Dismounting device for fan blades of counter-rotating fan

Abstract

The utility model provides a counter-rotating fan blade dismounting device, which relates to the technical field of fan tools, and comprises a screw rod, a handle rod and a disc, the handle rod is arranged at the lower end of the screw rod, the upper end of the screw rod penetrates through the middle position of the disc, the screw rod is in threaded fit with the middle position of the disc, and the handle rod is arranged at the lower end of the screw rod. Positioning grooves are formed in the two sides of the interior of the disc, and the positioning grooves penetrate through the disc; the positioning groove in the disc is matched with the positioning bolt to install the disc and a fan blade needing to be detached, the installation position of the positioning bolt in the positioning groove is adjusted according to a hole in the fan blade, the end of the lead screw abuts against a shaft of a counter-rotating fan, the steel rod is inserted into the feeding hole to rotate, the lead screw is driven to rotate, and the thread feeding amount is increased. Therefore, the fan blade and the shaft are separated, the dismounting effect with half the effort is achieved, the problem that dismounting cannot be achieved in the past is solved, manufacturing is easy, working efficiency is improved, labor time is saved, and safe production is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fan tools, in particular to a disassembly device for counter-rotating fan blades. Background Art

[0002] A counter-rotating fan is a fan installed underground or on the ground to supply air to the entire mine, a wing or a sub-mining area. It is commonly known as a main fan. It is widely used in mining, tunnels and ships, especially in mines. It can be used to extract air, achieve ventilation, and supply air to improve the working environment.

[0003] The counter-rotating fan is mainly composed of two counter-rotating propellers (impellers). Each propeller is equipped with multiple blades. The shape and angle of the blades can be different to achieve different air volumes and pressures. There is a sealing ring between the propellers to prevent air from leaking out from between the two propellers. It adopts a two-stage impeller counter-rotating structure. The two-stage impellers are driven by motors of the same capacity and model respectively.

[0004] The mine maintenance workshop overhauls a large number of cyclone fans every month. According to the maintenance requirements, the equipment to be repaired must be disassembled into the smallest unit. When repairing the cyclone fans, it is inconvenient to disassemble the blades for maintenance due to the large size of the blades and the small gap between the blades and the casing. Therefore, the utility model proposes a disassembly device for the blades of the cyclone fan to solve the problems existing in the prior art. Utility Model Content

[0005] In view of the above problems, the utility model proposes a disassembly device for cyclone fan blades, which achieves twice the result with half the effort, solves the problem that the disassembly was previously impossible, is simple to manufacture, improves work efficiency, saves labor time, and ensures safe production.

[0006] To achieve the purpose of the utility model, the utility model is implemented by the following technical solutions: a disassembly device for a cyclonic fan blade, comprising a screw rod, a handle rod and a disc, wherein the handle rod is arranged at the lower end of the screw rod, the upper end of the screw rod passes through the middle position of the disc, the screw rod is threadedly adapted to the middle position of the disc, and positioning grooves are arranged on both sides of the inside of the disc, and the positioning grooves pass through the disc;

[0007] A feed hole is provided at the lower part of the handle bar, and the feed hole passes through the handle bar.

[0008] A further improvement is that a nut sleeve is provided at the middle position inside the disc, and the nut sleeve is welded and fixed to the disc, and the external thread of the screw rod is matched with the internal thread of the nut sleeve.

[0009] A further improvement is that the positioning grooves on both sides are used to install positioning bolts, and one end of the positioning bolt passes through the positioning groove, and one end of the positioning bolt is used to be fixed to the fan blade thread of the counter-rotating fan.

[0010] A further improvement is that the feed hole is used to insert a steel rod, and the steel rod is used to be hand-held and rotated to drive the handle rod and the screw rod to rotate.

[0011] A further improvement is that a recessed groove is provided on the top of the screw rod, and the interior of the recessed groove is filled with a rubber pad, and the rubber pad is bonded and fixed to the recessed groove by a self-adhesive adhesive.

[0012] A further improvement is that the diameter of the handle rod is larger than that of the screw rod, the lower end of the screw rod penetrates into the interior of the handle rod, the screw rod and the handle rod are fixed by welding, and the connection between the screw rod and the handle rod is filled with reinforcing ribs.

[0013] A further improvement is that the top surface of the disc is a smooth surface, and the smooth surface is coated with an anti-rust layer.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model installs the disc and the fan blade to be disassembled through the positioning groove on the disc and the positioning bolt, adjusts the installation position of the positioning bolt on the positioning groove according to the hole on the fan blade, supports the shaft of the counter-rotating fan through the end of the screw rod, inserts the steel rod into the feed hole and rotates, drives the screw rod to rotate and increase the thread feed amount, thereby separating the fan blade and the shaft, achieving a disassembly effect with half the effort, solving the problem that the disassembly could not be done in the past, and is simple to make, improves work efficiency, saves labor time, and ensures safe production.

