MXPA97008976A - Scraper band transport - Google Patents

Abstract

The present invention relates to a conveyor belt scraper adapted for use in cleaning the surface of a conveyor belt, the scraper is characterized in that it includes: a first resilient arm member having a first end and a second end, this flexible being first arm member in response to compressive loads, a scraper member having a first surface defining a scraping edge, the scraping member is connected to the second end of the first arm member and spaced from the first end of the first arm so that it allows the resilient movement of the scraper member towards the first end of the first arm member, a second resilient arm member having a first end and a second end, the second end of the second arm member is selectively connected to the scraper member with spacing being scraper member of the first end of the second arm member so as to allow resilient movement of the scraper member towards the first end of the second arm member, and first connecting means for selectively connecting the second end of the second arm member to the scraper member whereby the second arm member is selectively removable from and connectable to the member. of scraping and the scraper blade is resiliently mounted to move in response to reversal of band travel or compressive loads

Description

TRANSPORTATION BAND SCRAPER BLADE Related Requests This corresponds to a continuation-in-part of the U.S. Patent application. Serial No. 08 / 430,394 filed April 28, 1995, currently pending, which is a continuation-in-part of the U.S. Patent application. Serial No. 08 / 269,568 filed July 1, 1994, now US Pat. No. 5,413,208 issued May 9, 1995. BACKGROUND OF THE INVENTION The present invention is directed to a scraper blade for use in a conveyor belt cleaning mechanism, for the removal of adherent material from the conveyor belt and in particular to a scraper blade which includes a structure adapted to control or eliminate the vibration amplitude of the scraper blade during use, when the blade face is located at a straight cleaning angle or an obtuse angle with respect to the conveyor belt. Scraper blades are used in conveyor belt cleaning mechanisms to remove material that adheres to the belt surface after the material has passed the point of material discharge from the conveyor. The angle of cleaning of a scraper blade, which is the angle between the surface of the conveyor belt and the face of the scraper blade facing the entry or entry belt, may be an acute angle less than 90 degrees, a right angle of 90 degrees. degrees, or an obtuse angle greater than 90 degrees. As used below, "obtuse angle" should include a right angle of 90 degrees. Scraper blades that operate at a sharp cleaning angle tend to trap material between the belt surface and the scraper blade since the direction of movement of the adherent material must change by more than 90 degrees during removal. A scraper blade operating at a sharp cleaning angle can also be separated from the belt surface due to an accumulation of skid material between the blade and the conveyor belt, a condition known as "brushing". A scraper blade operating at an obtuse cleaning angle is more efficient in removing adhesive material from the web since the adherent material is not trapped between the web and the web and since the adhesive material can not be removed with a smaller change in the web. the direction of travel of the adherent material which are a scraper blade having a sharp cleaning angle. While an obtuse cleaning angle is preferable to an acute cleaning angle, and a resiliently mounted blade is preferred to a rigidly mounted blade, resiliently mounted scraper blades have an obtuse cleaning angle are subject to cleaning and destructive efficiency which reduces the vibration on the scraper edge of the scraper blade. When a scraper blade engages against the surface of the strip, a moment of rotation is created in the scraper blade by the dragging of the strip on the edge of the scraper blade. When pressed against a conveyor belt, with a pre-determined force to generate a pre-determined cleaning angle, a resiliently mounted scraper blade having a sharp cleaning angle will rotate in a direction away from the belt surface, reducing this way the drag force created by the band. This results in a small comparative rotation and consequently, only a small change in orientation from the natural orientation of the scraper blade, thus producing a relatively stable and constant relationship between the blade and the surface of the band with little or no blade vibration. resulting scraper. A resiliently mounted scraper blade that has an obtuse cleaning angle and applied against the band with the same pre-determined cleaning pressure will rotate in a direction toward the belt surface, causing a direction in the blade support mechanism that is moves in a direction away from the surface of the band, thus reducing the drag force, which immediately causes the resiliently mounted blade to rapidly move back to its natural orientation, allowing the blade support mechanism to rotate towards the belt surface and resume the pre-cleaning pressure. -determined, which causes the same cycle of action and reaction to start again. This unstable fluctuating relationship between the blade and the surface of the band is seen as vibration of the scraping edge of the scraper blade with respect to the surface of the band, which is undesirable. Scraper blades having an obtuse cleaning angle have previously been employed as illustrated in U.S. Pat. No. 4,787,500. Ribs and other devices have been used to reinforce the base of a scraper blade, but these reinforcements control the vibration of the scraper edge, increasing the rigidity, thus reducing resilience and thus increasing the risk of damage to the conveyor belt and the cleaning mechanism. SUMMARY OF THE INVENTION A conveyor belt scraper is adapted to be used in a conveyor belt cleaner to clean the surface of a conveyor belt. The conveyor belt scraper includes a mounting base having a first mounting member and a second mounting member. The mounting base is adapted to mount to a cross shaft of a conveyor belt cleaning device. The scraper also includes a scraping head having a scraping member and a restricting arm member. The scraping member includes a front scraping surface having a scraping edge and an upper surface extending from the scraping edge, such that the front scraping surface and the top surface are arranged at an acute angle to each other. , regarding the scraping edge. The front scraping surface is adapted to form an obtuse scraping angle with the surface of the conveyor belt. The scraping member also includes a mounting member and a rib connected to the front scraping surface adjacent the scraping edge. The restriction arm member includes a first end and a second end. The second end of the restriction arm member is connected to the rib of the scraping member. The first end of the restriction arm member includes a mounting member that is adapted to form a selectively interengaging connection with the second mounting member of the mounting base. The scraper also includes a support arm member having a first end that includes a first mounting member and a second end that includes a second mounting member. The first mounting member of the support arm member is adapted to form a selective interengaging connection with the first mounting member of the mounting base and the second mounting member of the support arm member is adapted to form a selective interengaging connection with the mounting member of the scraper member, such that the support arm member is separated from the restricting arm member. The support arm member is selectively removable and replaceable from the scraping head and mounting base. The scraping head is similarly removable and replaceable from the support arm member and the mounting base. The restricting arm member of the scraping head is preferably made from a material having a modulus of elasticity that is superior to the material from which the supporting arm member is made, such that the arm member Restriction is relatively resistant to elongation due to stress loads compared to the support arm member. The constraining arm member is relatively flexible so that it can be bent or crushed in response to compression loads.

DESCRIPTION OF THE DRAWINGS Figure 1 is a side elevational view of a scraper blade of the present invention, illustrated as mounted on a cross shaft for engagement with a conveyor belt. Figure 2 is a front elevational view of the scraper blade taken over lines 2-2 of Figure 1. Figure 3 is a rear elevation view of the scraper blade taken over lines 3-3 of the Figure 1. Figure 4 is a partial side elevation view of a modified embodiment of the scraper blade. Figure 5 is a front elevation view of the modified scraper blade embodiment taken on lines 5-5 of Figure 4. Figure 6 is a side elevational view of another embodiment of the scraper blade of the present invention that It is illustrated mounted on a cross shaft for coupling with a conveyor belt. Figure 7 is a front elevational view of the scraper blade embodiment of Figure 6. Figure 8 is a rear elevational view of the scraper blade embodiment of Figure 6.

Figure 9 is a side elevational view of a further modified embodiment of the scraper blade of the present invention, illustrated mounted on a cross shaft for engagement with a conveyor belt. Figure 10 is a perspective view of the mounting base illustrated in Figure 9. Figure 11 is a side elevational view of the scraper head illustrated in Figure 9. Figure 12 is a front elevational view of the head scraper that is taken on lines 12-12 of Figure 11. Figure 13 is a side elevation view of the support arm member taken from the opposite side of the support arm member as illustrated in Figure 9. Figure 14 is a front elevational view of the support arm member taken over lines 14-14 of Figure 13. Figure 15 is a side elevation view of an additional modified embodiment of the scraper blade of the present invention. . Figure 16 is a front elevation view of a modified scraper head. Figure 17 is a rear elevation view of the modified scraper head of Figure 16.

