Auxiliary press-fitting mechanism of high-power magnetic suspension compression and expansion all-in-one machine

Abstract

The utility model discloses an auxiliary press-fitting mechanism of a high-power magnetic suspension compression and expansion all-in-one machine, which comprises a rack, an overturning part and a press-fitting part, the first end of the overturning part is hinged on the rack, and the overturning part can be overturned to a waiting position or a press-fitting position relative to the rack; the press-fitting part is arranged at the second end of the overturning part, the press-fitting part comprises a first driving part and a press-fitting part, the driving end of the first driving part is connected with the press-fitting part, and the first driving part is configured to drive the press-fitting part to ascend and descend. The shell is vertically arranged under the press-fitting part, after the rotor shaft assembly is placed in the shell in the vertical state, the first driving part drives the press-fitting part to descend by the preset height so as to abut against the rotor shaft assembly and fix the rotor shaft assembly in the shell in a press-fitting mode, manual press-fitting is omitted, the press-fitting strength is greatly reduced, the press-fitting efficiency is improved, and the press-fitting efficiency is improved. And the labor cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of compression and expansion integrated machine manufacturing, in particular to an auxiliary pressing mechanism of a high-power magnetic suspension compression and expansion integrated machine. Background Art

[0002] Shipping is the main mode of LNG global trade. During the transportation of LNG ships, LNG will inevitably partially evaporate into BOG flash gas. Direct discharge will cause economic losses and greenhouse hazards. Using LNG cryogenic devices to liquefy it is the main BOG treatment method for large LNG carriers. Compared with mixed refrigeration, nitrogen expansion and other technical routes, cryogenic reliquefaction technology has outstanding advantages such as compact system, high efficiency, high reliability and low maintenance cost. Therefore, LNG cryogenic devices are indispensable high-value-added core equipment. At present, the global LNG cryogenic device market is basically occupied by foreign manufacturers such as Air Liquide and CryoStar. Among them, high-power and high-efficiency magnetic levitation compression and expansion integrated machine is one of the core components of the cryogenic device, and it has become a real "neck-stuck" key technology that needs to be solved urgently for domestic substitution. Because the high-power magnetic levitation compression and expansion integrated machine needs to meet the requirements of high power, high speed, explosion-proof, and sealing, the body and core components are large in size and weight, and human power cannot achieve direct flipping of the body.

[0003] At present, when assembling a compression and expansion machine, it is necessary to first place the first end of the rotor shaft assembly at the installation position of the casing, and then press the rotor shaft assembly into the casing at the second end of the rotor shaft assembly by manual pressing. Due to the particularity of the structure of the rotor shaft assembly, the above-mentioned manual pressing method has the problems of high pressing strength and low pressing efficiency. Utility Model Content

[0004] The utility model aims to provide an auxiliary press-fitting mechanism for a high-power magnetic suspension compression and expansion integrated machine, so as to solve the problems of high press-fitting strength and low press-fitting efficiency in conventional manual press-fitting in the prior art.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] An auxiliary press-fitting mechanism of a high-power magnetic levitation compression-expansion integrated machine is used to press-fit a rotor shaft assembly into a casing, wherein the rotor shaft assembly includes a rotor shaft and at least one bearing mounted on the rotor shaft. The auxiliary press-fitting mechanism of the high-power magnetic levitation compression-expansion integrated machine includes a frame, a turning part and a press-fitting part, wherein:

[0007] The first end of the flip part is hinged on the frame, and the flip part can be flipped relative to the frame to a waiting position or a pressing position;

[0008] The press-fitting part is arranged at the second end of the flip part, and the press-fitting part comprises a first driving member and a press-fitting member, wherein the fixed end of the first driving member is installed at the second end of the flip part, the driving end of the first driving member is connected to the press-fitting member, and the first driving member is configured to drive the press-fitting member to rise and fall;

[0009] During press-fitting, the casing is vertically arranged directly below the press-fitting part. After the rotor shaft assembly is placed in the vertical casing, the first driving part drives the press-fitting part to descend to a preset height to abut against the rotor shaft assembly and press-fit and fix the rotor shaft assembly in the casing.

[0010] Furthermore, the waiting position is parallel to the frame, and the press-fitting position is perpendicular to the frame.

[0011] Furthermore, the press-fitting part is installed on a mounting seat, and the mounting seat includes a guide assembly, a first connecting plate and a second connecting plate, the first connecting plate is installed on the second end of the flip part and is located above the second connecting plate, the first end of the guide assembly is passed through the first connecting plate, the second end of the guide assembly is fixedly installed on the second connecting plate, the fixed end of the first driving member is installed on the first connecting plate, the driving end of the first driving member is connected to the second connecting plate, the press-fitting part is installed on the bottom surface of the second connecting plate, and the first driving member drives the second connecting plate to approach or move away from the first connecting plate to drive the press-fitting part to rise and fall.

