Welding repair frame for centrifugal fan impeller maintenance

Abstract

The utility model belongs to the field of fan impeller maintenance, and particularly relates to a centrifugal fan impeller maintenance welding repair frame which comprises a working platform, a connecting column, a supporting device and a driving motor, the connecting column is of a hollow structure, the working platform comprises a supporting plate and a balancing weight, the supporting plate is fixedly connected to the upper portion of the balancing weight, and the driving motor is arranged on the supporting plate. The connecting column is fixedly connected to the upper portion of the supporting plate, the driving motor is installed on the balancing weight, the output end of the driving motor penetrates through the supporting plate to be arranged in the connecting column, and the supporting device is rotationally connected to the connecting column and connected with the output end of the driving motor. The fan impeller is arranged on the supporting device in a sleeving manner; the supporting device in the device is used for being arranged on the fan impeller in a sleeving mode, a worker can conveniently maintain the side face of the fan impeller, and meanwhile the supporting device in the device can provide supporting shafts with different diameters and is used for maintaining impellers with different calibers.

Description

Technical Field

[0001] The utility model relates to the field of fan impeller maintenance, in particular to a centrifugal fan impeller maintenance welding rack. Background Art

[0002] The impeller plays the role of introducing and accelerating gas, compressing gas, and converting energy in a multi-stage centrifugal fan. The realization of these functions depends on the special design and high-speed rotation of the impeller, which enables the multi-stage centrifugal fan to efficiently transport and compress gas, and is widely used in construction, metallurgy, chemical industry, electric power and other industries. Therefore, in practice, the sealing performance of the impeller is particularly important, and the sealing ring of the impeller will wear during use, resulting in reduced sealing effect and air leakage. Therefore, the staff needs to repair the sealing ring of the impeller. Usually, the impeller is large in size and is repaired on the side. During the maintenance process, the impeller needs to be rotated to repair the sealing ring on the entire side of the impeller.

[0003] In order to solve the above-mentioned technical problems, a centrifugal fan impeller repair welding rack is specifically proposed. Utility Model Content

[0004] The utility model aims to solve the above-mentioned problems and specifically designs a centrifugal fan impeller repair welding rack. The supporting device in the device is used to sleeve the fan impeller, which is convenient for staff to repair the side of the fan impeller. At the same time, the supporting device in the device can provide support shafts of different diameters for repairing impellers of different calibers.

[0005] To achieve the above-mentioned purpose, the utility model provides a centrifugal fan impeller repair welding rack, comprising: a working platform, a connecting column, a supporting device and a driving motor, the connecting column is a hollow structure, the working platform comprises a supporting plate and a counterweight block, the supporting plate is fixedly connected to the top of the counterweight block, the connecting column is fixedly connected to the top of the supporting plate, the driving motor is mounted on the counterweight block and the output end of the driving motor passes through the supporting plate and is placed inside the connecting column, the supporting device is rotatably connected to the connecting column and connected to the output end of the driving motor, and the fan impeller is sleeved on the supporting device.

[0006] In the above manner, the impeller is sleeved on the supporting device, and the driving motor is used to drive the supporting device, so that the supporting device can drive the impeller to rotate. When the impeller rotates, the entire sealing ring on the side can be repaired.

[0007] Furthermore, the supporting device includes a mounting block and a supporting shaft, the mounting block is a hollow structure with an opening at the bottom, the mounting block is sleeved on the connecting column through the lower opening, there are several supporting shafts with different diameters, and several supporting shafts are evenly distributed and slidably connected to the side of the mounting block.

[0008] In the above manner, support shafts of different diameters are used to adapt to impellers of different diameters. When the support shaft needs to be switched to adapt to the impeller, the mounting block can be rotated to adjust it.

[0009] Furthermore, the output end of the driving motor is connected to a transmission shaft, one end of the support shaft is placed in the mounting block and is slidably connected to the mounting block, and this end is fixedly connected to a driven shaft, a transmission interface is provided on the side of the connecting column, and the driven shaft passes through the transmission interface and is connected to the transmission shaft through a bevel gear.

[0010] Furthermore, the supporting device also includes a positioning sleeve, and the top surface and the bottom surface of the inner wall of the mounting block are fixedly connected with the positioning sleeve, the positioning sleeve is adapted to the opening diameter of the bottom of the mounting block, and the connecting column is rotatably connected to the positioning sleeve.

[0011] Furthermore, the connecting column also includes a press-in spring positioning bead, a positioning notch is provided on the positioning sleeve, the press-in spring positioning bead is installed on the outer wall of the connecting column and is located directly above the transmission interface, the positioning notch is provided on the inner wall of the positioning sleeve located at the upper part, and the press-in spring positioning bead is connected in contact with the positioning notch.

