Hoisting device for long-shaft parts

Abstract

The invention discloses a long-shaft part hoisting device, which belongs to the technical field of aero-engine part processing, and comprises an adapter, a support plate, a cross beam assembly and a safety shackle. The first end of the adapter is used for being connected with a connecting screw hole preset in the end face of a long-shaft part through a connecting bolt; the lower portion of the side, facing the long-axis part, of the supporting plate is connected with the second end of the adapter, the upper portion of the same side of the supporting plate is connected with the first end of the cross beam assembly, the cross beam assembly and the adapter are arranged in parallel, the safety shackle is detachably arranged at the end, away from the supporting plate, of the cross beam assembly, and the safety shackle is used for being externally connected with a hoisting mechanism; the cross beam assembly is of a telescopic structure and can drive the safety shackle to be away from or close to the supporting plate. According to the hoisting device, the adapter piece is in butt joint with the end face of the long-shaft part, the supporting plate and the cross beam assembly are matched with the adapter piece to form a hoisting mode based on the lever balance principle, horizontal and stable hoisting of the part is kept, and assembling of the long-shaft part is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of aerospace engine parts processing, and in particular, to a long-axis parts lifting device. Background Art

[0002] The information provided in this section is for the purpose of generally presenting the background of the present application. To the extent described in this section, the work of the presently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly admitted to be prior art to the present application.

[0003] In the field of aircraft engine parts assembly, it is necessary to use the output shaft horizontal lifting tooling to horizontally lift the output shaft unit body into the shaft cavity of the power turbine unit body so that the internal and external splines are engaged, which belongs to the thin-walled long shaft horizontal lifting working condition. The output shaft unit body of some models can be up to 2 meters long and weigh up to 30kg. Due to the space limitation inside the power turbine unit body, it is necessary to ensure that the output shaft unit body is always in a horizontal state during the lifting process in the tooling design. Therefore, the selection of the lifting force position is the key to the design to ensure the stability of the lifting.

[0004] There are related transfer devices for long-axis parts disclosed in the prior art, such as a Chinese patent with patent number CN210709582U, which discloses a running fixture for long-axis parts, including a transfer connector, a transfer frame and two long-axis fixing clamps; the long-axis fixing clamps include two upper half rings, two lower half rings and a plurality of countersunk bolts; each upper half ring and a lower half ring are arranged opposite to each other to form a circular ring through connecting bolts, the two circular rings are arranged close to the frame of the transfer frame, and each upper half ring is fixedly connected to the transfer frame through a plurality of countersunk bolts, and the transfer connector is fixedly connected to the transfer frame. This solution is used for the transfer of long-axis parts, and can solve the problem that long-axis parts are usually directly lifted with slings during lifting, which is prone to the center of gravity shift of the parts during the lifting process, and then causes the parts to slip out of the slings, causing safety accidents. However, the above scheme is only specifically used for transfer work, and it is difficult to apply to the scene of horizontal lifting and assembly of long-axis parts that need to be stably clamped.

[0005] After research, we found that the existing lifting process has the following difficulties: 1. The output shaft unit of the existing part is about 2 meters long and is a thin-walled long shaft part. There is no force position in the upper part of the part, and it is difficult to ensure the overall stability during the lifting process; 2. According to the existing process regulations, the fixed position of the tooling and the part is selected at the flange on the right side of the output shaft unit. After the output shaft unit is installed into the power turbine unit, the fixing part of the hoist and the part is located inside the shaft cavity of the power turbine unit. After the assembly is completed, the fasteners at the connection position between the tooling and the output shaft unit cannot be removed due to limited operation, making it impossible to disassemble the tooling and the part.

[0006] In order to ensure the stability of horizontal lifting of thin-walled long-axis parts, and at the same time meet the lifting requirements, it is also necessary to simplify the tooling structure to reduce manufacturing difficulty, reduce processing costs, and reduce delivery node pressure. It is necessary to design a stable and efficient lifting device in a targeted manner.

