Hoisting structure of compressor main shaft for heat treatment process

Abstract

The utility model discloses a hoisting structure of a compressor main shaft for a heat treatment process. The hoisting structure comprises a rotary connecting end, a hoisting end and a hoisting end, one end of the suspender is connected with one end, far away from the compressor main shaft, of the rotary connecting end, and a hoisting hole is formed in one end, far away from the rotary connecting end, of the suspender and connected with a hoisting hook. The hoisting structure can rotate the connecting end, hoisting of the compressor spindle is facilitated, the hoisting structure does not need to be disassembled during spindle heat treatment, and the hoisting efficiency of the compressor spindle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment of compressor main shafts, in particular to a hoisting structure of a compressor main shaft used in a heat treatment process. Background Art

[0002] During the processing of the compressor main shaft, it must be tempered in a heat treatment furnace. The mechanical performance parameters of the main shaft are adjusted through the heat treatment process so that the mechanical properties of the main shaft meet the performance requirements. The commonly used heat treatment process methods mainly include: normalizing, quenching, tempering, stabilization treatment, etc.

[0003] The compressor main shaft undergoes certain processing before heat treatment, namely, rough processing. In order to meet the hoisting requirements of the compressor main shaft to meet the furnace heat treatment conditions, radial process holes are drilled at appropriate positions on the main shaft during the rough processing of the main shaft. This hole is used to assist in the hoisting operation before and after the main shaft enters the furnace for heat treatment. After the heat treatment process of the main shaft is completed, the process hole is removed by turning.

[0004] At present, before the compressor main shaft enters the furnace, a process hole is bored on the main shaft to assist in the lifting of the compressor main shaft before entering the furnace and after leaving the furnace. The lifting device needs to be disassembled, which affects the lifting efficiency. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0006] In view of this, the utility model provides a lifting structure for a compressor main shaft used in a heat treatment process, wherein the lifting structure can rotate the setting of the connection end to facilitate the lifting of the compressor main shaft. When the compressor main shaft is heat treated, the lifting structure does not need to be disassembled, thereby improving the efficiency of lifting the compressor main shaft.

[0007] Specifically, the following technical solutions are included:

[0008] The utility model provides a lifting structure for a compressor main shaft used in a heat treatment process, the lifting structure comprising:

[0009] The rotating connection end is movably connected to the main shaft of the compressor;

[0010] A suspension rod, one end of which is connected to an end of the compressor main shaft away from the rotating connection end, and one end of the suspension rod away from the rotating connection end is provided with a suspension hole, and the suspension hole is connected to the hook.

[0011] Optionally, the rotating connection end includes:

[0012] A suspension fork, one end of which is connected to the compressor main shaft, and the other end of which is connected to the suspension rod;

[0013] A through rod passes through the suspension fork and the compressor main shaft.

[0014] Optionally, the suspension fork comprises a pair of side plates arranged opposite to each other, and a transverse plate for connecting the pair of side plates, the pair of side plates and the transverse plate form a accommodating cavity, the accommodating cavity is used to accommodate the compressor main shaft, the side plates are provided with mounting holes, the mounting holes are aligned with the process holes, and the through rod passes through the mounting holes and the process holes.

[0015] Optionally, a stepped groove is provided on one side of the transverse plate facing the accommodating cavity, and a center hole is provided at the center of the transverse plate;

[0016] The suspension rod includes a first clamping plate and a first connecting shaft which are connected to each other, the first clamping plate matches the stepped groove, and the first connecting shaft matches the center hole.

[0017] Optionally, the side panels and the transverse panels are connected via chamfer transition.

[0018] Optionally, the through rod includes a second clip-on plate and a second connecting shaft connected to each other, the size of the second clip-on plate is larger than the diameter of the second connecting shaft, the second connecting shaft passes through the mounting hole and the process hole, and a limiting hole is provided at one end of the second connecting shaft away from the second clip-on plate.

