Vibration synchronization adjustment transmission mechanism of biaxial elliptical screen

Abstract

This application discloses a vibration synchronization adjustment transmission mechanism for a biaxial elliptical screen, relating to the field of vibrating screening machine technology. The application includes a support frame, on which a screen box is connected via a side spring damping device. Two vibrating shafts are rotatably mounted on the screen box. It also includes a synchronization transmission mechanism comprising two rotating shafts coaxially mounted on the support frame. This application utilizes two rotatable linkage shafts and two rotating shafts. A motor drives the two rotating shafts to rotate synchronously in opposite directions. The two rotating shafts, through the cooperation of a first pulley, a second pulley, and a transmission belt, first drive the two linkage shafts to rotate synchronously in opposite directions. The two linkage shafts then drive the two vibrating shafts to rotate synchronously in opposite directions via a flexible rubber belt connection. This not only reduces the speed difference between the two vibrating shafts but also prevents the vibration stress generated by the rotation of the two vibrating shafts from being transmitted and affecting the motor, thus making the transmission smoother, ensuring a stable vibration trajectory, and ensuring screening efficiency.

Description

Technical Field

[0001] This application relates to the field of vibrating screen technology, specifically to a vibration synchronous adjustment transmission mechanism for a biaxial elliptical screen. Background Technology

[0002] Currently, vibrating screens can be broadly classified according to their vibration trajectory into: circular vibrating screens, linear vibrating screens, and elliptical vibrating screens. Among them, the dual-axis elliptical screen uses two unbalanced shafts to move relative to each other to generate high-energy elliptical motion, thereby achieving strong separation of the screen surface material to the left and right to ensure the highest screening accuracy.

[0003] Existing dual-shaft elliptical screens are typically equipped with two motors, each connected to a vibrating shaft via a pulley assembly. Since the rotation of the vibrating shafts drives the screen box to achieve high-energy elliptical motion, the vibrating shafts will undergo relative displacement. Therefore, the motors are usually not directly fixed to the support frame, but rather mounted on elastic supports. In actual operation, the motors will also wobble. This method has certain shortcomings. The two vibrating shafts need to rotate synchronously in opposite directions so that the centrifugal forces of the eccentric blocks on the vibrating shafts cancel each other out horizontally and superimpose vertically, forming an elliptical vibration trajectory. This requires the two motors to operate synchronously at the same speed, ensuring that the two vibrating shafts rotate at the same speed. However, since the motors are connected to the vibrating shafts via pulley assemblies, when the motors and vibrating shafts wobble, the running trajectory of the pulley assembly will also change, making it prone to slack during movement. This makes it difficult for the motors to effectively control the speed of the vibrating shafts. A large difference in speed between the two vibrating shafts can lead to disordered vibration trajectories, affecting screening efficiency and even causing equipment resonance damage. Therefore, this application proposes a vibration synchronization adjustment transmission mechanism for dual-shaft elliptical screens. Utility Model Content

[0004] The purpose of this application is to provide a vibration synchronous adjustment transmission mechanism for a biaxial elliptical screen in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application specifically adopts the following technical solution:

[0006] The vibration synchronization adjustment transmission mechanism of the biaxial elliptical screen includes a support frame, on which a screen box is connected via a side spring damping device. Two vibration shafts are rotatably mounted on the screen box. The mechanism also includes:

[0007] A synchronous transmission mechanism includes two rotating shafts coaxially rotatably mounted on a support. The support is provided with a drive unit for driving the two rotating shafts to rotate synchronously in opposite directions. Two linkage shafts are rotatably mounted on the support, and the two linkage shafts are coaxially corresponding to two vibration shafts. A connecting plate is installed at the opposite end of each linkage shaft and vibration shaft. Several rubber belts are detachably installed between the two connecting plates. A first pulley is fixed on each of the two rotating shafts, and a second pulley is fixed on each of the two linkage shafts. A transmission belt is wound between the two first pulleys and the two second pulleys.

[0008] Furthermore, the drive unit includes a motor mounted on a bracket, and driven bevel gears are fixedly mounted at the opposite ends of the two rotating shafts. A transmission bevel gear that meshes with the teeth of the two driven bevel gears is fixedly mounted on the output shaft of the motor. An insertion hole is provided at the end of one rotating shaft, and an insertion rod is provided at the end of the other rotating shaft, and the insertion rod is rotatably inserted into the insertion hole.

[0009] Furthermore, a snap-fit ​​plate is movably provided on one side of the connecting plate, and the connecting plate and the snap-fit ​​plate clamp and fix the rubber belt by the cooperation of bolts and nuts.

