CN218760591U - Blade - Google Patents
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- CN218760591U CN218760591U CN202222415789.XU CN202222415789U CN218760591U CN 218760591 U CN218760591 U CN 218760591U CN 202222415789 U CN202222415789 U CN 202222415789U CN 218760591 U CN218760591 U CN 218760591U
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Abstract
The utility model relates to a blade, which comprises a blade body, wherein the blade body is a strip-shaped section bar piece; a cavity is formed in the cross section of the blade body, a reinforcing rib is arranged in the cavity, and two ends of the reinforcing rib are respectively connected with the upper cavity wall and the lower cavity wall of the cavity, so that the cavity is divided into a first cavity and a second cavity through the reinforcing rib, and a positioning groove is formed in the front side surface of the reinforcing rib; a first convex rib and a second convex rib are formed on the upper cavity wall of the first cavity, the bottom surface of the first convex rib is coplanar with the bottom surface of the second convex rib, the common surface is called a first clamping surface, and the upper groove wall surface of the positioning groove is coplanar with or higher than the first clamping surface; a third convex rib and a fourth convex rib are formed on the lower cavity wall of the first cavity, the top surface of the third convex rib, the top surface of the fourth convex rib and the lower groove wall surface of the positioning groove are coplanar, the surfaces are called as second clamping and pressing surfaces, and a clamping and pressing gap for clamping and pressing the leaf stalks is formed between the second clamping and pressing surfaces and the first clamping and pressing surfaces.
Description
Technical Field
The utility model relates to a technical field of ceiling fan especially relates to a blade.
Background
The ceiling fan is a common ventilation device, and the ceiling fan drives a blade handle to do circular motion through a motor rotor, so as to drive blades connected with the blade handle to do circular motion, thereby generating downward airflow to realize the ventilation effect. The blades of the existing ceiling fan are hollow strip-shaped section pieces, blade shanks are inserted into inner cavities of the blades during assembly, and the blades and the blade shanks are fixed through bolts, so that the upper surface and the lower surface of the blade shanks are correspondingly attached to the upper cavity wall and the lower cavity wall of the inner cavities of the blades one by one, the blade shanks need to have enough thickness to be matched with the heights of the inner cavities of the blades, the weight of the blade shanks is heavy, the load of a motor is large, and the working efficiency is reduced; in addition, the existing blade is only provided with a single inner cavity, the structural strength is low, and the front and back directions of the blade handle cannot be positioned, so that the positioning is difficult when bolts for connecting the blade and the blade handle are penetrated, and the assembly efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a blade has the petiole that is applicable to thickness thinner, structural strength is higher, the equipment effect is higher advantage etc.
The utility model provides a technical scheme that its technical problem adopted is: a blade comprises a blade body, wherein the blade body is a strip-shaped section, the length direction of the blade body is the left-right direction, the width direction of the blade body is the front-back direction, and the thickness direction of the blade body is the up-down direction;
a cavity is formed in the cross section of the blade body, a reinforcing rib is arranged in the cavity, the top end of the reinforcing rib is connected with the upper cavity wall of the cavity, and the bottom end of the reinforcing rib is connected with the lower cavity wall of the cavity, so that the cavity is divided into a first cavity and a second cavity through the reinforcing rib, the first cavity and the second cavity are sequentially arranged in the front-back direction, and a positioning groove is formed in the front side surface of the reinforcing rib;
a first convex rib and a second convex rib are formed on the upper cavity wall of the first cavity along the front-back direction, the bottom surface of the first convex rib is coplanar with the bottom surface of the second convex rib, the common surface is called a first clamping surface, and the upper groove wall surface of the positioning groove is coplanar with or higher than the first clamping surface; a third convex rib and a fourth convex rib are formed on the lower cavity wall of the first cavity along the front-back direction, the top surface of the third convex rib, the top surface of the fourth convex rib and the lower groove wall surface of the positioning groove are coplanar, the total surface is called a second clamping and pressing surface, and a clamping and pressing gap for clamping and pressing the leaf stalks is formed between the second clamping and pressing surface and the first clamping and pressing surface.
