Novel heavy-weight impeller nut installation auxiliary tool

Abstract

The utility model discloses a novel auxiliary tool for installing a heavy-weight impeller nut. The novel auxiliary tool comprises a height adjusting supporting plate, wherein the height adjusting supporting plate can carry out height fine adjustment in the vertical direction according to the thread length of a main shaft; the elastic fine adjustment supporting plate is detachably installed on the height adjustment supporting plate and used for compensating the offset of the axis angle of the impeller nut. The utility model relates to the technical field of pump body installation, the height is finely adjusted through the height adjusting support plate, so that an impeller nut is close to a main shaft, the elastic fine adjusting support plate compensates the angle difference between axes, the phenomenon that the axis of the impeller nut and the axis of the main shaft are not concentric or collided to easily cause thread damage is effectively avoided, and rework and repair are effectively reduced; installation according to physical strength and hand feeling of an operator is not needed, manual lifting actions are reduced, meanwhile, balance of force application control is guaranteed, after the impeller nut coincides with the axis of the spindle, the height adjusting supporting plate continues to be lifted to enable starting threads of the impeller nut and the spindle to be led in, alignment of the starting threads is facilitated, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of pump body installation, and specifically relates to a new auxiliary tool for installing a heavy-weight impeller nut. Background Art

[0002] The impeller nut is a nut used to fix the impeller and has a mechanical transmission function. In industrial production, the impeller nut is an indispensable component that can ensure the long-term stable operation of the machine equipment;

[0003] Currently, the impeller nuts used in large axial-flow pumps weigh from a few kilograms to several dozen kilograms, as they balance fastening and flow-guiding functions. These nuts are thick and heavy, and lack dedicated lifting points. Typically, the rotor assembly is placed horizontally or vertically onto a fixture support, and the operator manually lifts the nut and screws it into the shaft thread. When the impeller nut exceeds the weight of a single person, multiple people are required to level, lift, and screw it in.

[0004] However, during installation, if the axis of the impeller nut is not concentric with the axis of the main shaft or collides with each other, the thread may be damaged, resulting in rework and repair; for heavy impeller nuts, it is difficult to control the force balance during the lifting process of multiple people; the starting thread is difficult to align, which is time-consuming and labor-intensive. At the same time, the space below the tooling frame is limited, the operation is difficult, and the entire assembly process is inefficient. Therefore, a new auxiliary tooling for installing heavy impeller nuts is provided. Utility Model Content

[0005] The purpose of this utility model is to provide a new auxiliary tool for installing heavy impeller nuts, so as to solve the problems of the impeller nut axis not being concentric with the main shaft axis or being knocked during installation, which may easily cause thread damage and require rework and repair; for heavy impeller nuts, it is difficult to control the force balance during the lifting process of multiple people; the initial thread is difficult to align, which is time-consuming and labor-intensive, and the space under the tool frame is limited, making operation difficult. The entire assembly process is inefficient, the probability of component damage is high, and the operator's physical exertion is high.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new auxiliary tool for installing heavy-weight impeller nuts, comprising:

[0007] Height adjustment support plate, which can be fine-tuned in vertical direction according to the thread length of the spindle;

[0008] An elastic fine-tuning support plate, which can be detachably mounted on the height-adjusting support plate and is used to compensate for the offset of the impeller nut axis angle;

[0009] Among them, the impeller nut is placed on an elastic fine-tuning support plate, and the impeller nut is brought closer to the main shaft by raising the height-adjusting support plate. The elastic fine-tuning support plate is used to compensate the axial angle of the impeller nut so that the axial line of the impeller nut and the main shaft coincide. The height-adjusting support plate is further raised to introduce the starting thread of the impeller nut and the main shaft.

[0010] Preferably, the height adjustment support plate includes a base that can be mounted on a tooling frame, a mounting cylinder is provided on the base, a lifting cylinder is connected to the mounting cylinder through fine thread threads, and an annular support plate is provided on the top of the lifting cylinder.

