding fit, the nut sleeve 320 moves along the axial direction relative to the screw 310, the nut sleeve 320 drives the adjusting sleeve 330 to move along the hollow channel 220 through the corresponding first unidirectional rotating bearing 340, meanwhile, the adjusting sleeve 330 drives the sliding eccentric 210 to move along the eccentric shaft 200 through the first sliding block 211, according to the actual adjusting direction, the nut sleeve 320 is connected with one of the two first unidirectional rotating bearings 340, because the two first unidirectional rotating bearings 340 are oppositely arranged in the stopping direction, the nut sleeve 320 can only realize axial movement under the circumferential limit of the first sliding block 211 at the moment through the first unidirectional rotating bearing 340, and further can react with the nut sleeve 320, so that the nut sleeve 320 rotates relative to the screw 310, the first unidirectional rotating bearing 340 is driven to rotate along the axial direction, and the two first unidirectional rotating bearings 340 are mutually interfered by the two unidirectional rotating bearings 200, and when the two unidirectional rotating bearings 200 rotate, the two unidirectional rotating bearings are mutually opposite to each other, and the two unidirectional rotating bearings are mutually opposite to rotate, and the two unidirectional rotating bearings are mutually opposite, and the axial rotating, and the axial direction is kept, and the axial direction is different, and the axial direction is different, and the direction, and the axial direction is different The first unidirectional rotation bearing 340 and the adjusting sleeve 330 both form a supporting point, and a plurality of supporting points can make the rotation of the eccentric shaft 200 more stable, so that the phenomenon of loosening and tilting is avoided. The present technique can adjust the axial range covered by the vibrator vibration by adjusting the axial position of the sliding eccentric 210, and can also adjust the exciting force, thus meeting different demands.
The middle part between two ends of the eccentric shaft 200 in this embodiment is fixedly sleeved with a fixed eccentric block 240, two sliding eccentric pieces 210 are provided, the two sliding eccentric pieces 210 are respectively disposed at two sides of the fixed eccentric block 240, the screw threads of the screw 310 at two sides of the fixed eccentric block 240 are disposed in opposite directions, the corresponding two first unidirectional rotating bearings 340 on the two sliding eccentric pieces 210 are arranged in a translational manner, that is, the stopping directions of the two first unidirectional rotating bearings 340 at the same axial side are the same, but the screw threads on the corresponding screw 310 are opposite in rotation direction, so that when the screw 310 is rotated in one direction, the two sliding eccentric pieces 210 can be moved close to or away from each other.
In order to make the rotation of the eccentric shaft 200 more stable, in this embodiment, the eccentric members on the eccentric shaft 200 are symmetrically arranged, that is, a fixed eccentric block 240 is arranged in the middle between two ends of the eccentric shaft 200, and two sliding eccentric members 210 are respectively arranged on the left side and the right side of the fixed eccentric block 240, the screw 310 only adjusts the sliding eccentric members 210 on two sides, and the screw 310 can realize two symmetrical supporting points to support the eccentric shaft 200.
The first unidirectional rotating bearing 340 includes an outer ring 341 fixed to the adjusting sleeve 330, and an inner ring 342 sleeved in the outer ring 341, wherein first engaging portions 343 are disposed on opposite end surfaces of two inner rings 342 in the adjusting sleeve 330, second engaging portions 321 are disposed at two ends of the nut sleeve 320, the second engaging portions 321 and the first engaging portions 343 can be axially engaged and connected, the nut sleeve 320 is engaged with the first engaging portions 343 of the inner rings 342 through the second engaging portions 321, so as to realize transmission connection, and multiple manners of engaging the second engaging portions 321 with the first engaging portions 343, such as a rotational engaging manner or a direct engaging manner with the engaging portions 343, are adopted, and in order to improve stability of the engaging connection, a magnetic attraction assembly is further disposed between the first engaging portions 343 and the second engaging portions 321, and the magnetic attraction assembly includes two magnetic attraction blocks that are respectively disposed on the second engaging portions 321 and the first engaging portions 343, so that the second engaging portions 321 and the first engaging portions 343 can be separated from each other in a simple manner when the engaging portions 321 are engaged with each other.
