CN115156034A - Large screening machine with parallel force system and balanced driving - Google Patents
Large screening machine with parallel force system and balanced driving Download PDFInfo
- Publication number
- CN115156034A CN115156034A CN202210767766.7A CN202210767766A CN115156034A CN 115156034 A CN115156034 A CN 115156034A CN 202210767766 A CN202210767766 A CN 202210767766A CN 115156034 A CN115156034 A CN 115156034A
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- Prior art keywords
- vibration exciter
- exciter
- vibration
- screen
- machine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
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- Combined Means For Separation Of Solids (AREA)
Abstract
A large screening machine with a parallel force system and balanced driving belongs to the field of vibrating screening machinery and solves the problem of balanced driving force of a proxy transmission part of the large screening machine. 2-5 vibration exciter mounting beams are arranged between two side plates of the screen frame; two or four forced synchronous gear exciters are arranged on each vibration exciter mounting beam and are installed together in series through transmission shafts to form a vibration exciter set. And a driving belt pulley is arranged on the transmission shaft at the middle position of each exciter group. The included angle between the action line L of the resultant force generated by the exciter group on each exciter mounting beam and the horizontal plane is beta. And the motor driving device is connected with a driving belt pulley on a transmission shaft of the exciter group, is arranged on the motor support, and the supporting legs of the motor support are positioned on two sides of the screen frame and are connected with the supporting seat of the screening machine. The large-scale sieving machine has the characteristics of balanced stress of the power transmission part, stable performance, compact structure and stable operation, and is suitable for sieving various materials.
Description
Technical Field
The invention belongs to the field of vibration screening machinery, and mainly relates to a parallel force system and a large screening machine driven in a balanced manner, wherein the parallel force system has the advantages of uniform stress on a power part and a screen frame, high processing capacity and high screening efficiency.
Background
In the existing large-scale linear vibrating screen, if the width of the screen surface is 4.2 m-5.5 m and the length is 7.3 m-12 m, the structure of a vibrator for driving the screen machine to work usually adopts a gear forced synchronous vibration exciter, namely a box type vibrator with two shafts of gears and an external forced synchronous eccentric block. The large linear vibrating screen needs 2-4 vibrators, one vibrator installed over the screen frame is installed on the crossbeam, and the driving motor is installed on one side of the screen machine. The structure causes unbalanced transmission of driving force of the transmission part, unbalanced stress of the whole screen frame, poor rigidity, low performance of the vibration exciter, short service life of the bearing and difficult improvement of the operation reliability of the screen frame. The structure also causes that the total exciting force can not be increased, and directly influences the processing capacity and the screening efficiency of the vibrating screen.
Disclosure of Invention
The invention aims to provide a large screening machine with parallel force system and balanced driving, wherein resultant force action lines of all sets of vibration exciters of the screening machine are parallel, a driving device of the vibration exciters is positioned in the middle position above a screening box, and a power transmission part is stressed uniformly and has stable and reliable performance.
The invention is realized by the following technical scheme, which comprises a screen frame, a screen surface, a vibration exciter, a motor driving device, a vibration damping spring and a supporting seat, wherein the screen frame is arranged on the supporting seat through the vibration damping spring, and the vibration exciter is arranged on the screen frame through a vibration exciter mounting beam, and the invention is characterized in that: 2-5 vibration exciter mounting beams are independently arranged between two side plates of the screen frame; two or four gear forced synchronous vibration exciters are uniformly arranged on each vibration exciter mounting beam, and the two or four gear forced synchronous vibration exciters are connected in series through a transmission shaft to form a vibration exciter set; a driving belt pulley is arranged on the transmission shaft in the middle of each exciter group; the included angle between the action line L of the resultant force generated by the exciter group on each exciter mounting beam and the horizontal plane is beta; and the motor driving device is connected with a driving belt pulley on a transmission shaft of the exciter group and is arranged above the motor support, and the supporting legs of the motor support are positioned on two sides of the screen frame and are connected with the supporting seat of the screening machine.