[0019] Optionally, the rotating connection end further includes:

[0020] The blocking column is L-shaped and is arranged in the limiting hole.

[0021] Optionally, the side of the side plate facing the compressor main shaft is in the shape of an isosceles trapezoid.

[0022] Optionally, the suspension fork is made of high-temperature alloy steel.

[0023] Optionally, the suspension rod and the through rod are made of austenitic stainless steel.

[0024] The embodiment of the utility model provides a lifting structure for a compressor main shaft in a heat treatment process, wherein the lifting structure includes a rotating connection end, which is movably connected to the compressor main shaft, so that the angle formed by the lifting rod and the compressor main shaft can be adjusted according to actual conditions, thereby improving the flexibility of lifting; one end of the lifting rod is connected to the rotating connection end, and the other end of the lifting rod is connected to the hook through a lifting hole. When the rotating connection end enters the heat treatment process along with the compressor main shaft, there is no need to disassemble the lifting device and the lifting structure. After the heat treatment process is completed, the lifting rod is directly lifted by the lifting device, so that the compressor main shaft is away from the heating furnace of the heat treatment process, thereby reducing the time for disassembly and assembly of the lifting device, improving the lifting efficiency, and thus improving the production efficiency of the compressor main shaft.

[0025] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 these drawings without creative work.

[0027] Figure 1 A schematic diagram of a hoisting structure according to an embodiment of the utility model;

[0028] Figure 2a A front view of a suspension fork according to an embodiment of the utility model;

[0029] Figure 2b A side view of a suspension fork according to an embodiment of the utility model;

[0030] Figure 3 is a schematic diagram of a suspension rod according to an embodiment of the utility model;

[0031] Figure 4 is a schematic diagram of a penetration rod according to an embodiment of the utility model;

[0032] Figure 5 is a schematic diagram of a blocking column according to an embodiment of the utility model;

[0033] Figure 6a It is a schematic diagram of a hoisting structure according to an embodiment of the utility model at a first angle;

[0034] Figure 6b A schematic diagram of a hoisting structure according to a second angle of an embodiment of the utility model;

[0035] Figure 6c It is a schematic diagram of the hoisting from a third angle of the hoisting structure according to an embodiment of the utility model.

[0036] in, Figures 1 to 6c The corresponding relationship between the reference numerals and the component names is as follows:

[0037] 100 lifting structure, 110 rotating connection end, 111 suspension fork, 1111 side plate, 1112 cross plate, 1113 accommodating cavity, 1114 mounting hole, 1115 stepped groove, 1116 center hole, 1117 chamfer, 112 through rod, 1121 second clamping plate, 1122 second connecting shaft, 1123 limiting hole, 113 blocking column, 1131 cross bar, 1132 vertical bar, 1133 transition arc, 120 lifting rod, 121 first clamping plate, 122 first connecting shaft, 123 lifting hole, 200 compressor main shaft, 300 lifting device. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] Before further describing the implementation modes of the present invention in detail, the directional nouns involved in the implementation modes of the present invention, such as "upper part", "lower part" and "side part", do not have the meaning of limiting the protection scope of the present invention.

[0040] In order to make the technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0041] Figure 1 It is a schematic diagram of a lifting structure according to an embodiment of the utility model.

[0042] like Figure 1 As shown, one embodiment of the utility model provides a lifting structure 100 for a compressor main shaft used in a heat treatment process, and the lifting structure 100 includes:

[0043] The rotating connecting end 110 is movably connected to the compressor main shaft 200;

[0044] The suspension rod 120 has one end connected to the rotation connection end 110 away from the compressor main shaft 200, and the end of the suspension rod 120 away from the rotation connection end 110 is provided with a lifting hole 123, and the lifting hole 123 is connected to the hook.

