CN109250387B

CN109250387B - Anti-blocking bucket elevator

Info

Publication number: CN109250387B
Application number: CN201811019124.9A
Authority: CN
Inventors: 杨海俊; 杨华
Original assignee: WUHU HUAJIE ENVIRONMENTAL PROTECTION EQUIPMENT CO LTD
Current assignee: WUHU HUAJIE ENVIRONMENTAL PROTECTION EQUIPMENT CO LTD
Priority date: 2018-09-03
Filing date: 2018-09-03
Publication date: 2020-05-05
Anticipated expiration: 2038-09-03
Also published as: CN109250387A

Abstract

The invention provides an anti-blocking bucket elevator which comprises a lower shell, wherein a conveying plate is fixed on a lifting conveying belt, a shovel hopper assembly is arranged on the upper surface of the conveying plate and comprises a fixed shovel hopper, the fixed shovel hopper is arranged on the conveying plate, the fixed shovel hopper is connected with a movable shovel hopper through a movable assembly, and a scraping plate is fixed at the top end of the movable shovel plate; a vibration bottom plate is arranged in the cavity of the lower shell, a vibration device capable of vibrating the vibration bottom plate is arranged at the bottom end of the vibration bottom plate, and the vibration bottom plate is fixed in the lower shell through vibration absorption components arranged on two sides; vibrating device can break away from the vibration bottom plate with the adhesion at the material vibration of vibration bottom plate, and the shovel hopper subassembly can break away from the vibration on the vibration bottom plate and carry out the operation of shoveling with accumulational material, and the efficient has reduced the material and has taken place to pile up in the lifting machine bottom, prevents that the lifting machine from taking place blocking phenomenon, has guaranteed the normal operating of shovel hopper subassembly, improves production efficiency.

Description

Anti-blocking bucket elevator

Technical Field

The invention relates to the field of production of environment-friendly equipment, in particular to an anti-blocking bucket elevator.

Background

The lifting conveyor is a conveyor for continuously conveying granular materials vertically upwards, and is suitable for conveying crushed and screened granular garbage.

The invention discloses a traditional Chinese patent application No. 201310493346.5, which is named as a bucket elevator, wherein a chain bucket cleaning device is arranged in a case, the chain cleaning device is arranged on one side of an annular chain, which moves from top to bottom, after the structure is adopted, materials remained in a chain bucket are firstly heated by the chain bucket cleaning device arranged on the side, which moves downwards, in the chain bucket movement period, so that the adhesion of the materials is reduced, and then the chain bucket is vibrated, so that the materials are smoothly shaken in the case.

This device is behind the material of clearance chain bucket, with the material shake off chassis bottom, and chassis bottom is scattered easily to the material that the discharge gate was seen off simultaneously, when the accumulational material of hoist machine bottom was too much, takes place the adhesion in the lifting machine bottom easily, and the chain bucket takes place blocking phenomenon easily when moving the hoist machine bottom.

Disclosure of Invention

The invention aims to provide an anti-blocking bucket elevator, which aims to solve the problems that materials are accumulated and adhered at the bottom of the elevator in the prior art and prevent a hopper from blocking the bottom of the elevator due to overlarge resistance of the accumulated materials when the hopper runs to the bottom of the elevator.

In order to solve the technical problems, the invention provides an anti-blocking bucket elevator which comprises an elevator head, an elevator box shell and a lower casing, wherein the elevator head is provided with a driven wheel and a discharge port, a driving wheel is arranged in the lower casing, the driving wheel is connected with the driven wheel through a lifting conveyer belt, a conveying plate is fixed on the outer surface of the lifting conveyer belt, a bucket assembly is arranged on the upper surface of the conveying plate, the bucket assembly comprises a fixed bucket, the fixed bucket is arranged on the conveying plate, the fixed bucket is connected with a movable bucket through a movable assembly, and a scraper is fixed at the top end of the movable bucket; a vibration bottom plate is arranged in a cavity of the lower shell, a vibration device capable of vibrating the vibration bottom plate is arranged at the bottom end of the vibration bottom plate, the vibration bottom plate is fixed in the lower shell through vibration reduction assemblies arranged at two sides, the bucket assembly conveys granular materials to the discharge port through a lifting conveying belt, the vibration bottom plate in the lower shell vibrates scattered granular materials, and the granular materials are shoveled and conveyed to the discharge port through the bucket assembly;

