Tool convenient for shrinkage fit of large rotor

Abstract

The utility model relates to a tool convenient for shrinkage fit of a large rotor, which comprises a tool body, the tool body is composed of two supporting base plates, a transition base plate, a shrinkage fit base and an adjusting mechanism installed on the ground, the number of the supporting base plates is two, and the two supporting base plates are respectively hung and placed on the adjusting mechanism by a travelling crane. Then the two supporting base plates are adjusted through an adjusting mechanism so that the two supporting base plates can be parallel to each other, the middle positions of the two supporting base plates are connected with one face of a transition base plate through bolts, and the other face of the transition base plate is connected with a shrinkage fit base through bolts; a placing hole for vertically hanging the main shaft is formed in the middle position of the shrinkage fit base; and the heated impeller is vertically sleeved in the main shaft to realize interference fit between the impeller and the main shaft. The device has the advantages that the structure is simple and reasonable, the mounting and the dismounting are convenient, the perpendicularity of the main shaft during impeller sleeve falling is well ensured, the working efficiency is improved, and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of impeller abrasive flow processing, and in particular relates to a tooling that is convenient for red sleeves of large rotors. Background Art

[0002] The impeller and main shaft of the large single-shaft centrifugal compressor rotor adopt interference fit. The conventional method is to heat the impeller and vertically insert it into the main shaft to complete it (i.e. red sleeve). However, under the current conditions, the red sleeve site and tooling cannot effectively and safely carry out the red sleeve process of large impellers and main shafts. The main problems are as follows: 1) The positioning surface of the vertical main shaft cannot ensure the verticality of the main shaft; 2) Due to the long main shaft, large and heavy impeller, and the long sleeve drop stroke, the pad supporting the main shaft cannot withstand sufficient sleeve drop impact and is prone to deformation, resulting in poor interference fit between the impeller and the main shaft.

[0003] Therefore, a tooling is designed to facilitate the red sleeve of large rotors, thereby overcoming the above problems. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and to provide a tooling for large rotor red sleeves which has a simple and reasonable structure, is easy to install and disassemble, and well ensures the verticality of the main shaft when the impeller is put into the sleeve, thereby improving work efficiency.

[0005] The utility model is realized through the following technical scheme: a tooling for large rotor red sleeve, comprising a tooling body, wherein the tooling body is composed of a supporting pad, a transition pad, a red sleeve base and an adjusting mechanism installed on the ground, wherein the number of the supporting pads is two, the two supporting pads are respectively suspended and placed on the adjusting mechanism by a crane, and then adjusted through the adjusting mechanism so that the two supporting pads are parallel to each other, the middle position of the two supporting pads is respectively connected to one side of the transition pad by bolts, and the other side of the transition pad is connected to the red sleeve base by bolts, and a placement hole for vertically hanging into the main shaft is provided in the middle position of the red sleeve base, and then the heated impeller is vertically inserted into the main shaft to achieve interference fit between the impeller and the main shaft.

[0006] Preferably: the adjustment mechanism is composed of two linear guide rails parallel to each other, each linear guide rail is equipped with a plurality of slidable linear sliders, and the two ends of each support plate are respectively placed on the linear sliders of the linear guide rails. After the linear sliders have adjusted the relative positions of the two support plates respectively, the linear sliders are first limited and fixed by locking bolts, and then the transition plate and the red sleeve base are installed in sequence between the two support plates.

[0007] Preferably, the support pad is composed of an upper flat plate, a lower flat plate and a rib plate arranged between the upper and lower flat plates and perpendicular to the upper and lower flat plates. The rib plate is fixed to the upper and lower flat plates by welding to form an I-shaped support pad for increasing strength and resisting deformation to withstand the impact of falling sleeves.

[0008] Preferably, a level is installed on each of the support pads, and tightening screws are installed at the four corners of the bottom of each support pad, so that the levelness of the support pad can be adjusted by the tightening screws and the level.

[0009] Preferably, at least two hanging screw holes are respectively arranged on each of the support pads, and a hanging ring is installed in each hanging screw hole to facilitate hanging of the support pad during driving.

[0010] The beneficial effects of the utility model are as follows:

[0011] 1) The tooling designed by the utility model for large rotor red sleeves can well ensure the verticality of the vertical positioning surface of the main shaft; the support pad of the utility model is an I-shaped structure, which can well withstand sufficient sleeve drop impact without deformation.

[0012] 2) The tooling designed by the utility model for large rotor red sleeves improves the applicability and safety of the red sleeve tooling and reduces the scrap rate of the impeller and main shaft red sleeves through the welded structural parts and the level adjustment method. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 It is a structural schematic diagram of the support pad in the utility model.

[0015] Figure 3 It is a structural schematic diagram of the transition pad in the utility model.

[0016] Figure 4 It is a structural schematic diagram of the red sleeve base in the utility model. DETAILED DESCRIPTION

[0017] In order to enable ordinary technicians in the field to more clearly understand the purpose, technical solutions and advantages of the utility model, the utility model is further explained below in conjunction with the accompanying drawings and embodiments.

[0018] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "horizontal" and "vertical" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the device or component referred to must have a specific direction and therefore should not be understood as a limitation on the present invention.