[0012] Furthermore, a limiting ring is arranged on the circumference of the support shaft, and there are two limiting rings, which are respectively located inside and outside the mounting block.

[0013] Through the above method, when the support shaft needs to be adjusted, first pull the support shaft outward so that the internal limit ring contacts the inner wall of the mounting block, then rotate the entire support device, rotate the support shaft you want to use to the front, and then push the support shaft inward so that the external limit ring contacts the outer wall of the mounting block. At this time, the bevel gear on the driven shaft is connected to the bevel gear on the transmission shaft, and the switching of the support shaft is completed.

[0014] Furthermore, the number of the positioning notches is equal to that of the supporting shafts and their positions correspond.

[0015] Through the above method, in order to make the support shaft on the support device face the internal driving motor after rotation, the positioning notches are relative to the support shaft and are equal in number. When rotating, the notches and the positioning beads cooperate to align the position.

[0016] In summary, the centrifugal fan impeller repair welding rack of the utility model has the following advantages and beneficial technical effects:

[0017] 1. The utility model provides a centrifugal fan impeller repair welding stand, which can facilitate the staff to repair the sealing ring on the side of the impeller;

[0018] 2. The supporting device on the centrifugal fan impeller repair welding rack of the utility model is equipped with supporting shafts of multiple diameters, which can repair impellers of different diameters;

[0019] 3. The positioning notch on the positioning sleeve on the centrifugal fan impeller repair welding frame of the utility model can cooperate with the positioning bead to limit the rotation position of the supporting device, so that the switching of the supporting shaft is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 This is a structural schematic diagram of a centrifugal fan impeller repair welding rack of the utility model

[0022] Figure 2 This is a schematic diagram of the internal structure of a support device for a centrifugal fan impeller repair welding rack according to the utility model;

[0023] Figure 3 This is a top view of a centrifugal fan impeller repair welding stand of the utility model;

[0024] Figure 4 This utility model Figure 2 A is an enlarged view of the middle image.

[0025] The reference numerals in the accompanying drawings are:

[0026] 1-working platform; 11-support plate; 12-counterweight block;

[0027] 2-connecting column; 21-transmission interface; 22-pressed spring positioning bead;

[0028] 3-support device; 31-mounting block; 32-support shaft; 321-limiting ring; 322-driven shaft; 33-positioning sleeve; 331-positioning notch;

[0029] 4-driving motor; 41-transmission shaft. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-Figure 4The utility model is further described in detail, and examples of embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and should not be construed as limiting the utility model.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the description of this embodiment, the terms "upper", "lower", "right", etc., and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning. The parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0033] like Figure 1 and Figure 3 As shown, it includes: a working platform 1, a connecting column 2, a supporting device 3 and a driving motor 4. The connecting column 2 is a hollow structure. The working platform 1 includes a supporting plate 11 and a counterweight block 12. The supporting plate 11 is fixedly connected to the top of the counterweight block 12 by welding. The connecting column 2 is fixedly connected to the top of the supporting plate 11 by welding. The counterweight block 12 is provided with a receiving groove. The driving motor 4 is installed in the receiving groove of the counterweight block 12 and the output end of the driving motor 4 passes through the supporting plate 11 and is placed inside the connecting column 2. The supporting device 3 is rotatably connected to the connecting column 2 and is connected to the output end of the driving motor 4. The fan impeller is sleeved on the supporting device 3.

[0034] like Figure 2As shown, the support device 3 includes a mounting block 31 and a support shaft 32. The mounting block 31 is a hollow cube structure with a circular notch at the bottom. The mounting block 31 is sleeved on the connecting column 2 through the lower opening. There are four support shafts 32 with different diameters. The diameter is selected according to the caliber of the impeller based on usage requirements. The four support shafts 32 are evenly distributed and slidably connected to the side of the mounting block 31.

[0035] like Figure 2 As shown, the output end of the driving motor 4 is connected to the transmission shaft 41, one end of the support shaft 32 is placed in the mounting block 31 and is slidably connected to the mounting block 31, and this end is fixedly connected to the driven shaft 322 by welding, and a transmission interface 21 is opened on the side of the connecting column 2, and the driven shaft 322 passes through the transmission interface 21 and is connected to the transmission shaft 41 through a bevel gear.

[0036] like Figure 2 As shown, the support device 3 also includes a positioning sleeve 33. The top and bottom surfaces of the inner wall of the mounting block 31 are fixedly connected with the positioning sleeve 33 by welding. The positioning sleeve 33 is adapted to the opening diameter at the bottom of the mounting block 31, and the connecting column 2 is rotatably connected to the positioning sleeve 33.