[0016] 2. The utility model fills a rubber pad in the top recessed groove of the screw rod to contact the shaft of the counter-cyclone fan, reducing the wear on the shaft of the counter-cyclone fan. The top surface of the disc is smooth and coated with an anti-rust layer, so that there is no raised rust on the contact surface with the fan blade, avoiding the wear on the fan blade and making it more reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 It is a schematic diagram of a disc of the utility model;

[0019] Figure 3 It is a schematic diagram of the screw rod and the handle rod of the utility model.

[0020] Among them: 1. Screw rod; 2. Handle rod; 3. Disc; 4. Positioning groove; 5. Feed hole; 6. Nut sleeve; 7. Positioning bolt; 8. Steel rod; 9. Rubber pad; 10. Reinforcement rib. DETAILED DESCRIPTION

[0021] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0022] Embodiment 1

[0023] according to Figure 1 , 2 As shown in FIG. 3 , this embodiment proposes a disassembly device for a cyclonic fan blade, comprising a screw rod 1, a handle rod 2 and a disc 3, wherein the handle rod 2 is arranged at the lower end of the screw rod 1, the upper end of the screw rod 1 passes through the middle position of the disc 3, the screw rod 1 is threadedly adapted to the middle position of the disc 3, and positioning grooves 4 are arranged on both sides of the inside of the disc 3, and the positioning grooves 4 pass through the disc 3;

[0024] A feed hole 5 is provided at the lower part of the handle bar 2, and the feed hole 5 penetrates the handle bar 2. When in use, the disc 3 is mounted on the fan blade to be removed through the positioning groove 4 on the disc 3 in conjunction with the positioning bolt 7, and the mounting position of the positioning bolt 7 on the positioning groove 4 is adjusted according to the hole on the fan blade. The end of the screw rod 1 is supported against the shaft of the counter-rotating fan, and the steel rod 8 is inserted into the feed hole 5 and rotated, driving the screw rod 1 to rotate and increase the thread feed amount, thereby separating the fan blade from the shaft.

[0025] A nut sleeve 6 is provided at the middle position inside the disc 3, and the nut sleeve 6 is welded and fixed to the disc 3, and the external thread of the screw rod 1 is matched with the internal thread of the nut sleeve 6. By using the matching effect of the external thread of the screw rod 1 and the internal thread of the nut sleeve 6, when the screw rod 1 rotates, the thread feed can be performed, and the end of the screw rod 1 supports the shaft of the counter-rotating fan, and the fan blade and the disc 3 are fixed, thereby separating the fan blade and the shaft.

[0026] The positioning grooves 4 on both sides are used to install positioning bolts 7, and one end of the positioning bolts 7 passes through the positioning grooves 4, and one end of the positioning bolts 7 is used to be threadedly fixed to the fan blades of the counter-rotating fan. When in use, the positioning grooves 4 on the disc 3 are used to match the positioning bolts 7 to install the disc 3 and the fan blades to be removed, and the installation position of the positioning bolts 7 on the positioning grooves 4 is adjusted according to the holes on the fan blades.

[0027] The feed hole 5 is used to insert a steel rod 8, and the steel rod 8 is used to rotate by hand to drive the handle rod 2 and the screw rod 1 to rotate. When in use, the installation position of the positioning bolt 7 on the positioning groove 4 is adjusted according to the hole on the fan blade, the end of the screw rod 1 is used to support the shaft of the counter-rotating fan, and the steel rod 8 is inserted into the feed hole 5 and rotated, driving the screw rod 1 to rotate and increase the thread feed amount, thereby separating the fan blade and the shaft.

[0028] The diameter of the handle rod 2 is larger than that of the screw rod 1. The lower end of the screw rod 1 penetrates into the interior of the handle rod 2, and the screw rod 1 and the handle rod 2 are fixed by welding. The connection between the screw rod 1 and the handle rod 2 is filled with reinforcing ribs 10 to improve the strength of the connection. When the handle rod 2 is rotated, the screw rod 1 is driven to rotate, and the two are not easy to break.

[0029] Embodiment 2

[0030] according to Figure 1 , 2 As shown in FIG. 3 , this embodiment proposes a disassembly device for a cyclonic fan blade, comprising a screw rod 1, a handle rod 2 and a disc 3, wherein the handle rod 2 is arranged at the lower end of the screw rod 1, the upper end of the screw rod 1 passes through the middle position of the disc 3, the screw rod 1 is threadedly adapted to the middle position of the disc 3, and positioning grooves 4 are arranged on both sides of the inside of the disc 3, and the positioning grooves 4 pass through the disc 3;

[0031] A feed hole 5 is provided at the lower part of the handle bar 2, and the feed hole 5 penetrates the handle bar 2. When in use, the disc 3 is mounted on the fan blade to be removed through the positioning groove 4 on the disc 3 in conjunction with the positioning bolt 7, and the mounting position of the positioning bolt 7 on the positioning groove 4 is adjusted according to the hole on the fan blade. The end of the screw rod 1 is supported against the shaft of the counter-rotating fan, and the steel rod 8 is inserted into the feed hole 5 and rotated, driving the screw rod 1 to rotate and increase the thread feed amount, thereby separating the fan blade from the shaft.

