CN209935215U - Two-degree-of-freedom parallel vibrating screen - Google Patents
Two-degree-of-freedom parallel vibrating screen Download PDFInfo
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- CN209935215U CN209935215U CN201920549254.7U CN201920549254U CN209935215U CN 209935215 U CN209935215 U CN 209935215U CN 201920549254 U CN201920549254 U CN 201920549254U CN 209935215 U CN209935215 U CN 209935215U
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Abstract
The utility model discloses a two-degree-of-freedom parallel vibrating screen, which belongs to the field of material screening and specifically comprises a first vibrating branch chain, a second vibrating branch chain, a third vibrating branch chain, a fourth vibrating branch chain, a fifth vibrating branch chain, a static platform and a screen frame, wherein the first vibrating branch chain and the second vibrating branch chain are arranged on the same side, the third vibrating branch chain and the fourth vibrating branch chain are arranged on the same side, and the drive of the first vibrating branch chain, the second vibrating branch chain, the third vibrating branch chain and the fourth vibrating branch chain is provided by a linear motor; the roller is driven to rotate by a common motor, the roller drives the cam mechanism to realize, and the five branched chains are driven to enable the screen frame to rotate around the x direction and move along the x direction. The utility model discloses a shale shaker has improved the screening efficiency of material greatly based on parallel mechanism, and rigidity is big, and screening performance is reliable and stable, has realistic meaning to batch production application.
Description
Technical Field
The invention relates to the field of material screening equipment, in particular to a material separation vibrating screen with a two-degree-of-freedom motion space based on a parallel mechanism.
Background
The vibrating screen is used for material sorting equipment and is widely used in industries such as coal, metallurgy, agriculture and food. Most of the traditional vibrating screens adopt an excitation device with eccentric weight or eccentric shaft configuration mode to realize vibration of the screen body, the degree of freedom is mostly single, and the screening efficiency is not high.
The parallel mechanism can be defined as a closed loop mechanism that the movable platform and the fixed platform are connected through at least two independent kinematic chains and are driven in a parallel mode. Compared with the traditional vibrating screen, the parallel vibrating screen has the advantages of large rigidity of the whole structure, high precision, large bearing capacity, stable structure and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a two-degree-of-freedom parallel vibrating screen, which can realize vibrating screening motion by driving five branched chains, thereby not only improving the screening efficiency, but also having stable and controllable screening process and strong practicability.
The technical scheme adopted by the invention is as follows: a two-degree-of-freedom parallel vibrating screen comprises a frame, namely a static platform, a box body, a first branched chain, a second branched chain, a third branched chain, a fourth branched chain, a fifth branched chain and a screen frame; the first branched chain cylindrical pair and the second branched chain cylindrical pair are connected with the screen frame, the first branched chain cylindrical pair and the second branched chain cylindrical pair are coaxial, the third branched chain cylindrical pair and the fourth branched chain cylindrical pair are connected with the screen frame, the third branched chain cylindrical pair and the fourth branched chain cylindrical pair are coaxial, and the ball hinge of the kinematic pair at the tail end of the fifth branched chain is connected with the screen frame; the first branched chain revolute pair and the second branched chain revolute pair are connected with the static platform, a rotating shaft of the first branched chain revolute pair is collinear with a rotating shaft of the second branched chain revolute pair, a third branched chain revolute pair and a fourth branched chain revolute pair are connected with the static platform, a rotating shaft of the third branched chain revolute pair is collinear with a rotating shaft of the fourth branched chain revolute pair, the head end of the fifth branched chain is in contact with a cam through a pulley, a fixed grabbing rod pin of a grabbing rod at the head end of the fifth branched chain is connected with the cam, a motor drives a roller to rotate, the roller drives the rotating shaft to rotate, and the rotating shaft drives the; the screen frame can realize two-degree-of-freedom vibration screening motion of rotating around the x direction and translating along the x direction under the combined action of the first, second, third and fourth branched chain revolute pairs as driving pairs and the fifth branched chain revolute pair as a driving pair.