Description of the Preferred Modes Figure 1 shows an embodiment of the scraper blade 10, mounted on an elongate cross shaft or support member 12, having a longitudinal axis 13, for scraping engagement with the surface 14 of the return section of a belt conveyor 16. Conveyor belt 16 is illustrated slightly spaced from scraper blade 10 in Figure 1 for purposes of illustration, however, scraper blade 10 will normally be in scraping engagement with surface 14 of conveyor belt 16, during operation. The conveyor belt 16 runs in a direction illustrated by the arrow T. The transverse arrow 12 is illustrated in a rectangular tubular member, however other configurations of transverse arrows may be employed as desired to support one or more scraper blades 10, as part of the conveyor belt cleaning mechanism. The scraper blade 10 includes a resilient arm member 20 having an upper end portion 22 and a lower base portion 24. The base portion 24 extends between a rear and bottom edge 25 and a lower front edge 27. arm 20 includes a front wall 26 and a rear spaced and opposite wall 28. the rear wall 28 is relatively strong in compression while the front wall 26 is relatively weak in compression, as compared to the rear wall 28. An opening 30 extends transversely through the arm member 20 between the walls 26 and 28 from a first side wall surface 32 to a second side wall surface 34. The opening 30 may have several different configurations as desired such as round, rectangular, triangular and its variations. The construction of arm member 20 can be as is generally described in US Pat. No. 5,310,042 that was assigned to Martin Engineering, the present applicant. While the arm member 20 of the preferred embodiment includes an opening 30 as illustrated in Figure 1, the arm member 20 can also be formed without the opening 30, if desired. The arm member 20 is resilient and preferably made of the elastomeric material such as urethane. The scraper blade 10 includes a mounting base 40 which is connected to the lower arm portion 24 of the arm member 20. The mounting base 40 is illustrated in generally rectangular Figure 1 with a rectangular opening 42 extending transversely. The rectangular opening 42 is adapted to fit closely around the rectangular transverse arrow 12, such that the mounting base 40 can slide longitudinally on the transverse arrow 12 but can not rotate with respect to the transverse arrow 12 with respect to the longitudinal axis 13. Many other types of mounting structures other than the mounting base 40 illustrated in Figure 1 may be employed as desired, to mount the arm member 20 on the transverse shaft 12. A plurality of scraper blades 10 may be mounted on the cross shaft 12 adjacent to each other. The scraper blade 10 also includes a scraping member 50 which is connected to the upper end portion 22 of the arm member 20. The scraping member 50 includes a front surface 52 having an upper surface portion 55 and a surface portion. bottom 56. The front surface 52 extends between an upper scraping edge 54 of the upper surface portion 55 and a lower edge of the lower surface portion 56. The front surface 52 faces the intake conveyor 16 to which it is attached. Adhere the material. As best illustrated in Figure 1, the front surface 52 defines an arched wall 53 having the general shape of a parabola, however the wall 53 may be circular, generally V-shaped or other configurations as desired. The upper surface portion 55 extending from the scraping edge 54 is illustrated as being slightly curved, but may also be planar. The front surface 52 extends transversely as illustrated in Figure 2, between a left edge 58 and a right edge 60. The front surface 52 forms a generally arched chamber 61 defined by the wall 53. The chamber 61 has an inlet end at the scraping edge 54 adapted to receive material removed from the strip 16 of an outlet end in the lower surface portion 56 adapted to discharge the material removed from the chamber 61. The scraping member 50 also includes a rear surface 62 spaced apart from and opposite the front surface 52. A generally planar top surface 64 extends between the scraping edge 54 and the back surface 62. The scraping edge 54 and the top surface 64 are adapted to engage the web surface 14 conveyor 16. Although the upper surface 64 is illustrated in Figure 1 as being generally horizontal and parallel to the surface 14 of the strip 16, when the blade ra spacer 10 is in its natural orientation, upper surface 64 can be oriented in other positions as may be considered convenient. For example, the upper surface 64 may extend from the scraping edge 54 upwards or downwards from the rear surface 62 at an angle to the horizontal.

As illustrated in Figure 1, the upper surface portion 55, which attaches the scraping edge 54, forms an oblique scraping angle with the surface 14 of the conveyor belt 16 which provides all the previously discussed advantages for operation in one mode of detachment. The scraping member 50 is resilient and preferably made of an elastomeric material such as urethane. It is preferred that the opening 30 in the arm 20 be located as illustrated in Figure 1 completely to the front side of a line extending between the scraping edge 54 and the lower rear edge 25 of the base portion 24 of the arm 22. The scraper blade 10 also includes a restriction member 70. The restriction member 70 illustrated in Figures 1 and 2 is in the form of a rib having a left side surface 72, a right side surface 74 and a surface exterior 76 that extends between them. The restriction member 70 is connected at its end to the upper surface portion 55 of the front surface 52, adjacent the scraping edge 54 at the inlet end of the chamber 61 and extends downwardly over the lower surface portion 56. of the front surface 52 and is connected at its lower end with the lower surface portion 56 of the front surface 52, adjacent to the outlet end of the chamber 61. The restriction member 70 prevents separation of the inlet end from the end of the chamber. exit, beyond a pre-determined distance that is the distance between the ends when the blade does not engage against the band. This effectively controls scraper blade vibration during operation. As best illustrated in Figure 1, the outer surface 76 of the restriction member 70 extends substantially between the scraper edge 54 and an arm member 20, on a path that is slightly curved but can be substantially linear. The outer surface 76 of the restriction member 70 preferably forms a right angle or an acute cleaning angle with the surface 14 of the strip 16. The restriction member 70 is preferably made of an elastomeric material such as urethane. The restriction member 70 must be capable of resisting any substantial elongation under tensile work loads. The scraper blade 10 may include a plurality of restricting members as illustrated in Figure 5. Although the restriction member 70 is illustrated external to the scraper member 50, the restriction member may comprise a rigid member such as a plate (not shown). ) which is embedded in the scraper member 50 and which extends from adjacent the scraping edge 54 to the lower surface portion 56. In operation, the scraping edge 54 and the upper surface 64 of the scraper blade 10 illustrated in Figures 1 to 3 are pressed in scraping engagement with the surface 14 of the conveyor belt 16. If the upper surface 64 of the blade 10 is formed at an angle extending upwardly from the scraping edge 54, instead of extending horizontally and parallel to it. the band 16 as illustrated in Figure 1, the arm member 20 will flex as the blade 10 is pressed into engagement with the band 16, allowing the upper surface 64 gi Referring back to a position where the upper surface 64 is parallel to and in engagement with the web 16. If the top surface 64 is formed at an angle extending downwardly from the scraping edge 54, only the scraping edge 54 and a portion of the upper surface 64 adjacent the scraping edge 54 may be in engagement with the web 16. As the web 16 is pulled through the scraping edge 54, the scraping member 50 and an arm member 20 pivot resiliently respect to an axis 80 extending transversely through the lower base portion 24 of the arm member 20. It is preferred that the scraping edge 54 be located after the axis 80 such that a line extending across the edge of scraping 54 and the shaft 80 forms an acute angle with the surface 14 of the conveyor belt 16. During operation, the restriction member 70 prevents the scraping edge 54 and the end within the band 61 from separating from the lower surface portion 56 and the exit end of the chamber 61 beyond a predetermined distance. The restriction member 70 substantially prevents movement of the scraping edge 54 and entrance end of the chamber 61, either in a direction away from or in an direction towards the lower surface portion 56 and the exit end of the chamber 61 and this way substantially avoids movement of the scraping edge 54 with respect to the wall 53 and keeps the profile of the wall 53 substantially uniform during use. The restricting member 70 in this manner controls the vibration amplitude of the scraping edge 54 of the scraper blade 10. Although vibration can be completely eliminated, some vibration amplitude may be desirable in certain situations such as when the materials being transported tend to to adhere to the blade. In this situation, some amplitude of vibration may be desirable to protect the blade from these adhering materials. This can be achieved by varying the configuration and design of the restriction member 70 to allow limited separation of the scraping edge 54 from the lower surface position 56 during use beyond the predetermined distance. Figures 4 and 5 show a scraper blade 90 which is a modified embodiment of the scraper blade 10. Scraper blade 90 includes a mounting base 40 and an arm member 20 as in the scraper blade 10 illustrated in Figures 1 to 3. The scraper blade 90 includes a scraping member 92 that is similar to the scraping member 50 except that the scraping member 92 as illustrated in Figure 4 includes scraping element 94 located on an upper portion of the front surface 93. The scraping element 94 forms a scraping edge 96. The scraping element 94 can alternatively be connected to the upper surface 97 of the shaving member 92. The shaving member 94 is preferably made of a material that is more rigid than that of the shaving member. scraping member 92. Scraping member 94 is preferably made from a rigid or hard metal such as tungsten carbide. Scraping element 94 provides increased abrasion resistance to reduce scraper blade wear from scraping engagement with web 16.