[0007] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0008] In view of at least one of the above technical problems, the present application provides a long-axis parts lifting device, which can connect the end face of the long-axis parts through an adapter, and form a lifting method using the lever balance principle through the support plate and crossbeam assembly in conjunction with the adapter, thereby maintaining the horizontal and stable lifting of the parts and facilitating the assembly of long-axis parts.

[0009] According to one aspect of the present application, a long shaft parts lifting device is provided, including an adapter, a support plate, a crossbeam assembly and a safety shackle:

[0010] The first end of the adapter is used to connect with the connection screw hole preset on the end face of the long shaft part through the connection bolt, the lower part of the support plate facing the long shaft part is connected to the second end of the adapter, and the upper part of the same side of the support plate is connected to the first end of the crossbeam assembly, the crossbeam assembly and the adapter are arranged in parallel, and the safety shackle is detachably arranged on the end of the crossbeam assembly away from the support plate, and the safety shackle is used for external lifting mechanism;

[0011] The crossbeam assembly is a retractable structure, and the crossbeam assembly can drive the safety shackle away from or close to the support plate.

[0012] In some embodiments of the present application, the second end of the adapter is connected to the support plate through a connecting bolt, and the upper part of the support plate is connected to the first end of the beam assembly through a connecting bolt.

[0013] In some embodiments of the present application, the beam assembly includes a first beam, a second beam and a locking member, the first end of the first beam is connected to the side wall of the support plate, the end face of the second end of the first beam is provided with a first limiting cavity, the first end of the second beam is provided with a first limiting rod, the first limiting rod is used to be slidably connected to the first limiting cavity, the side wall of the first limiting cavity is provided with a limiting screw hole, the locking member is used to be threadedly connected to the limiting screw hole and tighten the first limiting rod after passing through the limiting screw hole to lock and limit the first beam and the second beam, and the safety shackle is provided on the second beam.

[0014] In some embodiments of the present application, a plurality of connecting through holes are provided on the second cross beam along its axial direction, and the connecting through holes are used to set a locking member, and the safety shackle is connected to the second cross beam by the locking member cooperating with one of the connecting through holes.

[0015] In some embodiments of the present application, a plurality of mounting platforms are provided in a circular array on the side wall of the first end of the adapter, and each mounting platform is provided with a mounting screw hole. The mounting screw hole is used to dock with the preset connecting screw hole on the end face of the long axis part, and the adapter is connected to the long axis part by passing the connecting bolts through the mounting screw hole and the connecting screw hole.

[0016] In some embodiments of the present application, a circle of limiting sliding grooves is provided on the side wall of the first end of the adapter, and each mounting platform is slidably disposed in the limiting sliding grooves and slides circumferentially around the axis of the adapter.

[0017] In some embodiments of the present application, the long-axis part lifting device also includes a retractable mandrel assembly, the first end of the mandrel assembly is used to connect to the first end of the adapter, and the second end of the mandrel assembly is used to insert into the inner hole of the long-axis part and support it.

[0018] In some embodiments of the present application, the core shaft assembly includes a first connecting shaft, a second connecting shaft and a connecting piece, the first end of the connecting piece is rotatably connected to the inner hole of the first connecting shaft, the second end of the connecting piece is threadedly connected to the inner hole of the second connecting shaft, and the long-axis parts lifting device also includes an adjusting piece, which is used to extend into the inner hole of the first connecting shaft and engage with the connecting piece, and drive the connecting piece to rotate to adjust the distance between the first connecting shaft and the second connecting shaft.

[0019] In some embodiments of the present application, a bearing is provided on the inner wall of the inner hole of the first connecting shaft, and the first end of the connecting member is connected to the bearing; a connecting boss is provided on the inner wall of the inner hole of the second connecting shaft, and the inner wall of the connecting boss is threadedly connected to the outer wall of the connecting member; a second limiting cavity is provided on the end face of the second connecting shaft close to the first connecting shaft, and a second limiting rod is provided on the end face of the first connecting shaft close to the second connecting shaft, and the second limiting rod is slidably connected to the second limiting cavity.