[0012] Furthermore, the press-fitting part includes four press-fitting blocks, and the four press-fitting blocks are distributed at the four corners of the second connecting plate in a rectangular shape.

[0013] Furthermore, the press-fitting part can be floatingly mounted on the second connecting plate through a buffer assembly.

[0014] Preferably, the buffer assembly includes four sets of buffer parts, each press-fitting block corresponds to a set of buffer parts, each set of buffer parts includes a floating guide column and a return spring, the first end of the floating guide column is arranged through the second connecting plate and is located between the first connecting plate and the second connecting plate, the second end of the floating guide column is installed on the corresponding press-fitting block, and the return spring is located between the first end of the floating guide column and the second connecting plate.

[0015] Furthermore, the guide assembly includes two guide rods arranged in parallel and at intervals, and a guide hole is opened on the first connecting plate corresponding to each guide rod. The first end of each guide rod can be raised and lowered in the corresponding guide hole, and the second end of each guide rod is installed on the second connecting plate.

[0016] Furthermore, operating arms are arranged at intervals on both sides of the first connecting plate, a first end of each operating arm is fixed on the first connecting plate, and an operating handle is arranged at the second end of each operating arm.

[0017] Furthermore, a control switch for controlling the operation of the first driving member is provided at the second end of each operating arm.

[0018] Furthermore, the first end of the flip part is hinged to the frame via a hinge assembly, the hinge assembly includes a hinge seat and a hinge member, the hinge seat is fixedly mounted on the frame, and the first end of the flip part is hinged to the hinge seat via the hinge member.

[0019] Compared with the prior art, the beneficial effects of the auxiliary pressing mechanism of the high-power magnetic levitation compression and expansion integrated machine are as follows: the pressing part is first moved to the pressing position through the cooperation of the flipping part and the first driving part, and then the first driving part drives the pressing part to descend to a preset height, abuts against the rotor shaft assembly and presses the rotor shaft assembly into the casing, eliminating manual pressing, which not only greatly reduces the pressing strength and improves the pressing efficiency, but also reduces the labor cost; by setting four sets of buffer parts, the downward pressing stroke of the pressing block is buffered during pressing, avoiding hard contact between the pressing block and the rotor shaft assembly during pressing; two guide rods are provided, which significantly improves the stability of the second connecting plate during lifting and lowering; a control switch is provided on the operating arm, which is convenient for controlling the operation of the first driving part and occupies a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate and understand the technical solutions in the embodiments of the present invention, the following briefly introduces the background technology of the present invention and the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the auxiliary press-fitting mechanism of the high-power magnetic suspension compression and expansion integrated machine provided by the embodiment of the utility model;

[0022] Figure 2 It is a side view schematic diagram of the auxiliary press-fitting mechanism of the high-power magnetic suspension compression and expansion integrated machine provided by the embodiment of the utility model;

[0023] Figure 3 It is a top view schematic diagram of the auxiliary pressing mechanism of the high-power magnetic suspension compression and expansion integrated machine provided by the embodiment of the utility model. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0025] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively with reference to the relevant drawings. The preferred embodiments of the utility model are given in the drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thoroughly understood. It should be noted that when a component is referred to as "fixed to" another component, it can be directly on another component or there can also be a central component. When a component is considered to be "connected" to another component, it can be directly connected to another component or there may be a central component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and are not intended to be the only implementation method. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the utility model. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] See also Figures 1 to 3 As shown, in this embodiment, an auxiliary pressing mechanism of a high-power magnetic levitation compression and expansion integrated machine is used to press-fit a rotor shaft assembly into a casing, the rotor shaft assembly includes a rotor shaft and at least one bearing mounted on the rotor shaft, and the auxiliary pressing mechanism of the high-power magnetic levitation compression and expansion integrated machine includes a frame 1, a flip part 2 and a pressing part 3, wherein: the first end of the flip part 2 is hinged on the frame 1, and the flip part 2 can be flipped relative to the frame 1 to a waiting position or a pressing position; the pressing part 3 is arranged at the second end of the flip part 2, and the pressing part 3 includes a first driving member 30 and a pressing member 31, the fixed end of the first driving member 30 is mounted on the second end of the flip part 2, the driving end of the first driving member 30 is connected to the pressing member 31, and the first driving member 30 is configured to drive the pressing member 31 to rise and fall; during pressing, the casing is vertically arranged directly below the pressing member 31, and after the rotor shaft assembly is placed in the casing in a vertical state, the first driving member 30 drives the pressing member 31 to descend to a preset height to abut the rotor shaft assembly and press-fit the rotor shaft assembly into the casing.