The scraper blade 90 includes a pair of restriction members 98 and an arched chamber 99. Only one restriction member 98, or more than two restriction members 98, may be employed if desired. Each restriction member 98 is an elongate member having an upper end 100 and a lower end 102. The upper end 100 is connected to the upper surface portion 101 of the front surface 93 of the scraping member 92, or to the scraping element. 94 adjacent the scraping edge 96 at the inlet end of the chamber 99. The lower end 102 connects to the outlet end of the chamber 99, in the lower surface portion 103 of the front surface 93 and to the arm member 20 As best illustrated in Figure 4, an opening 104 is formed between the restriction members 98 and the central portion of the front surface 93. The restriction members 98 can be formed from a web of elastomeric material such as urethane, or they can be made from other materials such as cable or steel chain. As with the restriction member 70, the restriction members 98 must be able to withstand any substantial elongation under tensile work loads. The scraper blade 90 operates substantially in the same manner as the scraper blade 10. The scraping edge 96 and the inlet end of the chamber 99 are prevented by restricting members 98 that are separated from the lower surface portion 103 and the end output from camera 99 beyond a predetermined distance. The restricting members 98 in this manner control the vibration amplitude of the scraping edge 96 of the scraper blade 90. Figures 6 to 8 illustrate a modified embodiment of the scraper blade of the present invention, generally designated with the numeral 110. The blade scraper 110 includes a resilient arm member 112, having an upper portion 114 and a bottom portion 116. The bottom portion 116 of the arm member 102 includes a front wall 118 and an opposite and spaced rear wall 120. The rear wall 120 it is relatively strong in compression, while the front wall 118 is relatively weak in compression, as compared to the rear wall 120. An opening 122 extends transversely through the bottom portion 116 of the arm member 112 between the front wall 118. and the rear wall 120 from a first side wall surface 124 to a second side wall surface 126 The bottom portion 116 of the member arm bro 111 is constructed similarly to arm member 20 and as generally described in US Pat. No. 5,310,042. Alternatively, the opening 122 can be removed such that the bottom portion 116 is solid. The bottom portion 116 of the arm member 112 is resilient and preferably made of elastomeric material such as urethane. The upper portion 114 of the arm member 112 includes a front wall 130 that functions as a restriction member. The front wall 130 includes a bottom end 131 which integrally connects and integrates with the front wall 118 of the bottom portion 116 and extends up therefrom to an upper edge 132 formed at an upper end 133 of the front wall 130. The front wall 130 extends between a left edge 134 and a right edge 136. The left edge 134 extends upwardly from the first side wall surface 124 of the bottom portion 116 to the top edge 132, and the right edge 136 extends upward from the second side wall surface 126 of the bottom portion 116 to the top edge 132. The left edge 134 and the right edge 136 converge with each other as they extend from the side wall surfaces 124 and 126 toward the edge upper 132. The front wall 130 is illustrated as terminating at the generally linear upper edge 132, such that the front surface 130 is in the general shape of a truncated triangle com or is illustrated in Figure 7. The front wall 130, however, it can also be formed generally from a triangle, wherein the left edge 134 and the right edge 136 of the front wall 130 converge at a point or in other shapes, as desired. The upper portion 114 of the arm member 112 also includes a rear wall 140 that functions as a support member. The rear wall 140 extends upwardly from the rear wall 120 of the bottom portion 116 to an upper end 142. The rear wall 120 can be spaced from or integrally formed with the front wall 130. As best illustrated in Figure 8, the rear wall 140 is generally formed of a truncated triangle having a left edge 144 extending between the second side wall surface 126 of the bottom portion 116 and the top end 142 and a right edge 146 extending toward up between the first side wall surface 124 of the bottom portion 116 and an upper end 142. The top portion 114 also includes a first side wall surface 150 extending between the right edge 146 of the rear wall 140 and the edge left 134 of the front wall 130. The first side wall surface 150 extends upward from the first side wall surface 124 of the bottom portion 116 to a bo The upper portion 156 extends generally linearly between the upper edge 132 of the front wall 130 and the upper end 142 of the rear wall 140. The upper portion 114 of the arm member 112 also includes a second side wall surface 154, which it extends upwardly from the second side wall surface 126 of the bottom portion 116 to an upper edge 156 and extending between the left edge 144 of the rear wall 140 and the right edge 136 of the front wall 130. As shown in FIG. illustrated in Figure 6, the upper portion 114 may if desired include an opening 158 as illustrated in dotted lines extending through the upper portion 114 such that the front wall 130 and the rear wall 140 are spaced apart from each other. yes. The upper portion 114 of the arm member 112 is preferably constructed of a resilient elastomeric material such as urethane. Scraper blade 110 includes a mounting base 164 which is connected to the lower end of the bottom portion 116 of the arm member 112. the mounting base 164 is removably mounted on the transverse shaft 12 and is preferably slidable on the transverse shaft 12, but can not rotate with respect to the transverse arrow 12 with respect to the longitudinal axis 13. The arm member 112 can be mounted to the transverse shaft 12 with various types of mounting structures as desired.