[0010] Furthermore, a spring washer is movably fitted onto the bolt.

[0011] Furthermore, several snap-fit ​​grooves are provided on the opposite sides of the connecting plate and the snap-fit ​​plate, and the end of the rubber strip is movably inserted into two corresponding snap-fit ​​grooves.

[0012] Furthermore, a spline slot is provided on one side of the connecting plate, and a spline plug is constructed on the snap-fit ​​plate to engage with the spline slot.

[0013] Furthermore, the bracket is provided with two adjustment mechanisms, which are used to adjust the tension of the two transmission belts respectively.

[0014] Furthermore, the adjustment mechanism includes a slide rod slidably inserted into the bracket, one end of the slide rod being connected to a mounting base, a pressure roller being rotatably mounted on the mounting base and rollingly overlapping with the transmission belt, an abutment spring sleeved on the slide rod being installed between the mounting base and the bracket, and a guide rod having its end sliding through the bracket being connected to the mounting base.

[0015] The beneficial effects of this application are as follows: In this application, by rotating two linkage shafts and two rotating shafts, a motor drives the two rotating shafts to rotate synchronously in opposite directions. The two rotating shafts first drive the two linkage shafts to rotate synchronously in opposite directions through the cooperation of the first pulley, the second pulley and the transmission belt. The two linkage shafts then drive the two vibrating shafts to rotate synchronously in opposite directions through the soft connection of the rubber belt. This not only reduces the speed difference between the two vibrating shafts, but also ensures that the vibration stress generated by the rotation of the two vibrating shafts will not be transmitted to affect the motor, thereby making the transmission smoother, ensuring a smooth vibration trajectory and ensuring screening efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of this application;

[0017] Figure 2 This is a three-dimensional structural diagram of the synchronous transmission mechanism of this application;

[0018] Figure 3 This is a plan view of the synchronous transmission mechanism of this application;

[0019] Figure 4 This is a schematic diagram of the connection between the vibration shaft and the linkage shaft in this application;

[0020] Figure 5 This is an exploded view of part of the three-dimensional structure of this application;

[0021] Figure 6 This application Figure 2 Enlarged view of point A in the middle;

[0022] Figure 7 This application Figure 2 Enlarged view of section B in the middle.

[0023] Reference numerals: 1. Support; 2. Screen box; 3. Vibrating shaft; 4. Synchronous transmission mechanism; 5. Snap-fit ​​plate; 6. Bolt; 7. Nut; 8. Spring washer; 9. Snap-fit ​​groove; 10. Spline slot; 11. Spline insert; 12. Adjustment mechanism; 401. Rotating shaft; 402. Linkage shaft; 403. Connecting plate; 404. Rubber belt; 405. First pulley; 406. Second pulley; 407. Transmission belt; 408. Drive unit; 4081. Motor; 4082. Driven bevel gear; 4083. Transmission bevel gear; 4084. Insertion hole; 4085. Insertion rod; 1201. Slide rod; 1202. Mounting base; 1203. Pressure roller; 1204. Contact spring; 1205. Guide rod. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0025] like Figures 1-7 As shown, an embodiment of this application proposes a vibration synchronization adjustment transmission mechanism for a biaxial elliptical screen, including a support 1. A screen box 2 is connected to the support 1 via a side spring damping device. Preferably, four side spring damping devices are erected and connected to the four corners of the screen box 2. Two vibration shafts 3 are rotatably mounted on the screen box 2 via bearing seats. The two vibration shafts 3 are distributed at an angle from top to bottom. An eccentric block is fixed on the vibration shaft 3. By setting the eccentric block, the two vibration shafts 3 generate high-energy elliptical motion when rotating synchronously in opposite directions, thereby realizing the function of vibration screening. This is a distinguishing feature of the prior art of this application.

