CN211449185U

CN211449185U - External adjusting device for mounting angle of cast aluminum alloy blade of axial-flow fan

Info

Publication number: CN211449185U
Application number: CN202020056277.7U
Authority: CN
Inventors: 相应申; 相红才
Original assignee: Shanxi Sheng Jia Ventilation Equipment Co ltd
Current assignee: Shanxi Sheng Jia Ventilation Equipment Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-09-08
Anticipated expiration: 2030-01-10

Abstract

The utility model discloses an external adjusting device for the installation angle of an aluminum alloy blade cast by an axial-flow ventilator, which comprises a blade, a blade handle sleeve, a hub panel, a wedge sleeve, a pressure plate and a blade handle disc; the blade handle comprises a first handle end and a second handle end which are opposite, and an annular groove is formed in the outer surface of the middle of the blade handle; the petiole sleeve is sleeved outside the annular groove of the petiole and comprises a first section of a cylinder and a second section of the cylinder; the wedge sleeve is arranged between the annular groove and the second section of the barrel, the pressure plate is sleeved outside the second end of the handle, and the pressure plate is connected with the blade handle sleeve through a first fastener; the petiole dish is located outside the first end of handle, fastens the petiole dish on section one through the second fastener, and the petiole dish is fastened on the petiole through the third fastener. The utility model discloses can facilitate, save time, alleviate intensity of labour, saving human resource, reduction in production cost when installation and angle of adjustment for the blade of axial-flow fan.

Description

External adjusting device for mounting angle of cast aluminum alloy blade of axial-flow fan

Technical Field

The utility model relates to a mining axial-flow fan technical field especially relates to an outer adjusting device of axial-flow fan casting aluminum alloy blade installation angle.

Background

The mine axial-flow ventilator is mainly used for ensuring the ventilation safety of the manual operation in a mine roadway, and the mine axial-flow ventilator is widely applied to the mine operation due to the characteristics of high air pressure, large air volume, high efficiency, low noise and the like. In the existing mining axial-flow ventilator, for the blades of the ventilator, the blades of the ventilator are widely adopted by various axial-flow ventilator production plants due to the characteristics of simple casting and high yield of cast aluminum alloy blades, capability of ensuring the outline dimension and the shape distortion precision of the blades, small density, light weight, small sound energy density and the like of the aluminum alloy.

Meanwhile, the petioles of the aluminum alloy can not be installed by adopting a threaded structure due to the low density of the aluminum alloy. At present, most manufacturers press the petioles tightly by using a semi-circular arc-shaped pressing clamp to fix the installation angle of the blades. However, since the installation petiole is matched with the petiole sleeve to form a certain gap, when the fan runs in a mine, the coal powder can seal the gap of the blade and block the adjustment installation angle of the blade, so that the blade cannot rotate. When adjusting fan blade installation angle like this, all need all dismantle the connecting bolt of a secondary fan, with the organism of secondary fan with axial direction backward movement to vacate the space that the staff can operate, then not hard up petiole root pressure card bolt, clear away the dust, make petiole ability free rotation, fasten again and press the card bolt, adjust the back as required one by one, resume original position to secondary fan according to opposite order again. The operation is adjusted outward to the blade installation angle that so wastes time and energy, has greatly influenced production efficiency and ventilation blower blade's fixed strength.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the technical problem solved by the present invention is to provide an external adjusting device for the installation angle of the cast aluminum alloy blade of an axial-flow fan, so as to change the fixing mode of the cast aluminum alloy blade of the axial-flow fan, improve the fixing strength and strengthen the operability in the field.

In order to achieve the above object, the present invention adopts the following technical means.

The outer adjusting device for the mounting angle of the cast aluminum alloy blade of the axial-flow fan comprises a blade, a blade handle sleeve, a hub panel, a wedge sleeve, a pressure plate and a blade handle disc, wherein the blade is connected with the blade handle, and the blade handle sleeve is fixedly connected with the hub panel; the blade handle is of a cylindrical structure and comprises a first handle end and a second handle end which are opposite, the first handle end is one end connected with the blade, and the outer surface of the middle part of the blade handle is provided with an annular groove; the petiole sleeve is of a cylindrical structure and is sleeved outside the annular groove; the petiole sleeve comprises a first section of the barrel and a second section of the barrel, and a concave hole is formed in the end face of the second section of the barrel; the wedge sleeve is arranged between the annular groove and the second section of the cylinder, and the wedge sleeve is matched with the annular groove and the second section of the cylinder in shape; the pressure plate is of a circular plate-shaped structure, is sleeved outside the second handle end of the blade handle, is provided with a first through hole matched with the concave hole on the surface, and is connected with the blade handle sleeve through a first fastener penetrating through the first through hole and the concave hole; the petiole disc is of a circular plate-shaped structure and is sleeved outside the first end of the petiole; the plate surface of the petiole plate is provided with a second through hole, and the petiole plate is fastened on the end surface of the first section of the cylinder of the petiole sleeve through a second fastener penetrating through the second through hole; the outer surface of the petiole disk is provided with a third through hole, and the petiole disk is fastened on the petiole through a third fastening piece penetrating through the third through hole.