[0027] It can be seen that the pressing part 31 is first moved to the pressing position through the cooperation of the flip part 2 and the first driving member 30, and then the first driving member 30 drives the pressing part 31 to descend to a preset height, abuts against the rotor shaft assembly and presses the rotor shaft assembly into the casing, thereby eliminating manual pressing, greatly reducing the pressing strength, improving the pressing efficiency, and reducing labor costs.

[0028] Specifically, the waiting position is parallel to the frame 1 , and the press-fitting position is perpendicular to the frame 1 .

[0029] As an embodiment, the pressing part 31 is installed on the mounting base 4, and the mounting base 4 includes a guide assembly 40, a first connecting plate 41 and a second connecting plate 42. The first connecting plate 41 is installed at the second end of the flip part 2 and is located above the second connecting plate 42. The first end of the guide assembly 40 is passed through the first connecting plate 41, and the second end of the guide assembly 40 is fixedly installed on the second connecting plate 42. The fixed end of the first driving member 30 is installed on the first connecting plate 41, and the driving end of the first driving member 30 is connected to the second connecting plate 42. The pressing part 31 is installed on the bottom surface of the second connecting plate 42. The first driving member 30 drives the second connecting plate 42 to approach or move away from the first connecting plate 41 to drive the pressing part 31 to rise and fall.

[0030] Specifically, the first driving member 30 adopts a driving cylinder

[0031] As an implementation manner, the press-fitting part 31 includes four press-fitting blocks 310 , and the four press-fitting blocks 310 are distributed at four corners of the second connecting plate 42 in a rectangular shape.

[0032] It should be noted that the press-fitting part 31 may also include three press-fitting blocks 310 , and the three press-fitting blocks 310 are distributed in a triangle.

[0033] As an embodiment, the press-fitting part 31 can be floatingly mounted on the second connecting plate 42 through a buffer assembly, and the buffer assembly includes four sets of buffer parts 5, each press-fitting block 310 corresponds to a set of buffer parts 5, and each set of buffer parts 5 includes a floating guide column 50 and a return spring 51. The first end of the floating guide column 50 is arranged to pass through the second connecting plate 42 and is located between the first connecting plate 41 and the second connecting plate 42, and the second end of the floating guide column 50 is installed on the corresponding press-fitting block 310, and the return spring 51 is located between the first end of the floating guide column 50 and the second connecting plate 42.

[0034] It can be seen that by providing four sets of buffer members 5 , the downward pressing stroke of the press-fitting block 310 is buffered during press-fitting, thereby avoiding hard contact between the press-fitting block 310 and the rotor shaft assembly during press-fitting.

[0035] As an embodiment, the guide assembly 40 includes two guide rods 400 arranged in parallel and at intervals, and a guide hole is opened on the first connecting plate 41 corresponding to each guide rod 400. The first end of each guide rod 400 can be raised and lowered in the corresponding guide hole, and the second end of each guide rod 400 is installed on the second connecting plate 42.

[0036] It can be seen that the provision of two guide rods 400 significantly improves the stability of the second connecting plate 42 during lifting.

[0037] As an implementation manner, operating arms 6 are spaced apart on both sides of the first connecting plate 41 , a first end of each operating arm 6 is fixed on the first connecting plate 41 , and an operating handle 60 is disposed at the second end of each operating arm 6 .

[0038] As an implementation manner, a control switch 61 for controlling the operation of the first driving member 30 is provided at the second end of each operating arm 6 .

[0039] It can be seen that a control switch 61 is provided on the operating arm 6, which is convenient for controlling the operation of the first driving member 30 and occupies a small space.

[0040] As an embodiment, the first end of the flip part 2 is hinged to the frame 1 through a hinge assembly 7, the hinge assembly 7 includes a hinge seat 70 and a hinge 71, the hinge seat 70 is fixedly mounted on the frame 1, and the first end of the flip part 2 is hinged to the hinge seat 70 through the hinge 71.

[0041] During press-fitting, the auxiliary press-fitting mechanism of the above-mentioned high-power magnetic levitation compression and expansion integrated machine: first, manually place the rotor shaft assembly in the assembly area of ​​the vertically arranged casing; secondly, manually control the operating handle 60, and under the hinged action of the flip part 2, drive the entire press-fitting part 3 to move to the specified press-fitting position; finally, operate the control switch 61 at the operating arm 6, and under the action of the control switch 61, the first driving member 30 drives the second connecting plate 4242 to descend until the four press-fitting blocks 310 press-fit the rotor shaft assembly to the assembly area of ​​the casing at the four corners.