The utility model discloses a theory of operation:
the utility model is applied to a ceiling fan, when the utility model is installed, the first cavity of the blade body is sleeved on the blade handle of the ceiling fan, so that the blade handle is clamped in the clamping gap, and the rear side surface of the blade handle is arranged on the top of the groove bottom of the positioning groove; because the blade handle is clamped in the clamping gap, a certain distance exists between the upper surface of the blade handle and the upper cavity wall of the first cavity and between the lower surface of the blade handle and the lower cavity wall of the first cavity, so that the thickness of the blade handle can be reduced, the weight of the blade handle is reduced, the load of a motor of the ceiling fan is reduced, the blade body is driven by the motor to move, and the working efficiency is improved. In addition, because the reinforcing rib is arranged in the cavity of the blade body, the top end of the reinforcing rib is connected with the upper cavity wall of the cavity, and the bottom end of the reinforcing rib is connected with the lower cavity wall of the cavity, the blade body is higher in structure, and the service life of the blade is prolonged. Simultaneously, because the top surface of third protruding muscle, the top surface of fourth protruding muscle and the lower groove wall of constant head tank constitute the second and press the face, when the equipment, the angular position that second press the face and the tank bottom surface of constant head tank constitute is the angular position counterpoint of the petiole of rectangle with the cross section, conveniently wears to put the bolt of fixing blade body and petiole together, has improved the packaging efficiency greatly.
Further, according to the blade, the height of the first rib is D1, the height of the second rib is D2, the height of the third rib is D3, the height of the fourth rib is D4, the ratio of the height D3 to the height D1 is in the range of 1:2-1:3, and the ratio of the height D4 to the height D2 is in the range of 1:2-1:3.
Further, in the vane as described above, an upper groove is formed between the first rib and the second rib, and a lower groove is formed between the third rib and the fourth rib; be formed with a plurality of mounting holes and a plurality of mounting hole down on the blade body, a plurality of mounting holes, a plurality of mounting hole down all lay along the left right direction, and a plurality of mounting holes, a plurality of mounting hole all are close to the one end setting of blade body down, and each is gone up the upper surface and the upper groove that the mounting hole all communicates the blade body, and each mounting hole all communicates the lower surface and the lower recess of blade body down, and the hole axis of one last mounting hole sets up with the hole axis collineation of mounting hole once.
Further, the blade further comprises a plurality of connecting assemblies for connecting the blade body and the blade shank, each connecting assembly comprises a bolt and a nut, each connecting assembly corresponds to one of the lower mounting hole and the upper mounting hole, one end of the bolt of each connecting assembly penetrates through the lower mounting hole, the blade shank and the upper mounting hole and then is in threaded connection with the nut, the diameter of the bolt head of the bolt is D5, and the diameter of the nut is D6; the distance between the front side surface of the first convex rib and the rear side surface of the second convex rib is D7, and the distance between the front side surface of the third convex rib and the rear side surface of the fourth convex rib is D8; the ratio of the distance D7 to the diameter D5, the ratio of the distance D8 to the diameter D5, the ratio of the distance D7 to the diameter D6 and the ratio of the distance D8 to the diameter D6 are all in the range of 1:1-1.3.
Further, according to the blade described above, the distance between the front side surface of the stiffener and the front end of the blade body is D9, the distance between the rear side surface of the stiffener and the rear end of the blade body is D10, and the ratio of the distance D10 to the distance D9 is in the range of 0.9.
Furthermore, according to the blade, the anti-falling hole is formed in the first cavity close to the front end of the blade body, the axis of the anti-falling hole is arranged along the left-right direction, and the anti-falling hole is used for installing a steel wire rope.