The part of the annular groove close to the second end of the handle is of a frustum-shaped structure, the inner surface of the second section of the cylinder is of a frustum-shaped structure, and the wedge sleeve is of a frustum-shaped structure.

The wedge sleeve is arranged between the annular groove and the second section of the barrel in a blocking mode, and the wedge sleeve is divided into blocks with different sizes according to different angles along the central axis of the wedge sleeve.

The third fastener is a slotted cone end positioning screw.

The distance between the end face of the petiole disc, which deviates from the blades, and the first section of the barrel is 4-8 mm.

The side face of the outer end of the first section of the bucket of the petiole sleeve is provided with an annular notch with the width of 5 mm.

The distance between the root of the blade and the hub panel is 6-7 mm.

The axial-flow type ventilator is provided with a hub radial plate which is of an annular plate-shaped structure, the edge of the outer circle of the hub radial plate is provided with a groove for accommodating a blade handle sleeve, and the outer cylinder wall of the blade handle sleeve is fixedly connected with the hub radial plate.

The distance between the bottom end of the groove and the end face of the second end of the shank of the petiole is 30 mm.

The utility model discloses produced technological effect as follows.

1. A wedge sleeve is arranged between the blade handle and the blade handle sleeve, the wedge sleeve can be in a frustum cylinder shape, and the wedge sleeve is pressed between the blade handle and the blade handle sleeve by a pressure plate, so that the blade handle is prevented from moving back and forth along the axial direction while rotating freely when the angle of the blade is adjusted.

2. The wedge sleeve can be divided into blocks with different sizes and then is arranged between the petiole and the petiole sleeve, so that when the wedge sleeve is disassembled, the small wedge sleeve blocks which are easy to disassemble can be disassembled firstly, and then the rest wedge sleeve blocks are disassembled one by one, thereby achieving the effect of convenient disassembly.

3. The utility model discloses only need not hard up behind the fastener on the petiole dish, can adjust the installation angle of blade, and need not to dismantle all connecting pieces of fan, can facilitate, save time, improve production efficiency for axial-flow fan's blade when installation and angle regulation, practice thrift manpower resources simultaneously, alleviate intensity of labour, reduction in production cost.

Drawings

FIG. 1: the utility model discloses the structural schematic diagram of an embodiment of axial-flow fan casting aluminum alloy blade installation angle outer adjusting device.

Fig. 2A-2B: the utility model discloses the different angle schematic diagrams of connection structure of blade, petiole and petiole dish in the outer adjusting device of axial-flow fan casting aluminum alloy blade installation angle in one kind of embodiment.

Fig. 3A-3B: the utility model discloses the different angle schematic diagrams of petiole sleeve structure of axial-flow fan casting aluminum alloy blade installation angle outer adjusting device embodiment.

Fig. 4A-4B: the utility model discloses the different angle schematic diagrams of wedge cover structure of axial-flow fan casting aluminum alloy blade installation angle outer adjusting device embodiment.

FIG. 5: the utility model discloses the pressure disk structure schematic diagram of an embodiment of axial-flow fan casting aluminum alloy blade installation angle outer adjusting device.

Detailed Description

Please refer to fig. 1, which is a schematic overall structure diagram of an embodiment of an external adjusting device for an installation angle of an aluminum alloy blade cast by an axial-flow ventilator according to the present invention. The external adjusting device for the installation angle of the cast aluminum alloy blade of the axial-flow ventilator in the embodiment comprises a blade 1, a blade handle 2, a blade handle sleeve 3, a hub panel 8, a wedge sleeve 5, a pressure plate 6 and a blade handle disc 4, wherein the blade 1 and the blade handle 2 are integrally formed, and the blade handle sleeve 3 is fixedly connected with the hub panel 8, for example, welding can be adopted.

As shown in fig. 1-2A, the petiole 2 is a cylindrical structure, and includes a first end 21 and a second end 22, the first end 21 is the end connected to the vane 1, the outer surface of the middle portion of the petiole 2 is provided with an annular groove 23, and the portion of the annular groove 23 near the second end 22 is a frustum-shaped structure in this embodiment.