[0045] Among them, the lifting structure 100 includes a rotating connection end 110, which is movably connected to the compressor main shaft 200, so that the angle formed by the suspension rod 120 and the compressor main shaft 200 can be adjusted according to actual conditions, thereby improving the flexibility of lifting; one end of the suspension rod 120 is connected to the rotating connection end 110, and the other end of the suspension rod 120 is connected to the hook through the lifting hole 123. When the rotating connection end 110 enters the heat treatment process along with the compressor main shaft 200, there is no need to disassemble the hook of the lifting device 300 and the lifting structure 100. After the heat treatment process is completed, the suspension rod 120 is directly lifted by the hook of the lifting device 300, so that the compressor main shaft 200 is away from the heating furnace of the heat treatment process, which reduces the time for disassembly and assembly of the lifting device 300, improves the lifting efficiency, and thus improves the production efficiency of the compressor main shaft 200.

[0046] Specifically, the rotating connection end 110 and the compressor main shaft 200 can be movably connected, and the suspension rod 120 can also rotate in the rotating connection end 110. Therefore, in the process of hoisting the compressor main shaft 200 through the hook of the hoisting device 300, it is more flexible to use, and the compressor main shaft 200 can be slowly converted from a horizontal state to a vertical state, and the compressor main shaft 200 can be sent to the heating furnace for heat treatment. Through the movable connection between the rotating connection end 110 and the compressor main shaft 200, and the movable connection between the suspension rod 120 and the rotating connection end 110, the hoisting space occupied can be reduced during the initial hoisting. At the same time, during the initial hoisting, the load-bearing capacity of the hoisting device 300 can be reduced, thereby improving the hoisting flexibility of the hoisting device 300.

[0047] It is understandable that the hoisting hole 123 is a waist-shaped hole, which is more convenient for hoisting the hook of the hoisting device 300.

[0048] In a feasible implementation manner, the rotating connection end 110 includes:

[0049] A suspension fork 111, one end of the suspension fork 111 is connected to the compressor main shaft 200, and the other end of the suspension fork 111 is connected to the suspension rod 120;

[0050] The penetrating rod 112 passes through the suspension fork 111 and the compressor main shaft 200 .

[0051] Among them, the rotating connection end 110 includes a suspension fork 111, which is sleeved on one end of the compressor main shaft 200. A through rod 112 passes through the suspension fork 111 and the compressor main shaft 200, so that the suspension fork 111 can rotate around the axis of the through rod 112 on the compressor main shaft 200, thereby making the rotating connection end 110 movably connected to the compressor main shaft 200, thereby improving the flexibility of lifting.

[0052] Figure 2a A front view of a suspension fork according to an embodiment of the utility model; Figure 2b It is a side view of a suspension fork according to an embodiment of the utility model.

[0053] In a possible implementation, Figure 2a and Figure 2b As shown, the suspension fork 111 is provided with a pair of side plates 1111 opposite to each other, and a transverse plate 1112 for connecting the pair of side plates 1111; the pair of side plates 1111 and the transverse plate 1112 form an accommodating cavity 1113; the accommodating cavity 1113 is used to accommodate the compressor main shaft 200; the side plates 1111 are provided with mounting holes 1114; the mounting holes 1114 are aligned with the process holes; the through rod 112 passes through the mounting holes 1114 and the process holes.

[0054] Among them, a pair of side plates 1111 and a cross plate 1112 of the suspension fork 111 form the suspension fork 111 into a U shape, that is, forming an accommodating chamber 1113. The compressor main shaft 200 is located in the accommodating chamber 1113, and when the suspension fork 111 rotates around the through rod 112, since the two sides of the accommodating chamber 1113 are not closed, the compressor main shaft 200 can swing back and forth on the two unclosed sides of the accommodating chamber 1113, thereby improving the flexibility of lifting.