[0026] The distinguishing technical features of this application also include: a synchronous transmission mechanism 4, comprising two rotating shafts 401 coaxially rotatably mounted on a support 1. The support 1 is provided with a drive unit 408 for driving the two rotating shafts 401 to rotate synchronously in opposite directions. Although the two rotating shafts 401 are coaxially mounted, they can rotate synchronously in opposite directions under the drive of the drive unit 408. Two linkage shafts 402 are rotatably mounted on the support 1, and each linkage shaft 402 corresponds coaxially to one of the two vibrating shafts 3. A connecting plate 403 is installed at the opposite end of each linkage shaft 402 and vibrating shaft 3. Several rubber belts 404 are detachably mounted between the two connecting plates 403. Preferably, the rubber belts 404 are arranged in a circular array. When the linkage shaft 402 rotates, the rubber belts 404 rotate and pull the vibrating shaft 3 to rotate synchronously. The rubber belts 404 can serve as both a connector between the vibrating shaft 3 and the linkage shaft 402 and a flexible connection, allowing the vibrating shaft 3 to sway with the screen box 2 without affecting the linkage shaft. 402, which allows the linkage shaft 402 to rotate stably. A first pulley 405 is fixed on each of the two rotating shafts 401, and a second pulley 406 is fixed on each of the two linkage shafts 402. A transmission belt 407 is wound between the two first pulleys 405 and the two second pulleys 406 respectively. When the drive unit 408 drives the two rotating shafts 401 to rotate synchronously in opposite directions, the two transmission belts 407, in conjunction with the drive unit 408, drive the two linkage shafts 402 to rotate synchronously in opposite directions. The linkage shafts 402, under the action of the rubber belt 404, can then drive the two vibrating shafts 3 to rotate synchronously in opposite directions. In actual operation, the drive unit 408 provides stable drive, and the two transmission belts 407 also provide stable transmission. While achieving synchronous reverse rotation of the two vibrating shafts 3, the speed difference between the two vibrating shafts 3 is reduced. The vibration stress generated by the rotation of the two vibrating shafts 3 will not be transmitted and affect the transmission belts 407 and the drive unit 408, thus making the transmission smoother, ensuring a stable vibration trajectory, and ensuring screening efficiency.

[0027] In this scheme, two linkage shafts 402 and two rotating shafts 401 are rotatably configured. The drive unit 408 drives the two rotating shafts 401 to rotate synchronously in opposite directions. The two rotating shafts 401 first drive the two linkage shafts 402 to rotate synchronously in opposite directions through the cooperation of the first pulley 405, the second pulley 406 and the transmission belt 407. The two linkage shafts 402 then drive the two vibrating shafts 3 to rotate synchronously in opposite directions through the soft connection of the rubber belt 404. This not only reduces the speed difference between the two vibrating shafts 3, but also ensures that the vibration stress generated by the rotation of the two vibrating shafts 3 will not be transmitted to and affect the transmission belt 407 and the drive unit 408, thereby making the transmission smoother, ensuring a smooth vibration trajectory and ensuring screening efficiency.

[0028] like Figure 6 The specific structure of the drive unit 408 of this application is disclosed to drive two rotating shafts 401 to rotate synchronously in opposite directions. The drive unit 408 includes a motor 4081 mounted on a bracket 1. Driven bevel gears 4082 are fixedly mounted on opposite ends of the two rotating shafts 401. A transmission bevel gear 4083 is fixedly mounted on the output shaft of the motor 4081, meshing with the teeth of the two driven bevel gears 4082. When the motor 4081 performs work, its output shaft drives the transmission bevel gears 4083 to rotate. Since the two driven bevel gears 4082 are arranged opposite each other and both mesh with the teeth of the transmission bevel gears 4083, when the motor 4081 operates, the meshing of the teeth of the transmission bevel gears 4083 and the driven bevel gears 4082 drives the two rotating shafts 401 to rotate synchronously in opposite directions. The design of the drive unit 408 allows only one motor 4081 to be used to drive the two rotating shafts 401. The two vibration shafts 3 rotate synchronously in opposite directions. Compared with the traditional method of relying on two motors to drive the two vibration shafts 3 separately, this method reduces energy consumption and avoids the need to adjust parameters of the two motors to ensure the rotational speed of the two vibration shafts 3. It can effectively reduce the speed difference between the two vibration shafts 3. One of the rotating shafts 401 has a socket 4084 at its end, and the other rotating shaft 401 has a rod 4085 at its end, which is rotatably inserted into the socket 4084. By opening a socket 4084 on one rotating shaft 401 and constructing a rod 4085 on the other rotating shaft 401 that is rotatably connected to the socket 4084, the normal reverse rotation of the two rotating shafts 401 is not affected. At the same time, the two rotating shafts 401 can support each other, so that each rotating shaft 401 has two rotational support points, thereby making its rotation more stable.