Further, as for the blade, the outer contour of the cross section of the blade body is formed by sequentially enclosing a first arc section, a second arc section, a third arc section, a fourth arc section, a fifth arc section, a sixth arc section, a seventh arc section, an eighth arc section, a ninth arc section and a tenth arc section end to end; the upper edge of the outer contour of the cross section of the blade body is formed by combining a first arc section, a second arc section, a third arc section and a fourth arc section, the circle centers of the first arc section, the second arc section, the third arc section and the fourth arc section are all positioned below the upper edge of the outer contour of the cross section of the blade body, the radius of the first arc section is 50 +/-1 mm, the arc length is 23 +/-1 mm, the radius of the second arc section is 165 +/-1 mm, the arc length is 45 +/-1 mm, the radius of the third arc section is 425 +/-1 mm, the arc length is 34 +/-1 mm, the radius of the fourth arc section is 237 +/-1 mm, and the arc length is 72 +/-1 mm; the lower edge of the outer contour of the cross section of the blade body is formed by combining a sixth arc section, a seventh arc section, an eighth arc section and a ninth arc section, the circle center of the sixth arc section is positioned below the lower edge of the outer contour of the cross section of the blade body, the circle centers of the seventh arc section, the eighth arc section and the ninth arc section are all positioned above the lower edge of the outer contour of the cross section of the blade body, the radius of the sixth arc section is 214 +/-1 mm, the arc length is 67 +/-1 mm, the radius of the seventh arc section is 6931 +/-1 mm, the arc length is 33 +/-1 mm, the radius of the eighth arc section is 530 +/-1 mm, the arc length is 52 +/-1 mm, the radius of the ninth arc section is 62 +/-1 mm, and the arc length is 14 +/-1 mm; the fifth circular arc section is a fillet smoothly connecting the fourth circular arc section and the sixth circular arc section, the radius of the fifth circular arc section is 0.6 +/-0.1 mm, and the arc length is 2 +/-0.5 mm; the tenth arc segment is a fillet smoothly connecting the ninth arc segment and the first arc segment, and has a radius of 5 +/-1 mm and an arc length of 11 +/-1 mm; the first cavity is arranged close to the tenth arc segment, and the second cavity is arranged close to the fifth arc segment.
Further, in a blade as described above, the length D11 of the blade body is 3350 + -100 mm.
Realize the technical scheme of the utility model, following beneficial effect has: the utility model has the advantages of being applicable to the petiole with thinner thickness, higher structural strength, higher assembly effect, etc.
Drawings
FIG. 1 is a perspective view of the embodiment;
FIG. 2 is a left side view of the embodiment;
FIG. 3 is a top view of the embodiment;
FIG. 4 isbase:Sub>A sectional view in the direction A-A of FIG. 3;
FIG. 5 is a schematic view of the embodiment of FIG. 4 after assembly with a petiole;
description of reference numerals:
1-a blade body; 101-a first arc segment; 102-a second arc segment; 103-a third arc segment; 104-a fourth arc segment; 105-a fifth arc segment; 106-sixth arc segment; 107-a seventh arc segment; 108-an eighth arc segment; 109-ninth arc segment; 110-tenth arc segment; 2-a cavity; 3-a first cavity; 31-a first bead; 32-a second bead; 33-third ribs; 34-a fourth rib; 35-nip gap; 36-a positioning groove; 37-upper groove; 38-lower groove; 39-anti-falling holes; 4-a second cavity; 5-reinforcing ribs; 6-mounting holes; 7-lower mounting holes; 8-petiole; 9-a connecting assembly; 91-bolt; 92-nut.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
A vane as shown in fig. 1 to 5 as an embodiment includes a vane body 1, the vane body 1 is an elongated profile, a length direction of the vane body 1 is a left-right direction, a width direction of the vane body 1 is a front-back direction, and a thickness direction of the vane body 1 is a top-bottom direction;
a cavity 2 is formed in the cross section of the blade body 1, a reinforcing rib 5 is arranged in the cavity 2, the top end of the reinforcing rib 5 is connected with the upper cavity wall of the cavity 2, the bottom end of the reinforcing rib 5 is connected with the lower cavity wall of the cavity 2, so that the cavity 2 is divided into a first cavity 3 and a second cavity 4 through the reinforcing rib 5, the first cavity 3 and the second cavity 4 are sequentially arranged in the front-back direction, and a positioning groove 36 is formed in the front side surface of the reinforcing rib 5;
a first convex rib 31 and a second convex rib 32 are formed on the upper cavity wall of the first cavity 3 along the front-back direction, the bottom surface of the first convex rib 31 is coplanar with the bottom surface of the second convex rib 32, the common surface is called a first clamping surface, the upper groove wall surface of the positioning groove 36 is coplanar with the first clamping surface or higher than the first clamping surface, and the upper groove wall surface of the positioning groove 36 is coplanar with the first clamping surface in the embodiment; a third rib 33 and a fourth rib 34 are formed on the lower cavity wall of the first cavity 3 along the front-back direction, the top surface of the third rib 33, the top surface of the fourth rib 34 and the lower groove wall surface of the positioning groove 36 are coplanar, the common surfaces are called as second clamping surfaces, and a clamping gap 35 for clamping and pressing the leaf stem 8 is formed between the second clamping surfaces and the first clamping surfaces. The present embodiment further includes a plurality of connecting assemblies 9 for connecting the blade body 1 and the blade shank 8, and each connecting assembly 9 includes a bolt 91 and a nut 92.