[0055] It should be noted that a mounting hole 1114 is provided on the side plate 1111, and the mounting hole 1114 is aligned with the process hole. At the same time, the distance between a pair of side plates 1111 is larger than the diameter of the compressor main shaft 200. In other words, there is a clearance fit between the compressor main shaft 200 and the pair of side plates 1111. Such a setting can avoid friction between the compressor main shaft 200 and the side plates 1111 during hoisting, which can prevent wear on the compressor main shaft 200 and affect the subsequent installation of the compressor main shaft 200.

[0056] It can be understood that the side of the compressor main shaft 200 facing the cross plate 1112 is at a first distance from the hanging rod 120 entering the suspension fork 111. The setting of the first distance can avoid the interference between the rotation of the compressor main shaft 200 and the hanging rod 120 during lifting, thereby ensuring the integrity of the compressor main shaft 200 and facilitating the subsequent installation of the compressor main shaft 200.

[0057] Figure 3 It is a schematic diagram of a suspension rod according to an embodiment of the utility model.

[0058] In a possible implementation, Figure 2a and Figure 3 As shown, a stepped groove 1115 is provided on one side of the transverse plate 1112 facing the accommodating cavity 1113, and a center hole 1116 is provided at the center of the transverse plate 1112;

[0059] The suspension rod 120 includes a first clamping plate 121 and a first connecting shaft 122 which are connected to each other. The first clamping plate 121 matches the stepped groove 1115 , and the first connecting shaft 122 matches the center hole 1116 .

[0060] Among them, the suspension rod 120 includes a first clamping plate 121 and a first connecting shaft 122 which are connected to each other. The diameter of the first connecting shaft 122 is smaller than the size of the first clamping plate 121. The first clamping plate 121 is arranged in the stepped groove 1115, and the first connecting shaft 122 is located in the center hole 1116. The first connecting shaft 122 and the center hole 1116 are clearance-matched, which is convenient for the installation and replacement of the suspension rod 120 on the one hand, and can improve the flexibility of lifting on the other hand.

[0061] It should be noted that the first clamping plate 121 can be set to be cylindrical, and the stepped groove 1115 is also cylindrical. When the first clamping plate 121 is a rectangular parallelepiped, the stepped groove 1115 is a rectangular parallelepiped, that is, the shape of the first clamping plate 121 matches the stepped groove 1115, and the first clamping plate 121 and the stepped groove 1115 are also clearance-matched, which can facilitate the installation and replacement of the suspension rod 120. The length of the first connecting shaft 122 is usually set according to the relevant parameters of the heat treatment furnace, which will not be repeated here.

[0062] Among them, the thickness of the first clamping plate 121 is greater than the depth of the stepped groove 1115. Through the arrangement of the stepped groove 1115 and the first clamping plate 121, the central axis of the first connecting shaft 122 can be basically consistent with the central axis of the central hole 1116. In this application, the central axis is basically consistent, which means that the deviation angle of the central axis does not exceed ±1°. In other words, the suspension rod 120 is arranged into a structure of the first clamping plate 121 and the first connecting shaft 122 to prevent the suspension rod 120 from falling off from the suspension fork 111 when the compressor main shaft 200 is hoisted, so that the suspension rod 120 and the suspension fork 111 are basically in a coaxial state during the process of hoisting the compressor main shaft 200 from a horizontal state to a vertical state, thereby ensuring safety during the hoisting process.

[0063] It can be understood that the above-mentioned first distance refers to the distance between the side of the compressor main shaft 200 facing the first clamping plate 121 and the side of the first clamping plate 121 facing the compressor main shaft 200. That is to say, when the first clamping plate 121 is located in the step groove 1115 during hoisting, there is a certain distance between it and the compressor main shaft 200, so as to avoid interference during the hoisting process to cause wear to the compressor main shaft 200 and affect the subsequent installation of the compressor main shaft 200.

[0064] In a possible implementation, Figure 2a As shown, the side plate 1111 and the transverse plate 1112 are transitionally connected via the chamfer 1117 .