the movable assemblies are symmetrically arranged on two sides of the fixed shovel hopper and comprise rotating sleeves, the rotating sleeves are fixed at the bottom ends of the sector plates, rotating shafts are sleeved in the rotating sleeves and fixed in the sector cavities, sector grooves are formed in the sector cavities, tension springs are installed in the sector grooves, one ends of the tension springs are fixed on one sides of the upper ends of the sector plates, the other ends of the tension springs are fixed at the end portions of the sector grooves, limit blocks are arranged on the side surfaces of the sector cavities, limit grooves matched with the limit blocks are formed in the side surfaces of the sector plates, and the limit grooves are formed in the other side surfaces of the sector plates;

the vibrating device comprises a motor installation box, the motor installation box is arranged on the side face of the lower shell, a vibrating motor is installed in the motor installation box, the output end of the vibrating motor penetrates through the side face of the lower shell and is fixedly connected with an eccentric wheel, an eccentric shaft is arranged on the eccentric wheel, and a plurality of rapping assemblies are fixed on the eccentric shaft.

Preferably, a machine head is fixed to the upper end of the machine case shell, a lower machine shell is fixed to the bottom end of the machine case shell, a feed inlet is formed in the side face of the bottom end of the machine case shell, a conveying motor is fixed to the side face of the lower machine shell, and the output end of the conveying motor is connected with the driving wheel through a belt.

Preferably, the two sides of the fixed shovel hopper are fan-shaped, the two sides of the movable shovel hopper are provided with fan-shaped plates, the two sides of the fixed shovel hopper are provided with fan-shaped cavities, and the movable shovel hopper is inserted into the two sides of the fixed shovel hopper through the fan-shaped plates.

Preferably, it is a plurality of the subassembly of rapping includes the vibration seat, be equipped with the vibration extension spring in the vibration seat, vibration extension spring one end is fixed in the vibration seat, the other end is connected with the vibrating arm, the vibrating arm is pegged graft in the vibration seat.

Preferably, the vibration bottom plate is circular arc concave surface form, damper includes vibration damping mount, vibration damping mount fixes the inside bottom of casing down, vibration damping mount internal fixation has damping spring, damping spring's upper end is connected with the bracing piece, the upper end of bracing piece is fixed with the backup pad, the backup pad with vibration bottom plate fixed connection, the backup pad is the arc form.

Compared with the prior art, the invention has the beneficial effects that: the material shoveling device comprises a shoveling hopper component arranged on the lifting conveying belt, a fixed shoveling hopper is fixed on a conveying plate of the lifting conveying belt, a movable shoveling hopper is movably inserted into the fixed shoveling hopper through a movable component, the material adhered to the vibrating bottom plate is vibrated to be separated from the vibrating bottom plate through a vibrating device after the lifting conveying belt is conveyed to the side face of the bottom end of the downward movement of the shoveling hopper component, a scraper on the shoveling hopper component scrapes the material on the vibrating bottom plate into an inner cavity of the fixed shoveling hopper, the shoveled material can be pushed out of the fixed shoveling hopper through self gravity along with the operation of the shoveling hopper component driven by the lifting conveying belt, and the movable shoveling hopper stretches to the maximum state after the lifting conveying belt is conveyed to the side face of the bottom end of the upward movement of the; vibrating device can break away from the vibration bottom plate with the adhesion at the material vibration of vibration bottom plate, and shovel hopper subassembly can break away from the vibration on the vibration bottom plate and carry out the operation of shoveling with accumulational material, and the efficient has reduced because of the material takes place to pile up the adhesion phenomenon in the lifting machine bottom, prevents that the lifting machine from taking place the jam problem when the operation, has guaranteed the normal operating of shovel hopper subassembly, improves production efficiency.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic structural view of a bucket assembly of the present invention;

FIG. 4 is a side cross-sectional view of the dipper assembly of the present invention;

FIG. 5 is a schematic view of the rapping assembly of the present invention;

FIG. 6 is a schematic view of the shock absorbing assembly of the present invention.

