CN209476646U - Adjustable eccentric away from eccentric block component, vibration excitor and vibrating screen - Google Patents
Adjustable eccentric away from eccentric block component, vibration excitor and vibrating screen Download PDFInfo
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- CN209476646U CN209476646U CN201822192480.2U CN201822192480U CN209476646U CN 209476646 U CN209476646 U CN 209476646U CN 201822192480 U CN201822192480 U CN 201822192480U CN 209476646 U CN209476646 U CN 209476646U
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Abstract
The utility model is suitable for petroleum drilling technology field, provide a kind of adjustable eccentric away from eccentric block component, vibration excitor and vibrating screen.Adjustable eccentric away from eccentric block component include the first eccentric block, the second eccentric block and driving mechanism, the weight ratio range of first eccentric block and the second eccentric block is 0.8-1.2, driving mechanism includes arc groove and pin, arc groove has first end and the second end relative to first end, eccentricity with relative maximum when pin is located at first end, with relatively minimal eccentricity when pin is located at second end.Vibration excitor include adjustable eccentric away from eccentric block component.Vibrating screen includes vibration excitor.Adjustable eccentric provided by the utility model away from eccentric block component, vibration excitor and vibrating screen keep the driving of the first eccentric block and the second eccentric block more stable, inertia is more nearly, reduce adjustable eccentric provided by the embodiment of the utility model away from eccentric block component to excessively high processing, cooperate precision requirement, avoid the problem that frequently repairing.
Description
Technical field
The utility model belongs to petroleum drilling technology field, more specifically, be related to a kind of adjustable eccentric away from bias
Block assembly, vibration excitor and vibrating screen.
Background technique
The patent document of Patent No. CN201020626678.8 provides a kind of double-track vibrating screen, it is merely with two
Vibrating motor, so that it may realize sieve basket dual trace vibration.This double-track vibrating screen includes first motor and the second motor, and first
The output shaft nesting pre-eccentric block assembly of motor, eccentric block component after the output shaft of the second motor is nested, pre-eccentric block assembly are
Adjustable eccentric away from eccentric block component.Referring to Figure 1 and Fig. 2, pre-eccentric block assembly include that fixed eccentric block and activity are eccentric again
Block, wherein movable eccentric block accounts for the 1/4 of pre-eccentric block assembly gross weight, movable eccentric block is pushed by fixed eccentric block and is rotated.
But there are some problems in above-mentioned pre-eccentric block assembly in practical applications: movable eccentric block and fixed eccentric block
Mass difference great disparity, inertia also differ greatly, not high or in the case where through wearing after a period of time in the accuracy of manufacture, if work
The revolution axis hole of dynamic eccentric block and motor output shaft gap are more than some numerical value or its play gap is more than a certain number
Value, due to the side-sway that complete machine is micro, causes movable eccentric block cannot be relative to fixed inclined in pre-eccentric block assembly rotary course
Heart block is fixed on setting position, but is gradually deviated from the position of setting, i.e., the phase between movable eccentric block and fixed eccentric block
Potential difference (angle) is gradually increased, this will affect vibrating effect.Therefore pre-eccentric block assembly in the prior art has the accuracy of manufacture
Very high requirement, and need often maintenance replacement.
Utility model content
The purpose of this utility model is to provide a kind of adjustable eccentric away from eccentric block component, it is intended to solve in the prior art
Adjustable eccentric away from eccentric block component existing for it is excessively high to requirement on machining accuracy and need frequently maintenance the technical issues of.
In order to achieve the above purposes, the technical solution adopted by the utility model is: provide a kind of adjustable eccentric away from eccentric block
Component, including for the first fixed eccentric block nested with motor output shaft, second for being rotatedly connected with motor output shaft
Eccentric block and driving mechanism, first eccentric block and second eccentric block are sectorial block, first eccentric block and
Revolution axis hole is equipped on second eccentric block, first eccentric block drives second bias by the driving mechanism
Block is rotated relative to motor output shaft, and the weight ratio range of first eccentric block and second eccentric block is 0.8-1.2, and
Setting before and after first eccentric block and second eccentric block, the driving mechanism include being arranged on first eccentric block
Or arc groove on second eccentric block and be inserted into the arc groove and can in the pin of arc groove sliding,
The arc core of the arc groove is overlapped with the center of circle of the revolution axis hole, and the pin and second eccentric block or described first are partially
Heart block is connected；The arc groove has first end and the second end relative to the first end, and the pin is located at described first
When end the adjustable eccentric away from eccentric block component there is the eccentricity of relative maximum, the pin is located at second end when institute
State adjustable eccentric away from eccentric block component have relatively minimal eccentricity；
The driving mechanism changes first eccentric block and described by the sliding of the relatively described arc groove of the pin
The relative position of second eccentric block, then change adjustable eccentric away from eccentric block component eccentricity.