The embodiment is applied to a ceiling fan, when the embodiment is installed, the first cavity 3 of the blade body 1 is sleeved on the blade handle 8 of the ceiling fan, so that the blade handle 8 is clamped in the clamping gap 35, and simultaneously, the rear side surface of the blade handle 8 is arranged on the bottom of the groove of the positioning groove 36 in an overhead mode; because the blade handle 8 is clamped in the clamping gap 35, a certain distance exists between the upper surface of the blade handle 8 and the upper cavity wall of the first cavity 3 and between the lower surface of the blade handle 8 and the lower cavity wall of the first cavity 3, so that the thickness of the blade handle 8 can be reduced, the weight of the blade handle 8 is reduced, the load of a motor of the ceiling fan is reduced, the blade body 1 can be driven by the motor, and the working efficiency is improved. In addition, because a reinforcing rib 5 is arranged in the cavity 2 of the blade body 1, the top end of the reinforcing rib 5 is connected with the upper cavity wall of the cavity 2, and the bottom end of the reinforcing rib 5 is connected with the lower cavity wall of the cavity 2, the blade body 1 is higher in structure, and the service life of the blade is prolonged. Meanwhile, because the top surface of the third rib 33, the top surface of the fourth rib 34 and the lower groove wall surface of the positioning groove 36 form a second clamping surface, when the blade is assembled, the angle formed by the second clamping surface and the groove bottom surface of the positioning groove 36 is opposite to the angle of the blade handle 8 with a rectangular cross section, so that the bolt 91 for fixing the blade body 1 and the blade handle 8 together can be conveniently penetrated, and the assembly efficiency is greatly improved.
As shown in fig. 2, the height of the first rib 31 is D1, the height of the second rib 32 is D2, the height of the third rib 33 is D3, the height of the fourth rib 34 is D4, the ratio of the height D3 to the height D1 is 1. Such a structure enables the petiole 8 to be arranged closer to the bottom of the blade body 1, and enables the connecting structure of the petiole 8 and the blade body 1 to be more stable.
As shown in fig. 2, 4 and 5, an upper groove 37 is formed between the first rib 31 and the second rib 32, and a lower groove 38 is formed between the third rib 33 and the fourth rib 34; be formed with a plurality of mounting holes 6 and a plurality of mounting hole 7 down on the blade body 1, a plurality of mounting holes 6 of going up, a plurality of mounting hole 7 all are laid along left right direction down, and a plurality of mounting holes 6 of going up, a plurality of mounting hole 7 all are close to the one end setting of blade body 1 down, each is gone up mounting hole 6 and all is linked together the upper surface and the upper groove 37 of blade body 1, each mounting hole 7 all communicates the lower surface and the lower groove 38 of blade body 1 down, the hole axis of mounting hole 6 and the hole axis collineation setting of mounting hole 7 once on one. In this embodiment, a connecting assembly 9 corresponds to the lower mounting hole 7 and the upper mounting hole 6, and when the connecting assembly 9 is used, one end of the bolt 91 passes through the lower mounting hole 7, the blade shank 8 and the upper mounting hole 6 and then is connected with the nut 91 through threads. Through the design, the bolt 91 for connecting the blade body 1 and the blade shank 8 is more convenient to mount.
