CN218449673U - Motor plate fixing structure - Google Patents

Abstract

The application discloses a motor plate fixing structure which comprises a motor plate and a pressing block assembly, wherein a first inclined surface and a second inclined surface are formed at two ends of the motor plate respectively, the inclined directions of the first inclined surface and the second inclined surface are opposite, the included angles between the tangent plane of the first inclined surface and the tangent plane of the second inclined surface and the second surface are acute angles, and the motor is arranged on the first surface; the briquetting subassembly includes first briquetting and second briquetting, and first briquetting forms the third inclined plane, and the second briquetting forms the fourth inclined plane, and the third inclined plane top of first briquetting supports first inclined plane setting, and the fourth inclined plane top of second briquetting supports the second inclined plane setting to fixed motor board. Above-mentioned structure, the briquetting subassembly can provide the tensile force of vertical direction, can also provide the tensile force of horizontal direction for when the motor board was pulled to belt incline direction, the motor board also can firmly be detained, has avoided the fix with screw motor board, and the problem of screw and motor board is damaged easily to belt horizontal direction component force.

Description

Motor plate fixing structure

Technical Field

The utility model relates to a technical field is fixed to the device, especially relates to a motor plate fixed knot constructs.

Background

The motor plate is loaded with the motor, and the motor is fixed on other devices by fixing the motor plate.

The existing scheme for fixing the motor plate is to arrange a waist hole on the motor plate and fix the motor plate by screws. However, when the motor works, the belt is driven to rotate, the tensile force transmitted to the motor plate by the belt through the motor cannot be completely perpendicular to the vertical direction of the plane of the motor plate, and the direction of the tensile force transmitted to the motor plate by fixing the motor plate through the screw is perpendicular to the vertical direction of the plane of the motor plate, so that when the component force transmitted to the motor plate by the belt in the horizontal direction is too large, the screw and the motor plate can be damaged, and the hidden danger of part damage exists.

At present, a new scheme for fixing a motor plate is urgently needed to avoid the problem that a component is damaged by a component force in the horizontal direction of a belt.

SUMMERY OF THE UTILITY MODEL

The purpose of this application embodiment is to provide a motor board fixed knot constructs to avoid belt horizontal direction component to cause the damage to the part.

In order to solve the above technical problem, an embodiment of the present application provides a motor plate fixing structure, where the motor plate fixing structure includes a motor plate and a pressing block assembly; the motor plate comprises a first surface and a second surface which are opposite, a first inclined surface and a second inclined surface are respectively formed at two ends of the motor plate, the inclination directions of the first inclined surface and the second inclined surface are opposite, the included angles between the tangent plane of the first inclined surface and the tangent plane of the second inclined surface and the second surface are acute angles, and the motor is arranged on the first surface; the briquetting subassembly includes first briquetting and second briquetting, and first briquetting forms the third inclined plane, and the second briquetting forms the fourth inclined plane, and the third inclined plane top of first briquetting supports first inclined plane setting, and the fourth inclined plane top of second briquetting supports the second inclined plane setting to fixed motor board.

In a possible embodiment, the included angle between the tangent plane of the first inclined surface and the second surface is in a range of 35 degrees to 55 degrees; the included angle between the tangent plane of the second inclined plane and the second surface ranges from 35 degrees to 55 degrees.

In a possible embodiment, the tangent plane to the first inclined plane has the same inclination angle as the tangent plane to the second inclined plane.

In a possible embodiment, the third inclined plane has the same inclination angle with the tangent plane of the first inclined plane and opposite orientation; the inclined angle of the tangent plane of the fourth inclined plane is the same as that of the tangent plane of the second inclined plane, and the direction of the inclined plane is opposite.

In a possible implementation mode, the first inclined surface is formed with a first convex part, the third inclined surface is formed with a first concave part, and the first convex part is embedded into the first concave part so as to prevent the first pressing block from sliding laterally; the second inclined plane is formed with the second bellying, and the fourth inclined plane is formed with the second depressed part, and the second bellying embedding second depressed part to avoid the second briquetting to sideslip.

