CN211940749U - Fan impeller puller with positioner - Google Patents

Abstract

The utility model discloses a fan impeller puller with a positioner, which comprises a puller base, a lead screw and a pull rod, wherein the central position of the puller base is provided with a threaded hole matched with the lead screw, the bottom end of the lead screw is provided with a top head, two ends of the puller base are symmetrically provided with U-shaped grooves matched with the pull rod, and the puller also comprises a positioner matched with the top head; the locator include the axle sleeve, the lower extreme of axle sleeve is equipped with powerful magnet, is equipped with flat bearing and rotator in the axle sleeve, the axial region and the flat bearing activity of rotator are fixed, the afterbody of rotator is equipped with the recess that matches with the top. The utility model discloses can be applicable to the fan wheel of different motor spindle diameters, improve work efficiency, reduce the damage of axle head screw thread.

Description

Fan impeller puller with positioner

Technical Field

The utility model belongs to the technical field of mechanical maintenance tool, especially, relate to a fan wheel draws horse with locator.

Background

In the tobacco industry, a large number of fans are applied to devices such as a leaf wetting machine, an on-site winnowing machine, a charging machine and SH93(HDT) on-line expansion in a workshop.

The fan impeller is arranged on the motor shaft, the space is narrow when the impeller is disassembled and assembled in the fan volute, no proper disassembling and assembling tool is provided, and the impeller can only be disassembled and assembled by using a usual three-jaw puller or a common fan puller.

For example, chinese patent publication No. CN201300395Y discloses a special puller for a fan impeller, which includes a lead screw, a top is provided at the bottom end of the lead screw, a nut is provided on the lead screw, the nut is connected to a disk, a through hole is provided on the disk, a bolt is provided in the through hole, and a limit nut is provided on the bolt. The nut is connected with the disc in a welding mode. The number of the through holes is 2-4, bolts are arranged in each through hole, and limit nuts are arranged on each bolt.

When the existing puller is used for disassembling the fan impeller, the impeller and the motor spindle are prevented from moving axially through a blank cap and a screw, and the puller is considered to be used for positioning and disassembling the impeller through a cushion nut or a small hexagon socket head cap screw arranged in the screw. Therefore, the following problems are caused during the assembling and disassembling process:

(1) if the inner hexagon bolt is placed in the motor spindle for positioning, the problem that the inner hexagon bolt needs to be repeatedly selected and replaced exists because the diameters of the blind bolts used in different types of the motor spindle are different. In addition, during the disassembly process, the inner threads of the shaft end can be damaged by the inner hexagonal bolt.

(2) If the cushion nut is adopted for positioning, the nut is placed between the shaft end and the top of the puller ejector rod, the space for hand operation is narrow, the operation is inconvenient, and the working efficiency is low.

(3) No matter what method is adopted at present, the top of the puller ejector rod is in frictional contact with the nut or the hexagon socket head cap screw, the friction force is large, a part of rotary shearing force is counteracted, and the working strength is increased.

SUMMERY OF THE UTILITY MODEL

For solving the problem that prior art exists, the utility model provides a fan wheel draws horse with locator can be applicable to the fan wheel of different motor spindle diameters, improves work efficiency, reduces the damage of axle head screw thread.

The technical scheme of the utility model as follows:

a fan impeller puller with a positioner comprises a puller base, a screw rod and a pull rod, wherein a threaded hole matched with the screw rod is formed in the center of the puller base, a top is arranged at the bottom end of the screw rod, U-shaped grooves matched with the pull rod are symmetrically formed in two ends of the puller base, and the puller also comprises a positioner matched with the top;

the locator include the axle sleeve, the lower extreme of axle sleeve is equipped with powerful magnet, is equipped with flat bearing and rotator in the axle sleeve, the axial region and the flat bearing activity of rotator are fixed, the afterbody of rotator is equipped with the recess that matches with the top.

The utility model discloses when using, adsorb the locator on motor spindle terminal surface through powerful magnet for the top of lead screw is used in on the locator, and not direct action is on motor spindle, thereby has eliminated and has damaged internal screw thread hidden danger on the motor spindle.

In order to enable the puller base to be suitable for fan impellers of different specifications, the groove length of the U-shaped groove is 50-200 mm.

In order to limit the position play of the rotating body and the plane bearing, a shaft collar is arranged on the inner wall of the shaft sleeve at a position close to the tail part of the rotating body.

In order to facilitate an operator to screw the screw rod by using a wrench, a hexagonal boss is arranged at the top end of the screw rod.