The first branched chain, the second branched chain, the third branched chain and the fourth branched chain have the same structure and respectively comprise a first branched chain revolute pair, a second branched chain revolute pair, a third branched chain revolute pair and a fourth branched chain revolute pair, wherein the first branched chain revolute pair, the second branched chain revolute pair, the fourth branched chain revolute pair, the first branched chain revolute pair, the second branched chain revolute pair, the third branched chain revolute pair, the fourth branched chain revolute pair, a first branched chain prismatic pair, a second branched chain prismatic pair, a third branched chain prismatic pair and a fourth branched chain prismatic pair, a first branched chain connecting rod 1, a second branched chain connecting rod 1, a fourth branched chain connecting rod 1, a first branched chain connecting rod 2, a second branched chain connecting rod 2, a third branched chain connecting rod 2 and a fourth branched chain connecting rod 2, the first branched chain prismatic pair is connected by the first branched chain connecting rod 1 and the first branched chain connecting rod 2, the second branched chain prismatic pair is connected by the second branched chain connecting rod 1 and the second branched chain connecting rod 2, the, the fourth branched chain sliding pair is connected with a fourth branched chain connecting rod 1 and a fourth branched chain connecting rod 2.
The fifth branched chain comprises a spherical hinge, a fifth branched chain connecting rod, a pulley, a pin shaft, a slide rail shaft, a grabbing rod pin, a cam and a fifth branched chain revolute pair; the fifth branched chain connecting rod, the pulley, the pin shaft, the sliding rail, the grabbing rod pin, the cam and the revolute pair form a cam mechanism; the tail end of the fifth branched chain connecting rod is connected with the screen frame and translates along the slide rail, namely along the x direction; the fifth branched chain connecting rod, the grabbing rod and the grabbing rod pin are integrally formed; the pulley is connected with the grabbing rod through a pin shaft; the slide rail and the slide rail shaft are integrally formed, and the whole body rotates along with the connecting rod.
The static platform and the box body are integrally formed, and two sides of the box body are fixed through reinforcing ribs.
The driving pairs of the first branched chain, the second branched chain, the third branched chain and the fourth branched chain are respectively a first branched chain moving pair, a second branched chain moving pair, a third branched chain moving pair and a fourth branched chain moving pair, the driving pair of the fifth branched chain is a fifth branched chain revolute pair, the driving pairs of the first branched chain, the second branched chain, the third branched chain, the fourth branched chain and the fifth branched chain are driven by a power source to work, the power source of the first branched chain, the second branched chain, the third branched chain, the fourth branched chain and the fifth branched chain is started simultaneously, so that the screen frame can rotate around the x direction and move in the x direction in a translation mode, the driving of the fifth branched chain plays a main vibration screening role, and the rest four branched chains play supporting and auxiliary adjusting roles.
The power sources of the first branched chain, the second branched chain, the third branched chain and the fourth branched chain are linear motors, the first branched chain and the second branched chain are driven to be completely the same, and the third branched chain and the fourth branched chain are driven to be completely the same; and the power source of the fifth branch chain is a common motor.
The invention has the beneficial effects that: the parallel mechanism is formed by five branched chains, and the configuration of the parallel mechanism is 4 RPC/PS. The screen body can adjust the vibration frequency and the rotation angle of the screen body through different driving of the five branched chains, can adapt to screening of various materials, and has high screening efficiency; the invention has simple structure, easy production and processing, easy control and good stability in the screening process; five branched chains in the parallel mechanism are all simple and single open chains, no complex branched chain exists, the maintenance is simple, and the parallel mechanism has certain reference value for research and development of parallel vibrating screens.
Drawings
FIG. 1 is a schematic diagram of the general structure of the present invention
FIG. 2 is a schematic view showing the connection of the first, second, third and fourth branched chains of FIG. 1 with the movable platform by the cylindrical pair
FIG. 3 is a schematic view of the present invention showing the connection of the first, second, third and fourth branched chains of FIG. 1 with the rotating pair of the stationary platform
FIG. 4 is a schematic view of the cam mechanism of FIG. 1 according to the present invention
The reference numbers are as follows: 1, a box body; 2-a cam; 2-1-fifth branched chain revolute pair; 3, rolling wheels; 4, rotating the shaft; 5, a sliding rail; 5-1-a slide rail shaft; 6-fifth branched link; 7, spherical hinge; 8, a screen frame; 9-rib plate; 10-a pulley; 10-1-pin shaft; 11-a grab bar; 11-1-grab bar pin; 12-a first branch chain revolute pair; 13-second branched chain revolute pair; 14-first fulcrum link 1; 15-second branched link 1; 16-first branch chain moving pair; 17-first branch link 2; 18-second branched chain sliding pair; 19-second branched link 2; 20-a first branched chain cylindrical pair; 21-second branched cylindrical pair; 22-the first branch is connected with the second branch; 23-the third branch is connected with the fourth branch; 24-a third branched cylindrical pair; 25-a fourth branched cylindrical pair; 26-third branched link 2; 27-fourth branched link 2; 28-third branched chain sliding pair; 29-third branched link 1; 30-fourth branched chain sliding pair; 31-fourth branched link 1; 32-third branched chain revolute pair; 33-fourth branched chain revolute pair; 34-static platform
Detailed Description
In order to make the structural features, technical means and creative features of the invention easy to understand, the invention is further explained below by combining specific implementation and accompanying drawings.