[0065] Among them, the side plate 1111 and the cross plate 1112 in the accommodating cavity 1113 are transitionally connected by chamfers 1117, and the side plate 1111 and the cross plate 1112 outside the accommodating cavity 1113 are connected by arc transition. Such a setting can avoid stress concentration of the suspension fork 111 during the heat treatment process when the suspension fork 111 and the compressor main shaft 200 are heat treated together, avoid the occurrence of cracking during high temperature, increase the service life of the suspension fork 111, and thus ensure the safety of the lifting structure 100.

[0066] It should be noted that the included angle between the chamfer 1117 and the transverse plate 1112 is 30° to 60°, and is 45° in this embodiment.

[0067] It can be understood that the suspension fork 111 is made of an integral molding, which can ensure the strength of the suspension fork 111 and further improve the service life of the suspension fork 111 and the safety of the suspension structure 100 .

[0068] Figure 4 It is a schematic diagram of a penetration rod according to an embodiment of the utility model.

[0069] In a possible implementation, Figure 4 As shown, the through rod 112 includes a second clip-on plate 1121 and a second connecting shaft 1122 which are connected to each other. The size of the second clip-on plate 1121 is larger than the diameter of the second connecting shaft 1122. The second connecting shaft 1122 passes through the mounting hole 1114 and the process hole. A limiting hole 1123 is provided at one end of the second connecting shaft 1122 away from the second clip-on plate 1121.

[0070] Among them, the through rod 112 includes a second clamping plate 1121 and a second connecting shaft 1122. The diameter of the second connecting shaft 1122 is smaller than the size of the second clamping plate 1121. The second connecting shaft 1122 of the through rod 112 passes through the mounting hole 1114 of the suspension fork 111 and the process hole of the compressor main shaft 200 to realize the connection between the suspension fork 111 and the compressor main shaft 200. Through the setting of the second clamping plate 1121, the through rod 112 is clamped on one side of one of the side plates 1111, which can prevent the through rod 112 from falling off and improve the reliability of the connection of the through rod 112.

[0071] It should be noted that, in the present embodiment, the second clamping plate 1121 is cylindrical, but in practice the second clamping plate 1121 may also be other shapes.

[0072] Figure 5 It is a schematic diagram of a blocking column according to an embodiment of the utility model.

[0073] In a possible implementation, Figure 5 As shown, the rotating connection end 110 also includes:

[0074] The blocking column 113 is L-shaped and is disposed in the limiting hole 1123 .

[0075] Among them, one end of the through rod 112 is limited by the second clamping plate 1121, and a limiting hole 1123 is provided on the other end of the through rod 112. The blocking column 113 is inserted into the limiting hole 1123 to limit the other end of the through rod 112, thereby ensuring the reliability of the suspension fork 111 and the compressor main shaft 200 connected to the through rod 112.

[0076] It should be noted that the blocking column 113 includes a vertically arranged cross bar 1131 and a vertical bar 1132. Usually, the vertical bar 1132 and the cross bar 1131 are transitionally connected by a transition arc 1133 to avoid friction between the blocking column 113 and the through rod 112. Usually, the diameter of the cross bar 1131 and the vertical bar 1132 is 20mm to 23mm, and the diameter of the limiting hole 1123 is 24mm to 26mm, that is, the limiting hole 1123 and the blocking column 113 are clearance-matched. When the compressor main shaft 200 is placed horizontally, the cross bar 1131 of the blocking column 113 is located above the through rod 112, so that the limiting function of the blocking column 113 can be ensured. The length of the vertical bar 1132 should be greater than 160mm. In this way, during the hoisting process, even if the blocking column 113 moves slightly, it will not fall off from the limiting hole 1123, which reduces the processing difficulty of the blocking column 113 and improves the economy of the hoisting structure 100.

[0077] In a feasible implementation manner, the side of the side plate 1111 facing the compressor main shaft 200 is in an isosceles trapezoidal shape.