In one possible embodiment, the first compact includes a first upper surface disposed coplanar with the first surface and a first lower surface disposed coplanar with the second surface; the second pressing block comprises a second upper surface and a second lower surface, the second upper surface is arranged in a coplanar manner with the first surface, and the second lower surface is arranged in a coplanar manner with the second surface.

In a possible implementation mode, the first inclined surface and the third inclined surface are equal in area and are arranged in a superposition mode; the second inclined plane is equal to the fourth inclined plane in area and is overlapped with the fourth inclined plane.

In one possible embodiment, the first inclined surface and the second inclined surface are flat or curved.

In one possible embodiment, the motor board comprises a first set of opposing ends and a second set of opposing ends; the first inclined plane and the second inclined plane are respectively positioned at two ends of a first group of opposite ends, and a fifth inclined plane and a sixth inclined plane are respectively formed at two ends of a second group of opposite ends; the pressing block assembly further comprises a third pressing block and a fourth pressing block, the third pressing block forms a seventh inclined plane, the fourth pressing block forms an eighth inclined plane, the seventh inclined plane of the third pressing block abuts against the fifth inclined plane, and the eighth inclined plane of the fourth pressing block abuts against the sixth inclined plane.

In a possible embodiment, the included angle between the tangent plane of the fifth inclined surface and the tangent plane of the sixth inclined surface and the second surface is acute.

The beneficial effect of this application is: different from the situation of the prior art, the application provides a motor plate fixing structure which comprises a motor plate and a pressing block assembly; the motor plate comprises a first surface and a second surface which are opposite, a first inclined surface and a second inclined surface are respectively formed at two ends of the motor plate, the inclination directions of the first inclined surface and the second inclined surface are opposite, the included angles between the tangent plane of the first inclined surface and the tangent plane of the second inclined surface and the second surface are acute angles, and the motor is arranged on the first surface; the briquetting subassembly includes first briquetting and second briquetting, and first briquetting forms the third inclined plane, and the second briquetting forms the fourth inclined plane, and the third inclined plane top of first briquetting supports first inclined plane setting, and the fourth inclined plane top of second briquetting supports the second inclined plane setting to fixed motor board. The utility model provides a motor board fixed knot constructs, form the opposite inclined plane of slope direction at the relative both ends of motor board, the briquetting that has the inclined plane equally removes to push up the inclined plane that supports motor board both ends, the motor board is supported on the slope top, can not only provide the tensile force of vertical direction for the motor board, can also provide the tensile force of horizontal direction for the motor board, when the tensile force of belt is not the complete perpendicular to motor board, the briquetting also can provide the firm motor board of tensile force of horizontal direction, can not damage the part.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

FIG. 1 is a schematic structural view of a first embodiment of a motor plate fixing structure according to the present application;

fig. 2 is a schematic structural view of a second embodiment of the motor plate fixing structure of the present application.

Reference numerals: 100. a motor plate fixing structure; 110. a motor plate; 111. a first surface; 112. a second surface; 113/213, a first inclined surface; 114/214, a second inclined surface; 120. a briquetting assembly; 121. a first pressing block; 122. a second pressing block; 123/223, third inclined surface; 124/224 and a fourth inclined surface.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" typically includes at least two, but does not exclude the presence of at least one.

It should be understood that the term "and/or" as used herein is merely a relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that the terms "comprises," "comprising," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element.

In the prior art, the motor plate is fixed through the screws, the screws only can provide tension in the vertical direction, and the tension of the belt on the motor plate has component force in the horizontal direction, so that when the component force in the horizontal direction is too large, the screws are easily damaged, and parts are damaged.

The utility model provides a motor board fixed knot constructs through the fixed motor board of briquetting subassembly, can effectively solve above-mentioned technical problem, combines the figure and embodiment to carry out detailed description to a motor board fixed knot structure that this application provided below.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a first embodiment of a motor plate fixing structure according to the present application. In one particular embodiment, the motor plate fixing structure 100 of the present application includes a motor plate 110 and a compact assembly 120.