The top of the screw rod is conical, and the conical degree is forty-five degrees.

The powerful magnet is coaxial with the shaft sleeve.

Through adsorbing this locator on motor spindle end face, the top of drawing the horse lead screw is acted on the recess of rotator, realizes the location simultaneously and reduces the consumption of rotatory shearing force.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model is suitable for a fan wheel of different motor spindle diameters realizes that one set of fan wheel that has the locator draws the impeller that the horse can satisfy different equipment in the workshop and dismantles.

2. The utility model discloses a powerful magnet adsorbs the locator on the motor spindle terminal surface, has eliminated the internal screw thread hidden danger on damaging the motor spindle.

Drawings

Fig. 1 is a schematic structural view of a fan impeller puller with a positioner according to the present invention;

fig. 2 is a schematic structural view of the middle puller base of the present invention;

fig. 3 is a schematic structural diagram of the middle positioning device of the present invention.

In the figure: the device comprises a base 1, a threaded hole 2, a 3-U-shaped groove, a 4-screw rod, a 5-hexagonal boss, a 6-top head, a 7-pull rod, an 8-positioner, an 81-shaft sleeve, an 82-powerful magnet, an 83-plane bearing, an 84-rotator and an 85-shaft retainer ring.

Detailed Description

The invention will be described in further detail with reference to the following figures and examples, which are intended to facilitate the understanding of the invention without limiting it.

As shown in fig. 1-2, a fan impeller puller with a positioner comprises a puller base 1, a screw rod 4 and a pull rod 7, wherein a threaded hole 2 matched with the screw rod 4 is formed in the center of the puller base 1; the bottom end of the screw rod 4 is provided with a top head 6, and the top end of the screw rod 4 is provided with a hexagonal boss 5; two ends of the puller base 1 are symmetrically provided with U-shaped grooves 3 matched with the pull rod 7; and a locator 8 matched with the plug 6.

As shown in fig. 3, the positioner 8 includes a shaft sleeve 81, a strong magnet 82 is provided at a lower end of the shaft sleeve 81, and a flat bearing 83 and a rotating body 84 are provided in the shaft sleeve 81. Wherein, the shaft part of the rotating body 84 is movably fixed with the plane bearing 83, and the tail part of the rotating body 84 is provided with a groove matched with the top head 6.

In order to restrict the positional play of the rotating body 84 and the flat bearing 83, a shaft retainer 85 is provided on the inner wall of the sleeve 81 at a position close to the rear of the rotating body 84.

When the positioning device is used, the positioner 8 is firstly adsorbed on the end face of the motor spindle, the top head 4 of the screw rod 1 passes through the threaded hole 2 and then acts on the groove at the tail part of the rotating body 84, and the pull rod 7 passes through the U-shaped groove 3 and then is fixed with the fan impeller.

The utility model can be applied to fan impellers with different motor main shaft diameters, and realizes that a set of fan impeller puller with a positioner 8 can meet the requirement of impeller dismounting of different devices in a workshop; the positioner 8 is adsorbed on the end face of the motor spindle through the powerful magnet 82, the top 6 acts on the rotating body 84, and meanwhile, the positioning and the consumption of the rotating shearing force are realized, so that the hidden trouble of damaging the internal thread on the motor spindle is eliminated.

The above-mentioned embodiment is to the technical solution and the beneficial effects of the present invention have been described in detail, it should be understood that the above is only the specific embodiment of the present invention, not used for limiting the present invention, any modification, supplement and equivalent replacement made within the principle scope of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A fan impeller puller with a positioner comprises a puller base, a screw rod and a pull rod, wherein a threaded hole matched with the screw rod is formed in the center of the puller base;

the locator include the axle sleeve, the lower extreme of axle sleeve is equipped with powerful magnet, is equipped with flat bearing and rotator in the axle sleeve, the axial region and the flat bearing activity of rotator are fixed, the afterbody of rotator is equipped with the recess that matches with the top.

2. The fan impeller puller with the positioner as recited in claim 1, wherein the U-shaped groove has a groove length of 50-200 mm.

3. The fan impeller puller with the locator according to claim 1, wherein the inner wall of the bushing is provided with a shaft collar near the tail of the rotating body.

4. The fan impeller puller with the positioner as recited in claim 1, wherein a hexagonal boss is provided at a top end of the screw rod.

5. The fan impeller puller with the positioner as recited in claim 1, wherein the top of the lead screw is tapered with a taper of forty-five degrees.

6. The fan impeller puller with the locator according to claim 1, wherein the powerful magnet is coaxial with the bushing.

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