GB2214480A - Conveyor belt cleaning apparatus - Google Patents
Conveyor belt cleaning apparatus Download PDFInfo
- Publication number
- GB2214480A GB2214480A GB8801831A GB8801831A GB2214480A GB 2214480 A GB2214480 A GB 2214480A GB 8801831 A GB8801831 A GB 8801831A GB 8801831 A GB8801831 A GB 8801831A GB 2214480 A GB2214480 A GB 2214480A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conveyor belt
- scraper
- cleaning apparatus
- circular
- brackets
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/10—Cleaning devices
- B65G45/12—Cleaning devices comprising scrapers
- B65G45/16—Cleaning devices comprising scrapers with scraper biasing means
Abstract
Belt cleaning apparatus is provided with respective fixing lugs 28 for releasably securing mounting brackets for a scraper assembly 10 in angularly adjusted positions. So that an adjustment can easily be made by one man working alone, the apparatus has fine adjustment means 42 including respective screwthreaded abutment members 48 which can be used to adjust the fixing lugs 28 before locating pegs or bolts 32 are inserted through holes 36 in said lugs, for location in corresponding holes in fixed plate 26. <IMAGE>
Description
Conveyor belt cleaning apparatus.
The invention relates to conveyor belt cleaning apparatus of the kind including a scraper blade or scraper assembly which in use extends transversely of and acts against the conveyor belt, the apparatus being attached to a fixed mounting or mountings, normally to frame structure of the conveyor.
Various constructions of belt cleaning apparatus of the above kind have previously been known. For example, in one particular example, belt cleaning apparatus has included a scraper blade or scraper assembly secured at its opposite ends to respective carrier members constituted by respective leaf springs, the leaf springs being mounted at their ends remote from the scraper assembly on respective mounting brackets pivotally mounted for angular adjustment so that each leaf spring can be preloaded to urge the scraper blade or scraper assembly into contact with the conveyor belt. In other words, during the installation of the cleaning apparatus the respective leaf springs have been subjected to bending by a pivoting action having been applied to the mounting brackets after the scraper blade or scraper assembly, as the case may be, has been brought into contact with the conveyor belt.When the leaf springs have been pre-loaded to an appropriate extent in this way, the mounting brackets have been fixed in their angularly adjusted positions. The scraper blade or scraper assembly has thus been pre-loaded against the conveyor belt by virtue of the resilience of the leaf springs.
In another example the scraper blade or scraper assembly has been connected to respective locating arms mounted at their ends remote from the blade or scraper assembly on respective mounting blocks adjustably connected to respective fixing brackets which can be secured in alignment to frame structure of the conveyor on opposite sides of the belt, the mounting blocks being of composite construction that is to say each block having a metal casing and a centrally located metal sleeve one of which serves for the connection of the block to the respective locating arm and the other of which serves for the connection of the block to the respective fixing bracket, the space surrounding the sleeve within the casing being filled with a synthetic plastics material and the arrangement being such that during the installation of the cleaning apparatus the mounting blocks can be subjected to torsion to appropriately pre-load the scraper blade or scraper assembly against the conveyor belt by virtue of the resilience of the synthetic plastics material of the mounting blocks.
In each of these known arrangements, means whereby the respective leaf springs or respective mounting blocks can be adjustably connected to the fixing brackets have been constituted by respective detent means provided for releasably securing said leaf springs or mounting blocks in angularly adjusted positions, the detent means including respective circular plates secured to the fixing brackets and respective fixing lugs carried by stub shafts connected to the leaf springs or mounting blocks, and locating pegs or respective bolts or screws being provided for insertion through matching holes in the circular plates and adjacent fixing lugs when the scraper blade or scraper assembly has been appropriately pre-loaded against the conveyor belt.These adjustment means have generally worked quite well but do suffer from one particular disadvantage, this being that the adjustment is difficult to make by one man working alone and particularly if he is trying to set up the apparatus with a fair degree of precision. It is found that if the apparatus is not set up with a reasonable degree of precision the scraper blade or scraper assembly can bear with greater force at one side of the belt than the other and this can cause serious damage and even complete failure of the conveyor belt.
The object of the invention is to provide conveyor belt cleaning apparatus which will at least alleviate the disadvantage referred to.