The scraper blade 110 also includes a scraping member 170 that integrally connects to the upper portion 114 of the arm member 112. The scraping member 170 includes a front surface 172. The front surface 172 is generally planar and extends between an edge linear scraping 174 and a trailing edge 176 and between the left edge 178 and a right edge 180. The front surface 172 faces the input conveyor 16, to which the material adheres. The scraping member 170 also includes a generally planar top surface 182 that extends between the scraping edge 174 and a trailing edge 184 and between a left edge 186 and a right edge 188. The scraping edge 174 and the top surface 182, they are adapted for sliding engagement of the surface 14 of the conveyor belt 16. The scraping member 170 also includes a rear surface 190 that extends between the trailing edge 184 of the upper surface 182 and the trailing edge 176 of the front surface 172 and between a left chamfered edge 192 and a right chamfered edge 194. The scraping member 170 also includes a generally triangular left wall surface 196, which extends between the left edge 186 of the top surface 182, the left edge 178 of the surface front 172 and right edge 194 of rear surface 190. A generally triangular right wall surface 198 extends over between the right edge 188 of the upper surface 192, the right edge 180 of the front surface 172 and the left edge 192 of the rear surface 190. The front surface 172 is arranged at an acute angle with respect to the upper surface 182 and Preferably it is arranged at an angle of approximately six degrees with respect to the upper surface 182. The front surface 172 is designed to be arranged at an obtuse angle with respect to the surface 14 of the conveyor belt 16. The front surface 172 may be generally planar or may be curved between the scraping edge 174 and the trailing edge 176. The rear surface 190 is shown curved but may be planar. As best shown in Figure 6, the scraping member 170 is generally triangular in cross section. The scraping member 170 can be made of various materials as desired such as urethane. The scraping member 170 may include a metal scraping element such as the scraping element 94 illustrated in Figure 4. The scraping member 170 may be formed completely or in part with a low friction material such as nylon, ultra high polyethylene. molecular weight, polytetrafluoroethylene (PTF), silicone or a low friction material sold under the name XYLETHON by Dura Wear of Birmingham, Alabama. The low friction material preferably has a coefficient of sliding friction equal to or less than 0.7 with rubber and in the preferred embodiment equal to or less than 0.6 with rubber. The low friction material may be provided in the form of an insert 200 integrally molded with or mechanically fastened to the scraping member 170 or the arm member 112. As illustrated in Figure 6, the insert 200 may be generally triangular, extending between a trailing edge 202, the upper surface 182 and the front surface 180, forming a portion of the upper surface 182, the front surface 180 and the scraping edge 174. The insert 200 can also be formed in other shapes as desired and may comprise a layer having a desired thickness that forms the upper surface 182 or a portion thereof, and the scraping edge 174. The low friction material reduces friction and the amount of drag created between the upper surface 182 and the surface 14 of the conveyor belt 16. At the upper end 133 of the front wall 130 a the upper portion 114 of the arm member 112 is connected to the front surface 172 of the scraping member 170 such that the upper end 133 and the upper edge 132 of the front wall 130 are located at the scraping edge 170, or closely adjacent as illustrated in Figure 6. The bottom end 131 of the front wall 130 is connected to the front wall 118 of the bottom portion 116 of the arm member 112 and thus to the mounting base 164. The wall rear 140 of the upper portion 114 is connected to the front surface 172 of the scraping member 170, preferably at the trailing edge 176 of the front surface 172. In operation, the scraping edge 174 and the upper surface 182 d the scraping member 170, are pressed in scraped engagement with the surface 14 of the conveyor belt 16. This requires a counterclockwise rotation from the position illustrated in Figure 6. The scraping edge 174 and the front surface 172 removes the adherent material from the surface 14 of the conveyor belt 16. The removed adhesive material traverses the front surface 162 and is discharged at the trailing edge 176 of the front surface 172. The front surface 172 is located at a approximate angle of 60 degrees with respect to the upper surface 182. Material q \). { e is removed from the conveyor belt 16 therefore changes its direction of travel to approximately 60 degrees as it changes from its travel direction on the web 16 to its travel direction on the front surface 172. The small change in the travel angle of the removed material that is provided by the scraping member 170 results in a relatively small force applied to the scraping member 170 by the adhering material engaging the front surface 172. This force attempts to separate the scraping member 170 from the conveyor belt 16. A small or reduced separation force as provided by scraping member 170, thus improves cleaning operations. The front wall 130 as illustrated in Figure 7 includes a small profile, especially at the top edge 132, which faces the adhere material and thereby provides a small area for the adherent material to come into contact with the top surface 114 of the arm member 112. The front wall 130 functions as a restricting member and substantially prevents movement of the scraping edge 174 towards or away from the bottom portion 118 of the arm 112. The restricting member 130 of the upper portion 114 of this way controls the vibration amplitude of scraping edge 174 of scraper blade 110. As previously established, some vibration may be convenient. This can be achieved by varying the design of the upper portion 114 and its connection to the scraping member 170 to allow some pivotal movement of the scraping edge 174. Figures 9 to 14 illustrate another modified embodiment of the scraper blade of the conveyor belt of the present invention. invention generally designated with the reference numeral 210. The scraper blade of conveyor belt 10 is illustrated in Figure 9 mounted on the transverse arrow 12. The scraper blade 210 includes a mounting base 212, a scraping head 214 including a member scraper 216 and a restriction arm member 218 and a support arm member 220. As best illustrated in Figures 9 and 10, the mounting base 212 of the scraper blade 210 includes a lower portion 226 and an upper portion 228 The lower portion 226 includes a generally rectangular opening 230 such that the mounting base 212 is adapted to fit slidably around and in engagement with closed with the rectangular cross shaft 12. The mounting base 212 is removably mounted on the transverse shaft 12 and is selectively slidable on the transverse shaft 12., but can not rotate with respect to the transverse shaft 12 with respect to the longitudinal axis 13. The mounting base 212 extends between a first end 232 and a second end 234. The length of the mounting base 212 between the first and end 232 and 234 may be varied as desired, such that the mounting base 212 may be adapted to mount one or more scraping saws 214 and associated support arm members 220 in the side-by-side recession and the transverse flesha 12. Upper portion 228 of the mounting base 212 comprises a first mounting member that projects a first sanal or groove in the generally T-shape 236 extending from the first end 232 to the second end 234 of the mounting base 212. The first sanal 236 is formed by a pair of spaced-apart and opposite wall portions 238 and a pair of opposing and inwardly extending struts 240 forming a slot 242 therebetween, on an upper surface 244 of the mounting base 212. The upper portion 228 of the mounting base 212 also includes a second mounting member comprising a second sanal or groove in the generally T 250 form. The second sanal 250 is formed by a pair of spaced and opposite side wall porsiones 252 and a pair of struts extending to and opposite 254. A slot 256 is formed between the ribs 254 on a side surface 258 of the upper portion 228 of the mounting base 212. The second channel 250 extends from the first end 232 to the second end 234 of the mounting base 212, in a direction generally parallel to and spaced from the first sanal 236. The lateral surface 258 of the upper portion 228 of the mounting base 212 is spaced inwardly and generally parallel to a lateral surface 260 of the lower portion 226 of the mounting base 212, such that a corner recess is formed in the mounting base 212 adjacent to the second sanal 250. The mounting base 212 is preferably made of an elastomeric material such as urethane, which has a hardness which measures 95 Shore A in durometer or higher, where a number of the upper Shore A durometer indicates a harder material. The same numerical value, is desir 95 in the durometer dial Shore D indicates a material harder than the Shore A slump somparable. The mounting base 212 can also be made from other types of plastics materials that are relatively rigid, from various types of metals, or from other rigid materials. The mounting base 212 can be formed as a part of the transverse flesha 12. The scraping accuracy 214 of the scraper blade 210 is best illustrated in Figures 11 and 12. The scraping member 216 of the scraping saber 214 includes a scraping surface. front 264, extending between a generally linear scraping edge 266 and an opposite trailing edge 268 and extending between a left edge 270 and a right edge 272. The front scraping surface 264 comprises a generally planar portion 273 and a porous surved 274 adjacent the scraping edge 266. The front scraping surface 264 faces the incoming conveyor belt 16, the material is adhered to the sual. The scraping member 216 also includes a generally planar top surface 276 extending between the scraping edge 266 and a trailing edge 278. The scraping edge 266 and the top surface 276 are adapted to slidably engage the surface 14 of the conveyor belt. 16. The scraping member 216 also includes a rear surface 280 that extends downward from the trailing edge 278 of the front surface 276 to a bottom edge 282 and a bottom