The motor plate 110 comprises a first surface 111 and a second surface 112 which are opposite, a first inclined surface 113 and a second inclined surface 114 are respectively formed at two ends of the motor plate 110, the inclination directions of the first inclined surface 113 and the second inclined surface 114 are opposite, the included angles between the tangent plane of the first inclined surface 113 and the tangent plane of the second inclined surface 114 and the second surface 112 are acute angles, and the motor is arranged on the first surface 111; the pressing block assembly 120 comprises a first pressing block 121 and a second pressing block 122, the first pressing block 121 forms a third inclined surface 123, the second pressing block 122 forms a fourth inclined surface 124, the third inclined surface 123 of the first pressing block 121 abuts against the first inclined surface 113 to be arranged, and the fourth inclined surface 124 of the second pressing block 122 abuts against the second inclined surface 114 to be arranged, so that the motor plate 110 is fixed. Specifically, different from the existing motor plate 110, the two ends of the motor plate 110 of the present application respectively form the first inclined surface 113 and the second inclined surface 114 by cutting, and the first inclined surface 113 and the second inclined surface 114 are controlled to incline in opposite directions during cutting, so that the motor plate 110 is in a step structure, and when the motor plate 110 is fixed, the third inclined surface 123 of the first pressing block 121 abuts against the first inclined surface 113 at one end of the motor plate 110, and the fourth inclined surface 124 of the second pressing block 122 abuts against the second inclined surface 114 at the other end of the motor plate 110. The included angle between the tangent plane of the first inclined plane 113 and the tangent plane of the second inclined plane 114 and the second surface 112 is an acute angle, and the pressing block assembly 120 is obliquely pressed against the motor plate 110, so that not only is a vertical tensioning force provided for the motor plate 110, but also a horizontal tensioning force is provided for the motor plate 110. When the motor on the first surface 111 is pulled by the belt and transmits a horizontal component force to the motor plate 110, the motor can be firmly buckled by the pressing block assembly 120. And support motor board 110 through briquetting subassembly 120 top, motor board 110 lifting surface area is bigger, and the belt pulling force that makes motor board 110 bear is bigger, has strengthened the fixed strength of motor board 110.

Different from the prior art, the motor plate fixing structure 100 of the application designs the motor plate 110 into a step structure, and the pressing block assemblies 120 at two ends abut against the motor plate 110 of the step structure, so that the pressing block assemblies 120 can provide a vertical tensile force and a horizontal tensile force, and when the motor plate 110 is pulled in the inclined direction of the belt, the motor plate 110 can be firmly buckled, thereby avoiding the problem that the motor plate 110 is fixed by a screw and the motor plate 110 are easily damaged by the horizontal component force of the belt. And the force bearing area of the pressing block assembly 120 and the motor plate 110 is larger, and the fixing strength of the motor plate 110 is enhanced.

On the other hand, traditional motor board 110's fixed screw fixation is passed through, and the waist hole position need be predetermine on motor board 110 to the mode of fix with screw, in order to avoid the part rigidity decline that the waist hole wall leads to the fact near too far away on motor board 110 limit, consequently great space need be reserved in the waist hole, can cause motor board 110 oversize, and this application need not give waist hole headspace through briquetting subassembly 120 fixed motor board 110's scheme, has reduced motor board 110's size.

