CN114906539A - Air cushion buffering bed - Google Patents
Air cushion buffering bed Download PDFInfo
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- CN114906539A CN114906539A CN202210238033.4A CN202210238033A CN114906539A CN 114906539 A CN114906539 A CN 114906539A CN 202210238033 A CN202210238033 A CN 202210238033A CN 114906539 A CN114906539 A CN 114906539A
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- Prior art keywords
- air
- bed
- belt
- mould
- buffer
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- 230000003139 buffering effect Effects 0.000 title claims description 22
- 239000004744 fabric Substances 0.000 claims description 21
- 229920002635 polyurethane Polymers 0.000 claims description 11
- 239000004814 polyurethane Substances 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 12
- 239000003245 coal Substances 0.000 abstract description 11
- 238000005299 abrasion Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 14
- 229920001971 elastomer Polymers 0.000 description 9
- 230000007547 defect Effects 0.000 description 7
- 229910000639 Spring steel Inorganic materials 0.000 description 5
- 230000002265 prevention Effects 0.000 description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 4
- 239000003063 flame retardant Substances 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 229920003225 polyurethane elastomer Polymers 0.000 description 2
- 230000003405 preventing effect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/60—Arrangements for supporting or guiding belts, e.g. by fluid jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
- B65G15/32—Belts or like endless load-carriers made of rubber or plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/10—Arrangements of rollers
- B65G39/12—Arrangements of rollers mounted on framework
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/0237—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means involving squeeze-film damping
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Auxiliary Methods And Devices For Loading And Unloading (AREA)
Abstract
The invention relates to the technical field of coal material transportation equipment, and particularly discloses an air cushion buffer bed which comprises an air die arranged below a belt surface of a transfer point of a belt conveyor, an abrasion-resistant plate arranged on the upper surface of the air die, wherein the abrasion-resistant plate is provided with a plurality of air holes communicated with an inner cavity of the air die, and a fan capable of ventilating the air die, wherein the air flow generated by the fan flows out from the air holes to form an air film between the upper surface of the abrasion-resistant plate and the belt surface.
Description
Technical Field
The application relates to the technical field of coal transportation equipment, and particularly discloses an air cushion buffer bed.
Background
Rubber belt conveyor buffer: the buffering device is a necessary device for a transfer point of a belt conveyor, and if no buffering device is arranged, the belt surface of the belt conveyor is seriously damaged, and the service life is shortened.
The coal preparation plant uses belt conveyer to carry out material transport, and at the buffer of blanking point installation, mainly be buffering bed, impact idler two kinds, wherein, impact idler includes spring steel roll frame triple roll or rubber idler, specifically as shown in fig. 1, current sticky tape buffer mainly includes: the rubber buffer carrier roller comprises a rubber buffer carrier roller 1, a spring steel rolling frame triple roller 2 and a polyurethane rubber buffer bed 3.
The existing buffer device has the following insurmountable defects:
(1) large impact loss and poor longitudinal tearing resistance
The impact loss is large: the material falls on the belt surface, and the impact force directly acts on the belt surface, and the buffering no matter is the impact idler or the buffering bed all is hard contact, and the belt surface loss is big.
(2) Large gap between the buffer rollers and poor anti-overflow effect
The buffer strip buffer bed has good material overflow preventing effect. But wear to the skirt is particularly severe and causes running resistance. The belt can be caused to sink when the buffer roller set carries heavily, and the sealing effect is not good.
(3) The disadvantage of the impact-proof effect is obvious.
No matter the buffering bed or the buffering carrier roller belongs to rigid buffering, the impact force is large, the damage to the buffering device is large, and the maintenance is not easy after the damage.
(4) The belt was worn heavily.
The impact idler directly contacts with the conveyer belt, the friction coefficient is more than 0.3, the friction coefficient of the impact bed is more than 0.5, and the abrasion to the conveyer belt is large. The belt pressing accident is easily caused due to the high friction coefficient and large area
(5) Causing a large amount of crushing
The three buffering modes of a buffering bed, a spring steel rolling frame triple roller or a rubber buffering carrier roller are used for carrying out 1.8-meter, 2.5-meter and 3-meter drop tests, the breaking rate of the buffering bed is lowest at 1.8 meters, and the breaking rate of the spring steel rolling frame triple roller or the rubber buffering carrier roller is highest, but the breaking rate is higher in any mode.
