Fan impeller shaft dismounting device

Abstract

The fan impeller shaft dismounting device comprises a rack, hydraulic jack equipment and a pair of fixing arms, the rack comprises an upper mounting plate and a lower mounting plate, an ejection fixing plate is arranged between the upper mounting plate and the lower mounting plate, an ejection hole is formed in the ejection fixing plate, the pair of fixing arms is symmetrically arranged between the upper mounting plate and the lower mounting plate, and the hydraulic jack equipment is arranged on the upper mounting plate and the lower mounting plate. The pair of fixed arms are arranged on the ejector fixed plate and are detachably fixed on two sides of the ejector fixed plate, claw plates extending towards one side of the ejector fixed plate are arranged on the pair of fixed arms, bayonets matched with the outline of an impeller shaft sleeve and used for clamping the shaft sleeve are formed in the claw plates, and an ejector rod of the hydraulic jack equipment is arranged at the ejector fixed plate and axially reciprocates through an ejector hole. And the impeller shaft is ejected. Compared with a traditional scheme, the impeller shaft unloading device is safer and more efficient. And the adjustable structure of the fixed arm and the claw plate can adapt to the shaft sleeve diameters and axial lengths of different impellers, and adapt to the change of the diameters of the impellers through the rack lifting structure.

Description

Technical Field

[0001] The utility model relates to the technical field of fan impeller maintenance, in particular to a fan impeller shaft unloading device. Background Art

[0002] When repairing a fan, it is often necessary to remove the fan impeller from the impeller shaft. There are currently two methods of disassembly: 1. Heat the impeller to create a gap between the impeller sleeve and the impeller shaft, and then remove the impeller; 2. Use a puller to pull the axial flow fan impeller off the impeller shaft. The first method not only requires the cooperation of multiple people, but also easily leads to risks such as burns during the operation. The second method is difficult to install and the entire disassembly operation is time-consuming. Moreover, since the impeller has various diameters and sizes, there is no unified solution for the existing methods to fix and disassemble impellers of different sizes, which makes it difficult to deal with.

[0003] Therefore, it is necessary to design a device to assist the fan impeller in unloading the shaft, which is easy to operate, ensures the personal safety of the operator, and can cope with fan impellers of different sizes and specifications and perform adaptive structural adjustments. Utility Model Content

[0004] In order to solve the deficiencies of the above-mentioned technology, the utility model provides a fan impeller shaft unloading device.

[0005] The technical scheme of the utility model: a fan impeller shaft unloading device comprises a frame, a hydraulic jack device, and a pair of fixed arms, the frame comprises an upper mounting plate and a lower mounting plate, a ejection fixing plate is provided between the upper and lower mounting plates, and an ejection hole is provided on the ejection fixing plate, the pair of fixed arms are symmetrically arranged between the upper and lower mounting plates, and are detachably fixed to both sides of the ejection fixing plate, the pair of fixed arms are both provided with claw plates extending toward one side of the ejection fixing plate, the claw plates are provided with bayonet sockets that are adapted to the profile of the impeller shaft sleeve and clamp the shaft sleeve, the ejector rod of the hydraulic jack is arranged at the ejection fixing plate, and axially reciprocates through the ejection hole to eject the impeller shaft, and adopts the above technical scheme, the claw plates of a pair of fixed arms are used to clamp and fix the shaft sleeve of the fan impeller, and then the ejector rod of the hydraulic jack device is ejected from the ejection hole to eject the impeller shaft from the shaft sleeve, thereby replacing manual and traditional methods and completing the shaft unloading work more safely, simply and efficiently.

[0006] The utility model is further configured as follows: the pair of fixed arms are horizontally slidably matched between the upper and lower mounting plates, the upper and lower mounting plates are horizontally spaced with a plurality of first positioning holes, the pair of fixed arms are each provided with a second positioning screw hole, and the device is provided with bolts passing through the first positioning holes and the second positioning screw holes for fixing.

[0007] By adopting the above technical solution, the spacing is adjusted by sliding a pair of fixed arms to adapt to shaft sleeves of different diameters for clamping, and then the position of the fixed arms is fixed by bolts passing through the first positioning hole and the second positioning screw hole to complete the clamping work.

[0008] A further configuration of the utility model is that a lifting ring is provided on the fixed arm.