Description of reference numerals: 1-head, 2-housing, 3-feed inlet, 4-lower housing, 5-vibrating device, 51-motor mounting box, 52-vibrating motor, 53-eccentric wheel, 54-eccentric shaft, 55-rapping assembly, 55 a-vibrating seat, 55 b-vibrating tension spring, 55 c-vibrating rod, 6-conveying motor, 7-discharge outlet, 8-driven wheel, 9-shovel hopper assembly, 91-fixed shovel hopper, 92-movable shovel hopper, 92 a-sector plate, 93-scraper, 94-sector cavity, 95-rotating sleeve, 96-rotating shaft, 97-tension spring, 98-limiting block, 99-limiting groove, 10-lifting conveyer belt, 11-driving wheel, 12-vibrating bottom plate, 13-a belt, 14-a conveying plate, 15-a material guide plate, 16-a damping component, 16 a-a damping base, 16 b-a damping spring, 16 c-a supporting rod and 16 d-a supporting plate.

Detailed Description

Reference will now be made in detail to various exemplary embodiments of the invention, the detailed description should not be construed as limiting the invention but as a more detailed description of certain aspects, features and embodiments of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The specification and examples are exemplary only.

Referring to fig. 1-6, the anti-clogging bucket elevator of the present invention includes a machine head 1, a machine case shell 2, and a lower machine shell 4, wherein the machine head 1 is provided with a driven wheel 8 and a discharge port 7, a driving wheel 11 is arranged in the lower machine shell 4, the driving wheel 11 is connected with the driven wheel 8 through a lifting conveyor belt 10, a conveying plate 14 is fixed on the outer surface of the lifting conveyor belt 10, a material shoveling bucket assembly 9 is arranged on the upper surface of the conveying plate 14, the material shoveling bucket assembly 9 includes a fixed material shoveling bucket 91, the fixed material shoveling bucket 91 is arranged on the conveying plate 14, the fixed material shoveling bucket 91 is connected with a movable material shoveling bucket 92 through a movable assembly, and a scraping plate 93 is fixed at the top end; a vibration bottom plate 12 is arranged in a cavity of the lower shell 4, a vibration device 5 capable of vibrating the vibration bottom plate 12 is arranged at the bottom end of the vibration bottom plate 12, the vibration bottom plate 12 is fixed in the lower shell 4 through vibration absorption components 16 arranged at two sides, the shoveling hopper component 9 conveys the granular materials to the discharge port 7 through a lifting conveying belt 10, the vibration bottom plate 12 in the lower shell 4 vibrates the scattered granular materials, and the scattered granular materials are shoveled and conveyed to the discharge port 7 through the shoveling hopper component 9;

referring to fig. 3 and 4, the movable assemblies are symmetrically arranged on two sides of the fixed shovel hopper 91, each movable assembly includes a rotating sleeve 95, the rotating sleeve 95 is fixed at the bottom end of the sector plate 92a, a rotating shaft 96 is sleeved in the rotating sleeve 95, the rotating shaft 96 is fixed in the sector cavity 94, a sector groove is formed in the sector cavity 94, a tension spring 97 is installed in the sector groove, one end of the tension spring 97 is fixed at one side of the upper end of the sector plate 92a, the other end of the tension spring is fixed at the end of the sector groove, a limit block 98 is arranged on the side surface of the sector cavity 94, a limit groove 99 matched with the limit block 98 is formed in the side surface of the sector plate 92a, the rotating sleeve 95 fixed at the end of the sector plate 92a is rotationally matched with the rotating shaft 96 fixed in the sector cavity 94, the movable shovel hopper 92 and the fixed shovel hopper 91 can be movably matched in an inserted manner, after the fixed shovel hopper 91 receives materials from the feeding hole 3, the materials push the sector plates 92a on two sides of the movable shovel hopper 92 out of the sector cavities 94 on two sides of the fixed shovel hopper 91 through the weight of the fixed shovel hopper, the tension spring 97 arranged in the sector grooves generates tension deformation when the movable shovel hopper 92 slides, when the sector plates 92a are unfolded to the maximum, the movable shovel hopper 92 is fixedly limited through the matching of the limiting blocks 98 and the limiting grooves 99, and after the fixed shovel hopper 91 discharges the loaded materials from the discharging hole 7, the movable shovel hopper 92 contracts into the fixed shovel hopper 91 under the restoring force of the tension spring 97;