In summary, the existing buffer device mainly prevents the belt from being torn longitudinally, has poor anti-overflow effect, absorbs impact force capability, has poor effect on the belt in the aspects of abrasion and the like, simultaneously considers that the actual requirements of preventing lump coal from being broken are poor, the inevitable defects of the buffer bed and the buffer carrier roller are obvious, particularly the inevitable defects are prominent in the aspect of lump carbon transfer loss, and the belt pressing accident is easily caused by large friction force, so that the inventor provides an air cushion buffer bed so as to solve the problems.
Disclosure of Invention
The invention aims to solve the problems that the traditional rubber belt conveyor buffer device has poor indexes such as longitudinal belt tearing, anti-overflow effect, impact force absorption capacity, belt abrasion, lump coal breakage prevention and the like.
In order to achieve the purpose, the basic scheme of the invention provides an air cushion buffer bed which comprises an air mould arranged below the belt surface of a transfer point of a belt conveyor, a wear-resisting plate arranged on the upper surface of the air mould, a plurality of air holes communicated with the inner cavity of the air mould and a fan capable of ventilating the air mould, wherein air flow generated by the fan flows out of the air holes so that the upper surface of the wear-resisting plate and the belt surface form an air film.
Further, the wear-resisting plate is a polyurethane wear-resisting plate.
Furthermore, the air mould is bonded and sewed by adopting an airtight cloth framework.
Furthermore, the air holes are all formed in the surface of the wear-resisting plate through plum blossom-shaped cloth holes.
Furthermore, fire-proof cloth is arranged on the periphery of the polyurethane wear-resistant plate at the bottom of the upper layer of the air mould.
Compared with the prior art, the invention has the following principle and beneficial effects:
according to the principle of air cushion type buffering of the air mould and air film resistance reduction of the air cushion formed on the surface of the belt, air flow is introduced into the air mould through the fan, on one hand, the air mould is inflated to form the air cushion, and the air mould absorbs impact force when heavy objects fall on the air cushion, so that the purpose of buffering is achieved; on the other hand, the air flow forms a layer of air film on the surfaces of the air film and the belt, so that the purpose of reducing the running resistance of the belt conveyor is achieved, the air film and the belt are organically combined to form a novel belt conveyor buffer device which is reliable in running, the novel belt conveyor buffer device overcomes the defects of the original buffer device on the basis of inheriting the original buffer device, and the belt buffer device has great improvement on indexes such as longitudinal tearing, anti-overflow effect, impact force absorption capacity, belt abrasion and lump coal breakage prevention, particularly obvious improvement on the lump coal breakage prevention aspect, obvious reduction in breakage rate and improvement on the yield of large coal materials.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 shows a schematic view of a conventional cushion device of a belt conveyor;
FIG. 2 is a schematic diagram of an air cushion buffer bed according to an embodiment of the present application;
fig. 3 shows a static height drop data table of an air cushion buffer bed and a conventional rubber belt conveyor buffer device according to an embodiment of the present application.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Reference numerals in the drawings of the specification include: the rubber buffer carrier roller 1, the spring steel roll frame triple roll 2, the polyurethane rubber buffer bed 3, the fan 4, the air mould 5 and the polyurethane wear-resistant plate 6.
An air cushion buffer bed, the embodiment shown in figure 2: including establishing the air model 5 of the belt face below of band conveyer reprinting point and establishing the resistant board 6 of polyurethane at 5 upper surfaces of air model, be equipped with a plurality of gas pockets that communicate with 5 inner chambers of air model on the resistant board 6 of polyurethane, the gas pocket adopts plum blossom cloth hole all to locate the surface of antifriction plate, with plum blossom shape cloth hole on the wide area of 1.5 meters length 800mm in bearing range, wherein well eye is in the middle of the rectangle, gas membrane clearance 1.7mm, contrast rectangle cloth hole mode, under the condition that fan 4 is the same, it is best to adopt plum blossom cloth hole effect.