When the number of the vibration exciter mounting beams arranged between the two side plates of the screen frame is three or five, the action lines L of the resultant force generated by the vibration exciter group on the middle vibration exciter mounting beam pass through the participating vibration gravity center G of the screen machine, and the action lines L of the resultant force generated by the vibration exciter groups on the rest vibration exciter mounting beams are symmetrical to and parallel to the participating vibration gravity center G of the screen machine in the longitudinal plane passing through the participating vibration gravity center G of the screen machine; when the number of the vibration exciter mounting beams arranged between the two side plates of the screen frame is two or four, the vibration exciter groups on the vibration exciter mounting beams generate the action lines L of the resultant force, and are symmetrical and parallel to the vibration participating gravity centers G of the screen machine in the longitudinal plane passing through the vibration participating gravity centers G of the screen machine.
The included angle beta between the action line L of each exciter group generating resultant force and the horizontal plane is = 30-60 degrees.
The gear forced synchronization vibration exciter is a two-shaft box type vibration exciter with gear forced synchronization and an eccentric block externally arranged.
The driving belt pulley arranged on the transmission shaft at the middle position of each exciter group is positioned in the middle of the transmission shaft.
The invention has the advantages that the driving device of the sieving machine is positioned in the middle of the gear forced synchronous exciter group, the power transmission part is stressed evenly, the performance is reliable, the service life is long, the integral sieving machine has compact structure, and the appearance size and the occupied space are small. A plurality of vibration exciter mounting beams and a plurality of small bearing vibration exciters can be arranged on the screen frame, the rigidity of the screen frame is good, and the operation performance of the vibration exciters is stable. 2-5 gears which are installed in series force the action lines L of the combination force generated by the synchronous exciters to act on the screen frame in parallel, the stress on the whole screen frame is balanced, and the screen machine operates stably and reliably. The large-scale screening machine is suitable for screening various materials.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of FIG. 1;
in the figure, 1 is a screen frame, 2 is a screen surface, 3 is a vibration exciter, 4 is a motor driving device, 5 is a damping spring, 6 is a motor bracket, 7 is a vibration exciter mounting beam, 8 is a side plate and 9 is a supporting seat; g is the vibration center of gravity of the screening machine, L is the action line of the resultant force of the series vibration exciters, and beta is the included angle between L and the horizontal plane.
Detailed Description
The following description of the embodiments of the invention refers to the accompanying drawings:
including reel 1, sifter 2, vibration exciter 3, motor drive 4, damping spring 5 and supporting seat 9, reel 1 passes through damping spring 5 to be installed on supporting seat 9, and vibration exciter 3 passes through vibration exciter installation roof beam 7 to be installed on reel 1. The width of the screening machine is 4.9 meters, the length of the screening machine is 12 meters, and three or two vibration exciter mounting beams 7 are independently arranged between two side plates 8 of the screen frame 1. Four gear forced synchronous vibration exciters 3 are transversely and uniformly arranged on each vibration exciter mounting beam 7, and the four gear forced synchronous vibration exciters 3 are connected in series through transmission shafts to form a vibration exciter set. A driving belt pulley is arranged on the transmission shaft at the middle position of each exciter group; the included angle between the action line L of the resultant force generated by the exciter set on each exciter mounting beam 7 and the horizontal plane is beta =45 degrees. And the motor driving device 4 connected with the driving belt pulley on the transmission shaft of the exciter group is arranged above the motor support 6, and the supporting legs of the motor support 6 are positioned at two sides of the screen frame 1 and are connected with the supporting seat 9 of the screening machine.
One way is that when the number of the vibration exciter mounting beams 7 mounted between the two side plates 8 of the screen frame 1 is three, the line of action L of the force generated by the vibration exciter set on the middle vibration exciter mounting beam 7 is symmetrical to the gravity center G of the screen machine in the longitudinal plane passing through the gravity center G of the screen machine, and the lines of action L of the force generated by the vibration exciter sets on the other two vibration exciter mounting beams 7 are parallel to each other. The three vibration exciters are arranged on the beam 7 and are respectively driven by three motors.
