CN209935215U - Two-degree-of-freedom parallel vibrating screen - Google Patents

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 vibration branch, a second vibration branch, a third vibration branch, a fourth vibration branch and a fifth vibration branch The chain, the static platform and the screen frame are composed, wherein the first vibration branch chain and the second vibration branch chain are installed on the same side, the third vibration branch chain and the fourth vibration branch chain are installed on the same side, and the first vibration branch chain, The driving of the second vibration branch chain, the third vibration branch chain and the fourth vibration branch chain is provided by a linear motor; the drive of the fifth vibration branch chain is driven by a common motor to drive the roller to rotate, and the roller drives the cam mechanism to realize the drive of the five branch chains. The screen frame realizes rotation around the x-direction and movement along the x-direction. The vibrating screen of the utility model is based on a parallel mechanism, which greatly improves the screening efficiency of materials, has high rigidity, stable and reliable screening performance, and has practical significance for industrial application.

Description

A two-degree-of-freedom parallel vibrating screen

technical field

The invention relates to the field of material screening equipment, in particular to a material separation vibrating screen with two degrees of freedom movement space based on a parallel mechanism.

Background technique

Vibrating screen is the equipment used for material sorting, which has been widely used in coal, metallurgy, agriculture, food and other industries. Most of the traditional vibrating screens use eccentric weight or eccentric shaft configuration to make the screen body vibrate, the degree of freedom is mostly single, and the screening efficiency is not high.

A parallel mechanism can be defined as a closed-loop mechanism in which the moving platform and the fixed platform are connected by at least two independent kinematic chains and are driven in parallel. Compared with the traditional vibrating screen, the parallel vibrating screen has the advantages of large overall structural rigidity, high precision, large bearing capacity and stable structure.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a two-degree-of-freedom parallel vibrating screen in view of the deficiencies of the prior art. By driving five branch chains, the vibrating screening motion can be realized, which not only improves the screening efficiency, but also the screening process is stable and controllable. Strong practicality.

The technical scheme adopted in the present invention is: a parallel vibrating screen with two degrees of freedom, the parallel vibrating screen comprises a frame, namely a static platform, a box body, a first branch chain, a second branch chain, a third branch chain, and a fourth branch chain, the fifth branched chain and the screen frame; the first branched cylindrical pair and the second branched cylindrical pair are connected to the screen frame, the first branched cylindrical pair and the second branched cylindrical pair are coaxial, and the third branched cylindrical pair is connected to the screen frame. The chain cylinder pair and the fourth branch chain cylinder pair are connected with the screen frame, the third branch chain cylinder pair is coaxial with the fourth branch chain cylinder pair, and the ball hinge at the end of the fifth branch chain is connected with the screen frame; the first The rotating pair of the branched chain and the second rotating pair of the branched chain are connected with the static platform. The static platform is connected, the rotating shaft of the third branched chain rotating pair is collinear with the rotating shaft of the fourth branched chain rotating pair, the head end of the fifth branch chain is in contact with the cam by the pulley and the first end grabbing rod of the fifth branch chain is fixed and grasped The rod pin is connected to the cam, and then the motor drives the roller to rotate, the roller drives the rotating shaft to rotate, and the rotating shaft drives the cam to rotate; the screen frame has the first, second, third, and fourth branch chain moving pairs as the driving pair, and the fifth branch chain Under the combined action of the rotating pair as the driving pair, the two-degree-of-freedom vibrating screening motion of rotation around the x-direction and translation along the x-direction can be realized.

The first branch chain, the second branch chain, the third branch chain and the fourth branch chain have the same structure, and all include the first branch chain rotation pair, the second branch chain rotation pair, the third branch chain rotation pair, and the fourth branch chain rotation pair. Chain rotation pair, the first branch chain moving pair, the second branch chain moving pair, the third branch chain moving pair, the fourth branch chain moving pair, the first branch chain cylindrical pair, the second branch chain cylindrical pair, the third branch chain Cylinder pair, the fourth branch chain cylinder pair, the first branch link 1, the second branch link 1, the third branch link 1, the fourth branch link 1 and the first branch link 2, The second branch link 2, the third branch link 2, and the fourth branch link 2, wherein the first branch moving pair is connected by the first branch link 1 and the first branch link 2, The second branch chain moving pair is connected by the second branch link 1 and the second branch link 2, and the third branch moving pair is connected by the third branch link 1 and the third branch link 2, The fourth branch chain moving pair is connected by the fourth branch link 1 and the fourth branch link 2 .