According to the invention, there is provided belt cleaning apparatus including a scraper blade or scraper assembly secured at its opposite ends to respective leaf springs or locating arms mounted at their ends remote from the scraper blade or scraper assembly on respective mounting brackets, said mounting brackets being adjustably connected to respective fixing brackets which can be secured in alignment to frame structure of the conveyor on opposite sides of the belt, and means whereby the respective mounting brackets can be adjustably connected to said fixing brackets being constituted by respective detent means provided for releasably securing said mounting brackets in angularly adjusted positions relative to said fixing brackets, the detent means including respective circular or part-circular plates secured to the fixing brackets and respective fixing lugs carried by stub shafts connected to the mounting brackets, locating pegs or respective bolts or screws being provided for insertion through matching holes in the circular or part-circular plates and adjacent fixing lugs when the scraper blade or scraper assembly has been appropriately pre-loaded against the conveyor belt, there being respective fine adjustment devices provided for releasable mounting on the circular or part-circular plates, each fine adjustment device carrying a screwthreaded abutment member which can be brought into engagement with the adjacent fixing lug and used to carry out a fine adjustment of the pre-loading at the opposite sides of the conveyor belt before the locating pegs or respective bolts or screws have been inserted through the matching holes in the circular or partcircular plates and adjacent fixing lugs.
In order that the invention may be fully understood and readily carried into effect, the same will now be described, by way of example only, with reference to the accompanying drawings, of which:- Figure 1 is a side view of conveyor belt cleaning apparatus embodying the invention,
Figure 2 is a perspective and partly exploded view of the apparatus, and
Figure 3 is a detail view which will be referred to.
Referring now to Figures 1 and 2 of the drawings, the apparatus there illustrated for cleaning a conveyor belt (shown in chain-dotted lines) includes a scraper blade 10 of triangular cross section secured at its opposite ends to locating arms constituted by respective leaf springs 12 so as to bear against the underside of the belt.
The leaf springs 12 are mounted at their ends remote from the scraper assembly on respective mounting brackets 14 which are provided with respective stub shafts 16 of hexagonal cross section. The stub shafts extend rotatably through plain cylindrical bores 18 of respective fixing brackets 20, provided with apertured plates 22, which can be bolted to fixed frame structure (not shown) on the conveyor concerned. Respective circular plates 26 are welded to the fixing brackets 20.
The circular plates 26 form part of respective detent means which are provided for releasably securing the mounting brackets in angularly adjusted positions relative to said fixing brackets. Each detent means includes a fixing lug 28 having a boss portion 30 with a hexagonal bore by means of which it can be located on the respective stub shaft 16. Each detent means also includes a locating peg 32 by means of which the respective fixing lug can be secured to the adjacent circular plate 26. As shown, each circular plate has a plurality of equally spaced sets of holes 34 arranged on two pitch circle diameters and in which the respective pegs can be engaged.Each fixing lug has two sets of three holes 36 (see Figure 3) and these are spaced apart in such a way that by their selective use the fixing lug concerned can be secured to the adjacent circular plate in angular increments of adjustment one sixth of those of the angular spacing of the holes in either one of the sets of holes 34 in the adjacent plate.
The arrangement is such that during the installation of the cleaning apparatus each leaf spring can be pre-loaded to urge the scraper blade into contact with the conveyor belt, that is to say each leaf spring being subjected to bending by a pivoting action being applied to the associated mounting bracket. When the leaf spring has been pre-loaded to an appropriate extent in this way, the mounting brackets will be fixed in their angularly adjusted positions, thus pre-loading the scraper blade against the conveyor belt by virtue of the resilience of the leaf springs.
If two men working together are to install and adjust the apparatus the pre-loading referred to can be carried out fairly easily, an extraneous lever (as shown in chain-dotted lines in Figures 1 and 2) being applied to each of the stub shafts 16 in turn to pre-load the leaf springs before the pegs have been inserted through aligned holes in the circular plates and fixing lugs. However, the adjustment is difficult to make in this way by one man working alone and particularly so if he is trying to set up the apparatus with a fair degree of precision. Consequently, for this eventuality, the apparatus is provided with respective fine adjustment devices, generally indicated 42, for releasable mounting on the circular plates 26.
Each fine adjustment device is constituted by a bifurcated member 44, which can be secured at a selected point around one of the circular plates 26 by means of a pin 46 as shown in Figure 3, and a screwthreaded abutment member 48 which can be adjusted to project a variable distance from the bifurcated member 44. In this way, the abutment member can be brought into engagement with the adjacent fixing lug and used to carry out a fine adjustment of the pre-loading at the opposite sides of the conveyor belt before the locating pegs 32 are inserted through the matching holes in the circular plates and adjacent fixing lugs.