As shown in fig. 5, the bolt 91 has a bolt head diameter D5 and the nut 92 has a diameter D6; the distance between the front side of the first rib 31 and the rear side of the second rib 32 is D7, and the distance between the front side of the third rib 33 and the rear side of the fourth rib 34 is D8; the ratio of the distance D7 to the diameter D5, the ratio of the distance D8 to the diameter D5, the ratio of the distance D7 to the diameter D6, and the ratio of the distance D8 to the diameter D6 are all 1.2, the diameters D5 and D6 of the present embodiment are both 21.75mm, and the distances D7 and D8 are both 18mm. Through the design, the first convex rib 31 and the second convex rib 32 are located in the projection range of the nut 92 on the upper surface of the blade handle 8 in the projection range of the upper surface of the blade handle 8 in the projection of the upper surface of the blade handle 8, the third convex rib 33 and the fourth convex rib 34 are located in the projection range of the bolt head of the bolt 91 on the lower surface of the blade handle 8 in the projection range of the bolt head of the bolt 91 in the clamping process of the bolt head of the bolt 91 and the nut 92 on the blade body 1, acting force is concentrated on the first convex rib 31, the second convex rib 32, the third convex rib 33 and the fourth convex rib 34, the stress structure of the blade body 1 is more reasonable, and the clamping and positioning effect between the blade body 1 and the blade handle 8 is better.
As shown in fig. 4, a distance between the front side surface of the reinforcing rib 5 and the front end of the blade body 1 is D9, a distance between the rear side surface of the reinforcing rib 5 and the rear end of the blade body 1 is D10, a ratio of the distance D10 to the distance D9 is 1.04, the distance D9 of the embodiment is 84.87mm, and the distance D10 is 81.64mm. Such design can make strengthening rib 5 be in the middle part position of blade body 1 in the front and back direction, makes blade body 1 obtain better reinforcement effect through strengthening rib 5.
As shown in fig. 2, 4 and 5, a falling preventing hole 39 is formed in the first cavity 3 near the front end of the blade body 1, the hole axis of the falling preventing hole 39 is arranged along the left-right direction, and the falling preventing hole 39 is used for installing a steel wire rope. When the blade is used, one end of the steel wire rope is fixedly connected with a motor rotor or a blade handle 8 of the ceiling fan, and the other end of the steel wire rope is fixedly connected with the end, far away from the blade handle 8, of the blade body 1 in a knotting mode or the like. When the blade body 1 breaks, the steel wire rope can prevent the broken part of the blade body 1 from falling, so that the serious consequence is avoided, and the safety is improved.
As shown in fig. 2, the outer contour of the cross section of the blade body 1 is formed by sequentially enclosing a first arc segment 101, a second arc segment 102, a third arc segment 103, a fourth arc segment 104, a fifth arc segment 105, a sixth arc segment 106, a seventh arc segment 107, an eighth arc segment 108, a ninth arc segment 109 and a tenth arc segment 110 end to end; the first circular arc section 101, the second circular arc section 102, the third circular arc section 103 and the fourth circular arc section 104 are combined to form the upper edge of the outer contour of the cross section of the blade body 1, the circle centers of the first circular arc section 101, the second circular arc section 102, the third circular arc section 103 and the fourth circular arc section 104 are all located below the upper edge of the outer contour of the cross section of the blade body 1, the radius of the first circular arc section 101 is 50mm, the arc length is 23mm, the radius of the second circular arc section 102 is 165mm, the arc length is 45mm, the radius of the third circular arc section 103 is 425mm, the arc length is 34mm, the radius of the fourth circular arc section 104 is 237mm, and the arc length is 72mm; the lower edge of the outer contour of the cross section of the blade body 1 is formed by combining a sixth arc section 106, a seventh arc section 107, an eighth arc section 108 and a ninth arc section 109, the circle center of the sixth arc section 106 is positioned below the lower edge of the outer contour of the cross section of the blade body 1, the circle centers of the seventh arc section 107, the eighth arc section 108 and the ninth arc section 109 are all positioned above the lower edge of the outer contour of the cross section of the blade body 1, the radius of the sixth arc section 106 is 214mm, the arc length is 67mm, the radius of the seventh arc section 107 is 6931mm, the arc length is 33mm, the radius of the eighth arc section 108 is 530mm, the arc length is 52mm, and the radius of the ninth arc section 109 is 62mm and the arc length is 14mm; the fifth arc segment 105 is a fillet smoothly connecting the fourth arc segment 104 and the sixth arc segment 106, and the radius of the fifth arc segment 105 is 0.6mm and the arc length is 2mm; the tenth arc segment 110 is a fillet smoothly connecting the ninth arc segment 109 and the first arc segment 101, and the radius of the tenth arc segment 110 is 5mm and the arc length is 11mm; the first cavity 3 is disposed adjacent to the tenth arc segment 110, and the second cavity 4 is disposed adjacent to the fifth arc segment 105. The design can lead the cross section of the blade body 1 to be in a streamline water drop-shaped structure, thus leading the blade to have better blowing performance.