[0011] Preferably, the elastic fine-tuning support plate includes an angle adjustment support plate arranged above the lifting cylinder, an elastic member is provided between the angle adjustment support plate and the bottom of the lifting cylinder, a locking assembly is provided between the top of the elastic member and the angle adjustment support plate, and a detachable connecting part is provided between the bottom of the elastic member and the bottom of the lifting cylinder.

[0012] Preferably, the locking assembly includes a connecting tube arranged at the bottom of the angle adjustment support plate, a plug-in connecting seat is provided on the top of the elastic member, a plurality of strip-shaped through-holes are provided on the side wall of the connecting tube, a resistance plate is rotatably installed at one end of the inner side of the strip-shaped through-hole, a limit block is provided at the end of the resistance plate, an annular limit groove is provided on the plug-in connecting seat, and an extrusion ring is threadedly connected to the outer side of the connecting tube.

[0013] Preferably, the abutting end of the limiting block is configured as an arc-shaped surface, and the cross section of the annular limiting groove is configured as a triangle.

[0014] Preferably, the detachable connection portion includes a connection seat arranged at the bottom of the elastic member, a bolt is provided at the bottom of the connection seat, and a threaded opening adapted to fit the bolt is provided at the bottom of the lifting cylinder.

[0015] Preferably, four elastic members are provided and are evenly distributed on the bottom of the angle adjustment support plate.

[0016] Preferably, the elastic member is configured as a spring, and the elastic modulus of the elastic member is selected according to the weight required to support the impeller nut.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the new heavy-weight impeller nut installation auxiliary tool of the present invention can fine-tune the height through the height adjustment support plate during installation, so that the impeller nut is close to the main shaft, and the elastic fine-tune support plate compensates for the angle difference between the axis centers, so that the two axis centers tend to be parallel, effectively avoiding the impeller nut axis and the main shaft axis from being out of center or collision and easy thread damage, reducing the probability of parts damage and effectively reducing rework and repair;

[0018] By placing the heavy impeller nut on the elastic fine-tuning support plate, the installation does not need to be based on the operator's physical strength and feel, reducing the manual lifting action, increasing operational stability, and ensuring the balance of control force. After the impeller nut and the main shaft axis coincide, the height adjustment support plate is further raised to introduce the impeller nut into the starting thread of the main shaft, which facilitates the alignment of the starting thread and saves time and effort.

[0019] By installing the auxiliary tooling on the tooling frame, the space below the tooling frame is freed up, the difficulty of operation is reduced, and the efficiency of the entire assembly process is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the top cross-sectional structure of the utility model;

[0022] Figure 3 for Figure 1 A local enlarged structural diagram of point A;

[0023] Figure 4 for Figure 1 A schematic diagram of the partially enlarged structure at point B;

[0024] Figure 5 This is a schematic diagram of the main cross-sectional structure of the utility model at the assembly and installation site.

[0025] In the figure: 100, height adjustment support plate; 101, base; 102, mounting cylinder; 103, lifting cylinder; 104, annular support plate; 200, elastic fine-tuning support plate; 210, angle adjustment support plate; 220, elastic member; 230, locking assembly; 231, connecting cylinder; 232, plug-in connecting seat; 233, strip-shaped through-hole; 234, resistance plate; 235, limit block; 236, annular limit groove; 237, extrusion ring; 240, detachable connection part; 241, connecting seat; 242, bolt; 243, threaded through-hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-4The utility model provides a technical solution: a new auxiliary tool for installing a heavy-weight impeller nut, including a height-adjusting support plate 100 that can fine-tune the height in the vertical direction according to the thread length of the main shaft; an elastic fine-tuning support plate 200 that can be detachably installed on the height-adjusting support plate 100 to compensate for the offset of the axial center angle of the impeller nut; wherein the impeller nut is placed on the elastic fine-tuning support plate 200, and the impeller nut is brought close to the main shaft by raising the height-adjusting support plate 100, and the axial center angle of the impeller nut is compensated by using the elastic fine-tuning support plate 200 so that the impeller nut and the axial center line of the main shaft coincide with each other, and the height-adjusting support plate 100 is further raised to introduce the impeller nut into the starting thread of the main shaft. During installation, the height is fine-tuned by the height-adjusting support plate 100 so that the impeller nut is close to the main shaft, and the elastic fine-tuning support plate 200 is used to adjust the height. 00 compensates for the angular difference between the axis centers, making the two axis centers tend to be parallel, effectively avoiding the impeller nut axis and the main shaft axis from being out of center or causing thread damage due to collision, reducing the chance of part damage and effectively reducing rework and repair; by placing the heavy impeller nut on the elastic fine-tuning support plate 200, during installation, there is no need to install it according to the operator's physical strength and feel, reducing the manual lifting action, increasing operational stability, and ensuring the balance of control force. After the impeller nut and the main shaft axis coincide, continue to raise the height adjustment support plate 100 to introduce the impeller nut and the starting thread of the main shaft, which facilitates the alignment of the starting thread and saves time and effort; by installing the auxiliary tooling on the tooling frame, the space under the tooling frame is freed up, reducing the difficulty of operation and improving the efficiency of the entire assembly process.