[0020] In some embodiments of the present application, a limiting groove is provided at one end of the connecting member close to the first connecting shaft, and a snap-fitting boss is provided at the first end of the adjusting member, and the snap-fitting boss is used to snap-fit ​​with the limiting groove.

[0021] This application has the following beneficial effects:

[0022] The present application discloses a long-axis part lifting device that docks with the end face of the long-axis part through an adapter, and the upper and lower parts of the same side wall of the support plate are respectively connected to the crossbeam assembly and the adapter, so as to realize the parallel arrangement of the crossbeam assembly, the adapter and the long-axis part, that is, the crossbeam assembly, the support plate, the adapter and the long-axis part form a loop structure, and the stable horizontal lifting of the long-axis part can be realized by utilizing the principle of lever balance, and the insertion-type assembly of the long-axis part from one end is not interfered. After the parts are assembled, the lifting device can be quickly and conveniently disassembled from one end of the parts, which is very convenient for the assembly of the long-axis parts and ensures the smooth assembly. The overall working structure of the present application is streamlined, and the manufacturing difficulty is effectively controlled, which is conducive to reducing processing costs and alleviating the pressure on delivery nodes.

[0023] Of course, any product implementing this application does not necessarily need to achieve all the advantages described above at the same time. In addition to the purposes, features and advantages described above, this application also has other purposes, features and advantages. The following will further describe this application in detail with reference to the figures. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 It is a schematic diagram of the overall structure of the preferred embodiment of the present application;

[0026] Figure 2 It is a schematic diagram of the installation of the safety shackle of the preferred embodiment of the present application;

[0027] Figure 3 This is a working schematic diagram of the hoisting output shaft unit of the preferred embodiment of the present application;

[0028] Figure 4 It is a schematic diagram of the installation of the adapter of the preferred embodiment of the present application;

[0029] Figure 5 This is a schematic diagram of the connection between the adapter and the output shaft unit in a preferred embodiment of the present application;

[0030] Figure 6 It is a schematic diagram of the cooperation between the core shaft assembly and the output shaft unit body in the preferred embodiment of the present application;

[0031] Figure 7 It is a schematic diagram of the installation of the mandrel assembly of the preferred embodiment of the present application;

[0032] Figure 8 is a structural schematic diagram of a mandrel assembly in a preferred embodiment of the present application;

[0033] Fig. 9 It is a schematic diagram of the installation of the connecting piece of the preferred embodiment of the present application;

[0034] Fig.10 It is a structural schematic diagram of an adjusting member of a preferred embodiment of the present application;

[0035] Fig.11 It is a schematic diagram of the position of the limiting groove in the preferred embodiment of the present application;

[0036] Legend: 100, output shaft unit; 200, power turbine shaft cavity; 1, adapter; 11, mounting platform; 12, mounting screw hole; 2, support plate; 3, beam assembly; 31, first beam; 311, first limit cavity; 32, second beam; 321, first limit rod; 4, safety shackle; 5, connecting bolt; 6, locking member; 7, spindle assembly; 71, first connecting shaft; 711, second limit rod; 712, bearing; 72, second connecting shaft; 721, second limit cavity; 722, connecting boss; 73, connecting member; 731, limit groove; 8, adjusting member; 81, snap-on boss; 82, handle. DETAILED DESCRIPTION

[0037] The embodiments of the present application are described in detail below in conjunction with the accompanying drawings, but the present application can be implemented in a variety of different ways defined and covered below.