In some embodiments, the tangent plane to the first inclined surface 113 is at an angle in the range of 35 degrees to 55 degrees with respect to the second surface 112; the tangent plane of the second inclined surface 114 is at an angle in the range of 35 degrees to 55 degrees with respect to the second surface 112. Specifically, when the included angles between the first inclined surface 113 and the second inclined surface 114 and the second surface 112 are too small, the first inclined surface 113 and the second inclined surface 114 occupy more planar space, the motor plate 110 is oversized, and the pressing block assembly 120 may not provide sufficient horizontal tension to the motor plate 110. When the included angles between the first inclined surface 113 and the second inclined surface 114 and the second surface 112 are too large, the pressing block assembly 120 may not provide sufficient vertical tension to the motor plate 110. Through practical tests, included angles between the first inclined surface 113, the second inclined surface 114 and the second plane are controlled within a range of 35 degrees to 55 degrees, and the fixing effect of the motor plate 110 can be guaranteed. For example, the included angle between the first inclined surface 113 and the second surface 112 is not particularly limited, and the included angle between the second inclined surface 114 and the second surface 112 is not particularly limited, but is not particularly limited, when the first inclined surface 113 is cut, the included angle between the second inclined surface 114 and the second surface 112 is controlled, for example, to be 35 degrees, 45 degrees, or 55 degrees. In one embodiment, the first inclined surface 113 and the second surface 112 are preferably at an angle of 45 degrees, and the second inclined surface 114 and the second surface 112 are preferably at an angle of 45 degrees, so as to ensure that the pressing block assembly 120 can provide sufficient horizontal tensioning force and vertical tensioning force.

Further, in a preferred embodiment, the inclination angle of the tangent plane to the first inclined surface 113 is controlled to be the same as that of the tangent plane to the second inclined surface 114. Specifically, for example, the included angle between the tangent plane of the first inclined surface 113 and the second surface 112 and the included angle between the tangent plane of the second inclined surface 114 and the second surface 112 are both controlled to be 35 degrees, or both controlled to be 45 degrees, or both controlled to be 55 degrees. The advantage of this design is, makes the both ends atress of motor board 110 the same, and the stability that motor board 110 was fixed is better, and the aesthetic property of motor board fixed knot structure 100 is better.

In some embodiments, the third inclined surface 123 is inclined at the same angle as the tangent plane of the first inclined surface 113, and in the opposite direction; the fourth inclined surface 124 is inclined at the same angle as the tangential plane of the second inclined surface 114 and in the opposite direction. The first inclined surface 113 and the third inclined surface 123 have the same area and are overlapped; the second inclined surface 114 and the fourth inclined surface 124 have the same area and overlap each other. Specifically, the design enables the third inclined surface 123 of the first pressing block 121 to be in full contact coincidence with the first inclined surface 113 of the motor plate 110, and the fourth inclined surface 124 of the second pressing block 122 to be in full contact coincidence with the second inclined surface 114 of the motor plate 110; the contact coincidence can make the stressed area larger, and the first pressing block 121 and the second pressing block 122 are more firmly propped against the fixed motor plate 110.

In some embodiments, the first compact 121 includes a first upper surface disposed coplanar with the first surface 111 and a first lower surface disposed coplanar with the second surface 112; second compact 122 includes a second upper surface disposed coplanar with first surface 111 and a second lower surface disposed coplanar with second surface 112. Specifically, the design is that the heights of the first pressing block 121 and the second pressing block 122 are equal to the height of the motor plate 110, and after the first pressing block 121 and the second pressing block 122 abut against the motor plate 110, the upper and lower surfaces of the first pressing block 121, the second pressing block 122 and the motor plate 110 are coplanar, so that there is no abrupt structure, and the motor plate fixing structure 100 has better aesthetic property.

Further, in some other embodiments, the first lower surface of the first pressing block 121 is disposed coplanar with the second surface 112, the first upper surface is not disposed coplanar with the first surface 111, the first upper surface is located above the first surface 111, and the first pressing block 121, in addition to abutting against the first inclined surface 113 of the motor plate 110 by the third inclined surface 123, further includes a horizontal abutting portion abutting against the first surface 111 of the motor plate 110; similarly, the second pressing block 122 also includes a first surface 111 with a top and a bottom horizontal surfaces abutting against the motor plate 110, and the structural design has the advantage of enhancing the fixing effect of the motor plate 110.

In this embodiment, the first inclined surface 113, the second inclined surface 114, the third inclined surface 123 and the fourth inclined surface 124 are all flat surfaces, in some other embodiments, please refer to fig. 2 in combination, fig. 2 is a schematic structural diagram of a second embodiment of the motor plate fixing structure of the present application, in this embodiment, the first inclined surface 213 and the second inclined surface 214 can also be configured as inwardly concave curved surfaces, correspondingly, the third inclined surface 223 and the fourth inclined surface 224 are configured as outwardly convex curved surfaces which are respectively embedded with the curved surfaces of the first inclined surface 213 and the second inclined surface 214, and the design has the advantage that after the pressing block assembly abuts against the inclined surfaces at the two ends of the motor plate, the sliding is not easy to occur, and the motor plate is fixed more firmly.