Thus there is provided a very simple means by which one man working alone can set up the apparatus with precision. A further advantage resulting from this is that throughout the subsequent operation of the belt cleaning apparatus, at least until it is next maintained or adjusted, the conveyor belt is less likely to be damaged due to unequal pressure being applied to it at its opposite sides by the scraper blade or scraper assembly.
Various modifications may be made and it will be understood that the invention is not only applicable to ( belt cleaning apparatus having a single scraper blade extending across the full width of the conveyor belt as in the illustrated apparatus. The apparatus could for example have a scraper assembly including a plurality of scraper units located in a side by side row across the width of the belt or possibly in two such rows with the scraper elements located in staggered relation.
The invention is equally applicable to the kind of cleaning apparatus in which a scraper blade or scraper assembly is connected to respective locating arms mounted at their ends remote from the blade or scraper assembly on respective resilient mounting blocks.
Claims (5)
1. Conveyor belt cleaning apparatus including a scraper blade or scraper assembly secured at its opposite ends to respective leaf springs or locating arms mounted at their ends remote from the scraper blade or scraper assembly on respective mounting brackets, said mounting brackets being adjustably connected to respective fixing brackets which can be secured in alignment to frame structure of the conveyor on opposite sides of the belt, and means whereby the respective mounting brackets can be adjustably connected to said fixing brackets being constituted by respective detent means provided for releasably securing said mounting brackets in angularly adjusted positions relative to said fixing brackets, the detent means including respective circular or part-circular plates secured to the fixing brackets and respective fixing lugs carried by stub shafts connected to the mounting brackets, locating pegs or respective bolts or screws being provided for insertion through matching holes in the circular or part-circular plates and adjacent fixing lugs when the scraper blade or scraper assembly has been appropriately pre-loaded against the conveyor belt, there being respective fine adjustment devices provided for releasable mounting on the circular or part-circular plates, each fine adjustment device carrying a screwthreaded abutment member which can be brought into engagement with the adjacent fixing lug and used to carry out a fine adjustment of'the pre-loading at the opposite sides of the conveyor belt before the locating pegs or respective bolts or screws have been inserted through the matching holes in the circular or part-circular plates and adjacent fixing lugs.
2. Conveyor belt cleaning apparatus according to claim 1, in which a scraper blade secured at its opposite ends to respective leaf springs is a scraper blade of triangular cross section.
3. Conveyor belt cleaning apparatus according to claim 1, in which a scraper assembly secured at its opposite ends to respective leaf springs includes a plurality of scraper units located in a side by side row across the width of the belt, or located in two such rows with the scraper elements located in staggered relation.
4. Conveyor belt cleaning apparatus according to any one of the preceding claims, in which the leaf springs or locating arms, as the case may be, are mounted at their ends remote from the scraper blade or scraper assembly on respective resilient mounting blocks.
5. Conveyor belt cleaning apparatus constructed, arranged and adapted to be used substantially as hereinbefore described with reference to and as illustrated by the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8801831A GB2214480B (en) | 1988-01-27 | 1988-01-27 | Conveyor belt cleaning apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8801831A GB2214480B (en) | 1988-01-27 | 1988-01-27 | Conveyor belt cleaning apparatus |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8801831D0 GB8801831D0 (en) | 1988-02-24 |
| GB2214480A true GB2214480A (en) | 1989-09-06 |
| GB2214480B GB2214480B (en) | 1991-09-11 |
Family
ID=10630628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8801831A Expired - Fee Related GB2214480B (en) | 1988-01-27 | 1988-01-27 | Conveyor belt cleaning apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2214480B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5201402A (en) * | 1992-08-24 | 1993-04-13 | Asgco Manufacturing, Inc. | Scraper blade tensioning device |
| US20210394395A1 (en) * | 2020-06-19 | 2021-12-23 | Nitrocrete Ip, Llc | Plow assembly for aggregate cooling in concrete manufacturing |
-
1988
- 1988-01-27 GB GB8801831A patent/GB2214480B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5201402A (en) * | 1992-08-24 | 1993-04-13 | Asgco Manufacturing, Inc. | Scraper blade tensioning device |
| US20210394395A1 (en) * | 2020-06-19 | 2021-12-23 | Nitrocrete Ip, Llc | Plow assembly for aggregate cooling in concrete manufacturing |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8801831D0 (en) | 1988-02-24 |
| GB2214480B (en) | 1991-09-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19930127 |