[0078] Among them, the side of the side plate 1111 facing the compressor main shaft 200 is in the shape of an isosceles trapezoid, that is, the projection of the side plate 1111 is a combination of a rectangle and an isosceles trapezoid, and the upper base of the isosceles trapezoid faces one side of the compressor main shaft 200. Such a setting can reduce the weight of the suspension fork 111 while ensuring the function of the suspension fork 111, thereby reducing the power of the suspension device 300 and being more energy-efficient.

[0079] In a feasible implementation manner, the suspension fork 111 is made of high-temperature alloy steel.

[0080] Among them, high temperature alloy steel has good high temperature resistance and corrosion resistance, and high temperature alloy steel also has high strength.

[0081] In this embodiment, the suspension fork 111 is made of ZG1Cr25Ni20Si2, which is a high-temperature casting made of stainless steel and is mainly used in situations where it is subjected to heavy pressure and corrosion in a high-temperature environment. With excellent high-temperature resistance, the ZG1Cr25Ni20Si2 casting can work stably for a long time at high temperatures, has excellent fire resistance and wear resistance, and can withstand high pressure and impact in a high-temperature environment; it can resist the erosion of corrosive media such as acids and alkalis, ensuring the long-term stable operation of the suspension fork; it can prevent the material from being damaged by oxidation, extending the service life of the suspension fork; it can meet the needs of different users, has good plasticity and forgeability, and is easy to form and process. In other words, the suspension fork 111 made of this material can improve the performance of the hoisting structure 100, and is more conducive to the suspension fork 111 entering the heat treatment process together with the compressor main shaft 200, and can still ensure the subsequent normal and effective operation of the suspension fork 111.

[0082] In a feasible implementation manner, the material of the suspension rod 120 and the through rod 112 is austenitic stainless steel.

[0083] Among them, austenitic stainless steel has good corrosion resistance, high toughness and good welding performance, and austenitic stainless steel is easy to process.

[0084] In this embodiment, the suspension rod 120, the through rod 112 and the blocking column 113 are made of S30408, which has the characteristics of high corrosion resistance, high strength and good processing performance.

[0085] It should be noted that the cost of ZG1Cr25Ni20Si2 is relatively high, so the free key load-bearing member suspension fork 111 adopts this material to increase the service life of the suspension fork 111, thereby increasing the overall service life of the lifting structure 100. The suspension rod 120, the through rod 112 and the stop column 113 are non-key load-bearing parts in the lifting structure 100, but still need to participate in the heat treatment process of the compressor main shaft 200. Therefore, the suspension rod 120, the through rod 112 and the stop column 113 are made of austenitic stainless steel. On the one hand, such a setting can meet the working requirements of the lifting structure 100, and on the other hand, it can also effectively reduce the cost of the lifting structure 100 and improve the economy of the production of the compressor main shaft 200.

[0086] Figure 6a It is a schematic diagram of a hoisting structure according to an embodiment of the utility model at a first angle; Figure 6b A schematic diagram of a hoisting structure according to a second angle of an embodiment of the utility model; Figure 6c It is a schematic diagram of the hoisting from a third angle of the hoisting structure according to an embodiment of the utility model.

