A locking structure of master and slave shafts of a vibration exciter

Abstract

The utility model discloses a kind of main driven shaft locking structures of exciter, it is related to material screening relevant technical field.The utility model includes main body component and fixed component, main body component includes pedestal, support rod is fixed in pedestal outer circumferential side surface corner, support rod is fixed with bottom frame away from one end of pedestal, motor is fixed with one side of pedestal, main shaft assembly is also fixed in pedestal inner chamber.The utility model is set by the fixed component, use this time and can be fixed to pedestal on exciter, rotate threaded rod, threaded rod rotation will drive the down movement of clamping piece, simultaneously, due to threaded rod is double-end stud, threaded rod down movement will make the up movement of connecting piece simultaneously, this makes two clamping pieces simultaneously towards the movement of clamping piece, drive four clamping pieces to draw close to center, finally fixed clamping hold main drive shaft assembly, solved the problem that most of existing scheme is fixed by bearing seat, need specially according to the production of exciter main shaft inner diameter, without the problem of universality.

Description

Technical Field

[0001] This utility model belongs to the technical field of material screening, and in particular relates to a locking structure for the main and driven shafts of a vibrator. Background Technology

[0002] A circular gyratory screen is a screening device designed to simulate manual screening actions and principles. Its screen surface is circular, and during operation, the screen body performs a three-dimensional gyratory motion at a certain angle, causing the material to create a complex motion trajectory on the screen surface, thus achieving efficient screening. It features high screening accuracy, large throughput, and low energy consumption, and is widely used in material grading in industries such as mining, chemicals, and food. The vibrator installed on the circular gyratory screen is the core component providing power to the screen body. It typically consists of a motor and eccentric blocks. The motor drives the eccentric blocks to rotate at high speed, generating centrifugal force, forming a periodic excitation force that drives the screen body to gyrate along a predetermined trajectory. The magnitude and frequency of this excitation force can be controlled by adjusting parameters such as the weight and rotational speed of the eccentric blocks, directly affecting the working efficiency and screening effect of the screening equipment.

[0003] However, it still has the following drawbacks in actual use: the existing gyratory screen and the main and slave shafts of the vibrator are mostly connected by bearing housings. This solution has certain disadvantages, namely, the bearing housings need to know the model and size of the polarizer and be specially manufactured to be able to connect with the main shaft of the vibrator, so it is not universal. Utility Model Content

[0004] The purpose of this utility model is to provide a locking structure for the main and driven shafts of a vibrator. This utility model solves the problem that most existing solutions are fixed by bearing seats, which require special production according to the inner diameter of the vibrator main shaft and lack universality.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a locking structure for the main and driven shafts of a vibrator, including a main body assembly and a fixing assembly. The main body assembly includes a base, a support rod fixed at the corner of the outer periphery of the base, a bottom frame fixed at the end of the support rod away from the base, a motor fixed on one side of the base, a main shaft assembly fixed in the inner cavity of the base, and a transmission wheel set. The main shaft assembly is connected to the motor power shaft through the transmission wheel set. A main drive shaft assembly is fixed at the end of the main shaft assembly away from the transmission wheel set, and a polarization block is fixed on the outer periphery of the main drive shaft assembly. The fixing component includes a connecting rod ball-connected to the inner circumferential side of the bottom frame, a central member ball-connected to the end of the connecting rod away from the bottom frame, a spring-loaded pull rod fixed to the inner circumferential side of the central member, a clamping member fixed to the telescopic end of the spring-loaded pull rod, and a number of universal balls provided on the clamping surface of the clamping member; The top of the central component is threaded with a threaded rod. One end of the threaded rod is screwed into the inner cavity of the central component and is rotatably connected to a locking component. A connecting component is also vertically and movably connected to the outer periphery of the central component. One end of the connecting component is threaded to the outer periphery of the threaded rod, and another locking component is fixed to the end of the connecting component away from the threaded rod.

[0006] Furthermore, four sets of support rods are provided, distributed symmetrically at the four corners of the base.