The technical implementation of the invention is realized by the following scheme: a two-degree-of-freedom parallel vibrating screen comprises a first vibrating branch chain, a second vibrating branch chain, a third vibrating branch chain, a fourth vibrating branch chain, a fifth vibrating branch chain, a static platform and a screen frame; the first branched chain cylindrical pair 20 and the second branched chain cylindrical pair 21 are connected with the screen frame 8, the first branched chain cylindrical pair 20 and the second branched chain cylindrical pair 21 are coaxial, the third branched chain cylindrical pair 24 and the fourth branched chain cylindrical pair 25 are connected with the screen frame 8, the third branched chain cylindrical pair 24 and the fourth branched chain cylindrical pair 25 are connected, and the ball hinge 7 of the fifth branched chain end kinematic pair is connected with the screen frame 8; the first branched chain revolute pair 12 and the second branched chain revolute pair 13 are connected with a static platform 34, a rotating shaft of the first branched chain revolute pair 12 is collinear with a rotating shaft of the second branched chain revolute pair 13, a third branched chain revolute pair 32 and a fourth branched chain revolute pair 33 are connected with the static platform 34, a rotating shaft of the third branched chain revolute pair 32 is collinear with a rotating shaft of the fourth branched chain revolute pair 33, the head end of a fifth branched chain is in contact with a cam 2 through a pulley 10, a grab bar 11 at the head end of the fifth branched chain is fixed with a grab bar pin 11-1 and connected with the cam 2, a motor drives a roller 3 to rotate, the roller 3 drives a rotating shaft 4 to rotate, and the rotating shaft 4; the screen frame 8 can realize two-degree-of-freedom vibration screening movement of rotating around the x direction and translating along the x direction under the combined action of the five branched chains.
The first branched chain, the second branched chain, the third branched chain and the fourth branched chain have the same structure, and respectively comprise a first branched chain revolute pair 12, a second branched chain revolute pair 13, a third branched chain revolute pair 32 and a fourth branched chain revolute pair 33, a first branched chain revolute pair 16, a second branched chain revolute pair 18, a third branched chain revolute pair 28 and a fourth branched chain revolute pair 30, a first branched chain cylindrical pair 20, a second branched chain cylindrical pair 21, a third branched chain cylindrical pair 24 and a fourth branched chain cylindrical pair 25, a first branched chain connecting rod 114, a second branched chain connecting rod 115, a third branched chain connecting rod 129, a fourth branched chain connecting rod 131, a first branched chain connecting rod 217, a second branched chain connecting rod 219, a third branched chain connecting rod 226 and a fourth branched chain connecting rod 227, wherein the first branched chain revolute pair 16 is connected with the first branched chain connecting rod 114 and the second branched chain connecting rod 115 and the fourth branched chain connecting rod 227, the third branched chain moving pair 28 is connected with the third branched chain connecting rod 226 by the third branched chain connecting rod 129, the fourth branched chain moving pair 30 is connected with the fourth branched chain connecting rod 227 by the fourth branched chain connecting rod 131, and the third branched chain moving pair 28 and the fourth branched chain moving pair 30 are driven by the linear motor to move with the same frequency.
The fifth branched chain comprises a spherical hinge 7, a fifth branched chain connecting rod 6, a pulley 10, a pin shaft 10-1, a slide rail 5, a slide rail shaft 5-1, a grabbing rod 11, a grabbing rod pin 11-1, a cam 2 and a fifth branched chain revolute pair 2-1 as shown in the figures 1, 3 and 4; the fifth branched chain connecting rod 6, the pulley 10, the pin shaft 10-1, the slide rail 5, the grabbing rod 11, the grabbing rod pin 11-1, the cam 2 and the fifth branched chain revolute pair 2-1 form a cam mechanism; the tail end of the fifth branched chain connecting rod 6 is connected with the screen frame and translates along the slide rail 5, namely, along the x direction; the pulley 10 is connected with a grabbing rod 11 through a pin shaft 10-1, and a common motor is used as a power source to drive the fifth branch chain to move along the x direction.
