Vibration reducing device for vibrating screen of coal preparation plant

Abstract

The utility model relates to the technical field of vibrating screens, in particular to a coal preparation plant vibrating screen damping device which comprises an upper top plate, a stress disc is fixedly connected to the bottom of the upper top plate, a damping air bag is fixedly connected to the bottom of the stress disc, and a buffering mechanism is fixedly connected to the outer side of the damping air bag. A bottom plate is fixedly connected to the bottom of the buffering mechanism, a moving mechanism is fixedly connected to the outer side of the stress disc, the buffering mechanism comprises an L-shaped rod, a connecting disc is fixedly connected to the bottom of the L-shaped rod, a nylon rod is fixedly connected to the bottom of the connecting disc, and a supporting disc is movably connected to the bottom of the nylon rod; a friction hole is formed in the supporting disc, a reset spring is fixedly connected to the bottom of the connecting disc, and the moving mechanism comprises a sliding rod. The damping device is simple in structure and convenient to use, the service life of the damping air bag can be prolonged, and the position of the damping device can be adjusted.

Description

Technical Field

[0001] The utility model relates to a vibration screen damping device for a coal preparation plant, belonging to the technical field of vibration screens. Background Art

[0002] The vibrating screen works by utilizing the reciprocating vibration generated by excitation. The upper rotating weight of the vibrator produces planar gyratory vibration, while the lower rotating weight causes the screen surface to produce conical gyratory vibration. The combined effect causes the screen surface to produce compound gyratory vibration. Its vibration trajectory is a complex spatial curve, which is projected as a circle on the horizontal plane and an ellipse on the vertical plane. By adjusting the upper and lower rotating weights, the shape of the curve can be changed, and by adjusting the space of the upper and lower weights, the curve shape of the screen surface motion trajectory and the motion trajectory of the material on the screen surface can be changed.

[0003] According to the authorized patent CN202120813883.3, this patent has a simple structure, is easy to install, and has low cost. It can play a buffering role when the vibrating screen vibrates, reduce the vibration of the bottom plate, and effectively reduce the noise of the vibrating screen. However, since the shock-absorbing airbag at the bottom of the vibrating screen is always in working condition, its service life is limited, and the shock-absorbing airbag inside the shock-absorbing device needs to be replaced frequently. After the installation is completed, the position of the shock-absorbing device cannot be adjusted according to its specific force point. Utility Model Content

[0004] The purpose of the utility model is to provide a vibration screen shock absorbing device for a coal preparation plant. The utility model has a simple structure and is easy to use. It can extend the service life of the shock absorbing airbag and can adjust the position of the shock absorbing device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A shock absorbing device for a vibrating screen in a coal preparation plant comprises an upper top plate, a force-bearing plate fixedly connected to the bottom of the upper top plate, a shock-absorbing airbag fixedly connected to the bottom of the force-bearing plate, a buffer mechanism fixedly connected to the outside of the shock-absorbing airbag, a bottom plate fixedly connected to the bottom of the buffer mechanism, and a moving mechanism fixedly connected to the outside of the force-bearing plate.

[0007] The buffer mechanism includes an L-shaped rod, the bottom of which is fixedly connected to a connecting plate, the bottom of which is fixedly connected to a nylon rod, the bottom of which is movably connected to a supporting plate, a friction hole is provided inside the supporting plate, and the bottom of the connecting plate is fixedly connected to a reset spring.

[0008] The moving mechanism includes a sliding rod, a moving groove is opened inside the base plate, the outer side of the sliding rod is fixedly connected to a limiting rod, the outer side of the sliding rod is fixedly connected to an extension plate, the outer side of the extension plate is fixedly connected to a threaded tube, the inner thread of the threaded tube is connected to a screw, the outer side of the screw is fixedly connected to a rotating cover, and the end of the screw away from the rotating cover is fixedly connected to a positioning rod.