[0007] Furthermore, the transmission wheel assembly includes a first transmission wheel rotatably connected to the bottom surface of the base, a motor power shaft passing through the bottom wall of the base and connected to the first transmission wheel, and a second transmission wheel fixed at the center of the bottom end of the main shaft assembly. The same transmission belt is provided on the outer periphery of the first and second transmission wheels.

[0008] Furthermore, the fixing assembly also includes a movable block movably connected to the outer periphery of the connecting rod, with a spring fixed at both ends of the movable block.

[0009] Furthermore, the connecting rod, spring, movable block, elastic rod, clamping component and universal ball located on the same side are grouped together, and four groups are arranged symmetrically around the main shaft assembly.

[0010] Furthermore, the threaded rod is a double-ended stud, with the center piece and connecting piece set on two opposite threads of the threaded rod, and the two engaging pieces at both ends of the clamping piece are set in a mirror image.

[0011] This utility model has the following beneficial effects: This invention, through its fixed assembly, allows the vibrator to be fixed to the base during use. Rotating the threaded rod causes the engaging parts to move downwards. Simultaneously, because the threaded rod is a double-ended stud, the downward movement of the threaded rod causes the connecting parts to move upwards. This causes the two engaging parts to move towards the clamping parts, pulling the four clamping parts closer to the center, ultimately fixing and holding the main drive shaft assembly. This solves the problem that existing solutions mostly rely on bearing seats for fixing, requiring special production based on the inner diameter of the vibrator main shaft, and lacking versatility.

[0012] This invention, through the setting of a fixed component, has a movable block on each connecting rod of the device. With the action of the spring and the vibrator, the swaying force of the gyratory screen is amplified, further improving the performance of the equipment and solving the problem that the polarization force generated by the vibrator may be insufficient in the existing solution. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the overall appearance of this utility model; Figure 2 This is a schematic diagram of the overall appearance of the bottom surface of this utility model; Figure 3 This is a schematic diagram of the internal structure of the bottom frame of this utility model; Figure 4 This is a cross-sectional structural diagram of the movable block of this utility model; Figure 5 This is a schematic diagram of the structure of the clamping component and the universal ball of this utility model.

[0014] Figure label: 1. Main body components; 11. Base; 12. Support rod; 13. Base frame; 14. Motor; 15. Transmission wheel assembly; 151. Transmission wheel one; 152. Transmission wheel two; 153. Transmission belt; 16. Main shaft assembly; 17. Main drive shaft assembly; 18. Polarizing block; 2. Fixed component; 21. Connecting rod; 22. Spring; 23. Moving block; 24. Center component; 25. Elastic tie rod; 26. Clamping component; 261. Universal ball; 27. Threaded rod; 28. Engaging component; 29. ​​Connecting component. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] Please see Figure 1-5 As shown, this utility model is a locking structure for the main and driven shafts of a vibrator, including a main body assembly 1 and a fixing assembly 2. The main body assembly 1 includes a base 11, a support rod 12 is fixed at the corner of the outer periphery of the base 11, a bottom frame 13 is fixed at the end of the support rod 12 away from the base 11, a motor 14 is fixed on one side of the base 11, and a main shaft assembly 16 is also fixed in the inner cavity of the base 11. The main body assembly 1 also includes a transmission wheel set 15. The main shaft assembly 16 is connected to the power shaft of the motor 14 through the transmission wheel set 15. A main drive shaft assembly 17 is fixed at the end of the main shaft assembly 16 away from the transmission wheel set 15, and a polarizing block 18 is also fixed on the outer periphery of the main drive shaft assembly 17. The base 11 is the base of the gyratory screen, which is used to support and place the gyratory screen body and the vibrator. The bottom end of the support rod 12 can move on the base 11 to a certain extent, so that the gyratory screen can swing and screen normally. The bottom frame 13 is used to install the gyratory screen mesh and other structures. The main shaft assembly 16, the main drive shaft assembly 17 and the polarization block 18 are the main structures of the vibrator, which are existing components and will not be described in detail here.