The axial direction between the outer race 341 and the inner race 342 is relatively fixed.
The first slider 211 and the sliding eccentric 210 are provided with a second unidirectional rotation bearing 250, the inner circumferential wall of the outer sleeve 100 is provided with a stopper 120, one end surface of the sliding eccentric 210 is provided with a stopper bayonet 212, the stopper bayonet 212 can be engaged with the stopper 120 along the axial direction so as to lock and fix the relative rotation between the sliding eccentric 210 and the outer sleeve 100, the outer circumference of the eccentric shaft 200 is provided with a second sliding groove 260 along the axial direction, one end of the second sliding groove 260 is connected with an annular rotation groove 270 arranged around the outer circumference of the eccentric shaft 200, and the sliding eccentric 210 is connected with a second slider 213 which is in sliding fit with the second sliding groove 260 and the annular rotation groove 270.
In this embodiment, a second unidirectional rotation bearing 250 is further provided to realize the relative rotation and the relative fixation between the first sliding block 211 and the sliding eccentric 210, the stopping direction of the second unidirectional rotation bearing 250 is opposite to the running rotation direction of the eccentric shaft 200, when the axial position of the sliding eccentric 210 is adjusted, the second sliding block 213 moves axially along the second sliding groove 260, and guides the axial movement of the sliding eccentric 210 to fix the relative rotation between the sliding eccentric 210 and the eccentric shaft 200, and when the second sliding block 213 moves to the end of the second sliding groove 260 and enters the annular rotation groove 270, the sliding eccentric 210 and the eccentric shaft 200 can rotate relatively at this time, and the braking bayonet 212 is engaged with the stopping block 120, so that the relative rotation between the sliding eccentric 210 and the outer sleeve 100 is locked and fixed, and when the eccentric shaft 200 rotates and rotates in a unidirectional rotation manner under the release of the second unidirectional rotation bearing 250, that is, the eccentric shaft 200 rotates along with the eccentric shaft 200, that is, the fixed eccentric block 240 is driven to rotate only at this time, thereby reducing the exciting force, and when a small range and a small exciting force is required, the state can be adjusted.
Further, one end of the eccentric shaft 200 is connected with the driving joint 280, the other end of the eccentric shaft 200 is provided with an opening 221 communicated with the hollow channel 220, the screw 310 passes through the opening 221 and is connected with an end cover 312 sleeved on the port of the outer sleeve 100, when the adjusting screw 310 moves axially, the screw 310 can be pulled by the end cover 312, and when moving and adjusting, after one of the second clamping parts 321 is separated from the first clamping part 343 on one side, the other second clamping part 321 is clamped with the first clamping part 343 on the other side.
And, a limit ring 311 is connected to the end of the screw 310 far away from the end cap 312, and a limit step 222 abutting against the limit ring 311 is provided at the end of the hollow channel 220 far away from the opening 221. The interference fit of the limiting ring 311 and the limiting step 222 prevents the screw 310 from being pulled out too much, thereby playing a limiting role.
Wherein, the sliding eccentric member 210 and the fixed eccentric block 240 each comprise a socket 290 sleeved on the eccentric shaft 200, and an eccentric protrusion 291 eccentrically arranged with the socket 290.
The opposite end surfaces between the fixed eccentric block 240 and the sliding eccentric 210 are provided with rubber pads 500, and the rubber pads 500 have a buffering effect when the sliding eccentric 210 is attached to the fixed eccentric block 240.
