A vibration damping device for a mining machine

Abstract

This utility model discloses a vibration damping device for a ore feeder, including a base, with multiple sleeves fixedly connected to the top of the base; multiple second vibration damping components are fitted inside the multiple sleeves; a bearing plate is fixedly connected to the top of the multiple second vibration damping components; the ore feeder body is disposed on the top of the bearing plate; a first vibration damping component is disposed between the bearing plate and the ore feeder body; a variable frequency vibration motor is disposed at the middle position of the bottom of the ore feeder body. This device further enhances the vibration damping effect, reduces the transmission of vibration to the surrounding foundation structure, reduces the possibility of ground subsidence, and ensures the stability of the entire production system.

Description

Technical Field

[0001] This utility model relates to the field of ore feeder equipment technology, and in particular to a shock absorption device for ore feeders. Background Technology

[0002] Mining feeders are widely used in mining, metallurgy, and coal industries. Their main function is to uniformly and stably transport materials such as ore to subsequent processing equipment. During the operation of the feeding feeder, significant vibrations are generated due to the impact of falling materials and the operation of the equipment itself. Existing vibration damping devices for ore feeders have several shortcomings. Some devices rely solely on a single spring or rubber pad for shock absorption, which proves ineffective against large impacts and can easily lead to spring breakage, shortening the feeder's lifespan and increasing maintenance costs. Furthermore, some damping devices lack adaptability, making it difficult to adjust to different working environments and feed rates, thus failing to meet diverse production needs. Simultaneously, the vibrations generated by the feeder can be transmitted to the surrounding foundation structure, causing ground subsidence and affecting the stability of the entire production system. Utility Model Content

[0003] The present invention aims to solve the problems mentioned in the background art by providing a vibration damping device for mining machines.

[0004] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a vibration damping device for a ore feeder, comprising a base, with multiple sleeves fixedly connected to the top of the base; multiple second vibration damping components are fitted inside the multiple sleeves; a bearing plate is fixedly connected to the top of the multiple second vibration damping components; an ore feeder body is disposed on the top of the bearing plate; a first vibration damping component is disposed between the bearing plate and the ore feeder body; and a variable frequency vibration motor is disposed at the middle position of the bottom of the ore feeder body.

[0005] Furthermore, the first damping component includes a spring A, multiple columns a fixedly connected to the top of the bearing plate, and multiple columns b fixedly connected to the bottom of the feeder body; each of the multiple columns a and columns b has two sliding grooves at one end; there are two sets of spring A, one end of which is fixedly connected to a top plate, and the other end of which is fixedly connected to a bottom plate; the edges of the top plate and the bottom plate are respectively snap-fitted to the sliding grooves of the columns a and the sliding grooves of the columns b.

[0006] Furthermore, the second damping assembly includes a piston rod and a spring B; the bottom of the spring B is connected to the bottom of the sleeve; the top of the spring B is connected to the bottom of the piston rod; the top of the piston rod is fixedly connected to the bottom of the bearing plate; and a damping oil layer is provided at the contact portion between the piston rod and the inner wall of the sleeve.

[0007] Furthermore, the sliding groove fastening points of the top plate and column a, as well as the sliding groove fastening points of the bottom plate and column b, are all secured by two bolts that pass through column a and the top plate in sequence and are fixed by nuts threaded through them.

[0008] Furthermore, the sleeves are arranged in three groups at the four corners of the top of the base, in a triangular pattern.

[0009] Furthermore, the base has multiple rubber pads at its bottom.

[0010] Compared with the prior art, this utility model has the following advantages: This invention, through the synergistic action of the first and second damping components, effectively absorbs and buffers the vibrations generated during the operation of the ore feeder, significantly improving the damping effect. The multiple springs disperse the impact force, reducing the likelihood of spring breakage, lowering maintenance costs, and extending the service life of the ore feeder. The inclusion of springs A and B allows for the selection of springs with different elastic coefficients based on actual working conditions, providing good adaptability and meeting the damping requirements of different feed rates and working environments. This device further enhances the damping effect, reduces the transmission of vibration to the surrounding foundation structure, lowers the possibility of ground subsidence, and ensures the stability of the entire production system. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from below; Figure 3 This is a frontal plan view of the present invention; Figure 4 This is a schematic diagram of the exploded structure of this utility model; Figure 5 This is a schematic diagram of the structure of this utility model from an exploded, bottom-view perspective.

[0012] Legend: 1-Base, 2-Sleeve, 3-Bearing plate, 4-Feeder body, 5-First damping component, 501-Top plate, 502-Spring A, 503-Bottom plate, 6-Second damping component, 601-Piston rod, 602-Spring B, 7-Column a, 8-Column b, 9-Bolt rod, 10-Nut, 11-Rubber pad, 12-Variable frequency vibration motor, 13-Slide groove. Detailed Implementation

[0013] 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: A shock-absorbing device for a ore feeder includes a base 1, a plurality of sleeves 2 fixedly connected to the top of the base 1; a plurality of second shock-absorbing components 6 are fitted inside the plurality of sleeves 2; a bearing plate 3 is fixedly connected to the top of the plurality of second shock-absorbing components 6; an ore feeder body 4 is provided on the top of the bearing plate 3; a first shock-absorbing component 5 is provided between the bearing plate 3 and the ore feeder body 4; a variable frequency vibration motor 12 is provided at the middle position of the bottom of the ore feeder body 4.