The air mould 5 adopts the airtight cloth framework for bonding and seaming, and through experimental comparison and detection, the airtight cloth framework is seamed or the airtight cloth framework is bonded, no matter the joint is airtight or firm, the airtight cloth framework is bonded and seamed, the air mould 5 has more excellent performance, and can achieve the purposes that the seam joint has no air leakage and the seam joint has no open line, broken mouth and air leakage under the condition of bearing heavy pressure, the airtight cloth framework is seamed and used to generate fine air leakage, and the open line, broken mouth and air leakage occurs on the fifth day; the bonding mode of the air-tight cloth framework has fine air leakage and open-line crevasse air leakage when the air-tight cloth framework is used on the fifth day.
The belt punching machine also comprises a medium pressure fan 4 which can ventilate the air mould 5, air flow generated by the medium pressure fan 4 flows out from the air holes to enable the upper surface of the wear-resisting plate and the belt surface to form an air film, and the air film is formed in the middle of the belt and the cushion punching machine by utilizing large air volume and air pressure to reduce the running resistance.
In the invention, the periphery of the polyurethane wear-resistant plate 6 at the bottom of the upper layer of the gas mold 5 is provided with the fireproof cloth, the mode of the fireproof cloth at the periphery of the flame-retardant adhesive tape at the bottom of the upper layer is compared, the mode of the fireproof cloth is arranged at the periphery of the polyurethane wear-resistant plate 6 at the bottom of the upper layer of the gas mold 5, on the premise of meeting the same fireproof flame retardance, the wear resistance can be realized, in the same experimental comparison, the flame-retardant belt in the mode of the fireproof cloth at the periphery of the flame-retardant adhesive tape at the bottom of the upper layer is ground by 0.5mm, and the polyurethane wear-resistant soft plate in the mode of the fireproof cloth arranged at the periphery of the polyurethane wear-resistant plate 6 at the bottom of the upper layer of the gas mold 5 has an unobvious trace, and the experimental conditions are as follows: the fire resistance is more than 10 minutes; the lowest flame retardant rating. Requiring a burn rate of less than 40mm per minute for samples 3 to 13mm thick; a sample less than 3mm thick with a burning rate less than 70mm per minute; or extinguished before the 100mm mark and the experimental time was 10 minutes.
The invention adopts the uninterrupted air supply air die 5, the blanking points are in full-section contact, gaps among longitudinal buffer strips of the original buffer bed are avoided, and after material leakage, hard objects have larger expansion allowance under the buffer of the air die 5, so that longitudinal tearing can not be caused, the defects of the original buffer device are thoroughly overcome, and the occurrence of longitudinal tearing is effectively prevented.
The belt is supported comprehensively by the air mold 5, only sinks at the blanking point during blanking, is unchanged at the non-blanking point, has good sealing effect, namely good anti-overflow effect, and simultaneously reduces the friction resistance due to the action of the air film.
The air mold 5 of the invention provides comprehensive support for the belt in the blanking area, and the impact strength is the same as that of a buffer press: over 100kg, the whole buffering effect is better, the impact force is absorbed by the air bag and belongs to soft buffering contact, the damage to the belt surface is minimum, the impact force is absorbed by the air, uninterrupted air supply can be recovered at any time, the impact strength is equal to that of a heavy buffering bed, and the damage to the belt surface is minimum due to soft landing.
The invention adopts the principle of an air cushion belt, the middle of the contact of the air mould 5 soft buffer bed and the conveyer belt is provided with a layer of air film, the friction coefficient is below 0.11, the abrasion to the belt is minimum, simultaneously, the invention overcomes the phenomenon of large belt pressing of the friction resistance of the heavy buffer bed, the invention has the function of reducing the friction resistance when the middle air film is contacted with the conveyer belt, overcomes the defect of large friction resistance between the heavy buffer bed and the polymer plate, and has better effect.
As shown in fig. 3, in the static test of three high static states performed on the existing buffer device and the air cushion buffer bed of the present invention, in the existing buffer device, no matter whether the buffer carrier roller or the heavy buffer bed is in hard landing, the material breakage rate is high, and the breakage rate measured at each transfer point is 0.07%, but in the present invention, the novel soft buffer bed has no static test block breakage rate through the test, the breakage rate realized by the novel soft buffer bed is not in the buffer bed, the collision loss between the materials is buffered by the air model 5, the material at the transfer point falls on the air model 5, and the air model 5 absorbs most of the falling impact force, thereby avoiding the falling breakage, the falling material itself can not be broken, the breakage of the interaction between the materials becomes the main reason in the falling process, and the breakage rate at the transfer point is reduced to 0.02%.