As shown in fig. 3, the length D11 of the blade body 1 is 3350mm. When the space of the working environment is larger, the design is beneficial to the blade to meet the ventilation and cooling requirements.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, which may be modified, combined, and varied by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. A blade comprises a blade body, wherein the blade body is a strip-shaped section, the length direction of the blade body is the left-right direction, the width direction of the blade body is the front-back direction, and the thickness direction of the blade body is the up-down direction; the method is characterized in that:
a cavity is formed in the cross section of the blade body, a reinforcing rib is arranged in the cavity, the top end of the reinforcing rib is connected with the upper cavity wall of the cavity, and the bottom end of the reinforcing rib is connected with the lower cavity wall of the cavity, so that the cavity is divided into a first cavity and a second cavity through the reinforcing rib, the first cavity and the second cavity are sequentially arranged in the front-back direction, and a positioning groove is formed in the front side surface of the reinforcing rib;
a first convex rib and a second convex rib are formed on the upper cavity wall of the first cavity along the front-back direction, the bottom surface of the first convex rib is coplanar with the bottom surface of the second convex rib, the common surface is called a first clamping surface, and the upper groove wall surface of the positioning groove is coplanar with or higher than the first clamping surface; a third convex rib and a fourth convex rib are formed on the lower cavity wall of the first cavity along the front-back direction, the top surface of the third convex rib, the top surface of the fourth convex rib and the lower groove wall surface of the positioning groove are coplanar, the total surface is called a second clamping and pressing surface, and a clamping and pressing gap for clamping and pressing the leaf stalks is formed between the second clamping and pressing surface and the first clamping and pressing surface.
2. A blade according to claim 1, wherein: the height of the first convex rib is D1, the height of the second convex rib is D2, the height of the third convex rib is D3, the height of the fourth convex rib is D4, the ratio of the height D3 to the height D1 is in the range of 1:2-1:3, and the ratio of the height D4 to the height D2 is in the range of 1:2-1:3.
3. A blade according to claim 1, wherein: an upper groove is formed between the first convex rib and the second convex rib, and a lower groove is formed between the third convex rib and the fourth convex rib; be formed with a plurality of mounting holes and a plurality of mounting hole down on the blade body, a plurality of mounting holes, a plurality of mounting hole down all lay along the left right direction, and a plurality of mounting holes, a plurality of mounting hole all are close to the one end setting of blade body down, and each is gone up the upper surface and the upper groove that the mounting hole all communicates the blade body, and each mounting hole all communicates the lower surface and the lower recess of blade body down, and the hole axis of one last mounting hole sets up with the hole axis collineation of mounting hole once.