[0014] Specifically, the first damping component 5 includes a spring A502, multiple columns a7 fixedly connected to the top of the bearing plate 3, and multiple columns b8 fixedly connected to the bottom of the feeder body 4; each of the columns a7 and b8 has two corresponding grooves 13 at one end; there are two sets of springs A502, one end of which is fixedly connected to a top plate 501, and the other end of which is fixedly connected to a bottom plate 503; the edges of the top plate 501 and the bottom plate 503 are respectively snapped into the grooves 13 of the columns a7 and b8. When the feeder body 4 vibrates during operation, the springs A502 undergo elastic deformation, absorbing part of the vibration energy. Multiple springs A502 share the impact force, reducing the load on individual springs and ensuring the bearing plate 3 shakes smoothly.

[0015] Specifically, the second damping component 6 includes a piston rod 601 and a spring B602; the bottom of the spring B602 is connected to the bottom of the sleeve 2; the top of the spring B602 is connected to the bottom of the piston rod 601; the top of the piston rod 601 is fixedly connected to the bottom of the support plate 3; and a damping oil layer is provided at the contact portion between the piston rod 601 and the inner wall of the sleeve 2. When the support plate 3 is vibrated, the piston rod 601 slides up and down inside the sleeve 2, the spring B602 further buffers the vibration, and at the same time, the damping oil layer on the inner wall of the sleeve 2 makes the damping process more stable. The dual damping effectively reduces vibration transmission.

[0016] Specifically, the sliding groove 13 of the top plate 501 and the column a7, as well as the sliding groove 13 of the bottom plate 503 and the column b8, are all secured by two bolt rods 9 that pass through the column a7 and the top plate 501 in sequence and are threaded by nuts 10.

[0017] Specifically, the sleeve 2 is set in three sets at the four corners of the top of the base 1, arranged in a triangle, which can increase the overall stability of the device.

[0018] Specifically, the base 1 has multiple rubber pads 11 at its bottom, which can prevent the device from shifting and buffer vibrations, reducing the risk of ground subsidence.

[0019] During construction, when the feeder body 4 is working, the resulting vibrations are initially buffered by the first damping component 5. Multiple springs A502 work together to absorb some of the vibration energy, reducing the load on individual springs and lowering the probability of breakage. Next, the remaining vibrations are transmitted to the bearing plate 3, where spring B602 begins to work. The hydraulic buffer structure, composed of spring B602, sleeve 61, and piston rod 62, further absorbs the vibration energy, and the damping oil layer makes the damping process smoother. The rubber pad 11 reduces the transmission of vibrations to the ground, lowering the risk of ground subsidence, thereby effectively protecting the feeder body 4, extending its service life, and ensuring the stability of the production system.

[0020] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A device for cushioning a mining machine, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a plurality of sleeves (2); a plurality of second shock-absorbing components (6) are fitted inside the plurality of sleeves (2); a bearing plate (3) is fixedly connected to the top of the plurality of second shock-absorbing components (6); a feeder body (4) is provided on the top of the bearing plate (3); a first shock-absorbing component (5) is provided between the bearing plate (3) and the feeder body (4); a variable frequency vibration motor (12) is provided at the middle position of the bottom of the feeder body (4).

2. A shock absorbing device for a mining machine as set forth in claim 1, wherein: The first shock-absorbing component (5) includes a spring A (502), multiple columns a (7) fixedly connected to the top of the bearing plate (3), and multiple columns b (8) fixedly connected to the bottom of the feeder body (4); each of the multiple columns a (7) and columns b (8) has two grooves (13) at one end; there are two sets of spring A (502), one end of which is fixedly connected to a top plate (501), and the other end of which is fixedly connected to a bottom plate (503); the edges of the top plate (501) and the bottom plate (503) are respectively snapped into the grooves (13) of the columns a (7) and the grooves (13) of the columns b (8).

3. A shock absorbing device for a mining machine as set forth in claim 1, wherein: The second damping component (6) includes a piston rod (601) and a spring B (602); the bottom of the spring B (602) is connected to the bottom of the sleeve (2); the top of the spring B (602) is connected to the bottom of the piston rod (601); the top of the piston rod (601) is fixedly connected to the bottom of the bearing plate (3); the contact portion between the piston rod (601) and the inner wall of the sleeve (2) is provided with a damping oil layer.

4. A shock absorbing device for a mining machine as set forth in claim 2, wherein: The groove (13) of the top plate (501) and column a (7) and the groove (13) of the bottom plate (503) and column b (8) are all secured by two bolt rods (9) that pass through column a (7) and top plate (501) in sequence and are fixed by nuts (10) thread.

5. A shock absorbing device for a mining machine as set forth in claim 1, wherein: The sleeve (2) is set in three groups at the four corners of the top of the base (1), arranged in a triangular shape.

6. A shock absorbing device for a mining machine as set forth in claim 1, wherein: The base (1) has multiple rubber pads (11) at its bottom.

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