[0087] In specific use, such as Figures 6a to 6c As shown, before hoisting, the compressor main shaft 200 is placed horizontally, and the suspension rod 120 is first installed in the central hole 1116 of the suspension fork 111 and is sleeved on one end of the compressor main shaft 200. Then, the through rod 112 penetrates the installation hole 1114 and the process hole, and the blocking column 113 is inserted into the limiting hole 1123 of the through rod 112 to realize the installation of the hoisting structure 100 and the compressor main shaft 200. The hook of the hoisting device 300 is connected with the hoisting hole 123 of the suspension rod 120. At this time, driven by the hoisting device 300, the hoisting structure 100 and the compressor main shaft 200 are basically vertical, as shown in FIG. Figure 6a The hoisting device 300 is hoisted, and during this process the compressor main shaft 200 gradually changes to a vertical state, that is, the angle between the compressor main shaft 200 and the hoisting structure 100 gradually increases, as shown in FIG. Figure 6b When the compressor main shaft 200 is completely hoisted, the compressor main shaft 200 is in a vertical state. At this time, the compressor main shaft 200 and the hoisting structure 100 are in a straight line, that is, the angle between the compressor main shaft 200 and the hoisting structure 100 is basically 180°, as shown in FIG. Figure 6c The compressor main shaft 200 enters the heating furnace for heat treatment. At this time, the hoisting device 300 does not need to be unhooked. After the heat treatment is completed, the hoisting device 300 takes out the compressor main shaft 200 through the hoisting structure 100 and then hoists it to a centralized storage location. At this time, the compressor main shaft 200 slowly changes from a vertical state to a horizontal state.

[0088] In the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0089] Those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the present invention disclosed herein. The present invention is intended to cover any variation, use, or adaptation of the present invention that follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and examples are to be regarded as exemplary only.

[0090] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting structure for a compressor main shaft used in a heat treatment process, wherein a process hole is provided on the compressor main shaft, characterized in that: The hoisting structure comprises: The rotating connection end is movably connected to the main shaft of the compressor; A suspension rod, one end of which is connected to an end of the compressor main shaft away from the rotating connection end, and one end of the suspension rod away from the rotating connection end is provided with a suspension hole, and the suspension hole is connected to a suspension hook.

2. The lifting structure of the compressor main shaft used in the heat treatment process according to claim 1 is characterized in that: The rotating connection end comprises: A suspension fork, one end of which is connected to the compressor main shaft, and the other end of which is connected to the suspension rod; A through rod passes through the suspension fork and the compressor main shaft.

3. The lifting structure of the compressor main shaft used in the heat treatment process according to claim 2 is characterized in that: The suspension fork comprises a pair of side plates arranged opposite to each other, and a transverse plate used to connect the pair of side plates. The pair of side plates and the transverse plate form a receiving cavity, and the receiving cavity is used to receive the compressor main shaft. The side plates are provided with mounting holes, and the mounting holes are aligned with the process holes. The through rod passes through the mounting holes and the process holes.

4. The lifting structure of the compressor main shaft used in the heat treatment process according to claim 3 is characterized in that: A stepped groove is provided on one side of the transverse plate facing the accommodating cavity, and a center hole is provided at the center of the transverse plate; The suspension rod includes a first clamping plate and a first connecting shaft which are connected to each other, the first clamping plate matches the stepped groove, and the first connecting shaft matches the center hole.

5. The lifting structure of the compressor main shaft used in the heat treatment process according to claim 3 is characterized in that: The side panels and the transverse panels are connected via chamfer transition.

6. The lifting structure of the compressor main shaft used in the heat treatment process according to claim 3, characterized in that: The through rod includes a second clamping plate and a second connecting shaft connected to each other. The size of the second clamping plate is larger than the diameter of the second connecting shaft. The second connecting shaft passes through the mounting hole and the process hole. A limiting hole is provided at one end of the second connecting shaft away from the second clamping plate.

7. The lifting structure of the compressor main shaft used in the heat treatment process according to claim 6, characterized in that: The rotating connection end also includes: The blocking column is L-shaped and is arranged in the limiting hole.

8. The lifting structure of the compressor main shaft used in the heat treatment process according to claim 3, characterized in that: The side of the side plate facing the compressor main shaft is in an isosceles trapezoidal shape.

9. The lifting structure of the compressor main shaft used in the heat treatment process according to any one of claims 2 to 8, characterized in that: The material of the suspension fork is high temperature alloy steel.

10. The lifting structure of the compressor main shaft used in the heat treatment process according to any one of claims 2 to 8, characterized in that: The material of the suspension rod and the penetration rod is austenitic stainless steel.

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