The static platform 34 and the box body 1 are integrally formed, and two sides of the box body 1 are fixed through the reinforcing ribs 9, so that the conditions of overlarge stress vibration, deformation and the like are avoided.
The driving pairs of the first branched chain, the second branched chain, the third branched chain and the fourth branched chain are respectively a first branched chain moving pair, a second branched chain moving pair, a third branched chain moving pair, a fourth branched chain moving pair 16, 18, 28 and 30, the driving pair of the fifth branched chain is a fifth branched chain rotating pair 2-1, the driving pairs of the first branched chain, the second branched chain, the third branched chain, the fourth branched chain and the fifth branched chain are driven by a power source to work, and the power source of the first branched chain, the second branched chain, the third branched chain, the fourth branched chain and the fifth branched chain is started to enable the screen frame 8 to rotate around the x direction and move in a translation mode along the x direction, wherein the driving of the fifth branched chain plays a main vibration screening role, and the rest four branched chains play supporting and auxiliary adjusting roles.
The working process of the invention is as follows: the power source of the fifth branch chain is opened, namely, the common motor drives the roller 3 to rotate, the roller 3 drives the rotating shaft 4 to rotate, the rotating shaft 4 drives the cam to rotate, the fifth branch chain is made to do linear reciprocating motion along the sliding rail 5, and then the four linear motors respectively drive the first branch chain moving pair, the second branch chain moving pair, the third branch chain moving pair and the fourth branch chain moving pair 16, 18, 28 and 30 to move to adjust the motion form of the screen frame, so that the whole screen frame is subjected to vibration screening, wherein the working frequencies of the linear motors of the first branch chain moving pair 16 and the second branch chain moving pair 18 are the same, and the working frequencies of the linear motors of the third branch chain moving pair 28 and the fourth branch chain moving pair 28 are the same.
The present invention is not limited to the above-described specific embodiments, and variations, substitutions and alterations can be made without departing from the spirit of the invention.
Claims (6)
1. A two-freedom-degree parallel vibrating screen is characterized in that: the parallel vibrating screen comprises a frame, namely a static platform (34), a box body (1), a first branched chain, a second branched chain, a third branched chain, a fourth branched chain, a fifth branched chain and a screen frame (8); the first branched chain cylindrical pair (20) and the second branched chain cylindrical pair (21) are connected with the screen frame (8), the first branched chain cylindrical pair (20) and the second branched chain cylindrical pair (21) are coaxial, the third branched chain cylindrical pair (24) and the fourth branched chain cylindrical pair (25) are connected with the screen frame (8), the third branched chain cylindrical pair (24) and the fourth branched chain cylindrical pair (25) are coaxial, and the kinematic pair spherical hinge (7) at the tail end of the fifth branched chain is connected with the screen frame (8); a first branched chain revolute pair (12) and a second branched chain revolute pair (13) are connected with a static platform (34), a rotating shaft of the first branched chain revolute pair (12) is collinear with a rotating shaft of the second branched chain revolute pair (13), a third branched chain revolute pair (32) and a fourth branched chain revolute pair (33) are connected with the static platform (34), a rotating shaft of the third branched chain revolute pair (32) is collinear with a rotating shaft of the fourth branched chain revolute pair (33), the head end of the fifth branched chain is in contact with a cam (2) through a pulley (10) and a fixed grab bar pin (11-1) of a grab bar (11) at the head end of the fifth branched chain is connected with the cam (2), then a motor drives the roller (3) to rotate, the roller (3) drives the rotating shaft (4) to rotate, and the rotating shaft (4) drives the cam (; the screen frame (8) can realize two-degree-of-freedom vibration screening motion of rotating around the x direction and translating along the x direction under the combined action of a first branched chain moving pair (16, 18, 28, 30), a second branched chain moving pair, a third branched chain moving pair and a fourth branched chain moving pair, and a fifth branched chain moving pair (2-1) as a driving pair.