referring to fig. 2 and 5, the vibration device 5 includes a motor installation box 51, the motor installation box 51 is disposed on the side surface of the lower housing 4, a vibration motor 52 is installed in the motor installation box 51, an output end of the vibration motor 52 penetrates through the side surface of the lower housing 4 and is fixedly connected with an eccentric wheel 53, an eccentric shaft 54 is disposed on the eccentric wheel 53, and a plurality of rapping assemblies 55 are fixed on the eccentric shaft 54;

in this embodiment, referring to fig. 1 and 2, a machine head 1 is fixed at the upper end of a machine case 2, a lower machine case 4 is fixed at the bottom end of the machine case 2, a feed inlet 3 is formed in the side surface of the bottom end of the machine case 2, a conveying motor 6 is fixed on the side surface of the lower machine case 4, and the output end of the conveying motor 6 is connected with a driving wheel 11 through a belt 13; after the fixed shovel hopper 91 loads materials from the feeding hole 3, the materials can separate the movable shovel hopper 92 from the fixed shovel hopper 91 to the maximum state through self gravity, after the materials are transported to the discharging hole 7 and discharged through the guide plate 15, the movable shovel hopper 92 automatically contracts through the movable assembly, after the materials are transported to the bottom end side face of the downward movement of the shovel hopper assembly 9 along with the lifting conveying belt 10, the materials adhered on the vibrating bottom plate 12 vibrate and separate from the vibrating bottom plate 12 through the vibrating device 5, the materials on the vibrating bottom plate 12 are scraped into the inner cavity of the fixed shovel hopper 91 by the scraping plate 93 on the shovel hopper assembly 9, along with the operation of the shovel hopper assembly 9 driven by the lifting conveying belt 10, the shoveled materials can push the movable shovel hopper 92 out of the fixed shovel hopper 91 through self gravity, after the lifting conveying belt 10 transports the bottom end side face of the upward movement of the shovel hopper assembly, the movable shovel hopper 9 extends and retracts to the maximum state; the material is taken from the inlet 3 as the lifting conveyor 10 continues to rise.

In this embodiment, referring to fig. 3, two sides of the fixed shovel hopper 91 are fan-shaped, two sides of the movable shovel hopper 92 are provided with fan-shaped plates 92a, two sides of the fixed shovel hopper 91 are provided with fan-shaped cavities 94, and the movable shovel hopper 92 is inserted into two sides of the fixed shovel hopper 91 through the fan-shaped plates 92 a.

It is a plurality of rapping assembly 55 is including shaking seat 55a, be equipped with vibration extension spring 55b in the vibration seat 55a, vibration extension spring 55b one end is fixed in the vibration seat 55a, the other end is connected with vibrating arm 55c, vibrating arm 55c is pegged graft in the vibration seat 55a, start vibrating motor 52, and vibrating motor 52 drives eccentric wheel 53 and rotates, and eccentric wheel 53 drives eccentric shaft 54 and rotates, installs the rotation of vibration seat 55a on eccentric shaft 54, sets up vibration extension spring 55b in the vibration seat 55a will throw away vibrating arm 55c under the effect of centrifugal force, and the vibrating arm 55c of throwing away will shake the operation to the bottom of vibration bottom plate 12, prevents that vibration bottom plate 12 from taking place the adhesion because of the long-time piling up of material, and the jam phenomenon takes place for the lifting machine.

In this embodiment, referring to fig. 2 and 6, the vibration base plate 12 is an arc concave surface, the damping assembly 16 includes a damping base 16a, the damping base 16a is fixed at the bottom end of the inside of the lower housing 4, a damping spring 16b is fixed in the damping base 16a, a support rod 16c is connected to the upper end of the damping spring 16b, a support plate 16d is fixed at the upper end of the support rod 16c, the support plate 16d is fixedly connected to the vibration base plate 12, the support plate 16d is arc-shaped, and the damping assembly 16 is arranged to prevent long-time vibration of the vibration device 5 from affecting the lower housing, so as to reduce noise of the elevator.