[0038] Figure 1 It is a schematic diagram of the overall structure of the preferred embodiment of the present application; Figure 2 It is a schematic diagram of the installation of the safety shackle of the preferred embodiment of the present application; Figure 3 This is a working schematic diagram of the hoisting output shaft unit of the preferred embodiment of the present application; Figure 4 It is a schematic diagram of the installation of the adapter of the preferred embodiment of the present application; Figure 5 This is a schematic diagram of the connection between the adapter and the output shaft unit in a preferred embodiment of the present application; Figure 6 It is a schematic diagram of the cooperation between the spindle assembly and the output shaft unit body in the preferred embodiment of the present application; Figure 7 It is a schematic diagram of the installation of the mandrel assembly of the preferred embodiment of the present application; Figure 8 is a structural schematic diagram of a mandrel assembly in a preferred embodiment of the present application; Fig. 9 It is a schematic diagram of the installation of the connecting piece of the preferred embodiment of the present application; Fig.10 It is a structural schematic diagram of an adjusting member of a preferred embodiment of the present application; Fig.11 It is a schematic diagram of the position of the limiting groove of the preferred embodiment of the present application.

[0039] A long shaft parts lifting device comprises an adapter 1, a support plate 2, a crossbeam assembly 3 and a safety shackle 4:

[0040] The first end of the adapter 1 is used to connect with the connection screw hole preset on the end face of the long shaft part through the connection bolt 5, the lower part of the support plate 2 facing the long shaft part is connected to the second end of the adapter 1, and the upper part of the same side of the support plate 2 is connected to the first end of the crossbeam assembly 3, the crossbeam assembly 3 is arranged in parallel with the adapter 1, and the safety shackle 4 is detachably arranged on the end of the crossbeam assembly 3 away from the support plate 2, and the safety shackle 4 is used for external lifting mechanism;

[0041] The crossbeam assembly 3 is a retractable structure, and the crossbeam assembly 3 can drive the safety shackle 4 to move away from or close to the support plate 2 .

[0042] Here, the meaning of "adapter 1" refers to a structure connected to the end face of a long shaft part. In some embodiments, the adapter 1 is a disc-type structure with a hole in the middle. The adapter 1 is used to connect the long shaft part to the support plate 2, thereby forming a loop structure with the crossbeam assembly 3. The stable horizontal lifting of the long shaft part can be achieved by using the lever balance principle. If the adapter 1 is connected to one end of the output shaft unit 100, the output shaft unit 100 can be stably lifted and assembled into the power turbine shaft cavity 200 through the lifting device of the present application. After the assembly is completed, the adapter 1 can be conveniently disconnected and disassembled. The fixing parts of the hanger and the output shaft unit 100 will not be located inside the power turbine shaft cavity 200, so the disassembly of the tooling and parts can be facilitated, reducing the impact on subsequent processes.

[0043] The present application discloses a long-axis part lifting device that docks with the end face of the long-axis part through an adapter 1, and the upper and lower parts of the same side wall of the support plate 2 are respectively connected to the crossbeam assembly 3 and the adapter 1, so as to realize the parallel arrangement of the crossbeam assembly 3, the adapter 1 and the long-axis part, that is, the crossbeam assembly 3, the support plate 2, the adapter 1 and the long-axis part form a loop structure, and the stable horizontal lifting of the long-axis part can be realized by using the principle of lever balance, and the insertion-type assembly of the long-axis part from one end is not interfered. After the parts are assembled, the lifting device can be quickly and conveniently disassembled from one end of the parts, which is very convenient for the assembly of the long-axis parts and ensures the smooth assembly. The overall working structure of the present application is streamlined, and the manufacturing difficulty is effectively controlled, which is conducive to reducing processing costs and relieving delivery node pressure.

[0044] Preferably, please refer to Figure 1 , 3 As shown in , 4 , the second end of the adapter 1 is connected to the support plate 2 via a connecting bolt 5 , and the upper portion of the support plate 2 is connected to the first end of the crossbeam assembly 3 via a connecting bolt 5 .

[0045] It can be understood that the upper and lower parts of the same side of the support plate 2 are respectively connected to the beam assembly 3 and the adapter 1 by connecting bolts 5, so that the detachable connection between the beam assembly 3 and the adapter 1 can be achieved, so that the entire lifting device is modularly designed, which is convenient for the maintenance and replacement of different modules, and easy to replace different modules to adapt to different lifting requirements, which is conducive to improving the adaptability of the device.