[0029] like Figure 5As shown, a further technical solution for the installation of the rubber belt 404 is disclosed in this application. A snap-fit ​​plate 5 is movably provided on one side of the connecting plate 403. The connecting plate 403 and the snap-fit ​​plate 5 clamp and fix the rubber belt 404 through the cooperation of bolts 6 and nuts 7. Preferably, both ends of the rubber belt 404 are provided with through-holes for installation. Both the snap-fit ​​plate 5 and the connecting plate 403 are provided with several through-holes for installation. When installing the rubber belt 404, the snap-fit ​​plate 5 and the connecting plate 403 are aligned coaxially. The end of the rubber belt 404 is placed between the snap-fit ​​plate 5 and the connecting plate 403. Then, the end of the bolt 6 is moved through the mounting holes on the connecting plate 403, the rubber belt 404 and the snap-fit ​​plate 5 in sequence. Then, the nut 7 is tightened. Not only is the bolt 6, nut 7 and mounting holes locked, but the snap-fit ​​plate 5 can also be used in conjunction with the connecting plate 403 to clamp and fix the rubber belt 404, so that the clamped area of ​​the rubber belt 404 is large, thus ensuring its stability.

[0030] like Figure 5 As shown, this application discloses a further technical solution for fixing the rubber belt 404. A spring washer 8 is movably sleeved on the bolt 6. When the linkage shaft 402 rotates, it is driven by the rubber belt 404 to rotate the vibration shaft 3. The rubber belt 404 will deform and bear a large stress. By sleeved with the spring washer 8 on the bolt 6, when the nut 7 is tightened, the nut 7 will squeeze the spring washer 8, and the spring washer 8 will apply a counter-resisting force to the nut 7. The counter-resisting force makes it difficult for the nut 7 to rotate loosely, thereby ensuring the stability of the rubber belt 404 after fixing, and ensuring that the linkage shaft 402 can stably drive the vibration shaft 3 to rotate.

[0031] like Figure 5 As shown, this application discloses a further technical solution for fixing the rubber band 404. Several snap-fit ​​grooves 9 are provided on opposite sides of the connecting disc 403 and the snap-fit ​​disc 5. The end of the rubber band 404 is movably inserted into two corresponding snap-fit ​​grooves 9. The snap-fit ​​grooves 9 serve a positioning function during the installation of the rubber band 404, facilitating the smooth sequential penetration of the bolts 6 through the mounting holes on the connecting disc 403, the rubber band 404, and the snap-fit ​​disc 5. Preferably, the thickness of the two corresponding snap-fit ​​grooves 9 is lower than the thickness of the rubber band 404, ensuring that the clamping surfaces of the snap-fit ​​disc 5 and the connecting disc 403 do not contact each other after the rubber band 404 is inserted into the two snap-fit ​​grooves 9, thus ensuring effective and stable clamping and fixing of the rubber band 404. Simultaneously, the snap-fit ​​grooves 9 also serve a reinforcing function, allowing one end of the rubber band 404 to be fixed using a single set of bolts 6 and nuts 7. This not only improves the convenience of installation or disassembly but also enhances the torsional strength of the rubber band 404, snap-fit ​​disc 5, and connecting disc 403 after connection.

[0032] like Figure 5As shown, a further technical solution for fixing the rubber band 404 is disclosed in this application. A spline slot 10 is provided on one side of the connecting plate 403, and a spline plug 11 is constructed on the snap-fit ​​plate 5 to engage with the spline slot 10. Through the engagement of the spline slot 10 and the spline plug 11, the fixing of the snap-fit ​​plate 5 and the connecting plate 403 does not rely solely on the engagement of the bolt 6 and the nut 7, which enhances the anti-torsional performance after the connection. At the same time, when installing the rubber band 404, the spline plug 11 is first inserted into the spline slot 10, which can play a positioning role in the installation of the rubber band 404. After several rubber bands 404 are respectively inserted into several snap-fit ​​slots 9, the nuts 7 are tightened in sequence for fixing.

[0033] like Figure 3 As shown, this application discloses a further technical solution for the transmission of the transmission belt 407. The bracket 1 is provided with two adjustment mechanisms 12, which are used to adjust the tension of the two transmission belts 407 respectively. Under long-term transmission stress, the transmission belt 407 is prone to slight loosening due to transmission fatigue. By setting the adjustment mechanism 12 to adjust its tension, it is ensured that the transmission belt 407 can transmit stably, thereby further ensuring a smooth vibration trajectory and ensuring screening efficiency.