[0017] The fixing component 2 includes a connecting rod 21 ball-jointed to the inner circumferential side of the bottom frame 13. A center member 24 is ball-jointed to the end of the connecting rod 21 away from the bottom frame 13. A spring-loaded pull rod 25 is fixed to the inner circumferential side of the center member 24. A clamping member 26 is fixed to the telescopic end of the spring-loaded pull rod 25. A plurality of universal balls 261 are provided on the clamping surface of the clamping member 26. The connecting rod 21 is used to support the center member 24 and connect it to the bottom frame 13. The clamping member 26 is used to clamp the main drive shaft assembly 17 and fix it. At the same time, the universal balls 261 provided on the clamping surface can keep it rotating.

[0018] The top of the center part 24 is threadedly connected to a threaded rod 27. One end of the threaded rod 27 is screwed into the inner cavity of the center part 24 and is rotatably connected to a locking part 28. The outer periphery of the center part 24 is also vertically movably connected to a connector 29. One end of the connector 29 is threadedly connected to the outer periphery of the threaded rod 27, and another locking part 28 is fixed to the end of the connector 29 away from the threaded rod 27.

[0019] The rotation of the threaded rod 27 causes the engaging member 28 to move downward, encircling all the clamping members 26 and moving them toward the central main drive shaft assembly 17, ultimately clamping the main drive shaft assembly 17. The connecting member 29 allows the threaded rod 27 to rotate, causing the lower engaging member 28 to move upward. The upper and lower engaging members 28 simultaneously encircle the clamping members 26, causing them to continuously contract inward and fix the main drive shaft assembly 17.

[0020] Furthermore, four sets of support rods 12 are provided, which are centrally symmetrically distributed at the four corners of the base 11. The four sets of support rods 12 enable the central member 24 to be supported as stably as possible, thereby increasing the stability of the fixation.

[0021] Furthermore, the transmission wheel assembly 15 includes a transmission wheel 151 rotatably connected to the bottom surface of the base 11. The power shaft of the motor 14 passes through the bottom wall of the base 11 and is connected to the transmission wheel 151. A transmission wheel 152 is also fixed at the center of the bottom end of the main shaft assembly 16. The same transmission belt 153 is provided on the outer periphery of the transmission wheel 151 and the transmission wheel 152. The transmission wheel assembly 15 is mainly used for power transmission of the motor 14, so that the motor 14 ultimately drives the vibrator to operate, generating a polarized force to make the gyratory screen oscillate, and finally achieve screening.

[0022] Furthermore, the fixing component 2 also includes a movable block 23 movably connected to the outer periphery of the connecting rod 21. A spring 22 is fixed at both ends of the movable block 23. When the device is in use, the vibrator rotates, which will cause the movable block 23 to shake. At the same time, since both ends of the connecting rod 21 are ball joints, it can generate a greater shaking force, which can further amplify the effect of the vibrator.

[0023] Furthermore, the connecting rod 21, spring 22, movable block 23, elastic pull rod 25, clamping part 26 and universal ball 261 located on the same side are arranged as a group, and four groups are arranged in a centrally symmetrical manner with the main shaft assembly 16 as the center. The four groups of fixing parts can stabilize and clamp the main drive shaft assembly 17 to a great extent.

[0024] Furthermore, the threaded rod 27 is a double-ended stud, and the center piece 24 and the connecting piece 29 are disposed on two opposite threads of the threaded rod 27. The two engaging pieces 28 disposed at both ends of the clamping piece 26 are mirror images of each other. Only in this way can the engaging pieces 28 on the threaded rod 27 move down while the engaging pieces 28 on the connecting piece 29 move up, so that the two engaging pieces 28 move towards each other and thus encircle the clamping piece 26.