[0019] The utility model will be described in detail below with reference to the accompanying drawings: Figure 1 As shown, a tooling for red sleeve of large rotors includes a tooling body, which is composed of a supporting pad 1, a transition pad 2, a red sleeve base 3 and an adjusting mechanism 4 installed on the ground. The number of the supporting pads 1 is two, and the two supporting pads 1 are hung and placed on the adjusting mechanism 4 by the driving crane respectively, and then adjusted by the adjusting mechanism 4 so that the two supporting pads 1 are parallel to each other, and the middle positions of the two supporting pads 1 are respectively connected to one side of the transition pad 2 by bolts, and the other side of the transition pad 2 is connected to the red sleeve base 3 by bolts 5, and the middle position of the red sleeve base 3 is provided with a placement hole 6 for vertically hanging into the main shaft, and then the heated impeller is vertically inserted into the main shaft to achieve interference fit between the impeller and the main shaft.

[0020] The adjustment mechanism 4 is composed of two linear guide rails 7 parallel to each other, and each linear guide rail 7 is equipped with a plurality of slidable linear sliders 8. The two ends of each support pad 1 are respectively placed on the linear sliders 8 of the linear guide rails 7. After the linear sliders 8 have adjusted the relative positions of the two support pads 1, the linear sliders 8 are first limited and fixed by locking bolts 9, and then the transition pad 2 and the red sleeve base 3 are installed in sequence between the two support pads 1.

[0021] The advantage of the linear guide slider designed in the utility model is that it has good levelness and is easy to slide when the position needs to be adjusted. The support pad can be easily adjusted in position, making the overall practicality stronger and being able to meet the requirements of red sleeve operations for impellers and spindles of different sizes.

[0022] The support pad 1 is composed of an upper flat plate 10, a lower flat plate 11 and a rib plate 12 arranged between the upper and lower flat plates and perpendicular to the upper and lower flat plates. The rib plate 12 is fixed to the upper and lower flat plates by welding to form an I-shaped support pad 1 for increasing strength and resisting deformation to withstand the impact of falling sleeves.

[0023] The supporting pad of the utility model adopts an I-shaped structure, and the upper and lower flat plates and the rib plate are welded to increase the strength and resist deformation and bouncing.

[0024] A level 14 is installed on each support pad 1, and tightening screws 13 are installed at the four corners of the bottom of each support pad, and the horizontality of the support pad is adjusted by tightening screws 13 and level 14. Each support pad 1 is provided with at least two hanging screw holes 15, and a hanging ring is installed in each hanging screw hole 15, which is used to facilitate the hanging of the support pad 1 during driving.

[0025] The working process of the utility model is as follows:

[0026] 1. Install two linear guides at appropriate positions with the pit as the center, install linear sliders on the linear guides, and place the support pads on the linear sliders through the lifting rings on the support pads. The crane can first roughly adjust the positions of the two support pads, and then slide the support pads on the linear guides for more precise adjustment, so that the two support pads are in the required positions for the operation, and then connect and fix the two support pads and the transition pads with screws, and then connect and fix the transition pads and the red sleeve base with screws, and adjust the level with the spirit level and tightening screws before starting the red sleeve operation. If the radial size of the backing surface is smaller than the inner hole of the red sleeve base, select the transition sleeve according to the size required by the red sleeve spindle to ensure the verticality of the spindle.

[0027] The specific embodiments described herein are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A tooling for large rotor red jacket, comprising a tooling body, characterized in that: The tooling body is composed of a support pad (1), a transition pad (2), a red sleeve base (3) and an adjustment mechanism (4) installed on the ground. The number of the support pads (1) is two. The two support pads (1) are suspended and placed on the adjustment mechanism (4) by the crane, and then adjusted by the adjustment mechanism (4) so ​​that the two support pads (1) are parallel to each other. The middle positions of the two support pads (1) are connected to one side of the transition pad (2) by bolts, and the other side of the transition pad (2) is connected to the red sleeve base (3) by bolts (5). The middle position of the red sleeve base (3) is provided with a placement hole (6) for vertically hanging the main shaft, and then the heated impeller is vertically inserted into the main shaft to achieve interference fit between the impeller and the main shaft.

2. The tooling for large rotor red jacket according to claim 1 is characterized in that: The adjustment mechanism (4) is composed of two linear guide rails (7) parallel to each other, each linear guide rail (7) is equipped with a plurality of slidable linear sliders (8), and the two ends of each support pad (1) are respectively placed on the linear sliders (8) of the linear guide rails (7). After the linear sliders (8) have adjusted the relative positions of the two support pads (1), the linear sliders (8) are firstly fixed in position by locking bolts (9), and then the transition pad (2) and the red sleeve base (3) are sequentially installed between the two support pads (1).

3. The tooling for large rotor red jacket according to claim 2 is characterized in that: The support pad (1) is composed of an upper flat plate (10), a lower flat plate (11), and a rib plate (12) disposed between the upper and lower flat plates and perpendicular to the upper and lower flat plates. The rib plate (12) is fixed to the upper and lower flat plates by welding, forming an I-shaped support pad (1) for increasing strength and resisting deformation, thereby withstanding the impact of falling sleeves.

4. The tooling for large rotor red jacket according to claim 3 is characterized in that: A level (14) is installed on each of the support pads (1), and tightening screws (13) are installed at the four corners of the bottom of each support pad, and the horizontality of the support pad is adjusted by means of the tightening screws (13) and the level (14).

5. The tooling for large rotor red jacket according to claim 4 is characterized in that: Each of the support pads (1) is provided with at least two hanging screw holes (15), and a hanging ring is installed in each hanging screw hole (15) for conveniently hanging the support pad (1) during driving.

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