surface 284 extending from the bottom edge 282 hasia the trailing edge 268 of the front scraping surface 264. The scraping member 216 also includes a surface portion of generally triangular side wall 286 on each side of the scraping member 216 extending between the front scraping surface 264, the upper surface 276 and an edge 288. The triangular side wall surface portions 286 are generally parallel to each other and perpendicular to the scraping edge 266. An angular wall surface portion 290 extends from the edge 288 to an edge. resilient back 292 located on the side of the posterior surface 280. Each portion of the angular wall surface 290 extends at an approximate angle of 30 degrees with respect to its portion of adjacent triangular side wall 286. The scraping member 216 includes a member of mounting in the form of a groove or sanal in the generally T-shape 296. Channel 296 is formed by a pair of spaced-apart and opposite side wall portions 298 and a pair of inwardly extending ribs and opposite 300. Ribs 300 form a groove 302 in the bottom surface 284 of the scraping member 216. The sanal 296 is generally linear and extends generally parallel to the surface. scraping edge 266. Preferential sanal 296 is substantially identical in size and shape in cross section to first sanal 236 of mounting base 212. Scraping member 216 also includes a shank 306 probed to front scraping surface 264. The sling 306 includes a front surface of generally triangular shape 308 as best illustrated in FIG. 12, which extends from a scored scissor in or adjacent to the squeegee edge 266 to a bottom edge 310. A generally restangular bottom surface 312 extends from the bottom edge 310 of the front surface 308 of the sling 306 to the trailing edge 268 of the front squeegee surface 264. A pair of sidewall surfaces of generally triangular shape 314, resiliently extend on all side of the web. arm 306 between the front surface 308, the front scraping surface 264 and the bottom surface 312. The shoulder 306 includes a pair of pores. recessed ions 316 which assist in directing the flow of material that has been removed from the conveyor belt 16. The front scraping surface 264 is arranged at an acute angle respec- ted to the upper surface 276 at the scraping edge 266. The scraping surface front 264 is designed to be soldered at an obtuse angle to the surface 14 of the conveyor belt 16. The scraping member 216 can be made of various materials as desired. A preferred material is an elastomeric material such as urethane, which has a durometer value with Shore A 95 or higher. The scraping member 216 may, if desired, include a metal scraping element or a non-metal scraping element which comprises a hard wear material such as will be on the scraping edge 266. The scraping member 216 may be formed completely or part are a low frission material that has a sliding frission soefisiente equal to or less than 0.7 are rubber and preferensia equal to or less 0.6 sori rubber. The low friction material may be provided in the form of an integrally molded insert or are meshanisably subject to the scraping member 216. When the scraping member 216 enstrates high temperatures during service, the scraping member 216 may be formed from a resistive material. to the salor, such as a metal or material, which is suitable for operating under high service temperatures. The restriction arm member 218 extends between the scraping member 216 and the mounting base 212. As best illustrated in Figures 11 and 12, the restriction arm member 218 extends between a first end 320 and a second. end 322. Restrictor member 218 includes a generally triangular parallelepiped base 324 at first end 320 of restricting arm member 218 extending between a left end 326 and a resilient end 328. The base 324 ansho between the left end 326 and the restraining end 328 is substantially equal to the length of the scraping edge 266. The restraining arm member 218 also includes an artisulatory member 329 in the form of a weft 330 extending from the base 324 to the second end 322 restraining arm member 218. The weft 330 includes a front surface 332 and a rear surface 334 that is substantially evenly spaced from the front surface 332. the weft 330 extends between a left edge 336 and a right edge 338. As illustrated in Figure 11, the weft 330 is relatively thin between the front and rear surfaces 332 and 334 relative to the length of the weft 330 between the base 324 and the second end 322 of the restraint arm member 218. As illustrated in Figure 9, the weft 330 is slightly slanted within a horizontal axis such that the front surface 332 is surmounted in a spaced-out manner and the posterior surface 334 is spaced out servo. The second end 322 of the restriction arm member 218 is illustrated integrally connected to the rib 306 of the scraping member 216 adjacent the bottom edge 310 of the front surface 308 of the rib 306. Although the second end 322 of the arm member 306 Restraint 218 is illustrated as being integrally fitted to scraping member 216, second end 322 can be removably connected to scraping member 216 if desired, using a selesive interlocking connection such as is formed by mounting member 340 and second sanal 250. The second end 322 of the restriction arm member 218 is spaced from the sanal 296 of the scraping member 216. The first end 320 of the restriction arm member 218 includes a mounting member in the generally T 340 shape that is projected to the base 324. The mounting member 340 extends from the left end 326 to the resilient end 328 of the base 324 and is generally parallel to the base 324. scraping edge 266. The mounting member 340 includes a rod 342 which is flanged to the base 324 and a flange 344 is grounded to the end of the rod 342. The T-shaped mounting member 340 is adapted to fit in the second sanal in T-shape 250 of the mounting base 212, to form a selesive intercontacting connection between the restriction arm member 218 and the mounting base 212. The mounting member 340 can slide on a longitudinal axis 345 are respects the second sanal 250, to selectively or selectively remove the restraining arm member 218 from the mounting base 212. While the mounting member 340 and the second sanal 250 provide a sequestrably releasable mounting interlock hardening between the restraining arm member 218. and mounting base 212, the mounting structure resists detachment of restricting arm member 218 from mounting base 212 in response to rear forces. This can be applied to the restriction arm member 218 by the scraping member 216 and the mounting base 212. If desired, a generally parallelopiped restorative backing plate 346 such as a rigid plastis metallum plate can be made to be one side of the base 324, such that the base 324 is sandwiched between the backing plate 346 and the mounting base 212. A fastener 348 such as a bolt, pin or similar fastening device, can be inserted through the backing plate 346 through the base 324 of the restriction arm member 218, and to the mounting base 212, to prevent longitudinal movement between the base 324 of the restriction arm member 218 and the mounting base 212. fastener 348 is removably selectors such that restraining arm member 218 can slide longitudinally and be withdrawn selectors from and mounted to mounting base 212. One or more s bras 348 may be employed to prevent linear sliding movement of the base 324 are or without the backing plate 346. The support arm member 220 of the scraper blade 210 as illustrated in Figures 13 and 14, includes a first end 352, a second end 354, and an artisulatory member 355 in the form of a frame 356 extending between the first and second ends 352 and 354. The frame 356 extends between a left end 358 and a right end 360 and includes a first surface. 362 and a second superframe 364 that are spaced apart in substantially uniform fashion from the first surface 362. As illustrated in Figure 13, the frame 356 of the support arm member 220 is thicker between the first and second superframes 362 and 364 respects the length of the frame 356 in spacing are the frame 330 of the restriction arm member 218. As illustrated in FIG. Figure 13, the web 356 includes a non-planar segment 366 that is generally sent sentral between the first and second ends 352 and 354 of the support arm member 220. The non-planar segment 366 is configured in the form of a cyclic arc respects to a generally horizontal ejf, such that the frame 356 is not linear between the first and second ends 352 and 354 the support arm member 220. The non-planar segment 366 of the frame 356 may be formed in several different ways as desired, such that the non-planar segment 366 and the frame 356 comprise a spring member-which is resiliently collapsible when flexing respect to an axis 367 in response to a pressure force applied to the spring. and second ends 352 and 354 of the support arm member 220. As illustrated in FIG. 9, the non-planar segment 366 is Curved or bent generally inwardly and convexly to the resilient arm end 218. However, the The non-planar segment 366 may be reversed in an alternating manner so as to survate or buckle up and away from the restriction arm member 218. The support arm member 220 includes a first mounting member generally in the form of T 318 in the first end 352 of the support arm member 220. The first mounting member 368 includes a flange 370 conesat the lower end of the frame 356. The support arm member 220 also includes a second T-shaped mounting member 372 located at the second end 354 of the support arm member 220. The second mounting member 372 includes a flange 374 cones at an upper end of the frame 356. The mounting members 368 and 27 2 of preferensia are substantially identical to each other in shape and size. The T-shaped mounting member 368 of the support arm member 220 is adapted to fit within the first T-shaped sanal 236 of the mounting base 212, to form a selective inter-sealing connection between the support arm member 220. and the mounting base 212. The selective interconnection connection formed by the first mounting member 368 and the first channel 236 allow a selective sliding movement of the support arm member 220 on a longitudinal axis 375 are relative to the mounting base 212. The selesional interengagement connection formed by the mounting member 368 and the first sanal 236 prevents detachment of the support arm member 220 from the mounting base 212 when the frame 356 is subjected to