[0028] Specifically, the height adjustment support plate 100 includes a base 101 that can be installed on the tooling frame, and a mounting cylinder 102 is provided on the base 101, and a lifting cylinder 103 is connected to the fine-threaded inner surface of the mounting cylinder 102, and an annular support plate 104 is provided on the top of the lifting cylinder 103. When in use, the mounting cylinder 102 is driven to rotate by rotating the annular support plate 104, and the mounting cylinder 102 cooperates with the fine-threaded connection of the lifting cylinder 103 to make the annular support plate 104 and the mounting cylinder 102 rise and fall on the base 101, thereby achieving fine-tuning of the height of the auxiliary tooling, effectively avoiding the impeller nut and the main shaft from colliding and causing easy thread damage, reducing the chance of part damage, and effectively reducing rework and repair. At the same time, after the impeller nut and the main shaft center line coincide with each other, the height adjustment support plate 100 continues to be raised to introduce the impeller nut and the starting thread of the main shaft, which is convenient for aligning the starting thread, saving time and effort, and no need to install according to the operator's physical strength and feel, reducing manual lifting actions, and increasing operational stability.

[0029] Specifically, the elastic fine-tuning support plate 200 includes an angle adjustment support plate 210 provided above the lifting cylinder 103. The angle adjustment support plate 210 is used to place the impeller nut. An elastic member 220 is provided between the angle adjustment support plate 210 and the bottom of the lifting cylinder 103. The elastic member 220 is used to support the angle adjustment support plate 210. By making the angle adjustment support plate 210 have a compensation function for the axial center angle of the impeller nut, a locking assembly 230 is provided between the top of the elastic member 220 and the angle adjustment support plate 210. The locking assembly 230 is used to lock the top of the elastic member 220 with the impeller nut. The angle adjustment support plate 210 is connected, and a detachable connecting part 240 is provided between the bottom of the elastic member 220 and the bottom of the lifting cylinder 103. The detachable connecting part 240 is used to connect the bottom of the lifting cylinder 103 and the bottom of the elastic member 220. The locking assembly 230 and the detachable connecting part 240 are used to facilitate the operator to disassemble the elastic member 220. Before installation, four elastic members 220 can be selected and replaced according to the weight of the impeller nut. The operation is simple, and the auxiliary tooling can support impeller nuts of different weights, which effectively improves the applicability of the auxiliary tooling.

[0030] Specifically, the locking assembly 230 includes a connecting tube 231 arranged at the bottom of the angle adjustment support plate 210, and a plug-in connecting seat 232 is provided on the top of the elastic member 220. The bottom of the plug-in connecting seat 232 is used to connect with the top of the elastic member 22. A plurality of strip-shaped through-holes 233 are provided on the side wall of the connecting tube 231. A contact plate 234 is rotatably installed at one end of the inner side of the strip through-hole 233. A section of the contact plates 234 away from each other is set as a smooth arc surface. A limit block 235 is provided at the end of the contact plate 234. An annular limit groove 236 is provided on the plug-in connecting seat 232. The outer side of the connecting tube 231 is threadedly connected to an extrusion ring 237. The extrusion surface of the extrusion ring 237 is set as a smooth surface. When installing, first install the top of the elastic member 220 At the bottom of the plug-in connecting seat 232, place the angle adjustment support plate 210, so that the top of the plug-in connecting seat 232 is inserted into the inner side of the connecting tube 231, and the extrusion ring 237 is rotated to move on the outer wall of the connecting tube 231, so that the inner wall of the extrusion ring 237 is in conflict with the outer wall of the contact plate 234, driving the contact plate 234 to rotate. During the rotation of the contact plate 234, the plurality of limit blocks 235 are contracted inward, so that the contact ends of the plurality of limit blocks 235 are in conflict with the annular limit groove 236 for locking. The locking assembly 230 realizes a detachable connection between the angle adjustment support plate 210 and the top of the elastic member 220, which ensures the stability of the angle adjustment support plate 210 while facilitating the operator to disassemble the angle adjustment support plate 210 and the elastic member 220.