Referring to fig. 1, in some other embodiments, the first inclined surface 113 is formed with a first protrusion (not shown), the third inclined surface 123 is formed with a first recess (not shown), and the first protrusion is embedded into the first recess to prevent the first pressing block 121 from sliding laterally; the second inclined surface 114 is formed with a second protrusion (not shown), and the fourth inclined surface 124 is formed with a second recess (not shown), into which the second protrusion is inserted to prevent the second pressing block 122 from sliding sideways. Specifically, the motor plate 110 is fixed by not only providing a tensile force through the abutting of the inclined surface of the pressing block assembly 120, but also assisting in fixing the motor plate 110 by inserting the pressing block assembly 120 through a protruding structure formed on the motor plate 110, and the fixing strength of the motor plate 110 is higher. It is to be understood that, in other embodiments, the surfaces of the first inclined surface 113, the second inclined surface 114, the third inclined surface 123, and the fourth inclined surface 124 form mutually-embedded ravine stripes, which can also prevent the side slipping and enhance the fixing effect, and are not limited herein. Further, in some other embodiments, the inclined surfaces are configured as mutually-embedded curved surfaces, and simultaneously, mutually-embedded protrusions, recesses or ravine stripes are formed on the inclined surfaces, so as to jointly enhance the fixing strength of the motor plate 110, which is not limited herein.

In some embodiments, the motor plate 110 includes a first set of opposing ends and a second set of opposing ends; the first inclined surface 113 and the second inclined surface 114 are respectively positioned at two ends of a first set of opposite ends, and a fifth inclined surface (not shown) and a sixth inclined surface (not shown) are respectively formed at two ends of a second set of opposite ends; the pressing block assembly 120 further comprises a third pressing block (not shown) and a fourth pressing block (not shown), the third pressing block forms a seventh inclined surface (not shown), the fourth pressing block forms an eighth inclined surface (not shown), the seventh inclined surface of the third pressing block abuts against the fifth inclined surface, and the eighth inclined surface of the fourth pressing block abuts against the sixth inclined surface. The included angles between the tangent plane of the fifth inclined surface and the tangent plane of the sixth inclined surface and the second surface 112 are acute angles. Specifically, for avoiding the belt to cause motor board 110 not hard up to the horizontal tension in each position of motor board 110, all form the cutting with four flange edges of two sets of opposite ends of motor board 110, form the inclined plane respectively, every inclined plane all pushes up through the inclined plane of briquetting and supports fixedly, and this structural design enables motor board 110 when receiving the horizontal tension of belt all directions, and the homoenergetic keeps firmly by the tensile force that the briquetting provided. The included angle between the tangent plane of the inclined planes at the four ends of the motor board 110 and the second surface 112 ranges from 35 degrees to 55 degrees, such as 35 degrees, 45 degrees or 55 degrees, which is not limited herein, and the included angle between each inclined plane and the second surface 112 is preferably 45 degrees.

Different from the prior art, the motor plate fixing structure 100 of the application designs the motor plate 110 into a step structure, and the pressing block assemblies 120 at two ends abut against the motor plate 110 of the step structure, so that the pressing block assemblies 120 can provide a vertical tensile force and a horizontal tensile force, when the motor plate 110 is pulled in the inclined direction of a belt, the motor plate 110 can be firmly buckled, the problem that the motor plate 110 is fixed by a screw and the motor plate 110 are easily damaged by the horizontal component force of the belt is solved. And the stress area of the pressing block assembly 120 and the motor plate 110 is larger, and the fixing strength of the motor plate 110 is enhanced. On the other hand, traditional motor board 110's fixed screw fixation is passed through, and the waist hole position need be predetermine on motor board 110 to the mode of fix with screw, in order to avoid the part rigidity decline that the waist hole wall leads to the fact near too far away on motor board 110 limit, consequently great space need be reserved in the waist hole, can cause motor board 110 oversize, and this application need not give waist hole headspace through briquetting subassembly 120 fixed motor board 110's scheme, has reduced motor board 110's size.