either transverse or compression forces by the head. scraper 216 and mounting base 212. As best illustrated in Figure 9, one or more fasteners 376 may be removably inserted into mounting base 212 and through the lower end of the frame 356, to selectively prevent sliding movement of the support arm member 220 from the mounting base 212. The second mounting member 372 of the support arm member 220 is adapted to fit within and provide a selective interlock connection with the channel 296 of the scraping member 216. The selective interlock connection formed between the second mounting member 372 and the channel 296, allows the support arm member 220 to slide selesively within the sanal 296 on a longitudinal axis 377 with respect to scraping member 216. However, the selesional interengagement connection formed by mounting member 372 and sanal 296, prevents release of support arm member 220 from scraping member 216 when frame 356 it is subjected to its any force of transssion or compression by the mounting base 212 and the scraping head 216. If desired, nails or more fasteners 378 can be removably inserted into the scraping member 216 and through the upper end of the frame 356 to selesively prevent the support arm member 220 from sliding relative to the scraping member 216. The scraping blade 210 has disclosed here that it includes sanal fitting members generally in the form of T 236, 250, and 296 and mounting members in the form of generally T 340, 368 and 372 which are adapted to resistively interspile to each other to provide selectively releasable connections between the support arm member 220 and the mounting base 212, between the support arm member 220 and the scraping member 216 and between the restriction arm member 218 and the mounting base 212. Each of these connecting means somprende A T-shaped sanal and an inter-implant T-shaped mounting member can be replaced by other sonar means that provide a selective releasable connection between two members These alternate connector means may include solid fasteners such as screws, bolts, fasteners and plates that are inserted into and / or through the members to be connected together and a wide variety of additional connection mechanisms suitable to provide a selectively releasable connection. The channels 236, 250 and 296 and the mounting members 340, 368, 372 can be configured in different T-shaped forms, such as a L-shape, V-shape and U-shape and other shapes. The support arm member 220 is substantially non-linear between the first and second ends 352 and 354 of the support arm member 220, such that the support arm member is resiliently and resiliently collapsible respects the axis 367 in response to an operasional scraping force aplimated to the scraping edge 266 by the conveyor belt 16. The support arm member 220 is flexibly collapsible from a first position as illustrated in Figure 9, where the scraping force is sero The first and second ends of the support arm member 220 are spaced apart from each other a first linear distance, to a second position when a scraping force is applied to the scraping edge 266 such that the second end 354 of the extension member support arm 220 s moves more sersa to first end 352 and first and second ends 352 and 354 are spaced at a second linear distance that is more sorta than the first linear stansia. The support arm member 220 collapses on flexing or bending respect to the axis 367 as opposed to undergoing an elastic or rigid shortening of the support arm member 220. The restriction arm member 218 is substantially inelastic so that the restraining arm member 218 substantially resists elongation or physical stretching between first and second ends 320 and 322 of restricting arm member 218 during flexible crushing of support arm member 220 from the first position to the second position. Restrictor arm member 218 is substantially inelastic although it may be subjected to a relatively small sag in physical length. Once the support arm member 220 has been crushed to a position where it can not be squashed or flexed further to the axis 367, the restricting arm member 318 can then be subjected to a substantial physical elongation due to a large force of scraping that is applied to the scraping edge 266. The preferensia restraining arm member 218 is formed from a material having a higher elastomeric modulus than the material forming the supporting arm member 220, such that the restriction arm member 218 is more ineligible or sambio-resistant in length for a given length and cross-sectional area of a restriction arm member 218, in response to a certain force of pressure or transssion, this is the support member 220 for the same length, area in transverse session and force. Restrictor arm member 218 and support arm member 220 are both preferably made from an elastomeric material such as urethane. The preferensia restraining arm member 218 is made from urethane having a durometer of 95 on Shore A or higher. The preferensia support arm member 220 is made from a urethane having a lower durometer value than the restriction arm member 218 such as a durometer 80 and 90 Shore A. Restrictor arm member 218 is manufactured from a material having a relatively high elastomer modulus or high hardness durometer, such that the restraining arm member 218 is substantially inelastic (substantially resistant to sambium in length) and will be subjected to such tension or samba in physical length is possible as a result of the transfer forces that are aplimated to the restriction arm member 218 by the scraping member 216 and the mounting base 212 during normal operation of the scraper blade 210. However, the frame 330 of the scraper member 218 The restriction arm 218 must remain sufficiently flexible, so that the frame 330 can be flexibly crushed on itself, when the frame 330 s and subjecting a compression force of a predetermined amount to the scraping member 216 and the mounting base 212, such that when the conveyor belt reverses its normal resorption direction, to avoid damage to the scraper blade 210, the mesanism of cleaning of the conveyor belt and conveyor belt 16. As illustrated in Figure 9, the frame 330 of the restriction arm member 218 surges between the base 324 and the first end 320 of the restriction arm member 218. When the frame 330 is subjected to a transference force, the weft 330 will generally become planar, such that the second end 322 will become further away from the base 324. This sambio at the distance between the base 324 and the second end 322 of the member. of restriction arm 218 is due to a sambio in the geometric sonfiguration of the frame 330 and differs and does not correspond to an elastic change in the physical length of the frame 330. The physical length of the tr ama 330 is measured on its center line and not as the linear distance between the respective ends of the frame 330.

The link member 329 of the constraining arm member 218 may be formed differently from a weft 330 of elastomer material having a relatively high modulus of elasticity or hardness, while still being substantially inelastic and suffi ciently flexible to be crushed under compressive forces . Link member 329 may display an elaborate array of metal, plastis or other materials, one or more swords or filaments made of metal, plastic or other materials, or an elaborate mesh of metal, plastics or other materials. The link member 329 may also comprise a web formed of metal material. The link member 355 of the support arm member 220 can also be formed of different materials and in different configurations from the web 356 of elastomeric material illustrated in Figure 9. The artisulatory member 355 can be formed as a metallic web. The artisulatory member 355 can also be formed as a helioidal spring formed from metal, plastis or other materials. In this way, the restriction arm member 218 can be formed as an elastomeric web and the support arm member 220 can be formed as a metaloid helisoidal spring such that the support arm member 220 is formed of a material having a module. Higher elastitic material than the material of the restricting arm member 218. In operation, the scraping edge 266 and the upper surface 276 of the scraping member 216 are pressed in scraping asphalting are the surface 14 of the conveyor belt 16. According to the strip 16 drags across the scraping edge 266, a scraping force will be applied to the scraping edge 266 by the conveyor belt 16. The scraping member 216 and the restricting arm member 218 will resiliently pivot respect to a pivot shaft 380 which extends transversely through the lower end of the frame 330 of the constraining arm member 218, and which is preferably made in the surface The front 332 of the frame 330 is illustrated in FIG. 9. It is preferable to have the pivot shaft 380 stamped as serranoably as possible to the front surface 332 of the restriction arm member 218, to eliminate vibrations that can otherwise be overcome by sucking high drag forces between the band 16 and the scraping member 216 are encountered. Making the restraining arm member 218 substantially physically resistant to elongation or tension moves the pivot axis 380 to the frontal surface 332 as opposed to a radially stressed location is illustrated by the axis 80 in Figure 1 which results in the member sucking. Restriction arm is more susseptible to tension or elongation. The scraping edge 266 removes adhesive material from the surface 14 of the conveyor belt 16. The adherent material is removed, then runs over the front scraping surface 264 and is dislodged at the trailing edge 268 of the front scraping surface 264. The portion The planar surface of the scraping surface 264 is located at an approximate angle of 33 degrees with respect to the upper surface 236. Material that is removed from the conveyor belt 16 therefore changes its resorption direction by approximately 33 degrees. resorbed on the web 16 at its resorptive direction on the front scraping surface 264. The small sambium at the angle of resorption of the removed material that is provided by the scraping member 216, results in a relatively small force that is aplied to the member of scraping 216 by the adherent material that is blown by the front scraping surface 264. This force tries to separate the scraper member 216 from the conveyor belt 16. A small or reductive separating force is provided by the scraping member 216, thus improving the cleaning operations.