[0031] Specifically, the contact end of the limit block 235 is set to an arcuate surface, and the cross-section of the annular limit groove 236 is set to a triangle. When the extrusion ring 237 squeezes the contact plate 234, the contact plate 234 drives the limit block 235 to rotate, so that the arcuate surface of the limit block 235 conflicts with the inclined surface of the annular limit groove 236. In the process of the limit block 235 continuing to move, the arcuate surface of the limit block 235 slides relatively on the inclined surface of the annular limit groove 236, so that the limit block 235 limits the annular limit groove 236 while applying a force to the plug-in connecting seat 232 toward the bottom of the connecting tube 231. The locking effect between the bottom of the angle adjustment support plate 210 and the elastic member 220 is effectively improved through the locking assembly 230, and the locking stability of the locking assembly 230 is improved.

[0032] The detachable connecting portion 240 includes a connecting seat 241 provided at the bottom of the elastic member 220, and the connecting seat 241 is used to connect to the bottom of the elastic member 220. The bottom of the connecting seat 241 is provided with a bolt 242, and the bottom of the lifting cylinder 103 is provided with a threaded opening 243 adapted to the bolt 242. After obtaining the quality of the impeller nut, the operator selects the corresponding elastic member 220 and fixes the elastic member 220 on the connecting seat 241. By rotating the connecting seat 241 and driving the bolt 242 to enter the threaded opening 243 on the lifting cylinder 103, the elastic member 220 is fixedly installed on the lifting cylinder 103. The connecting seat 241 is rotated in the opposite direction and the bolt 242 is disengaged from the threaded opening 243 for removal. The detachable connecting portion 240 facilitates the installation and removal of the elastic member 220, avoids the influence of the operating space when the elastic member 220 is directly installed in the lifting cylinder 103, and improves the accuracy of the force applied to the elastic member 220 after installation.

[0033] Specifically, there are four elastic members 220, which are evenly distributed at the bottom of the angle adjustment support plate 210. The angle adjustment support plate 210 is supported by the four elastic members 220, which effectively improves the uniformity of the specific pressure of the elastic members 220 and ensures the stability of the end face of the angle adjustment support plate 210. During installation, the balance of the controlled force is ensured, and installation is achieved without the need for the operator's physical strength and feel, reducing manual lifting actions and increasing operational stability.

[0034] Specifically, the elastic member 220 is set as a spring, and the four springs are set to the same specifications. At the same time, the four springs have the same length, so that the end face of the angle adjustment support plate 210 is stable. The elastic modulus of the elastic member 220 is selected according to the need to support the weight of the impeller nut. The elastic member 220 is detachable. Before installation, the four elastic members 220 can be selected and replaced according to the weight of the impeller nut. The operation is simple, and the auxiliary tooling can support impeller nuts of different weights, effectively improving the applicability of the auxiliary tooling.

[0035] See also Figure 5 In some embodiments, since the ground at the assembly site is not leveled, the hoisting state of the rotor causes an angle between the tooling axis and the main shaft axis due to the difference in the length of the hoisting rope and the hoisting position. This angle prevents the thread from being introduced smoothly. As the height adjustment support plate 100 rises to bring the impeller nut closer to the main shaft, the elastic fine-tuning support plate 200 will be tilted by the force of the main shaft. The elastic part 220 of the elastic fine-tuning support plate 200 will be deformed under the force, compensating for the angle difference between the axes and making the two axes tend to be parallel. Then, the initial thread introduction is achieved by rotating the height adjustment support plate 100 and the impeller nut itself, and the installation of the impeller nut is successfully completed.