[0034] like Figure 7 As shown, this application discloses a further technical solution for the transmission of the drive belt 407. The adjusting mechanism 12 includes a slide rod 1201 slidably inserted into the bracket 1. One end of the slide rod 1201 is connected to a mounting base 1202. A pressure roller 1203 is rotatably mounted on the mounting base 1202 and rolls against the drive belt 407. An abutment spring 1204 sleeved on the slide rod 1201 is installed between the mounting base 1202 and the bracket 1. A guide rod 1205 with its end sliding through the bracket 1 is connected to the mounting base 1202. The guide rod 1205 guides the mounting base 1202 to ensure that the pressure roller 1203 effectively abuts against the drive belt 407. Under the elastic force of the spring 1204, the pressure roller 1203 contacts the transmission belt 407, thus applying a contact force to the transmission belt 407. The pressure roller 1203 and the transmission belt 407 roll and overlap. While applying the contact force, it does not affect the normal transmission of the transmission belt 407, so that the transmission belt 407 is effectively taut and wound around the first pulley 405 and the second pulley 406. At the same time, the contact force can be elastically and adaptively adjusted by the elastic force of the contact spring 1204 without human intervention, ensuring the stable transmission of the transmission belt 407 and ensuring that the driving stress of the motor 4081 can effectively act on the two vibration shafts 3, ensuring the stability of the transmission.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vibration synchronous adjusting transmission mechanism of a double-shaft elliptical screen, comprising a support (1), a screen box (2) connected to the support (1) through a side spring damping device, and two vibration shafts (3) rotatably arranged on the screen box (2), characterized in that, Also includes: The synchronous transmission mechanism (4) includes two rotating shafts (401) coaxially rotatably mounted on a bracket (1). The bracket (1) is provided with a drive unit (408) for driving the two rotating shafts (401) to rotate synchronously in opposite directions. The bracket (1) is rotatably mounted with two linkage shafts (402), and the two linkage shafts (402) are coaxially corresponding to two vibration shafts (3). The opposite ends of the linkage shafts (402) and vibration shafts (3) are each equipped with a connecting plate (403). Several rubber belts (404) are detachably mounted between the two connecting plates (403). The two rotating shafts (401) are each fixed with a first pulley (405), and the two linkage shafts (402) are each fixed with a second pulley (406). The two first pulleys (405) are respectively wound with a transmission belt (407) between the two second pulleys (406).

2. The dual-shaft elliptical screen vibration synchronization adjustment drive mechanism according to claim 1, characterized in that, The drive unit (408) includes a motor (4081) mounted on a bracket (1). Both of the two rotating shafts (401) are fixed with driven bevel gears (4082) at their opposite ends. The output shaft of the motor (4081) is fixed with a transmission bevel gear (4083) that meshes with the teeth of the two driven bevel gears (4082). One of the rotating shafts (401) has an insertion hole (4084) at its end, and the other rotating shaft (401) has an insertion rod (4085) at its end, which is rotatably inserted into the insertion hole (4084).

3. The vibration synchronization adjustment transmission mechanism of the biaxial elliptical screen according to claim 1, characterized in that, A snap-fit ​​plate (5) is movably provided on one side of the connecting plate (403). The connecting plate (403) and the snap-fit ​​plate (5) clamp and fix the rubber belt (404) by the cooperation of bolts (6) and nuts (7).

4. The vibration synchronization adjustment transmission mechanism of the biaxial elliptical screen according to claim 3, characterized in that, A spring washer (8) is movably fitted on the bolt (6).

5. The vibration synchronization adjustment transmission mechanism of the biaxial elliptical screen according to claim 3, characterized in that, The connecting plate (403) and the snap-fit ​​plate (5) are provided with several snap-fit ​​grooves (9) on opposite sides, and the end of the rubber strip (404) is movably inserted into the corresponding two snap-fit ​​grooves (9).

6. The vibration synchronization adjustment transmission mechanism of the biaxial elliptical screen according to claim 3, characterized in that, A spline slot (10) is provided on one side of the connecting plate (403), and a spline plug (11) is constructed on the snap-fit ​​plate (5) to engage with the spline slot (10).

7. The vibration synchronization adjustment transmission mechanism of the biaxial elliptical screen according to claim 1, characterized in that, The bracket (1) is provided with two adjustment mechanisms (12), which are used to adjust the tension of the two transmission belts (407).

8. The vibration synchronization adjustment transmission mechanism of the biaxial elliptical screen according to claim 7, characterized in that, The adjustment mechanism (12) includes a slide rod (1201) slidably inserted on the bracket (1), one end of the slide rod (1201) is connected to a mounting base (1202), a pressure roller (1203) is rotatably arranged on the mounting base (1202) and the pressure roller (1203) rolls and overlaps with the transmission belt (407), an abutment spring (1204) sleeved on the slide rod (1201) is installed between the mounting base (1202) and the bracket (1), and a guide rod (1205) with its end sliding through the bracket (1) is connected to the mounting base (1202).

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