[0009] Furthermore, the number of the force-bearing disc and the shock-absorbing airbag is the same, and the force-bearing disc and the shock-absorbing airbag are symmetrically distributed between the upper top plate and the bottom plate. Through the coordinated use of the force-bearing disc and the shock-absorbing airbag, the upper top plate can be shock-absorbing.

[0010] Furthermore, the L-shaped rods are symmetrically distributed on the outside of the force-bearing disk, and the connecting disk and the supporting disk are located on the outside of the shock-absorbing airbag. Through the action of the connecting disk and the supporting disk, the shock-absorbing airbag can be buffered when it is subjected to force.

[0011] Furthermore, the bottom of the nylon rod is movably connected to the inside of the friction hole, and the bottom of the reset spring is fixedly connected to the top of the support plate. The potential energy generated by the squeezing of the support plate is eliminated by the continuous friction of the nylon rod in the friction hole.

[0012] Furthermore, the bottom of the sliding rod is slidably connected to the inside of the moving groove, and the limiting rod is slidably connected to the inner wall of the moving groove. By moving the sliding rod inside the moving groove, the position of the force plate and the shock-absorbing airbag can be adjusted.

[0013] Furthermore, the number of the extension plates is the same as that of the sliding rods, and the bottom of the extension plates is located outside the bottom plate. The extension plates are symmetrically distributed outside the bottom plate, so that the extrusion rods inside the extension plates can perform positioning processing on the bottom plate.

[0014] Furthermore, the screw is rotatably connected to the inside of the threaded tube via a rotating cover, and the positioning rod is movably connected to the outside of the extension plate, so that the screw can be driven to rotate and move inside the threaded tube via the rotating cover.

[0015] The beneficial effects of the utility model are:

[0016] (I) The utility model is provided with an upper top plate, and a force-bearing plate and a shock-absorbing airbag are fixedly connected to the bottom of the upper top plate. Through the coordinated use of the force-bearing plate and the shock-absorbing airbag, the vibration screen on the top of the upper top plate can be damped, and an L-shaped rod is fixedly connected to the outer side of the force-bearing plate. When the upper top plate moves downward due to vibration, the force-bearing plate will be driven to move downward. At this time, through the coordinated use of the L-shaped rod and the connecting plate, the connecting plate drives the supporting plate at the bottom of the nylon rod to move to the top of the bottom plate, and a return spring is fixedly connected to the top of the supporting plate. Therefore, the supporting plate can buffer the shock-absorbing airbag at the bottom of the force-bearing plate, and the potential energy generated by the supporting plate will be eliminated through the movement of the nylon rod inside the friction hole, thereby achieving the effect of extending the life of the shock-absorbing airbag.

[0017] (ii) The utility model provides a bottom plate. When the position of the shock-absorbing airbag on the top of the bottom plate needs to be adjusted, the screw is driven to rotate by the rotating cover, so that the screw is rotated and moved inside the threaded tube. At this time, the screw drives the positioning rod away from the bottom plate, and then moves inside the movable groove through the sliding rod. When the sliding rod drives the shock-absorbing airbag to move to a suitable position, the rotating cover is reversed, so that the rotating cover drives the screw to move again inside the threaded tube, and the screw drives the positioning rod to move to the outside of the bottom plate again, so as to position the shock-absorbing airbag, thereby achieving the effect of being able to adjust the position of the shock-absorbing airbag. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.

[0019] Figure 1 This is a structural schematic diagram of a vibration damping device for a coal preparation plant according to the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the outer side of a force plate of a vibration screen damping device in a coal preparation plant according to the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the outer side of a buffer mechanism of a vibration screen damping device of a coal preparation plant according to the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the outer side of the moving mechanism of a vibration screen damping device of a coal preparation plant according to the utility model;

[0023] Numbers in the figure: 1. upper plate; 2. force plate; 3. shock-absorbing airbag; 4. buffer mechanism; 41. L-shaped rod; 42. connecting plate; 43. nylon rod; 44. supporting plate; 45. friction hole; 46. reset spring; 5. bottom plate; 6. moving mechanism; 61. sliding rod; 62. moving groove; 63. limiting rod; 64. extension plate; 65. threaded tube; 66. screw; 67. rotating cover; 68. positioning rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1 Please refer to Figure 1-Figure 4 , the utility model provides a technical solution:

[0026] A shock absorbing device for a vibrating screen in a coal preparation plant comprises an upper top plate 1, a force-bearing plate 2 is fixedly connected to the bottom of the upper top plate 1, a shock-absorbing airbag 3 is fixedly connected to the bottom of the force-bearing plate 2, a buffer mechanism 4 is fixedly connected to the outer side of the shock-absorbing airbag 3, a bottom of the buffer mechanism 4 is fixedly connected to a bottom plate 5, a moving mechanism 6 is fixedly connected to the outer side of the force-bearing plate 2, the buffer mechanism 4 comprises an L-shaped rod 41, a connecting plate 42 is fixedly connected to the bottom of the L-shaped rod 41, a nylon rod 43 is fixedly connected to the bottom of the connecting plate 42, a supporting plate 44 is movably connected to the bottom of the nylon rod 43, a friction hole 45 is provided inside the supporting plate 44, and a reset spring 46 is fixedly connected to the bottom of the connecting plate 42.

[0027] Specifically, Figure 1 As shown, the number of force-bearing disks 2 and shock-absorbing airbags 3 is the same, and the force-bearing disks 2 and shock-absorbing airbags 3 are symmetrically distributed between the upper top plate 1 and the bottom plate 5, the L-shaped rods 41 are symmetrically distributed on the outside of the force-bearing disks 2, the connecting disks 42 and the supporting disks 44 are located on the outside of the shock-absorbing airbags 3, the bottom of the nylon rod 43 is movably clamped in the friction hole 45, and the bottom of the reset spring 46 is fixedly connected to the top of the supporting disk 44.

[0028] In this embodiment: an upper top plate 1 is provided, and a force-bearing plate 2 and a shock-absorbing airbag 3 are fixedly connected to the bottom of the upper top plate 1. Through the coordinated use of the force-bearing plate 2 and the shock-absorbing airbag 3, the vibrating screen on the top of the upper top plate 1 can be damped, and an L-shaped rod 41 is fixedly connected to the outer side of the force-bearing plate 2. When the upper top plate 1 moves downward due to vibration, it will drive the force-bearing plate 2 to move downward. At this time, through the coordinated use of the L-shaped rod 41 and the connecting plate 42, the connecting plate 42 drives the supporting plate 44 at the bottom of the nylon rod 43 to move to the top of the bottom plate 5, and a return spring 46 is fixedly connected to the top of the supporting plate 44. Therefore, the supporting plate 44 can buffer the shock-absorbing airbag 3 at the bottom of the force-bearing plate 2, and the potential energy generated by the supporting plate 44 will be eliminated through the movement of the nylon rod 43 inside the friction hole 45, thereby achieving the effect of extending the life of the shock-absorbing airbag 3.

[0029] Example 2 Please refer to Figure 1 , Figure 2 and Figure 4 The difference between this embodiment and embodiment 1 is that: the moving mechanism 6 includes a sliding rod 61, a moving groove 62 is opened inside the bottom plate 5, the outer side of the sliding rod 61 is fixedly connected to a limiting rod 63, the outer side of the sliding rod 61 is fixedly connected to an extension plate 64, the outer side of the extension plate 64 is fixedly connected to a threaded tube 65, the inner side of the threaded tube 65 is threadedly connected to a screw 66, the outer side of the screw 66 is fixedly connected to a rotating cover 67, and the end of the screw 66 away from the rotating cover 67 is fixedly connected to a positioning rod 68.

[0030] Specifically, Figure 1-4 As shown, the bottom of the sliding rod 61 is slidably connected to the inside of the moving groove 62, the limiting rod 63 is slidably connected to the inner wall of the moving groove 62, the number of extension plates 64 is the same as that of the sliding rod 61, and the bottom of the extension plate 64 is located on the outside of the bottom plate 5, the screw 66 is rotatably connected to the inside of the threaded tube 65 through the rotating cover 67, and the positioning rod 68 is movably connected to the outside of the extension plate 64.