[0036] Working principle: When the utility model is in operation and during installation, the heavy impeller nut is first placed on the elastic fine-tuning support plate 200, and the height adjustment support plate 100 is started to perform height fine-tuning to bring the impeller nut close to the main shaft. The elastic fine-tuning support plate 200 compensates for the angle difference between the axis centers, making the two axis centers tend to be parallel, and the height adjustment support plate 100 is continued to be raised to introduce the impeller nut into the starting thread of the main shaft to achieve starting thread alignment.

[0037] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0038] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A new auxiliary tool for installing heavy-weight impeller nuts, characterized in that: include: A height adjustment support plate (100) can be finely adjusted in height in the vertical direction according to the thread length of the main shaft; An elastic fine-tuning support plate (200) is detachably mounted on the height-adjusting support plate (100) and is used to compensate for the offset of the impeller nut axis angle; The impeller nut is placed on an elastic fine-tuning support plate (200), and the impeller nut is brought closer to the main shaft by raising the height adjustment support plate (100). The axial center angle of the impeller nut is compensated by the elastic fine-tuning support plate (200) so that the impeller nut and the main shaft axial center line coincide with each other, and the height adjustment support plate (100) is further raised so that the impeller nut and the starting thread of the main shaft are introduced.

2. A new heavy-weight impeller nut installation auxiliary tool according to claim 1, characterized in that: The height-adjustable support plate (100) comprises a base (101) that can be mounted on a tooling frame, a mounting cylinder (102) being provided on the base (101), a lifting cylinder (103) being connected to the mounting cylinder (102) via a fine-threaded thread, and a ring-shaped support plate (104) being provided on the top of the lifting cylinder (103).

3. A new heavy-weight impeller nut installation auxiliary tool according to claim 2, characterized in that: The elastic fine-tuning support plate (200) includes an angle adjustment support plate (210) disposed above the lifting cylinder (103), an elastic member (220) is disposed between the angle adjustment support plate (210) and the bottom of the lifting cylinder (103), a locking assembly (230) is disposed between the top of the elastic member (220) and the angle adjustment support plate (210), and a detachable connecting portion (240) is disposed between the bottom of the elastic member (220) and the bottom of the lifting cylinder (103).

4. A new heavy-weight impeller nut installation auxiliary tool according to claim 3, characterized in that: The locking assembly (230) comprises a connecting tube (231) arranged at the bottom of the angle adjustment support plate (210); a plug-in connecting seat (232) is provided on the top of the elastic member (220); a plurality of strip-shaped openings (233) are provided on the side wall of the connecting tube (231); a resistance plate (234) is rotatably mounted on one end of the inner side of the strip-shaped opening (233); a limiting block (235) is provided at the end of the resistance plate (234); an annular limiting groove (236) is provided on the plug-in connecting seat (232); and an extrusion ring (237) is threadedly connected to the outer side of the connecting tube (231).

5. A new heavy-weight impeller nut installation auxiliary tool according to claim 4, characterized in that: The abutting end of the limiting block (235) is configured as an arcuate surface, and the cross section of the annular limiting groove (236) is configured as a triangle.

6. A new heavy-weight impeller nut installation auxiliary tool according to claim 3, characterized in that: The detachable connecting portion (240) includes a connecting seat (241) arranged at the bottom of the elastic member (220), a bolt (242) is provided at the bottom of the connecting seat (241), and a threaded opening (243) adapted to the bolt (242) is provided at the bottom of the lifting cylinder (103).

7. The new heavy-weight impeller nut installation auxiliary tool according to claim 3 is characterized by: Four elastic members (220) are provided and evenly distributed on the bottom of the angle adjustment support plate (210).

8. The new heavy-weight impeller nut installation auxiliary tool according to claim 3 is characterized by: The elastic member (220) is configured as a spring, and the elastic modulus of the elastic member (220) is selected according to the weight of the impeller nut to be supported as required.

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