Further, the fan-shaped radius and corresponding fan-shaped central angle phase of first eccentric block and second eccentric block
Together.
Further, the first eccentric block described in when the pin is located at the first end is overlapped with second eccentric block.
Further, the driving mechanism further includes being set on first eccentric block for abutting driving described second
The pressing plate of eccentric block, when the pin is located at the first end, the pressing plate is abutted with second eccentric block.
Further, first eccentric block is equal with second eccentric block quality.
Further, the arc groove is arranged on first eccentric block, the pin and the second eccentric block phase
Even.
Further, first eccentric block and second eccentric block are semicircle sectorial block.
The another object of the utility model is to provide a kind of vibration excitor, including the installation of first motor, the second motor, motor
Plate, non-adjustable eccentricity eccentric block component and above-mentioned adjustable eccentric away from eccentric block component, the first motor and described
Second motor is installed on the motor mounting plate, and the non-adjustable eccentricity eccentric block component is defeated with the first motor
Shaft is connected by power, which is characterized in that the adjustable eccentric away from eccentric block component and second motor outputting axial power
Connection, first eccentric block is nested with the output shaft of second motor to be fixed, second eccentric block and second electricity
The output shaft of machine is rotatablely connected.
A further object of the utility model is to provide a kind of vibrating screen, including screen box, pedestal, isolator and above-mentioned swashs
Shake device, and the screen box is connected by isolator with the pedestal, and the motor mounting plate is mounted on the screen box.
Further, the motor mounting plate is obliquely installed horizontal by 0-35 °.
A kind of adjustable eccentric provided by the utility model away from eccentric block component, vibration excitor and vibrating screen and prior art phase
Than, by the way that the first eccentric block and the second eccentric block are designed as the approximate sectorial block of weight ratio, and it is total by pin and arc groove
Same-action is connected by power the first eccentric block and the second eccentric block, keeps the driving of the first eccentric block and the second eccentric block more steady
Fixed, inertia is more nearly, thus adjustable eccentric provided by the embodiment of the utility model away from eccentric block component rotate stablizing
In work, it is able to maintain the second eccentric block in the predeterminated position relative to the first eccentric block, reduces the utility model embodiment
The adjustable eccentric of offer away from eccentric block component to excessively high processing, cooperate precision requirement, avoid the problem that frequently repairing.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 vibrates schematic diagram when 50% state of resultant force for pre-eccentric block assembly in the prior art；
Fig. 2 vibrates schematic diagram when 100% state of resultant force for pre-eccentric block assembly in the prior art；
Fig. 3 be adjustable eccentric provided by the embodiment of the utility model away from eccentric block component have maximum eccentricity state when
Schematic diagram；
Fig. 4 is the top view of Fig. 3；
Fig. 5 is the A of Fig. 3 to cross-sectional view；
Fig. 6 be adjustable eccentric provided by the embodiment of the utility model away from eccentric block component there is minimum eccentricity state when
Schematic diagram.
Wherein, each appended drawing reference in figure:
The first eccentric block of 1-；The second eccentric block of 2-；3- arc groove；4- pin；5- pressing plate；6- wear-resistant pad；7- holding screw；
8- motor output shaft；9- fixed eccentric block；10- activity eccentric block.
Specific embodiment
In order to which technical problem to be solved in the utility model, technical solution and beneficial effect is more clearly understood, with
Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
It should be noted that term " on ", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outside" etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model
It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation structure
It makes and operates, therefore should not be understood as limiting the present invention.