The working principle of the invention is that the worker starts the conveying motor 6 to drive the driving wheel 11 and the driven wheel 8 to rotate and drive the lifting conveying belt 10 to rotate, thereby lifting the shovel hopper assembly 9 on the lifting conveying belt 10, the materials enter from the feeding hole 3 and fall into the fixed shovel hopper 91, the movable shovel hopper 92 can be unfolded due to the accumulation of the materials along with the accumulation of the materials in the fixed shovel hopper 91, the loading capacity of the shovel hopper assembly 9 is improved, when the materials in the shovel hopper assembly 9 are fed into the top end, the materials can turn over after rotating the driven wheel 8, and then fall on the material guide plate 15 and fall from the material outlet 7, thereby achieving the purpose of lifting, when materials enter or turn over, the materials fall onto the vibration bottom plate 12 in the lower shell 4 of the elevator, and if the materials fall for a long time, accumulation or adhesion phenomena occur on the vibration bottom plate 12;

when the material is unloaded from the shovel hopper assembly 9, the movable shovel hopper 92 will contract to the original position under the restoring force of the tension spring 97, after the lifting conveyer belt 10 is transported to the bottom end side of the downward motion of the shovel hopper assembly 9, the material adhered on the vibration bottom plate 12 will drive the eccentric cam 53 to rotate through the vibration motor 52, the vibration tension spring 55b in the vibration seat 55a installed on the eccentric shaft 54 will throw out the vibration rod 55c under the effect of centrifugal force, the vibration rod 55c will perform vibration operation on the vibration bottom plate 12, the accumulated or adhered material will be separated from the vibration bottom plate 12, the scraper 93 on the shovel hopper assembly 9 will scrape the material on the vibration bottom plate 12 into the inner cavity of the fixed shovel hopper 91, and with the operation of the shovel hopper assembly 9 driven by the lifting conveyer belt 10, the shoveled material can push the movable shovel hopper 92 out from the fixed shovel hopper 91 through its own gravity, when the lifting conveyer belt 10 is transported to the bottom end side of the upward motion of the shovel hopper assembly, the movable shovel hopper 92 is extended and retracted to the maximum state; the material is taken from the inlet 3 as the lifting conveyor 10 continues to rise.

In conclusion, the invention has the beneficial effects that the shovel hopper assembly arranged on the lifting conveyer belt is characterized in that the fixed shovel hopper is fixed on the conveying plate of the lifting conveyer belt, the movable shovel hopper is movably inserted into the fixed shovel hopper through the movable assembly, after the lifting conveyer belt is conveyed to the side face of the bottom end of the downward movement of the shovel hopper assembly, the material adhered on the vibrating bottom plate is vibrated by the vibrating device to be separated from the vibrating bottom plate, the material on the vibrating bottom plate is scraped into the inner cavity of the fixed shovel hopper by the scraping plate on the shovel hopper assembly, and the shoveled material can be pushed out from the fixed shovel hopper through self gravity along with the operation of the shovel hopper assembly driven by the lifting conveyer belt, and when the lifting conveyer belt is conveyed to the side face of the bottom end of the upward movement of the shovel hopper assembly, the movable shovel hopper stretches to the maximum state; the vibrating device can vibrate the materials adhered to the vibrating bottom plate to be separated from the vibrating bottom plate, and the shoveling hopper assembly can shovel the materials which are vibrated to be separated from and accumulated on the vibrating bottom plate; the damping assembly who sets up prevents that long-time vibration of vibrating device from influencing the lower casing, reduces the noise of lifting machine, and the efficient has reduced because of the material takes place to pile up the adhesion phenomenon in the lifting machine bottom, prevents that the lifting machine from taking place the jam problem when the operation, has guaranteed the normal operating of shovel hopper subassembly, improves production efficiency.

The foregoing is merely an illustrative embodiment of the present invention, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principle of the present invention should fall within the protection scope of the present invention.