The petiole sleeve 3 is of a cylindrical structure and is sleeved outside the annular groove 23 of the petiole 2 as shown in fig. 1; referring to fig. 3A-3B, the petiole sleeve 3 includes a first tube section 31 and a second tube section 32, in this embodiment, the inner surface of the second tube section 32 is a frustum tube structure, and the end surface of the second tube section 32 is further provided with 4 concave holes 321.

As shown in fig. 1, the wedge sleeve 5 is disposed between the annular groove 23 and the second barrel section 32, and the wedge sleeve 5, the annular groove 23 and the second barrel section 32 are mutually matched in shape, that is, in this embodiment, the wedge sleeve 5 is a frustum-cylindrical structure (as shown in fig. 4A).

The wedge sleeve 5 is formed, can be divided into blocks and then is arranged between the annular groove 23 of the blade shank 2 and the second section 32 of the bucket of the blade shank sleeve 3, and can be divided into blocks with different sizes according to different angles along the central axis of the wedge sleeve 5, as shown in fig. 4B, in the embodiment, the wedge sleeve 5 is divided into 6 blocks with different sizes according to different angles along the central axis (shown by dotted lines in the figure) of the wedge sleeve 5, so that the later-stage disassembly and maintenance operation is facilitated.

As shown in fig. 1 and 5, the pressure plate 6 is a circular plate-shaped structure, and is sleeved outside the second handle end 22 of the

blade handle

2, 4 first through holes 61 matched with the concave holes 321 on the second barrel section 32 are arranged on the plate surface of the pressure plate, the pressure plate 6 and the blade handle sleeve 3 are fastened together by first fasteners B penetrating through the first through holes 61 and the concave holes 321, and then the wedge sleeve 5 is pressed between the blade handle 2 and the blade handle sleeve 3, so that the wedge sleeve cannot fall off when the blade installation angle is adjusted. The first fastener B is preferably a cylindrical socket head cap screw, the through hole and the concave hole are threaded holes matched with the through hole, and a spring pad can be added between the screw and the threaded holes, so that all structures are stressed uniformly and connected more firmly and stably.

As shown in fig. 1 and fig. 2A-2B, the petiole disc 4 is also a circular plate-shaped structure, and is sleeved outside the first handle end 21 of the petiole 2; in this embodiment, 4 second through holes 41 are provided on the plate surface of the petiole disk 4, and the petiole disk 4 is fastened to the end surface of the first barrel section 31 of the petiole sleeve by the second fastening member a passing through the second through holes 41. The second fastener A is preferably a socket head cap screw, and the through hole is a threaded hole matched with the through hole.

In addition, as shown in fig. 2B, the outer surface of the petiole disk 4 is further provided with 2 symmetrical third through holes 42, and the opening axis of the third through holes 42 is preferably perpendicular to the outer surface of the petiole 2; the shank disk 4 is fastened to the outer surface of the shank first end 21 of the shank 2 by a third fastener C passing through the third through hole 42. The third fastener C is preferably a slotted taper end positioning screw, and meanwhile, the petiole 2 and the petiole disc 4 need to be in interference fit and coated with a sealing glue.

As shown in fig. 1, a distance L1 between an end surface of the petiole disk 4 facing away from the blade 1 and the first section 31 of the barrel of the petiole sleeve 3 is 4-8 mm, a certain space is reserved for the second fastening piece a, and meanwhile, the second fastening piece a can be tightly pressed against the end surface of the petiole sleeve 3.

As shown in fig. 3A-3B, the outer end side of the first barrel section 31 of the blade shank sleeve 3 is further provided with a 5mm wide annular recess 311 to facilitate insertion of the first barrel end 31 of the blade shank sleeve 3 into the hole of the hub plate 8 (as shown in fig. 1) and then securing the blade shank sleeve 3 to the drum plate 8.

Referring to fig. 1, the distance L2 between the root of the blade 1 and the hub panel 8 is 6-7 mm, so that the blade and the blade handle can rotate freely when the installation angle of the blade is adjusted.

As shown in the figure, the axial-flow fan in this embodiment is provided with a hub radial plate 7, the hub radial plate 7 is a circular plate-shaped structure, a groove 71 for accommodating the blade stem sleeve 3 is formed on an outer circumferential edge of the hub radial plate 7, and an outer cylindrical wall of the blade stem sleeve 3 is fixedly connected with the hub radial plate 7, for example, by welding. Meanwhile, the distance L3 between the bottom end of the groove 71 and the end face of the second end 22 of the blade handle 2 is 30mm, so that a certain operating space is reserved for the disassembly of the blade handle.