[0009] By adopting the above technical solution, the lifting ring on the fixed arm is hooked by a crane, so as to move the position of the fixed arm and eliminate manpower.

[0010] Further configuration of the utility model: the claw plate is provided with a slot whose contour is adapted to the cross-sectional contour of the fixed arm in the length direction, the slot is sleeved on the fixed arm for sliding fit in the length direction, a plurality of third positioning holes are arranged at intervals on the claw plate along the length direction of the fixed arm, a fourth positioning hole is arranged on the fixed arm, and the device also includes a pin, which passes through the third and fourth positioning holes to fix the claw plate and the fixed arm.

[0011] By adopting the above technical solution, the claw plate can adapt to different axial length specifications of the shaft sleeve and the impeller shaft through adjusting and fixing the length direction position of the claw plate, thereby completing the clamping work.

[0012] A further configuration of the utility model is as follows: a support foot is provided at the bottom of the frame, and the support foot supports the bottom of the frame to form a lifting gap.

[0013] By adopting the above technical solution and setting the lifting distance, when the impeller diameter is too large and touches the ground, a forklift can be used to insert into the lifting gap, lift the frame, or move the frame to a high platform position to adapt to the large diameter of the impeller.

[0014] The utility model has the following beneficial effects: the impeller sleeve can be fixed by the shaft unloading device, and the impeller shaft can be ejected by the hydraulic jack device to complete the shaft unloading work, which is safer and more efficient than the traditional solution. Moreover, the adjustable structure of the fixed arm and the claw plate can adapt to the sleeve diameter and axial length of different impellers, and the frame lifting structure can adapt to the change of the impeller diameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The structure of the embodiment of the utility model Figure 1 ;

[0016] Figure 2 The structure of the embodiment of the utility model Figure 2 .

[0017] The numbers in the accompanying drawings are: 1-frame, 11-upper mounting plate, 12-lower mounting plate, 13-ejection fixing plate, 14-ejection hole, 15-first positioning hole, 16-lifting gap, 2-hydraulic jack equipment, 21-ejection rod, 3-fixed arm, 31-second positioning screw hole, 32-bolt, 33-lifting ring, 34-fourth positioning hole, 35-pin, 4-claw plate, 41-bayonet, 42-slot, 43-third positioning hole.

[0018] In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. In addition, the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. DETAILED DESCRIPTION

[0019] In order to make the technical solution and advantages of the present application clearer, the technical solution of the present application will be further described in detail in detail and in detail in conjunction with the accompanying drawings. It can be understood that the specific embodiments described here are only partial embodiments of the present application, which are only used to explain the present application, not to limit the present application. It should be noted that, for the convenience of description, only the parts related to the present application are shown in the accompanying drawings, and other related parts can refer to the general design. In the absence of conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0020] The following is a detailed description of the utility model inlet line in conjunction with the accompanying drawings. Figure 1-2 As shown, the fan impeller shaft unloading device includes a frame 1, a hydraulic jack device 2, and a pair of fixed arms 3. The frame 1 includes an upper mounting plate 11 and a lower mounting plate 12. An ejection fixing plate 13 is provided between the upper and lower mounting plates 12. The ejection fixing plate 13 is provided with an ejection hole 14. The pair of fixed arms 3 are symmetrically arranged between the upper and lower mounting plates 12 and are detachably fixed to both sides of the ejection fixing plate 13. The pair of fixed arms 3 are both provided with a claw plate 4 extending toward one side of the ejection fixing plate 13. The claw plate 4 is provided with a bayonet 41 that matches the contour of the impeller sleeve and clamps the sleeve. The ejector rod 21 of the hydraulic jack device is arranged at the ejection fixing plate 13, and axially reciprocates through the ejection hole 14 to eject the impeller shaft.

[0021] The fan impeller shaft sleeve is clamped and fixed by using the claw plates 4 of a pair of fixed arms 3, and then the push rod 21 of the hydraulic jack device 2 is pushed out from the ejection hole 14 to push the impeller shaft out of the shaft sleeve, thereby replacing manual and traditional methods and completing the shaft unloading work more safely, simply and efficiently.

