CN217020221U - Special frock of dismantling of fan bearing - Google Patents

Abstract

A special disassembling tool for a fan bearing comprises a jackscrew, a movable disc and four groups of drawing assemblies; one end of the jackscrew is provided with an external thread; a threaded through hole matched with the jackscrew is formed in the center of the movable disc; the four groups of drawing assemblies are annularly distributed on the outer circumference of the movable disc and correspond to the four bolt holes in the bearing sleeve to be disassembled one by one; each group of drawing assemblies comprises a pull rod, an upper pull arm and a lower pull arm group, each lower pull arm group consists of a plurality of lower pull arms, and the internal thread hole of each lower pull arm is provided with a corresponding fastening bolt which is in threaded connection with the bolt hole on the corresponding bearing sleeve to be disassembled; the upper end of the pull rod is hinged with an upper pull arm fixed on the movable disc, and the lower end of the pull rod is hinged with one lower pull arm of the lower pull arm group. Convenient and fast promotes and dismantles efficiency.

Description

Special frock of dismantling of fan bearing

Technical Field

The utility model relates to the technical field of equipment maintenance of sewage treatment plants, in particular to a special dismounting tool for a fan bearing.

Background

In the equipment maintenance process of the sewage treatment plant in the villages and towns, the fan is frequently required to be disassembled, maintained and maintained. In the process, the bearing on the fan shaft needs to be disassembled, and the bearing on the fan shaft is disassembled for repairing the fan shaft after the bearing is disassembled; on the other hand, the bearing can be reused after being cleaned. In the prior art, a special bearing dismounting and drawing device is provided, but most of the drawing devices provide a drawing claw or a chuck to directly grab an outer ring of a bearing to be dismounted, and then apply force to pull down the bearing; however, in the actual production process, the pull claw or chuck of the conventional puller is large in size in order to ensure the strength, but after the actual bearing is installed in place, the distance between the fan bearing and the fan blade is small, and only a few millimeters clearance is formed probably, so that no operation clearance exists, and the puller cannot be used at all.

Therefore, at present, the end cover of the fan is manually disassembled on site, and then the bearing sleeve is violently disassembled by using a straight crane, an iron hammer, a thin steel plate and the like. However, in this way, the working area is often insufficient, the working gap is too small, and no matter whether the bearing is good or bad, the condition that the bearing sleeve is damaged occurs sometimes in the violent dismantling process, and unnecessary waste is generated.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides the special disassembling tool for the fan bearing, which is convenient and quick and improves the disassembling efficiency.

A special disassembling tool for a fan bearing comprises a jackscrew, a movable disc and four groups of drawing assemblies;

one end of the jackscrew is provided with an external thread;

a threaded through hole matched with the jackscrew is formed in the center of the movable disc;

the four groups of drawing assemblies are annularly distributed on the outer circumference of the movable disc and correspond to the four bolt holes in the bearing sleeve to be disassembled one by one;

each group of drawing assemblies comprises a pull rod, an upper pull arm and a lower pull arm group, each lower pull arm group consists of a plurality of lower pull arms, and the internal thread hole of each lower pull arm is provided with a corresponding fastening bolt which is in threaded connection with the bolt hole on the corresponding bearing sleeve to be disassembled;

the upper end of the pull rod is hinged with an upper pull arm fixed on the movable disc, and the lower end of the pull rod is hinged with one lower pull arm of the lower pull arm group.

One end of the pull-up arm is fixedly connected with the movable disc, and the other end of the pull-up arm scatters outwards along the horizontal direction.

Four holes of stepping down of removal dish periphery equipartition, go up the single end of single arm-drag and establish the screw hole, the bolt passes and corresponds the hole of stepping down and goes up the screw hole on the single arm-drag and will go up single arm-drag and removal dish fixed connection.

The movable disc and the jackscrew are coaxially arranged.

The pull-down arm groups are characterized in that the pull-down arms of the pull-down arm groups are identical in appearance structure, and internal threaded holes with different inner diameters are formed in the end parts of the pull-down arms.

The axes of the fastening bolts on the four lower pull arms are positioned on the same circle.

The other end of the jackscrew is connected with a driving device.

The driving device is an electric motor or a hydraulic motor.

Compared with the prior art, the fan bearing sleeve structure has the advantages that the problem of insufficient gap between the bearing sleeve and the fan blade is solved by observing the structure of the fan bearing sleeve, utilizing the screw hole positions positioned by the bearing sleeve and adopting the screw connection structure. And the pulling claw is connected by a moving part, so that corresponding accessories can be replaced according to different bearing sleeves to adapt to the bearing sleeves with different sizes.

Drawings

FIG. 1 is a schematic diagram of a state one embodiment of the present invention;

in the figure: 1. jackscrew, 2, removal dish, 3, draw the subassembly, 4, pull rod, 5, upper pull arm, 6, lower pull arm, 7, fastening bolt.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in fig. 1, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.