It should also be noted that, unless otherwise clearly defined and limited, " installation ", " connected ", " connection ", " fixation ",
Terms such as " settings " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be with
It is mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside a element.For the ordinary skill in the art, Ke Yigen
The concrete meaning of above-mentioned term in the present invention is understood according to concrete condition.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features." multiple ", " several " are meant that two in the description of the present invention,
Or it is more than two, unless otherwise specifically defined.
Refer to Fig. 3 to Fig. 6, now to adjustable eccentric provided by the utility model away from eccentric block component embodiment carry out
Explanation.Adjustable eccentric away from eccentric block component, including for the first fixed eccentric block 1 nested with motor output shaft 8, for
The second eccentric block 2 and driving mechanism that motor output shaft 8 is rotatedly connected.First eccentric block 1 and the second eccentric block 2 are sector
Revolution axis hole is equipped on block, the first eccentric block 1 and the second eccentric block 2, the first eccentric block 1 and the second eccentric block 2 are all by each
From revolution axis hole be nested in the periphery of motor output shaft 8, unlike the first eccentric block 1 be connected with motor output shaft 8, first
Eccentric block 1 is driven by motor output shaft 8, and the second eccentric block 2 can then be rotated around motor output shaft 8.
The weight difference of first eccentric block 1 and the second eccentric block 2 is not many, the weight of the first eccentric block 1 and the second eccentric block 2
It is 0.8-1.2 than range, the first eccentric block 1 drives the second eccentric block 2 relative to (surrounding) motor output shaft 8 by driving mechanism
Rotation, while this driving mechanism can also make the second eccentric block 2 rotate (displacement) relative to the first eccentric block 1.
It is arranged before and after first eccentric block 1 and the second eccentric block 2, driving mechanism includes arc groove 3 and is inserted into arc
And it can be in the pin 4 of arc groove sliding in slot.If arc groove 3 is arranged on the first eccentric block 1, pin 4 is just arranged
On the second eccentric block 2；If arc groove 3 is arranged on the second eccentric block 2, pin 4 is just arranged in the first eccentric block 1
On.The arc core of arc groove 3 is overlapped with the center of circle of the first eccentric block 1 or the revolution axis hole of the second eccentric block 2, i.e. motor output shaft
The arc core of arc groove 3 is passed straight through where rotating shaft.
Arc groove 3 be it is closed, tool is there are two closed end, i.e. first end and the second end relative to the first end.
When first eccentric block, 1 the second eccentric block of normal driving 2 rotates, pin 4 or first end in arc groove 3 or it is in arc
The second end of shape slot 3.Pin 4 is in first end and pin 4 is in second end, and the first eccentric block 1 drives the rotation of the second eccentric block 2
Turn contrary.
The relative position of first eccentric block 1 and the second eccentric block 2 can change, sliding of the pin 4 in arc groove 3
Range also just determines the range of the relative position variation of the first eccentric block 1 and the second eccentric block 2.First eccentric block 1 and second
Eccentric block 2 be in different relative positions when, adjustable eccentric provided by the embodiment of the utility model away from eccentric block component phase
Center for turning round axis hole is also likely to have different eccentricities.
In the range of the relative position of the first eccentric block 1 and the second eccentric block 2 determined by arc groove 3 changes: when the
When one eccentric block 1 makes pin 4 be located at the first end of arc groove 3 relative to the position of the second eccentric block 2, then this is practical new at this time
Type embodiment provide adjustable eccentric away from eccentric block component have relative maximum eccentricity；When the first eccentric block 1 relative to
When the position of second eccentric block 2 makes pin 4 be located at the second end of arc groove 3, then provided by the embodiment of the utility model at this time
Adjustable eccentric away from eccentric block component there is relatively minimal eccentricity, the eccentricity of relative maximum is greater than relatively minimal bias
Away from.
It should here be understood that the eccentricity of so-called relative maximum and so-called relatively minimal eccentricity refer to by a spy
In the range of the relative position variation for the first eccentric block 1 and the second eccentric block 2 that the arc groove 3 and pin 4 of scale cun are determined
Possessed maximum eccentricity and minimum eccentricity, be not necessarily referring in the case where not limited by arc groove 3 and pin 4 adjustable eccentric away from it is inclined
The maximum eccentricity and minimum eccentricity that heart block assembly can have.