Compared with the prior art, the belt anti-overflow device overcomes the defects of the original buffer device on the basis of inheriting the original buffer device, greatly improves indexes such as longitudinal tearing of the belt, an anti-overflow effect, impact force absorption capacity, belt abrasion and lump coal breakage prevention, particularly obviously improves the lump coal breakage prevention, obviously reduces the breakage rate, and improves the yield of large coal materials.
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.
Claims (5)
1. An air cushion buffering bed which is characterized in that: including establishing the air mould of the belt face below of band conveyer reprinting point and establishing the antifriction plate at the air mould upper surface, be equipped with a plurality of gas pockets that communicate with the air mould inner chamber on the antifriction plate, still include the fan that can ventilate in to the air mould, the air current that the fan produced flows out from the gas pocket and causes antifriction plate upper surface and belt face to form the air film.
2. The air cushion cushioning bed of claim 1, wherein said wear plates are polyurethane wear plates.
3. An air cushion cushioning bed as claimed in claim 1 or 2, wherein said air form is stitched with air-tight fabric frame adhesive.
4. The air cushion buffer bed as claimed in claim 3, wherein said air holes are made of plum blossom shaped holes on the surface of the wear-resistant plate.
5. The air cushion buffer bed as claimed in claim 1 or 4, wherein the polyurethane wear-resistant plate at the bottom of the upper layer of the air mould is provided with fire-proof cloth at its periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210238033.4A CN114906539A (en) | 2022-03-11 | 2022-03-11 | Air cushion buffering bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210238033.4A CN114906539A (en) | 2022-03-11 | 2022-03-11 | Air cushion buffering bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114906539A true CN114906539A (en) | 2022-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210238033.4A Pending CN114906539A (en) | 2022-03-11 | 2022-03-11 | Air cushion buffering bed |
Country Status (1)
| Country | Link |
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| CN (1) | CN114906539A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101980892A (en) * | 2008-03-26 | 2011-02-23 | 可隆工业株式会社 | A side curtain airbag and airbag system comprising the same |
| US20140048388A1 (en) * | 2012-08-14 | 2014-02-20 | Kenneth Monroe Hefner | Conveyor system, conveyor apparatus and troughed pulley |
| CN203940169U (en) * | 2014-07-08 | 2014-11-12 | 苏立鹏 | The special-purpose baffler of a kind of steam |
| CN106696884A (en) * | 2015-07-31 | 2017-05-24 | 张文超 | Automobile rear-row safety airbag protection equipment |
| CN109230224A (en) * | 2018-09-06 | 2019-01-18 | 山西省阳泉荫营煤矿 | A kind of soft landing air film type low-resistance belt is buffer bed |
| CN212739412U (en) * | 2020-08-15 | 2021-03-19 | 山东大圣机械制造有限公司 | Air film buffering material receiving bed for belt conveyer |
| CN213994520U (en) * | 2020-09-02 | 2021-08-20 | 丽水市人民医院 | Breathe oxygen mask for internal medicine |
-
2022
- 2022-03-11 CN CN202210238033.4A patent/CN114906539A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101980892A (en) * | 2008-03-26 | 2011-02-23 | 可隆工业株式会社 | A side curtain airbag and airbag system comprising the same |
| US20140048388A1 (en) * | 2012-08-14 | 2014-02-20 | Kenneth Monroe Hefner | Conveyor system, conveyor apparatus and troughed pulley |
| CN203940169U (en) * | 2014-07-08 | 2014-11-12 | 苏立鹏 | The special-purpose baffler of a kind of steam |
| CN106696884A (en) * | 2015-07-31 | 2017-05-24 | 张文超 | Automobile rear-row safety airbag protection equipment |
| CN109230224A (en) * | 2018-09-06 | 2019-01-18 | 山西省阳泉荫营煤矿 | A kind of soft landing air film type low-resistance belt is buffer bed |
| CN212739412U (en) * | 2020-08-15 | 2021-03-19 | 山东大圣机械制造有限公司 | Air film buffering material receiving bed for belt conveyer |
| CN213994520U (en) * | 2020-09-02 | 2021-08-20 | 丽水市人民医院 | Breathe oxygen mask for internal medicine |
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