[0022] The pair of fixed arms 3 are slidably matched in the horizontal direction between the upper and lower mounting plates 12. The upper mounting plate 11 and the lower mounting plate 12 are provided with a plurality of first positioning holes 15 at intervals in the horizontal direction. The pair of fixed arms 3 are both provided with second positioning screw holes 31. The device is provided with bolts 32 that pass through the first positioning holes 15 and are fixed with the second positioning screw holes 31.

[0023] By adopting the above technical solution, a pair of fixed arms 3 are slidably adjusted in spacing to adapt to bushings of different diameters for clamping, and then the bolts 32 are passed through the first positioning holes 15 and the second positioning screw holes 31 to fix the positions of the fixed arms 3 to complete the clamping work.

[0024] The fixed arm 3 is provided with a lifting ring 33 .

[0025] The lifting ring 33 on the fixed arm 3 is hooked by a crane, so as to move the fixed arm 3 and eliminate manpower.

[0026] The claw plate 4 is provided with a slot 42 whose contour is adapted to the cross-sectional contour of the fixed arm 3 in the length direction. The slot 42 is sleeved on the fixed arm 3 for sliding fit in the length direction. The claw plate 4 is provided with a plurality of third positioning holes 43 at intervals along the length direction of the fixed arm 3. The fixed arm 3 is provided with a fourth positioning hole 34. The device also includes a pin 35, which passes through the third and fourth positioning holes 34 to fix the claw plate 4 and the fixed arm 3.

[0027] By adjusting and fixing the length direction position of the claw plate 4, the claw plate 4 can adapt to different axial length specifications of the shaft sleeve and the impeller shaft, thereby completing the clamping work.

[0028] The bottom of the frame 1 is provided with supporting feet, which support the bottom of the frame 1 to form a lifting gap 16.

[0029] By setting the lifting distance, when the impeller diameter is too large and touches the ground, a forklift can be used to insert into the lifting gap 16 to lift the frame 1 or move the frame 1 to a high platform position to adapt to the large diameter of the impeller.

[0030] The impeller shaft sleeve can be fixed by the provided shaft unloading device, and the impeller shaft can be ejected by the hydraulic jack device 2 to complete the shaft unloading work, which is safer and more efficient than the traditional solution. In addition, the adjustable structure of the fixed arm 3 and the claw plate 4 can adapt to the shaft sleeve diameter and axial length of different impellers, and the lifting structure of the frame 1 can adapt to the change of the impeller diameter.

[0031] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.

Claims

1. Fan impeller shaft unloading device, characterized by: The invention comprises a frame, a hydraulic jack device, and a pair of fixed arms, wherein the frame comprises an upper mounting plate and a lower mounting plate, an ejection fixing plate is arranged between the upper and lower mounting plates, and an ejection hole is arranged on the ejection fixing plate, the pair of fixed arms are symmetrically arranged between the upper and lower mounting plates, and are detachably fixed to both sides of the ejection fixing plate, the pair of fixed arms are both provided with claw plates extending toward one side of the ejection fixing plate, the claw plates are provided with bayonet sockets adapted to the contour of the impeller shaft sleeve and clamping the shaft sleeve, the ejector rod of the hydraulic jack device is arranged at the ejection fixing plate, and axially reciprocates through the ejection hole to eject the impeller shaft.

2. The fan impeller shaft unloading device according to claim 1 is characterized in that: The pair of fixed arms are slidably matched between the upper and lower mounting plates in the horizontal direction. The upper and lower mounting plates are provided with a plurality of first positioning holes spaced apart in the horizontal direction. The pair of fixed arms are provided with second positioning screw holes. The device is provided with bolts passing through the first positioning holes and the second positioning screw holes for fixing.

3. The fan impeller shaft unloading device according to claim 2 is characterized in that: The claw plate is provided with a slot whose contour is adapted to the cross-sectional contour of the fixed arm in the length direction. The slot is sleeved on the fixed arm for sliding fit in the length direction. The claw plate is provided with a plurality of third positioning holes at intervals along the length direction of the fixed arm. The fixed arm is provided with a fourth positioning hole. The device also includes a pin, which passes through the third and fourth positioning holes to fix the claw plate and the fixed arm.

4. The fan impeller shaft unloading device according to claim 3 is characterized in that: The fixed arm is provided with a lifting ring.

5. The fan impeller shaft unloading device according to claim 4 is characterized in that: The bottom of the frame is provided with supporting feet, which support the bottom of the frame to form a lifting gap.

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