[0046] It should be noted that since the lifting device of the present application is used in heavy lifting conditions, compared with the welding connection between the support plate 2, the beam assembly 3 and the adapter 1, a detachable connection method fastened with bolts is adopted, which is beneficial to reduce the deformation of the lifting device body while facilitating the disassembly of the lifting device and parts, thereby shortening the process route.

[0047] Preferably, please refer to Figure 1 , 2 As shown in Figures 3, 4 and 5, the beam assembly 3 includes a first beam 31, a second beam 32 and a locking member. The first end of the first beam 31 is connected to the side wall of the support plate 2, and the end surface of the second end of the first beam 31 is provided with a first limiting cavity 311. The first end of the second beam 32 is provided with a first limiting rod 321, and the first limiting rod 321 is used for sliding connection with the first limiting cavity 311. The side wall of the first limiting cavity 311 is provided with a limiting screw hole. The locking member is used for threaded connection with the limiting screw hole and tightens the first limiting rod 321 after passing through the limiting screw hole to lock and limit the first beam 31 and the second beam 32. The safety shackle 4 is provided on the second beam 32.

[0048] It is understandable that the second crossbeam 32 and the first crossbeam 31 are slidably connected and locked and limited by a locking member, so that the overall retractable design of the crossbeam assembly 3 can be realized to meet the hoisting requirements of long-axis parts of different lengths and ensure the balance of hoisting. The safety shackle 4 can be driven by the second crossbeam 32 to move horizontally so as to adjust the position of the safety shackle 4 to meet the hoisting requirements of parts with different center of mass positions, effectively improving the overall application range of the hoisting device.

[0049] Optionally, a plurality of weight-reducing holes are provided on the first crossbeam 31 to reduce the weight of the hoisting device itself. Correspondingly, a plurality of first position-limiting cavities 311 are provided around the weight-reducing holes at the second end of the first crossbeam 31, and a plurality of first position-limiting rods 321 corresponding to the plurality of first position-limiting cavities 311 are provided at the first end of the second crossbeam 32 to enhance the connection stability between the first crossbeam 31 and the second crossbeam 32.

[0050] Preferably, please refer to Figure 1 , 3As shown in FIG. 4 , a plurality of connecting through holes are provided on the second cross beam 32 along its axial direction, and the connecting through holes are used to set the locking member 6 and connect the safety shackle 4 to the second cross beam 32 by cooperating with the locking member 6 and one of the connecting through holes.

[0051] It can be understood that, on the one hand, multiple connecting through holes can facilitate the adjustment of the installation position of the safety shackle 4, and cooperate with the sliding of the second crossbeam 32 to achieve a wider range of position adjustment of the safety shackle 4 to meet the lifting requirements of more types of long shaft parts.

[0052] It should be noted that the safety shackle 4 can be purchased as a professional lifting equipment standard part, which can shorten the processing cycle and improve the appearance quality of the tooling. At the same time, the locking member 6 uses a bolt standard part with a nut, which is convenient for disassembly and assembly of the safety shackle 4, which is conducive to improving the assembly efficiency and reducing the overall manufacturing and maintenance costs.

[0053] Preferably, a plurality of mounting platforms 11 are provided in a circular array on the side wall of the first end of the adapter 1, and each mounting platform 11 is provided with a mounting screw hole 12, and the mounting screw hole 12 is used to dock with the preset connecting screw hole on the end face of the long axis part, and the adapter 1 is connected to the long axis part by passing the connecting bolt 5 through the mounting screw hole 12 and the connecting screw hole.