In fig. 1, the outside of jackscrew 1 has the external screw thread, it is equipped with the screw through-hole to remove 2 middle parts of dish, jackscrew 1 wears to establish in the screw through-hole at removal 2 middle parts, jackscrew 1 sets up with removal dish 2 coaxial line, rotatory jackscrew 1 can make and remove the axis direction motion of dish 2 along jackscrew 1, jackscrew 1 can realize rotary motion through artifical manual, perhaps 1 tip of jackscrew and hydraulic motor or electric motor output shaft pass through the coupling joint, it is rotatory through hydraulic motor or electric motor drive, time saving and labor saving. Move 2 even ring cloth four of periphery of dish and be used for connecting the bearing housing draw subassembly 3, draw subassembly 3 including last single arm-drag 5, pull rod 4 and lower single arm-drag group, go up single arm-drag 5 level and fix on the outer circumference of removal dish 2, its inner end portion and removal dish 2 fixed connection, outer tip outwards penetrates in the opposite direction to the 2 centre of a circle of removal dish, lower single arm-drag group comprises a plurality of single arm-drag 6 down, a plurality of single arm-drag 6 structure size homogeneous phases of single arm-drag of lower single arm-drag group are the cuboid board, hinge hole one has been seted up to every single arm-drag 6 one end, the internal thread hole aperture that every single arm-drag 6 tip was seted up is different, be equipped with corresponding fastening bolt 7 in the internal thread hole of every single arm-drag 6, behind fastening bolt 7 and the bolt hole threaded connection of waiting to dismantle the bearing housing, it is fixed with waiting to dismantle the single arm-drag 6 and wait to dismantle the bearing housing connection. After the inner diameter of the bolt hole in the bearing sleeve to be disassembled is changed, the universality of the tool can be improved by replacing the lower pull arm 6 and the fastening bolt 7 with corresponding sizes, and the axes of the fastening bolts 7 on the four lower pull arms 6 are positioned on the same circle. The upper end part of the pull rod 4 is hinged with the outer end of the upper pull arm 5, two hinge holes II are arranged on two side walls of a groove in the lower end part of the pull rod 4, and the lower end part of the pull rod 4 is mutually connected with one of the lower pull arms 6 through hinge shafts which are arranged in the corresponding hinge holes I and hinge holes II in a penetrating manner. The pull-down arm 6 and the pull-up arm 5 are connected into a whole through the pull rod 4.

Four holes of stepping down of removal dish 2 periphery equipartition, the screw hole is established to 5 one ends of last single arm-drag, and the bolt passes and corresponds the hole of stepping down and go up the screw hole on the single arm-drag 5 with last single arm-drag 5 and remove dish 2 fixed connection.

In another embodiment, when the outer diameter of the bearing sleeve to be disassembled becomes larger, the pull rod 4 can be rotated and opened along the hinge shaft between the pull rod 4 and the upper pull arm 5, and the lower pull arm 6 can be rotated to be in a horizontal state along the hinge shaft between the pull rod 4, so that the bearing sleeve to be disassembled in different sizes can be adapted, and the application range is wide.

During the use, according to the bolt hole aperture size of waiting to dismantle the bearing housing, select suitable lower pull arm 6 and the fastening bolt 7 that corresponds, then be connected the lower pull arm 6 of selecting with pull rod 4 through the articulated shaft, then with the fastening bolt 7 on four pull arms 6 with wait to dismantle the bearing housing and having sheathe the bolt hole and correspond and be connected, make and wait to dismantle the bearing housing, four draw subassembly 3 and removal dish 2 and connect into a fixed whole, drive jackscrew 1 is rotatory at last, make and remove dish 2 along jackscrew 1 axial displacement, realize the dismantlement of bearing housing, adopt the screwed connection structure, solve the bearing housing and flabellum not enough problem in clearance.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (8)

1. The utility model provides a frock is dismantled in fan bearing special use which characterized in that: comprises a jackscrew (1), a movable disc (2) and four groups of drawing components (3);

one end of the jackscrew (1) is provided with an external thread;

the center of the movable disc (2) is provided with a threaded through hole which is matched and installed with the jackscrew (1);

the four groups of drawing assemblies (3) are annularly distributed on the outer circumference of the movable disc (2), and the four groups of drawing assemblies (3) correspond to the four bolt holes on the bearing sleeve to be disassembled one by one;

each group of drawing assemblies (3) comprises a pull rod (4), an upper pull arm (5) and a lower pull arm group, each lower pull arm group consists of a plurality of lower pull arms (6), a corresponding fastening bolt (7) is installed in an inner threaded hole of each lower pull arm (6), and the fastening bolts (7) are in threaded connection with corresponding bolt holes in the bearing sleeves to be disassembled;

the upper end of the pull rod (4) is hinged with an upper pull arm (5) fixed on the movable disc (2), and the lower end of the pull rod (4) is hinged with one lower pull arm (6) of the lower pull arm group.

2. The special frock of dismantling of fan bearing of claim 1, its characterized in that: one end of the upper pull arm (5) is fixedly connected with the movable disc (2), and the other end of the upper pull arm scatters outwards along the horizontal direction.

3. The special dismounting tool for the fan bearing according to claim 1 or 2, characterized in that: four holes of stepping down of removal dish (2) periphery equipartition, go up single arm-drag (5) one end and establish the screw hole, the bolt passes and corresponds the hole of stepping down and goes up the screw hole on single arm-drag (5) with single arm-drag (5) and removal dish (2) fixed connection.

4. The special frock of dismantling of fan bearing of claim 3, characterized in that: the movable disc (2) and the jackscrew (1) are coaxially arranged.

5. The special frock of dismantling of fan bearing of claim 1, its characterized in that: the shape structures of a plurality of pull-down arms (6) of the pull-down arm group are the same, and the end parts of the pull-down arms (6) are provided with internal thread holes with different internal diameters.

6. The special frock of dismantling of fan bearing of claim 1 or 5, characterized in that: the axes of the fastening bolts (7) on the four pull-down arms (6) are positioned on the same circle.

7. The special frock of dismantling of fan bearing of claim 1, its characterized in that: the other end of the jackscrew (1) is connected with a driving device.

8. The special frock of dismantling of fan bearing of claim 7, characterized in that: the driving device is an electric motor or a hydraulic motor.

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