[0025] The specific working principle of this utility model is as follows: When using this device, the vibrator is fixed to the base 11. The bottom end of the main shaft assembly 16 of the vibrator is connected to the motor 14 by the transmission wheel group 15, so that the motor 14 can drive it to rotate, thereby generating a polarization force, which drives the oscillating screen to oscillate for screening. The other end of the main drive shaft assembly 17 is fixedly connected by the fixing component 2. When it needs to be fixed, it is only necessary to rotate the threaded rod 27. The rotation of the threaded rod 27 will drive the locking part 28 to move down. At the same time, since the threaded rod 27 is a double-ended stud... As the threaded rod 27 moves downward, the connecting piece 29 moves upward, causing the two engaging pieces 28 to move towards the clamping piece 26 simultaneously. This drives the four clamping pieces 26 to move towards the center, ultimately securing the main drive shaft assembly 17. The clamping surface of the clamping piece 26 is equipped with multiple universal balls 261, which allow it to be fixed while also rotating, ensuring its normal operation. Additionally, each connecting rod 21 of the device is equipped with a movable block 23, which, along with the spring 22 and the vibrator, intensifies the swaying force of the gyratory screen, further improving the equipment performance.

[0026] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall be protected by the present utility model.

Claims

1. A locking structure for the driving and driven shafts of an exciter, characterized in that: The assembly includes a main body component (1) and a fixing component (2). The main body component (1) includes a base (11). A support rod (12) is fixed at the corner of the outer periphery of the base (11). A bottom frame (13) is fixed at the end of the support rod (12) away from the base (11). A motor (14) is fixed on one side of the base (11). A main shaft assembly (16) is also fixed in the inner cavity of the base (11). The main body component (1) also includes a transmission wheel set (15). The main shaft assembly (16) is connected to the power shaft of the motor (14) through the transmission wheel set (15). A main drive shaft assembly (17) is fixed at the end of the main shaft assembly (16) away from the transmission wheel set (15). A polarizing block (18) is also fixed on the outer periphery of the main drive shaft assembly (17). The fixing component (2) includes a connecting rod (21) ball-connected to the inner peripheral side of the bottom frame (13). A center member (24) is ball-connected to one end of the connecting rod (21) away from the bottom frame (13). An elastic pull rod (25) is fixed to the inner peripheral side of the center member (24). A clamping member (26) is fixed to the telescopic end of the elastic pull rod (25). A plurality of universal balls (261) are provided on the clamping surface of the clamping member (26). The top of the central component (24) is threaded with a threaded rod (27). One end of the threaded rod (27) is screwed into the inner cavity of the central component (24) and rotatably connected to a locking component (28). A connecting component (29) is also vertically movably connected to the outer periphery of the central component (24). One end of the connecting component (29) is threaded to the outer periphery of the threaded rod (27), and another locking component (28) is fixed to the end of the connecting component (29) away from the threaded rod (27).

2. The vibrator master-slave shaft locking structure according to claim 1, characterized in that: The support rods (12) are provided in four groups, which are centrally symmetrically distributed at the four corners of the base (11).

3. The vibrator master-slave shaft locking structure according to claim 1, characterized in that: The transmission wheel assembly (15) includes a first transmission wheel (151) rotatably connected to the bottom surface of the base (11). The power shaft of the motor (14) passes through the bottom wall of the base (11) and is connected to the first transmission wheel (151) for transmission. The center of the bottom end of the main shaft assembly (16) is also fixed with a second transmission wheel (152). The first transmission wheel (151) and the second transmission wheel (152) are provided with the same transmission belt (153) on their outer periphery.

4. The vibrator master-slave shaft locking structure according to claim 1, characterized in that: The fixing component (2) further includes a movable block (23) movably connected to the outer periphery of the connecting rod (21), and a spring (22) is fixed at both ends of the movable block (23).

5. The vibrator master-slave shaft locking structure according to claim 4, characterized in that: The connecting rod (21), the spring (22), the movable block (23), the elastic pull rod (25), the clamping member (26) and the universal ball (261) located on the same side are arranged as a group, and four groups are arranged symmetrically around the main shaft assembly (16).

6. The vibrator master-slave shaft locking structure according to claim 1, characterized in that: The threaded rod (27) is a double-ended stud. The center piece (24) and the connecting piece (29) are disposed on two opposite threads of the threaded rod (27). The two engaging pieces (28) disposed at both ends of the clamping piece (26) are arranged in a mirror image.

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