2. The two-degree-of-freedom parallel vibrating screen of claim 1, wherein: the first branch chain, the second branch chain, the third branch chain and the fourth branch chain have the same structure and respectively comprise a first branch chain revolute pair (12), a second branch chain revolute pair (13), a third branch chain revolute pair (32), a fourth branch chain revolute pair (33), a first branch chain revolute pair (16), a second branch chain revolute pair (18), a third branch chain revolute pair (28), a fourth branch chain revolute pair (30), a first branch chain cylindrical pair (20), a second branch chain cylindrical pair (21), a third branch chain cylindrical pair (24), a fourth branch chain cylindrical pair (25), a first branch chain connecting rod (1) (14), a second branch chain connecting rod (1) (15), a third branch chain connecting rod (1) (29), a fourth branch chain connecting rod (1) (31), a first branch chain connecting rod (2) (17), a second branch chain connecting rod (2) (19), a third branch chain connecting rod (2) (26) and a fourth branch chain connecting rod (27), wherein the first branch chain revolute pair (16) is connected with the first branch chain connecting rod (1) (14) and the first branch chain connecting rod (2) (17), the second branched chain moving pair (18) is connected with the second branched chain connecting rod (2) (19) by the second branched chain connecting rod (1) (15), the third branched chain moving pair (28) is connected with the third branched chain connecting rod (2) (26) by the third branched chain connecting rod (1) (29), and the fourth branched chain moving pair (30) is connected with the fourth branched chain connecting rod (2) (27) by the fourth branched chain connecting rod (1) (31).
3. The two-degree-of-freedom parallel vibrating screen of claim 1, wherein: the fifth branched chain comprises a spherical hinge (7), a fifth branched chain connecting rod (6), a pulley (10), a pin shaft (10-1), a sliding rail (5), a sliding rail shaft (5-1), a grabbing rod (11), a grabbing rod pin (11-1), a cam (2) and a fifth branched chain revolute pair (2-1); the fifth branched chain connecting rod (6), the pulley (10), the pin shaft (10-1), the sliding rail (5), the grabbing rod (11), the grabbing rod pin (11-1) and the cam (2) form a cam mechanism; the tail end of the fifth branched chain connecting rod (6) is connected with the screen frame and translates along the sliding rail (5), namely along the x direction; the fifth branched chain connecting rod (6), the grabbing rod (11) and the grabbing rod pin (11-1) are integrally formed; the pulley (10) is connected with a grabbing rod (11) through a pin shaft (10-1); the slide rail (5) and the slide rail shaft (5-1) are integrally formed, and the whole body rotates along with the connecting rod.
4. The two-degree-of-freedom parallel vibrating screen of claim 1, wherein: the static platform (34) and the box body (1) are integrally formed, and two sides of the box body (1) are fixed through reinforcing ribs (9).
5. The two-degree-of-freedom parallel vibrating screen of claim 1, wherein: the driving pairs of the first branched chain, the second branched chain, the third branched chain and the fourth branched chain are respectively a first branched chain moving pair, a second branched chain moving pair, a third branched chain moving pair and a fourth branched chain moving pair (16, 18, 28 and 30), the driving pair of the fifth branched chain is a fifth branched chain rotating pair (2-1), the driving pairs of the first branched chain, the second branched chain, the third branched chain, the fourth branched chain and the fifth branched chain are driven by a power source to work, and the power source of the first branched chain, the second branched chain, the third branched chain, the fourth branched chain and the fifth branched chain is started to enable the screen frame (8) to rotate around the x direction and move in a translation direction along the x direction, wherein the driving of the fifth branched chain plays a main vibration screening role, and the rest four branched chains play supporting and auxiliary adjusting roles.
6. The two-degree-of-freedom parallel vibrating screen of claim 5, wherein: the power sources of the first branched chain, the second branched chain, the third branched chain and the fourth branched chain are linear motors, the first branched chain and the second branched chain are driven to be completely the same, and the third branched chain and the fourth branched chain are driven to be completely the same; and the power source of the fifth branch chain is a common motor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920549254.7U CN209935215U (en) | 2019-04-22 | 2019-04-22 | Two-degree-of-freedom parallel vibrating screen |
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| CN201920549254.7U CN209935215U (en) | 2019-04-22 | 2019-04-22 | Two-degree-of-freedom parallel vibrating screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865668A (en) * | 2019-04-22 | 2019-06-11 | 安徽理工大学 | A kind of two-degree-of-freedoparallel parallel vibrating screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865668A (en) * | 2019-04-22 | 2019-06-11 | 安徽理工大学 | A kind of two-degree-of-freedoparallel parallel vibrating screen |
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