[0054] It can be understood that the adapter 1 can be docked with the end face of the long axis part through the installation platform 11. Since the installation platform 11 is arranged on the outside of the adapter 1, the disassembly and assembly of the connecting bolts 5 can be facilitated to avoid the phenomenon of covering the connecting bolts 5 or interfering with the connecting bolts 5 after the parts are assembled, which is conducive to the rapid disassembly of the adapter 1 and the parts.

[0055] In this preferred embodiment, a circle of limiting sliding grooves is provided on the side wall of the first end of the adapter 1 , and each mounting platform 11 is slidably disposed in the limiting sliding grooves and slides circumferentially around the axis of the adapter 1 .

[0056] It can be understood that each mounting platform 11 is limited and guided by a circle of limiting grooves and can slide axially around the central axis of the adapter 1, so that each mounting platform 11 can adjust its position to adapt to the end face connection and matching requirements of different parts, which can greatly improve the adaptation range of the adapter 1, eliminate the need to process and manufacture multiple sets of adapters 1, and effectively reduce manufacturing costs.

[0057] It should be noted that the second end of the adapter 1 can maintain connection with the support plate 2 without affecting the position adjustment of the installation platform 11. That is, under the premise of reducing the replacement of the adapter 1, it is only necessary to connect and cooperate with different parts through the adapter 1 to achieve the overall installation of the lifting device, which is beneficial to reduce the steps of the lifting process and improve the efficiency of the lifting.

[0058] In other embodiments, please refer to Figure 6 ,7 As shown, the long shaft parts lifting device also includes a retractable mandrel assembly 7, a first end of the mandrel assembly 7 is used to connect with the first end of the adapter 1, and a second end of the mandrel assembly 7 is used to insert into the inner hole of the long shaft parts and support them.

[0059] It is understandable that, in order to enhance the stability of the hoisting support for long shaft parts, the first end of the adapter 1 is connected with a mandrel assembly 7, and the mandrel assembly 7 is inserted into the inner hole of the long shaft part to play a supporting role, thereby improving the stability of the hoisting. In addition, the mandrel assembly 7 can be retracted as a whole, and can meet the hoisting support requirements of parts of different lengths in a wider range, which is conducive to improving the overall adaptability of the hoisting device.

[0060] It should be noted that if the lifting device adopts the core shaft assembly 7 for support and protection, the length of the core shaft assembly 7 should be selected as long as possible under the condition that the force position allows. As the core shaft assembly 7 is a long shaft, it is difficult to process. Therefore, when designing the lifting device, the application of the core shaft assembly 7 can be selected according to the actual situation. For example, if the core shaft assembly 7 is not used, the safety shackle 4 can be arranged to be above the center of mass of the part, and a plurality of installation holes for the safety shackle 4 can be opened on the second beam 32 to serve as a guarantee hole for adjusting the balance.

[0061] For details, please refer to Figure 8 , 9 As shown in Figure 10, the core shaft assembly 7 includes a first connecting shaft 71, a second connecting shaft 72 and a connecting member 73. The first end of the connecting member 73 is rotatably connected to the inner hole of the first connecting shaft 71, and the second end of the connecting member 73 is threadedly connected to the inner hole of the second connecting shaft 72. The long shaft parts lifting device also includes an adjusting member 8. The adjusting member 8 is used to extend into the inner hole of the first connecting shaft 71 and engage with the connecting member 73, and drive the connecting member 73 to rotate to adjust the distance between the first connecting shaft 71 and the second connecting shaft 72.

[0062] Here, both the "first connecting shaft 71 and the second connecting shaft 72" are hollow circular shaft structures, and the first connecting shaft 71 is fixedly connected to the adapter 1. The first connecting shaft 71 and the second connecting shaft 72 are used to be inserted into the inner holes of long shaft parts to support them. Since the first connecting shaft 71 and the second connecting shaft 72 need to provide support, the rotation resistance of the second connecting shaft 72 is relatively large, and multiple long grooves can be opened along the axial direction on the outer walls of the first connecting shaft 71 and the second connecting shaft 72 to increase the friction resistance.