If motor output shaft 8 drives the first eccentric block 1 with revolving speed v rotating forward, pin 4 is located at arc groove 3 at this time
First end, the first eccentric block 1 drive the second eccentric block 2 rotate forward, adjustable eccentric provided by the embodiment of the utility model away from bias
Block assembly have relative maximum eccentricity, adjustable eccentric provided by the embodiment of the utility model in this way away from eccentric block component
Just resultant force is vibrated with the relative maximum under revolving speed v；If motor output shaft 8 drives the first eccentric block 1 to invert with revolving speed v, that
Pin 4 is located at the second end of arc groove 3 at this time, and the first eccentric block 1 drives the reversion of the second eccentric block 2, and the utility model is implemented
Example provide adjustable eccentric away from eccentric block component have relatively minimal eccentricity, it is provided by the embodiment of the utility model in this way
Adjustable eccentric away from eccentric block component also just with the relatively minimal vibration resultant force under revolving speed v.
In this way, driving mechanism changes the first eccentric block 1 and the second eccentric block 2 by the sliding of 4 opposing arcuate slot 3 of pin
Relative position, then change adjustable eccentric provided by the embodiment of the utility model away from eccentric block component eccentricity, also just make
Adjustable eccentric provided by the embodiment of the utility model away from eccentric block component (in other words with it is provided by the embodiment of the utility model can
Eccentric away from the connected vibrating motor of eccentric block component) the two different vibrations that can be provided under the steering of same rotating speed difference
Dynamic circuit connector power, i.e. relative maximum vibration resultant force and relatively minimal vibration resultant force.
Since the weight ratio of the first eccentric block 1 and the second eccentric block 2 is limited within the scope of 0.8-1.2, make the first eccentric block 1
It is about the same with 2 mass of the second eccentric block, and there is the approximate inertia of size, so even if the revolution axis hole of the second eccentric block 2
With 8 gap of motor output shaft be more than some numerical value or its play gap is more than some numerical value, is stablizing rotary course
In the first eccentric block 1 and the second eccentric block 2 the problem of phase difference is gradually increased will not occur, while pin is inserted into arc groove
It is interior, and the first eccentric block and the second eccentric block are realized with arc groove collective effect when pin is located at first end or second end
Be connected by power, driving method is more reliable and more stable, thus adjustable eccentric provided by the embodiment of the utility model away from eccentric block
For component in stablizing rotary course, the second eccentric block keeps scheduled relative position with the first eccentric block always.
Adjustable eccentric provided by the embodiment of the utility model away from eccentric block component compared with prior art, by by first
Eccentric block and the second eccentric block are designed as the approximate sectorial block of weight ratio, and by pin and arc groove collective effect come power company
The first eccentric block and the second eccentric block are connect, keeps the driving of the first eccentric block and the second eccentric block more stable, inertia is more nearly,
To adjustable eccentric provided by the embodiment of the utility model away from eccentric block component in stablizing rotary work, make second bias
Block is able to maintain in the predeterminated position relative to the first eccentric block, reduce adjustable eccentric provided by the embodiment of the utility model away from
Requirement of the eccentric block component to excessively high processing, cooperation precision, avoids the problem that frequently repairing.
Refer to Fig. 3 and Fig. 4, as adjustable eccentric provided by the utility model away from eccentric block component a kind of specific reality
Mode is applied, the first eccentric block 1 is identical with the section sector radius of the second eccentric block 2 and corresponding fan-shaped central angle.Such first
The sectional dimension of eccentric block 1 and the second eccentric block 2 is identical.
Refer to Fig. 3 and Fig. 4, as adjustable eccentric provided by the utility model away from eccentric block component a kind of specific reality
Mode is applied, when pin 4 is located at the first end of arc groove 3, the first eccentric block 1 is overlapped with the second eccentric block 2.In this way, first is inclined
When being in different relative positions of heart block 1 and the second eccentric block 2, adjustable eccentric provided by the embodiment of the utility model away from it is inclined
Heart block assembly also just centainly has different eccentricities relative to the center of revolution axis hole.