Alternatively, when two vibration exciter mounting beams 7 are provided between the two side plates 8 of the screen frame 1, the vibration exciter groups on the vibration exciter mounting beams 7 generate lines of action L of the resultant force, which are symmetrical with respect to the screen machine resonance center of gravity G in a longitudinal plane passing through the screen machine resonance center of gravity G and are parallel to each other. The two vibration exciters are arranged on the beam 7 and are respectively driven by two motors.
The gear forced synchronization vibration exciter 3 is a two-shaft box type vibration exciter with gear forced synchronization and an external eccentric block. Each exciter bearing type is a self-aligning roller bearing 22322.
Claims (4)
1. The utility model provides a parallel force system and balanced driven large-scale screening machine, includes reel (1), sifter (2), vibration exciter (3), motor drive (4), damping spring (5) and supporting seat (9), and install on supporting seat (9) through damping spring (5) reel (1), and vibration exciter (3) are installed on reel (1) through vibration exciter installation roof beam (7), characterized by: 2-5 vibration exciter mounting beams (7) are independently arranged between two side plates (8) of the screen frame (1); two or four gear forced synchronous vibration exciters are uniformly arranged on each vibration exciter mounting beam (7), and are mounted together in series through a transmission shaft to form a vibration exciter set; a driving belt pulley is arranged on the transmission shaft at the middle position of each exciter group; the included angle between the action line L of the resultant force generated by the exciter group on each exciter mounting beam (7) and the horizontal plane is beta; the motor driving device (4) connected with the driving belt pulley on the transmission shaft of the exciter group is arranged above the motor support (6), and the supporting legs of the motor support (6) are positioned on two sides of the screen frame (1) and connected with the supporting seat (9) of the screening machine.
2. The large scale screen machine with parallel force and balanced drive according to claim 1, characterized by: when the number of the vibration exciter mounting beams (7) arranged between the two side plates (8) of the screen frame (1) is three or five, the action line L of the combination force generated by the vibration exciter on the middle vibration exciter mounting beam (7) passes through the participating vibration gravity center G of the screen machine, and the action lines L of the combination force generated by the vibration exciter on the rest vibration exciter mounting beams (7) are symmetrical to and parallel to the participating vibration gravity center G of the screen machine in the longitudinal plane passing through the participating vibration gravity center G of the screen machine; when the vibration exciter mounting beams (7) arranged between the two side plates (8) of the screen frame (1) are two or four, the vibration exciter groups on the vibration exciter mounting beams (7) generate acting lines L of force, and the vibrating centers G of the screen machine are symmetrical and parallel to each other in a longitudinal plane passing through the vibrating centers G of the screen machine.
3. The large scale screen grader with parallel force system and balanced drive according to claim 1 wherein: the included angle beta between the action line L of the resultant force generated by each exciter group and the horizontal plane is = 30-60 degrees.
4. The large scale screen machine with parallel force and balanced drive according to claim 1, characterized by: the gear forced synchronization vibration exciter is a two-shaft box type vibration exciter with gear forced synchronization and an eccentric block externally arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210767766.7A CN115156034A (en) | 2022-07-01 | 2022-07-01 | Large screening machine with parallel force system and balanced driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210767766.7A CN115156034A (en) | 2022-07-01 | 2022-07-01 | Large screening machine with parallel force system and balanced driving |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115156034A true CN115156034A (en) | 2022-10-11 |
Family
ID=83488967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210767766.7A Pending CN115156034A (en) | 2022-07-01 | 2022-07-01 | Large screening machine with parallel force system and balanced driving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115156034A (en) |
-
2022
- 2022-07-01 CN CN202210767766.7A patent/CN115156034A/en active Pending
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