The fifth branch chain includes a ball hinge, a fifth branch link link, a pulley, a pin shaft, a slide rail, a slide rail shaft, a grab rod, a grab rod pin, a cam, and a fifth branch chain rotating pair; the fifth branch chain The chain link, pulley, pin, slide rail, grab bar, grab bar pin, cam, and rotating pair form a cam mechanism; the end of the fifth branch chain link is connected with the screen frame for translation along the slide rail, that is, along the x The direction translation is described; the fifth branch link, the grab rod, and the grab rod pin are integrally formed; the pulley is connected to the grab rod through a pin shaft; the slide rail and the slide rail shaft are integrally formed, and the whole is formed with the connecting rod turn.

The static platform is integrally formed with the box body, and both sides of the box body are fixed by reinforcing ribs.

The driving pairs of the first branch chain, the second branch chain, the third branch chain, and the fourth branch chain are respectively 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. The chain moving pair, the driving pair of the fifth branch is the rotation pair of the fifth branch, and the driving pairs of the first branch, the second branch, the third branch, the fourth branch and the fifth branch are all driven by power The source drives the work, and simultaneously starts the power source of the first branch chain, the second branch chain, the third branch chain, the fourth branch chain and the fifth branch chain, so that the screen frame can realize the rotation around the x direction and the translation movement along the x direction, wherein The drive of the fifth branch chain plays the main role of vibrating screening, and the other four branch chains play the role of support and auxiliary adjustment.

The power source of the first branch chain, the second branch chain, the third branch chain and the fourth branch chain is a linear motor, the first branch chain and the second branch chain are driven exactly the same, and the third branch chain and the fourth branch chain drive It is exactly the same; the power source of the fifth branch chain is an ordinary motor.

The beneficial effects of the present invention are: the parallel mechanism in the present invention is composed of five branched chains, and its configuration is 4RPC/PS. The sieve body of the invention can adjust the vibration frequency and rotation angle of the sieve body through the different drives of the five branch chains, can adapt to the screening of various materials, and has high screening efficiency; the invention has a simple structure, is easy to produce and process, and is easy to control , the screening process has good stability; the five branch chains in the parallel mechanism of the present invention are all simple single open chains, no complex branch chains, simple maintenance, and a certain reference value for the research and development of the parallel vibrating screen.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention

Fig. 2 is the schematic diagram of the first, second, third, and fourth branch chain and the moving platform connected by the cylinder pair in Fig. 1 of the present invention

Fig. 3 is the schematic diagram of the first, second, third, and fourth branch chains in Fig. 1 of the present invention connected with the rotating pair of the static platform

Fig. 4 is the schematic diagram of the cam mechanism in Fig. 1 of the present invention

The reference signs are as follows: 1—box body; 2—cam; 2-1—the fifth branch chain rotating pair; 3—roller; 4—rotating shaft; 5—slide rail; 5-1—slide rail shaft; Five chain connecting rods; 7—ball hinge; 8—screen frame; 9—rib plate; 10—pulley; 10-1—pin shaft; 11—grab rod; 11-1—grab rod pin; 12—first support Chain rotation pair; 13—second branch chain rotation pair; 14—first branch chain link 1; 15—second branch chain link 1; 16—first branch chain moving pair; 17—first branch chain link 2; 18—the second branch chain moving pair; 19—the second branch link connecting rod 2; 20—the first branch chain cylinder pair; 21—the second branch chain cylinder pair; 22—the first branch chain and the second branch chain Connecting shaft; 23 - connecting shaft between the third branch chain and the fourth branch chain; 24 - the third branch chain cylinder pair; 25 - the fourth branch chain cylinder pair; 26 - the third branch chain connecting rod 2; 27 - the fourth branch Chain link 2; 28—the third branch chain moving pair; 29—the third branch chain link 1; 30—the fourth branch chain moving pair; 31—the fourth branch link 1; 32—the third branch chain rotation Vice; 33 - fourth branch chain rotation pair; 34 - static platform

Detailed ways

In order to make the structural features, technical means and creation features of the present invention easy to understand, the present invention will be further described below with reference to the specific implementation and accompanying drawings.