[0063] Here, the “connecting member 73” is a cylindrical structure, and the outer wall of the connecting member 73 is provided with a threaded section.

[0064] It can be understood that the first connecting shaft 71 and the second connecting shaft 72 are connected by a connecting piece 73, and the connecting piece 73 is rotatably connected to the inner hole of the first connecting shaft 71, and the connecting piece 73 is threadedly connected to the inner hole of the second connecting shaft 72. The connecting piece 73 can be driven to rotate by the adjusting piece 8 to adjust the second connecting shaft 72 away from or close to the first connecting shaft 71, that is, the overall length adjustment of the core shaft assembly 7 is realized to adapt to the internal support requirements of long shaft parts of different lengths.

[0065] For details, please refer to Fig. 9 As shown, a bearing 712 is provided on the inner wall of the inner hole of the first connecting shaft 71, and the first end of the connecting member 73 is connected to the bearing 712; a connecting boss 722 is provided on the inner wall of the inner hole of the second connecting shaft 72, and the inner wall of the connecting boss 722 is threadedly connected to the outer wall of the connecting member 73; a second limiting cavity 721 is provided on the end face of the second connecting shaft 72 close to the first connecting shaft 71, and a second limiting rod 711 is provided on the end face of the first connecting shaft 71 close to the second connecting shaft 72, and the second limiting rod 711 is slidably connected to the second limiting cavity 721.

[0066] It can be understood that the first connecting shaft 71 and the second connecting shaft 72 can be guided by the second limiting rod 711 and the second limiting cavity 721 to achieve more stable and smooth sliding of the first connecting shaft 71 and improve the accuracy of overall length adjustment of the core shaft assembly 7.

[0067] Optionally, see Fig. 9 , 10 As shown in FIGS. 11 , a limiting groove 731 is provided at one end of the connecting member 73 close to the first connecting shaft 71 , and a snap-fitting boss 81 is provided at the first end of the adjusting member 8 , and the snap-fitting boss 81 is used for snap-fitting with the limiting groove 731 .

[0068] It can be understood that the adjusting member 8 can form a snap-fit ​​connection by cooperating with the limiting groove 731 of the connecting member 73 through the snap-fit ​​boss 81, and then the connecting member 73 can be driven to rotate by rotating the adjusting member 8, and the connecting member 73 and the second connecting shaft 72 can realize the sliding position adjustment of the second connecting shaft 72 through the screw transmission principle. In this way, after the lifting device is installed, the length of the core shaft assembly 7 can be adjusted through the adjusting member 8 to adjust the force balance of the lifting device and ensure the stability of the parts lifting.

[0069] Specifically, the clamping boss 81 is a cross boss structure, and the limiting groove 731 is a cross groove structure. In addition, a handle 82 can be provided at the second end of the adjusting member 8 to facilitate the operator to rotate the adjusting member 8 and improve the convenience of operation.

[0070] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0071] This article uses specific examples to illustrate the principles and implementation methods of this application. The above examples are only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection of this application.

Claims

1. A long shaft parts lifting device, characterized in that: It includes an adapter (1), a support plate (2), a crossbeam assembly (3) and a safety shackle (4): The first end of the adapter (1) is used to connect with a connection screw hole preset on the end face of a long shaft part through a connection bolt (5); the lower part of the support plate (2) facing the long shaft part is connected to the second end of the adapter (1); and the upper part of the support plate (2) on the same side is connected to the first end of the crossbeam assembly (3); the crossbeam assembly (3) and the adapter (1) are arranged in parallel; a safety shackle (4) is detachably arranged on an end of the crossbeam assembly (3) away from the support plate (2); and the safety shackle (4) is used for an external lifting mechanism; The crossbeam assembly (3) is a telescopic structure, and the crossbeam assembly (3) can drive the safety shackle (4) away from or close to the support plate (2).

2. A long shaft parts lifting device according to claim 1, characterized in that: The second end of the adapter (1) is connected to the support plate (2) via a connecting bolt (5), and the upper part of the support plate (2) is connected to the first end of the crossbeam assembly (3) via a connecting bolt (5).