4. A blade according to claim 3, wherein: the blade comprises a blade body and a blade shank, and is characterized by further comprising a plurality of connecting components for connecting the blade body and the blade shank, wherein each connecting component comprises a bolt and a nut, one connecting component corresponds to one lower mounting hole and one upper mounting hole, one end of the bolt of each connecting component penetrates through the lower mounting hole, the blade shank and the upper mounting hole and then is in threaded connection with the nuts, the diameter of the bolt head of the bolt is D5, and the diameter of the nut is D6; the distance between the front side surface of the first convex rib and the rear side surface of the second convex rib is D7, and the distance between the front side surface of the third convex rib and the rear side surface of the fourth convex rib is D8; the ratio of the distance D7 to the diameter D5, the ratio of the distance D8 to the diameter D5, the ratio of the distance D7 to the diameter D6, and the ratio of the distance D8 to the diameter D6 are all within the range of 1:1-1.3.
5. A blade according to claim 1, wherein: the distance between the front side face of the reinforcing rib and the front end of the blade body is D9, the distance between the rear side face of the reinforcing rib and the rear end of the blade body is D10, and the ratio of the distance D10 to the distance D9 is in the range of 0.9-1.1.
6. A blade according to claim 1, wherein: an anti-falling hole is formed in the first cavity close to the front end of the blade body, the axis of the anti-falling hole is arranged along the left-right direction, and the anti-falling hole is used for installing a steel wire rope.
7. A blade according to any one of claims 1 to 5, wherein: the outer contour of the cross section of the blade body is formed by sequentially connecting and enclosing a first arc section, a second arc section, a third arc section, a fourth arc section, a fifth arc section, a sixth arc section, a seventh arc section, an eighth arc section, a ninth arc section and a tenth arc section end to end; the upper edge of the outer contour of the cross section of the blade body is formed by combining a first arc section, a second arc section, a third arc section and a fourth arc section, the circle centers of the first arc section, the second arc section, the third arc section and the fourth arc section are all positioned below the upper edge of the outer contour of the cross section of the blade body, the radius of the first arc section is 50 +/-1 mm, the arc length is 23 +/-1 mm, the radius of the second arc section is 165 +/-1 mm, the arc length is 45 +/-1 mm, the radius of the third arc section is 425 +/-1 mm, the arc length is 34 +/-1 mm, the radius of the fourth arc section is 237 +/-1 mm, and the arc length is 72 +/-1 mm; the lower edge of the outer contour of the cross section of the blade body is formed by combining a sixth arc section, a seventh arc section, an eighth arc section and a ninth arc section, the circle center of the sixth arc section is positioned below the lower edge of the outer contour of the cross section of the blade body, the circle centers of the seventh arc section, the eighth arc section and the ninth arc section are all positioned above the lower edge of the outer contour of the cross section of the blade body, the radius of the sixth arc section is 214 +/-1 mm, the arc length is 67 +/-1 mm, the radius of the seventh arc section is 6931 +/-1 mm, the arc length is 33 +/-1 mm, the radius of the eighth arc section is 530 +/-1 mm, the arc length is 52 +/-1 mm, the radius of the ninth arc section is 62 +/-1 mm, and the arc length is 14 +/-1 mm; the fifth circular arc section is a fillet smoothly connecting the fourth circular arc section and the sixth circular arc section, the radius of the fifth circular arc section is 0.6 +/-0.1 mm, and the arc length is 2 +/-0.5 mm; the tenth arc segment is a fillet smoothly connecting the ninth arc segment and the first arc segment, and has a radius of 5 +/-1 mm and an arc length of 11 +/-1 mm; the first cavity is arranged close to the tenth arc segment, and the second cavity is arranged close to the fifth arc segment.
8. A blade according to claim 7, wherein: the length D11 of the blade body is 3350 +/-100 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222415789.XU CN218760591U (en) | 2022-09-14 | 2022-09-14 | Blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222415789.XU CN218760591U (en) | 2022-09-14 | 2022-09-14 | Blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218760591U true CN218760591U (en) | 2023-03-28 |
Family
ID=85694860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222415789.XU Active CN218760591U (en) | 2022-09-14 | 2022-09-14 | Blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218760591U (en) |
-
2022
- 2022-09-14 CN CN202222415789.XU patent/CN218760591U/en active Active
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