The utility model discloses blade installation angle outer adjusting device's theory of operation: loosening the second fastener A on the petiole disc 4 to rotate the blade 1 and the petiole 2 to the angle position to be adjusted; meanwhile, the wedge sleeve 5 is in a frustum cylinder shape and is pressed between the annular groove 23 of the blade handle 2 and the blade handle sleeve 3 by using the pressure plate 6, so that the blade handle 2 can only rotate around the axial direction and cannot move back and forth along the axial direction; after the blade 1, the petiole 2 and the petiole disk 4 are rotated to the angle position to be adjusted, the second fastener A is screwed down, the petiole disk 4 is fixed on the petiole sleeve 3, and the blade 1 and the petiole 2 are further fixed.

Claims

1. The external adjusting device for the mounting angle of the cast aluminum alloy blade of the axial-flow ventilator comprises a blade (1), a blade handle (2), a blade handle sleeve (3) and a hub panel (8), wherein the blade (1) is connected with the blade handle (2), and the blade handle sleeve (3) is fixedly connected with the hub panel (8); the method is characterized in that:

the blade handle (2) is of a cylindrical structure and comprises a first handle end (21) and a second handle end (22) which are opposite, the first handle end (21) is one end connected with the blade (1), and an annular groove (23) is formed in the outer surface of the middle of the blade handle (2);

the petiole sleeve (3) is of a cylindrical structure and is sleeved outside the annular groove (23); the petiole sleeve (3) comprises a first barrel section (31) and a second barrel section (32), and a concave hole (321) is formed in the end face of the second barrel section (32);

further comprising:

the wedge sleeve (5) is arranged between the annular groove (23) and the second barrel section (32), and the shapes of the wedge sleeve (5), the annular groove (23) and the second barrel section (32) are matched with each other;

the pressure plate (6) is of a circular plate-shaped structure, is sleeved outside the second handle end (22) of the blade handle, is provided with a first through hole (61) matched with the concave hole (321) on the surface, and is connected with the blade handle sleeve (3) through a first fastener (B) penetrating through the first through hole (61) and the concave hole (321);

the petiole disc (4), the said petiole disc (4) is the structure of circular ring platelike, it is located outside the first end (21) of said petiole of cover; a second through hole (41) is formed in the plate surface of the petiole disc (4), and the petiole disc (4) is fastened on the end surface of the first barrel section (31) of the petiole sleeve through a second fastening piece (A) penetrating through the second through hole (41); the outer surface of the petiole disc (4) is provided with a third through hole (42), and the petiole disc (4) is fastened on the petiole (2) through a third fastening piece (C) penetrating through the third through hole (42).

2. The external adjusting device for the mounting angle of the cast aluminum alloy blade of the axial flow fan as claimed in claim 1, wherein the portion of the annular groove (23) close to the second end (22) of the handle is a frustum-shaped structure (231), the inner surface of the second section (32) of the barrel is a frustum-shaped structure, and the wedge sleeve (5) is a frustum-shaped structure.

3. The external blade mounting angle adjusting device for an axial-flow fan cast aluminum alloy blade according to claim 1 or 2, characterized in that the wedge sleeve (5) is block-mounted between the annular groove (23) and the second barrel section (32).

4. The external adjusting device for the mounting angle of the cast aluminum alloy blade of the axial flow fan as claimed in claim 3, wherein the wedge sleeve (5) is divided into blocks of different sizes at different angles along the central axis thereof.

5. The cast aluminum alloy blade mounting angle outer adjustment device for an axial flow fan according to claim 1, wherein the third fastening member (C) is a slotted cone-end set screw.

6. The outer adjusting device for the mounting angle of the cast aluminum alloy blade of the axial flow fan as claimed in claim 1, wherein the distance (L1) between the end face of the petiole disc (4) facing away from the blade (1) and the first section (31) of the barrel is 4-8 mm.

7. The cast aluminum alloy blade mounting angle outer adjustment device for an axial flow ventilator according to claim 1, characterized in that the outer end side of the barrel first section (31) of the blade shank sleeve is provided with an annular recess (311) 5mm wide.

8. The outer adjusting device for the mounting angle of the cast aluminum alloy blade of an axial flow fan as claimed in claim 1, wherein the distance (L2) between the root of the blade (1) and the hub panel (8) is 6-7 mm.

9. The external adjusting device for the mounting angle of the cast aluminum alloy blade of the axial flow fan as claimed in claim 1, wherein the axial flow fan is provided with a hub web (7), the hub web (7) is of a circular ring plate-shaped structure, the outer circular edge of the hub web is provided with a groove (71) for accommodating the blade handle sleeve (3), and the outer cylindrical wall of the blade handle sleeve (3) is fixedly connected with the hub web (7).

10. The cast aluminum alloy blade installation angle outer adjustment device of an axial flow fan as claimed in claim 9, wherein a distance (L3) between a bottom end of the groove (71) and an end surface of the shank second end (22) of the blade shank is 30 mm.