[0042] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An auxiliary press-fitting mechanism of a high-power magnetic suspension compression-expansion integrated machine, used for press-fitting a rotor shaft assembly into a casing, wherein the rotor shaft assembly comprises a rotor shaft and at least one bearing mounted on the rotor shaft, characterized in that: The auxiliary press-fitting mechanism of the high-power magnetic suspension compression-expansion integrated machine comprises a frame, a turning part and a press-fitting part, wherein: The first end of the flip part is hinged on the frame, and the flip part can be flipped relative to the frame to a waiting position or a pressing position; The press-fitting part is arranged at the second end of the flip part, and the press-fitting part comprises a first driving member and a press-fitting member, wherein the fixed end of the first driving member is installed at the second end of the flip part, the driving end of the first driving member is connected to the press-fitting member, and the first driving member is configured to drive the press-fitting member to rise and fall; During press-fitting, the casing is vertically arranged directly below the press-fitting part. After the rotor shaft assembly is placed in the vertical casing, the first driving part drives the press-fitting part to descend to a preset height to abut against the rotor shaft assembly and press-fit and fix the rotor shaft assembly in the casing.

2. The auxiliary press-fitting mechanism of the high-power magnetic suspension compression and expansion integrated machine according to claim 1 is characterized in that: The waiting position is parallel to the frame, and the press-fitting position is perpendicular to the frame.

3. The auxiliary press-fitting mechanism of the high-power magnetic suspension compression and expansion integrated machine according to claim 2 is characterized in that: The press-fitting part is installed on a mounting seat, and the mounting seat includes a guide assembly, a first connecting plate and a second connecting plate. The first connecting plate is installed on the second end of the flip part and is located above the second connecting plate. The first end of the guide assembly is passed through the first connecting plate, and the second end of the guide assembly is fixedly installed on the second connecting plate. The fixed end of the first driving member is installed on the first connecting plate, and the driving end of the first driving member is connected to the second connecting plate. The press-fitting part is installed on the bottom surface of the second connecting plate, and the first driving member drives the second connecting plate to approach or move away from the first connecting plate to drive the press-fitting part to rise and fall.

4. The auxiliary press-fitting mechanism of the high-power magnetic suspension compression and expansion integrated machine according to claim 3 is characterized in that: The press-fitting part includes four press-fitting blocks, and the four press-fitting blocks are distributed at four corners of the second connecting plate in a rectangular shape.

5. The auxiliary press-fitting mechanism of the high-power magnetic suspension compression and expansion integrated machine according to claim 4 is characterized in that: The press-fitting part can be floatingly mounted on the second connecting plate through a buffer assembly, and the buffer assembly includes four sets of buffer parts. Each press-fitting block corresponds to a set of buffer parts. Each set of buffer parts includes a floating guide column and a return spring. The first end of the floating guide column is arranged through the second connecting plate and is located between the first connecting plate and the second connecting plate. The second end of the floating guide column is mounted on the corresponding press-fitting block, and the return spring is located between the first end of the floating guide column and the second connecting plate.

6. The auxiliary press-fitting mechanism of the high-power magnetic suspension compression and expansion integrated machine according to claim 3 is characterized in that: The guide assembly includes two guide rods arranged in parallel and at intervals, and a guide hole is opened on the first connecting plate corresponding to each guide rod. The first end of each guide rod can be raised and lowered in the corresponding guide hole, and the second end of each guide rod is installed on the second connecting plate.

7. The auxiliary press-fitting mechanism of the high-power magnetic suspension compression and expansion integrated machine according to claim 3 is characterized in that: Operating arms are arranged at intervals on both sides of the first connecting plate, a first end of each operating arm is fixed on the first connecting plate, and an operating handle is arranged at the second end of each operating arm.

8. The auxiliary press-fitting mechanism of the high-power magnetic suspension compression and expansion integrated machine according to claim 7 is characterized in that: A control switch for controlling the operation of the first driving member is arranged at the second end of each operating arm.

9. The auxiliary press-fitting mechanism of the high-power magnetic suspension compression and expansion integrated machine according to claim 1, characterized in that: The first end of the flip part is hinged to the frame through a hinge assembly, the hinge assembly includes a hinge seat and a hinge, the hinge seat is fixedly mounted on the frame, and the first end of the flip part is hinged to the hinge seat through the hinge.

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