[0032] The diameter of the handle rod 2 is larger than that of the screw rod 1. The lower end of the screw rod 1 penetrates into the interior of the handle rod 2, and the screw rod 1 and the handle rod 2 are fixed by welding. The connection between the screw rod 1 and the handle rod 2 is filled with reinforcing ribs 10 to improve the strength of the connection. When the handle rod 2 is rotated, the screw rod 1 is driven to rotate, and the two are not easy to break.

[0033] The top of the screw rod 1 is provided with a recessed groove, and the interior of the recessed groove is filled with a rubber pad 9, and the rubber pad 9 is bonded and fixed to the recessed groove by a self-adhesive adhesive. The top surface of the disc 3 is a smooth surface, and the smooth surface is coated with an anti-rust layer. The rubber pad 9 is filled in the recessed groove at the top of the screw rod 1 to contact the shaft of the counter-cyclone fan, reducing the wear on the shaft of the counter-cyclone fan. The top surface of the disc 3 is a smooth surface and coated with an anti-rust layer, so that there is no raised rust on the contact surface with the fan blade, avoiding wear on the fan blade, and more reliable use.

[0034] The disassembly device of the fan blades of the counter-cyclone fan is to install the disc 3 and the fan blades to be disassembled through the positioning groove 4 on the disc 3 and the positioning bolt 7, and adjust the installation position of the positioning bolt 7 on the positioning groove 4 according to the hole on the fan blade. The end of the screw rod 1 is used to support the shaft of the counter-cyclone fan, and the steel rod 8 is inserted into the feed hole 5 to rotate, which drives the screw rod 1 to rotate and increase the thread feed amount, thereby separating the fan blade and the shaft, achieving a disassembly effect with twice the result with half the effort, solving the problem that could not be disassembled in the past, and is simple to make, improves work efficiency, saves labor time, and ensures safe production. In addition, the top concave groove of the screw rod 1 is filled with a rubber pad 9 to contact the shaft of the counter-cyclone fan, reducing the wear on the shaft of the counter-cyclone fan. The top surface of the disc 3 is a smooth surface and coated with an anti-rust layer, so that there is no raised rust on the contact surface with the fan blade, avoiding wear on the fan blade, and making it more reliable to use.

[0035] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A device for disassembling a fan blade of a counter-rotating fan, comprising a screw rod (1), a handle rod (2) and a disc (3), characterized in that: The handle bar (2) is arranged at the lower end of the screw rod (1), the upper end of the screw rod (1) passes through the middle position of the disc (3), the screw rod (1) is threadedly adapted to the middle position of the disc (3), and positioning grooves (4) are provided on both sides of the inside of the disc (3), and the positioning grooves (4) pass through the disc (3); A feed hole (5) is provided at the lower part of the interior of the handle bar (2), and the feed hole (5) passes through the handle bar (2).

2. The device for disassembling the fan blades of a counter-rotating fan according to claim 1, characterized in that: A nut sleeve (6) is provided at a middle position inside the disc (3), and the nut sleeve (6) is fixed to the disc (3) by welding, and the external thread of the screw rod (1) is matched with the internal thread of the nut sleeve (6).

3. The device for disassembling the fan blades of a counter-rotating fan according to claim 1, characterized in that: The positioning grooves (4) on both sides are used to install positioning bolts (7), and one end of the positioning bolt (7) passes through the positioning groove (4), and one end of the positioning bolt (7) is used to be threadedly fixed to the fan blade of the counter-rotating fan.

4. The device for disassembling the fan blades of a counter-rotating fan according to claim 1, characterized in that: The feed hole (5) is used to penetrate and insert a steel rod (8), the steel rod (8) is inserted in parallel, and the steel rod (8) is used to be hand-held and rotated to drive the handle rod (2) and the screw rod (1) to rotate, thereby playing the role of a force rod.

5. The device for disassembling the fan blades of a counter-rotating fan according to claim 1, characterized in that: The top of the screw rod (1) is provided with a recessed groove, and the interior of the recessed groove is filled with a rubber pad (9), and the rubber pad (9) is bonded and fixed to the recessed groove by means of a self-adhesive adhesive.

6. The device for disassembling the blades of a counter-rotating fan according to claim 1, characterized in that: The diameter of the handle rod (2) is larger than that of the screw rod (1); the lower end of the screw rod (1) penetrates into the interior of the handle rod (2); the screw rod (1) and the handle rod (2) are fixed by welding; and the connection between the screw rod (1) and the handle rod (2) is filled with reinforcing ribs (10).

7. A device for disassembling a counter-rotating fan blade according to any one of claims 1 to 6, characterized in that: The top surface of the disc (3) is a smooth surface, and the smooth surface is coated with an anti-rust layer.

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