The restraining arm member 218 in co-biasion is the brace 306, operates to restrain and substantially prevent movement of the scraping edge 266 in a direction away from the base 322 of the restriction arm member 218 and from the mounting base 212. The restriction arm member 218 in this manner controls the amplitude of vibration of scraper blade 210. However, as previously stabilized, some vibration can be achieved. During normal cleaning operations, the restriction arm member 218 is subjected to transfer forces by the scraping member 216 and the mounting base 212. However, in the event that the rotation direction of the conveyor belt is reversed, the restriction arm member 218 will be subjected to pressure forces. The frame 330 of the restriction arm member 218 is designed to resiliently crush upon the application of a predetermined compression force, by sucking the conveyor belt 16 reverses its rotational direction to avoid damage to the scraper blade 210, the transverse blade 12 and the band conveyor 16. During normal cleaning operations, the support arm member 220 is subjected to pressure forces between the scraping member 216 and the mounting base 212 that are generated by the scraping force that is applied to the scraping edge 266 When a scraping force is applied to the scraping edge 266, the support arm member 220 will move from its first position as illustrated in Figure 9, where the scraping force is sero and the support arm member 220 is unstressed, to a second position, where the support arm member 220 has flexed respect to the axis 367, while the restriction arm member 218 is bstancialmente resists any physical elongation. The support arm member 220 must be able to withstand sufficient compression loads in order to press the scraping member 216 against the conveyor belt 16, they are the desired strength sanctity, however per anese sufficiently flexible and resilient to allow a range of movement due to a sambium in the distance between the first end 352 and the second end 354 of the support arm member 220 to accommodate various scraping forces and in that the scraping member engages an object in the band 16 which does not it is separated from the web, such as a splice of the web or material that can be frozen in the web, to avoid damage to the scraper blade 210. The thickness of the web 366 between its first web 362 and the second web 364, and the web of the frame 356 between its left end 358 and the right end 360, can be varied as desired to provide the desired structural properties and performance sapphires to the bridging member. In addition, the support arm member 220 can be made of materials having different durometer values, different elastomeric modules and different sonfigurations, so as to also provide the required structural properties and operating characteristics to the supporting arm member. 220. The support arm member 220 is removable and replaceable from the mounting base 212 and the scraping head 214, such that a support arm member 220 can be replaced with a second support arm member 220 having a shape or area in different cross-section or that is made from a different material having a different elastomer or hardness modulus for varying the operational sarasteristises of the scraper blade 210, without having to replace the mounting base 212 or the know-how of scraping 214 of the scraper blade 210. In this way, the operator can selession an arm member 220 from a of members in existence, each having a different operating experience. The support arm members 220 can be replaced until one that produces optimum results is installed. In addition, when the scraping member 216 has been worn out by the use, the abraded scraping member 216 can be removed from the support arm 220 and the mounting base 212 and replaced with a new scraping member 216. Figure 15 illustrates a modified embodiment of the conveyor belt scraper 210 illustrated in Figures 9. at 14 and is generally designated with the reference number 390. The scraper blade 390 includes a mounting base 392 which is constructed substantially similar to the mounting base 212. The mounting base 392 comprises a first mounting member which comprises a channel or generally T-shaped groove 394. The scraper blade 390 also includes a scraping head 396 that is constructed substantially similar to the scraping head 214. The scraping head 396 includes a scraping member 398 and an arm member. restriction 400. The scraping member 398 includes a mounting member that projects a groove or sanal in the generally T 402 shape. The scraper blade 390 also includes a mounting member. support azo 404. The support arm member 404 extends between a first end 406 and a second end 408. The support arm member 404 includes a first mounting member in the generally T 410 shape at the first end 406, which is adapted to be blown within the sanal 394 to form a selective interengaging connection between the support arm member 404 and the mounting base 392. The support arm member 404 also includes a second mounting member in the generally T 412 form at the second end 408 which is adapted to fit within the sanal 402, to form a selessive intercontacting connection between the support arm member 404 and the scraper member 398. An artisulatory member in the form of a helioidal coil spring 414 has a first end 416 connected to the first mounting member 410 and a second end 418 conested to the second mounting member 412. The helioidal spring 414 can be formed from meta l, plastis or other materials. The helioidal spring 414 is helically wound relative to a sentral longitudinal axis that extends linearly between the mounting members 410 and 412. The support arm member 404 is resiliently collapsible in response to an operasional scraping force that is applied to the mounting member. Scraped 398 by the conveyor belt. The support arm member 404 is flexibly collapsible from a first position as illustrated in Figure 15, wherein the scraping force is serous in magnitude and wherein the first and second ends 406 and 408 of the support arm member 404 they are spaced apart from a first linear distance, there is a second position where a scraping force is applied to the scraping member 398, such that the second end 408 of the support arm member 404, moves more sersa to the first end 406 and the first and second ends 406 and 408 are spaced a second linear distance that is more sorta than the first linear distance. Although the coil spring 414 collapses in a generally linear direction and is coupled as measured in a linear direction between its ends 416 and 418, the helioidal spring is associated by bending or flexing of the coils which the helioidal spring protrudes as opposed to a The protrusion of the length of the helioidal spring is measured in a helioidal direction on the sentral line of the coils. The restriction arm member 400 is substantially inelastic so that the restriction arm member 400 substantially resists elongation or physical stretching during flexible crushing of the support arm member 404 from the first position to the second position. Figures 16 and 17 illustrate a modifiable scraping pattern 430, which is usable in connection are the mounting base 212 illustrated in Figure 10. Scraping saber 430 includes scraping member 432 and a plurality of members of restricting arm 434. The scraping member 432 is constructed substantially similar to the scraping member 216. The scraping member 432 comprises a front surface 436 having a scraping edge 438 as shown in Figure 16 and a rear surface 440 This is illustrated in FIG. 17. Restrictor arm members 434 are constructed substantially similar to restricting arm member 218. Each restriction arm member 434 extends between a first end 442 and a second end 444. Each member of the restraining arm 434 is a member. restraining arm 434 includes a base 446 at the first end 442 that is constructed substantially similar to the base 324 as shown in Figures 11 and 12. Each restraining arm member 434 includes an artisulatory or link member in the form of a plot 448, which extends from the base 446 to the second end 442 of the restriction arm member 434. As illustrated in Figure 17, two support arm members 452 are conested to the scraping member 432. Additional support arm members 452 the scraping member 432 may be formed, if desired. The support arm members 452 may be substantially substantially similar to the support arm member 220 illustrated in FIG. 9 or the support arm member 404 illustrated in FIG. 15. The support arm members 452 and the support member members 452 are provided in a manner similar to that shown in FIG. restraining arm 432, are adapted to be mounted to the mounting base 212 illustrated in Figure 10. A scraper blade * that includes scraping blade 430 are a plurality of restricting arm members 434 and a plurality of blade arm members. support 452, operates substantially in the same way as the scraper blade 210. Various embodiments of the invention have been illustrated and partially scattered in connection are the illustrated embodiments of the invention, however, it will be understood, that these partisinal assemblies simply illustrate, and that the invention will be given all its widest interpretation within the terms of the annexed vindications.

Claims (44)

1. CLAIMS 1.- A conveyor belt scraper, adapted for use in cleaning the surface of a conveyor belt, the scraper is characterized in that it includes: a first arm member having a first end and a second end, a scraper member having a first surface defining a scraping edge, the scraping member is flanked to the second end of the first arm member; a second arm member having a first end and a second end, the second end of the second arm member being springing seletively to the scraper member; and first connecting means for selecting the second end of the second arm member with the scraper member; whereby the second arm member is selectively removable from and conestable to the scraping member.
2. 2. The scraper of the conveyor belt are the claim 1, characterized in that the first connection means comprise a first channel formed in the scraping member and a first mounting flange formed in the second end of the second arm member, the The first mounting flange is adapted to be removably retained in the first channel.
3. 3. The scraper of the conveyor belt are the claim 2, characterized in that the first sanal is generally T-shaped, and the first mounting flange is generally T-shaped and generally adapts to the T-shape of the first sanal, in such a way that the first mounting flange slides selesively within the first sanal.
4. 4. The scraper of the conveyor belt are the sag 2, sarasterized because it includes a mounting base and second connection means to sonestar selestivamente the second arm member are the mounting base.
5. 5. The scraper of the conveyor belt of the deformation are the claim 4, characterized in that the second connection means comprise a second sanal formed in the mounting base and a second mounting flange formed in the first end of the second arm member, the second mounting flange is adapted to be removably retained in the second channel.
6. 6. The scraper of the conveyor belt are the claim 5, sarasterized because the first sanal is generally T-shaped, and the first mounting flange is generally I-shaped, the first mounting flange in the form of T is generally adapts to the T shape of the first sanal, in such a way that the first mounting flange slides selesively within the first sanal, and where the second sanal in general has a T shape and the second mounting flange is generally T-shaped , the second T-shaped mounting flange is generally adapted to the T shape of the second sanal, such that the second mounting flange is selectively slidable within the second channel.
7. 7. The scraper of the conveyor belt with the deformation 5, sarasterized because the first mounting flange has a first configuration in transverse session and the second mounting flange has a second configuration in transverse session, the first and second sections in section They are substantially identical to one another in such a way that the first mounting flange can be operatively inserted into one of the first sanal or the second sanal as desired.