3. A long shaft parts lifting device according to claim 1, characterized in that: The crossbeam assembly (3) comprises a first crossbeam (31), a second crossbeam (32) and a locking member, wherein the first end of the first crossbeam (31) is connected to the side wall of the support plate (2), the end surface of the second end of the first crossbeam (31) is provided with a first limiting cavity (311), the first end of the second crossbeam (32) is provided with a first limiting rod (321), the first limiting rod (321) is used for sliding connection with the first limiting cavity (311), the side wall of the first limiting cavity (311) is provided with a limiting screw hole, the locking member is used for threaded connection with the limiting screw hole and after passing through the limiting screw hole, the first limiting rod (321) is tightened to lock and limit the first crossbeam (31) and the second crossbeam (32), and the safety shackle (4) is provided on the second crossbeam (32).

4. A long shaft parts lifting device according to claim 3, characterized in that: The second cross beam (32) is provided with a plurality of connecting through holes spaced apart along its axial direction, and the connecting through holes are used to set a locking member (6) and connect the safety shackle (4) to the second cross beam (32) through the locking member (6) cooperating with one of the connecting through holes.

5. The long shaft parts lifting device according to claim 1, characterized in that: A plurality of mounting platforms (11) are arranged in an annular array on the side wall of the first end of the adapter (1), and each mounting platform (11) is provided with a mounting screw hole (12). The mounting screw hole (12) is used to dock with a connection screw hole preset on the end face of a long shaft part, and the adapter (1) is connected to the long shaft part by passing a connection bolt (5) through the mounting screw hole (12) and the connection screw hole.

6. A long shaft parts lifting device according to claim 5, characterized in that: A circle of limiting sliding grooves is provided on the side wall of the first end of the adapter (1), and each mounting platform (11) is slidably arranged in the limiting sliding grooves and slides circumferentially around the axis of the adapter (1).

7. The long shaft parts lifting device according to claim 1, characterized in that: The long shaft part lifting device also includes a retractable mandrel assembly (7), the first end of the mandrel assembly (7) is used to connect with the first end of the adapter (1), and the second end of the mandrel assembly (7) is used to insert into the inner hole of the long shaft part and support it.

8. The long shaft parts lifting device according to claim 7, characterized in that: The core shaft assembly (7) includes a first connecting shaft (71), a second connecting shaft (72) and a connecting piece (73), wherein the first end of the connecting piece (73) is rotatably connected to the inner hole of the first connecting shaft (71), and the second end of the connecting piece (73) is threadedly connected to the inner hole of the second connecting shaft (72). The long shaft part lifting device also includes an adjusting piece (8), which is used to extend into the inner hole of the first connecting shaft (71) and engage with the connecting piece (73), and drive the connecting piece (73) to rotate to adjust the distance between the first connecting shaft (71) and the second connecting shaft (72).

9. A long shaft parts lifting device according to claim 8, characterized in that: A bearing (712) is arranged on the inner wall of the inner hole of the first connecting shaft (71), and the first end of the connecting member (73) is connected to the bearing (712); a connecting boss (722) is arranged on the inner wall of the inner hole of the second connecting shaft (72), and the inner wall of the connecting boss (722) is threadedly connected to the outer wall of the connecting member (73); a second limiting cavity (721) is provided on the end surface of the second connecting shaft (72) close to the first connecting shaft (71), and a second limiting rod (711) is arranged on the end surface of the first connecting shaft (71) close to the second connecting shaft (72), and the second limiting rod (711) is slidably connected to the second limiting cavity (721).

10. The long shaft parts lifting device according to claim 8, characterized in that: A limiting groove (731) is provided at one end of the connecting member (73) close to the first connecting shaft (71), and a clamping boss (81) is provided at the first end of the adjusting member (8), and the clamping boss (81) is used for clamping and cooperating with the limiting groove (731).

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