[0031] In the present embodiment: by setting up the base plate 5, when it is necessary to adjust the position of the shock-absorbing airbag 3 on the top of the base plate 5, the screw 66 is driven to rotate by the rotating cover 67, so that the screw 66 is rotated and moved inside the threaded tube 65. At this time, the screw 66 will drive the positioning rod 68 away from the base plate 5, and then through the sliding rod 61 inside the movable groove 62, when the sliding rod 61 drives the shock-absorbing airbag 3 to move to the appropriate position, by reversing the rotating cover 67, the rotating cover 67 drives the screw 66 to move again inside the threaded tube 65, so that the screw 66 drives the positioning rod 68 to move to the outside of the base plate 5 again, and the shock-absorbing airbag 3 is positioned, thereby achieving the effect of being able to adjust the position of the shock-absorbing airbag 3.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vibration damping device for a coal preparation plant vibrating screen, comprising an upper top plate (1), characterized in that: The bottom of the upper top plate (1) is fixedly connected to a force-bearing plate (2), the bottom of the force-bearing plate (2) is fixedly connected to a shock-absorbing airbag (3), the outer side of the shock-absorbing airbag (3) is fixedly connected to a buffer mechanism (4), the bottom of the buffer mechanism (4) is fixedly connected to a bottom plate (5), and the outer side of the force-bearing plate (2) is fixedly connected to a moving mechanism (6). The buffer mechanism (4) comprises an L-shaped rod (41), the bottom of the L-shaped rod (41) is fixedly connected to a connecting plate (42), the bottom of the connecting plate (42) is fixedly connected to a nylon rod (43), the bottom of the nylon rod (43) is movably connected to a supporting plate (44), a friction hole (45) is provided inside the supporting plate (44), and the bottom of the connecting plate (42) is fixedly connected to a return spring (46). The moving mechanism (6) comprises a sliding rod (61), a moving groove (62) is provided inside the bottom plate (5), a limiting rod (63) is fixedly connected to the outer side of the sliding rod (61), an extension plate (64) is fixedly connected to the outer side of the sliding rod (61), a threaded tube (65) is fixedly connected to the outer side of the extension plate (64), a screw (66) is threadedly connected to the inner side of the threaded tube (65), a rotating cover (67) is fixedly connected to the outer side of the screw (66), and a positioning rod (68) is fixedly connected to the end of the screw (66) away from the rotating cover (67).

2. A vibration damping device for a coal preparation plant according to claim 1, characterized in that: The number of the force-bearing discs (2) and the shock-absorbing airbags (3) is the same, and the force-bearing discs (2) and the shock-absorbing airbags (3) are symmetrically distributed between the upper top plate (1) and the bottom plate (5).

3. A vibration damping device for a coal preparation plant according to claim 1, characterized in that: The L-shaped rods (41) are symmetrically distributed on the outside of the force-bearing disk (2), and the connecting disk (42) and the supporting disk (44) are located on the outside of the shock-absorbing airbag (3).

4. A vibration damping device for a coal preparation plant according to claim 1, characterized in that: The bottom of the nylon rod (43) is movably clamped in the friction hole (45), and the bottom of the return spring (46) is fixedly connected to the top of the support plate (44).

5. A vibration damping device for a coal preparation plant according to claim 1, characterized in that: The bottom of the sliding rod (61) is slidably connected to the inside of the moving groove (62), and the limiting rod (63) is slidably connected to the inner wall of the moving groove (62).

6. A vibration damping device for a coal preparation plant according to claim 1, characterized in that: The number of the extension plates (64) is the same as the number of the sliding rods (61), and the bottom of the extension plates (64) is located outside the bottom plate (5).

7. A vibration damping device for a coal preparation plant according to claim 1, characterized in that: The screw rod (66) is rotatably connected to the inside of the threaded tube (65) via a rotating cover (67), and the positioning rod (68) is movably connected to the outside of the extension plate (64).

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