[0037] like Figure 2 and Figure 4 As shown, the connecting column 2 further includes a press-in spring positioning bead 22, a positioning notch 331 is provided on the positioning sleeve 33, the press-in spring positioning bead 22 is installed on the outer wall of the connecting column and is located directly above the transmission interface 21, the positioning notch 331 is provided on the inner wall of the positioning sleeve 33 located at the upper part, and the press-in spring positioning bead 22 is abutted and connected with the positioning notch 331. The number of the positioning notches 331 and the supporting shaft 32 are equal and the positions are corresponding.

[0038] like Figure 2 As shown, a limit ring 321 is arranged on the circumference of the support shaft 32 by welding, and there are two limit rings 321, which are respectively located inside and outside the mounting block 31, and the distance between the two limit rings 321 is the distance that the bevel gear at the driven shaft end withdraws from the meshing state from the connecting column.

[0039] The working principle of the centrifugal fan impeller repair welding rack of the utility model is:

[0040] First, select a suitable support shaft 32. If the opposite support shaft 32 is not suitable, pull the frontmost support shaft 32 outwards to make the internal limit ring 321 contact the inner wall of the mounting block 31, then rotate the entire support device 3, rotate the support shaft 32 you want to use to the front, and then push this support shaft 32 inwards to make the external limit ring 321 contact the outer wall of the mounting block 31. At this time, the bevel gear on the driven shaft 322 is connected to the bevel gear on the transmission shaft 41, and the switching of the support shaft is completed.

[0041] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A centrifugal fan impeller repair welding stand, characterized in that: include: A working platform (1), a connecting column (2), a supporting device (3) and a driving motor (4), wherein the connecting column (2) is a hollow structure, the working platform (1) comprises a supporting plate (11) and a counterweight (12), the supporting plate (11) is fixedly connected to the top of the counterweight (12), the connecting column (2) is fixedly connected to the top of the supporting plate (11), the driving motor (4) is mounted on the counterweight (12) and the output end of the driving motor (4) passes through the supporting plate (11) and is placed inside the connecting column (2), the supporting device (3) is rotatably connected to the connecting column (2) and is connected to the output end of the driving motor (4), and the fan impeller is sleeved on the supporting device (3).

2. A centrifugal fan impeller repair welding stand according to claim 1, characterized in that: The support device (3) comprises a mounting block (31) and a support shaft (32); the mounting block (31) is a hollow structure with an opening at the bottom; the mounting block (31) is sleeved on the connecting column (2) through the opening at the bottom; there are a plurality of support shafts (32) with different diameters; the plurality of support shafts (32) are evenly distributed and slidably connected to the side of the mounting block (31).

3. A centrifugal fan impeller repair welding stand according to claim 2, characterized in that: The output end of the driving motor (4) is connected to a transmission shaft (41), one end of the supporting shaft (32) is placed in the mounting block (31) and is slidably connected to the mounting block (31), and the other end is fixedly connected to a driven shaft (322), a transmission interface (21) is provided on the side of the connecting column (2), and the driven shaft (322) passes through the transmission interface (21) and is connected to the transmission shaft (41) via a bevel gear.

4. A centrifugal fan impeller repair welding stand according to claim 3, characterized in that: The supporting device (3) further comprises a positioning sleeve (33), the top surface and the bottom surface of the inner wall of the mounting block (31) are both fixedly connected with the positioning sleeve (33), the positioning sleeve (33) is matched with the opening diameter of the bottom of the mounting block (31), and the connecting column (2) is rotatably connected to the positioning sleeve (33).

5. A centrifugal fan impeller repair welding stand according to claim 4, characterized in that: The connecting column (2) further comprises a press-in spring positioning bead (22), the positioning sleeve (33) is provided with a positioning notch (331), the press-in spring positioning bead (22) is mounted on the outer wall of the connecting column (2) and is located directly above the transmission interface (21), the positioning notch (331) is provided on the inner wall of the positioning sleeve (33) located at the upper part, and the press-in spring positioning bead (22) is in contact with the positioning notch (331).

6. A centrifugal fan impeller repair welding stand according to claim 3, characterized in that: A limiting ring (321) is provided on the circumference of the support shaft (32), and there are two limiting rings (321), which are respectively located inside and outside the mounting block (31).

7. A centrifugal fan impeller repair welding stand according to claim 5, characterized in that: The number of the positioning notches (331) and the supporting shaft (32) are equal and their positions correspond.

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