In addition, the application also provides a using method suitable for the concrete vibrator, which comprises the following specific steps:
first adjustment direction: by moving the screw 310 along the axial direction, one of the second engaging portions 321 on the nut sleeve 320 is engaged with the first engaging portion 343 on one of the first unidirectional rotating bearings 340, and then the screw 310 is rotated, and the nut sleeve 320 drives the adjusting sleeve 330 to move through the first unidirectional rotating bearing 340, so as to drive the sliding eccentric 210 to move along one of the directions;
second adjustment direction: the other second engaging portion 321 on the nut sleeve 320 is engaged with the first engaging portion 343 on the other first unidirectional rotating bearing 340 by moving the screw 310 in the opposite direction, and the screw 310 is rotated in the opposite direction to drive the sliding eccentric 210 to move in the other direction;
after the adjustment, the screw 310 moves the nut sleeve 320 to engage with the first one-way rotation bearing 340 having a stopping direction opposite to the running direction of the eccentric shaft 200.
While the preferred embodiment of the present application has been described in detail, the application is not limited to the embodiments, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the application, and these modifications and substitutions are intended to be included in the scope of the present application as defined in the appended claims.
Claims (9)
1. A concrete vibrator with adjustable vibration, characterized in that: it comprises the following steps:
an outer sleeve (100);
the eccentric shaft (200) is rotationally arranged in the outer sleeve (100), a plurality of sliding eccentric pieces (210) are sleeved on the periphery of the eccentric shaft (200) along the axial direction, a hollow channel (220) is formed in the eccentric shaft (200) along the axial direction, a plurality of groups of first sliding grooves (230) extending along the axial direction are formed in the peripheral wall of the eccentric shaft (200), each group of first sliding grooves (230) corresponds to the corresponding sliding eccentric pieces (210) one by one, and the sliding eccentric pieces (210) are connected with first sliding blocks (211) which are in sliding fit with the first sliding grooves (230);
the vibration adjusting mechanism (300) comprises a screw rod (310) arranged in a hollow channel (220), a plurality of nut sleeves (320) sleeved on the screw rod (310), a plurality of adjusting sleeves (330) sleeved in the hollow channel (220) in an axial sliding manner, and two first unidirectional rotating bearings (340) fixedly sleeved in the adjusting sleeves (330) at intervals along the axial direction, wherein the first sliding blocks (211) are fixedly connected with the peripheral wall of the adjusting sleeves (330), the stopping directions of the two first unidirectional rotating bearings (340) are opposite, the nut sleeves (320) are arranged between the two first unidirectional rotating bearings (340), and the screw rod (310) is arranged in a sliding and adjustable manner along the hollow channel (220) so that the nut sleeves (320) are detachably connected with any one of the first unidirectional rotating bearings (340);
the two ends of the eccentric shaft (200) are rotatably arranged in the outer sleeve (100), a fixed eccentric block (240) is fixedly sleeved in the middle between the two ends of the eccentric shaft (200), two sliding eccentric pieces (210) are arranged on two sides of the fixed eccentric block (240), and screw threads (310) positioned on two sides of the fixed eccentric block (240) are oppositely arranged in rotation directions;
the first unidirectional rotating bearing (340) comprises an outer ring (341) fixed with an adjusting sleeve (330), and an inner ring (342) sleeved in the outer ring (341), wherein two opposite end faces of the inner ring (342) in the adjusting sleeve (330) are respectively provided with a first clamping part (343), two ends of the nut sleeve (320) are respectively provided with a second clamping part (321), and the second clamping parts (321) and the first clamping parts (343) can be connected in an axial clamping mode.
2. A vibration-adjustable concrete vibrator according to claim 1, wherein:
the first sliding block (211) and the sliding eccentric (210) are provided with a second unidirectional rotating bearing (250), the inner peripheral wall of the outer sleeve (100) is provided with a stop block (120), one end face of the sliding eccentric (210) is provided with a brake bayonet (212), the brake bayonet (212) can be clamped with the stop block (120) along the axial direction so as to lock and fix the relative rotation of the sliding eccentric (210) and the outer sleeve (100), the outer periphery of the eccentric shaft (200) is provided with a second sliding groove (260) along the axial direction, one end part of the second sliding groove (260) is connected with an annular rotating groove (270) which is arranged around the outer periphery of the eccentric shaft (200), and the sliding eccentric (210) is connected with a second sliding block (213) which is in sliding fit with the second sliding groove (260) and the annular rotating groove (270).