Refer to Fig. 3 to Fig. 6, as adjustable eccentric provided by the utility model away from eccentric block component a kind of specific reality
Mode is applied, driving mechanism further includes being set on the first eccentric block 1 for abutting the pressing plate 5 of the second eccentric block 2 of driving.Work as pin
4 be located at arc groove 3 first end when, pressing plate 5 is just abutted with the second eccentric block 2.In this way, when pin 4 is located at the of arc groove 3
When one end, the driving force between the first eccentric block 1 and the second eccentric block 2 be exactly 3 edge of pin 4 and arc groove active force and
Pressing plate 5 abuts the resultant force of driving 2 abutting force of the second eccentric block.By the way that pressing plate 5 is arranged, pin 4 can be made to be located at the of arc groove 3
When one end, the first eccentric block 1 is more securely made to drive the second eccentric block 2, is adjustable eccentric provided by the embodiment of the utility model
Away from eccentric block component provide maximum vibration resultant force provide safeguard.Optionally, the sectorial block of the first eccentric block 1 is arranged in pressing plate 5
One side on, folder of the first eccentric block 1 tool there are two parallel end face, two sides and a cambered surface, between two sides
Angle is exactly the corresponding central angle of sectorial block, and pressing plate 5 is located on a side of the first eccentric block 1, and pressing plate 5 can be to second
One side of eccentric block 2 abuts force.
As adjustable eccentric provided by the utility model away from eccentric block component a kind of specific embodiment, pressing plate 5 is
Ferromagnetism material, the second eccentric block 2 is equipped with to abut and the magnetic abutting part of magnetic (magnetic abutting in other words with pressing plate 5
Block), pressing plate 5 can so be preferably bonded with the second eccentric block 2.
As adjustable eccentric provided by the utility model away from eccentric block component a kind of specific embodiment, first is eccentric
Block 1 is equal with 2 mass of the second eccentric block, such first eccentric block 1 with the inertia of the second eccentric block 2 with regard to identical, further
Avoid adjustable eccentric provided by the embodiment of the utility model away from eccentric block component in stablizing rotary work the second eccentric block 2
Deviate absolute presupposition position with the first eccentric block 1.
Refer to Fig. 3 to Fig. 6, as adjustable eccentric provided by the utility model away from eccentric block component a kind of specific reality
Mode is applied, arc groove 3 is arranged on the first eccentric block 1, and pin 4 is connected with the second eccentric block 2.
Refer to Fig. 3 to Fig. 6, as adjustable eccentric provided by the utility model away from eccentric block component a kind of specific reality
Mode is applied, the first eccentric block 1 is set to the inside of the second eccentric block 2.In this way, pin 4 protrudes from the interior plate of the second eccentric block 2
Face, arc groove 3 are located at the outside of the first eccentric block 1.
Refer to Fig. 3 to Fig. 6, as adjustable eccentric provided by the utility model away from eccentric block component a kind of specific reality
Mode is applied, the first eccentric block 1 and the second eccentric block 2 are semicircle sectorial block, i.e. the first eccentric block 1 and the second eccentric block 2
Section sector corresponding to central angle be 180 °, be more advantageous in this way adjustable eccentric provided by the embodiment of the utility model away from it is inclined
Heart block assembly switches between relative maximum eccentricity and relatively minimal eccentricity.
Refer to Fig. 3 and Fig. 6, as adjustable eccentric provided by the utility model away from eccentric block component a kind of specific reality
Mode is applied, the range of the corresponding arc angle of arc groove 3 is set as 80-120 °.
As adjustable eccentric provided by the utility model away from eccentric block component a kind of specific embodiment, this is practical new
Type embodiment provide adjustable eccentric away from eccentric block component with egulation rotating speed v stablize rotate forward when have relative maximum vibration close
Power, being stablized with egulation rotating speed v has relatively minimal vibration resultant force when inverting, and relatively minimal vibration resultant force is equal to relative maximum
The 50% of resultant force is vibrated, and relative maximum vibration resultant force is vibration 100% state of resultant force, relatively minimal vibration resultant force is closed for vibration
50% state of power.