8. 8. The scraper of conveyor belt of sonformity is the reivindisasión 5, sarasterizado because the first sanal is substantially parallel to the second sanal.
9. 9. The conveyor belt scraper according to claim 1, characterized in that the second arm member includes a segmented Planar segment Ho between the first and second ends of the second arm member.
10. 10. - The conveyor belt scraper according to claim 9, characterized in that the non-planar segment is non-linear between the first end and the second end of the second arm member.
11. 11. The scraper of the conveyor belt of soundness are the claim 5, sarasterized because a half connection terser for selectors to be included in the first end of the first arm member is the mounting base.
12. 12. The scraper of the conveyor belt are the claim 11, sarasterized because the third connection means comprise a third sanal formed in the mounting base and a mounting flange terser formed on the first end of the first arm member, the terser mounting flange is adapted to be retained removably in the sanal terser.
13. 13. The scraper of the conveyor belt are the claim 1, characterized in that the second end of the first arm is integrally concatenated to the scraping member.
14. 14. The scraper of the conveyor belt is the claim 1, sarasterized because the first arm member is formed urt material having a hardness first durometer value and the second arm member is a material that has a second hardness durometer value, the first hardness durometer value is higher than the second hardness durometer value.
15. 15. The conveyor belt scraper according to claim 1, sarasterized in that the first arm member is formed of an elastomer material having a durometer of at least about 95 Shore A, and the second arm member being formed is a elastomeric material having a durometer that is less than about 95 Shore A.
16. 16. The scraper of the conveyor belt is the claim 1, characterized in that the scraping member includes a second surface extending from the scraping edge, the The first surface is arranged at an acute angle respecting the second surface on the scraping edge.
17. 17. A conveyor belt scraper, adapted for use in cleaning the surface of a conveyor belt, the scraper is characterized in that it includes: a scraping member having a scraping surface defining a scraping edge; a first arm member having a first end and a second end, the second end is contoured to the scraping member, a first arm member is formed with a material having a first elastice module; and a second arm member having a first end and a second end, the second end is flanged to the scraping member, the second arm member is formed is a material having a second elastisity module, the second elastomer module is smaller than the first elastity module.
18. 18. The conveyor belt scraper according to claim 17 is sarasterized because the first arm member is formed of an elastomer material having a hardness first durometer value and the second arm member is formed of an elastomer material that has a second hardness durometer value, the second hardness durometer value is lower than the hardness durometer first value.
19. 19. The conveyor belt scraper according to claim 17 is sarasterized because the first arm member is formed by an elastomer material having a durometer of at least 95 Shore A and the second arm member is formed by an elastomer material having a durometer of less than about 95 Shore A.
20. 20. The conveyor belt scraper in accordance with claim 17 is sarasterized because it includes a mounting base, the first end of the first arm member is flanged to the mounting base and the The first end of the second arm member is conestablished to the mounting base.
21. 21. A support arm member for use in symbiosis with a conveyor scraper having a scraping member provided to a mounting base by a restriction arm member, the support arm member includes: link extending between a first end and a second end; first connecting means at the first end of the artisulatory member for sequentially testing the first end of the artisulatory member with the mounting base; and second connection means at the second end of the artisulatory member for selectively sonecting the second end of the articulatory member are the scraping member; are what the support arm member is adapted to serve as the scraping member are the mounting base in which they are the restriction arm member.
22. 22. The member of the support arm of sonicity is claim 21, characterized in that the first connecting means comprise a mounting member in a generally T-shape.
23. 23.- The member of the support arm of sonicity is claim 21. , sarasterized because the second connection means comprise a mounting member generally in the form of a T.
24. 24. - The support arm member according to claim 21, sarasterized in that the artisulary or link member includes a generally non-planar segment located between the first end and the second end of the link member.
25. 25. A scraping head for use with a conveyor belt scraper including a mounting base having a first mounting member and a first arm member having a first end and a second end, the first end of the first member of arm is connected to the mounting base, the second end of the first arm member includes a second mounting member, the scraping head includes: a scraping member having a first surface defining a scraping edge; a first connection means, to sesectively the second mounting member of the first arm member to the scraping member; and a second connection means for selectors to selectively form the first mounting member of the base member to the scraping member.
26. 26.- The soundness of shaving is the reivíndisation 25, sarasterized because it includes a second arm member having a first end and a second end, the first end of the second arm member includes the second connection means, the second end of the second arm member is scored to the scraping member.
27. 27. The know-how of scraping of the sonformity is the vindication 26, sarasterized because the first means of connection create a sanal formed in the scraping member adapted to support the second mounting member of the first arm member.
28. 28.- The masking accuracy of the sonformity is the vindication 25, sarasterized because the second connection means comprise a mounting flange that is stamped to the scraping member, the mounting flange is adapted to be connected to the first mounting member of the mounting base .
29. 29. The scraping head according to claim 25, characterized in that the second connection means comprise a second arm member having a first end and a second end, the first end includes a mounting member for sounding the second member. of arm to the first mounting member of the mounting base and the second end of the second arm member is flanged to the scraping member.
30. 30.- The knownness of shaving of the sonformity is the vindication 25, characterized in that the scraping member includes a second surface, the first surface forming an acute angle are the second surface on the scraping edge.
31. 31.- A conveyor belt scraper adapted for use in cleaning the surface of a conveyor belt, the scraper is sarasterized because it includes: a scraping member having a first surface and defining a scraping edge; a collapsible support member having a first end and a second end, the second end of the support member is flanged to the scraping member, the support member is resiliently and flexibly collapsible from a first position to a second position, in response to a scraping force of operasional magnitude that is aplimated to the scraping edge, the support member is scored in the first position with the scraping force being zero, wherein the first end and the second end of the support member are spaced apart from each other a first linear distance, the support member is movable towards the second position, when the scraping force is applied to the scraping edge, wherein the first end and the second end of the support member are spaced apart from each other a second linear distance, the second linear distance is shorter than the first linear distance; and a restriction member having a first end and a second end, the second end of the restriction member is flanged to the scraping edge, the restriction member being substantially inelastic, such that the restriction member substantially resists physical elongation between the first and second ends of the restraining member during flexible crushing of the support member from the first position to the second position.
32. 32.- The scraper of conveyor belt of sonformidad are the reivindisasión 31, sarasterized because the support member is substantially non-linear between the first end and the second end of the support member.
33. 33.- The scraper conveyor belt of sonformity are the reivindisasión 31, sarasterizado because the support member includes a member of link latched between the first end and the second end of the support member.
34. 34. The scraper conveyor belt of sonicity are claim 33, sarasterized because the link member comprises a resilient spring member.
35. 35.- The conveyor belt scraper according to claim 34, sarasterized because the spring member protrudes a helisoidal spring.
36. 36. - The scraper conveyor belt of the sonformity are the reivindisasión 34, sarasterizado because the spring member is formed of an elastomer material.
37. 37. The scraper belt conveyor with the claim 34, sarasterized because the spring member is formed of a metal material.
38. 38. The conveyor belt scraper according to claim 33, sarasterized because the articulation member comprises a frame.
39. 39. The conveyor belt scraper according to claim 33, sarasterized because the frame includes a curved segment.
40. 40. The conveyor belt scraper of conformity is claim 31, characterized in that the restriction member includes an articulated link member or link between the first and second ends of the restriction member, the artisulatory member is resiliently collapsible.
41. 41. The conveyor belt scraper in accordance with claim 31, is sarasterized because the second end of the restriction member is coned to the first surface of the scraping member.
42. 42. The conforming conveyor scraper is claim 31, characterized in that a plurality of support members are made to the scraping member.
43. 43. The scraper of the conveyor belt of conformity is claim 31, characterized in that it includes a plurality of restriction members connected to the rasping member. *
44. 44.- The conveyor belt scraper according to claim 31, scraping includes a second surface extending from the scraping edge, the first surface being arranged at an acute angle with respect to the second surface at the scraping edge.