3. A vibration-adjustable concrete vibrator according to claim 1, wherein:
one end of the eccentric shaft (200) is connected with a transmission joint (280), the other end of the eccentric shaft (200) is provided with an opening (221) communicated with the hollow channel (220), and the screw (310) penetrates through the opening (221) and then is connected with an end cover (312) sleeved on the port of the outer sleeve (100).
4. A vibration-adjustable concrete vibrator according to claim 3, wherein:
one end of the screw rod (310) far away from the end cover (312) is connected with a limiting ring (311), and one end of the hollow channel (220) far away from the open mouth (221) is provided with a limiting step (222) which is in interference with the limiting ring (311).
5. A vibration-adjustable concrete vibrator according to claim 1, wherein:
the sliding eccentric part (210) and the fixed eccentric block (240) comprise a sleeve joint (290) sleeved on the eccentric shaft (200) and an eccentric convex part (291) eccentrically arranged with the sleeve joint (290).
6. A vibration-adjustable concrete vibrator according to claim 1, wherein:
the outer periphery of the outer sleeve (100) is sleeved with noise reduction rubber barrels (110), and the noise reduction rubber barrels (110) are uniformly provided with heat dissipation holes (111).
7. A vibration-adjustable concrete vibrator according to claim 1, wherein:
the two ends of the eccentric shaft (200) are sleeved with deep groove ball bearings (400), and the eccentric shaft (200) is rotationally connected with the outer sleeve (100) through the two deep groove ball bearings (400).
8. A vibration-adjustable concrete vibrator according to claim 1, wherein:
rubber pads (500) are arranged on the opposite end surfaces between the fixed eccentric block (240) and the sliding eccentric piece (210).
9. A method of using a vibration-adjustable concrete vibrator according to any one of claims 1 to 8, characterized in that: the method comprises the following specific steps:
first adjustment direction: through moving the screw rod (310) along the axial direction, one of the second clamping parts (321) on the nut sleeve (320) is in clamping connection with the first clamping part (343) on one of the first unidirectional rotating bearings (340), then the screw rod (310) is rotated, and the nut sleeve (320) drives the adjusting sleeve (330) to move through the first unidirectional rotating bearing (340) so as to drive the sliding eccentric (210) to move along one of the directions;
second adjustment direction: the screw (310) is reversely moved, the other second clamping part (321) on the nut sleeve (320) is in clamping connection with the first clamping part (343) on the other first unidirectional rotating bearing (340), and the screw (310) is reversely rotated so as to drive the sliding eccentric (210) to move along the other direction;
after the adjustment, the screw (310) moves the nut sleeve (320) to be engaged with a first unidirectional rotation bearing (340) with a stop direction opposite to the running direction of the eccentric shaft (200).
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| CN202310878358.3A CN116607780B (en) | 2023-07-18 | 2023-07-18 | Concrete vibrator with adjustable vibration and use method |
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| CN114592692A (en) * | 2020-12-07 | 2022-06-07 | 重庆坝力克科技有限公司 | Airborne hard rod structure of hydraulic vibrating rod |
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| DE1922764A1 (en) * | 1968-05-06 | 1969-11-27 | Koehring Co | Diving shaker for concrete |
| US4428678A (en) * | 1982-09-30 | 1984-01-31 | Lyle John S | Concrete vibrator |
| CN102441873A (en) * | 2010-10-01 | 2012-05-09 | 苏州宝时得电动工具有限公司 | Swinging power tool |
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|---|---|
| CN116607780A (en) | 2023-08-18 |
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