The utility model additionally provides a kind of vibration excitor, including first motor, the second motor, motor mounting plate, non-adjustable
Eccentricity eccentric block component and above-mentioned adjustable eccentric away from eccentric block component, first motor and the second motor are installed in electricity
On machine mounting plate, the outputting axial power of non-adjustable eccentricity eccentric block component and first motor is connected, adjustable eccentric away from bias
Block assembly is connect with the outputting axial power of the second motor, and the first eccentric block is nested with the output shaft of the second motor to be fixed, and second partially
The rotation connection of the output shaft of heart block and the second motor.
Vibration excitor provided by the embodiment of the utility model compared with prior art, by the way that the first eccentric block and second is eccentric
Block is designed as the approximate sectorial block of weight ratio, and the first eccentric block and are connected by power by pin and arc groove collective effect
Two eccentric blocks keep the driving of the first eccentric block and the second eccentric block more stable, and inertia is more nearly, thus in the utility model
Embodiment provide adjustable eccentric away from eccentric block component in stablizing rotary work, be able to maintain the second eccentric block opposite
In the predeterminated position of the first eccentric block, reduce adjustable eccentric provided by the embodiment of the utility model away from eccentric block component to excessively high
Processing, cooperate precision requirement, avoid the problem that frequently repairing.
Refer to Fig. 5, as adjustable eccentric provided by the utility model away from eccentric block component a kind of specific embodiment party
Formula, the axial direction for realizing the second eccentric block 2 by the wear-resistant pad 6 and holding screw 7 that are fixedly attached to 8 periphery of motor output shaft are solid
It is fixed.
As adjustable eccentric provided by the utility model away from eccentric block component a kind of specific embodiment, first is eccentric
Block and motor output shaft 8 are keyed.
The utility model additionally provides a kind of vibrating screen, including screen box, pedestal, isolator and vibration excitor, screen box pass through
Isolator is connected with pedestal, and motor mounting plate is mounted on the screen box.
Vibrating screen provided by the embodiment of the utility model can be realized the linear motion and translation compensation of vibrating screen, be
It is realized by the steering of two motors of control, when first motor rotates forward, and the second motor rotates backward, the utility model
The vibrating screen that embodiment provides, which can be realized vibrating screen, can generate translation compensation, and current first motor rotates backward, the
When two motors rotate forward, vibrating screen provided by the embodiment of the utility model can generate linear motion.
Vibrating screen provided by the embodiment of the utility model compared with prior art, by the way that the first eccentric block and second is eccentric
Block is designed as the approximate sectorial block of weight ratio, and the first eccentric block and are connected by power by pin and arc groove collective effect
Two eccentric blocks keep the driving of the first eccentric block and the second eccentric block more stable, and inertia is more nearly, thus in the utility model
Embodiment provide adjustable eccentric away from eccentric block component in stablizing rotary work, be able to maintain the second eccentric block opposite
In the predeterminated position of the first eccentric block, reduce adjustable eccentric provided by the embodiment of the utility model away from eccentric block component to excessively high
Processing, cooperate precision requirement, avoid the problem that frequently repairing.
As a kind of specific embodiment of vibrating screen provided by the utility model, motor mounting plate is horizontal by 0-
35 ° are obliquely installed, according to the position of the vibrating direction angle of reversed turning Double shaft self synchronous vibrating screen and two motor quality centers
It is related with screen box centroid position, the only position of two motors of reasonable Arrangement, motor fixing plate can appropriate slant setting, therefore
Complete machine structure pattern is more flexible.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (10)
1. adjustable eccentric away from eccentric block component, including for the first fixed eccentric block nested with motor output shaft and being used for
The second eccentric block being rotatedly connected with motor output shaft, first eccentric block and second eccentric block are sectorial block, institute
It states and is equipped with revolution axis hole on the first eccentric block and second eccentric block, which is characterized in that it further include driving mechanism, described
One eccentric block drives second eccentric block to rotate relative to motor output shaft by the driving mechanism, first eccentric block
Weight ratio range with second eccentric block is 0.8-1.2, and sets before and after first eccentric block and second eccentric block
It sets, the driving mechanism includes the arc groove being arranged on first eccentric block or on second eccentric block and is inserted into
And it can be in the pin of arc groove sliding, the center of circle of the arc core of the arc groove and the revolution axis hole in the arc groove
It is overlapped, the pin is connected with second eccentric block or first eccentric block；The arc groove is with first end and relatively
In the second end of the first end, the pin be located at the adjustable eccentric when first end away from eccentric block component there is phase
To maximum eccentricity, the pin be located at the adjustable eccentric when second end away from eccentric block component have it is relatively minimal
Eccentricity；
The driving mechanism changes first eccentric block and described second by the sliding of the relatively described arc groove of the pin
The relative position of eccentric block, then change adjustable eccentric away from eccentric block component eccentricity.