Claims

1. An anti-blocking bucket elevator comprises an aircraft nose (1), an aircraft box shell (2) and a lower enclosure (4), wherein the aircraft nose (1) is provided with a driven wheel (8) and a discharge port (7), a driving wheel (11) is arranged in the lower enclosure (4), the driving wheel (11) is connected with the driven wheel (8) through a lifting conveying belt (10), and the anti-blocking bucket elevator is characterized in that a conveying plate (14) is fixed on the outer surface of the lifting conveying belt (10), a shoveling bucket assembly (9) is arranged on the upper surface of the conveying plate (14), the shoveling bucket assembly (9) comprises a fixed shoveling bucket (91), the fixed shoveling bucket (91) is arranged on the conveying plate (14), the fixed shoveling bucket (91) is connected with a movable shoveling bucket (92) through a movable assembly, and a scraping plate (93) is fixed at the top end of the movable shoveling; a vibration bottom plate (12) is arranged in a cavity of the lower shell (4), a vibration device (5) capable of vibrating the vibration bottom plate (12) is arranged at the bottom end of the vibration bottom plate (12), the vibration bottom plate (12) is fixed in the lower shell (4) through vibration reduction assemblies (16) arranged on two sides, the shoveling hopper assembly (9) conveys granular materials to the discharge port (7) through a lifting conveying belt (10), the vibration bottom plate (12) in the lower shell (4) vibrates scattered granular materials, and the scattered granular materials are shoveled and conveyed to the discharge port (7) through the shoveling hopper assembly (9);

the two sides of the fixed shovel hopper (91) are fan-shaped, fan-shaped plates (92 a) are arranged on the two sides of the movable shovel hopper (92), fan-shaped cavities (94) are formed in the two sides of the fixed shovel hopper (91), and the movable shovel hopper is inserted into the two sides of the fixed shovel hopper (91) through the fan-shaped plates (92 a);

the movable assemblies are symmetrically arranged on two sides of the fixed shovel hopper (91), each movable assembly comprises a rotating sleeve (95), each rotating sleeve (95) is fixed at the bottom end of a sector plate (92 a), a rotating shaft (96) is sleeved in each rotating sleeve (95), each rotating shaft (96) is fixed in a sector cavity (94), a sector groove is formed in each sector cavity (94), a tension spring (97) is installed in each sector groove, one end of each tension spring (97) is fixed on one side of the upper end of each sector plate (92 a), the other end of each tension spring (97) is fixed at the end of each sector groove, a limiting block (98) is arranged on the side surface of each sector cavity (94), a limiting groove (99) matched with each limiting block (98) is formed in the other side surface of each sector plate (92 a), and each limiting groove (99) is formed in the other side surface of each;

the vibrating device (5) comprises a motor installation box (51), the motor installation box (51) is arranged on the side face of the lower machine shell (4), a vibrating motor (52) is installed in the motor installation box (51), the output end of the vibrating motor (52) penetrates through the side face of the lower machine shell (4) and is fixedly connected with an eccentric wheel (53), an eccentric shaft (54) is arranged on the eccentric wheel (53), and a plurality of rapping assemblies (55) are fixed on the eccentric shaft (54).

2. The anti-blocking bucket elevator is characterized in that a machine head (1) is fixed at the upper end of a machine box shell (2), a lower machine shell (4) is fixed at the bottom end of the machine box shell, a feeding hole (3) is formed in the side face of the bottom end of the machine box shell (2), a conveying motor (6) is fixed on the side face of the lower machine shell (4), and the output end of the conveying motor (6) is connected with a driving wheel (11) through a belt (13).

3. The anti-blocking bucket elevator is characterized in that a plurality of the rapping assemblies (55) comprise a vibrating seat (55 a), a vibrating tension spring (55 b) is arranged in the vibrating seat (55 a), one end of the vibrating tension spring (55 b) is fixed in the vibrating seat (55 a), the other end of the vibrating tension spring (55 b) is connected with a vibrating rod (55 c), and the vibrating rod (55 c) is inserted in the vibrating seat (55 a).

4. The anti-blocking bucket elevator as set forth in claim 1, wherein the vibrating bottom plate (12) is arc-shaped and concave, the damping assembly (16) comprises a damping base (16 a), the damping base (16 a) is fixed at the bottom end of the inner part of the lower housing (4), a damping spring (16 b) is fixed in the damping base (16 a), a supporting rod (16 c) is connected to the upper end of the damping spring (16 b), a supporting plate (16 d) is fixed at the upper end of the supporting rod (16 c), the supporting plate (16 d) is fixedly connected with the vibrating bottom plate (12), and the supporting plate (16 d) is arc-shaped.