The technical realization of the present invention is realized by the following scheme: a two-degree-of-freedom parallel vibrating screen, that is, comprising a first vibration branch, a second vibration branch, a third vibration branch, a fourth vibration branch, and a fifth vibration branch The chain, the static platform and the screen frame are composed; wherein the first branched cylindrical pair 20 and the second branched cylindrical pair 21 are connected to the screen frame 8, and the first branched cylindrical pair 20 is coaxial with the second branched cylindrical pair 21, The third branched cylindrical pair 24 and the fourth branched cylindrical pair 25 are connected to the screen frame 8, the third branched cylindrical pair 24 and the fourth branched cylindrical pair 25, and the fifth branched end motion pair spherical hinge 7 and the screen frame 8 are connected; the first branch chain rotating pair 12, the second branch chain rotating pair 13 are connected with the static platform 34, the rotating shaft of the first branch chain rotating pair 12 is collinear with the rotating shaft of the second branch chain rotating pair 13, and the third branch chain rotating pair 13 The rotation pair 32 and the fourth branch chain rotation pair 33 are connected to the static platform 34, the rotation axis of the third branch chain rotation pair 32 is collinear with the rotation axis of the fourth branch chain rotation pair 33, and the head end of the fifth branch chain is connected by the pulley 10 and the shaft. The cam 2 is in contact and the grab rod 11 at the head end of the fifth branch chain is fixed to the grab rod pin 11-1 and connected to the cam 2, and then the motor drives the roller 3 to rotate, the roller 3 drives the rotation shaft 4 to rotate, and the rotation shaft 4 drives the cam 2 to rotate; The frame 8 can realize the two-degree-of-freedom vibrating screening motion of rotation around the x-direction and translation along the x-direction under the joint action of the five branch chains.

The first branch chain, the second branch chain, the third branch chain and the fourth branch chain have the same structure, including the first branch chain rotation pair 12, the second branch chain rotation pair 13, the third branch chain rotation pair 32, the fourth branch chain rotation pair The branch chain rotation pair 33, the first branch chain moving pair 16, the second branch chain moving pair 18, the third branch chain moving pair 28, the fourth branch chain moving pair 30, the first branch chain cylindrical pair 20, the second branch chain Cylinder pair 21, third branch cylinder pair 24, fourth branch cylinder pair 25, first branch link 114, second branch link 115, third branch link 129, fourth branch link 131 and the first branch link 217, the second branch link 219, the third branch link 226, and the fourth branch link 227, wherein the first branch moving pair 16 is composed of the first branch link 114 It is connected with the first branch link 217, the second branch moving pair 18 is connected by the second branch link 115 and the second branch link 219, and the third branch moving pair 28 is connected by the third branch. The rod 129 is connected with the third branch link 226, the fourth branch moving pair 30 is connected by the fourth branch link 131 and the fourth branch link 227, the third branch moving pair 28 and the fourth branch The chain moving pair 30 is driven by a linear motor to move at the same frequency.

As shown in Figure 1, Figure 3, Figure 4, the fifth branch chain includes a ball hinge 7, a fifth branch link link 6, a pulley 10, a pin shaft 10-1, a slide rail 5, a slide rail shaft 5-1, and a grab bar 11. Grab rod pin 11-1, cam 2, fifth branch chain rotation pair 2-1; the fifth branch chain link 6, pulley 10, pin 10-1, slide rail 5, grab rod 11, grab The rod pin 11-1, the cam 2, and the fifth branch chain rotation pair 2-1 form a cam mechanism; the end of the fifth branch chain link 6 is connected to the screen frame for translation along the slide rail 5, that is, translation along the x direction; pulley 10 The grab bar 11 is connected with the pin shaft 10-1, and the fifth branch chain is driven to move along the x-direction by a common motor as a power source.

The static platform 34 is integrally formed with the box body 1, and the two sides of the box body 1 are fixed by reinforcing ribs 9 to avoid excessive force vibration and deformation.

The driving pairs of the first branch chain, the second branch chain, the third branch chain and the fourth branch chain are the first branch chain moving pair, the second branch moving pair, the third branch moving pair, and the fourth branch moving pair, respectively. Vice 16, 18, 28, 30, the driving pair of the fifth branch is the fifth branch rotation pair 2-1, and the first branch, the second branch, the third branch, the fourth branch and the fifth branch The driving pairs of the branched chains are all driven by the power source, and simultaneously starting 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 can make the screen frame 8 realize the x direction. Rotation and translational movement along the x-direction, in which the drive of the fifth branch chain plays the main role of vibrating screening, and the remaining four branch chains play the role of support and auxiliary adjustment.

The working process of the present invention is as follows: turning on the power source of the fifth branch chain, that is, the common motor, the common 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 to rotate, so that the fifth branch chain rotates along the sliding The rail 5 moves back and forth in a straight line, and then 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 are respectively driven by four linear motors. Move to adjust the motion form of the screen frame, so that the entire screen frame can be vibrated and screened. The working frequencies of the linear motors of the fourth branch chain moving pair 28 are the same.

The examples are preferred embodiments of the present invention, but the present invention is not limited to the above-mentioned specific embodiments, and modifications, replacements and modifications made without departing from the essence of the present invention all belong to the protection scope of the present 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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