2. adjustable eccentric as described in claim 1 away from eccentric block component, which is characterized in that first eccentric block and described
The fan-shaped radius of second eccentric block and corresponding fan-shaped central angle are identical.
3. adjustable eccentric as claimed in claim 2 away from eccentric block component, which is characterized in that the pin be located at described first
First eccentric block described in when end is overlapped with second eccentric block.
4. adjustable eccentric as claimed in claim 3 away from eccentric block component, which is characterized in that the driving mechanism further includes setting
It is placed on first eccentric block for abutting the pressing plate for driving second eccentric block, the pin is located at the first end
When, the pressing plate is abutted with second eccentric block.
5. adjustable eccentric as claimed in claim 2 away from eccentric block component, which is characterized in that first eccentric block with it is described
Second eccentric block quality is equal.
6. adjustable eccentric according to any one of claims 1 to 5 away from eccentric block component, which is characterized in that the arc groove
It is arranged on first eccentric block, the pin is connected with second eccentric block.
7. adjustable eccentric according to any one of claims 1 to 5 away from eccentric block component, which is characterized in that described first partially
Heart block and second eccentric block are semicircle sectorial block.
8. vibration excitor, including first motor, the second motor, motor mounting plate and non-adjustable eccentricity eccentric block component, described
First motor and second motor are installed on the motor mounting plate, the non-adjustable eccentricity eccentric block component and institute
State the outputting axial power connection of first motor, which is characterized in that further include such as adjustable offset of any of claims 1-7
The heart away from eccentric block component, the adjustable eccentric away from eccentric block component connect with the outputting axial power of second motor, institute
State that the first eccentric block is nested with the output shaft of second motor to be fixed, the output of second eccentric block and second motor
Axis rotation connection.
9. vibrating screen, including screen box, pedestal and isolator, the screen box is connected by isolator with the pedestal, feature
It is, further includes vibration excitor as claimed in claim 8, the motor mounting plate is mounted on the screen box.
10. vibrating screen as claimed in claim 9, which is characterized in that the motor mounting plate is set horizontal by 0-35 ° of inclination
It sets.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822192480.2U CN209476646U (en) | 2018-12-25 | 2018-12-25 | Adjustable eccentric away from eccentric block component, vibration excitor and vibrating screen |
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| CN201822192480.2U CN209476646U (en) | 2018-12-25 | 2018-12-25 | Adjustable eccentric away from eccentric block component, vibration excitor and vibrating screen |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639808A (en) * | 2019-10-18 | 2020-01-03 | 长江大学 | Adjusting eccentric block capable of realizing double-track motion of vibrating screen |
| CN115287980A (en) * | 2022-01-28 | 2022-11-04 | 聊城大学 | Steel wheel of stepless amplitude modulation vibration road roller |
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2018
- 2018-12-25 CN CN201822192480.2U patent/CN209476646U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639808A (en) * | 2019-10-18 | 2020-01-03 | 长江大学 | Adjusting eccentric block capable of realizing double-track motion of vibrating screen |
| CN110639808B (en) * | 2019-10-18 | 2024-04-09 | 长江大学 | Adjustable eccentric block capable of realizing double-track motion of vibrating screen |
| CN115287980A (en) * | 2022-01-28 | 2022-11-04 | 聊城大学 | Steel wheel of stepless amplitude modulation vibration road roller |
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Effective date of registration: 20201117 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Petroleum Equipment Manufacturing Co.,Ltd. Patentee after: HG (HEBEI) DRILLING EQUIPMENT Co.,Ltd. Address before: 300 000 No. 83, Second Avenue, Economic and Technological Development Zone, Binhai New Area, Tianjin Patentee before: CNPC Bohai Petroleum Equipment Manufacturing Co.,Ltd. Patentee before: HG (HEBEI) DRILLING EQUIPMENT Co.,Ltd. |