The above description is only an embodiment of the present application, and not intended to limit the scope of the present application, and all modifications that can be made by using equivalent structures or equivalent principles in the contents of the specification and the drawings or directly or indirectly applied to other related technical fields are also included in the scope of the present application.

Claims (10)

1. A motor board fixed knot constructs characterized in that includes:

the motor plate comprises a first surface and a second surface which are opposite, a first inclined surface and a second inclined surface are respectively formed at two ends of the motor plate, the inclination directions of the first inclined surface and the second inclined surface are opposite, the included angles between the tangent plane of the first inclined surface and the tangent plane of the second inclined surface and the second surface are acute angles, and the motor is arranged on the first surface;

the briquetting subassembly, the briquetting subassembly includes first briquetting and second briquetting, first briquetting forms the third inclined plane, the second briquetting forms the fourth inclined plane, first briquetting third inclined plane top is supported first inclined plane sets up, the second briquetting fourth inclined plane top is supported the second inclined plane sets up, in order to fix the motor board.

2. The motor plate fixing structure according to claim 1,

the included angle between the tangent plane of the first inclined plane and the second surface ranges from 35 degrees to 55 degrees;

the included angle range between the tangent plane of the second inclined plane and the second surface is 35-55 degrees.

3. The motor plate fixing structure according to claim 2,

the inclination angle of the tangent plane of the first inclined plane is the same as that of the tangent plane of the second inclined plane.

4. The motor plate fixing structure according to claim 1,

the inclination angle of the tangent plane of the third inclined plane is the same as that of the tangent plane of the first inclined plane, and the directions of the third inclined plane and the tangent plane of the first inclined plane are opposite;

the fourth inclined plane has the same inclination angle with the tangent plane of the second inclined plane and has opposite direction.

5. The motor plate fixing structure according to claim 1,

the first inclined plane is provided with a first protruding part, the third inclined plane is provided with a first recessed part, and the first protruding part is embedded into the first recessed part so as to prevent the first pressing block from sideslipping;

the second inclined plane is formed with the second bellying, the fourth inclined plane is formed with the second depressed part, the embedding of second bellying the second depressed part is in order to avoid the second briquetting sideslips.

6. The motor plate fixing structure according to claim 1,

the first compact includes a first upper surface disposed coplanar with the first surface and a first lower surface disposed coplanar with the second surface;

the second pressing block comprises a second upper surface and a second lower surface, the second upper surface is arranged in a coplanar manner with the first surface, and the second lower surface is arranged in a coplanar manner with the second surface.

7. The motor plate fixing structure according to claim 1,

the first inclined plane and the third inclined plane have the same area and are arranged in a superposition way;

the second inclined plane and the fourth inclined plane are equal in area and are overlapped.

8. The motor plate fixing structure according to claim 1,

the first inclined plane and the second inclined plane are planes or curved surfaces.

9. The motor plate fixing structure according to claim 1,

the motor board comprises a first group of opposite ends and a second group of opposite ends;

the first inclined plane and the second inclined plane are respectively positioned at two ends of the first group of opposite ends, and a fifth inclined plane and a sixth inclined plane are respectively formed at two ends of the second group of opposite ends;

the pressing block assembly further comprises a third pressing block and a fourth pressing block, the third pressing block forms a seventh inclined plane, the fourth pressing block forms an eighth inclined plane, the seventh inclined plane of the third pressing block abuts against the fifth inclined plane, and the eighth inclined plane of the fourth pressing block abuts against the sixth inclined plane.

10. The motor plate fixing structure according to claim 9,

and the included angles between the tangent plane of the fifth inclined plane and the tangent plane of the sixth inclined plane and the second surface are acute angles.

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